Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1996-12-30
1998-09-08
Wright, Dirk
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
F16H 6106
Patent
active
058038663
ABSTRACT:
During transmission shifts, a band brake is used in either a self-loosening direction in which an engaging force thereof is not sensitive to variations in hydraulic pressure or a self-tightening direction in which the engaging force is sensitive to variations in hydraulic pressure. In the self-loosening direction, a second regulated hydraulic pressure generated by a second pressure regulating valve (B-4 control valve) in accordance with a control hydraulic pressure generated by a second (throttle-pressure-control) linear solenoid valve in a margin control region thereof is supplied to a hydraulic servo of the fourth brake (band brake). In this clutch-to-clutch shift, a first regulated hydraulic pressure generated by a first pressure regulating valve (a shift-pressure control valve) in accordance with a control hydraulic pressure generated by a first (pressure-regulation) linear solenoid valve is supplied to a hydraulic servo of a third (UD direct) clutch. In the self tightening direction, the first regulated hydraulic pressure generated by the first pressure regulating valve (the shift-pressure control valve) is supplied to the hydraulic servo of the fourth brake (band brake).
REFERENCES:
patent: 5311795 (1994-05-01), Yoshimura et al.
Hayabuchi Masahiro
Nishida Masaaki
Suzuki Akitomo
Tsukamoto Kazumasa
Yamamoto Yoshihisa
Aisin Aw Co. Ltd.
Wright Dirk
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