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WO2007009869A1 - Dispositif pour developper une force de freinage dans un systeme de freinage d'un vehicule a moteur - Google Patents

Dispositif pour developper une force de freinage dans un systeme de freinage d'un vehicule a moteur Download PDF

Info

Publication number
WO2007009869A1
WO2007009869A1 PCT/EP2006/063815 EP2006063815W WO2007009869A1 WO 2007009869 A1 WO2007009869 A1 WO 2007009869A1 EP 2006063815 W EP2006063815 W EP 2006063815W WO 2007009869 A1 WO2007009869 A1 WO 2007009869A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
pressure
pump
valve
suction side
Prior art date
Application number
PCT/EP2006/063815
Other languages
German (de)
English (en)
Inventor
Andreas Baier
Ferah Cetinkaya
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2007009869A1 publication Critical patent/WO2007009869A1/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
    • B60T8/36—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 including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3655—Continuously controlled electromagnetic valves
    • 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
    • B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
    • B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems

Definitions

  • the invention relates to a device for building up braking force in a brake system of a vehicle.
  • DE 101 44 879 C1 discloses a method and a device for
  • the hydraulic brake circuit described therein comprises two reminderpumpen whose suction side is in each case via a high-pressure switching valve with the output of the master cylinder in communication.
  • the invention relates to a device for building up braking force in one
  • a brake medium reservoir and a first conduit system in which for the construction of
  • Brake pressure brake fluid is moved from the brake fluid reservoir to the suction side of a pump, - a leading from the delivery side of the pump in the wheel brake cylinder second
  • Wheel brake cylinder is moved, characterized in that the first conduit system between the brake medium reservoir and the suction side of a pump contains a pressure limiting component limiting the pressure of the brake medium to a predefinable maximum value.
  • the pressure limiting element By the pressure limiting element, it is possible to limit the pressure on the low pressure side of the pump and thus to protect the gasket located there.
  • the brake medium is brake fluid and the pressure is a hydraulic pressure
  • the brake fluid is a gas such as air and the pressure is a gas pressure or pneumatic pressure.
  • An advantageous embodiment of the invention is characterized in that it is the pressure-limiting element is a pressure control valve.
  • a pressure control valve makes it possible to limit the pressure value at the outlet of the valve by selecting or varying its activation.
  • An advantageous embodiment of the invention is characterized in that the pressure-limiting element is a pulsed controlled switching valve.
  • the pressure-limiting element is a pulsed controlled switching valve.
  • Ratio of on-off duration of the pulsed control are chosen so that no unwanted pressure pulsations are caused.
  • An advantageous embodiment of the invention is characterized in that the brake medium reservoir is the master brake cylinder.
  • An advantageous embodiment of the invention is characterized in that the brake medium is brake fluid.
  • An advantageous embodiment of the invention is characterized in that the pump is the return pump.
  • An advantageous embodiment of the invention is characterized in that it is used in the context of a vehicle dynamics control. In a driving dynamics control, the case may occur that the return pump is active by a current driver-independent braking intervention and at the same time by a strong operation of the brake pedal by the driver a high
  • Figure 1 shows the structure of the device according to the invention embedded in the hydraulic plan of a vehicle dynamics control system.
  • Fig. 1 the braking system of a vehicle equipped with a vehicle dynamics control system vehicle is shown in a schematic manner. All parts that are not important for the understanding were omitted. It was a braking system with two
  • Brake circuit 1 is the left branch in Fig. 3 (it is also referred to as a floating circle), the right branch is brake circuit 2 (it is also referred to as a rod circle).
  • brake circuit 1 extends over the rear wheels and the brake circuit 2 extends over the front wheels.
  • This division is also referred to as II division. Of course, other divisions are conceivable.
  • HSVl high-pressure switching valve of brake circuit 1
  • USVl switching valve of brake circuit 1
  • RFPl return pump of brake circuit 1
  • EVHL intake valve at the rear left, ie at the brake of the left rear wheel
  • HSV2 high pressure switching valve of brake circuit 2
  • the two reclaim pumps are driven by a common motor, i. they are put into operation in parallel.
  • the brake pressure control device 300 From the master cylinder 301 two lines go to the brake pressure control device 300. Therein, a branch to the high pressure switching valves 302 and 305 and to the switching valves 303 and 304.
  • the high pressure switching valve 302 is connected to the outlet valves 309 and 310 and the suction side of the reclaiming pump 306.
  • the switching valve 303 is connected to the intake valves 308 and 311 and the discharge side of the reclaim pump 306.
  • the output side of the intake valve 308 and the input side of the exhaust valve 309 are connected to the wheel brake 316, as are the intake valve 311 and the exhaust valve 310 with the wheel brake 317.
  • the high pressure switching valve 305 is connected to the exhaust valves 313 and 314 and the
  • the switching valve 304 is connected to the intake valves 312 and 315 and the discharge side of the return pump 307.
  • the output side of the intake valve 312 and the input side of the exhaust valve 313 are connected to the wheel brake 318, as are the intake valve 315 and the exhaust valve 314 with the wheel brake 319.
  • the reclaiming pump 306 is located between the switching valve 303 (delivery side of the return pump) and the outlet valve 310 (suction side of the return pump), the
  • the reclaim pump 307 is located between the switching valve 304 (reclaim pump delivery side) and the exhaust valve 313 (reclaim pump suction side), the exhaust valve 314 (reclaim pump suction side), and the high-pressure switching valve 305 (suction side of the reclaim pump)
  • a locking valve does not allow flow of brake fluid
  • a switched valve allows flow of brake fluid, in the ideal case even without pressure loss.
  • the reclaim pump 306 and thus also the reclaim pump 307 goes into operation. This is a prerequisite for the implementation of a driver-independent brake intervention by the vehicle dynamics control system. However, there is initially no driver-dependent brake intervention. Therefore, the ambient pressure is present in the master cylinder, i. no brake pressure or pre-pressure is established.
  • the reclaim pump 306 is connected on the suction side via the high-pressure switching valve to the master cylinder and the exhaust valves 309 and 310.
  • the exhaust valves 309 and 310 are closed to brake pressure buildup.
  • the reclaim pump now delivers over the through-connected intake valve 311 brake fluid into the wheel brake 317.
  • the brake fluid is removed on the suction side of the pump via the open high-pressure switching valve 302 the reservoir of the brake booster. There is a Bremsmomentenabsorbed on the right rear wheel instead.
  • Pressure control function with respect to the suction side of the return pump has.
  • the commonly used switching valve can be replaced by a pressure regulating valve.
  • the suction pressure of the return pump can be limited to a suitable level.
  • Such cases in which a driver-independent or active and a driver-dependent or passive pressure build-up occurs for example, occur when an ESP system is active during a braking operation or even when activating a hydraulic brake assist.

Landscapes

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

Abstract

L'invention concerne un dispositif pour développer une force de freinage dans un système de freinage d'un véhicule à moteur, ce dispositif comprenant un réservoir d'agent de freinage (301) et un premier système de conduites dans lequel, pour développer une pression de freinage, l'agent de freinage se déplace du réservoir (301) au côté aspiration d'une pompe (306). Le dispositif comporte un deuxième système de conduites allant du côté refoulement de la pompe (306) à un cylindre de frein (316, 317) et dans lequel, pour développer la pression de freinage, l'agent de freinage est amené dans le cylindre de frein (316, 317). L'invention est caractérisée en ce que le premier système de conduites comporte, entre le réservoir d'agent de freinage (301) et le côté aspiration de la pompe (306), un élément limiteur de pression (302) qui limite la pression de l'agent de freinage dans le premier système de conduites à une valeur maximale définie.
PCT/EP2006/063815 2005-07-20 2006-07-03 Dispositif pour developper une force de freinage dans un systeme de freinage d'un vehicule a moteur WO2007009869A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510033868 DE102005033868A1 (de) 2005-07-20 2005-07-20 Vorrichtung zum Aufbau von Bremskraft in einem Bremssystem eines Fahrzeugs
DE102005033868.2 2005-07-20

Publications (1)

Publication Number Publication Date
WO2007009869A1 true WO2007009869A1 (fr) 2007-01-25

Family

ID=37022878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/063815 WO2007009869A1 (fr) 2005-07-20 2006-07-03 Dispositif pour developper une force de freinage dans un systeme de freinage d'un vehicule a moteur

Country Status (2)

Country Link
DE (1) DE102005033868A1 (fr)
WO (1) WO2007009869A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010003290A1 (de) 2010-03-25 2011-09-29 Robert Bosch Gmbh Vorrichtung und Verfahren zum Steuern eines Bremssystems

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0893650A (ja) * 1994-09-21 1996-04-09 Toyota Motor Corp ポンプ制御装置
DE4438721A1 (de) * 1994-10-29 1996-05-02 Teves Gmbh Alfred Hydraulische Bremsanlage
WO1997047504A1 (fr) * 1996-06-07 1997-12-18 Robert Bosch Gmbh Systeme de freinage hydraulique de vehicule avec dispositif antiblocage et antipatinage
WO1998000322A1 (fr) * 1996-07-01 1998-01-08 Itt Manufacturing Enterprises, Inc. Installation de freinage hydraulique pourvue d'un dispositif de precharge
WO1998000323A1 (fr) * 1996-07-01 1998-01-08 Itt Manufacturing Enterprises, Inc. Installation de freinage hydraulique pourvue d'une pompe de recirculation
DE10144879C1 (de) * 2001-09-12 2003-09-11 Bosch Gmbh Robert Verfahren und Vorrichtung zur Verbesserung der Druckaufbaudynamik
WO2005054028A1 (fr) * 2003-12-08 2005-06-16 Continental Teves Ag & Co. Ohg Procede pour etalonner des soupapes hydrauliques, a commande electrique, assurant une regulation analogique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0893650A (ja) * 1994-09-21 1996-04-09 Toyota Motor Corp ポンプ制御装置
DE4438721A1 (de) * 1994-10-29 1996-05-02 Teves Gmbh Alfred Hydraulische Bremsanlage
WO1997047504A1 (fr) * 1996-06-07 1997-12-18 Robert Bosch Gmbh Systeme de freinage hydraulique de vehicule avec dispositif antiblocage et antipatinage
WO1998000322A1 (fr) * 1996-07-01 1998-01-08 Itt Manufacturing Enterprises, Inc. Installation de freinage hydraulique pourvue d'un dispositif de precharge
WO1998000323A1 (fr) * 1996-07-01 1998-01-08 Itt Manufacturing Enterprises, Inc. Installation de freinage hydraulique pourvue d'une pompe de recirculation
DE10144879C1 (de) * 2001-09-12 2003-09-11 Bosch Gmbh Robert Verfahren und Vorrichtung zur Verbesserung der Druckaufbaudynamik
WO2005054028A1 (fr) * 2003-12-08 2005-06-16 Continental Teves Ag & Co. Ohg Procede pour etalonner des soupapes hydrauliques, a commande electrique, assurant une regulation analogique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 08 30 August 1996 (1996-08-30) *

Also Published As

Publication number Publication date
DE102005033868A1 (de) 2007-01-25

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