发明授权
US4633738A Control valve system for a four speed ratio automatic transmission
including a dual range regulator valve for controlling independently
two upshift ratio changes
失效
用于四速比自动变速箱的控制阀系统，包括用于独立控制两个升档比变化的双量程调节阀
- 专利标题： Control valve system for a four speed ratio automatic transmission including a dual range regulator valve for controlling independently two upshift ratio changes
- 专利标题（中）： 用于四速比自动变速箱的控制阀系统，包括用于独立控制两个升档比变化的双量程调节阀
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申请号： US756627申请日： 1985-07-19
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公开(公告)号： US4633738A公开(公告)日： 1987-01-06
- 发明人: Frank W. Timte
- 申请人： Frank W. Timte
- 申请人地址： MI Dearborn
- 专利权人： Ford Motor Company
- 当前专利权人： Ford Motor Company
- 当前专利权人地址： MI Dearborn
- 主分类号： F16H3/62
- IPC分类号： F16H3/62 ; B60W10/00 ; B60W10/02 ; B60W10/04 ; B60W10/10 ; F16H61/06 ; F16H61/08 ; F16H61/10 ; F16H61/12 ; B60K41/16
摘要：
A control system for a four speed ratio automatic transmission wherein a ratio change from a first speed ratio to a second speed ratio is effected by a 1-2 shift valve that activates a fluid pressure operated second ratio clutch and a ratio change from a third speed ratio to a fourth speed ratio is effected by a 3-4 shift valve that activates a fluid pressure operated fourth ratio brake, both the clutch and the brake having an independent pressure accumulator and an accumulator pressure regulator valve that is common to both accumulators for developing unique accumulator control pressures whereby the system may be calibrated for maximum shift smoothness for both 1-2 upshifts and 3-4 upshifts.