WO1992004213A1 - Dispositif de retenue d'un vehicule sur une piste inclinee de roulement - Google Patents

Dispositif de retenue d'un vehicule sur une piste inclinee de roulement Download PDF

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Publication number
WO1992004213A1
WO1992004213A1 PCT/EP1991/001492 EP9101492W WO9204213A1 WO 1992004213 A1 WO1992004213 A1 WO 1992004213A1 EP 9101492 W EP9101492 W EP 9101492W WO 9204213 A1 WO9204213 A1 WO 9204213A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
holding
valves
pressure
valve
Prior art date
Application number
PCT/EP1991/001492
Other languages
German (de)
English (en)
Inventor
Lutz Weise
Hans Wupper
Hans-Wilhelm Bleckmann
Original Assignee
Alfred Teves Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred Teves Gmbh filed Critical Alfred Teves Gmbh
Publication of WO1992004213A1 publication Critical patent/WO1992004213A1/fr

Links

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
    • B60T8/44—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
    • 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
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/122—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger for locking of reverse movement
    • 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
    • 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
    • B60T8/42—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 having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4275—Pump-back systems
    • 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
    • B60T8/48—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 connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
    • B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems

Definitions

  • the invention relates to an arrangement for holding a vehicle on an inclined road, in particular as a starting aid on the mountain, for motor vehicles with an anti-lock braking system, in which the wheel brakes are connected to a brake pressure sensor via inlet-outlet valve pairs, and in which A hydraulic pump supplies auxiliary pressure during an anti-lock control.
  • a stopping aid when starting on a mountain is already known, which is designed as an addition to a brake system with electronic anti-lock control and which already requires components for the anti-lock braking system, such as multi-way valves, wheel sensors and electronic circuits Keep the vehicle on the mountain.
  • a spring-loaded check valve is inserted in the pressure medium path leading to the wheel brakes, which initially maintains a residual pressure when the brake is released, which is just sufficient to hold the vehicle on the mountain. enough.
  • This check valve is connected in parallel with a normally blocked valve which is actuated when the accelerator pedal is actuated, thereby switching to passage and leading to a complete reduction in pressure in the brake.
  • the invention is based on the object of developing a holding aid for a vehicle with an electronic ABS which can be implemented with little additional effort, which does not impair the functional reliability of the brakes and which satisfies the different requirements which occur in practice.
  • a starting aid is thus created with minimal additional effort.
  • a holding valve with a parallel pressure relief valve is inserted into the pressure medium line leading from the brake pressure sensor to one or more wheel brakes.
  • this holding valve is switched to passage, so that the pressure medium path to the wheel brake remains open in the event of a failure of the electrical power supply, a cable break or the like, so that the brake function is not restricted.
  • the brake pressure curve in the wheel brakes during the starting process is very precise to the respective requirements, e.g. the slope, driver behavior, etc., can be adjusted.
  • the arrangement is provided for a vehicle with anti-lock and traction control by brake intervention, with the traction control, namely for blocking the pressure medium path from the wheel brake of a driven wheel to the brake pressure transmitter, and the same multi-way valve can be used to hold the vehicle on the mountain.
  • the additional effort is limited to a corresponding design or addition of the electronics.
  • the holding valves are arranged in the pressure medium paths in such a way that after the switching of these holding valves the pressure medium return flow from the wheel brakes of all wheels into the brake pressure transmitter is blocked. Activation of the auxiliary pressure source to hold the vehicle is not necessary in this case, even with a steep incline.
  • an advantageous embodiment of the invention is that in a brake system with two hydraulically separate brake circuits, to which the wheel brakes of two vehicle wheels are connected - diagonally or axially - the pressure medium return from the wheel brakes via the outlet valves to the Suction sides of the hydraulic pump and to the inlet valves are each designed as a closed system.
  • a holding valve is arranged in each brake circuit in such a way that after switching the holding valves by opening an outlet valve and switching on * the hydraulic pump, the brake pressure in the wheel brakes, the pressure medium path to the brake pressure transmitter blocked by the holding valve, increases. In this way, a starting aid can be implemented very easily even in vehicles with closed systems.
  • the holding valves can be controlled as a function of signals which represent the shift position of the vehicle clutch, the shift position of the transmission, the wheel speeds or the like.
  • the starting aid can be adapted very precisely to the respective circumstances by logically linking the individual signals.
  • the brake system essentially consists of a brake pressure sensor 1, which in turn is composed of a tandem master cylinder 2 and a vacuum booster unit 3, a valve block 4, an auxiliary pressure source 5 and holding valves 6 and 7.
  • the auxiliary pressure source 5 comprises an electric motor-driven hydraulic pump 8 with two hydraulically separated circuits 9, 10.
  • At the master cylinder 2 is also a surge tank
  • valve block 8 In the valve block 8 are the intake and exhaust valves
  • a brake pressure transmitter with diagonal brake circuit division is provided here.
  • the left front wheel VL and the right rear wheel HR are connected to the brake circuit I, and the two other wheels VR, HL are connected to the brake circuit II.
  • a pressure limiting valve 20, 21 is connected in parallel to the two holding valves 6, 7, which responds as soon as the pressure difference between the auxiliary pressure and the pressure in the master cylinder exceeds a predetermined limit value, which is above the maximum required for holding the vehicle There is pressure.
  • the inlet and outlet valves 12 - 19 and the holding valves 6, 7 are designed as electromagnetically operable multi-way valves, namely 2/2-way valves.
  • the electronics for controlling these valves and for switching the motor M of the hydraulic pump 8 on and off, as well as the sensors, in particular wheel sensors, which supply the required information in the form of electrical signals for controlling the brake system, are for the sake of clarity not shown.
  • the arrangement according to FIG. 1 works as follows:
  • valves 6, 7 and 12 - 19 are in the rest position shown.
  • the valves in the valve block 4 and the hydraulic pump 8 are controlled in a known manner. This does not require any further explanation here.
  • the starting aid according to the invention comes into operation each time the brake is released or only when certain conditions are met.
  • the traction help is required if, for example, a certain lane inclination is determined, if the vehicle rolls back or rolls, even though the clutch is released or the transmission interrupts the drive train.
  • the holding valves 6, 7 are switched over, and thereby the discharge of pressure medium from the wheel brakes of the wheels VL, HR, VR, HL, which are connected to the master cylinder 2 via the holding valves 6, 7, initially is prevented. If necessary, could now by switching on the hydraulic pump 8, the brake pressure in the wheel brakes can be increased to ensure that the vehicle is kept on the mountain in any situation.
  • the brake pressure is reduced in a certain manner and at a certain speed by correspondingly actuating and switching back the holding valves 6, 7 that a "comfortable" starting process occurs.
  • ASR valves 22, 23, namely 2/2-way valves required for traction control, are simultaneously used as holding valves of the starting aid according to the invention.
  • Pressure limiting valves 24, 25 connected in parallel must be designed such that they only respond when the maximum brake pressure required for traction control is exceeded.
  • the reduction of the brake pressure can only be achieved in the two wheels VL, VR prevented when releasing the brake.
  • the ASR valves 22, 23, which also serve as holding valves here, are namely as is known, inserted into the brake lines in such a way that only the brake lines of the driven wheels, here the front wheels VL, VR, are separated from the master cylinder and can be pressurized during a traction control system.
  • the wheel brakes of the driven wheels, here the rear wheels HR, HL, on the other hand, must remain depressurized in the ASR phase.
  • the brake pressure on the front wheels VL, VR can be increased in the exemplary embodiment according to FIG. 2 by switching on the hydraulic pump 8. In this way it is ensured that after releasing the brake and activating the holding aid, sufficient braking pressure is initially available to hold the vehicle. By activating or switching back the ASR and holding valves 22, 23, practically any desired brake pressure curve can be brought about when the starting aid is released.
  • the wheels VL, HR; VR, HL are diagonally assigned to the two brake circuits I ', II' of the master cylinder 2.
  • the pressure medium derived via the outlet valves 16 ', 17', 18 ', 19' for lowering the brake pressure is not, however, in the pressure medium expansion tank 11 ', but returned directly to an auxiliary pressure source 26 and to the suction sides of a two-circuit hydraulic pump 27.
  • two holding valves 28, 29, which in turn have pressure-limiting valves 30, 31 in parallel, in each of the two pressure circuits leading from one of the two brake circuits I ', II' to one wheel, here to the front wheels, VL, VR tel admire inserted.
  • the holding valves 28, 29 are arranged in the two pressure medium systems in such a way that after the valves respond, which leads to the switch into the blocking position, pressure medium flows out of the associated wheel VL or VR, as in the preceding examples and that also by switching on the auxiliary pressure source 26 and opening the exhaust valves 17 ', 19', the pressure in the wheel brakes of the wheels VL, VR, which are braked to hold the vehicle, can be increased.
  • the arrangement according to the invention can therefore also be used without restriction for anti-lock brake systems with closed hydraulic systems.
  • the holding valves 28 and 29 could of course also be connected directly to the master cylinder 2, so that the brake pressure in all wheel brakes would be kept constant in the blocking position of the holding valves.

Landscapes

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

Abstract

Un dispositif de retenue d'un véhicule pour la conduite en montagne, notamment pour véhicules à moteur pourvus d'un système antiblocage automatique électronique, comprend des soupapes à plusieurs voies (6, 7, 22, 23, 28, 29) à commande électrique, qui dans leur position de repos laissent libre passage, qui peuvent être commutées dans une position de blocage, et qui sont agencées dans au moins une conduite de fluide sous pression allant d'un générateur (1) de pression de freinage jusqu'aux soupapes d'admission (12, 13, 14, 15). Les limiteurs de pression (20, 21, 24, 25, 30, 31) de ces soupapes à voies multiples sont parallèles et servent de soupapes de retenue. Les circuits électroniques de commutation (non montrés) commandent les soupapes de retenue (6, 7, 22, 23, 28, 29) en fonction de commandes ou de signaux de retenue, dans la position de libération du générateur (1) de pression de freinage, et/ou déclenchent la pompe hydraulique (8, 27) d'une source de pression auxiliaire (5, 26).
PCT/EP1991/001492 1990-09-01 1991-08-07 Dispositif de retenue d'un vehicule sur une piste inclinee de roulement WO1992004213A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904027793 DE4027793A1 (de) 1990-09-01 1990-09-01 Anordnung zum halten eines fahrzeugs auf einer geneigten fahrbahn
DEP4027793.3 1990-09-01

Publications (1)

Publication Number Publication Date
WO1992004213A1 true WO1992004213A1 (fr) 1992-03-19

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ID=6413427

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/001492 WO1992004213A1 (fr) 1990-09-01 1991-08-07 Dispositif de retenue d'un vehicule sur une piste inclinee de roulement

Country Status (2)

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DE (1) DE4027793A1 (fr)
WO (1) WO1992004213A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584813A2 (fr) * 1992-08-25 1994-03-02 Sumitomo Electric Industries, Limited Dispositif hydraulique de régulation de freinage anti-blocage
EP0816195A2 (fr) * 1996-06-28 1998-01-07 Daimler-Benz Aktiengesellschaft Méthode pour la mise en oeuvre d'un système de freinage, notamment un système de freinage assisté des véhicules commerciaux
DE19950162B4 (de) * 1999-10-19 2004-01-29 Daimlerchrysler Ag Verfahren zur Verhinderung des Wegrollens eines Fahrzeugs beim Anfahren
DE102007036578B4 (de) 2006-08-10 2023-05-25 Continental Automotive Technologies GmbH Verfahren und Vorrichtung zur robusteren Rutscherkennung von Fahrzeugen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630870A1 (de) * 1996-07-31 1998-02-05 Bayerische Motoren Werke Ag Verfahren zum Anfahren eines Fahrzeugs
DE19848209A1 (de) * 1998-10-20 2000-04-27 Volkswagen Ag Verfahren und Vorrichtung zum Halten eines Kraftfahrzeugs unter einer darauf wirkenden Kraft
JP3561897B2 (ja) * 2000-06-13 2004-09-02 本田技研工業株式会社 車両用ブレーキ装置
KR20060132379A (ko) * 2005-06-18 2006-12-21 주식회사 만도 안티록 브레이크 시스템

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3439067A1 (de) * 1984-10-25 1986-05-07 Alfred Teves Gmbh, 6000 Frankfurt Anordnung zum feststellen einer druckmittelbetaetigten radbremse
US4703979A (en) * 1984-08-14 1987-11-03 Toyota Jidosha Kabushiki Kaisha Anti-skid pressure control device in hydraulic braking system
GB2192960A (en) * 1986-07-22 1988-01-27 Teves Gmbh Alfred Brake systems of automotive vehicles including electronic antilocking and traction slip control
DE3802015A1 (de) * 1988-01-25 1989-07-27 Teves Gmbh Alfred System zur sicherung eines mit abs und/oder asr ausgeruesteten fahrzeugs
FR2636575A1 (fr) * 1988-09-21 1990-03-23 Bosch Gmbh Robert Dispositif de reglage antipatinage au demarrage pour un vehicule automobile equipe d'un systeme d'antiblocage
EP0391353A1 (fr) * 1989-04-03 1990-10-10 Sumitomo Electric Industries, Ltd. Dispositif de freinage

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DE2323343A1 (de) * 1973-05-09 1975-04-03 Welter Zusatz- brems- und sicherheitssystem fuer fahrzeuge mit hydraulischen und/oder pneumatischen bremsen
DE2807195A1 (de) * 1978-02-20 1979-08-23 Karl Bluemel Steuervorrichtung fuer kraftfahrzeugbremsen mit durch druckmittel betriebenem bremsverstaerker
DE3642874A1 (de) * 1986-12-16 1988-06-30 Daimler Benz Ag Einrichtung fuer eine parkbremse an einem kraftfahrzeug
DE3728709A1 (de) * 1987-08-28 1989-03-09 Bosch Gmbh Robert Automatische feststellbremse
JPS6456258A (en) * 1987-08-28 1989-03-03 Akebono Res & Dev Centre Auxiliary device for slope starting
DE3909907C2 (de) * 1989-03-25 1997-03-13 Bosch Gmbh Robert Feststellbremse für Kraftfahrzeuge

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703979A (en) * 1984-08-14 1987-11-03 Toyota Jidosha Kabushiki Kaisha Anti-skid pressure control device in hydraulic braking system
DE3439067A1 (de) * 1984-10-25 1986-05-07 Alfred Teves Gmbh, 6000 Frankfurt Anordnung zum feststellen einer druckmittelbetaetigten radbremse
GB2192960A (en) * 1986-07-22 1988-01-27 Teves Gmbh Alfred Brake systems of automotive vehicles including electronic antilocking and traction slip control
DE3802015A1 (de) * 1988-01-25 1989-07-27 Teves Gmbh Alfred System zur sicherung eines mit abs und/oder asr ausgeruesteten fahrzeugs
FR2636575A1 (fr) * 1988-09-21 1990-03-23 Bosch Gmbh Robert Dispositif de reglage antipatinage au demarrage pour un vehicule automobile equipe d'un systeme d'antiblocage
EP0391353A1 (fr) * 1989-04-03 1990-10-10 Sumitomo Electric Industries, Ltd. Dispositif de freinage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584813A2 (fr) * 1992-08-25 1994-03-02 Sumitomo Electric Industries, Limited Dispositif hydraulique de régulation de freinage anti-blocage
EP0584813A3 (en) * 1992-08-25 1996-11-06 Sumitomo Electric Industries Anti-lock hydraulic control device
EP0816195A2 (fr) * 1996-06-28 1998-01-07 Daimler-Benz Aktiengesellschaft Méthode pour la mise en oeuvre d'un système de freinage, notamment un système de freinage assisté des véhicules commerciaux
EP0816195A3 (fr) * 1996-06-28 1998-09-16 Daimler-Benz Aktiengesellschaft Méthode pour la mise en oeuvre d'un système de freinage, notamment un système de freinage assisté des véhicules commerciaux
DE19950162B4 (de) * 1999-10-19 2004-01-29 Daimlerchrysler Ag Verfahren zur Verhinderung des Wegrollens eines Fahrzeugs beim Anfahren
DE102007036578B4 (de) 2006-08-10 2023-05-25 Continental Automotive Technologies GmbH Verfahren und Vorrichtung zur robusteren Rutscherkennung von Fahrzeugen

Also Published As

Publication number Publication date
DE4027793A1 (de) 1992-03-05

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