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WO2009103369A1 - Method and device for operating a hybrid drive device of a motor vehicle - Google Patents

Method and device for operating a hybrid drive device of a motor vehicle Download PDF

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Publication number
WO2009103369A1
WO2009103369A1 PCT/EP2008/065966 EP2008065966W WO2009103369A1 WO 2009103369 A1 WO2009103369 A1 WO 2009103369A1 EP 2008065966 W EP2008065966 W EP 2008065966W WO 2009103369 A1 WO2009103369 A1 WO 2009103369A1
Authority
WO
WIPO (PCT)
Prior art keywords
driving
route
determined
driver
operating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2008/065966
Other languages
German (de)
French (fr)
Inventor
Volkmar Wuensch
Michael Werner
Klaus Schenk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2009103369A1 publication Critical patent/WO2009103369A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/11—Controlling the power contribution of each of the prime movers to meet required power demand using model predictive control [MPC] strategies, i.e. control methods based on models predicting performance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/0097—Predicting future conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/12—Controlling the power contribution of each of the prime movers to meet required power demand using control strategies taking into account route information
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/043—Identity of occupants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/18—Steering angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2552/00—Input parameters relating to infrastructure
    • B60W2552/20—Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2556/00—Input parameters relating to data
    • B60W2556/10—Historical data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2556/00—Input parameters relating to data
    • B60W2556/45—External transmission of data to or from the vehicle
    • B60W2556/50—External transmission of data to or from the vehicle of positioning data, e.g. GPS [Global Positioning System] data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/84—Data processing systems or methods, management, administration

Definitions

  • the invention relates to a method for operating a hybrid drive device of a motor vehicle, which has at least two different drive units, in particular an internal combustion engine and an electric machine.
  • Hybrid drive devices naturally have an internal combustion engine and at least one electric machine, which are mechanically operatively connected to each other, so that they can provide a common drive torque.
  • the electric machine is acted upon, for example, in a Boostbetheb to increase the driving dynamics with a high torque, whereas in a quiet driving the internal combustion engine is operated in favorable efficiencies.
  • These operating strategies are implemented, for example, in the control unit of the hybrid drive device, so that the control of the hybrid drive device or the internal combustion engine and the electric machine depending on consumption consumption optimized, optimized performance and / or optimized for the pollutants.
  • Another operating strategy is, for example, to operate the electric machine as a generator, so that electrical energy can be obtained and fed to an electric store of the hybrid drive device, from which the electric machine can be supplied with electrical energy during a motor operation or purely electrical driving operation.
  • the inventive method for operating a hybrid drive device of a motor vehicle having at least two different drive units, in particular an internal combustion engine and an electric machine provides that for drive units, in particular for the internal combustion engine and the electric machine, depending on a route an operating strategy is set , wherein the driving distance is driven and at least one driving profile is determined and stored and, depending on the driving profile, the operating strategy is influenced when the driving distance is re-run.
  • the operating strategy for the drive units, in particular for the internal combustion engine and the electric machine is set as a function of a route. While driving the route, at least one driving profile is determined. This means that when driving the route, data relating to the route are determined and stored as a driving profile.
  • the data concerning the route when re-driving the route are already known and are advantageously used to influence the operating strategy when re-driving.
  • the determined data or the driving profile can be used in such a way that the operating strategy can already be set optimally at the beginning over the entire driving route, for example with regard to fuel consumption and / or pollutant emissions of the internal combustion engine.
  • the course of the route and / or a height profile of the route are determined and stored as data.
  • data relating to the course of the route are determined and stored in the steering angle and / or distances.
  • the elevation profile related data altitude difference, altitude differences and / or distances are preferably determined and stored.
  • the determined driving profile can be viewed and utilized in connection with the topology of the route.
  • load torques can be assigned to different positions of the vehicle on the route.
  • the time profile of accelerations, load torques and / or speeds of at least one driver are determined and stored as data of the driving profile.
  • the driving profile and / or the data of the driving profile are stored in a non-volatile memory of a control device of the hybrid drive device.
  • these data or the driving profile can be retrieved beforehand, so that the operating strategy is already optimized at the beginning of driving or adjusted driver individually to the driving distance. For example, based on the time profile of the determined and stored load moments, a consumption-optimized operating strategy can be set over the entire route.
  • the determination and storage of the driving profile is advantageously initiated by the driver, for example by actuation of a corresponding button / switch or by an acoustic command. It is also conceivable that the driver is asked to initiate the procedure.
  • the advantageous method has particularly favorable effects on routes which are particularly frequented by the driver, for example the way from home to the workplace.
  • This driving profile thus contains, among other things, driver-individual data that is stored. In other words, a driver-specific / driver-individual (driving) profile is determined and stored. Depending on this driving profile, the operating strategy for the internal combustion engine and the electric machine during a re-driving the route, so if the driver drives the same route again, influenced.
  • the operating strategy can be favorably influenced.
  • a previously known - not yet used - driving route is used as the route.
  • the previously known route is preferably determined or determined by means of a navigation system. For example, if the driver inputs a desired destination in his navigation system, the latter determines a corresponding route to the destination. The first time driving this now known route the driving profile or its data is assigned directly to the route or different positions of the vehicle on the route. If, for example, the driver enters the same route a further time into his navigation system, the operating strategy is influenced as a function of the driving profile.
  • the determined driving profiles are compared. For example, if the driver drives the route - now known and traveled - a second time, then a driving profile is determined and stored, which is then compared with the previously determined driving profile. As a result, the stored driving profile can be gradually adapted or optimized. Particularly preferably, the determined driving profile is adjusted by interpolation when re-driving the route. Alternatively, an averaged driving profile is advantageously determined from the determined driving profiles. Expediently, only driving profiles of a driver are compared with one another and evaluated or adapted accordingly. Thus, the operating strategy can be influenced by different driving profiles depending on the driver. In this case, different drivers can be recognized, for example, by means of their ignition key, or the respective driver enters his individual identifier when starting the process. If necessary, he is requested to do so by the system.
  • a charging strategy for at least one electric machine assigned to the electric machine as the operating strategy Memory is used.
  • the state of charge of the electrical storage is taken into account and in particular a motor and / or generator operation of the electric machine set at times in which this appears advantageous by prior knowledge of the route and / or the driving profile.
  • the operating strategy takes into account a previously known external charging process of the electrical storage.
  • plug-in hybrid vehicles or hybrid drive devices it is possible to charge the electrical storage via an external charging process, such as via the public power grid. If an external charging process is already known prior to departure, ie it is known when the next external charging process takes place, the operating strategy is influenced accordingly.
  • the driver informs the vehicle or the control unit of the hybrid drive device via suitable means when the next external charge of the electrical storage is to take place, for example at the end of the current drive cycle or the route.
  • the driver indicates only a period of time, or a certain time when the external charging is to take place.
  • the time be it a relative time or an absolute time, it is possible to drive purely electrically for a longer period of time, since the electric storage can be further discharged than in the usual operation of the hybrid drive device.
  • careful charging strategies during external charging process the service life of the electrical storage can be maintained or extended despite extended operating limits.
  • a further advantageous aspect of the invention is that, in the event of a deviation from the previously known driving route, the operating strategy is set as a function of the current operating state and / or driving state.
  • the now known route can also represent the first driven route, and thus, of course, is already known when re-driving. If the driver deviates from the previously known driving route, that is from the already traveled or from a predetermined by the navigation system route, here advantageously tolerance limits are given, the operating strategy is switched so that it does not depend on the driving profile, since this now does not apply to the current route, but of current Bethebszuhyroidn and / or driving conditions of the hybrid drive device is set or influenced.
  • driving profiles several routes and / or multiple drivers are stored.
  • the driver can select a previously known one from several routes before starting his journey and / or identify himself to the vehicle or the hybrid drive device so that it calls up the corresponding individual driving profile, as a function of which the operating strategy is influenced during re-driving.
  • the driver is before driving on and / or re-driving the route to recognize the vehicle or the hybrid drive device.
  • the driving profile concerning him / her is then automatically determined from the plurality of driving profiles and used to influence the operating strategy.
  • the invention relates to a device for operating a hybrid drive device, in particular for carrying out the method described above, wherein the hybrid drive device at least two different drive units, in particular an internal combustion engine and an electric machine, having means for setting an operating strategy for the drive units as a function of a route with means for determining and storing a driving profile when driving the route and with means for influencing the operating strategy as a function of the driving profile during a re-driving of the route.
  • the hybrid drive device at least two different drive units, in particular an internal combustion engine and an electric machine, having means for setting an operating strategy for the drive units as a function of a route with means for determining and storing a driving profile when driving the route and with means for influencing the operating strategy as a function of the driving profile during a re-driving of the route.
  • FIG. 1 An embodiment of the method according to the invention in a schematic representation.
  • the figure shows a schematic representation of an embodiment of the method according to the invention for operating a hybrid drive device of a motor vehicle.
  • the hybrid drive device has as drive units an internal combustion engine 8 and an electric machine 9, which are mechanically operatively connected to each other, for example by means of a corresponding coupling, and an electrical machine associated electrical storage.
  • a hybrid drive device can be operated purely electrically, purely by burning force-motor or in a mixed operation.
  • the electric machine can be operated both motor and generator.
  • it is known, depending on a known route which can be determined for example by a navigation system of the motor vehicle to set the operating strategy according to the driving route, with regard to fuel consumption, dynamics and / or pollutant emissions.
  • a first step 1 the hybrid drive device or the motor vehicle is started.
  • the driver initializes the advantageous method for operating the hybrid drive device. The initialization can be done by the driver, and / or the driver can be asked to do so.
  • the driver selects a route. This can be done by selecting one of a plurality of previously stored, previously known routes, or by determining a new route by means of a navigation system.
  • a route This can be done by selecting one of a plurality of previously stored, previously known routes, or by determining a new route by means of a navigation system.
  • the driver knows a previously known route, to which geometic / topographical data are known. for example, by means of the navigation system, selects.
  • a corresponding operating strategy which is optimized for this route, is selected in a step 4, as indicated by the dashed arrow 5.
  • the operating strategy is thus set only on the basis of physical data of the route.
  • the selected route is now driven while a driving profile is determined and stored in a step 6.
  • a driving profile is determined and stored in a step 6.
  • the time profile of accelerations, load torques and / or speeds are expediently determined and stored as data of the driving profile.
  • the operating strategy as indicated by an arrow 7, influenced in step 4, so that a driver-individual operating strategy arises.
  • an operating strategy can be adapted to a particularly dynamic or to a fuel consumption-oriented driver.
  • the engine 8 and the electric machine 9 of the hybrid drive device are then driven.
  • the route (3) is not preselected, but detected during the first driving on the route and as part of the driving profile, as indicated by an arrow 10, or is stored independently.
  • the course of the route for Example steering angles and distances, and / or a height profile of the route as data determined and stored.
  • the detection of the driving profile 6, the driver can stop manually, or it is automatically terminated by the system, for example when reaching the destination point.
  • the driver-initiated creation of the driving profile captures data of the driver's individual driving style, so that it is also possible to detect and separate the individual driving profiles of different drivers. To do this, the driver must identify himself during initialization (step 2) of the system. As a result, the operating strategy (step 4) is then set driver-individually. By detecting the driver-individual driving profile could now be on data concerning the altitude or a height profile of the route, be dispensed with. For the use of the advantageous method, the driver during the initialization (step 2) advantageously from the already driven routes to which a
  • Driving profile was determined and saved, select a desired. If the driver deviates from the selected driving route when driving the motor vehicle, the operating strategy (step 4) is set as a function of the current operating state and / or driving state of the motor vehicle or hybrid drive device, so that in each case optimized driving of the drive units (internal combustion engine 8 and electric machine 9).
  • the data of the driving profile can be edited and / or deleted. This also allows a manual influence on the operating strategy.
  • the driver can specify when initializing (step 2) of the system when the next external charging should take place.
  • step 2 initializing
  • the operating strategy is now influenced so that the service life is maintained despite the extension of the operating limits. For example, this can be ensured for a longer purely electric driving, since the electric storage can be discharged further than conventional operating strategies.
  • the driver may conveniently specify a particular time or period for the external charging process. It is also conceivable that he only indicates that after the current driving cycle, an external charging is to take place.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to a method for operating a hybrid drive device of a motor vehicle, which hybrid drive device has at least two different drive units, in particular an internal combustion engine and an electric machine, wherein an operating strategy is set for the drive units as a function of a route, wherein the route is travelled along and at least one travel profile is determined and stored, and when the route is travelled over again the operating strategy is influenced as a function of the travel profile. In addition, the invention relates to a device for operating a hybrid drive device.

Description

Beschreibung description

Titel Verfahren und Vorrichtung zum Betreiben einerTitle method and apparatus for operating a

Hybridantriebsvorrichtung eines KraftfahrzeugsHybrid drive device of a motor vehicle

Die Erfindung betrifft ein Verfahren zum Betreiben einer Hybridantriebsvorrichtung eines Kraftfahrzeugs, die zumindest zwei unterschiedliche Antriebsaggregate, insbesondere eine Brennkraftmaschine und eine elektrische Maschine, aufweist.The invention relates to a method for operating a hybrid drive device of a motor vehicle, which has at least two different drive units, in particular an internal combustion engine and an electric machine.

Stand der TechnikState of the art

Zum Betreiben von Hybridantriebsvorrichtungen sind eine Vielzahl von Verfahren bekannt. Hybridantriebsvorrichtungen weisen naturgemäß eine Brennkraftmaschine und zumindest eine elektrische Maschine auf, die miteinander mechanisch wirkverbindbar sind, sodass sie ein gemeinsames Antriebsdrehmoment erbringen können. Die elektrische Maschine wird dabei beispielsweise in einem Boostbetheb zur Erhöhung der Fahrdynamik mit einem hohen Drehmoment beaufschlagt, wohingegen bei einem ruhigen Fahrbetrieb die Brennkraftmaschine in günstigen Wirkungsgraden betrieben wird. Diese Betriebsstrategien werden beispielsweise in das Steuergerät der Hybridantriebsvorrichtung implementiert, sodass die Ansteuerung der Hybridantriebsvorrichtung beziehungsweise der Brennkraftmaschine und der elektrischen Maschine je nach Anforderungen verbrauchsoptimiert, leistungsoptimiert und/oder schadstoffoptimiert erfolgt. Eine weitere Betriebsstrategie ist es, beispielsweise, die elektrische Maschine generatorisch zu betreiben, sodass elektrische Energie gewonnen und einem elektrischen Speicher der Hybridantriebsvorrichtung zugeführt werden kann, aus dem die elektrische Maschine bei einem motorischen Betrieb oder einem rein elektrischen Fahrbetrieb mit elektrischer Energie versorgt werden kann.For driving hybrid propulsion devices, a variety of methods are known. Hybrid drive devices naturally have an internal combustion engine and at least one electric machine, which are mechanically operatively connected to each other, so that they can provide a common drive torque. The electric machine is acted upon, for example, in a Boostbetheb to increase the driving dynamics with a high torque, whereas in a quiet driving the internal combustion engine is operated in favorable efficiencies. These operating strategies are implemented, for example, in the control unit of the hybrid drive device, so that the control of the hybrid drive device or the internal combustion engine and the electric machine depending on consumption consumption optimized, optimized performance and / or optimized for the pollutants. Another operating strategy is, for example, to operate the electric machine as a generator, so that electrical energy can be obtained and fed to an electric store of the hybrid drive device, from which the electric machine can be supplied with electrical energy during a motor operation or purely electrical driving operation.

Offenbarung der Erfindung Das erfindungsgemäße Verfahren zum Betreiben einer Hybridantriebsvorrichtung eines Kraftfahrzeugs, die zumindest zwei unterschiedliche Antriebsaggregate, insbesondere eine Brennkraftmaschine und eine elektrische Maschine, aufweist, sieht vor, dass für Antriebsaggregate, insbesondere für die Brennkraftmaschine und die elektrische Maschine, in Abhängigkeit einer Fahrstrecke eine Betriebsstrategie eingestellt wird, wobei die Fahrstrecke gefahren und mindestens ein Fahrprofil ermittelt und gespeichert und in Abhängigkeit des Fahrprofils die Betriebsstrategie bei einem Wiederbefahren der Fahrstrecke beeinflusst wird. Erfindungsgemäß ist also vorgesehen, dass die Betriebsstrategie für die Antriebsaggregate, insbesondere für die Brennkraftmaschine und die elektrische Maschine, in Abhängigkeit einer Fahrstrecke eingestellt wird. Während die Fahrstrecke gefahren wird, wird zumindest ein Fahrprofil ermittelt. Das bedeutet, dass beim Fahren der Fahrstrecke Daten, die die Fahrstrecke betreffen, ermittelt und als Fahrprofil gespeichert werden. Somit sind die Daten betreffend die Fahrstrecke beim Wiederbefahren der Fahrstrecke bereits bekannt und werden vorteilhafterweise dazu verwendet, die Betriebsstrategie beim Wiederbefahren zu beeinflussen. So können die ermittelten Daten beziehungsweise das Fahrprofil derart genutzt werden, dass die Betriebsstrategie über die gesamte Fahrstrecke hinweg bereits zu Anfang optimal eingestellt werden kann, beispielsweise in Bezug auf Kraftstoffverbrauch und/oder Schadstoffausstoß der Brennkraftmaschine.Disclosure of the invention The inventive method for operating a hybrid drive device of a motor vehicle having at least two different drive units, in particular an internal combustion engine and an electric machine, provides that for drive units, in particular for the internal combustion engine and the electric machine, depending on a route an operating strategy is set , wherein the driving distance is driven and at least one driving profile is determined and stored and, depending on the driving profile, the operating strategy is influenced when the driving distance is re-run. According to the invention, it is thus provided that the operating strategy for the drive units, in particular for the internal combustion engine and the electric machine, is set as a function of a route. While driving the route, at least one driving profile is determined. This means that when driving the route, data relating to the route are determined and stored as a driving profile. Thus, the data concerning the route when re-driving the route are already known and are advantageously used to influence the operating strategy when re-driving. Thus, the determined data or the driving profile can be used in such a way that the operating strategy can already be set optimally at the beginning over the entire driving route, for example with regard to fuel consumption and / or pollutant emissions of the internal combustion engine.

Vorteilhafterweise ist vorgesehen, dass als Daten der Verlauf der Fahrstrecke und/oder ein Höhenprofil der Fahrstrecke ermittelt und gespeichert werden. Insbesondere werden als den Verlauf der Fahrstrecke betreffende Daten Lenkwinkel und/oder Entfernungen ermittelt und gespeichert. Als das Höhenprofil betreffende Daten werden vorzugsweise Höhenmeter, Höhenmeterdifferenzen und/oder Entfernungen ermittelt und gespeichert. Somit kann das ermittelte Fahrprofil im Zusammenhang mit der Topologie der Fahrstrecke betrachtet und verwertet werden. Hierdurch ist eine besonders genaue und wirkungsvolle Einstellung der Betriebsstrategie möglich, da nunmehr beispielsweise Lastmomente unterschiedlichen Positionen des Fahrzeugs auf der Fahrstrecke zugeordnet werden können. Nach einer Weiterbildung der Erfindung werden als Daten des Fahrprofils der zeitliche Verlauf von Beschleunigungen, Lastmomenten und/oder Geschwindigkeiten zumindest eines Fahrers ermittelt und gespeichert. Beim Befahren der Fahrstrecke werden für das Fahrprofil also Daten ermittelt, die den zeitlichen Verlauf von Beschleunigungen, Lastmomenten und/oderAdvantageously, it is provided that the course of the route and / or a height profile of the route are determined and stored as data. In particular, data relating to the course of the route are determined and stored in the steering angle and / or distances. As the elevation profile related data altitude difference, altitude differences and / or distances are preferably determined and stored. Thus, the determined driving profile can be viewed and utilized in connection with the topology of the route. As a result, a particularly accurate and effective adjustment of the operating strategy is possible because now, for example, load torques can be assigned to different positions of the vehicle on the route. According to a development of the invention, the time profile of accelerations, load torques and / or speeds of at least one driver are determined and stored as data of the driving profile. When driving on the route so data are determined for the driving profile, the timing of accelerations, load torque and / or

Geschwindigkeiten, die der Fahrer des Kraftfahrzeugs beim Befahren der Fahrstrecke anfordert, ermittelt und gespeichert. Bevorzugt werden das Fahrprofil und/oder die Daten des Fahrprofils in einem nicht flüchtigen Speicher eines Steuergeräts der Hybridantriebsvorrichtung hinterlegt. Beim Wiederbefahren der Fahrstrecke können diese Daten beziehungsweise das Fahrprofil vorher abgerufen werden, sodass die Betriebsstrategie bereits zu Fahrbeginn optimiert beziehungsweise fahrerindividuell auf die zu befahrende Fahrstrecke eingestellt wird. So kann beispielsweise auf Basis des zeitlichen Verlaufs der ermittelten und gespeicherten Lastmomente eine verbrauchsoptimierte Betriebsstrategie über die gesamte Fahrstrecke eingestellt werden. Durch das Ermitteln des Fahrprofils ist es also möglich, beim Wiederbefahren der Fahrstrecke vorab die Betriebsstrategie für die gesamte Fahrstrecke, also für noch kommende Zeitpunkte, einzustellen. Das Ermitteln und Speichern des Fahrprofils wird vorteilhafterweise von dem Fahrer initiiert, zum Beispiel durch Betätigung eines entsprechenden Knopfes/Schalters oder durch einen akustischen Befehl. Auch ist denkbar, dass der Fahrer zum Initiieren des Verfahrens aufgefordert wird. Besonders günstig wirkt sich das vorteilhafte Verfahren bei Fahrstrecken aus, die besonders häufig von dem Fahrer befahren werden, wie zum Beispiel der Weg von Zuhause zum Arbeitsplatz. Dieses Fahrprofil enthält also unter Anderem fahrerindividuelle Daten, die gespeichert werden. Mit anderen Worten wird ein fahrerspezifisches/fahrerindividuelles (Fahr-)profil ermittelt und gespeichert. In Abhängigkeit dieses Fahrprofils wird die Betriebsstrategie für die Brennkraftmaschine und die elektrische Maschine bei einem Wiederbefahren der Fahrstrecke, wenn also der Fahrer die gleiche Fahrstrecke ein weiteres Mal fährt, beeinflusst. Durch das zuvor gewonnene Fahrprofil kann somit bereits am Anfang der Fahrstrecke - beim Wiederbefahren - die Betriebsstrategie vorteilhaft beeinflusst werden. Dadurch ist es möglich eine optimale fahrerindividuelle Betriebsstrategie für die Fahrstrecke einzustellen, zum Beispiel in Bezug auf einen Kraftstoffverbrauch oder ein möglichst dynamisches Verhalten, je nach dem was für ein Fahrverhalten der Fahrer dessen Fahrprofil gespeichert wurde zu Tage legt.Speeds which the driver of the motor vehicle requests when driving on the route, determined and stored. Preferably, the driving profile and / or the data of the driving profile are stored in a non-volatile memory of a control device of the hybrid drive device. When re-driving the route, these data or the driving profile can be retrieved beforehand, so that the operating strategy is already optimized at the beginning of driving or adjusted driver individually to the driving distance. For example, based on the time profile of the determined and stored load moments, a consumption-optimized operating strategy can be set over the entire route. By determining the driving profile, it is thus possible, when re-driving the route beforehand, to set the operating strategy for the entire driving route, that is to say for future times. The determination and storage of the driving profile is advantageously initiated by the driver, for example by actuation of a corresponding button / switch or by an acoustic command. It is also conceivable that the driver is asked to initiate the procedure. The advantageous method has particularly favorable effects on routes which are particularly frequented by the driver, for example the way from home to the workplace. This driving profile thus contains, among other things, driver-individual data that is stored. In other words, a driver-specific / driver-individual (driving) profile is determined and stored. Depending on this driving profile, the operating strategy for the internal combustion engine and the electric machine during a re-driving the route, so if the driver drives the same route again, influenced. By the previously obtained driving profile can thus already at the beginning of the route - when re-driving - the operating strategy can be favorably influenced. This makes it possible to set an optimal driver-individual operating strategy for the route, for example in terms of fuel consumption or as possible dynamic behavior, depending on what kind of driving behavior the driver whose driving profile was stored to day.

Alternativ ist vorgesehen, dass als Fahrstrecke eine vorbekannte - noch nicht befahrene - Fahrstrecke verwendet wird. Wobei die vorbekannte Fahrstrecke bevorzugt mittels eines Navigationssystems ermittelt beziehungsweise bestimmt wird. Gibt der Fahrer beispielsweise einen gewünschten Zielort in seinem Navigationssystem ein, so ermittelt letzteres eine entsprechende Fahrstrecke zu dem Zielort. Beim erstmaligen Befahren dieser nun vorbekannten Fahrstrecke wird das Fahrprofil beziehungsweise seine Daten direkt der Fahrstrecke beziehungsweise unterschiedlichen Positionen des Fahrzeugs auf der Fahrstrecke zugeordnet. Gibt der Fahrer beispielsweise einige Zeit später die gleiche Fahrstrecke ein weiteres Mal in sein Navigationssystem ein, so wird die Betriebsstrategie in Abhängigkeit von dem Fahrprofil beeinflusst.Alternatively, it is provided that a previously known - not yet used - driving route is used as the route. Wherein the previously known route is preferably determined or determined by means of a navigation system. For example, if the driver inputs a desired destination in his navigation system, the latter determines a corresponding route to the destination. The first time driving this now known route the driving profile or its data is assigned directly to the route or different positions of the vehicle on the route. If, for example, the driver enters the same route a further time into his navigation system, the operating strategy is influenced as a function of the driving profile.

Nach einer Weiterbildung der Erfindung ist vorgesehen, dass beim Wiederbefahren der Fahrstrecke die ermittelten Fahrprofile miteinander verglichen werden. Befährt der Fahrer die - nun vorbekannte und befahrene - Fahrstrecke beispielsweise ein zweites Mal, so wird wiederum ein Fahrprofil ermittelt und gespeichert, das dann mit dem vorher ermittelten Fahrprofil verglichen wird. Hierdurch kann nach und nach das gespeicherte Fahrprofil angepasst beziehungsweise optimiert werden. Besonders bevorzugt wird beim Wiederbefahren der Fahrstrecke das ermittelte Fahrprofil durch Interpolation angepasst. Alternativ wird aus den ermittelten Fahrprofilen vorteilhafterweise ein gemitteltes Fahrprofil bestimmt. Wobei zweckmäßigerweise nur Fahrprofile eines Fahrers miteinander verglichen und entsprechend ausgewertet beziehungsweise angepasst werden. So kann die Betriebsstrategie in Abhängigkeit von dem Fahrer durch unterschiedliche Fahrprofile beeinflusst werden. Dabei können unterschiedliche Fahrer beispielsweise anhand ihres Zündschlüssels erkannt werden, oder der jeweilige Fahrer gibt beim Starten des Verfahrens seine individuelle Kennung ein. Gegebenenfalls wird er hierzu von dem System aufgefordert.According to a development of the invention, it is provided that when re-driving the route, the determined driving profiles are compared. For example, if the driver drives the route - now known and traveled - a second time, then a driving profile is determined and stored, which is then compared with the previously determined driving profile. As a result, the stored driving profile can be gradually adapted or optimized. Particularly preferably, the determined driving profile is adjusted by interpolation when re-driving the route. Alternatively, an averaged driving profile is advantageously determined from the determined driving profiles. Expediently, only driving profiles of a driver are compared with one another and evaluated or adapted accordingly. Thus, the operating strategy can be influenced by different driving profiles depending on the driver. In this case, different drivers can be recognized, for example, by means of their ignition key, or the respective driver enters his individual identifier when starting the process. If necessary, he is requested to do so by the system.

Ferner ist vorgesehen, dass als Betriebsstrategie eine Ladestrategie für mindestens einen der elektrischen Maschine zugeordneten elektrischen Speicher verwendet wird. Hierdurch wird der Ladezustand des elektrischen Speichers berücksichtigt und insbesondere ein motorischer und/oder generatorischer Betrieb der elektrischen Maschine eingestellt, zu Zeitpunkten, in denen dies durch Vorkenntnis der Fahrstrecke und/oder des Fahrprofils vorteilhaft erscheint.It is further provided that a charging strategy for at least one electric machine assigned to the electric machine as the operating strategy Memory is used. In this way, the state of charge of the electrical storage is taken into account and in particular a motor and / or generator operation of the electric machine set at times in which this appears advantageous by prior knowledge of the route and / or the driving profile.

Besonders vorteilhaft ist es, wenn die Betriebsstrategie einen vorbekannten externen Ladevorgang des elektrischen Speichers berücksichtigt. Bei sogenannten Plug-In-Hybridfahrzeugen beziehungsweise -Hybridantriebsvorrichtungen ist es möglich, den elektrischen Speicher über einen externen Ladevorgang, wie zum Beispiel über das öffentliche Stromnetz, aufzuladen. Ist vor Fahrtantritt ein externer Ladevorgang vorbekannt, ist also bekannt, wann der nächste externe Ladevorgang erfolgt, so wird die Betriebsstrategie entsprechend beeinflusst. Hierdurch können in der Praxis die Betriebsgrenzen des elektrischen Speichers erweitert werden, ohne dass die Lebensdauer des elektrischen Speichers beeinträchtigt wird. Vorteilhafterweise teilt der Fahrer dem Fahrzeug beziehungsweise dem Steuergerät der Hybridantriebsvorrichtung über geeignete Mittel mit, wann die nächste externe Ladung des elektrischen Speichers erfolgen soll, wie zum Beispiel am Ende des aktuellen Fahrzyklus beziehungsweise der Fahrstrecke. Ebenso ist es denkbar, dass der Fahrer lediglich einen Zeitraum angibt, oder eine bestimmte Zeit, zu der der externe Ladevorgang erfolgen soll. Durch Kenntnis des Zeitpunkts, sei es ein relativer oder ein absoluter Zeitpunkt, ist es möglich, für eine längere Zeitdauer rein elektrisch zu fahren, da der elektrische Speicher weiter entladen werden kann, als im üblichen Betrieb der Hybridantriebsvorrichtung. Durch schonende Ladestrategien beim externen Ladevorgang kann hierbei trotz erweiterter Betriebsgrenzen die Lebensdauer des elektrischen Speichers erhalten beziehungsweise verlängert werden.It is particularly advantageous if the operating strategy takes into account a previously known external charging process of the electrical storage. In so-called plug-in hybrid vehicles or hybrid drive devices, it is possible to charge the electrical storage via an external charging process, such as via the public power grid. If an external charging process is already known prior to departure, ie it is known when the next external charging process takes place, the operating strategy is influenced accordingly. As a result, in practice, the operating limits of the electrical storage can be extended without affecting the life of the electrical storage. Advantageously, the driver informs the vehicle or the control unit of the hybrid drive device via suitable means when the next external charge of the electrical storage is to take place, for example at the end of the current drive cycle or the route. It is also conceivable that the driver indicates only a period of time, or a certain time when the external charging is to take place. By knowing the time, be it a relative time or an absolute time, it is possible to drive purely electrically for a longer period of time, since the electric storage can be further discharged than in the usual operation of the hybrid drive device. By careful charging strategies during external charging process, the service life of the electrical storage can be maintained or extended despite extended operating limits.

Ein weiterer vorteilhafter Aspekt der Erfindung ist, dass bei Abweichung von der vorbekannten Fahrstrecke die Betriebsstrategie in Abhängigkeit von dem momentanen Betriebszustand und/oder Fahrzustand eingestellt wird. Hierbei sei angemerkt, dass die nun vorbekannte Fahrstrecke ebenso die zuerst gefahrene Fahrstrecke darstellen kann, und somit beim Wiederbefahren natürlich vorbekannt ist. Weicht der Fahrer von der vorbekannten Fahrstrecke, also von der bereits befahrenen oder von einer von dem Navigationssystem vorgegebenen Fahrstrecke ab, hier werden vorteilhafterweise Toleranzgrenzen vorgegeben, so wird die Betriebsstrategie derart umgestellt, dass sie nicht in Abhängigkeit von dem Fahrprofil, da dieses nunmehr nicht auf die aktuelle Fahrstrecke zutrifft, sondern von momentanen Bethebszuständen und/oder Fahrzuständen der Hybridantriebsvorrichtung eingestellt beziehungsweise beeinflusst wird.A further advantageous aspect of the invention is that, in the event of a deviation from the previously known driving route, the operating strategy is set as a function of the current operating state and / or driving state. It should be noted that the now known route can also represent the first driven route, and thus, of course, is already known when re-driving. If the driver deviates from the previously known driving route, that is from the already traveled or from a predetermined by the navigation system route, here advantageously tolerance limits are given, the operating strategy is switched so that it does not depend on the driving profile, since this now does not apply to the current route, but of current Bethebszuständen and / or driving conditions of the hybrid drive device is set or influenced.

Weiterhin ist vorgesehen, dass Fahrprofile mehrere Fahrstrecken und/oder mehrere Fahrer gespeichert werden. So kann der Fahrer beispielsweise vor Beginn seiner Fahrt aus mehreren Fahrstrecken eine vorbekannte auswählen und/oder sich dem Fahrzeug beziehungsweise der Hybridantriebsvorrichtung zu erkennen geben, sodass diese das entsprechende individuelle Fahrprofil aufruft, in dessen Abhängigkeit die Betriebsstrategie beim Wiederbefahren beeinflusst wird.Furthermore, it is provided that driving profiles several routes and / or multiple drivers are stored. Thus, for example, the driver can select a previously known one from several routes before starting his journey and / or identify himself to the vehicle or the hybrid drive device so that it calls up the corresponding individual driving profile, as a function of which the operating strategy is influenced during re-driving.

Vorteilhafterweise gibt sich der Fahrer vor dem Befahren und/oder Wiederbefahren der Fahrstrecke dem Fahrzeug beziehungsweise der Hybridantriebsvorrichtung zu erkennen. In Abhängigkeit des Fahrers wird dann automatisch das ihn betreffende Fahrprofil aus den mehreren Fahrprofilen ermittelt und zum Beeinflussen der Betriebsstrategie verwendet.Advantageously, the driver is before driving on and / or re-driving the route to recognize the vehicle or the hybrid drive device. Depending on the driver, the driving profile concerning him / her is then automatically determined from the plurality of driving profiles and used to influence the operating strategy.

Ferner betrifft die Erfindung eine Vorrichtung zum Betreiben einer Hybridantriebsvorrichtung, insbesondere zur Durchführung des oben beschriebenen Verfahrens, wobei die Hybridantriebsvorrichtung zumindest zwei unterschiedliche Antriebsaggregate, insbesondere eine Brennkraftmaschine und eine elektrische Maschine, aufweist, mit Mitteln zum Einstellen einer Betriebsstrategie für die Antriebsaggregate in Abhängigkeit einer Fahrstrecke, mit Mitteln zum Ermitteln und Speichern eines Fahrprofils beim Fahren der Fahrstrecke und mit Mitteln zum Beeinflussen der Betriebsstrategie in Abhängigkeit des Fahrprofils bei einem Wiederbefahren der Fahrstrecke.Furthermore, the invention relates to a device for operating a hybrid drive device, in particular for carrying out the method described above, wherein the hybrid drive device at least two different drive units, in particular an internal combustion engine and an electric machine, having means for setting an operating strategy for the drive units as a function of a route with means for determining and storing a driving profile when driving the route and with means for influencing the operating strategy as a function of the driving profile during a re-driving of the route.

Kurze Beschreibung der Zeichnungen Im Folgenden soll die Erfindung anhand einer Zeichnung näher erläutert werden. Dazu zeigt dieBrief description of the drawings In the following the invention will be explained in more detail with reference to a drawing. This shows the

Figur ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens in einer schematischen Darstellung.Figure an embodiment of the method according to the invention in a schematic representation.

Ausführungsform(en) der ErfindungEmbodiment (s) of the invention

Die Figur zeigt in einer schematischen Darstellung ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens zum Betreiben einer Hybridantriebsvorrichtung eines Kraftfahrzeugs. Die Hybridantriebsvorrichtung weist als Antreibsaggregate eine Brennkraftmaschine 8 und eine elektrische Maschine 9, die miteinander mechanisch wirkverbindbar sind, beispielsweise mittels einer entsprechenden Kupplung, sowie einen der elektrischen Maschine zugeordneten elektrischen Speicher auf. Zum Betreiben von Hybridantriebsvorrichtungen sind unterschiedlichste Betriebsstrategien möglich und bekannt. So kann eine Hybridantriebsvorrichtung rein elektrisch, rein brenn kraft-motorisch oder in einem Mischbetrieb betrieben werden. Darüber hinaus kann die elektrische Maschine sowohl motorisch als auch generatorisch betrieben werden. Weiterhin ist es bekannt, in Abhängigkeit von einer vorbekannten Fahrstrecke, die beispielsweise von einem Navigationssystem des Kraftfahrzeugs ermittelt werden kann, die Betriebsstrategie entsprechend der zu fahrenden Fahrstrecke einzustellen, mit Rücksicht auf Kraftstoffverbrauch, Dynamik und/oder Schadstoffemissionen.The figure shows a schematic representation of an embodiment of the method according to the invention for operating a hybrid drive device of a motor vehicle. The hybrid drive device has as drive units an internal combustion engine 8 and an electric machine 9, which are mechanically operatively connected to each other, for example by means of a corresponding coupling, and an electrical machine associated electrical storage. For operating hybrid drive devices, a wide variety of operating strategies are possible and known. Thus, a hybrid drive device can be operated purely electrically, purely by burning force-motor or in a mixed operation. In addition, the electric machine can be operated both motor and generator. Furthermore, it is known, depending on a known route, which can be determined for example by a navigation system of the motor vehicle to set the operating strategy according to the driving route, with regard to fuel consumption, dynamics and / or pollutant emissions.

Bei dem vorliegenden Ausführungsbeispiel wird in einem ersten Schritt 1 die Hybridantriebsvorrichtung beziehungsweise das Kraftfahrzeug gestartet. In einem darauf folgenden Schritt 2 initialisiert der Fahrer das vorteilhafte Verfahren zum Betreiben der Hybridantriebsvorrichtung. Die Initialisierung kann von dem Fahrer aus erfolgen, und/oder der Fahrer kann hierzu aufgefordert werden. Als nächstes wählt in einem darauf folgenden Schritt 3 der Fahrer eine Fahrstrecke aus. Dies kann dadurch erfolgen, dass er aus einer Mehrzahl von bereits gespeicherten, vorbekannten Fahrstrecken eine auswählt, oder dadurch, dass er mittels eines Navigationssystems eine neue Fahrstrecke bestimmt. Hier soll zunächst davon ausgegangen werden, dass der Fahrer eine vorbekannte Fahrstrecke, zu der also geomethsche/topografische Daten bekannt sind, beispielsweise mittels des Navigationssystems, auswählt. In Abhängigkeit dieser gewählten Fahrstrecke wird in einem Schritt 4 eine entsprechende Betriebstrategie, die auf diese Fahrstrecke optimiert ist, ausgewählt, wie durch den gestrichelten Pfeil 5 angedeutet. Hierbei wird die Betriebsstrategie also lediglich auf Basis von physikalischen Daten der Fahrstrecke eingestellt.In the present embodiment, in a first step 1, the hybrid drive device or the motor vehicle is started. In a subsequent step 2, the driver initializes the advantageous method for operating the hybrid drive device. The initialization can be done by the driver, and / or the driver can be asked to do so. Next, in a subsequent step 3, the driver selects a route. This can be done by selecting one of a plurality of previously stored, previously known routes, or by determining a new route by means of a navigation system. Here, it should first be assumed that the driver knows a previously known route, to which geometic / topographical data are known. for example, by means of the navigation system, selects. Depending on this selected route, a corresponding operating strategy, which is optimized for this route, is selected in a step 4, as indicated by the dashed arrow 5. Here, the operating strategy is thus set only on the basis of physical data of the route.

Erfindungsgemäß wird nun die gewählte Fahrstrecke gefahren und dabei ein Fahrprofil in einem Schritt 6 ermittelt und gespeichert. Das heißt, dass hierbei beim Abfahren der ausgewählten Fahrstrecke Daten bezüglich des Fahrverhaltens des Fahrers ermittelt und gespeichert und in Verbindung mit der jeweiligen Position des Fahrzeugs auf der Fahrstrecke gebracht werden. Als Daten des Fahrprofils werden hierbei zweckmäßigerweise der zeitliche Verlauf von Beschleunigungen, Lastmomenten und/oder Geschwindigkeiten ermittelt und gespeichert. Ebenso ist es möglich, einen zeitlichen Verlauf eingelegte Gänge eines Getriebes der Hybridantriebsvorrichtung als Daten des Fahrprofils zu hinterlegen. Somit entsteht eine fahrerindividuelle Datensammlung (Fahrprofil), die sich auf die Fahrstrecke beziehen. In Abhängigkeit dieses Fahrprofils wird die Betriebsstrategie, wie durch einen Pfeil 7 angedeutet, in dem Schritt 4 beeinflusst, sodass eine fahrerindividuelle Betriebsstrategie entsteht. So kann eine Betriebsstrategie beispielsweise auf einen besonders dynamischen oder auf einen kraftstoffverbrauch-orientierten Fahrer angepasst werden. Entsprechend der Betriebsstrategie (4) werden dann die Brennkraftmaschine 8 und die elektrische Maschine 9 der Hybridantriebsvorrichtung angesteuert.According to the invention, the selected route is now driven while a driving profile is determined and stored in a step 6. This means that in this case when driving the selected route data regarding the driving behavior of the driver is determined and stored and placed in connection with the respective position of the vehicle on the route. The time profile of accelerations, load torques and / or speeds are expediently determined and stored as data of the driving profile. Likewise, it is possible to store a course of a gear engaged in a transmission of the hybrid drive device as data of the driving profile. This creates a driver-specific data collection (driving profile), which relate to the route. Depending on this driving profile, the operating strategy, as indicated by an arrow 7, influenced in step 4, so that a driver-individual operating strategy arises. For example, an operating strategy can be adapted to a particularly dynamic or to a fuel consumption-oriented driver. According to the operation strategy (4), the engine 8 and the electric machine 9 of the hybrid drive device are then driven.

Durch das vorteilhafte Verfahren ist es möglich, auf Fahrstrecken, die mehr als einmal gefahren werden, die Betriebsstrategie fahrerindividuell zu optimieren. Bei einem wiederholten Befahren der Fahrstrecke wird ein vorteilhafterweise erneut ermitteltes Fahrprofil mit dem vorher ermittelten und gespeicherten Fahrprofil verglichen und gegebenenfalls ein gemitteltes Fahrprofil erstellt. Auch ist es denkbar, dass bei Wiederbefahren das ermittelte Fahrprofil interpoliert wird.Due to the advantageous method, it is possible to optimize the operating strategy driver-individually on routes that are driven more than once. In a repeated driving the route an advantageously re-determined driving profile is compared with the previously determined and stored driving profile and optionally created an average driving profile. It is also conceivable that the determined driving profile is interpolated when re-driving.

Darüber hinaus ist es denkbar, dass die Fahrstrecke (3) nicht vorausgewählt wird, sondern beim ersten Befahren der Fahrstrecke erfasst und als Teil des Fahrprofils, wie durch einen Pfeil 10 angedeutet, oder eigenständig gespeichert wird. Hierbei werden zweckmäßigerweise der Verlauf der Fahrstrecke, zum Beispiel Lenkwinkel und Entfernungen, und/oder ein Höhenprofil der Fahrstrecke als Daten ermittelt und gespeichert. Die Erfassung des Fahrprofils 6 kann der Fahrer manuell beenden, oder es wird von dem System automatisch, beispielsweise bei Erreichen des Zielpunktes, beendet.In addition, it is conceivable that the route (3) is not preselected, but detected during the first driving on the route and as part of the driving profile, as indicated by an arrow 10, or is stored independently. Here are expediently the course of the route, for Example steering angles and distances, and / or a height profile of the route as data determined and stored. The detection of the driving profile 6, the driver can stop manually, or it is automatically terminated by the system, for example when reaching the destination point.

Durch die durch den Fahrer initiierte Erstellung des Fahrprofils werden Daten individueller Fahrweisen des Fahrers erfasst, sodass es auch möglich ist, die individuellen Fahrprofile unterschiedlicher Fahrer zu erfassen und voneinander zu trennen. Dazu muss der Fahrer sich beim Initialisieren (Schritt 2) des Systems zu erkennen geben. Als Folge wird dann die Betriebsstrategie (Schritt 4) fahrerindividuell eingestellt. Durch das Erfassen des fahrerindividuellen Fahrprofils könnte nunmehr auf Daten, die Höhenmeter beziehungsweise ein Höhenprofil der Fahrstrecke betreffen, verzichtet werden. Zur Verwendung des vorteilhaften Verfahrens kann der Fahrer bei der Initialisierung (Schritt 2) vorteilhafterweise aus den bereits gefahrenen Fahrstrecken, zu denen einThe driver-initiated creation of the driving profile captures data of the driver's individual driving style, so that it is also possible to detect and separate the individual driving profiles of different drivers. To do this, the driver must identify himself during initialization (step 2) of the system. As a result, the operating strategy (step 4) is then set driver-individually. By detecting the driver-individual driving profile could now be on data concerning the altitude or a height profile of the route, be dispensed with. For the use of the advantageous method, the driver during the initialization (step 2) advantageously from the already driven routes to which a

Fahrprofil ermittelt und gespeichert wurde, eine gewünschte auswählen. Weicht der Fahrer beim Fahren des Kraftfahrzeugs von der gewählten Fahrstrecke ab, so wird die Betriebsstrategie (Schritt 4) in Abhängigkeit von dem momentanen Betriebszustand und/oder Fahrzustand des Kraftfahrzeugs beziehungsweise der Hybridantriebsvorrichtung eingestellt, sodass in jedem Fall ein optimiertes Ansteuern der Antriebsaggregate (Brennkraftmaschine 8 und elektrische Maschine 9) erfolgt. Vorteilhafterweise können die Daten des Fahrprofils editiert und/oder gelöscht werden. Hierdurch wird auch eine manuelle Beeinflussung der Betriebsstrategie ermöglicht.Driving profile was determined and saved, select a desired. If the driver deviates from the selected driving route when driving the motor vehicle, the operating strategy (step 4) is set as a function of the current operating state and / or driving state of the motor vehicle or hybrid drive device, so that in each case optimized driving of the drive units (internal combustion engine 8 and electric machine 9). Advantageously, the data of the driving profile can be edited and / or deleted. This also allows a manual influence on the operating strategy.

Für den Fall, dass als Hybridantriebsvorrichtung eine sogenannte Plug-In- Hybridantriebsvorrichtung verwendet wird, bei der ein externes Aufladen des elektrischen Speichers, beispielsweise über das öffentliche Stromnetz, möglich ist, kann der Fahrer bei der Initialisierung (Schritt 2) des Systems angeben, wann der nächste externe Ladevorgang erfolgen soll. Natürlich ist es auch denkbar, dass er dies auch zu jedem anderen Zeitpunkt beim Befahren der Fahrstrecke eingibt. In Abhängigkeit von dem vorbekannten externen Ladevorgang, wird nunmehr die Betriebsstrategie dahingehen beeinflusst, dass die Lebensdauer trotz Erweiterung der Betriebsgrenzen erhalten bleibt. Beispielsweise kann hierdurch ein länger rein elektrisches Fahren gewährleistet werden, da der elektrische Speicher weiter entladen werden kann als bei herkömmlichen Betriebsstrategien. Der Fahrer kann zweckmäßigerweise für den externen Ladevorgang einen bestimmten Zeitpunkt oder einen bestimmten Zeitraum angeben. Auch ist es denkbar, dass er lediglich an gibt, dass nach dem jetzt aktuellen Fahrzyklus ein externer Ladevorgang erfolgen soll.In the event that a so-called plug-in hybrid drive device is used as the hybrid drive device in which an external charging of the electrical storage, for example via the public power grid, is possible, the driver can specify when initializing (step 2) of the system when the next external charging should take place. Of course, it is also conceivable that he enters this at any other time when driving on the route. Depending on the previously known external charging process, the operating strategy is now influenced so that the service life is maintained despite the extension of the operating limits. For example, this can be ensured for a longer purely electric driving, since the electric storage can be discharged further than conventional operating strategies. The driver may conveniently specify a particular time or period for the external charging process. It is also conceivable that he only indicates that after the current driving cycle, an external charging is to take place.

Insgesamt ist es durch das vorteilhafte Verfahren möglich, bei wiederholtem Befahren einer Fahrstrecke fahrerindividuelle Betriebsstrategien, insbesondere Ladestrategien, der Hybridantriebsvorrichtung einzustellen. Overall, it is possible by the advantageous method to set driver-individual operating strategies, in particular charging strategies, the hybrid drive device with repeated driving a route.

Claims

Ansprüche claims 1. Verfahren zum Betreiben einer Hybridantriebsvorrichtung eines Kraftfahrzeugs, die zumindest zwei unterschiedliche Antriebsaggregate, insbesondere eine Brennkraftmaschine (8) und eine elektrische Maschine1. A method for operating a hybrid drive device of a motor vehicle, the at least two different drive units, in particular an internal combustion engine (8) and an electric machine (9), aufweist, wobei für die Antriebsaggregate in Abhängigkeit einer Fahrstrecke eine Betriebsstrategie eingestellt wird, wobei die Fahrstrecke gefahren und mindestens ein Fahrprofil ermittelt und gespeichert und in Abhängigkeit des Fahrprofils die Betriebsstrategie bei einem Wiederbefahren der Fahrstrecke beeinflusst wird.(9), wherein an operating strategy is set for the drive units as a function of a route, wherein the driving distance driven and determined and stored at least one driving profile and the operating strategy is influenced in a re-driving the route depending on the driving profile. 2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass als Daten der Verlauf der Fahrstrecke und/oder ein Höhenprofil der Fahrstrecke ermittelt und gespeichert werden.2. The method according to claim 1, characterized in that the course of the route and / or a height profile of the route are determined and stored as data. 3. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Daten des Fahrprofils, der zeitliche Verlauf von Beschleunigungen, Lastmomenten und/oder Geschwindigkeiten zumindest eines Fahrers ermittelt und gespeichert werden.3. The method according to any one of the preceding claims, characterized in that are determined and stored as data of the driving profile, the time course of accelerations, load moments and / or speeds of at least one driver. 4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Ermitteln und Speichern des Fahrprofils von dem Fahrer initiiert wird.4. The method according to any one of the preceding claims, characterized in that the determining and storing the driving profile is initiated by the driver. 5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Fahrer zum Initiieren aufgefordert wird.5. The method according to any one of the preceding claims, characterized in that the driver is prompted to initiate. 6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Fahrstrecke eine vorbekannte Fahrstrecke verwendet wird.6. The method according to any one of the preceding claims, characterized in that a known route is used as the route. 7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die vorbekannte Fahrstrecke mittels eines Navigationssystems ermittelt/bestimmt wird. 7. The method according to any one of the preceding claims, characterized in that the previously known route is determined / determined by means of a navigation system. 8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass beim Wiederbefahren der Fahrstrecke die ermittelten Fahrprofile miteinander verglichen werden.8. The method according to any one of the preceding claims, characterized in that when re-driving the route, the determined driving profiles are compared. 9. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass beim Wiederbefahren der Fahrstrecke das ermittelte Fahrprofil angepasst, insbesondere interpoliert wird.9. The method according to any one of the preceding claims, characterized in that adapted when re-driving the route, the determined driving profile, in particular interpolated. 10.Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass aus den ermittelten Fahrprofilen ein gemitteltes10.Verfahren according to any one of the preceding claims, characterized in that from the determined driving profiles an averaged Fahrprofil bestimmt wird.Driving profile is determined. 11.Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Betriebsstrategie eine Ladestrategie für mindestens einen der elektrischen Maschine zugeordneten elektrischen11.Verfahren according to any one of the preceding claims, characterized in that as operating strategy, a charging strategy for at least one of the electrical machine associated electrical Speicher verwendet wird.Memory is used. 12. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Betriebsstrategie einen vorbekannten externen Ladevorgang des elektrischen Speichers berücksichtigt.12. The method according to any one of the preceding claims, characterized in that the operating strategy takes into account a previously known external charging of the electrical memory. 13. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Zeitpunkt und/oder Ort des externen Ladevorgangs vorab durch den Fahrer bestimmt wird.13. The method according to any one of the preceding claims, characterized in that a time and / or location of the external charging operation is determined in advance by the driver. 14. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass bei Abweichung von der vorbekannten Fahrstrecke die Betriebsstrategie in Abhängigkeit von dem momentanen Betriebszustand und/oder Fahrtzustand eingestellt wird.14. The method according to any one of the preceding claims, characterized in that in case of deviation from the previously known driving route, the operating strategy is set in dependence on the current operating state and / or driving state. 15. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Fahrprofile mehrerer Fahrstrecken und/oder mehrerer Fahrer ermittelt und gespeichert werden. 15. The method according to any one of the preceding claims, characterized in that driving profiles of several routes and / or multiple drivers are determined and stored. 16. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich der Fahrer vor dem Fahren und/oder Wiederbefahren der Fahrstrecke zu erkennen gibt.16. The method according to any one of the preceding claims, characterized in that the driver is to recognize before driving and / or re-driving the route. 1 /.Vorrichtung zum Betreiben einer Hybridantriebsvorrichtung, insbesondere Durchführung des Verfahrens nach einem oder mehreren der vorhergehenden Ansprüche, wobei die Hybridantriebsvorrichtung zumindest zwei unterschiedliche Antriebsaggregate, insbesondere eine Brennkraftmaschine (8) und eine elektrische Maschine (9), aufweist, mit Mitteln zum Einstellen einer Betriebsstrategie für die Antriebsaggregate in1 /.Vorrichtung for operating a hybrid drive device, in particular performing the method according to one or more of the preceding claims, wherein the hybrid drive device at least two different drive units, in particular an internal combustion engine (8) and an electric machine (9), comprising means for adjusting a Operating strategy for the drive units in Abhängigkeit einer Fahrstrecke, mit Mitteln zum Ermitteln und Speichern eines Fahrprofils beim Fahren der Fahrstrecke und mit Mitteln zum Beeinflussen der Betriebsstrategie in Abhängigkeit des Fahrprofils bei einem Wiederbefahren der Fahrstrecke. Dependency of a route, with means for determining and storing a driving profile while driving the route and with means for influencing the operating strategy as a function of the driving profile in a re-driving the route.
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