Interrelated power delivery controls – including engine control – Transmission control – Including fluid drive
Patent
1992-08-27
1994-09-27
Braun, Leslie A.
Interrelated power delivery controls, including engine control
Transmission control
Including fluid drive
3644241, 477 69, 477159, 477162, F16H 566
Patent
active
053498852
ABSTRACT:
An automatic transmission includes a multi-speed transmission gear mechanism having an input shaft, an output shaft and a plurality of friction coupling elements. A hydraulic control system selectively supplies a hydraulic pressure to the friction coupling elements, thereby selectively applying the friction coupling elements to cause the transmission gear mechanism to shift to a speed which is determined according to a predetermined shift pattern. The control system sets a target hydraulic pressure to be applied to the friction coupling elements according to the kind of the shift to be effected and the engine load, and, when it is detected that the transmission gear mechanism is to make a backout upshift due to reduction in the engine load, increases the target hydraulic pressure by an amount which is determined according to the throttle opening and the turbine speed.
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Abe Mitsutoshi
Fujiwara Takuji
Kurisu Kenji
Sasaki Kazuo
Yoshimura Hiroshi
Braun Leslie A.
Mazda Motor Corporation
Ta Khoi
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