Boots – shoes – and leggings
Patent
1987-08-27
1990-08-28
Lall, Parshotam S.
Boots, shoes, and leggings
74866, 74867, 192 331, B60K 4122
Patent
active
049530909
ABSTRACT:
A hydraulic pressure control system for reducing engagement shock of a frictional element in an automatic transmission, comprises an electromagnetically operated valve for generating a hydraulic pressure supplied to the frictional element, and a control unit for controlling the hydraulic pressure such that the level of the hydraulic pressure generated is adjusted to a target value. In the control unit, the difference in the torque applied to the transmission output shaft owing to a shifting operation is determined, the length of time from the beginning of an inertia phase to the end of the inertia phase is determined, the mean rate of change in the torque of the output shaft during the length of time is determined, and the target value is determined such that the torque on the transmission output shaft varies at the mean rate of change during the inertia phase.
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patent: 4559599 (1985-12-01), Habu et al.
patent: 4582182 (1986-04-01), Takeda et al.
patent: 4667540 (1987-05-01), Yagi
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patent: 4691285 (1987-09-01), Takeda
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patent: 4744031 (1988-05-01), Takeda et al.
patent: 4783743 (1988-11-01), Yashiki et al.
Lall Parshotam S.
Makay Christopher L.
Nissan Motor Co,. Ltd.
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