WO1997010980A1 - Systeme de freinage hydraulique a actionnement exterieur - Google Patents

Systeme de freinage hydraulique a actionnement exterieur Download PDF

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Publication number
WO1997010980A1
WO1997010980A1 PCT/EP1995/003737 EP9503737W WO9710980A1 WO 1997010980 A1 WO1997010980 A1 WO 1997010980A1 EP 9503737 W EP9503737 W EP 9503737W WO 9710980 A1 WO9710980 A1 WO 9710980A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
brake
valve
pump
pressure accumulator
Prior art date
Application number
PCT/EP1995/003737
Other languages
German (de)
English (en)
Inventor
Catalin Bungetzianu
Stefan Drumm
Original Assignee
Itt Automotive Europe 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
Priority to DE4431474A priority Critical patent/DE4431474A1/de
Application filed by Itt Automotive Europe Gmbh filed Critical Itt Automotive Europe Gmbh
Priority to PCT/EP1995/003737 priority patent/WO1997010980A1/fr
Publication of WO1997010980A1 publication Critical patent/WO1997010980A1/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/50Arrangements 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 having means for controlling the rate at which pressure is reapplied to or released from the brake
    • B60T8/5087Pressure release using restrictions
    • B60T8/5093Pressure release using restrictions in hydraulic brake systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/26Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • B60T8/266Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/26Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • B60T8/266Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means
    • B60T8/268Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means using the valves of an ABS, ASR or ESP system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/40Arrangements 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
    • B60T8/4072Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/42Arrangements 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 having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4275Pump-back systems
    • B60T8/4291Pump-back systems having means to reduce or eliminate pedal kick-back
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/48Arrangements 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 connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B60T8/4827Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
    • B60T8/4863Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
    • B60T8/4872Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/48Arrangements 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 connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B60T8/4827Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
    • B60T8/4863Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
    • B60T8/4872Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems
    • B60T8/4881Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems having priming means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/50Arrangements 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 having means for controlling the rate at which pressure is reapplied to or released from the brake
    • B60T8/5018Pressure reapplication using restrictions
    • B60T8/5025Pressure reapplication using restrictions in hydraulic brake systems
    • B60T8/5037Pressure reapplication using restrictions in hydraulic brake systems closed systems

Definitions

  • the present invention is based on a brake system according to the top aspect of claim 1.
  • Such a brake system is known from US Pat. No. 4,977,238. It has the advantage that there is only a single solenoid valve in the brake line from the master cylinder to the wheel brake, in the pressure line from the external pressure source to the wheel brake and in the discharge line from the wheel brake to the volume sensor, so that no throttle effects due to series connection Solenoid valves occur.
  • hydraulic diaphragms can be inserted into the pressure and relief line without hindering pedal braking.
  • each individual wheel brake is independent of the second wheel brake arranged in the brake circuit can be acted upon by brake pressure as a function of the pedal travel or directly from the external pressure source.
  • the object of the present invention is to further improve a brake system of the type described in the introduction. This object is achieved in connection with the characterizing features of claim 1.
  • the principle of the invention therefore consists in converting the known open system of a generic brake system into a closed system.
  • a hydraulically operated pressure relief valve according to claim 4 also saves a solenoid valve and the associated electronic control.
  • FIG. 1 shows a first embodiment of a brake system according to the invention with a pressure-controlled intake valve
  • Fig. 3 shows an embodiment with a rinse ⁇ and pressure pump and Fig. 4 shows an embodiment with a special design of the high pressure accumulator.
  • a master cylinder 1 is connected to a pressure medium container 2 and can be actuated via a brake pedal 3.
  • Two brake circuits I and II emanate from it, only brake circuit II being shown and described.
  • Brake circuit I is identical to II.
  • the brake line 4 extends from the master cylinder 1 and is divided into the brake branches 5 and 6, each of which leads to one of the wheel brakes 8 and 24.
  • the wheel brakes 8 and 24 are completely equivalent in terms of their connections, so that only the connections of the wheel brake 8 are discussed in more detail here.
  • the brake branch 5 has the isolating valve 7, which is designed as an electromagnetically actuated, normally open 2/2-way valve.
  • the wheel brake 8 is connected to a high-pressure accumulator 13 via a pressure branch 10, which has a pressure valve 12, and via a pressure line 9.
  • a pressure branch 11 constructed analogously to the pressure branch 10 is assigned to the wheel brake 24.
  • the high-pressure accumulator 13 is connected to the pressure side of a pump 14, which can fill it via the check valve 15.
  • the suction side of the pump 14 is connected to a low pressure accumulator 16.
  • This can be connected to the wheel brakes 8 and 24 via a relief line 17, which is divided into two relief branches 18 and 19.
  • the relief branch 18 assigned to the wheel brake 8 carries an outlet valve 20 for this purpose.
  • the relief branch 19 is constructed identically to the relief branch 18.
  • the relief valve 20 and the pressure valve 12 are each formed by electromagnetically actuated, normally closed 2/2-way valves.
  • the task is to achieve an uninterrupted supply of pressure medium to the suction side of the pump which is unaffected by possible driver braking.
  • this object is achieved in that an intake line 21, which carries an intake valve 22 and 25, is placed between the low-pressure accumulator 16, that is to say the suction side of the pump 14 and the brake line 4.
  • the suction valve 22 according to FIG. 1 is a hydraulically actuated valve which interrupts the suction line 21 as long as there is pressure medium in the low-pressure accumulator 16 and releases this suction line as soon as the volume in the low-pressure accumulator 16 approaches zero, that is, so soon there is a negative pressure on the side of the intake valve 28 facing the low-pressure accumulator 16.
  • the pressure in the connection of the intake valve 22 connected to the brake line 4 has no influence on its switching position.
  • the pressure in the high-pressure accumulator 13 is limited to the opening pressure of the pressure relief valve 23. If this pressure is reached in the high-pressure accumulator, the pump 14 only delivers into the suction line 21.
  • unimpeded intake is achieved in that the intake valve 25 is not actuated by pressure, but rather is connected in a suitable manner to the position of the low-pressure accumulator piston with the brake system otherwise unchanged.
  • the intake valve 25 is opened. Pressure medium can be drawn in from the unpressurized master cylinder 1 or flows in from the pressurized master cylinder 1 until the suction valve 25 closes again by moving the low-pressure piston.
  • FIG. 3 An alternative solution to the use of an intake valve for the uninterrupted supply of pressure medium is shown in FIG. 3.
  • a further pressure pump 26 is used in order to ensure the uninterrupted reloading of the high-pressure accumulator.
  • the return pump 14 empties the low-pressure accumulator 16 as soon as there is pressure medium in it.
  • the outputs of the two pumps 14 and 26 are connected together. As soon as the low-pressure accumulator 16 is empty, the return pump 14 can no longer deliver pressure medium and the high-pressure accumulator 16 is recharged by the pressure pump 26 alone.
  • the intake valve may frequently switch over with simultaneous external and driver braking, which is reflected in undesired pedal movements. This would have to be taken into account in the design of the intake valve (use of a continuous directional valve, stability studies). This problem does not exist in the pump solution.
  • the pump solution In the design of the pumps 14 and 26, these can be optimized separately. For example, the return pump 14 must be able to deliver against any master cylinder pressure that occurs, while the pressure pump 26 must at most achieve the switching pressure of the pressure relief valve 23.
  • the accumulator pressure built up in the high-pressure accumulator 13 by the pumps 14 and 26 is again limited to the opening pressure of the pressure relief valve. If the desired pressure in the high-pressure accumulator 13 is reached, the pressure relief valve 13 is opened hydraulically by the pressure in the high-pressure accumulator 13, so that the return pump 14 conveys the pressure medium from the low-pressure accumulator 16 back to the master cylinder 1 and the pressure pump 26 only in the circuit without counterpressure promotes.
  • FIG. 4 A special design of the high-pressure accumulator is shown in FIG. 4, all the other components being the same as in FIG.
  • a high-pressure accumulator 27 is shown, which is designed so that it has a second hydraulic connection 28 connected to the master cylinder 1, from which as much pressure medium is displaced as flows into its pressure connection 29. This prevents the pedal movements which otherwise occur when the state of charge changes.
  • the volume design of the master cylinder 1 which is customary for anti-lock brake systems can be retained. Otherwise, for safety reasons, the fault of a high-pressure accumulator which has been emptied and only filled by the driver's braking would have to be taken into account by a larger master cylinder volume.
  • an orifice is arranged in each of the pressure valve 12 and the outlet valve 20, which limits the speed of the pressure build-up or pressure drop. Then a rapid pedal-operated braking can still be initiated via the isolating valve 7, which has no such aperture.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

Pour un système de freinage hydraulique à actionnement extérieur dans lequel chaque frein sur roue (8) est connecté en parallèle à une soupape de séparation (7), une soupape de pression (12) et une soupape de sortie (20) conduisant vers un maître-cylindre (1), une source de pression extérieure constituée d'une pompe (14) et d'un accumulateur haute pression (13), ou vers un réservoir (16), l'invention propose un système de freinage conçu sous la forme d'un système fermé. Pour ce faire, on choisit comme réservoir un accumulateur basse pression et on utilise des moyens hydrauliques qui permettent l'alimentation ininterrompue en agent de pression côté aspiration de la pompe (14) même si l'accumulateur basse pression (16) est vide.
PCT/EP1995/003737 1994-09-03 1995-09-22 Systeme de freinage hydraulique a actionnement exterieur WO1997010980A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4431474A DE4431474A1 (de) 1994-09-03 1994-09-03 Hydraulische Bremsanlage mit Fremdbetätigung
PCT/EP1995/003737 WO1997010980A1 (fr) 1994-09-03 1995-09-22 Systeme de freinage hydraulique a actionnement exterieur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4431474A DE4431474A1 (de) 1994-09-03 1994-09-03 Hydraulische Bremsanlage mit Fremdbetätigung
PCT/EP1995/003737 WO1997010980A1 (fr) 1994-09-03 1995-09-22 Systeme de freinage hydraulique a actionnement exterieur

Publications (1)

Publication Number Publication Date
WO1997010980A1 true WO1997010980A1 (fr) 1997-03-27

Family

ID=25939812

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003737 WO1997010980A1 (fr) 1994-09-03 1995-09-22 Systeme de freinage hydraulique a actionnement exterieur

Country Status (2)

Country Link
DE (1) DE4431474A1 (fr)
WO (1) WO1997010980A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890492A3 (fr) * 1997-07-08 1999-06-16 Toyota Jidosha Kabushiki Kaisha Dispositif de commande de force de freinage assurant à la fois une fonction de freinage à anti-blocage (ABS) et une fonction d'assistance de freinage d'urgence (BA)
DE10063277A1 (de) * 2000-12-19 2002-06-20 Continental Teves Ag & Co Ohg Ventileinrichtung für eine hydraulische Anlage
EP1106462A3 (fr) * 1999-12-07 2003-08-27 Sumitomo (Sei) Brake Systems, Inc. Dispositif de contrôle de la pression du fluide de freinage
WO2004012970A1 (fr) * 2002-07-27 2004-02-12 Daimlerchrysler Ag Dispositif de commande de pression de freinage
KR100572496B1 (ko) * 1997-01-15 2007-12-07 로베르트 보쉬 게엠베하 유압차량제동장치

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Publication number Priority date Publication date Assignee Title
DE19626289B4 (de) * 1996-07-01 2008-08-14 Continental Teves Ag & Co. Ohg Hydraulische Bremsanlage mit einer Rückförderpumpe
DE19644883B4 (de) * 1996-10-29 2009-09-24 Robert Bosch Gmbh Hydraulische Fahrzeugbremsanlage mit einer Schlupfregeleinrichtung und/oder einer Fahrdynamikregeleinrichtung
WO1999008916A1 (fr) * 1997-08-18 1999-02-25 Kelsey-Hayes Company Agencement d'un systeme de freinage de vehicule destine a empecher des couplages parasites de pression pendant une manoeuvre de regulation de la stabilite du vehicule
DE19963760B4 (de) * 1999-12-30 2008-09-04 Robert Bosch Gmbh Hydraulische Fahrzeugbremsanlage
DE102012023319A1 (de) * 2012-11-29 2014-06-05 Lucas Automotive Gmbh Bremssystem für ein Landfahrzeug und Verfahren zum Steuern des Bremssystems

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