Actuator unit for an electronically controlled vehicle brake system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60T-008/44
출원번호
US-0122864
(2002-04-15)
우선권정보
DE-0050862 (1999-10-21)
발명자
/ 주소
Schaust, Karlheinz
Muller, Jens Hauke
출원인 / 주소
Lucas Varity GmbH
대리인 / 주소
MacMillan, Sobanski & Todd, LLC
인용정보
피인용 횟수 :
4인용 특허 :
14
초록▼
Actuator unit for a hydraulic vehicle brake system, with a master brake cylinder in which a first piston, which can be displaced by an actuator, is disposed, a first brake circuit which can be connected by a valve arrangement in a basic position to the master brake cylinder or separated from the lat
Actuator unit for a hydraulic vehicle brake system, with a master brake cylinder in which a first piston, which can be displaced by an actuator, is disposed, a first brake circuit which can be connected by a valve arrangement in a basic position to the master brake cylinder or separated from the latter thereby in an actuating position, and a device which can be connected to a hydraulic chamber of the master brake cylinder to simulate the brake pedal behaviour, wherein a second piston is disposed in a displaceable manner in the master brake cylinder, wherein the displacement of one piston causes the displacement of the other piston, wherein the device for simulating the brake pedal behaviour is switched to an active or inactive mode through the displacement.
대표청구항▼
1. Actuator unit for an electronically controlled hydraulic vehicle brake system, with a master brake cylinder in which a first piston, which can be displaced by an actuator, is disposed, a first brake circuit which can be connected by a first valve arrangement in a basic position to the master
1. Actuator unit for an electronically controlled hydraulic vehicle brake system, with a master brake cylinder in which a first piston, which can be displaced by an actuator, is disposed, a first brake circuit which can be connected by a first valve arrangement in a basic position to the master brake cylinder or separated from the latter thereby in an actuating position, and a device which can be connected to a hydraulic chamber of the master brake cylinder to simulate a brake pedal behavior, wherein a second piston is disposed in a displaceable manner in the master brake cylinder and the displacement of one piston causes the displacement of the other piston, wherein the device for simulating the brake pedal behavior is switched to an active or inactive mode through the displacement. 2. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 1, characterized in that the two pistons define with one another and with a wall of the master brake cylinder a first and second hydraulic chamber, wherein hydraulic fluid is held in these hydraulic chambers. 3. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 2, characterized in that the second piston also comprises a duct leading from one of the hydraulic chambers to a lateral outlet, wherein a fluid connection to the device for simulating the brake pedal behavior is disposed such that, depending on the position of the second piston, it is aligned with the lateral outlet of the duct when the first brake circuit is separated from the master brake cylinder by the first valve arrangement. 4. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 1, characterized in that the device for simulating the brake pedal behaviour comprises a spring arrangement which is set up to act against the hydraulic pressure from the master brake cylinder, and a characteristic modelling device is also associated with this device. 5. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 4, characterized in that the characteristic modelling device is disposed between the master brake cylinder and the device for simulating the brake pedal behaviour. 6. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 4, characterized in that the characteristic modelling device is disposed in one of the pistons in the master brake cylinder, preferably in a flow path between one of the hydraulic chambers and the lateral outlet of the second piston. 7. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 4, characterized in that the characteristic modelling device is disposed between the device for simulating the brake pedal behaviour and a hydraulic reservoir. 8. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 1, characterized in that the device for simulating the brake pedal behaviour is formed by a cylinder/piston arrangement, in which a piston is loaded by a spring arrangement. 9. Actuator unit for an electronically controlled hydraulic vehicle brake system according to claim 6, wherein the characteristic modelling device is disposed in the flow path between one of the hydraulic chambers and the lateral outlet of the second piston.
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이 특허에 인용된 특허 (14)
Worsdorfer Karl-Friedrich,DEX ; Poertzgen Gregor,DEX ; Kingston Andrew,DEX ; Weigert Thomas,DEX, Actuation unit for an electronically controlled vehicle brake system.
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.
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.
Schliebe Paul M. ; Darnell Charles ; Hornback Edward R. ; Lowman Clark E., Structure for mounting a cluster of pressure sensors upon an electro-hydraulic brake system control unit.
Linden, Christoph, Hydraulic pressure generator for a vehicle brake system, vehicle brake system having such a hydraulic pressure generator, and method for operating the hydraulic pressure generator.
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