WO2002014131A1 - Procede de commande d'un systeme de freinage pouvant etre regule electroniquement et circuit - Google Patents

Procede de commande d'un systeme de freinage pouvant etre regule electroniquement et circuit Download PDF

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Publication number
WO2002014131A1
WO2002014131A1 PCT/EP2001/009289 EP0109289W WO0214131A1 WO 2002014131 A1 WO2002014131 A1 WO 2002014131A1 EP 0109289 W EP0109289 W EP 0109289W WO 0214131 A1 WO0214131 A1 WO 0214131A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
control unit
electronic control
switched
brake booster
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
Application number
PCT/EP2001/009289
Other languages
German (de)
English (en)
Inventor
Bernhard Giers
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.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
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 claimed from DE10135508A external-priority patent/DE10135508A1/de
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of WO2002014131A1 publication Critical patent/WO2002014131A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B60T8/34—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
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • 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
    • B60T8/404—Control of the pump unit
    • B60T8/4045—Control of the pump unit involving ON/OFF switching
    • 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
    • B60T8/441—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 using hydraulic boosters
    • B60T8/442—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 using hydraulic boosters the booster being a fluid return pump, e.g. in combination with a brake pedal force booster

Definitions

  • the invention relates to a method for controlling an electronically controllable brake system for a vehicle with a drive which can be switched on and off and which has a brake force increasing unit which can be controlled externally by an electronic control unit.
  • the invention also relates to a circuit arrangement of an electronically controllable brake system with an electronic control unit and a brake booster.
  • the vehicle brake systems used today rely on brake power support, which in the case of passenger vehicles is usually done by a vacuum brake booster.
  • the braking power support of the booster is based on a vacuum suction power of the drive motor and is therefore only guaranteed when the drive motor is running.
  • the invention has for its object to develop a method or a circuit arrangement of the type mentioned in such a way that even when the drive motor is not running or when the ignition of the
  • This object is achieved in that in a method for controlling an electronically controllable brake system for a vehicle with a drive that can be switched on and off and that has a brake force increasing unit that can be controlled externally by an electronic control unit, in the case in which the drive or the electrical one
  • the energy supply system of the drive is switched off, an energy supply system is active is switched or remains active, which the electronic control unit and
  • Brake force increasing unit supplied with energy.
  • the term “externally controllable braking force increasing unit” here means a unit by means of which the braking force or the braking pressure can in principle be increased independently of the driver or “actively”.
  • a suitable braking force is made available by a suitable activation of the pressure increasing unit even when the drive of the vehicle, in particular an internal combustion engine, is not running or even when the ignition switch for the internal combustion engine is inactive stands. This measure increases the active safety of vehicles, since adequate braking force support can be ensured in any case.
  • the energy supply of the electronic control unit and brake force increasing unit by the energy supply system takes place independently of a parking brake or parking brake function. This means that only the function of the service vehicle brake, but not the function of a parking brake or parking brake, is to be ensured by the measure according to the invention.
  • the braking force is increased by a pump, such as a hydraulic pump or a vacuum pump, but preferably a hydraulic pump, and the pump can be driven by an electric motor which can be controlled by the electronic control unit.
  • the braking force increasing unit is switched to active or remains switched on when the drive is switched off.
  • a brake booster interacting with the drive of the vehicle in particular vacuum booster, is provided that a missing or inadequate amplification function of the brake booster can be recognized by an error detection device and in the event that a missing one or insufficient amplification function is detected, the energy supply system for the electronic control unit and the brake force increasing unit is switched to active or remains switched on.
  • a missing or inadequate amplification function is recognized by a sensor or a switch in the interior of a vacuum amplifier.
  • the object on which the invention is based is also achieved by a circuit arrangement of an electronically controllable brake system with an electronic control unit and a brake booster, which in particular for
  • the method according to the invention is used and is characterized in that a sensor or a switch is assigned to the viewing arrangement to detect a missing or inadequate amplification function of the brake booster, which sensor or switch is connected to a control transistor which is used in the absence or insufficient boosting function of the brake booster controls a switching transistor, which thus changes to a closed switching position and actively switches the electronic control unit.
  • Brake booster preferably a vacuum brake booster, used and the
  • Control transistor goes when there is no or insufficient amplification function of the
  • Brake booster in a closed switching position, for controlling the switching transistor, which thereby changes into a closed switching position and actively switches the electronic control unit.
  • the electronically controllable brake system has a vacuum brake booster and that the switch for detecting a missing or insufficient boost function is arranged essentially within the vacuum brake booster.
  • a missing or insufficient vacuum can also be sensed via analog sensors, in particular pressure sensors, and the signal can be fed to the control unit.
  • the method according to the invention and / or the circuit arrangement according to the invention is preferably used for an electronically controllable brake system with a vehicle dynamics control (ESP), a traction control system (ASR) and / or an optimized hydraulic brake system (OHB).
  • ESP vehicle dynamics control
  • ASR traction control system
  • OLB optimized hydraulic brake system
  • 0HB N here means a brake system in which, in addition to a vacuum brake booster, the brake is boosted by a hydraulic pressure booster, typically a motor-pump unit.
  • a hydraulic pressure booster typically a motor-pump unit.
  • OHB systems in particular are contemplated in which a lack of vacuum suction power of an internal combustion engine as a vehicle drive or a certain design of the vacuum amplifier is compensated by a preferably hydraulic amplifier.
  • the electric motor-operated pump is advantageously used as the braking force increasing unit.
  • a necessary braking force increase and thus a necessary deceleration performance of the vehicle can advantageously be ensured even in the event of a vacuum failure and / or a low vacuum suction power and / or a low design point of the vacuum brake booster.
  • the figure shows an embodiment of the circuit arrangement according to the invention, which is arranged within an electronic control unit (ECU) of a vehicle brake system.
  • ECU electronice control unit
  • the circuit arrangement shown in the figure has a switch 1, which is preferably inside a
  • Vacuum brake booster (Boosters) is arranged and connected to the ECU via two connections 10,11. If the auxiliary energy is missing or too low, in particular due to a lack of vacuum in the booster, switch 1 is opened. As a result, a connection of the vehicle electrical system 3 to the ECU is connected to a control transistor 5, in this case to the base of the transistor 5, via a first resistor 2. As a result, a base current flows through the base and emitter to ground 4.
  • the control transistor 5 acts like an open switch, as a result of which a switching transistor 6 is connected to a second transistor via its collector Resistor 7 current is supplied.
  • the current supply takes place at the base of the switching transistor 6, which is connected via a third resistor 8 to the emitter of the switching transistor 6, whereby the switching transistor 6 opens and a load current via its emitter from the vehicle electrical system connection 3 via its collector and via a first diode 9 activation of the e 'lekronischen control unit (ECU) is supplied. If the ignition is switched on, the current is supplied to the ECU via connection 12 via a second diode 13. By means of this circuit and by the method, the ECU is activated even when the drive motor is switched off and thus a lack of vacuum support. This allows the ECU to control a pressure increase unit, such as a motor-pump unit, which provides brake force assistance
  • the double function of the switch 1 is particularly advantageous here, which on the one hand senses the lack of vacuum and on the other hand also directly activates the ECU.
  • the figure shows a simple basic circuit diagram for such an activation circuit. On the basis of the invention, it is also possible to modify and / or supplement this circuit within the scope of the skilled person.
  • the ECU is continuously energized. Then, however, their current consumption should be relatively low and preferably less than approximately 100 ⁇ A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

La présente invention concerne un circuit et un procédé de commande d'un système de freinage pouvant être régulé électroniquement, destinés à un véhicule comportant un entraînement pouvant être mis en marche et coupé, ledit véhicule présentant un dispositif d'augmentation de la puissance de freinage pouvant être commandé de l'extérieur par une unité de régulation électronique. Ledit procédé est caractérisé en ce qu'un système d'alimentation d'énergie alimentant en énergie l'unité de régulation électronique et le dispositif d'augmentation de la puissance de freinage, est activé ou reste activé lorsque l'entraînement ou le système d'alimentation électrique de l'entraînement sont coupés.
PCT/EP2001/009289 2000-08-11 2001-08-10 Procede de commande d'un systeme de freinage pouvant etre regule electroniquement et circuit Ceased WO2002014131A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10039222.9 2000-08-11
DE10039222 2000-08-11
DE10135508.4 2001-07-20
DE10135508A DE10135508A1 (de) 2000-08-11 2001-07-20 Verfahren zur Steuerung einer elektronisch regelbaren Bremsanlage und Schaltungsanordnung

Publications (1)

Publication Number Publication Date
WO2002014131A1 true WO2002014131A1 (fr) 2002-02-21

Family

ID=26006665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/009289 Ceased WO2002014131A1 (fr) 2000-08-11 2001-08-10 Procede de commande d'un systeme de freinage pouvant etre regule electroniquement et circuit

Country Status (1)

Country Link
WO (1) WO2002014131A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59156855A (ja) * 1983-02-24 1984-09-06 Toyota Motor Corp ブレ−キブ−スタの負圧供給装置
US4699435A (en) * 1984-12-06 1987-10-13 Alfred Teves Gmbh Circuit arrangement for monitoring and controlling the pressure in the auxiliary pressure supply system of a hydraulic motor vehicle brake arrangement
US4738112A (en) * 1985-09-10 1988-04-19 Toyota Jidosha Kabushiki Kaisha Method and device for controlling brake booster supplementary vacuum pump ensuring good booster vacuum and low pump wear
JPS63314385A (ja) * 1987-06-17 1988-12-22 Nippon Denso Co Ltd 車両用ポンプ駆動制御装置
US4845463A (en) * 1987-04-08 1989-07-04 Navistar International Transportation Corp. Brake system with auxiliary pump warning circuit
DE3913113A1 (de) * 1989-04-21 1990-10-25 Vdo Schindling Schaltungsanordnung zum anschalten einer elektronischen antiblockiereinrichtung
WO1992000211A1 (fr) * 1990-06-29 1992-01-09 Allied-Signal Inc. Procede et systeme de freinage electrique
JPH06144203A (ja) * 1992-11-13 1994-05-24 Jidosha Kiki Co Ltd 液圧ブレーキ倍力装置のポンプ駆動回路
DE19743959A1 (de) * 1997-10-04 1999-04-08 Bayerische Motoren Werke Ag Bremsanlage für Kraftfahrzeuge

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59156855A (ja) * 1983-02-24 1984-09-06 Toyota Motor Corp ブレ−キブ−スタの負圧供給装置
US4699435A (en) * 1984-12-06 1987-10-13 Alfred Teves Gmbh Circuit arrangement for monitoring and controlling the pressure in the auxiliary pressure supply system of a hydraulic motor vehicle brake arrangement
US4738112A (en) * 1985-09-10 1988-04-19 Toyota Jidosha Kabushiki Kaisha Method and device for controlling brake booster supplementary vacuum pump ensuring good booster vacuum and low pump wear
US4845463A (en) * 1987-04-08 1989-07-04 Navistar International Transportation Corp. Brake system with auxiliary pump warning circuit
JPS63314385A (ja) * 1987-06-17 1988-12-22 Nippon Denso Co Ltd 車両用ポンプ駆動制御装置
DE3913113A1 (de) * 1989-04-21 1990-10-25 Vdo Schindling Schaltungsanordnung zum anschalten einer elektronischen antiblockiereinrichtung
WO1992000211A1 (fr) * 1990-06-29 1992-01-09 Allied-Signal Inc. Procede et systeme de freinage electrique
JPH06144203A (ja) * 1992-11-13 1994-05-24 Jidosha Kiki Co Ltd 液圧ブレーキ倍力装置のポンプ駆動回路
DE19743959A1 (de) * 1997-10-04 1999-04-08 Bayerische Motoren Werke Ag Bremsanlage für Kraftfahrzeuge

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 007 (M - 350) 12 January 1985 (1985-01-12) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 154 (M - 814) 14 April 1989 (1989-04-14) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 453 (M - 1662) 24 August 1994 (1994-08-24) *

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