Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1993-07-06
1995-05-16
Wright, Dirk
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477155, 477156, B60K 4106, F16H 4502
Patent
active
054156068
ABSTRACT:
An electrohydraulic control system for an automatic transmission includes planetary gearsets, clutch and brakes that control the condition of the gear components, hydraulically actuated solenoid control valves, electronic sensors connected to a microprocessor, a gear selector mechanism and an overdrive cancel switch. The extent to which a gear ratio change is completed, as represented by the ratio of the current operating gear ratio and the gear ratio associated with gear ratio at the completion of the gear shift, is used as a variable in algorithms executed by the microprocessor to schedule change in state of solenoid operated valve. The state determines the engaged and disengaged condition of friction elements that produce the gear shift.
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U.S.S.N. 927,046 Filed Aug. 10, 1992, entitled "Electronically Controlled Bypass Clutch for a Torque Converter Transmission".
Greene Thomas L.
Kovalsky Mark S.
La Voie Vincent P.
Neigebauer James J.
Oldani Patrick E.
Ford Motor Company
May Roger L.
McKenzie Frank G.
Ta Khoi Q.
Wright Dirk
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