DE10213904B4 - Electro-hydraulic brake - Google Patents
Electro-hydraulic brake Download PDFInfo
- Publication number
- DE10213904B4 DE10213904B4 DE2002113904 DE10213904A DE10213904B4 DE 10213904 B4 DE10213904 B4 DE 10213904B4 DE 2002113904 DE2002113904 DE 2002113904 DE 10213904 A DE10213904 A DE 10213904A DE 10213904 B4 DE10213904 B4 DE 10213904B4
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic
- brake
- hydraulic cylinder
- control unit
- brake pedal
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/3255—Systems in which the braking action is dependent on brake pedal data
- B60T8/326—Hydraulic systems
-
- 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
- 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
-
- 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
- B60T8/4086—Systems with stroke simulating devices for driver input the stroke simulating device being connected to, or integrated in the driver input device
Abstract
Elektrohydraulische Bremse mit einem EHB-Hydroaggregat (12) und einem auf ein Steuergerät (42) für dieses einwirkenden Bremspedal (30), wobei das Bremspedal (30) einem Hydraulikzylinder (46) angreift, der über mindestens ein Trennventil (52, 54) und mindestens eine Druckleitung (48, 50) mit dem EHB-Hydroaggregat (12) in Verbindung steht, dadurch gekennzeichnet, daß die Trennventile (52, 54) derart von dem Steuergerät angesteuert werden, daß der Hydraulikzylinder (46) als Aktuator wirkt und einem Fahrer über das Bremspedal (30) Informationen haptisch vermittelbar sind.Battery powered Brake with an EMS hydraulic unit (12) and one on a control unit (42) for this acting brake pedal (30), the brake pedal (30) a hydraulic cylinder (46) who attacks over at least one isolation valve (52, 54) and at least one pressure line (48, 50) with the EMS hydraulic unit (12), thereby characterized that the Isolation valves (52, 54) are controlled by the control device such that the hydraulic cylinder (46) acts as an actuator and provides a driver with information via the brake pedal (30) can be conveyed haptically.
Description
Die Erfindung betrifft eine elektrohydraulische Bremse (EHB) eines Fahrzeuges.The The invention relates to an electro-hydraulic brake (EMS) of a vehicle.
Elektrohydraulische Bremsen sind Bremsen, bei denen an einem Pedal mittels eines Sensors der Bremswunsch eines Fahrers detektiert wird, woraufhin eine mit dem Sensor angesteuerte Steuereinheit über einen Druckgeber (EHB-Hydroaggregat) in einem hydraulischen Bremssystem einen Druck erzeugt, aufgrund dessen die Bremsen einen dem Bremswunsch des Fahrers entsprechenden Bremseingriff durchführen. Als Rückfallebene (Sicherheitspfad) weisen solche Bremsen einen mit dem Bremspedal betätigten Bremszylinder auf, der über Trennventile mit dem Bremssystem verbunden ist, wobei die Trennventile nur dann geöffnet werden, wenn der Sensor oder die Steuereinheit defekt sein sollten, oder die Energieversorgung keine elektrische Energie zur Verfügung stellt.Battery powered Brakes are brakes on a pedal using a sensor the driver's braking request is detected, whereupon one with control unit controlled by the sensor via a pressure transmitter (EMS hydraulic unit) generates pressure in a hydraulic brake system due to which the brakes have a braking intervention corresponding to the driver's braking request carry out. As fallback level (Safety path) such brakes have one with the brake pedal actuated Brake cylinder on the over Isolation valves connected to the brake system, the isolation valves only open if the sensor or control unit is defective, or the energy supply does not provide electrical energy.
Solche elektrohydraulischen Bremsen weisen heutzutage häufig ein Antiblockiersystem (ABS) auf, welches radselektiv den Bremseingriff verringert, wenn eines oder mehrere Räder blockieren sollten. Ferner sind aus der Praxis bei solchen Bremsen elektronische Stabilitätsprogramme (ESP) bekannt, die je nach Fahrzeugsituation einen radselektiven Bremseingriff durchführen, wenn ein solcher zur Vermeidung eines Schleuderns des Fahrzeuges erforderlich sein sollte.Such Electrohydraulic brakes often have an anti-lock braking system these days (ABS), which selectively reduces brake intervention when one or more wheels should block. Furthermore, are in practice with such brakes electronic stability programs (ESP) known, which depending on the vehicle situation a bike-selective Perform brake intervention, if such to avoid skidding of the vehicle should be required.
Neben elektrohydraulischen Bremsen sind aus der Praxis hydraulische Bremsanlagen bekannt, bei denen der Bremswunsch eines Fahrers, der sich durch eine Betätigung des Bremspedals äußert, über eine mechanische oder hydraulische Kopplung an einen Hauptbremszylinder vermittelt wird, mittels dessen die Bremsen des Fahrzeuges über ein hydraulisches System betätigt werden. Auch bei solchen Bremsen sind Antiblockiersysteme und elektronische Stabilitätsprogramme bekannt, die über eine Veränderung des Druckes in dem hydraulischen System einen Bremseingriff herbeiführen.Next In practice, electro-hydraulic brakes are hydraulic brake systems known in which the braking request of a driver, which is characterized by an actuation of the brake pedal expresses a mechanical or hydraulic coupling to a master brake cylinder by means of which the brakes of the vehicle via a hydraulic system actuated become. Even with such brakes are anti-lock braking systems and electronic stability programs known about a change of the pressure in the hydraulic system bring about a brake intervention.
Da zwischen dem Hauptbremszylinder und dem Bremspedal bei hydraulischen Bremsanlagen die oben genannte Kopplung besteht, ist ein Eingriff des Antiblockiersystems am Bremspedal einer herkömmlichen Bremsanlage zu spüren, wodurch einem Fahrer wertvolle Informationen zur Fahrzeugsituation vermittelt werden.There between the master brake cylinder and the brake pedal in hydraulic Braking systems the above coupling is an intervention of the anti-lock braking system on the brake pedal of a conventional brake system, whereby valuable information about the vehicle situation is conveyed to a driver.
Bei elektrohydraulischen Bremsen ist dagegen das Bremspedal von dem restlichen Bremssystem durch die Trennventile hydraulisch entkoppelt, so daß der Fahrer über das Bremspedal keine Informationen bei einem etwaigen Eingriff des Antiblockiersystems erhält.at electro-hydraulic brakes, on the other hand, is the brake pedal of that remaining brake system hydraulically decoupled by the isolating valves, so that the Driver over the brake pedal provides no information in the event of any intervention by the Anti-lock braking system receives.
In
der
Aus WO 00/24602 A2 ist im Zusammenhang mit einer Vorrichtung zur Ansteuerung von zumindest einer elektromechanischen Betriebseinrichtung eines Kraftfahrzeuges bekannt, einen auf ein Bremspedal einwirkenden Elektromotor als Gefühlsgenerator zu verwenden, um dem Fahrer eine haptische Rückmeldung über den Zustand der Bremsanlage zu liefern. Diese Vorrichtung ist jedoch technisch sehr aufwendig.Out WO 00/24602 A2 is in connection with a device for control of at least one electromechanical operating device Known motor vehicle, an electric motor acting on a brake pedal as a feeling generator to give the driver a haptic feedback about the condition of the brake system to deliver. However, this device is technically very complex.
Der Erfindung liegt die Aufgabe zugrunde, eine elektrohydraulische Bremse sowie ein Verfahren zur Betätigung einer elektrohydraulischen Bremse zur Verfügung zu stellen, bei denen mit geringem technischen Aufwand Informationen über das Bremspedal haptisch vermittelbar sind.The The invention has for its object an electro-hydraulic brake and a method of actuation to provide an electro-hydraulic brake in which with little technical effort haptic information about the brake pedal are communicable.
Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den Merkmalen der Ansprüche 1 bzw. 6.The solution this object is achieved according to the invention with the features of claims 1 and 6th
Gemäß der Erfindung ist bei einer elektrohydraulischen Bremse mit einem Hydraulikzylinder vorgesehen, daß die Trennventile derart von der Steuereinrichtung angesteuert werden, daß der Hydraulikzylinder als Aktuator wirkt und einem Fahrer über das Bremspedal Informationen haptisch vermittelbar sind. Dadurch ist es mit geringem technischen Aufwand, nämlich ohne zusätzliche Bauelemente, ausschließlich durch die Gestaltung der Steuereinrichtung und deren Ansteuerung der Trennventile möglich, bei einer elektrohydraulischen Bremse Informationen haptisch zu vermitteln.According to the invention, in the case of an electrohydraulic brake with a hydraulic cylinder, it is provided that the isolating valves are actuated by the control device in such a way that the hydraulic cylinder acts as an actuator and information can be conveyed haptically to a driver via the brake pedal. This is it is possible to convey information haptically with an electrohydraulic brake, with little technical effort, namely without additional components, exclusively through the design of the control device and its activation of the isolating valves.
Vorzugsweise wird der Hydraulikzylinder durch ein insbesondere getaktetes Öffnen der Trennventile der hydraulischen Rückfallebene des EHB-Hydroaggregates betätigt. Dadurch wird ohnehin vorhandenen hydraulischen Aggregaten eine Zusatzfunktion zugewiesen, so daß eine solche Anlage sehr kostengünstig ist.Preferably the hydraulic cylinder is opened by, in particular, clocked Isolation valves of the hydraulic fallback level of the EHB hydraulic unit actuated. As a result, existing hydraulic units become an additional function assigned so that a such system very inexpensive is.
Gemäß einer besonders bevorzugten Ausführungsform erfolgt die Betätigung des Aktuators durch ein EHB-Steuergerät, welches die Funktionalität eines ABS-Steuergerätes und/oder eines ESP-Steuergerätes mit aufweist. Auf diese Weise ist eine unmittelbare Information des Fahrers gewährleistet.According to one particularly preferred embodiment the actuation takes place of the actuator by an EMS control unit, which has the functionality of a ABS control unit and / or an ESP control unit with has. This is an immediate information guaranteed by the driver.
Wenn zur Betätigung des Aktuators ein Softwaremodul vorgesehen ist, mit welchem eine Bewertung durchgeführt wird, so daß nicht jeder Eingriff des ABS-Steuergerätes und/oder des ESP-Steuergerätes zu einer haptischen Information des Fahrers führt, kann eine Reizüberflutung des Fahrers verhindert werden. Dies gilt insbesondere, wenn das Softwaremodul mindestens eine der Bewertungen gemäß Tabelle 1 ausführt.If for actuation of the actuator, a software module is provided with which a Evaluation carried out will, so not any intervention by the ABS control unit and / or the ESP control unit leads to haptic information for the driver, an overstimulation of stimuli of the driver can be prevented. This is especially true if that Software module at least one of the ratings according to the table 1 executes.
Das erfindungsgemäße Verfahren gemäß Anspruch 6, bei dem bei einem Bremseingriff eines EHB-Steuergerätes mit ABS- und/oder ESP-Funktionalität durch das Öffnen von Ventilen zu einem Hydraulikzylinder über ein Bremspedal einem Fahrer Informationen haptisch vermittelt werden, zeigt ebenfalls die oben beschriebenen Vorteile, so daß für das Verfahren auch selbständig Schutz beansprucht wird.The inventive method according to claim 6, in the case of a brake intervention by an EMS control unit with ABS and / or ESP functionality through opening from valves to a hydraulic cylinder via a brake pedal to a driver Information described haptically is also shown in the above Advantages, so for the procedure also independently Protection is claimed.
Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen sowie aus der Zeichnung im Zusammenhang mit der Beschreibung.Further result in advantageous refinements and developments of the invention itself from the subclaims and from the drawing in connection with the description.
Es zeigen:It demonstrate:
Die
in den
Um
gefährliche
Fahrsituationen zu vermeiden ist ein EHB-Steuergerät
Um
an den Fahrer Informationen haptisch vermitteln zu können, ist
der als Teil eines Sicherheitspfades an dem Bremspedal
Ein
Druckaufbau in dem Hydraulikzylinder
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10262003A DE10262003B4 (en) | 2002-03-28 | 2002-03-28 | Electrohydraulic brake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10262003A DE10262003B4 (en) | 2002-03-28 | 2002-03-28 | Electrohydraulic brake |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10213904A1 DE10213904A1 (en) | 2003-10-23 |
DE10213904B4 true DE10213904B4 (en) | 2004-10-28 |
Family
ID=33038712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002113904 Expired - Fee Related DE10213904B4 (en) | 2002-03-28 | 2002-03-28 | Electro-hydraulic brake |
Country Status (1)
Country | Link |
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DE (1) | DE10213904B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108349462A (en) * | 2015-09-12 | 2018-07-31 | 通用汽车环球科技运作有限责任公司 | Non-hydraulic reponse system for the vehicle with simulating brake device pedal |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009016638A1 (en) | 2008-04-24 | 2009-10-29 | Continental Teves Ag & Co. Ohg | Multi-circuit electrohydraulic motor vehicle brake system and operating method thereto |
DE102016217144A1 (en) | 2016-09-08 | 2018-03-08 | Audi Ag | Method for impressing haptic information feedback on a brake pedal |
DE102017213620A1 (en) * | 2017-08-04 | 2019-02-07 | Bayerische Motoren Werke Aktiengesellschaft | Brake system for a motor vehicle |
DE102018204347A1 (en) * | 2018-03-21 | 2019-09-26 | Audi Ag | Method for supporting a driver of a motor vehicle and driver assistance system |
US10800389B2 (en) * | 2018-08-31 | 2020-10-13 | Robert Bosch Gmbh | Haptic feedback for decoupled brake system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000024602A2 (en) * | 1998-10-27 | 2000-05-04 | Continental Teves Ag & Co. Ohg | Device for controlling at least one electromechanic operating device in a motor vehicle |
DE10015714A1 (en) * | 2000-03-29 | 2001-10-04 | Bayerische Motoren Werke Ag | Electromechanical vehicle braking system |
-
2002
- 2002-03-28 DE DE2002113904 patent/DE10213904B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000024602A2 (en) * | 1998-10-27 | 2000-05-04 | Continental Teves Ag & Co. Ohg | Device for controlling at least one electromechanic operating device in a motor vehicle |
DE10015714A1 (en) * | 2000-03-29 | 2001-10-04 | Bayerische Motoren Werke Ag | Electromechanical vehicle braking system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108349462A (en) * | 2015-09-12 | 2018-07-31 | 通用汽车环球科技运作有限责任公司 | Non-hydraulic reponse system for the vehicle with simulating brake device pedal |
Also Published As
Publication number | Publication date |
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DE10213904A1 (en) | 2003-10-23 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |