DE102012221003A1 - Method for executing wheel brake interference in motor vehicle with electronically controllable brake control system, involves performing automatic wheel brake interference depending on actuation of brake pedal - Google Patents

Method for executing wheel brake interference in motor vehicle with electronically controllable brake control system, involves performing automatic wheel brake interference depending on actuation of brake pedal Download PDF

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DE102012221003A1
DE102012221003A1 DE201210221003 DE102012221003A DE102012221003A1 DE 102012221003 A1 DE102012221003 A1 DE 102012221003A1 DE 201210221003 DE201210221003 DE 201210221003 DE 102012221003 A DE102012221003 A DE 102012221003A DE 102012221003 A1 DE102012221003 A1 DE 102012221003A1
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brake
recuperation
wheel brake
motor vehicle
interference
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DE201210221003
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German (de)
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Bernd Jamin
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE201210221003 priority Critical patent/DE102012221003A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/10—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for automatic control superimposed on human control to limit the acceleration of the vehicle, e.g. to prevent excessive motor current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0076—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to braking
    • 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
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/10—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
    • 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
    • B60T13/58—Combined or convertible systems
    • B60T13/585—Combined or convertible systems comprising friction brakes and retarders
    • B60T13/586—Combined or convertible systems comprising friction brakes and retarders the retarders being of the electric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D61/00—Brakes with means for making the energy absorbed available for use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00—Driver interactions
    • B60L2250/26—Driver interactions by pedal actuation
    • 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
    • B60T2270/60—Regenerative braking
    • B60T2270/604—Merging friction therewith; Adjusting their repartition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Regulating Braking Force (AREA)

Abstract

The method involves performing an automatic wheel brake interference depending on the actuation of a brake pedal, if a recuperation (R) does not occur exceptionally in an operating condition in a motor vehicle (1) with a process for recuperation of energy. The wheel brake interference is executed by a brake control system (4) with the force which corresponds to the lack of negative driving braking force by the absence of the recuperation.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Durchführung eines Radbremseingriffes in einem Kraftfahrzeug, insbesondere eines Elektrofahrzeuges oder eines Hybridfahrzeuges mit Elektroantrieb, mit einem Verfahren zur Rekuperation von freier Energie.The invention relates to a method for carrying out a wheel brake intervention in a motor vehicle, in particular an electric vehicle or a hybrid vehicle with electric drive, with a method for recuperation of free energy.

Verfahren zur Rekuperation von freier Energie in einem Kraftfahrzeug sind bereits bekannt. So offenbart beispielsweise die DE 10 2005 039 314 A1 ein Verfahren zur Rekuperation von Energie bei einem Bremsvorgang eines Hybrid-Fahrzeugs mit einer hydraulischen und pneumatischen Bremsanlage. Hierbei wird ein Fahrer-Bremswunsch bzw. die gewünschte Gesamtverzögerung erfasst, und die von der elektrischen Maschine bewirkbare Fahrzeugverzögerung ermittelt. In Abhängigkeit vom Verzögerungsanteil der elektrischen Maschine wird der vom Fahrer aufgebrachte Bremsdruck reduziert, so dass insgesamt die vom Fahrer gewünschte Verzögerung ausgeübt wird. Somit wird die elektrische Maschine in einem Bereich maximaler Energieerzeugung betrieben, wodurch ein maximaler Anteil der kinetischen Energie des Fahrzeugs zurückgewonnen werden kann.Methods for recuperation of free energy in a motor vehicle are already known. For example, the DE 10 2005 039 314 A1 a method for recuperation of energy in a braking operation of a hybrid vehicle with a hydraulic and pneumatic brake system. In this case, a driver's braking request or the desired total deceleration is detected, and the vehicle deceleration that can be effected by the electric machine is determined. Depending on the delay component of the electric machine, the brake pressure applied by the driver is reduced, so that overall the deceleration desired by the driver is exerted. Thus, the electric machine is operated in a region of maximum power generation, whereby a maximum proportion of the kinetic energy of the vehicle can be recovered.

Weiter offenbart die DE 10 2004 051 530 A1 ein Kraftfahrzeug mit einem Rekuperationsgenerator, wobei die in einer Schubphase des Kraftfahrzeugs erzeugte Rekuperationsenergie speicherbar ist.Next discloses the DE 10 2004 051 530 A1 a motor vehicle with a recuperation generator, wherein the Rekuperationsenergie generated in a coasting phase of the motor vehicle can be stored.

Die bekannten Verfahren haben alle gemeinsam, dass die bei normalem Betrieb des Kraftfahrzeugs ohnehin freie Energie durch ein entsprechendes Verfahren automatisch zurückgewonnen wird. Bei den meisten Verfahren wird Energie nur dann zurückgewonnen, wenn der Fahrer einen Bremseingriff vornimmt bzw. das Bremspedal betätigt. Wird eine Rekuperation von Energie bereits im Schubbetrieb vorgenommen, wird diese nur mit einer sehr geringen Rekuperationsleistung ausgeführt, da aufgrund der Rekuperation eine (gegenüber dem normalen Schubbetrieb) verstärkte Verzögerung des Fahrzeugs verursacht wird, die der Fahrer als störend empfinden kann.The known methods all have in common that the energy which is already available during normal operation of the motor vehicle is automatically recovered by a corresponding method. In most methods, energy is only recovered when the driver applies a brake application or depresses the brake pedal. If a recuperation of energy already made in overrun, it is carried out only with a very low recuperation, because due to the recuperation (compared to the normal overrun operation) increased deceleration of the vehicle is caused, which may feel the driver disturbing.

Daher ist wiederum aus der DE 10 2008 061 821 A1 ein Verfahren zur Rekuperation bekannt, bei dem prinzipiell davon ausgegangen wird, dass das Kraftfahrzeug rekuperationsfähig ist, also eine Zurückgewinnung und Wandlung von freier Energie in elektrische und/oder thermische Energie bei bestimmten (rekuperationsfähigen) Betriebszuständen möglich ist. Dabei wird eine verstärkte Rekuperation auch in solchen Betriebssituationen vorgenommen wird, bei denen mit hoher Wahrscheinlichkeit davon ausgegangen werden kann, dass sich der Fahrer durch die aufgrund der Rekuperation verursachte (verstärkte) Verzögerung des Fahrzeugs in seiner Fahrweise nicht eingeschränkt fühlt. Bei diesem bekannten Verfahren wird bereits bei einem erkannten fahrerseitigen und/oder systemseitigen Verzögerungswunsch, bei dem das Bremspedal (noch) nicht betätigt ist bzw. (noch) kein aktivier Bremseingriff vorgenommen wird, eine Rekuperation von Energie bzw. eine verstärkte Rekuperation von Energie vorgenommen wird. Ein Verzögerungswunsch zeichnet sich unter anderem dadurch aus, dass der Fahrer das Fahrpedal löst, um in den Schubbetrieb überzugehen.Therefore, again from the DE 10 2008 061 821 A1 a method for recuperation is known in which it is assumed in principle that the motor vehicle is recuperative, so a recovery and conversion of free energy into electrical and / or thermal energy at certain (recuperation) operating conditions is possible. In this case, an increased recuperation is also carried out in those operating situations in which it can be assumed with high probability that the driver does not feel restricted by the (increased) deceleration of the vehicle caused by the recuperation in his driving style. In this known method, a recuperation of energy or an increased recuperation of energy is already at a detected driver side and / or system side deceleration request in which the brake pedal is not (yet) operated or (still) no activated braking intervention is made , A deceleration request is characterized, inter alia, by the fact that the driver releases the accelerator pedal to go into overrun mode.

Es ist Aufgabe der Erfindung, das Verhalten eines Kraftfahrzeugs mit einem Verfahren zur Rekuperation für den Fahrer einschätzbarer zu gestalten.It is an object of the invention to make the behavior of a motor vehicle with a method for recuperation more assessable for the driver.

Diese Aufgabe wird durch ein Verfahren nach Anspruch 1 gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den abhängigen Ansprüchen.This object is achieved by a method according to claim 1. Advantageous developments emerge from the dependent claims.

Der Erfindung liegt folgende Erkenntnis zugrunde:
Bei Kraftfahrzeugen mit einem Verfahren zur Rekuperation, in dem freie mechanische Energie in elektrische Energie gewandelt und im Bordnetz gespeichert oder direkt einem Fahrzeugaggregat zur Verfügung gestellt wird, gewöhnt sich der Fahrer an die Bremswirkung durch eine Rekuperation bei bestimmten Betriebszuständen. Allerdings gibt es Situationen bei eben diesen Betriebszuständen (z. B. Schubbetriebsphasen), bei denen ausnahmsweise keine Rekuperation möglich ist. Grund hierfür kann beispielsweise ein voll aufgeladener elektrischer Speicher und/oder ein ausgeschaltetes Fahrzeugaggregat sein, das üblicherweise durch die Rekuperation elektrisch versorgt wird.The invention is based on the following finding:
In motor vehicles with a method for recuperation in which free mechanical energy converted into electrical energy and stored in the electrical system or provided directly to a vehicle unit, the driver gets used to the braking effect by recuperation in certain operating conditions. However, there are situations in these same operating states (eg overrun operating phases) in which, exceptionally, no recuperation is possible. The reason for this may be, for example, a fully charged electrical storage and / or a switched-off vehicle unit, which is usually supplied electrically by the recuperation.

Daher wird erfindungsgemäß vorrangig aus Sicherheits- und Komfortgründen vorgeschlagen, automatisch einen Radbremseingriffes mittels des im Kraftfahrzeug üblicherweise ohnehin vorhandenen elektronisch steuerbaren Bremsregelsystems unabhängig von der Betätigung des Bremspedals durchzuführen, wenn in einem grundsätzlich rekuperationsfähigen Betriebszustand eine Rekuperation ausnahmsweise nicht möglich ist. Vorzugsweise wird der Radbremseingriff durch das Bremsregelsystem mit der Kraft durchgeführt, die der fehlenden negativen Antriebsbremskraft durch das Ausbleiben der Rekuperation entspricht. Bei längerem Ausbleiben der Rekuperation kann die Kraft des automatischen Bremseingriffes aus Effizienzgründen wieder reduziert werden.Therefore, the invention proposes primarily for safety and comfort reasons, automatically carry out a wheel brake intervention by means of the motor vehicle usually already present electronically controllable brake control system regardless of the operation of the brake pedal, when in a basically recuperative operating state recuperation exceptionally not possible. Preferably, the wheel brake intervention is performed by the brake control system with the force that corresponds to the lack of negative drive brake force by the absence of recuperation. If the recuperation lasts longer, the force of the automatic brake intervention can be reduced again for reasons of efficiency.

Dieses erfindungsgemäße Verfahren wird vorzugsweise durch entsprechende Programmierung mindestens eines elektronischen Steuergerätes im Kraftfahrzeug realisierbar gemacht.This inventive method is preferably made feasible by appropriate programming of at least one electronic control unit in the motor vehicle.

Die Erfindung wird nun anhand eines Ausführungsbeispiels näher erläutert. Dabei zeigt die einzige Figur ein vereinfachtes Ablaufdiagramm zur Darstellung des erfindungsgemäßen Verfahrens in einer vorteilhaften Ausgestaltung. The invention will now be explained in more detail with reference to an embodiment. The single FIGURE shows a simplified flow chart for illustrating the method according to the invention in an advantageous embodiment.

In der einzigen Figur ist ein Kraftfahrzeug 1 schematisch als Elektro- oder Hybridfahrzeug dargestellt, mit einem Elektromotor 2, mit einem elektrischen Speicher 3, mit einem Radbremssystem 4 und mit einem elektronischen Steuergerät 5. Das Steuergerät 5 erhält als Eingangssignal u. a. die Stellung eines Fahrpedals FP. Darüber hinaus ist das Steuergerät 2 elektrisch mit den anderen dargestellten Komponenten 2, 3 und 4 verbunden.In the single figure is a motor vehicle 1 shown schematically as an electric or hybrid vehicle, with an electric motor 2 , with an electrical storage 3 , with a wheel brake system 4 and with an electronic control unit 5 , The control unit 5 receives as input signal, inter alia, the position of an accelerator pedal FP. In addition, the control unit 2 electrically with the other components shown 2 . 3 and 4 connected.

Im Stuergerät 2 ist ein Programmodul mit folgendem Ablaufdiagramm enthalten: Das Ablaufdiagramm startet in einem ersten Schritt, in dem abgefragt wird, ob sich das Fahrzeug aktuell in einem rekuperationsfähigen Betriebszustand, z. B. im Schubbetrieb FP = 0, befindet. Ist dies der Fall, wird in einem zweiten Schritt eine Rekuperationsleistung im Sinne einer möglichen erreichbaren Antriebsbremskraft FAB abgeschätzt. In einem dritten Schritt wird daraufhin überprüft, ob möglichweise eine Rekuperation R nicht möglich oder nur eingeschränkt möglich ist. In einem vierten Schritt wird bei eingeschränkter oder unmöglicher Rekuperation R die durch Ausbleiben der Rekuperation fehlende Antriebsbremskraft FAB durch die Kraft FRB eines automatischen Radbremseingriffes kompensiert. Der automatische Radbremseingriff wird unabhängig davon, ob der Fahrer das Bremspedal betätigt – also gerade auch dann, wenn der Fahrer das Bremspedal nicht betätigt – durchgeführt.In the steamer 2 is a program module with the following flowchart included: The flowchart starts in a first step, in which it is queried whether the vehicle is currently in a recuperative operating state, eg. B. in overrun FP = 0, is located. If this is the case, a recuperation power in the sense of a possible achievable drive braking force F AB is estimated in a second step. In a third step, a check is then made as to whether a recuperation R is possibly impossible or only possible to a limited extent. In a fourth step, with limited or impossible recuperation R, the missing due to lack of recuperation drive brake force F AB is compensated by the force F RB an automatic wheel brake. The automatic wheel brake intervention is carried out regardless of whether the driver operates the brake pedal - in other words, even if the driver does not actuate the brake pedal.

Sollte eine Rekuperation über längere Zeit Δt nicht möglich sein, kann in einem fünften Schritt die Kraft FRB des Radbremseingriffes nach und nach reduziert werden, um einerseits zwar eine erwartete Verzögerung nicht überraschend wegzunehmen, aber andererseits die Effizienz nicht unnötig zu verschlechtern.Should a recuperation over a longer time .DELTA.t not be possible in a fifth step, the force F RB of Radbremseingriffes be gradually reduced, on the one hand not unexpectedly take away an expected delay, but on the other hand, the efficiency does not deteriorate unnecessarily.

Somit wird eine Abstimmung zwischen Rekuperations- und Verzögerungsvermögen in der Weise vorgenommen, dass sich das Kraftfahrzeug hinsichtlich der Gesamtverzögerungswirkung immer gleich verhält, so dass der Fahrer durch eine ausbleibende erwartete Verzögerung nicht überrascht wird.Thus, a vote between recuperation and deceleration is made in such a way that the motor vehicle behaves always the same in terms of total deceleration effect, so that the driver is not surprised by a lack expected delay.

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 102005039314 A1 [0002] DE 102005039314 A1 [0002]
  • DE 102004051530 A1 [0003] DE 102004051530 A1 [0003]
  • DE 102008061821 A1 [0005] DE 102008061821 A1 [0005]

Claims (3)

Verfahren zur Durchführung eines Radbremseingriffes in einem Kraftfahrzeug mit einem elektronisch steuerbaren Bremsregelsystem (4), bei dem ein automatischer Radbremseingriff unabhängig von der Betätigung des Bremspedals durchgeführt wird, wenn bei einem Kraftfahrzeug (1) mit einem Verfahren zur Rekuperation (R) von Energie, in einem grundsätzlich rekuperationsfähigen Betriebszustand eine Rekuperation (R) ausnahmsweise nicht erfolgt.Method for carrying out a wheel brake intervention in a motor vehicle with an electronically controllable brake control system ( 4 ), in which an automatic wheel brake intervention is performed independently of the operation of the brake pedal, when in a motor vehicle ( 1 ) with a method for recuperation (R) of energy, in a basically recuperative operating state recuperation (R) exceptionally not done. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass, der Radbremseingriff durch das Bremsregelsystem (4) mit der Kraft (FRB) durchgeführt wird, die der fehlenden negativen Antriebsbremskraft (FAB) durch das Ausbleiben der Rekuperation (R) entspricht.A method according to claim 1, characterized in that, the wheel brake intervention by the brake control system ( 4 ) is performed with the force (F RB ) corresponding to the missing negative drive brake force (F AB ) due to the absence of recuperation (R). Verfahren nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass bei längerem Ausbleiben der Rekuperation (R) die Kraft (FRB) des automatischen Bremseingriffes reduziert wird.Method according to one of the preceding claims, characterized in that at longer absence of recuperation (R), the force (F RB ) of the automatic braking intervention is reduced.
DE201210221003 2012-11-16 2012-11-16 Method for executing wheel brake interference in motor vehicle with electronically controllable brake control system, involves performing automatic wheel brake interference depending on actuation of brake pedal Ceased DE102012221003A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004051530A1 (en) 2004-10-22 2006-05-04 Audi Ag Motor vehicle with a recuperation generator
DE102005039314A1 (en) 2005-08-19 2007-02-22 Robert Bosch Gmbh Recuperation of energy in a hybrid vehicle with a hydraulic or pneumatic brake system
DE102008061821A1 (en) 2008-12-11 2010-06-17 Bayerische Motoren Werke Aktiengesellschaft Method for recuperation of energy in motor vehicle during recuperationable operating condition of motor vehicle, involves converting free energy into electrical or thermal energy
DE102010004436A1 (en) * 2010-01-13 2011-07-14 Bayerische Motoren Werke Aktiengesellschaft, 80809 Motor vehicle, has temporary active electromotive propulsion produced in coasting, where rate of effective brake torque of running speed of vehicle is defined based on electronic control unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004051530A1 (en) 2004-10-22 2006-05-04 Audi Ag Motor vehicle with a recuperation generator
DE102005039314A1 (en) 2005-08-19 2007-02-22 Robert Bosch Gmbh Recuperation of energy in a hybrid vehicle with a hydraulic or pneumatic brake system
DE102008061821A1 (en) 2008-12-11 2010-06-17 Bayerische Motoren Werke Aktiengesellschaft Method for recuperation of energy in motor vehicle during recuperationable operating condition of motor vehicle, involves converting free energy into electrical or thermal energy
DE102010004436A1 (en) * 2010-01-13 2011-07-14 Bayerische Motoren Werke Aktiengesellschaft, 80809 Motor vehicle, has temporary active electromotive propulsion produced in coasting, where rate of effective brake torque of running speed of vehicle is defined based on electronic control unit

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