IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0935194
(2009-01-27)
|
등록번호 |
US-8510009
(2013-08-13)
|
우선권정보 |
DE-10 2008 000 873 (2008-03-28) |
국제출원번호 |
PCT/EP2009/050882
(2009-01-27)
|
§371/§102 date |
20101015
(20101015)
|
국제공개번호 |
WO2009/118208
(2009-10-01)
|
발명자
/ 주소 |
- Willmann, Karl-Heinz
- Senger, Karl-Heinz
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
The invention relates to a vehicle braking system, the slip of which can be regulated electronically, for which, in the event of an automatic braking process, the activation of the foot pedal by the driver, does not result in a significant actuating path. The driver therefore disadvantageously perce
The invention relates to a vehicle braking system, the slip of which can be regulated electronically, for which, in the event of an automatic braking process, the activation of the foot pedal by the driver, does not result in a significant actuating path. The driver therefore disadvantageously perceives different pedal actuating characteristics in the foot actuated and automatic braking operations. According to the invention, a method is proposed for controlling a vehicle braking system, the slip of which is regulated electronically, and with which pedal actuating characteristics, which are largely uniform in the different operating states of the vehicle braking system can be produced. To achieve this, a valve unit is controlled in such a way that a pressure medium flows from the wheel brake to the pressure medium reservoir and the drive motor of the pressure generator is controlled in parallel.
대표청구항
▼
1. A method for controlling an electronically slip-controllable vehicle brake system, including: a master cylinder actuatable at least indirectly by a driver, a brake circuit, connected to the master cylinder, and having at least one wheel brake;an electronic control unit;a valve unit, triggerable b
1. A method for controlling an electronically slip-controllable vehicle brake system, including: a master cylinder actuatable at least indirectly by a driver, a brake circuit, connected to the master cylinder, and having at least one wheel brake;an electronic control unit;a valve unit, triggerable by the electronic control unit, for modulating the brake pressure at a wheel brake of the vehicle brake system;a pressure generator, which is actuatable by a drive motor that is triggerable by the control unit;at least one sensor element, detecting an actuation of the master cylinder; anda pressure fluid reservoir, which is disposed between the valve unit for modulating the brake pressure in the wheel brakes and the intake side of the pressure generator,the method comprising the steps of:detecting an automatic braking event;detecting actuation of the master cylinder during the automatic braking event;upon detecting the actuation of the master cylinder during an automatic braking event, triggering at least one valve unit for modulating the brake pressure in a wheel brake in such a way that pressure fluid flows out of the wheel brake into the pressure fluid reservoir; andtriggering in parallel with the at least one valve unit, the drive motor of the pressure generator to control the pressure drop at the wheel brake. 2. The method as defined by claim 1, wherein by the electronic control unit, the triggerings of the valve unit and of the drive motor of the pressure generator are adapted to one another in such a way that a vehicle deceleration is established, which corresponds to a maximum value of a vehicle deceleration corresponding to the actuation of the master cylinder or to a prevailing vehicle deceleration before the actuation of the master cylinder. 3. The method as defined by claim 2, wherein the valve unit for modulating the brake pressure of a wheel brake includes at least one proportional valve triggerable by the control unit. 4. The method as defined by claim 3, wherein only valve units for modulating the brake pressure of the wheel brakes of one axle of the vehicle, preferably the rear axle of the vehicle, are triggered. 5. The method as defined by claim 2, wherein the brake circuit includes a plurality of wheel brakes and associated valve units modulating the brake pressure of the wheel brake, each valve unit including at least one switching valve triggerable in clocked fashion relative to the valve units of the other wheel brakes triggerable by the control unit. 6. The method as defined by claim 2, wherein the valve unit for modulating the brake pressure of a wheel brake includes a pressure buildup valve hydraulically preceding the wheel brake and a pressure reduction valve downstream of the wheel brake. 7. The method as defined by claim 2, wherein only valve units for modulating the brake pressure of the wheel brakes of one axle of the vehicle, preferably the rear axle of the vehicle, are triggered. 8. The method as defined by claim 1, wherein by the electronic control unit, the triggerings of the valve unit and of the drive motor of the pressure generator are adapted to one another in such a way that a vehicle deceleration corresponding to the actuation of the master cylinder is established. 9. The method as defined by claim 8, wherein the valve unit for modulating the brake pressure of a wheel brake includes at least one proportional valve triggerable by the control unit. 10. The method as defined by claim 9, wherein only valve units for modulating the brake pressure of the wheel brakes of one axle of the vehicle, preferably the rear axle of the vehicle, are triggered. 11. The method as defined by claim 8, wherein the brake circuit includes a plurality of wheel brakes and associated valve units modulating the brake pressure of the wheel brake, each valve unit including at least one switching valve triggerable in clocked fashion relative to the valve units of the other wheel brakes triggerable by the control unit. 12. The method as defined by claim 8, wherein the valve unit for modulating the brake pressure of a wheel brake includes a pressure buildup valve hydraulically preceding the wheel brake and a pressure reduction valve downstream of the wheel brake. 13. The method as defined by claim 8, wherein only valve units for modulating the brake pressure of the wheel brakes of one axle of the vehicle, preferably the rear axle of the vehicle, are triggered. 14. The method as defined by claim 1, wherein the valve unit for modulating the brake pressure of a wheel brake includes at least one proportional valve triggerable by the control unit. 15. The method as defined by claim 14, wherein the valve unit for modulating the brake pressure of a wheel brake includes a pressure buildup valve hydraulically preceding the wheel brake and a pressure reduction valve downstream of the wheel brake. 16. The method as defined by claim 14, wherein only valve units for modulating the brake pressure of the wheel brakes of one axle of the vehicle, preferably the rear axle of the vehicle, are triggered. 17. The method as defined by claim 1, wherein the brake circuit includes a plurality of wheel brakes and associated valve units modulating the brake pressure of the wheel brake, each valve unit including at least one switching valve triggerable in clocked fashion relative to the valve units of the other wheel brakes triggerable by the control unit. 18. The method as defined by claim 17, wherein the valve unit for modulating the brake pressure of a wheel brake includes a pressure buildup valve hydraulically preceding the wheel brake and a pressure reduction valve downstream of the wheel brake. 19. The method as defined by claim 1, wherein the valve unit for modulating the brake pressure of a wheel brake includes a pressure buildup valve hydraulically preceding the wheel brake and a pressure reduction valve downstream of the wheel brake. 20. The method as defined by claim 1, wherein only valve units for modulating the brake pressure of the wheel brakes of one axle of thevehicle, preferably the rear axle of the vehicle, are triggered.
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