EP2396201A1 - Procédé pour faire fonctionner un système de freinage hydraulique de véhicule - Google Patents

Procédé pour faire fonctionner un système de freinage hydraulique de véhicule

Info

Publication number
EP2396201A1
EP2396201A1 EP09795750A EP09795750A EP2396201A1 EP 2396201 A1 EP2396201 A1 EP 2396201A1 EP 09795750 A EP09795750 A EP 09795750A EP 09795750 A EP09795750 A EP 09795750A EP 2396201 A1 EP2396201 A1 EP 2396201A1
Authority
EP
European Patent Office
Prior art keywords
brake
vehicle
master cylinder
valves
wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09795750A
Other languages
German (de)
English (en)
Inventor
Herbert Vollert
Remy Garnier
Reinhard Weiberle
Timo Jahnz
Volker Mehl
Frank Kneip
Dirk Mahnkopf
Jens Kolarsky
Stephan Hoenle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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 EP2396201A1 publication Critical patent/EP2396201A1/fr
Withdrawn legal-status Critical Current

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
    • B60T8/321—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
    • B60T8/3255—Systems in which the braking action is dependent on brake pedal data
    • B60T8/326—Hydraulic systems
    • B60T8/3265—Hydraulic systems with control of the booster
    • 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
    • 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
    • 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
    • B60T13/74—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 electrical assistance or drive
    • 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
    • B60T13/74—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 electrical assistance or drive
    • B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
    • 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
    • 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 method for operating a hydraulic vehicle brake system, which has a master cylinder with an electromechanical brake booster, with the features of the preamble of claim 1.
  • such a hydraulic vehicle brake system which is conventional construction, with the exception of the brake booster.
  • the vehicle brake system has a dual-circuit master cylinder, to which four wheel brakes, divided into two brake circuits, are connected.
  • a two-circuit vehicle brake system is not mandatory for the invention, nor the number of brake circuits and the wheel brakes.
  • the known vehicle brake system has a wheel slip control device, for the designations such as (brake) anti-lock, drive slip, vehicle dynamics and / or stability control device and the abbreviations such as ABS, ASR, FDR, ESP are common.
  • the hydraulic part of the Radschlupfregel comprises for each wheel brake pressure build-up valve and a Bremsdruckabsenkventil and for each brake circuit, a hydraulic pump, a separating valve with which the master cylinder is hydraulically separated from the brake circuit, and an intake valve, through which the master cylinder for the purpose of rapid braking pressure build-up with a suction side the hydraulic pump is connectable, has.
  • a hydraulic pump for each wheel brake pressure build-up valve and a Bremsdruckabsenkventil and for each brake circuit, a hydraulic pump, a separating valve with which the master cylinder is hydraulically separated from the brake circuit, and an intake valve, through which the master cylinder for the purpose of rapid braking pressure build-up with a suction side the hydraulic pump is connectable, has.
  • the known vehicle brake system has an electromechanical brake booster with a hollow brake wave electric motor whose rotor has a nut of a spindle drive, which converts the rotary drive movement of the electric motor in a translational movement for actuating the master cylinder.
  • the brake booster may have a rack gear possibly with a screw for driving the rack, to implement the rotary drive movement of an electric motor in a translational movement to actuation of the master cylinder.
  • An electromechanical brake booster with a linear motor, an electric magnet or a piezoelement can also be used for the method according to the invention. The list is not exhaustive.
  • the vehicle brake system is an auxiliary power brake system, i. an actuating force to actuate the master cylinder is applied in part as muscle power of a driver and the rest as a foreign force from the electromechanical brake booster. Also conceivable is an operation as a foreign-power brake system, in which the actuation force is generated exclusively as a foreign force by the brake booster and a force exerted by a driver for braking effort muscle power or an executed by the driver actuating stroke as a target for controlling or regulating than
  • the method according to the invention with the features of claim 1 provides, close here as Tranventil valve, which is arranged between the master cylinder and the at least one wheel brake of the vehicle brake system to maintain a prevailing in the at least one wheel brake wheel brake and thus a braking force to obtain.
  • An applied braking force can be maintained without having to energize the electromechanical brake booster.
  • the brake booster is thereby thermally relieved and reduced electrical load on an electrical system of a vehicle.
  • Claim 2 provides a parking brake function, which is also referred to as a parking brake function.
  • the isolation valve is closed only when the vehicle is stationary, according to the embodiment of claim 3, when a parking brake pressure prevails in the vehicle brake system.
  • Parking brake pressure is the hydraulic pressure that is necessary and sufficient to keep the stationary vehicle stationary, even on a slope or downhill. The vehicle is thereby kept at a standstill, even if it is parked on a slope.
  • the parking brake pressure required for this purpose depends inter alia on the vehicle, in particular its weight, the vehicle brake system itself and possibly also on changing parameters such as, for example, a temperature of the at least one wheel brake.
  • the vehicle brake system can be used as a parking brake system, without the electromechanical brake booster must be energized to maintain a braking force.
  • Claim 4 provides to use the existing isolation valves of a wheel slip control device, so that no additional construction and installation effort is necessary.
  • the isolation valves of all brake circuits, some brake circuits or a brake circuit can be closed to maintain the wheel brake pressure.
  • At least one valve is provided as a separating valve between the master cylinder and the at least one wheel brake.
  • FIGURE shows a hydraulic circuit diagram of a hydraulic vehicle brake system for carrying out the method according to the invention.
  • the inventive hydraulic vehicle brake system 1 shown in the drawing has a slip control device 12 (anti-lock control
  • she is designed as a dual-circuit brake system with two brake circuits I, Il, which are connected to a master cylinder 2.
  • Each brake circuit I, Il is connected via a separating valve 3 to the master cylinder 2.
  • the separating valves 3 are in their currentless basic position open 2/2-way solenoid valves.
  • the separating valves 3 are each a hydraulically connected in parallel from the master cylinder 2 to wheel brakes 4 check valve 5.
  • each brake circuit I, Il are connected via brake pressure build-up valves 6.
  • the brake pressure build-up valves 6 are in their currentless home position open 2/2-way solenoid valves. They are non-return valves 7 connected in parallel, by the wheel brakes 4 in the direction of
  • Master cylinder 2 can be flowed through.
  • a brake pressure reduction valve 8 is connected, which are connected together to a suction side of a hydraulic pump 9.
  • the brake pressure reduction valves 8 are designed as 2/2-way solenoid valves closed in their currentless basic position.
  • a pressure side of the hydraulic pump 9 is connected between the brake pressure buildup valves 6 and the isolation valves 3, d. H. the pressure side of the hydraulic pump 9 is connected via the brake pressure build-up valves 6 with the wheel brakes 4 and via the separating valve 3 to the master cylinder 2.
  • the brake pressure buildup valves 6 and the brake pressure lowering valves 8 are for better controllability
  • Each of the two brake circuits I, Il has a hydraulic pump 9, which are drivable together with an electric motor 10.
  • the suction sides of the hydraulic pumps 9 are connected to the brake pressure lowering valves 8.
  • hydraulic accumulator 1 1 for receiving and temporary storage of brake fluid are present, which flows out of the wheel brakes 4 by opening the Bremstikabsenkventile 8 during a slip control.
  • the brake pressure build-up valves 6 and the brake pressure reduction valves 8 form wheel brake pressure modulation valve arrangements with which a wheel-specific brake pressure control for a wheel slip control in a manner known per se and not explained here is possible with the hydraulic pump 9 driven.
  • the separating Valves 3 are closed in a wheel slip control, ie the vehicle brake system 1 is hydraulically separated from the master cylinder 2.
  • suction valve 19 in each brake circuit I Il the suction side of the hydraulic pump 9 with the master cylinder 2 is connectable.
  • the intake valves 19 are in their normally closed normal position closed 2/2-way solenoid valves. Become
  • the master cylinder 2 has an electromechanical brake booster 13, which generates an external force by means of an electric motor 14, which actuates the master cylinder 2 together with a muscular force which is applied via a brake pedal 15.
  • the symbolically represented electric motor 14 is integrated in the brake booster 13.
  • the electric motor 14 may be a rotary motor whose rotational movement is reduced by a gear and converted into a translational movement for actuating the master cylinder 2. It is also an embodiment of the brake booster 13 with an electric linear motor or an electromagnet possible. The list is not exhaustive.
  • an electronic control unit 16 is present. With a force sensor 17, a pedal force exerted on the brake pedal 15 and with a displacement sensor 18 a position of the brake pedal 15 can be measured.
  • the separating valves 3 are closed when actuated vehicle brake system 1 in order to maintain a built up by actuation of the master cylinder 2 Radbremstik and thus a braking force of the vehicle brake system 1, without the electric motor 14 of the brake booster 13 must be energized.
  • the electric motor 14 is thermally relieved and reduces a current load of an electrical system of a vehicle equipped with the vehicle brake system 1 motor vehicle. If the vehicle brake system 1, the wheel slip control device described
  • the isolation valves 3 are present, so that the inventive Process requires no additional components, but uses the existing isolation valves 3.
  • the method according to the invention can be used in order to keep a braking force applied by actuation of the master brake cylinder 2 constant, for example when driving downhill, without having to energize the electric motor 14 of the brake booster 13.
  • a parking brake function which is often referred to as a parking brake function, usable, i. E. in order to keep a stationary motor vehicle equipped with the vehicle brake system 1 at a standstill:
  • the isolation valves 3 are closed when the vehicle is at a standstill.
  • the isolation valves 3 are closed when a parking brake pressure has been established by operation of the master cylinder 2.
  • the parking brake pressure is a prevailing hydraulic pressure in the vehicle brake system 1, in particular in the wheel brakes 4, which is sufficient for the vehicle in the vehicle

Landscapes

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

Abstract

La présente invention concerne un procédé pour faire fonctionner un système de freinage hydraulique de véhicule (1) présentant un amplificateur de force de freinage électro-mécanique (13, 14). Selon l'invention, une soupape de séparation (3) disposée entre le cylindre de frein principal (2) et les freins de roue (4) est refermée afin de maintenir une pression de frein de roue et ainsi une force de freinage. Pour maintenir constante la force de freinage, le moteur électrique (14) de d'amplificateur de force de freinage (13) ne doit pas pour autant être alimenté. Le système de freinage de véhicule (1) peut être utilisé en tant que frein de stationnement. La soupape de séparation (3) est présente lorsque le système de freinage de véhicule (1) présente un système de régulation anti-patinage.
EP09795750A 2009-02-11 2009-12-14 Procédé pour faire fonctionner un système de freinage hydraulique de véhicule Withdrawn EP2396201A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009000769A DE102009000769A1 (de) 2009-02-11 2009-02-11 Verfahren zum Betrieb einer hydraulischen Fahrzeugbremsanlage
PCT/EP2009/067074 WO2010091758A1 (fr) 2009-02-11 2009-12-14 Procédé pour faire fonctionner un système de freinage hydraulique de véhicule

Publications (1)

Publication Number Publication Date
EP2396201A1 true EP2396201A1 (fr) 2011-12-21

Family

ID=41611385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09795750A Withdrawn EP2396201A1 (fr) 2009-02-11 2009-12-14 Procédé pour faire fonctionner un système de freinage hydraulique de véhicule

Country Status (7)

Country Link
US (1) US20120161507A1 (fr)
EP (1) EP2396201A1 (fr)
JP (1) JP2012517378A (fr)
KR (1) KR20110114648A (fr)
CN (1) CN102307761A (fr)
DE (1) DE102009000769A1 (fr)
WO (1) WO2010091758A1 (fr)

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WO2015036601A2 (fr) * 2013-09-16 2015-03-19 Ipgate Ag Dispositif de freinage et procédé pour faire fonctionner un dispositif de freinage
DE102013225785A1 (de) * 2013-12-12 2015-06-18 Robert Bosch Gmbh Schlupfgeregelte hydraulische Fahrzeugbremsanlage und Kombination eines Druckschwingungsdämpfers und eines Rückschlagventils für eine solche Fahrzeugbremsanlage
KR101536247B1 (ko) * 2014-04-25 2015-07-13 현대모비스 주식회사 차량용 제동장치 및 제동방법
KR101588751B1 (ko) * 2014-10-28 2016-01-26 현대자동차 주식회사 하이브리드 차량의 클러치 제어 방법
KR102264094B1 (ko) * 2014-11-03 2021-06-14 현대모비스 주식회사 차량 자세 제어장치 및 제어방법
DE102016202224A1 (de) * 2016-02-15 2017-08-17 Continental Teves Ag & Co. Ohg Verfahren zum Betreiben einer Bremsanlage eines Fahrzeuges und Bremsanlage
DE102016222045A1 (de) 2016-11-10 2018-05-17 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben einer Bremsanlage eines Kraftfahrzeugs, Bremsanlage
DE102017006713A1 (de) * 2017-07-14 2019-01-17 Lucas Automotive Gmbh Technik zum Betreiben einer Kraftfahrzeugbremsanlage
DE102018210538A1 (de) * 2018-06-28 2020-01-02 Robert Bosch Gmbh Hydraulisches Bremssystem für ein Fahrzeug mit mindestens zwei Achsen
DE102018212290A1 (de) * 2018-07-24 2020-01-30 Robert Bosch Gmbh Verfahren zum Betreiben eines Bremssystems sowie Bremssystem
DE102018212279A1 (de) 2018-07-24 2020-01-30 Robert Bosch Gmbh Verfahren zum Betreiben eines Bremssystems sowie Bremssystem
CN109435941B (zh) * 2018-10-10 2021-11-05 北京新能源汽车股份有限公司 控制车辆自动驻车的方法和系统及车辆和存储介质
DE102021201253A1 (de) 2021-02-10 2022-08-11 Robert Bosch Gesellschaft mit beschränkter Haftung Prüfvorrichtung und Verfahren zum Überprüfen einer Radbremse eines Fahrzeugs auf eine Leckage

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Also Published As

Publication number Publication date
WO2010091758A1 (fr) 2010-08-19
US20120161507A1 (en) 2012-06-28
CN102307761A (zh) 2012-01-04
JP2012517378A (ja) 2012-08-02
DE102009000769A1 (de) 2010-08-12
KR20110114648A (ko) 2011-10-19

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