Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Patent
1997-12-23
2000-09-19
Cuchlinski, Jr., William A.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
701 53, 180336, 477 15, 477 34, 477 69, G06G 770, G06F 1500
Patent
active
061225835
ABSTRACT:
A control valve system for a multiple ratio transmission with a high ratio clutch and an intermediate ratio brake servo including a first solenoid operated valve that generates a control pressure for intermediate servo apply and a second solenoid operated valve that generates a control pressure for intermediate servo release and for the high clutch. The second and the first solenoid valves control the intermediate servo stroke phase and the second solenoid valve controls, either closed or open loop, the deceleration of a high clutch drum. Pressures electronically controlled by the solenoid valves are distributed to the clutch and brake servo pressure chambers by a shift valve configuration, whereby high quality upshifts and downshifts are achieved.
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Crandall Scott Raymond
Haase Robert Cary
Kirchhoffer Johann
Cuchlinski Jr. William A.
Ford Global Technologies Inc.
Hernandez Olga
May Roger L.
McKenzie Frank G.
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