发明名称 Power steering system
摘要 A power steering system includes first and second valve members (40 and 42) which are movable relative to each other to port fluid to a vehicle power steering motor (31) and a pump (24) for providing fluid to the first and second valve members (40 and 42) and the power steering motor. A force transmitting member (116) is connected with the first valve member (40) and movable toward and away from the second valve member (42) for applying a force to resist relative movement between the first and second valve members. A fluid pressure chamber (138) receives fluid from the pump (24), the pressure of which acts on the force transmitting member (116). The first and second valve members (40 and 42) include passages for conducting fluid to the fluid pressure chamber (138). A fixed size bleed orifice (182) conducts fluid from the pressure chamber (138) to a reservoir (32). The orifice (182) restricts the flow of fluid from the chamber (138) to the reservoir (32). A variable speed motor (14) which drives the pump (24) varies the flow rate of fluid to the chamber (138) as a function of vehicle speed to vary the pressure in the chamber.
申请公布号 US5713429(A) 申请公布日期 1998.02.03
申请号 US19950431123 申请日期 1995.04.28
申请人 TRW INC. 发明人 DOOLITTLE, MARC
分类号 B62D5/07;B62D5/083;B62D6/02;(IPC1-7):B62D5/04 主分类号 B62D5/07
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