| 摘要 |
<p>A hydraulic brake booster (12) having a housing (100, 200) with a first bore (102) separated from a second bore (104). The first bore (102) retains a power piston (50) and the second bore (104) retains a control valve (60). An input member (30, 30') is connected to the power piston (50) and linked to the control valve (60) by a lever arrangement (80). The first bore (102) is connected by a passage (112) to the second bore (104) that is connected to a source of pressurized supply fluid (24). In responsive to a desired braking force being applied to the input member (30, 30'), the lever arrangement (80) moves the control valve (60) to allow controlled pressurized supply fluid to be communicated from the second bore (104) by way of passage (12) to the first bore (102). The controlled pressurized supply fluid in the first bore (102) acts on the power piston (50) to develop an operational force to effect a brake application. The hydraulic brake booster (12) is characterized by adjustable regulator means (300) connected to the first bore (102) for communicating a proportional reaction signal to the input member (30, 30') that is derived from the controlled pressurized supply fluid to produce a variable gain between the input force applied to the input member (30, 30') by the operator and the operational force developed through the power piston (50) to effect a brake application.</p> |
