发明授权
- 专利标题: Closed loop control for transmission shift fork position
- 专利标题(中): 传动换档位置的闭环控制
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申请号: US920744申请日: 1992-06-01
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公开(公告)号: US5233878A公开(公告)日: 1993-08-10
- 发明人: Donald Klemen , Joseph H. Hunter
- 申请人: Donald Klemen , Joseph H. Hunter
- 申请人地址: MI Detroit
- 专利权人: General Motors Corporation
- 当前专利权人: General Motors Corporation
- 当前专利权人地址: MI Detroit
- 主分类号: F16H61/28
- IPC分类号: F16H61/28 ; F16H61/00 ; F16H63/20 ; F16H63/30
摘要:
A hydraulic closed loop control for positioning a transmission shift rail and synchronizer fork has recesses on the rail and ports in a valve body in which the rail is disposed. Fluid flow between the ports as permitted by the rail recesses controls the position of valves which in turn control the position of the rail. The valves control the position of the rail by routing pressurized fluid to one of two opposing sides of a piston fixed to the rail in response to the flow of fluid from the valve body ports. The pressurized fluid moves the rail to a desired position with the flow of pressurized fluid being interrupted when that position is reached.