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公开(公告)号：EP1569833B1
公开(公告)日：2007-01-24
申请号：EP03812423.6
申请日：2003-09-26
IPC分类号： B60T13/14
CPC分类号： B60T13/145
摘要： A hydraulic brake booster (12) for use in a brake system (10) having a housing (100) with a power piston (50) located in a first bore (102) and a control valve (60) located in a second bore (104). An input member (30) is connected to the power piston (50) and linked to the control valve (60) by a lever arrangement (200). The input member (30) is characterized by a cylindrical body (300) with a shaft (302) attached thereto and a bracket (32) with a radial opening (35) that is carried by the shaft (302). The bracket (32) is urged toward a head (310) on the shaft (302) by a spring (304). The lever arrangement (200) is characterized by a first lever (202) with a first end (204) pivotally secured in the housing (100) by a first pin (206) and a second end (208) located in the radial opening (35) of the bracket (32) and a second lever (220) that is pivotally secured at a fulcrum point (230) on the first lever (202) by a second pin (228).
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公开(公告)号：EP1569833A1
公开(公告)日：2005-09-07
申请号：EP03812423.6
申请日：2003-09-26
IPC分类号： B60T13/14
CPC分类号： B60T13/145
摘要： A hydraulic brake booster (12) for use in a brake system (10) having a housing (100) with a power piston (50) located in a first bore (102) and a control valve (60) located in a second bore (104). An input member (30) is connected to the power piston (50) and linked to the control valve (60) by a lever arrangement (200). The input member (30) is characterized by a cylindrical body (300) with a shaft (302) attached thereto and a bracket (32) with a radial opening (35) that is carried by the shaft (302). The bracket (32) is urged toward a head (310) on the shaft (302) by a spring (304). The lever arrangement (200) is characterized by a first lever (202) with a first end (204) pivotally secured in the housing (100) by a first pin (206) and a second end (208) located in the radial opening (35) of the bracket (32) and a second lever (220) that is pivotally secured at a fulcrum point (230) on the first lever (202) by a second pin (228).
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公开(公告)号：EP1569834A1
公开(公告)日：2005-09-07
申请号：EP03812425.1
申请日：2003-09-30
CPC分类号： B60T8/3265 , B60T8/441 , B60T13/145 , B60T13/686
摘要： A brake booster (11, 83) amplifies driver brake pedal input into an output force and travel for operating a master cylinder. A power unit (55, 129) builds and stores high pressure fluid to provide boost. Inlet (59, 133, 139) and outlet (81, 135) solenoid valves regulate pressurized fluid to the amplifying mechanism. In one embodiment, a single boost chamber (21) provides fluid pressure to operate the master cylinder and to provide a brake pressure indicative opposing force to driver input. One travel sensor (29) monitors the position and movement of an input rod and piston (23), and a second travel sensor (31) monitors the position and movement of an output piston (15). An ECU (63, 143) monitors system parameters and controls a motor pump (77), inlet (59, 133) and outlet (81, 135, 139) valves and peripherals. In another embodiment, the opposing force to the brake pedal input is provided by a separate pressure fluid chamber (111) located within and movable with the output piston (87). Boost chamber pressure and, optionally, output piston travel are monitored to provide a braking force indication. An ECU (143) monitors system parameters including input travel (115) and boost chamber pressure (141), and controls the inlet (133, 139) and outlets valves (135) and peripherals.
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