Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1997-06-27
1998-10-27
Bonck, Rodney H.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
475128, 477 77, 477119, 192 358, F16H 6106, F16H 6108
Patent
active
058271538
ABSTRACT:
An apparatus for controlling an automatic transmission of a motor vehicle which is shifted to a non-drive position with a releasing action of a hydraulically operated frictional coupling clutch upon operation of a manually operated member from a drive position to a non-drive position, the apparatus including a non-drive shift detecting device for detecting a non-drive shifting operation of the manually operated member from the drive position to the non-drive position, a rapid pressure reduction device operated upon detection of the non-drive shifting operation for rapidly reducing a pressure of the hydraulically operated frictional coupling device to a predetermined pressure level, and a continuous pressure reduction device for continuously reducing the pressure of the frictional coupling device from the predetermined pressure level at a predetermined reduction rate.
REFERENCES:
patent: 4457411 (1984-07-01), Hiramatsu
patent: 4724727 (1988-02-01), Shibayama et al.
patent: 4870581 (1989-09-01), Ito et al.
patent: 5072390 (1991-12-01), Lentz et al.
patent: 5558599 (1996-09-01), Tsukamoto et al.
Kimura Hiromichi
Yasue Hideki
Bonck Rodney H.
Estremsky Sherry Lynn
Toyota Jidosha & Kabushiki Kaisha
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