DE102012008411A1 - Travel drive of a commercial vehicle - Google Patents
Travel drive of a commercial vehicle Download PDFInfo
- Publication number
- DE102012008411A1 DE102012008411A1 DE201210008411 DE102012008411A DE102012008411A1 DE 102012008411 A1 DE102012008411 A1 DE 102012008411A1 DE 201210008411 DE201210008411 DE 201210008411 DE 102012008411 A DE102012008411 A DE 102012008411A DE 102012008411 A1 DE102012008411 A1 DE 102012008411A1
- Authority
- DE
- Germany
- Prior art keywords
- drive
- hydrostatic
- drive train
- traction
- gear change
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
-
- 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
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/101—Infinitely variable gearings
- B60W10/103—Infinitely variable gearings of fluid type
-
- 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
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
-
- 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
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0015—Disposition of motor in, or adjacent to, traction wheel the motor being hydraulic
-
- 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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
-
- 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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
- B60W2720/106—Longitudinal acceleration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/14—Trucks; Load vehicles, Busses
- B60Y2200/142—Heavy duty trucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/70—Gearings
- B60Y2400/78—Pumps, e.g. jet type
- B60Y2400/785—Pump drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H2061/0425—Bridging torque interruption
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
Die Erfindung betrifft Fahrantrieb eines Nutzfahrzeugs mit einem mechanischen Antriebsstrang, welcher eine Antriebsmaschine, eine erste Trennkupplung, ein Gangwechselgetriebe und wenigstens eine angetriebene Antriebwelle umfasst, einem hydrostatischen Antriebsstrang, welcher eine Antriebsmaschine, ein hydrostatisches Getriebe und wenigstens eine angetriebene Antriebwelle umfasst, sowie einer Recheneinheit, die, insbesondere programmtechnisch, dazu eingerichtet ist, den hydrostatischen Antriebsstrang so anzusteuern, dass eine von einem Gangwechsel in dem Gangwechselgetriebe hervorgerufene Zugkraftunterbrechung zumindest teilweise ausgeglichen wird.The invention relates to a traction drive of a commercial vehicle with a mechanical drive train, which comprises an engine, a first clutch, a gear change transmission and at least one driven drive shaft, a hydrostatic drive train, which includes a prime mover, a hydrostatic transmission and at least one driven drive shaft, and a computing unit, which, in particular programmatically, is adapted to control the hydrostatic drive train such that a traction interruption caused by a gear change in the gear change transmission is at least partially compensated.
Description
Die vorliegende Erfindung betrifft einen Fahrantrieb eines Nutzfahrzeugs, bei dem wenigstens eine Antriebswelle mechanisch von einer Antriebsmaschine, üblicherweise einem Verbrennungsmotor, bspw. Dieselmotor, über eine Trennkupplung und ein Gangwechselgetriebe angetrieben wird.The present invention relates to a traction drive of a commercial vehicle in which at least one drive shaft is mechanically driven by a prime mover, usually an internal combustion engine, for example a diesel engine, via a separating clutch and a gear change transmission.
Stand der TechnikState of the art
Solche Fahrantriebe sind im Stand der Technik wohlbekannt. Diese Fahrantriebe weisen den Nachteil auf, dass während des Gangwechsels eine Zugraftunterbrechung auftritt, die das Fahrverhalten negativ beeinflusst, da sie einen stattfindenden Beschleunigungs- oder Motorbremsvorgang (Schubbetrieb) unterbricht. Dies führt zu unerwünscht unkomfortablen Schaltvorgängen. Des Weiteren sind gerade in schwierigen Geländesituationen (Off-Road) Zugkraftunterbrechungen hinderlich, da diese unter solchen Bedingungen zu einer deutlichen Reduzierung der Fahrzeuggeschwindigkeit führen können. Wird beispielsweise während einer Beschleunigungsphase in einen höheren Gang gewechselt, sinkt die Geschwindigkeit während des Gangwechsels, so dass sie im ungünstigsten Fall nach dem Gangwechsel zu langsam für den neu gewählten Gang ist und wieder heruntergeschaltet werden muss. Die Zugkraftunterbrechung kann damit zu einer Reduzierung der möglichen Geschwindigkeit unter schwierigen Geländesituationen führen und damit die Produktivität verringern.Such travel drives are well known in the art. These traction drives have the disadvantage that during the gear change an interruption of traction occurs, which negatively influences the driving behavior, since it interrupts a take place acceleration or engine braking (overrun). This leads to undesirable uncomfortable switching operations. Furthermore, especially in difficult terrain situations (off-road) traction interruptions hinder, since they can lead under such conditions to a significant reduction in vehicle speed. If, for example, during an acceleration phase in a higher gear changes, the speed decreases during the gear change, so that in the worst case after the gear change is too slow for the newly selected gear and must be downshifted again. The interruption of traction can thus lead to a reduction in the possible speed under difficult terrain situations and thus reduce productivity.
Es ist wünschenswert, eine Zugkraftunterbrechung bei einem Gangwechsel zu vermeiden.It is desirable to avoid a traction interruption during a gear change.
Offenbarung der ErfindungDisclosure of the invention
Erfindungsgemäß wird ein Fahrantrieb eines Nutfahrzeugs mit den Merkmalen der unabhängigen Patentansprüche vorgeschlagen. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche sowie der nachfolgenden Beschreibung.According to the invention, a traction drive of a grooved vehicle with the features of the independent claims is proposed. Advantageous embodiments are the subject of the dependent claims and the following description.
Vorteile der ErfindungAdvantages of the invention
Im Rahmen der Erfindung wird ein Fahrantrieb eines Lastkraftwagens zusätzlich mit einem hydrostatischen Antriebsstrang, der während eines Gangwechsels eine Zugkraft, welche eine Zugkraftunterbrechung zumindest teilweise ausgleicht, an eine Antriebswelle (also eine Welle (d. h. rotierendes Bauteil), welche ein Antriebsmoment vom Motor an das Rad überträgt) des Lastkraftwagens bereitstellt. Der hydrostatische Antriebsstrang weist dazu eine Antriebsmaschine und ein von dieser angetriebenes hydrostatisches Getriebe auf, welches wiederum die Antriebswelle des hydrostatischen Antriebsstrangs antreibt. Ein hydrostatisches Getriebe weist zumindest eine Hydraulikpumpe und zumindest einen damit in einem Hydraulikkreislauf verbundenen Hydraulikmotor auf. Der Fahrantrieb weist weiterhin eine Steuereinrichtung auf (Recheneinheit), die programmtechnisch dazu eingerichtet ist, den hydrostatischen Antriebsstrang so anzusteuern, dass dieser die ausgleichende Zugkraft liefern kann. Die Erfindung schafft eine robuste und zweckmäßige Möglichkeit, um eine Zugkraftunterbrechung während eines Gangwechsels bei Lastkraftwagen zu vermeiden. Der Schaltvorgang wird komfortabler, die Geländefahreigenschaften werden verbessert, da starke Geschwindigkeitsabnahmen während des Schaltvorganges verhindert werden.In the context of the invention, a traction drive of a truck is additionally provided with a hydrostatic drive train which during a gear change, a tensile force which at least partially balances a traction interruption, to a drive shaft (ie a shaft (ie rotating component), which is a drive torque from the engine to the wheel transfers) of the truck. For this purpose, the hydrostatic drive train has an engine and a hydrostatic transmission driven by it, which in turn drives the drive shaft of the hydrostatic drive train. A hydrostatic transmission has at least one hydraulic pump and at least one hydraulic motor connected thereto in a hydraulic circuit. The traction drive also has a control device (arithmetic unit), which is set up by the program to control the hydrostatic drive train in such a way that it can supply the compensating traction force. The invention provides a robust and convenient way to avoid a traction interruption during a gear change in trucks. Gear shifting becomes more comfortable, off-road performance is improved by preventing heavy deceleration during gear shifting.
Die Erfindung ist besonders vorteilhaft, da das hydrostatische Getriebe von der ohnehin vorhandenen und arbeitenden Antriebsmaschine, insbesondere Verbrennungsmotor, angetrieben werden kann, so dass für den hydrostatischen Zusatzantrieb keine eigene Antriebsmaschine notwendig ist. Hydrostatische Fahrantriebe sind an sich bekannt, praxiserprobt und ausgereift.The invention is particularly advantageous because the hydrostatic transmission of the already existing and working drive machine, in particular internal combustion engine, can be driven, so that no separate drive machine is necessary for the hydrostatic auxiliary drive. Hydrostatic travel drives are known per se, proven in practice and mature.
Gemäß einer bevorzugten Ausführungsform ist die Antriebswelle des hydrostatischen Antriebsstrangs von der Antriebswelle des mechanischen Antriebsstrangs verschieden. Somit treibt das hydrostatische Getriebe wenigstens ein Rad an, welches nicht mechanisch über das Gangwechselgetriebe angetrieben wird. Somit wird der Gangwechsel nicht negativ beeinflusst. Vorzugsweise ist die Antriebswelle des hydrostatischen Antriebsstrangs eine Vorderachse des Lastkraftwagens. Vorzugsweise ist eine Antriebswelle des mechanischen Antriebsstrangs eine Mittel- oder Hinterachse des Lastkraftwagens. Vorzugsweise umfasst der mechanische Antriebsstrang auch eine Kardanwelle zum Übertragen eines Drehmoments vom Gangwechselgetriebe an die Antriebswelle des mechanischen Antriebsstrangs.According to a preferred embodiment, the drive shaft of the hydrostatic drive train is different from the drive shaft of the mechanical drive train. Thus, the hydrostatic transmission drives at least one wheel which is not mechanically driven by the gear change transmission. Thus, the gear change is not adversely affected. Preferably, the drive shaft of the hydrostatic drive train is a front axle of the truck. Preferably, a drive shaft of the mechanical drive train is a center or rear axle of the truck. Preferably, the mechanical drive train also includes a propeller shaft for transmitting torque from the gear change transmission to the drive shaft of the mechanical drive train.
Eine Antriebswelle ist vorzugsweise mit einem oder mit zwei Rädern verbunden. Bei dem hydrostatischen Motor kann es sich insbesondere auch um einen Radnabenmotor mit einer dementsprechend kurzen Antriebswelle mit nur einem Rad handeln. Das hydrostatische Getriebe weist in bevorzugter Ausgestaltung genau eine Hydraulikpumpe und genau einen oder genau zwei damit in einem Hydraulikkreislauf verbundenen Hydraulikmotoren auf.A drive shaft is preferably connected to one or two wheels. The hydrostatic motor may in particular also be a wheel hub motor with a correspondingly short drive shaft with only one wheel. In a preferred embodiment, the hydrostatic transmission has exactly one hydraulic pump and exactly one or exactly two hydraulic motors connected thereto in a hydraulic circuit.
Ein Nutzfahrzeug, insbesondere ein Lastkraftwagen, mit einem erfindungsgemäßen Fahrantrieb ist ebenfalls Gegenstand der Erfindung. Die Erfindung ist insbesondere für Fahrzeuge mit einer Antriebsmaschine mit hoher Drehmomentabgabe (größer 1.000 Nm) geeignet, die wenigstens eine Fahrzeugachse aufweisen, die nicht Teil des mechanischen Antriebsstrangs ist, also nicht von dem Verbrennungsmotor angetrieben wird. Die wenigstens eine Antriebswelle des hydrostatischen Antriebsstrangs ist somit von der wenigstens einen Antriebswelle des mechanischen Antriebsstrangs verschieden.A commercial vehicle, in particular a truck, with a drive according to the invention is also an object of the invention. The invention is particularly suitable for vehicles with a prime mover with a high torque output (greater than 1,000 Nm), which have at least one vehicle axle, which is not part of the mechanical drive train, that is not driven by the internal combustion engine. The at least one drive shaft of the hydrostatic drive train is thus different from the at least one drive shaft of the mechanical drive train.
Weitere Vorteile und Ausgestaltungen der Erfindung ergeben sich aus der Beschreibung und der beiliegenden Zeichnung.Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.
Es versteht sich, dass die vorstehend genannten und die nachfolgend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination indicated, but also in other combinations or in isolation, without departing from the scope of the present invention.
Die Erfindung ist anhand eines Ausführungsbeispiels in der Zeichnung schematisch dargestellt und wird im Folgenden unter Bezugnahme auf die Zeichnung ausführlich beschrieben.The invention is illustrated schematically with reference to an embodiment in the drawing and will be described in detail below with reference to the drawing.
Figurenbeschreibungfigure description
Detaillierte Beschreibung der ZeichnungDetailed description of the drawing
In
Der Fahrantrieb
Der Gangwechsel kann entweder manuell durch den Fahrer (sogenanntes Schaltgetriebe) oder automatisch (sogenanntes Automatikgetriebe) herbeigeführt werden. Dazu wird die Trennkupplung
Zur Behebung dieser Probleme weist der Fahrantrieb
Das Übersetzungsverhältnis zwischen Hydraulikpumpe
Zur Ansteuerung des Fahrantriebs
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210008411 DE102012008411A1 (en) | 2012-04-27 | 2012-04-27 | Travel drive of a commercial vehicle |
| PCT/EP2013/057852 WO2013160144A1 (en) | 2012-04-27 | 2013-04-16 | Propulsion drive of a utility vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210008411 DE102012008411A1 (en) | 2012-04-27 | 2012-04-27 | Travel drive of a commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102012008411A1 true DE102012008411A1 (en) | 2013-10-31 |
Family
ID=48092986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE201210008411 Withdrawn DE102012008411A1 (en) | 2012-04-27 | 2012-04-27 | Travel drive of a commercial vehicle |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102012008411A1 (en) |
| WO (1) | WO2013160144A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3026683B1 (en) * | 2014-10-03 | 2016-12-09 | Poclain Hydraulics Ind | METHOD FOR CONTROLLING A DEVICE FOR TRANSMITTING A VEHICLE |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6022290A (en) * | 1998-09-09 | 2000-02-08 | Chrysler Corporation | Power transfer system for vehicle with power-Interrupt auto-manual transmission, alternate means for providing torque to driveline, and engine throttle controls |
| US6319168B1 (en) * | 2000-04-25 | 2001-11-20 | General Motors Corporation | Apparatus and method for active transmission synchronization and shifting |
| DE10316862A1 (en) * | 2003-04-11 | 2004-10-21 | Deere & Company, Moline | Drive system for vehicles |
| US7125362B2 (en) * | 2004-01-23 | 2006-10-24 | Eaton Corporation | Hybrid powertrain system including smooth shifting automated transmission |
| WO2007058590A2 (en) * | 2005-11-15 | 2007-05-24 | Stridsberg Innovation Ab | Hybrid vehicle with soft shafts |
| DE102007011791A1 (en) * | 2007-03-12 | 2008-09-18 | Robert Bosch Gmbh | Drive train for vehicle, has engine and clutch that are connected in upstream direction, hydraulic aggregate and transmission that are connected in downstream direction, and another hydraulic aggregate connected downstream of transmission |
-
2012
- 2012-04-27 DE DE201210008411 patent/DE102012008411A1/en not_active Withdrawn
-
2013
- 2013-04-16 WO PCT/EP2013/057852 patent/WO2013160144A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013160144A1 (en) | 2013-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R012 | Request for examination validly filed | ||
| R016 | Response to examination communication | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |