Vehicle hydraulic brake system operating with power assistance
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60T-008/32
B60T-008/48
B60T-008/60
B60T-013/12
출원번호
US-0454331
(1995-06-16)
우선권정보
DE-4340467 (1993-11-27)
국제출원번호
PCT/DE94/01287
(1994-11-02)
§371/§102 date
19950616
(19950616)
국제공개번호
WO-9514595
(1995-06-01)
발명자
/ 주소
Winner Hermann (Karlsruhe DEX) Gaillard Alain (Karlsruhe DEX)
출원인 / 주소
Robert Bosch GmbH (Stuttgart DEX 03)
인용정보
피인용 횟수 :
30인용 특허 :
0
초록▼
The invention relates to a vehicle hydraulic brake system with a twin-circuit emergency brake pressure source which can be put into operation by a pedal and with wheel brakes which can be supplied from this emergency brake pressure source through emergency brake main conduits and with a power-assist
The invention relates to a vehicle hydraulic brake system with a twin-circuit emergency brake pressure source which can be put into operation by a pedal and with wheel brakes which can be supplied from this emergency brake pressure source through emergency brake main conduits and with a power-assisted brake device which has a power source, and, between the latter and the at least one wheel brake, at least one valve arrangement generates brake pressures and also reduces brake pressure using a pressure medium from the power source. At least one valve arrangement is installed between the emergency brake pressure source and the wheel brakes and, in emergency brake operation, this valve arrangement connects the emergency brake pressure source to the wheel brakes and, in power-assisted brake operation, separates the emergency brake pressure source from the wheel brakes. This valve arrangement is designed in such a way that in power-assisted brake operation, the valve arrangement permits pressure medium which has to be drained from wheel brakes to escape to a reservoir of the emergency brake pressure source through the emergency brake main conduits and a return conduit. This valve arrangement can be controlled by a small control force and is therefore of low cost. The vehicle brake system is suitable for motor vehicles.
대표청구항▼
A vehicle hydraulic brake system which comprises a twin circuit emergency brake pressure source which can be put into operation by a pedal, wheel brakes which can be supplied from the emergency brake pressure source, emergency brake main conduits laid as a twin circuit and extending from the emergen
A vehicle hydraulic brake system which comprises a twin circuit emergency brake pressure source which can be put into operation by a pedal, wheel brakes which can be supplied from the emergency brake pressure source, emergency brake main conduits laid as a twin circuit and extending from the emergency brake pressure source to the wheel brakes and with a power-assisted brake device which can be controlled electrically by means of the pedal, said brake device has at least one fluid pump which can be supplied from a reservoir, a power reservoir which can be charged by said at least one pump, and at least one controllable first valve arrangement (29, 30) per brake circuit, for the selection of a brake pressure source, between the emergency brake pressure source and wheel brakes and said brake device has at least one electrically controllable second valve arrangement (37, 38, 39, 40, 37a, 37b, 37c), for brake pressure setting, a required brake pressure value generator (35) which can be controlled by means of the pedal, and a control unit (36) connected to the required brake pressure value generator (35), said control unit (36) controls the at least one second valve arrangement (37, 38, 39, 40, 37a, 37b, 37c in order to generate brake pressures from the energy of the power source and to change these brake pressures, wherein the at least one first valve arrangement (29, 30) for selecting the brake pressure sources (6, 23) is arranged to open the associated emergency brake main conduits (12, 13) to a return conduit (59) which leads to the reservoir (7), wherein the at least one second valve arrangement (37, 38, 39, 40, 37a, 37b, 37c) is connected to the emergency brake main conduits (12, 13) and at least one of the wheel brakes (8, 9, 10, 11) to set brake pressures while relaying a pressure medium from the power source (23) and is arranged in such a way that said at least one second valve arrangement connects the emergency brake main conduits (12, 13) to the wheel brakes (8, 9, 10, 11) when no electrical current is applied to the at least one electromagnet (71, 73, 83) and separates the wheel brakes (8, 9, 10, 11) from the power source (23) and, in power-assisted brake operation, connects the wheel brakes (8, 9, 10, 11) to the power source (23) for the purpose of a brake pressure increase and to the emergency brake main conduits (12, 13), which can be opened to the reservoir (7), for the purpose of brake pressure reduction.
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이 특허를 인용한 특허 (30)
Worsdorfer Karl-Friedrich,DEX ; Poertzgen Gregor,DEX ; Kingston Andrew,DEX ; Weigert Thomas,DEX, Actuation unit for an electronically controlled vehicle brake system.
Ohkubo, Masayasu; Nakamura, Kiyoharu; Sakai, Akira; Soejima, Shinichi; Shimura, Amane, Apparatus for increasing brake cylinder pressure by controlling pump motor and reducing the pressure by controlling electric energy applied to control valve.
Subramanian Viswanathan ; Lloyd Earl Wayne ; Reuter David Fredrick ; Cornwell William Dale ; Patel Sanjay Manilal, Brake control system with an isolation valve.
Nakanishi Nobuyasu,JPX ; Yamada Akiyoshi,JPX ; Shimizu Satoshi,JPX ; Aizawa Hideyuki,JPX ; Hara Masahiro,JPX, Brake force control apparatus accurately detecting an amount of brake operation intended by a vehicle operator.
Kagawa, Kazunori; Matsuki, Kimihiro; Miyazaki, Tetsuya; Kawahata, Fumiaki; Otomo, Akihiro; Nakamura, Eiji, Braking pressure control apparatus capable of switching between two brake operating states using power-operated and manually operated pressure sources, respectively.
Campau Gregory P. ; Kingston Andrew W.,DEX ; Ferger Robert L.,DEX ; Weigert Thomas,DEX ; Oliveri Salvatore,DEX ; Ganzel Blaise J. ; Luckevich Mark S., Electronic brake management system with manual fail safe.
Heckmann Hans,DEX ; Winner Hermann,DEX ; Schunck Eberhardt,DEX ; Gaillard Alain,DEX, Method and device for regulating the pressure in at least one wheel brake.
Akihiro Otomo JP, Pump device wherein detection of failure of one of pumps causes a change in the manner of control of the pump or pumps to compensate for the failure.
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