发明公开
EP0106842A4 SPEED SENSITIVE POWER STEERING PUMP UNLOAD VALVE.
失效
GESCHWINDIGKEITSABHÄNGIGESENTLASTUNGSVENTILFÜRSERVOLENKUNG。
- 专利标题: SPEED SENSITIVE POWER STEERING PUMP UNLOAD VALVE.
- 专利标题(中): GESCHWINDIGKEITSABHÄNGIGESENTLASTUNGSVENTILFÜRSERVOLENKUNG。
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申请号: EP82901682申请日: 1982-04-16
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公开(公告)号: EP0106842A4公开(公告)日: 1984-07-18
- 发明人: DUFFY JAMES J
- 申请人: FORD MOTOR CO , FORD WERKE AG , FORD FRANCE , FORD MOTOR CO
- 专利权人: FORD MOTOR CO,FORD WERKE AG,FORD FRANCE,FORD MOTOR CO
- 当前专利权人: FORD MOTOR CO,FORD WERKE AG,FORD FRANCE,FORD MOTOR CO
- 优先权: US8200486 1982-04-16
- 主分类号: B62D5/04
- IPC分类号: B62D5/04 ; B62D5/07 ; B62D6/02 ; F04C14/00 ; F04C14/26 ; B62D5/08 ; F04B49/06 ; F04B49/08
摘要:
A positive displacement pump for a vehicle power steering system comprising a rotor (42) rotatable in and cooperating with a stator (20) to define a pump cavity (52), (54), inlet and outlet ports (56), (58) and (34), (36) communicating with the pump cavity and a flow control valve (96) located in the flow delivery circuit wherein provision is made for opening the flow delivery ciruit to a bypass circuit (72) upon an increase in the speed of the vehicle beyond a design point thereby reducing the pump back pressure and power usage which results in incrased "road feel" at increased speeds while maintaining normal power assist during steering maneuvers at low speeds.
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