Interrelated power delivery controls – including engine control – Transmission control – Including fluid drive
Patent
1994-09-07
1996-01-02
Marmor, Charles A.
Interrelated power delivery controls, including engine control
Transmission control
Including fluid drive
477 65, 477 80, F16H 6114
Patent
active
054803632
ABSTRACT:
An apparatus for controlling a lock-up clutch disposed between an engine and an automatic transmission of a motor vehicle, including a slip control device for controlling a slip control pressure to be applied to the lock-up clutch to control the amount of slip of the lock-up clutch, a shift detector for detecting a shifting action of the transmission during deceleration of the vehicle, and a pressure changing device which commands the slip control device, upon detection of a shifting action of the transmission during vehicle deceleration, to change the slip control pressure a predetermined time prior to completion of the shifting action, for reducing an engaging force of the lock-up clutch to a value lower than a value corresponding to the amount of slip of the lock-up clutch established when the transmission is not in the process of a shifting action, to reduce the shifting shock of the transmission.
REFERENCES:
patent: 5010990 (1991-04-01), Yoshimura et al.
patent: 5115896 (1992-05-01), Noguchi et al.
patent: 5265499 (1993-10-01), Soka et al.
Iwatsuki Kunihiro
Matsubara Toru
Jensen Nathan O.
Marmor Charles A.
Toyota Jidosha & Kabushiki Kaisha
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