DE102012201820A1 - Brake device i.e. by-wire brake device, for motor car, has relapse plane formed by connection between brake operation unit and brake parts, and controller including high degree at redundancy with respect to control of brake and actuator - Google Patents

Brake device i.e. by-wire brake device, for motor car, has relapse plane formed by connection between brake operation unit and brake parts, and controller including high degree at redundancy with respect to control of brake and actuator Download PDF

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Publication number
DE102012201820A1
DE102012201820A1 DE201210201820 DE102012201820A DE102012201820A1 DE 102012201820 A1 DE102012201820 A1 DE 102012201820A1 DE 201210201820 DE201210201820 DE 201210201820 DE 102012201820 A DE102012201820 A DE 102012201820A DE 102012201820 A1 DE102012201820 A1 DE 102012201820A1
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Prior art keywords
brake
actuator
braking
control
redundancy
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DE201210201820
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German (de)
Inventor
Jesko Frederik Krüger
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE201210201820 priority Critical patent/DE102012201820A1/en
Publication of DE102012201820A1 publication Critical patent/DE102012201820A1/en
Granted legal-status Critical Current

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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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • 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
    • B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
    • 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
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake 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
    • 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
    • B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081—Systems with stroke simulating devices for driver input
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/413—Plausibility monitoring, cross check, redundancy

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

Abstract

The device has an electromechanical operated parking brake and a service brake provided between a brake operation unit and wheel brake parts. The brake parts are actuated by an actuator and coupled to a hydraulic position unit that is directly pressurized by the brake operation unit operated by a driver. A relapse plane for brake actuation during failure of the actuator is formed by a connection between the brake operation unit and the wheel brake parts. A brake controller includes high degree at redundancy with respect to the control of the parking brake and actuator. An independent claim is also included for a method for decelerating a motor car.

Description

Die Erfindung betrifft eine elektrohydraulische by wire Bremseinrichtung und ein Verfahren zu deren Steuerung im Fehlerfall für ein Kraftfahrzeug, nach dem Oberbegriff des ersten Anspruchs.The invention relates to an electro-hydraulic by wire brake device and a method for controlling it in the event of a fault for a motor vehicle, according to the preamble of the first claim.

Es gibt Kraftfahrzeuge, die über eine so genannte „by wire” Bremseinrichtung verfügen, bei welcher die direkte Verbindung zwischen einem Bremspedal und den eigentlichen Bremsen aufgetrennt ist. Ein Steuergerät berechnet einen Bremskraftsollwert, welcher eine von der Bremseinrichtung auf das Kraftfahrzeug wirkende Bremskraft kennzeichnet. Der Bremskraftsollwert kann beispielsweise auf Basis eines gemessenen Bremsdrucks bei einer hydraulischen Bremseinrichtung oder eines Ansteuerstroms eines elektrischen Bremsaktors bei einer elektrischen Bremseinrichtung berechnet werden. Der Bremskraftsollwert kann vom Steuergerät selbst bei der Bestimmung von Ansteuersignalen für Stellglieder der Bremseinrichtung verwendet werden. Außerdem kann der Bremskraftsollwert anderen Steuerungseinrichtungen des Kraftfahrzeugs, wie beispielsweise einer elektromechanischen Feststellbremse, über eine Signalverbindung, beispielsweise einen CAN-Bus, zur Verfügung gestellt werden.There are motor vehicles that have a so-called "by wire" braking device, in which the direct connection between a brake pedal and the actual brakes is separated. A control unit calculates a desired braking force value which characterizes a braking force acting on the motor vehicle by the braking device. The brake force setpoint value can be calculated, for example, on the basis of a measured brake pressure in a hydraulic brake device or a drive current of an electric brake actuator in an electrical brake device. The braking force setpoint can be used by the control unit itself in the determination of control signals for actuators of the braking device. In addition, the braking force setpoint can be made available to other control devices of the motor vehicle, such as an electromechanical parking brake, via a signal connection, for example a CAN bus.

Außerdem können Kraftfahrzeuge mit einer elektromechanischen Feststellbremse ausgerüstet sein, welche zur Festbremsung des Kraftfahrzeugs im Stand über einen Taster im Fahrzeuginnenraum angesteuert wird.In addition, motor vehicles may be equipped with an electromechanical parking brake, which is controlled for stalling the motor vehicle in the state via a button in the vehicle interior.

Dazu beschreibt die DE 10 2009 025 674 A1 ein Bremsensteuergerät, das zur Ansteuerung von Brems-Aktuatoren mit mindestens einem Funktionselement zur Ansteuerung des elektronischen Bremssystems und mit mindestens einem Funktionselement zur Ansteuerung der Feststellbremsfunktion ausgestattet ist, also eine Steuereinheit, welche einerseits die Ansteuerung der By-wire Bremse und andererseits die Ansteuerung der elektromechanischen Feststellbremse enthält.This describes the DE 10 2009 025 674 A1 a brake control unit, which is equipped to control brake actuators with at least one functional element for controlling the electronic brake system and at least one functional element for controlling the parking brake function, ie a control unit, which on the one hand the control of the by-wire brake and on the other hand, the control of the electromechanical Parking brake contains.

Es existieren beim Stand der Technik Fehlerfälle, in denen zwar einerseits die Steuereinheit noch funktioniert, andererseits jedoch Komponentenfehler bei der By-wire Bremsfunktion zu einer Nichtverfügbarkeit der Funktion Bremskraftverstärkung führen. Dies führt zu einer Reduktion der Bremsleistung, was den Fahrer dazu bewegen kann, das Fahrzeug aus Vorsicht nicht weiter zu betreiben. Da ein zusätzliches pumpenbetriebenes Bremsregelsystem nicht mehr vorhanden ist, ist eine heute übliche hydraulische Bremskraftunterstützung als Rückfallebene und Redundanz der Bremskraftunterstützung nicht mehr möglich. Eine mögliche Rückfallebene ist, den Fahrer über das Bremssystem und über eine definierte Bremspedalcharakteristik Bremsmomente direkt stellen zu lassen. Bei der zu wählenden Bremspedalcharakteristik ist ein Kompromiss zwischen einerseits geringen Betätigungskräften und andererseits kurzen Pedalwegen einzugehen. Es existiert kein eindeutiges Kundenbild, welches eine bestimmte Ausprägungstendenz nahelegt.In the prior art, there are error cases in which, on the one hand, the control unit still functions, on the other hand, however, component errors in the by-wire brake function lead to unavailability of the brake power boost function. This leads to a reduction of the braking power, which may cause the driver to operate the vehicle as a precautionary measure. Since an additional pump-operated brake control system is no longer available, today's usual hydraulic brake assistance as a fallback level and redundancy of the brake power assistance is no longer possible. A possible fallback mode is to let the driver directly set braking torques via the brake system and via a defined brake pedal characteristic. When choosing the brake pedal characteristic a compromise between on the one hand low operating forces and on the other hand short pedal travel is to be entered. There is no clear image of the customer, which suggests a certain tendency.

Aufgabe der Erfindung ist daher, eine Bremseinrichtung und ein Verfahren zum Abbremsen eines Kraftfahrzeugs für eine by-wire-Bremse bereit zu stellen, die bei einem Bremsvorgang im Fehlerfall eine Rückfallebene besitzt, die den Konflikt zwischen Pedalwegminimierung und Kraftminimierung kostengünstig löst und so auf einfache Weise dem Fahrer eine gewohnte Bremsenbetätigung ermöglicht.The object of the invention is therefore to provide a braking device and a method for braking a motor vehicle for a by-wire brake, which has a fallback during a braking operation in case of failure, which solves the conflict between Pedalwegminimierung and power minimization cost and so in a simple manner allows the driver a usual brake operation.

Die Aufgabe wird durch die Merkmale des ersten Anspruchs gelöst. Weitere Ausbildungen der Erfindung beschreiben die Merkmale und die Verfahrensschritte der abhängigen Ansprüche.The object is solved by the features of the first claim. Further embodiments of the invention describe the features and method steps of the dependent claims.

Nach der Erfindung ist eine Bremseinrichtung für ein Kraftfahrzeug mit einer elektromechanisch betriebenen Feststellbremse und einer Betriebsbremse ohne hydraulische Druckverbindung zwischen einer Bremsbetätigungseinrichtung und aller Radbremsen, die von einem mit Ausgangssignalen aus der Bremsbetätigung angesteuerten Aktuator beaufschlagt werden und die an eine Hydraulik-Stelleinheit gekoppelt sind, die direkt über die von einem Fahrer betätigte Bremsbetätigungseinrichtung beaufschlagt wird und über eine im Hydraulikkreis einschaltbare Verbindung zwischen der Bremsbetätigungseinrichtung und den Radbremsen eine Rückfallebene zur Bremsenbetätigung bei Ausfall des Aktuators bildet, dadurch gekennzeichnet, dass die Bremseinrichtung eine Bremsensteuerung besitzt, die einen hohen Grad an Redundanz aufweist, bezüglich der Ansteuerung der elektromechanisch betriebenen Feststellbremse und der Ansteuerung des Radbremsen-Aktuators.According to the invention is a braking device for a motor vehicle with an electromechanically operated parking brake and a service brake without hydraulic pressure connection between a brake actuator and all wheel brakes, which are acted upon by an output signals from the brake actuator actuated and coupled to a hydraulic actuator, the is applied directly via the actuated by a driver brake actuator and forms a switchable in the hydraulic circuit connection between the brake actuator and the wheel brakes a fallback to brake operation in case of failure of the actuator, characterized in that the brake device has a brake control having a high degree of redundancy with respect to the control of the electromechanically operated parking brake and the control of the wheel brake actuator.

Wenn die Bremsensteuereinheit derart gestaltet ist, dass die Ansteuerung der elektromechanischen Feststellbremse und die Ansteuerung des by-wire Aktuators einen hohen Grad an Redundanz aufweisen, hat das den Vorteil, dass das Bereitstellen einer Bremskraftverstärkung auch bei einer Bremseinrichtung ohne pumpenbetriebenem Bremsregelsystem auf einfache Weise über eine Rückfallebene möglich ist, wenn die Steuereinheit einen Ausfall der Bremskraftverstärkung der by-wire Bremse detektiert. Dabei kann die Redundanz auch die Energieversorgung und/oder die Bereitstellung externer Signale und/oder die eigenständige Ansteuerung von Stelleinheiten betreffen.If the brake control unit is designed in such a way that the control of the electromechanical parking brake and the control of the by-wire actuator have a high degree of redundancy, this has the advantage that the provision of a brake booster in a brake device without a pump-operated brake control system in a simple manner via a Fall-back level is possible if the control unit detects a failure of the brake booster of the by-wire brake. In this case, the redundancy can also relate to the power supply and / or the provision of external signals and / or the independent actuation of actuator units.

Sobald die Steuereinheit einen Ausfall der Bremskraftverstärkung der by-wire Bremse wenigstens an einer Radbremse detektiert, jedoch aufgrund der vorhandenen Redundanz im Steuergerät die elektromechnische Feststellbremse bedienen kann, werden Bremsmomente an der Fahrzeugachse, auf die die elektromechanische Feststellbremse wirkt, zum Beispiel an der Hinterachse, durch die elektromechanische Feststellbremse eingestellt. Die Funktionsausprägung kann dabei in besonders vorteilhaften Ausführungen der Erfindung in zwei verschiedenen Verfahrensarten erfolgen.Once the control unit detects a failure of the brake booster of the by-wire brake at least at a wheel brake, but due to the existing redundancy in Control unit can operate the electromechanical parking brake, braking torques on the vehicle axle on which the electromechanical parking brake acts, for example, on the rear axle, set by the electromechanical parking brake. The functional expression can be carried out in two particularly advantageous embodiments of the invention in two different types of processes.

Ein erstes vorteilhaftes Verfahren zum Abbremsen eines Kraftfahrzeugs ist dadurch gekennzeichnet, dass die Rückfallebene der hydraulischen Bremsenbetätigung durch den Fahrer so ausgeführt ist, dass dieser die Radbremsen beider Fahrzeugachsen hydraulisch betätigt und die elektromechanische Feststellbremse das Bremsmoment unter Einhaltung der Fahrstabilität erhöht. Während ein zweites bevorzugtes Verfahren zum Abbremsen eines Kraftfahrzeugs dadurch gekennzeichnet ist, dass die Rückfallebene der hydraulischen Bremsenbetätigung durch den Fahrer so ausgeführt ist, dass dieser zunächst die Radbremsen beider Fahrzeugachsen hydraulisch betätigt und nach einem gewissen Betätigungsweg der Betätigungseinrichtung von der Fahrzeugachse entkoppelt wird, an der die elektromechanische Feststellbremse verbaut ist, wobei an dieser Fahrzeugachse darauf folgend die elektromechanische Feststellbremse das Bremsmoment unter Einhaltung der Fahrstabilität aufbringt und das vom Fahrer hydraulisch aufgebrachte Bremsmoment auf die Radbremsen der anderen Fahrzeugachse umgeleitet wird. Letzteres Verfahren hat den Vorteil, dass die Pedalwege für den Fahrer kürzer werden.A first advantageous method for braking a motor vehicle is characterized in that the fallback of the hydraulic brake actuation by the driver is designed so that it hydraulically actuates the wheel brakes of both vehicle axles and the electromechanical parking brake increases the braking torque while maintaining the driving stability. While a second preferred method for braking a motor vehicle is characterized in that the fallback of the hydraulic brake actuation by the driver is designed so that it first hydraulically actuates the wheel brakes of both vehicle axles and after a certain actuation path of the actuator is decoupled from the vehicle axle at the the electromechanical parking brake is installed, said at this vehicle axle following the electromechanical parking brake applying the braking torque while maintaining the driving stability and the driver hydraulically applied braking torque is redirected to the wheel brakes of the other vehicle axle. The latter method has the advantage that the pedal travel for the driver are shorter.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 102009025674 A1 [0004] DE 102009025674 A1 [0004]

Claims (5)

Bremseinrichtung für ein Kraftfahrzeug mit einer elektromechanisch betriebenen Feststellbremse und einer Betriebsbremse ohne hydraulische Druckverbindung zwischen einer Bremsbetätigungseinrichtung und aller Radbremsen, die von einem mit Ausgangssignalen aus der Bremsbetätigung angesteuerten Aktuator beaufschlagt werden und die an eine Hydraulik-Stelleinheit gekoppelt sind, die direkt über die von einem Fahrer betätigte Bremsbetätigungseinrichtung beaufschlagt wird und über eine im Hydraulikkreis einschaltbare Verbindung zwischen der Bremsbetätigungseinrichtung und den Radbremsen eine Rückfallebene zur Bremsenbetätigung bei Ausfall des Aktuators bildet, dadurch gekennzeichnet, dass die Bremseinrichtung eine Bremsensteuerung besitzt, die einen hohen Grad an Redundanz aufweist bezüglich der Ansteuerung der elektromechanisch betriebenen Feststellbremse und der Ansteuerung des Radbremsen-Aktuators.Braking device for a motor vehicle with an electromechanically operated parking brake and a service brake without hydraulic pressure connection between a brake actuator and all wheel brakes, which are acted upon by an output signals from the brake actuated actuator and which are coupled to a hydraulic actuator, directly over that of a Driver actuated brake actuator is acted upon and forms a switchable in the hydraulic circuit connection between the brake actuator and the wheel a fallback to brake operation in case of failure of the actuator, characterized in that the brake device has a brake control having a high degree of redundancy with respect to the control of electromechanical operated parking brake and the control of the wheel brake actuator. Bremseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Redundanz die Energieversorgung und/oder die Bereitstellung externer Signale und/oder die eigenständige Ansteuerung von Stelleinheiten betrifft.Braking device according to claim 1, characterized in that the redundancy relates to the power supply and / or the provision of external signals and / or the independent control of actuators. Verfahren zum Abbremsen eines Kraftfahrzeugs nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass Bremsmomente an der Fahrzeugachse, auf die die elektromechanische Feststellbremse wirkt, von dieser aufgebracht werden, sobald ein Steuergerät einen Ausfall einer Bremskraftverstärkung wenigstens an einer Radbremse detektiert.Method for braking a motor vehicle according to claim 1 or 2, characterized in that braking torques on the vehicle axle, on which the electromechanical parking brake acts, are applied by the same, as soon as a control unit detects a failure of a brake booster at least on a wheel brake. Verfahren zum Abbremsen eines Kraftfahrzeugs nach Anspruch 3, dadurch gekennzeichnet, dass die Rückfallebene der hydraulischen Bremsenbetätigung durch den Fahrer so ausgeführt ist, dass dieser die Radbremsen beider Fahrzeugachsen hydraulisch betätigt und die elektromechanische Feststellbremse das Bremsmoment unter Einhaltung der Fahrstabilität erhöht.Method for braking a motor vehicle according to claim 3, characterized in that the fallback level of the hydraulic brake actuation by the driver is designed so that it hydraulically actuates the wheel brakes of both vehicle axles and the electromechanical parking brake increases the braking torque while maintaining the driving stability. Verfahren zum Abbremsen eines Kraftfahrzeugs nach Anspruch 3, dadurch gekennzeichnet, dass die Rückfallebene der hydraulischen Bremsenbetätigung durch den Fahrer so ausgeführt ist, dass dieser zunächst die Radbremsen beider Fahrzeugachsen hydraulisch betätigt und nach einem gewissen Betätigungsweg der Betätigungseinrichtung von der Fahrzeugachse entkoppelt wird, an der die elektromechanische Feststellbremse verbaut ist, wobei an dieser Fahrzeugachse darauf folgend die elektromechanische Feststellbremse das Bremsmoment unter Einhaltung der Fahrstabilität aufbringt und das vom Fahrer hydraulisch aufgebrachte Bremsmoment auf die Radbremsen der anderen Fahrzeugachse umgeleitet wird.Method for braking a motor vehicle according to claim 3, characterized in that the fallback level of the hydraulic brake actuation by the driver is carried out so that it is first hydraulically actuated the wheel brakes of both vehicle axles and decoupled from the vehicle axle after a certain actuation of the actuator, at which electromechanical parking brake is installed, which subsequently applied to this vehicle axle, the electromechanical parking brake braking torque while maintaining the driving stability and the driver hydraulically applied braking torque is redirected to the wheel brakes of the other vehicle axle.
DE201210201820 2012-02-07 2012-02-07 Brake device i.e. by-wire brake device, for motor car, has relapse plane formed by connection between brake operation unit and brake parts, and controller including high degree at redundancy with respect to control of brake and actuator Granted DE102012201820A1 (en)

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DE201210201820 DE102012201820A1 (en) 2012-02-07 2012-02-07 Brake device i.e. by-wire brake device, for motor car, has relapse plane formed by connection between brake operation unit and brake parts, and controller including high degree at redundancy with respect to control of brake and actuator

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DE201210201820 DE102012201820A1 (en) 2012-02-07 2012-02-07 Brake device i.e. by-wire brake device, for motor car, has relapse plane formed by connection between brake operation unit and brake parts, and controller including high degree at redundancy with respect to control of brake and actuator

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US10518763B2 (en) 2017-04-11 2019-12-31 Audi Ag Brake system for a motor vehicle as well as method of operating a brake system for a motor vehicle
CN113544026A (en) * 2019-03-12 2021-10-22 采埃孚商用车***汉诺威有限公司 Electronically controllable brake system with two backup levels (alternative design)
DE102021205745A1 (en) 2021-06-08 2022-12-08 Continental Automotive Technologies GmbH Braking system for motor vehicles with an extended fallback level

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DE102009025674A1 (en) 2008-07-01 2010-01-07 Continental Teves Ag & Co. Ohg Brake control device for controlling and / or regulating actuators for influencing a braking function of a motor vehicle

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WO2017055152A1 (en) * 2015-10-01 2017-04-06 Continental Teves Ag & Co. Ohg Brake system and method for operating a brake system
CN108025718A (en) * 2015-10-01 2018-05-11 大陆-特韦斯贸易合伙股份公司及两合公司 Braking system and the method for running brakes
CN108025718B (en) * 2015-10-01 2020-06-26 大陆-特韦斯贸易合伙股份公司及两合公司 Brake system and method for operating a brake system
US11052891B2 (en) 2015-10-01 2021-07-06 Continental Teves Ag & Co. Ohg Brake system and method for operating a brake system
US10518763B2 (en) 2017-04-11 2019-12-31 Audi Ag Brake system for a motor vehicle as well as method of operating a brake system for a motor vehicle
CN113544026A (en) * 2019-03-12 2021-10-22 采埃孚商用车***汉诺威有限公司 Electronically controllable brake system with two backup levels (alternative design)
CN113544026B (en) * 2019-03-12 2023-09-08 采埃孚商用车***汉诺威有限公司 Electronically controllable brake system with two backup classes
DE102021205745A1 (en) 2021-06-08 2022-12-08 Continental Automotive Technologies GmbH Braking system for motor vehicles with an extended fallback level

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