EP1912841A1 - Systeme de freinage de vehicule combine comprenant des freins de roue qui peuvent etre actionnes par voie hydraulique ou electromecanique - Google Patents

Systeme de freinage de vehicule combine comprenant des freins de roue qui peuvent etre actionnes par voie hydraulique ou electromecanique

Info

Publication number
EP1912841A1
EP1912841A1 EP06764281A EP06764281A EP1912841A1 EP 1912841 A1 EP1912841 A1 EP 1912841A1 EP 06764281 A EP06764281 A EP 06764281A EP 06764281 A EP06764281 A EP 06764281A EP 1912841 A1 EP1912841 A1 EP 1912841A1
Authority
EP
European Patent Office
Prior art keywords
wheel brakes
control
electromechanically
pedal travel
travel sensor
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Withdrawn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
EP06764281A
Other languages
German (de)
English (en)
Inventor
Andreas Heise
Matthias Marcks
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
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1912841A1 publication Critical patent/EP1912841A1/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Withdrawn legal-status Critical Current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
    • B60T8/26—Arrangements 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
    • B60T8/266—Arrangements 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
    • B60T8/267—Arrangements 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 for hybrid systems with different kind of brakes on different axles
    • 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
    • B60T13/741—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 an ultimate actuator

Definitions

  • the present invention relates to a combined vehicle brake system, in particular for motor vehicles, with hydraulically or electromechanically actuated wheel brakes on a first axis and with electromechanically operable wheel brakes on a second axis, wherein the electromechanically actuated wheel brakes in accordance with the braking request in the first axis and / or in accordance with of output signals of a pedal travel sensor, which determines the actuation path of a brake pedal, can be actuated, and wherein the electromechanically actuatable wheel brakes comprise a parking brake device, which can be controlled by means of a control element.
  • Such a combined vehicle brake system is known for example from EP 1 175 322 Bl.
  • a first brake circuit and a second brake circuit are each associated with a front wheel brake device while a third brake circuit has electric actuators.
  • These electromechanical wheel brake units are controlled either directly by a driver request detection or by the brake pressure of the front axle.
  • a parking brake is provided, which acts on the electromechanical rear wheel Radbremshimen.
  • the prior art vehicle brake system thus performs two separate lines, one line for the driver's request and another line for the parking brake, to the rear wheel-wheel brake units, which is relatively expensive.
  • the present invention is therefore an object of the invention to improve a combined vehicle brake system of the type mentioned in that the structure and in particular the power consumption is reduced.
  • the output signals the pedal travel sensor and the control signals of the control element are transmitted so that they are distinguishable from the control and regulation units.
  • the pedal travel sensor is designed as a redundant potentiometer or redundant analog value transmitter whose output signals are recoded into two opposing voltage values.
  • the output signals are recoded into complementary current values.
  • the signal obtained is compared with the signal of the other control unit.
  • control and regulating units perform a monitoring of the signal line, which supplies the output signals of the pedal travel sensor and the control signals of the control element to the electromechanically actuated wheel brakes on the second axis to wire breakage and / or short circuit.
  • FIG. 1 is a circuit diagram of the vehicle brake system according to the invention with hydraulically and electromechanically actuated wheel brakes.
  • FIG. 2 shows a circuit diagram of a first embodiment of the invention. tion with a pedal travel potentiometer, which supplies a voltage as an output signal and
  • Fig. 3 is a circuit diagram of a second embodiment of the invention with a pedal travel sensor, which impresses a current.
  • the vehicle brake system according to the invention comprises, on the one hand, hydraulically actuable wheel brakes 1 and, on the other hand, electromechanically actuatable wheel brakes 2.
  • the hydraulically actuated wheel brakes 1 are arranged on a first axis of the motor vehicle, the front axle, and are acted upon by means of a pedal-operated vacuum brake booster 4 with a downstream master cylinder 5 with hydraulic pressure medium.
  • the hydraulically actuated wheel brakes 1 are connected with the interposition of intake valves 8 via a hydraulic line 6 to the master cylinder 5.
  • the controlled pressure medium is discharged via outlet valves 7 into a pressureless pressure medium reservoir 9.
  • a plurality of pressure sensors 10 are provided to determine the hydraulic pressure applied and to carry out control operations, such as anti-lock regulations.
  • electromechanically actuated wheel brakes 2 are arranged on a second axis, the rear axle of the motor vehicle, which can be actuated in accordance with the hydraulic pressure applied in the hydraulically actuated wheel brakes 1.
  • the pressure introduced into the hydraulically actuated wheel brakes 1 is detected with the aid of the pressure sensors 10. telt.
  • the electromechanically actuatable wheel brakes 2 are actuated at the rear axle, ie taking into account a brake force distribution function between the front and rear axles, an application force of the electromechanically actuatable wheel brakes 2 is set.
  • the electromechanically actuated wheel brakes 2 in accordance with the actuation path of the brake pedal 3, which means according to the desire of the driver to be controlled.
  • the actuation path of the brake pedal 3 is determined by means of a pedal travel sensor 11.
  • the control of the electromechanically actuated wheel brakes 2 is made decentralized by two electronic control units 15, which are each associated with an electromechanically actuated wheel brake 2.
  • the electromechanically actuatable wheel brakes 2 have a parking brake device 12, with which the wheel brakes can be locked in the clamped state in order to carry out a parking brake.
  • the parking brake device 12 can be controlled by means of a control element 13.
  • the control element 13 is designed as a button and has three switch positions for the commands “clamping”, “neutral” and “release”, wherein only the middle neutral position represents a stable switching position.
  • the present invention now provides that the output signals of the pedal travel sensor 11 are applied via a signal line 14 to the control element 13, wherein the signal line 14 is further led to the attached to the electromechanically actuated wheel brakes 2 control and regulating units 15 and the commands of Operating element 13 transmits.
  • both the source Signals of the pedal travel sensor 11 and the control signals of the control element 13 via the same signal line 14 fed to the electromechanically actuated wheel brakes 2. It is therefore a combined signal input.
  • the signal input is used to transmit the information from the control element 13 and at the same time to transmit the information about the position of the brake pedal 3. Due to the double use of the signal line to each control unit 15 on the wheel results as a side effect nor the monitoring of the signal line 14 itself on wire break and short circuit.
  • the plausibility of the signals is ensured by a redundant design of the pedal travel sensor 11 and the operating element 13, wherein in each case an information only one control and regulating unit 15 is supplied to the wheel.
  • the control and regulation unit 15 communicate with each other via a serial data bus, which is not shown in Fig. 1. Information about the just mentioned output signals of the pedal travel sensor 11 and of the control element 13 are also exchanged via this data bus and made plausible with the respective other.
  • the control and regulation units 15 thus carry out a plausibility check of the signals obtained by comparing the signal obtained with the signal of the other control and regulation unit 15.
  • the pedal travel sensor 11 is formed as a potentiometer, which supplies a voltage as an output signal.
  • the output signal of the pedal travel sensor 11 and the output signal of the operating element 13 are transmitted via the same signal line 14 to the two control and regulating units 15.
  • the control units 15 are labeled ECU- right and ECU-left, where ECU for Electronic Control unit is and the location information provides information about whether it is the control unit 15 on the left or right rear wheel of the motor vehicle.
  • both control units 15 communicate with each other via a serial data bus 16.
  • the state of ignition of the motor vehicle is applied to a line labeled IGN for "Ignition.” is.
  • the pedal travel information is recoded into two opposing voltages which, for example, move between 1/3 KL30 potential and 2/3 KL30 potential. These voltages are looped through the control element 13 in neutral position to the control and regulating units 15 and evaluated there analogously.
  • ground and KL30 potential are very low impedance connected to the control and regulating units 15. Even with potential offsets between the individual elements is still distinguishable due to the impedance test described below, whether it is a pedal travel information or control information.
  • Each control unit 15 may perform an impedance test by alternately loading the signal to ground and KL30.
  • a pedal travel sensor 11 is used with complementary current outputs.
  • the current values output by the pedal travel sensor 11 are also passed through the operating element 13.
  • the control element 13 in Fig. 3 still has a third switching level, which can be read by another controller.
  • a so-called I / V converter in the current mode of the pedal travel sensor 11, a current-proportional voltage signal is supplied to the A / D converter 17, and the voltage on the signal lines is maintained approximately at KL30 / 2. If the operating element 13 is actuated, the nominal conversion range of the combined I / V converter is undershot or exceeded and the corresponding voltage at the input is converted into logic signals which indicate an actuation of the operating element 13.
  • Both versions have in common that information about the way of the brake pedal 3 are only available when the control element 13 is not actuated.
  • This lack of information is functional but no restriction, since the pedal travel information is irrelevant when the control element 13 is operated when the motor vehicle is stationary: the motor vehicle is already standing and is being held at the current brake pressure.
  • an actuation of the operating element 13 while driving is an emergency braking situation and the braking is then controlled solely via the operating element 13.
  • the lack of information just described functionally means no restriction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

La présente invention concerne un système de freinage de véhicule combiné destiné en particulier à des véhicules automobiles, comprenant des freins de roue qui peuvent être actionnés par voie hydraulique sur un premier essieu et des freins de roue qui peuvent être actionnés par voie électromécanique sur un second essieu. Selon l'invention, les freins de roue qui peuvent être actionnés par voie électromécanique, sont actionnés en fonction de la pression hydraulique injectée dans les freins de roues qui peuvent être actionnés par voie hydraulique, et/ou en fonction des signaux de sortie d'un capteur de course de pédale qui détermine la course d'actionnement d'une pédale de frein; et les freins de roue qui peuvent être actionnés par voie électromécanique comprennent un dispositif de frein de stationnement qui peut être commandé au moyen d'un élément de commande. Afin de limiter le nombre de lignes de signal, les signaux de sortie du capteur de course de pédale (11) et les signaux de commande de l'élément de commande (13) sont acheminés par la même ligne de signal (14) jusqu'aux freins de roues qui peuvent être actionnés par voie électromécanique, sur le second essieu. Cette disposition simple n'implique la mise en place que d'une seule ligne pour deux signaux.
EP06764281A 2005-08-02 2006-08-01 Systeme de freinage de vehicule combine comprenant des freins de roue qui peuvent etre actionnes par voie hydraulique ou electromecanique Withdrawn EP1912841A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005036237 2005-08-02
DE102006035913A DE102006035913A1 (de) 2005-08-02 2006-07-31 Kombinierte Fahrzeugbremsanlage mit hydraulisch und elektromechanisch betätigbaren Radbremsen
PCT/EP2006/064908 WO2007014952A1 (fr) 2005-08-02 2006-08-01 Systeme de freinage de vehicule combine comprenant des freins de roue qui peuvent etre actionnes par voie hydraulique ou electromecanique

Publications (1)

Publication Number Publication Date
EP1912841A1 true EP1912841A1 (fr) 2008-04-23

Family

ID=37232409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06764281A Withdrawn EP1912841A1 (fr) 2005-08-02 2006-08-01 Systeme de freinage de vehicule combine comprenant des freins de roue qui peuvent etre actionnes par voie hydraulique ou electromecanique

Country Status (3)

Country Link
EP (1) EP1912841A1 (fr)
DE (1) DE102006035913A1 (fr)
WO (1) WO2007014952A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008024180A1 (de) * 2007-06-19 2008-12-24 Continental Teves Ag & Co. Ohg Kombinierte Bremsanlage, insbesondere für Kraftfahrzeuge
US20100299035A1 (en) 2007-07-26 2010-11-25 Continental Teves Ag & Co., Ohg Parking brake device and method for operating same
DE102011086756A1 (de) 2010-11-23 2012-05-24 Continental Teves Ag & Co. Ohg Verfahren zur Fehlererkennung eines Bedienschalters zur Auslösung einer Fahrzeugfunktion eines Fahrzeuges sowie Bedienschalter zur Durchführung des Verfahrens
DE102012217825A1 (de) 2012-09-28 2014-04-03 Continental Teves Ag & Co. Ohg Kombinierte Bremsanlage für Fahrzeuge sowie Verfahren zu deren Betrieb
FR3002508B1 (fr) * 2013-02-25 2016-07-29 Commissariat Energie Atomique Systeme de freinage d'un vehicule
JP5831486B2 (ja) * 2013-03-29 2015-12-09 トヨタ自動車株式会社 ブレーキシステム
JP6336273B2 (ja) * 2013-12-24 2018-06-06 Ntn株式会社 車両用ブレーキ装置
DE102014226704A1 (de) 2014-12-19 2016-06-23 Continental Teves Ag & Co. Ohg Bremsverfahren bei Not- beziehungsweise Vollbremsung
CN107128293B (zh) * 2017-04-06 2020-02-07 广州电力机车有限公司 一种自卸车电液联合制动方法
CN109552287A (zh) * 2017-09-26 2019-04-02 比亚迪股份有限公司 线控制动***及车辆

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919878C1 (de) * 1999-04-30 2000-08-10 Daimler Chrysler Ag Bremsvorrichtung für Fahrzeuge
US7976109B2 (en) * 2003-01-14 2011-07-12 Bwi Company Limited S.A. Failsafe operation of a hybrid brake system for a vehicle
US20060220447A1 (en) * 2003-04-08 2006-10-05 Berhard Giers Method for the operation of a hydraulic brake system with an integrated parking brake function for motor vehicles
EP1538363B1 (fr) * 2003-12-01 2012-05-30 BWI Company Limited S.A. Frein hydraulique de parking et procédé d'utilisation dudit frein sur une pente

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007014952A1 *

Also Published As

Publication number Publication date
DE102006035913A1 (de) 2007-03-08
WO2007014952A1 (fr) 2007-02-08

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