WO2012049134A1 - Brake system for motor vehicles - Google Patents
Brake system for motor vehicles Download PDFInfo
- Publication number
- WO2012049134A1 WO2012049134A1 PCT/EP2011/067669 EP2011067669W WO2012049134A1 WO 2012049134 A1 WO2012049134 A1 WO 2012049134A1 EP 2011067669 W EP2011067669 W EP 2011067669W WO 2012049134 A1 WO2012049134 A1 WO 2012049134A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brake
- piston
- pressure
- brake system
- electronic control
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/44—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
- B60T8/445—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems replenishing the released brake fluid volume into the brake piping
Definitions
- the present invention relates to a brake system for power ⁇ vehicles, which is controlled both by the driver and independently of the driver, with
- a brake pedal for actuating a master cylinder with at least one hydraulic piston, a first and a second pressure chamber, which are set upon actuation of the master cylinder under a first and a second brake system pressure and feed pressurized fluid under these brake system pressures in associated brake circuits,
- Fill level monitoring device provided pressure medium reservoir having the pressure chambers associated ports, with hydraulically controllable wheel brakes associated with wheels of the motor vehicle, whose rotation is detected by wheel sensors,
- a wheel brake pressure modulation unit having per wheel brake an inlet valve and an outlet valve for adjusting wheel individual brake pressures derived from the pressures in the first and second brake circuit, wherein in the non-driven state, the intake valves depending on the forward ⁇ suited brake circuit pressure and the exhaust valves are closed,
- Such a brake system with a hydraulic operating ⁇ brake system and another service brake system is known from DE 10 2009 026 973 AI.
- the prior art brake system to a hydraulic service brake system associated brake booster which not only the operating force, ie the force exerted on a brake actuator on the master cylinder muscle strength, but also can generate a force that exerted by a driver on the master cylinder operating force directed against.
- the force generated by the brake booster, the actuating force directed counter to force is referred to here as a pedal force, for example, on a (foot)
- Brake pedal or a (hand) brake lever acts.
- the brake booster of the prior art brake system also forms a pedal simulator for generating or increasing a pedal force that has to apply a driver to a brake operation with muscle power.
- the object underlying the present invention is to provide measures that enable a combination of a particular electrohydraulic brake booster, which exerts a force acting counter to the Ped ⁇ dalbetuschist on the pedal, with an electro-hydraulic service brake system.
- FIG. 1 of the drawing shows a hydraulic circuit diagram of a first embodiment
- FIG. 2 shows a hydraulic circuit diagram of a second embodiment of the brake system according to the invention.
- the braking system illustrated in the drawing comprises We ⁇ sentlichen an actuatable by means of an actuating or brake pedal 1 hydraulic master brake cylinder 2, a hydraulic master cylinder 2 associated pressure fluid reservoir 3, a motor-pump unit 4, an elec- electrically controllable device 5 for generating an amplifying force, electrically controllable pressure modulation or inlet and outlet valves 6a-6d, 7a-7d, to whose output terminals wheel brakes 8, 9, 10, 11 of a motor vehicle, not shown, are connected first electronic control unit 12 and a second electronic control unit 13, which serve to control the electrically controllable components.
- wheel sensors are provided which are provided with the reference numerals 28, 29, 30 and 31.
- the input terminals of the intake valves 6a-6d are supplied by means of system pressure lines 22a, 22b by pressing, referred to as a brake system pressures, wherein Drucksenso ⁇ ren 32, 33 are provided for detecting the pressure prevailing in the system pressure lines 22a, 22b pressures.
- Kontownleitun- gen 23a, 23b connect the output terminals of the Auslassven ⁇ tile 7a-7d with the at atmospheric pressure pressure fluid reservoir.
- the hydraulic master cylinder 2 which can be regarded as an actuating unit of the brake system according to the invention, in a schematically indicated housing 40, a hydraulic piston 15 which is designed as a stepped piston and hydraulic chambers or pressure chambers 16, 17, limited.
- a first return spring 18 arranged in the second pressure chamber 17 biases the master cylinder piston 15 counter to the actuating direction.
- the pressure chambers 16, 17 are on the one hand via the piston 15 limited Nachlaufsammlung 31, 35 with the pressure medium reservoir 3 in Ver. Binding, these, the pressure equalization in the unactuated state serving connections by means of a respective electromagnetically actuated, preferably normally open (SO) 2/2-way valve 38, 39 are shut off.
- a respective electromagnetically actuated, preferably normally open (SO) 2/2-way valve 38, 39 are shut off.
- SO normally open
- a device 20 is provided, which is arranged outside of the master cylinder 2.
- the amount of the contents provided in the pressure medium storage container 3 hydraulic (brake) liquid is detected by a level ⁇ monitoring device, which is provided with the reference numeral 34th
- Main cylinder piston 15 in the housing 40 delimits a hydraulic booster chamber 51 which receives a ge with the brake pedal 1 coupled ⁇ further hydraulic piston 12.
- the piston 12 is preferably formed in two parts and be ⁇ stands from a radially inner first piston member 13, which is a piston rod 60 with the brake pedal 1 in force ⁇ transmitting connection, and a cylindrical second piston member 14, in which the first piston member 13th to be led.
- the further piston 12 is biased counter to the actuating direction by a second return spring 19, which is arranged in an unspecified cylindrical bore of the master cylinder piston 15 and which is axially supported on the first piston part 13.
- a relative movement of the two piston parts 13, 14 relative to one another is limited by axial stops 58, 59 formed on the end of the piston 12 facing away from the master brake cylinder 2.
- the design of the pressure in the booster chamber 51 acted upon surfaces of the master cylinder piston 15 and the (pedal) piston 12 is preferably made such that the effective piston surface of the brake pedal 1 coupled to the piston 12 is smaller than the effective piston area of the master brake cylinder piston 15.
- the actuation paths of the brake pedal 1 and the piston 12 are detected by two position sensing devices 42, 43, whose output signals represent the initiated on the brake pedal 1 driver's request.
- the above-mentioned means 5 for generating the boosting force is designed as a hydraulic controllable pressure source or a single-circuit electrohydraulic actuator, the piston 47 of a schematically indicated electric motor 46 with the interposition of a non-illustrated Rotation translation gear is actuated.
- a schematically indicated electric motor 46 with the interposition of a non-illustrated Rotation translation gear is actuated.
- the piston 47 defines a pressure chamber 48, which is connected to the above-mentioned booster chamber 51, so that by the action of the im
- Pressure chamber 48 is applied hydraulic pressure in the direction of actuation acting on the master cylinder piston 15 boosting force is generated.
- a sensor 41 for indirect detection of the boosting force is formed as a pressure sensor ⁇ .
- the pressure medium reservoir 3 and the pressure chamber 48 of the controllable pressure source 5 associated annular space 52 via a formed in the housing 40 further annular space 61 leading hydraulic connection
- connection portion 50 provided.
- connection portion 50 connected cable 53, in which a normally open (NO) is inserted 2/2-way valve 54 permits at a magnification ⁇ fication the boost chamber 51 or the pressure chamber 48, a After sucking off pressure medium from the pressure fluid reservoir 3.
- NO normally open
- the previously mentioned motor-pump unit 4 includes a dual-circuit hydraulic pump, the stages 25a, 25b, with the interposition of a respective non-return valve 55a, 55b to which the Einlassven ⁇ tilen 6a - leading 6d system pressure lines 22a, 22b are connected.
- the pumps 25a, 25b are designed, for example, as three-piston pumps, wherein the total of six pistons are actuated by a common eccentric mounted on the motor shaft.
- the further service brake system operates with a pump-based pressure booster, the pump pressures controlled by the valves 26, 27 via the check valves 55a, 55b and the hydraulic connections 22a, 22b to both the chambers 16, 17 of the master cylinder 2 and the intake valves 6a-6d are switched on.
- the two electronic control units 12, 13 are each assigned a separate power supply 44, 45.
- the first electronic control and regulation unit 12 as a single gangs relieven the output signals of the first path detection ⁇ device 42, the wheel sensors 28, 29, 30, 31 and the
- the unit is controlled according to a predefi ⁇ ned characteristic, which converts the displacement values detected by the first position detection means 42, the driver's request representing into a target brake system pressure value.
- FIG. 1 device for a limited pressure equalization between the two brake system pressures which is provided in Fig. 2 by reference numeral 21, but consists of a guided in the master cylinder piston 15 pressure compensation piston 66, on which on the one hand, the first return spring 18 and on the other hand, a further compression spring 62 is supported, which arranged in a limited in the master brake cylinder piston 15 from the pressure compensation piston 66 pressure chamber 63 is.
- pressure medium passages 64, 65 are formed in the master brake cylinder piston 15, which open on the one hand (64) in the first pressure chamber 16 and on the other hand in the pressure chamber 63.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Bremsanlage für Kra t ahrzeuge Brake system for vehicles
Die vorliegende Erfindung betrifft eine Bremsanlage für Kraft¬ fahrzeuge, die sowohl vom Fahrzeugführer als auch unabhängig vom Fahrzeugführer ansteuerbar ist, mit The present invention relates to a brake system for power ¬ vehicles, which is controlled both by the driver and independently of the driver, with
a) einem Bremspedal zum Betätigen eines Hauptbremszylinders mit mindestens einem hydraulischen Kolben, einem ersten und einem zweiten Druckraum, die bei der Betätigung des Hauptbremszylinders unter einen ersten und einen zweiten Bremssystemdruck gesetzt werden und unter diese Bremssystemdrücke gesetztes Druckmittel in zugeordnete Bremskreise einspeisen, a) a brake pedal for actuating a master cylinder with at least one hydraulic piston, a first and a second pressure chamber, which are set upon actuation of the master cylinder under a first and a second brake system pressure and feed pressurized fluid under these brake system pressures in associated brake circuits,
b) einem den unter Atmosphärendruck stehenden, mit einer b) one under atmospheric pressure, with a
Füllstandsüberwachungseinrichtung versehenen Druckmittelvorratsbehälter, der den Druckräumen zugeordnete Anschlüsse aufweist, mit hydraulisch ansteuerbaren Radbremsen, die Rädern des Kraftfahrzeuges zugeordnet sind, deren Drehung durch Radsensoren erfasst wird, Fill level monitoring device provided pressure medium reservoir having the pressure chambers associated ports, with hydraulically controllable wheel brakes associated with wheels of the motor vehicle, whose rotation is detected by wheel sensors,
c) einer Wegerfassungseinrichtung, die den Betätigungsweg des Bremspedals oder eines mit dem Bremspedal verbundenen Kol¬ bens erfasst, c) a displacement detecting means for detecting the actuation of the brake pedal or a brake pedal connected to the Kol ¬ bens,
d) einer Hydraulikeinheit, mit einem Motor-Pumpenaggregat, das dazu eingerichtet ist, Druckmittel in die beiden d) a hydraulic unit, with a motor-pump unit, which is adapted to pressure medium in the two
Bremskreise einzuspeisen sowie elektromagnetisch betätigten Ventilen, zur Kontrolle der Pumpenvolumenströme, e) einer Radbremsdruck-Modulationseinheit, die pro Radbremse ein Einlassventil sowie ein Auslassventil zum Einstellen radindividueller Bremsdrücke aufweist, die aus den Drücken im ersten bzw. zweiten Bremskreis abgeleitet werden, wobei im nicht angesteuerten Zustand die Einlassventile die je¬ weiligen Bremskreisdrücke weiterleiten und die Auslassventile gesperrt sind, E) a wheel brake pressure modulation unit having per wheel brake an inlet valve and an outlet valve for adjusting wheel individual brake pressures derived from the pressures in the first and second brake circuit, wherein in the non-driven state, the intake valves depending on the forward ¬ weiligen brake circuit pressure and the exhaust valves are closed,
f) mit einer Einrichtung zum Erzeugen einer Verstärkungskraft, die in Betätigungsrichtung auf den Kolben des Hauptbremszylinders wirkt, sowie f) with a device for generating an amplifying force in the direction of actuation of the piston of the Master cylinder acts, as well
g) wenigstens einer elektronischen Steuer- und Regeleinheit. g) at least one electronic control unit.
Eine derartige Bremsanlage mit einem hydraulischen Betriebs¬ bremssystem und einem weiteren Betriebsbremssystem ist aus der DE 10 2009 026 973 AI bekannt. Dabei weist die vorbekannte Bremsanlage einen dem hydraulischen Betriebsbremssystem zugeordneten Bremskraftverstärker auf, der nicht nur die Betätigungskraft, d.h. die zu einer Bremsbetätigung auf den Hauptbremszylinder ausgeübte Muskelkraft, verstärkt, sondern der auch eine Kraft erzeugen kann, die der von einem Fahrzeugführer auf den Hauptbremszylinder ausgeübten Betätigungskraft entgegen gerichtet ist. Die vom Bremskraftverstärker erzeugte, der Betätigungskraft entgegen gerichtete Kraft wird hier als Pedalkraft bezeichnet, die beispielsweise auf ein (Fuß-) Such a brake system with a hydraulic operating ¬ brake system and another service brake system is known from DE 10 2009 026 973 AI. In this case, the prior art brake system to a hydraulic service brake system associated brake booster, which not only the operating force, ie the force exerted on a brake actuator on the master cylinder muscle strength, but also can generate a force that exerted by a driver on the master cylinder operating force directed against. The force generated by the brake booster, the actuating force directed counter to force is referred to here as a pedal force, for example, on a (foot)
Bremspedal oder einen (Hand- ) Bremshebel wirkt. Brake pedal or a (hand) brake lever acts.
Der Bremskraftverstärker der vorbekannten Bremsanlage bildet zugleich einen Pedalsimulator zum Erzeugen oder Erhöhen einer Pedalkraft, die ein Fahrzeugführer zu einer Bremsbetätigung mit Muskelkraft aufbringen muss. The brake booster of the prior art brake system also forms a pedal simulator for generating or increasing a pedal force that has to apply a driver to a brake operation with muscle power.
In der DE 10 2009 026 973 AI wird vorgeschlagen, ein erstes, einen Vakuumbremskraftverstärker umfassendes, hydraulisches Betriebsbremssystem mit einem weiteren, elektromechanischen Betriebsbremssystem zu kombinieren und es wird erwähnt, dass als weiteres Betriebsbremssystem auch ein elektrohydraulisches in Frage kommt. Jedoch wird weder ein Hinweis darauf gegeben, wie ein erstes Betriebsbremssystem mit einem elektrohydrauli- schen Bremskraftverstärker, der eine der Pedalbetätigung entgegen gerichtete Kraft auf das Pedal ausübt, aufzubauen wäre noch wie dieser mit einem weiteren Betriebsbremssystem zu kombinieren ist, das ebenfalls als elektrohydraulisches System ausgebildet ist. Die vorliegende Erfindung geht von der Erkenntnis aus, dass gerade diese Kombination aus einem ersten Betriebsbremssystem mit einem elektrohydraulischen Bremskraftverstärker und einem weiteren elektrohydraulischen Betriebsbremssystem die besten Eigenschaften bezüglich der Kriterien Funktion und Bauraumbedarf bietet. In DE 10 2009 026 973 AI it is proposed to combine a first, a vacuum brake booster comprehensive, hydraulic service brake system with another, electro-mechanical service brake system and it is mentioned that as an additional service brake system also an electro-hydraulic comes into question. However, neither is there any indication as to how a first service brake system with an electrohydraulic brake booster which exerts pedal force on the pedal would still be constructed, as it is to be combined with another service brake system, also designed as an electrohydraulic system is. The present invention is based on the recognition that it is precisely this combination of a first service brake system with an electrohydraulic brake booster and a further electrohydraulic service brake system that offers the best features with regard to the function and space requirement.
Ausgehend von dem beschriebenen Stand der Technik besteht die der vorliegenden Erfindung zugrunde liegende Aufgabe darin, Maßnahmen anzugeben, die eine Kombination eines insbesondere elektrohydraulischen Bremskraftverstärkers, der eine der Pe¬ dalbetätigung entgegen gerichtete Kraft auf das Pedal ausübt, mit einem elektrohydraulischen Betriebsbremssystem ermöglichen . Based on the described prior art, the object underlying the present invention is to provide measures that enable a combination of a particular electrohydraulic brake booster, which exerts a force acting counter to the Ped ¬ dalbetätigung on the pedal, with an electro-hydraulic service brake system.
Diese Aufgabe wird erfindungsgemäß durch die im Hauptanspruch angegebenen technischen Merkmale gelöst. This object is achieved by the features specified in the main claim technical characteristics.
Vorteilhafte Weiterbindungen des Erfindungsgegenstandes sind in den Unteransprüchen 2 bis 15 angegeben. Advantageous further developments of the subject invention are specified in the subclaims 2 to 15.
Die vorliegende Erfindung wird in der folgenden Beschreibung im Zusammenhang mit der beiliegenden schematischen Zeichnung an zwei Ausführungsbeispielen näher erläutert. Dabei zeigt Figur 1 der Zeichnung ein hydraulisches Schaltbild einer ersten Aus führungs form und Fig. 2 ein hydraulisches Schaltbild einer zweiten Aus führungs form der erfindungsgemäßen Bremsanlage. The present invention will be explained in more detail in the following description in conjunction with the accompanying schematic drawing of two embodiments. FIG. 1 of the drawing shows a hydraulic circuit diagram of a first embodiment, and FIG. 2 shows a hydraulic circuit diagram of a second embodiment of the brake system according to the invention.
Die in der Zeichnung dargestellte Bremsanlage umfasst im We¬ sentlichen einen mittels eines Betätigungs- bzw. Bremspedals 1 betätigbaren hydraulischen Hauptbremszylinder 2, einen dem hydraulischen Hauptbremszylinder 2 zugeordneten Druckmittelvorratsbehälter 3, ein Motor-Pumpen-Aggregat 4, eine elekt- risch steuerbare Einrichtung 5 zum Erzeugen einer Verstärkungskraft, elektrisch steuerbare Druckmodulations- bzw. Ein- lass- und Auslassventile 6a-6d, 7a-7d, an deren Ausgangsan¬ schlüsse Radbremsen 8, 9, 10, 11 eines nicht dargestellten Kraftfahrzeuges angeschlossen sind, eine erste elektronische Steuer- und Regeleinheit 12 sowie eine zweite elektronische Steuer- und Regeleinheit 13, die der Ansteuerung der elektrisch steuerbaren Komponenten dienen. Um Drehzahlen nicht dargestellter Fahrzeugräder zu erfassen sind Radsensoren vorgesehen, die mit den Bezugszeichen 28, 29, 30 und 31 versehen sind. Die Eingangsanschlüsse der Einlassventile 6a-6d werden mittels Systemdruckleitungen 22a, 22b mit Drücken versorgt, die als Bremssystemdrücke bezeichnet werden, wobei Drucksenso¬ ren 32, 33 zum Erfassen dieser in den Systemdruckleitungen 22a, 22b herrschenden Drücke vorgesehen sind. Rücklaufleitun- gen 23a, 23b verbinden die Ausgangsanschlüsse der Auslassven¬ tile 7a-7d mit dem unter Atmosphärendruck stehenden Druckmittelvorratsbehälter 3. The braking system illustrated in the drawing comprises We ¬ sentlichen an actuatable by means of an actuating or brake pedal 1 hydraulic master brake cylinder 2, a hydraulic master cylinder 2 associated pressure fluid reservoir 3, a motor-pump unit 4, an elec- electrically controllable device 5 for generating an amplifying force, electrically controllable pressure modulation or inlet and outlet valves 6a-6d, 7a-7d, to whose output terminals wheel brakes 8, 9, 10, 11 of a motor vehicle, not shown, are connected first electronic control unit 12 and a second electronic control unit 13, which serve to control the electrically controllable components. In order to detect speeds of unillustrated vehicle wheels, wheel sensors are provided which are provided with the reference numerals 28, 29, 30 and 31. The input terminals of the intake valves 6a-6d are supplied by means of system pressure lines 22a, 22b by pressing, referred to as a brake system pressures, wherein Drucksenso ¬ ren 32, 33 are provided for detecting the pressure prevailing in the system pressure lines 22a, 22b pressures. Rücklaufleitun- gen 23a, 23b connect the output terminals of the Auslassven ¬ tile 7a-7d with the at atmospheric pressure pressure fluid reservoir. 3
Wie der Zeichnung weiterhin zu entnehmen ist, weist der hydraulische Hauptbremszylinder 2, der als eine Betätigungseinheit der erfindungsgemäßen Bremsanlage angesehen werden kann, in einem schematisch angedeuteten Gehäuse 40 einen hydraulischen Kolben 15 auf, der als Stufenkolben ausgebildet ist und hydraulische Kammern bzw. Druckräume 16, 17, begrenzt. Dabei wird der erste Druckraum 16 von der Ringfläche des Stufenkol¬ bens 15 und der zweite Druckraum 17 von dessen Stirnfläche be¬ grenzt, so dass der hydraulischen Kolben 15 zusammen mit dem ihn umgreifenden Abschnitt des Gehäuses 40 einen zweikrei- sigen Hauptbremszylinder bildet. Eine im zweiten Druckraum 17 angeordnete erste Rückstellfeder 18 spannt den Hauptzylinder- kolben 15 entgegen der Betätigungsrichtung vor. Die Druckräume 16, 17 stehen einerseits über vom Kolben 15 begrenzte Nachlaufräume 31, 35 mit dem Druckmittelvorratsbehälter 3 in Ver- bindung, wobei diese, dem Druckausgleich im unbetätigten Zustand dienende Verbindungen mittels je eines elektromagnetisch betätigbaren, vorzugsweise stromlos offenen (SO-) 2/2-Wege- ventils 38, 39 absperrbar sind. An die Druck-räume 16, 17 sind die vorhin genannten Systemdruckleitungen 22a, 22b angeschlossen, die getrennten Bremskreisen I, II zugeordnet sind. Um einen begrenzten Druckausgleich zwischen den beiden Bremskreisen I, II zu ermöglichen ist eine Einrichtung 20 vorgesehen, die außerhalb des Hauptbremszylinders 2 angeordnet ist. Die Menge der im Druckmittelvorratsbehälter 3 bereit gehaltenen hydraulischen (Brems- ) Flüssigkeit wird mittels einer Füllstands¬ überwachungseinrichtung erfasst, die mit dem Bezugszeichen 34 versehen ist. As the drawing also shows, the hydraulic master cylinder 2, which can be regarded as an actuating unit of the brake system according to the invention, in a schematically indicated housing 40, a hydraulic piston 15 which is designed as a stepped piston and hydraulic chambers or pressure chambers 16, 17, limited. Here, the first pressure chamber 16 17 BE of the end face ¬ bounded by the annular surface of Stufenkol ¬ bens 15 and the second pressure chamber, so that the hydraulic piston 15 forms a two separate cir- sigen master brake cylinder together with the engaging around him portion of the housing 40th A first return spring 18 arranged in the second pressure chamber 17 biases the master cylinder piston 15 counter to the actuating direction. The pressure chambers 16, 17 are on the one hand via the piston 15 limited Nachlaufräume 31, 35 with the pressure medium reservoir 3 in Ver. Binding, these, the pressure equalization in the unactuated state serving connections by means of a respective electromagnetically actuated, preferably normally open (SO) 2/2-way valve 38, 39 are shut off. To the pressure chambers 16, 17, the aforementioned system pressure lines 22a, 22b are connected, the separate brake circuits I, II are assigned. In order to allow a limited pressure equalization between the two brake circuits I, II, a device 20 is provided, which is arranged outside of the master cylinder 2. The amount of the contents provided in the pressure medium storage container 3 hydraulic (brake) liquid is detected by a level ¬ monitoring device, which is provided with the reference numeral 34th
Wie weiterhin in der Zeichnung dargestellt ist, wird vom As further shown in the drawing, is from
Hauptzylinderkolben 15 im Gehäuse 40 eine hydraulische Verstärkerkammer 51 begrenzt, die einen mit dem Bremspedal 1 ge¬ koppelten weiteren hydraulischen Kolben 12 aufnimmt. Der Kolben 12 ist dabei vorzugsweise zweiteilig ausgebildet und be¬ steht aus einem radial innen liegenden ersten Kolbenteil 13, der über eine Kolbenstange 60 mit dem Bremspedal 1 in kraft¬ übertragender Verbindung steht, sowie einem zylinderförmigen zweiten Kolbenteil 14, im der der erste Kolbenteil 13 geführt wird. Der weitere Kolben 12 wird entgegen der Betätigungsrichtung durch eine zweite Rückstellfeder 19 vorgespannt, die in einer nicht näher bezeichneten zylindrischen Bohrung des Hauptbremszylinderkolbens 15 angeordnet ist und die sich am ersten Kolbenteil 13 axial abstützt. Eine Relativbewegung der beiden Kolbenteile 13, 14 zueinander wird durch an dem dem Hauptbremszylinder 2 abgewandten Ende des Kolbens 12 ausgebildete axiale Anschläge 58, 59 begrenzt. Dabei ist die Auslegung von vom Druck in der Verstärkerkammer 51 beaufschlagten Flächen des Hauptzylinderkolbens 15 und des ( Pedal- ) Kolbens 12 vorzugsweise derart getroffen, dass die wirksame Kolbenfläche des mit dem Bremspedal 1 gekoppelten Kolbens 12 kleiner ist als die wirksame Kolbenfläche des Hauptbremszylinderkolbens 15. Die Betätigungswege des Bremspedals 1 bzw. des Kolbens 12 werden von zwei Wegerfassungseinrichtungen 42, 43 erfasst, deren Ausgangssignale den am Bremspedal 1 eingeleiteten Fahrerwunsch repräsentieren. Main cylinder piston 15 in the housing 40 delimits a hydraulic booster chamber 51 which receives a ge with the brake pedal 1 coupled ¬ further hydraulic piston 12. The piston 12 is preferably formed in two parts and be ¬ stands from a radially inner first piston member 13, which is a piston rod 60 with the brake pedal 1 in force ¬ transmitting connection, and a cylindrical second piston member 14, in which the first piston member 13th to be led. The further piston 12 is biased counter to the actuating direction by a second return spring 19, which is arranged in an unspecified cylindrical bore of the master cylinder piston 15 and which is axially supported on the first piston part 13. A relative movement of the two piston parts 13, 14 relative to one another is limited by axial stops 58, 59 formed on the end of the piston 12 facing away from the master brake cylinder 2. The design of the pressure in the booster chamber 51 acted upon surfaces of the master cylinder piston 15 and the (pedal) piston 12 is preferably made such that the effective piston surface of the brake pedal 1 coupled to the piston 12 is smaller than the effective piston area of the master brake cylinder piston 15. The actuation paths of the brake pedal 1 and the piston 12 are detected by two position sensing devices 42, 43, whose output signals represent the initiated on the brake pedal 1 driver's request.
Außerdem ist aus der zeichnerischen Darstellung der erfindungsgemäßen Bremsanlage ersichtlich, dass die oben genannte Einrichtung 5 zum Erzeugen der Verstärkungskraft, als eine hydraulische steuerbare Druckquelle bzw. ein einkreisiger elektrohydraulischer Aktuator ausgebildet ist, dessen Kolben 47 von einem schematisch angedeuteten Elektromotor 46 unter Zwischenschaltung eines nicht dargestellten Rotations- Translationsgetriebes betätigbar ist. Ein der Erfassung der Rotorlage des Elektromotors 46 dienender, lediglich schema¬ tisch angedeuteter Rotorlagensensor ist mit dem BezugszeichenIt is also apparent from the graphic representation of the brake system according to the invention that the above-mentioned means 5 for generating the boosting force, is designed as a hydraulic controllable pressure source or a single-circuit electrohydraulic actuator, the piston 47 of a schematically indicated electric motor 46 with the interposition of a non-illustrated Rotation translation gear is actuated. One of the detection of the rotor position of the electric motor 46 serving, only schematically ¬ tically indicated rotor position sensor is denoted by the reference numeral
49 bezeichnet. Optional können weitere, nicht dargestellte Sensoren zusätzliche Motorparameter, wie die Motorströme oder die Wicklungstemperatur θ, erfassen. Der Kolben 47 begrenzt einen Druckraum 48, der mit der vorhin erwähnten Verstärkerkammer 51 verbunden ist, sodass durch die Wirkung des im 49 denotes. Optionally, further, not shown sensors additional motor parameters, such as the motor currents or the winding temperature θ detect. The piston 47 defines a pressure chamber 48, which is connected to the above-mentioned booster chamber 51, so that by the action of the im
Druckraum 48 eingesteuerten hydraulischen Drucks die in Betätigungsrichtung auf den Hauptbremszylinderkolben 15 wirkende Verstärkungskraft erzeugt wird. Ein Sensor 41 zur indirekten Erfassung der Verstärkungskraft ist dabei als Drucksensor aus¬ gebildet. Außerdem ist zwischen dem Druckmittelvorratsbehälter 3 und einem dem Druckraum 48 der steuer-baren Druckquelle 5 zugeordneten Ringraum 52 eine über einen im Gehäuse 40 ausgebildeten weiteren Ringraum 61 führende hydraulische VerbindungPressure chamber 48 is applied hydraulic pressure in the direction of actuation acting on the master cylinder piston 15 boosting force is generated. A sensor 41 for indirect detection of the boosting force is formed as a pressure sensor ¬ . In addition, between the pressure medium reservoir 3 and the pressure chamber 48 of the controllable pressure source 5 associated annular space 52 via a formed in the housing 40 further annular space 61 leading hydraulic connection
50 vorgesehen. Ein weiterer, an die Verbindung 50 angeschlossener Leitungsabschnitt 53, in dem ein stromlos offenes (SO-) 2/2-Wegeventil 54 eingefügt ist, ermöglicht bei einer Vergrö¬ ßerung der Verstärkerkammer 51 bzw. des Druckraums 48 ein Nachsaugen von Druckmittel aus dem Druckmittelvorratsbehälter 3. 50 provided. A further, to the connection portion 50 connected cable 53, in which a normally open (NO) is inserted 2/2-way valve 54 permits at a magnification ¬ fication the boost chamber 51 or the pressure chamber 48, a After sucking off pressure medium from the pressure fluid reservoir 3.
Der Zeichnung kann außerdem entnommen werden, dass das vorhin erwähnte Motor-Pumpenaggregat 4 eine zweikreisige hydraulische Pumpe umfasst, deren Stufen 25a, 25b, unter Zwischenschaltung je eines Rückschlagventils 55a, 55b, an die zu den Einlassven¬ tilen 6a - 6d führenden Systemdruckleitungen 22a, 22b angeschlossen sind. Die Pumpen 25a, 25b sind beispielsweise als Dreikolben-Pumpen ausgeführt, wobei die insgesamt 6 Kolben von einem gemeinsamen auf der Motorwelle angebrachten Exzenter betätigt werden. Um die von den Pumpen 25a, 25b abgegebenen Druckmittelvolumenströme zu kontrollieren sind zwischen der Druck- und der Saugseite der Pumpenstufen 25a, 25b analog re¬ gelbare, stromlos offene (SO-) 2/2-Wegeventile 26, 27 vorgese¬ hen, wobei die Saugseiten über die bereits erwähnten Rücklauf¬ leitungen 23a, 23b mit dem Druckmittelvorratsbehälter 3 verbunden sind. Außerdem sind in den Rücklaufleitungen 23a, 23b weitere analog regelbare, stromlos offene (SO-) 2/2- Wegeventile 36, 37 vorgesehen, die einen fein dosierbaren Abbau des in den Radbremsen 8, 9, 10, 11 eingesteuerten Bremsdruckes ermöglichen. The drawing can be seen also that the previously mentioned motor-pump unit 4 includes a dual-circuit hydraulic pump, the stages 25a, 25b, with the interposition of a respective non-return valve 55a, 55b to which the Einlassven ¬ tilen 6a - leading 6d system pressure lines 22a, 22b are connected. The pumps 25a, 25b are designed, for example, as three-piston pumps, wherein the total of six pistons are actuated by a common eccentric mounted on the motor shaft. In order from the pumps 25a, 25b discharged printing fluid volume flows must be checked between the pressure and suction sides of the pump stages 25a, 25b analog re ¬ gelable, normally open (NO) 2/2-way valves 26, 27 vorgese ¬ hen, said Suction sides via the already mentioned return ¬ lines 23 a, 23 b are connected to the pressure medium reservoir 3. In addition, in the return lines 23a, 23b further analog controllable, normally open (SO) 2/2-way valves 36, 37 are provided which allow a finely adjustable reduction in the wheel brakes 8, 9, 10, 11 controlled brake pressure.
Das weitere Betriebsbremssystem arbeitet demnach mit einem pumpenbasierten Druckverstärker, wobei die über die Ventile 26, 27 kontrollierten Pumpendrücke über die Rückschlagventile 55a, 55b und die hydraulischen Verbindungen 22a, 22b sowohl auf die Kammern 16, 17 des Hauptbremszylinders 2 als auch die Einlassventile 6a-6d aufgeschaltet sind. Accordingly, the further service brake system operates with a pump-based pressure booster, the pump pressures controlled by the valves 26, 27 via the check valves 55a, 55b and the hydraulic connections 22a, 22b to both the chambers 16, 17 of the master cylinder 2 and the intake valves 6a-6d are switched on.
Schließlich ist aus der Zeichnung ersichtlich, dass den beiden elektronischen Steuer- und Regeleinheiten 12, 13 je eine separate Energieversorgung 44, 45 zugeordnet ist. Dabei werden der ersten elektronischen Steuer- und Regeleinheit 12 als Ein- gangsgrößen die Ausgangssignale der ersten Wegerfassungs¬ einrichtung 42, der Radsensoren 28, 29, 30, 31 sowie der Finally, it can be seen from the drawing that the two electronic control units 12, 13 are each assigned a separate power supply 44, 45. In this case, the first electronic control and regulation unit 12 as a single gangsgrößen the output signals of the first path detection ¬ device 42, the wheel sensors 28, 29, 30, 31 and the
Drucksensoren 32, 33 zugeführt, wobei deren Ausgangssignale der Ansteuerung des Motor-Pumpenaggregats 4, der elektromagne¬ tisch betätigten Ventile 26, 27 zur Kontrolle der Pumpen- volumenströme sowie der den Bremsdruck beeinflussenden Ein- lass- (6a - 6d) , Auslassventile 7a - 7d, der analog regelbaren 2/2-Wegeventile 36 und 37 und der vorhin erwähnten Ventile 38, 39 dienen. Die Ansteuerung erfolgt entsprechend einer vordefi¬ nierten Kennlinie, die die von der ersten Wegerfassungseinrichtung 42 erfassten, den Fahrerwunsch repräsentierenden Wegwerte in einen Soll-Bremssystemdruckwert umrechnet. Dagegen werden der zweiten elektronischen Steuer- und Regeleinheit 13 als Eingangsgrößen die Ausgangssignale der zweiten Wegerfas¬ sungseinrichtung 43, des Drucksensors 41 sowie des Rotorlagensensors 49 zugeführt, wobei deren Ausgangssignale der Ansteue¬ rung des Elektromotors 46 der steuerbaren Druckquelle 5 und des elektromagnetisch betätigten Ventils 54 dienen. Ein Austausch von Informationen über den Betriebszustand der Steuer- und Regeleinheiten 12, 13 sowie der ihnen zugeordneten Komponenten 5, 28, 29, 30, 31, 32, 33, 38, 39, 41, 42, 43, 46, 54 wird durch eine Datenkommunikationsverbindung ermöglicht, die mit dem Bezugszeichen 57 versehen ist. Pressure sensors 32, 33 supplied, wherein the output signals of the control of the motor-pump unit 4, the electromagnetically ¬ actuated valves 26, 27 for controlling the pump flow rates and the brake pressure influencing inlet (6a - 6d), exhaust valves 7a - 7d, the analog controllable 2/2-way valves 36 and 37 and the aforementioned valves 38, 39 are used. The unit is controlled according to a predefi ¬ ned characteristic, which converts the displacement values detected by the first position detection means 42, the driver's request representing into a target brake system pressure value. In contrast, the output signals of the second Wegerfas ¬ sungseinrichtung 43, the pressure sensor 41 and the rotor position sensor 49 are supplied to the second electronic control and regulation unit 13, wherein the output signals of the Ansteue ¬ tion of the electric motor 46 of the controllable pressure source 5 and the solenoid-operated valve 54th serve. An exchange of information about the operating state of the control and regulating units 12, 13 and their associated components 5, 28, 29, 30, 31, 32, 33, 38, 39, 41, 42, 43, 46, 54 is characterized by a Data communication connection provided with the reference numeral 57 allows.
Der Aufbau der in Fig. 2 dargestellten zweiten Aus führungs form entspricht weitgehend dem der in Fig. 1 gezeigten Ausführung. Die im Zusammenhang mit Fig. 1 erläuterte Einrichtung für einen begrenzten Druckausgleich zwischen den beiden Bremssystemdrücken, die in Fig. 2 mit dem Bezugszeichen 21 versehen ist, besteht jedoch aus einem im Hauptzylinderkolben 15 geführten Druckausgleichskolben 66, an dem sich einerseits die erste Rückstellfeder 18 und andererseits eine weitere Druckfeder 62 abstützt, die in einer im Hauptbremszylinderkolben 15 vom Druckausgleichskolben 66 begrenzten Druckkammer 63 angeordnet ist. Um ein Beaufschlagen des Druckausgleichskolbens 66 mit dem im ersten Hauptzylinder-Druckraum 16 herrschenden Systembremsdruck zu ermöglichen sind im Hauptbremszylinderkolben 15 Druckmittelkanäle 64, 65 ausgebildet, die einerseits (64) im ersten Druckraum 16 und andererseits in der Druckkammer 63 münden . The structure of the illustrated in Fig. 2 second imple mentation form largely corresponds to that shown in Fig. 1 embodiment. The explained in connection with FIG. 1 device for a limited pressure equalization between the two brake system pressures, which is provided in Fig. 2 by reference numeral 21, but consists of a guided in the master cylinder piston 15 pressure compensation piston 66, on which on the one hand, the first return spring 18 and on the other hand, a further compression spring 62 is supported, which arranged in a limited in the master brake cylinder piston 15 from the pressure compensation piston 66 pressure chamber 63 is. In order to allow the pressure compensation piston 66 to be pressurized with the system brake pressure prevailing in the first master cylinder pressure chamber 16, pressure medium passages 64, 65 are formed in the master brake cylinder piston 15, which open on the one hand (64) in the first pressure chamber 16 and on the other hand in the pressure chamber 63.
Die Funktionsweise der erfindungsgemäßen Bremsanlage ergibt sich für den auf dem einschlägigen technischen Gebiet tätigen Fachmann aus dem Offenbarungsgehalt der vorliegenden Patentanmeldung und braucht deswegen nicht näher erläutert zu werden. The operation of the brake system according to the invention results for the active in the relevant technical field skilled in the art from the disclosure of the present patent application and therefore need not be explained in detail.
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010042300 | 2010-10-12 | ||
| DE102010042300.9 | 2010-10-12 | ||
| DE201110084206 DE102011084206A1 (en) | 2010-10-12 | 2011-10-10 | Brake system for motor vehicles |
| DE102011084206.3 | 2011-10-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012049134A1 true WO2012049134A1 (en) | 2012-04-19 |
Family
ID=44800027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/067669 Ceased WO2012049134A1 (en) | 2010-10-12 | 2011-10-11 | Brake system for motor vehicles |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102011084206A1 (en) |
| WO (1) | WO2012049134A1 (en) |
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| WO2015173134A1 (en) * | 2014-05-15 | 2015-11-19 | Continental Teves Ag & Co. Ohg | Brake system for motor vehicles |
| CN104742882B (en) * | 2013-12-27 | 2017-08-25 | 株式会社万都 | Brakes with anti-drag function and the method for controlling the brakes |
| US20170274884A1 (en) * | 2014-12-16 | 2017-09-28 | Continental Teves Ag & Co. Ohg | Brake system and brake control device |
| CN110015286A (en) * | 2017-12-21 | 2019-07-16 | 罗伯特·博世有限公司 | It is amplifying with electromechanical braking power, can electronic slip adjust motor vehicle braking system in enhance brake force method |
| CN113423622A (en) * | 2018-12-20 | 2021-09-21 | 爱皮加特股份公司 | Redundant brake system with two pressure supply units for electric vehicles and vehicles with 3-order (HAD) to 5-order (AD) autonomous driving |
| CN113439046A (en) * | 2018-12-20 | 2021-09-24 | 爱皮加特股份公司 | Redundant braking system with pressure supply for electric vehicles and vehicles with 3-stage (HAD) to 4-stage (FAD) autonomous driving |
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| DE102012222897A1 (en) | 2012-02-28 | 2013-08-29 | Continental Teves Ag & Co. Ohg | Method for operating a brake system |
| JP5960461B2 (en) * | 2012-03-21 | 2016-08-02 | トヨタ自動車株式会社 | Brake device |
| JP5831427B2 (en) * | 2012-11-08 | 2015-12-09 | トヨタ自動車株式会社 | Master cylinder device |
| KR101459446B1 (en) | 2013-04-01 | 2014-11-07 | 현대자동차 주식회사 | Brake control system for vehicle |
| DE102014207549A1 (en) * | 2014-04-22 | 2015-10-22 | Robert Bosch Gmbh | Pump housing arrangement of a hydraulic unit of a vehicle brake system |
| DE102015208148A1 (en) | 2014-06-30 | 2015-12-31 | Continental Teves Ag & Co. Ohg | Brake system for a motor vehicle |
| DE102014212537A1 (en) * | 2014-06-30 | 2015-12-31 | Continental Teves Ag & Co. Ohg | Brake system for a motor vehicle |
| DE102017222445A1 (en) * | 2017-01-11 | 2018-07-12 | Continental Teves Ag & Co. Ohg | Brake system for a motor vehicle and method for operating a brake system |
| DE102017221057A1 (en) | 2017-11-24 | 2019-05-29 | Continental Teves Ag & Co. Ohg | Brake system with hydraulically driven master cylinder |
| DE102018133223A1 (en) * | 2018-12-20 | 2020-06-25 | Ipgate Ag | Vehicle axle with electric drive motors and electro-hydraulic brakes and other modules such as gears, torque vectoring and parking brakes |
| DE102019206668A1 (en) * | 2019-05-09 | 2020-11-12 | Robert Bosch Gmbh | Braking system for a vehicle and method for braking a vehicle |
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| DE102011084206A1 (en) | 2012-04-12 |
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