Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1979-03-19
1981-04-28
Husar, C. J.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74864, 74869, B60K 2100
Patent
active
042638267
ABSTRACT:
A multispeed transmission having an automatic shift control system having an automatic shift valve which is biased for upshift by a force increasing with output speed of the transmission and is biased for downshift by a force increasing concurrently with torque demand, to provide upshifts at speeds increasing with torque demand and downshifts at lower speeds. The shift valve controls the supply of shift fluid pressure to the ratio-engaging devices to establish low and high ratio drives. A regulator valve increases the shift fluid pressure with an increasing lagging torque demand signal. A modulator valve is controlled by an engine fuel feed or throttle to provide a concurrent torque demand signal pressure concurrent with throttle movement for the shift valve. The lagging torque demand signal is more concurrent with engine torque and power, such as the gasifier pressure of a gas turbine engine, or the supercharger pressure of an internal combustion engine. The transmission is shifted immediately in response to torque demand, and the shift pressure is proportional to the engine torque and speed at the time of the shift.
REFERENCES:
patent: 3237404 (1966-03-01), Flanigan et al.
patent: 3583154 (1971-06-01), Utter
patent: 3587355 (1971-06-01), Schaefer
patent: 3593599 (1971-07-01), Dach
patent: 3674121 (1972-07-01), Copeland
patent: 3691872 (1972-09-01), Schaefer et al.
patent: 3800629 (1974-04-01), Lentz
patent: 4018316 (1977-04-01), McQuinn et al.
patent: 4030381 (1977-06-01), Lalin et al.
patent: 4036083 (1977-07-01), McQuinn
patent: 4047454 (1977-09-01), McQuinn
patent: 4105100 (1978-08-01), Iijima
Fuehrer Reece R.
Hartz James F.
Thompson Elton L.
General Motors Corporation
Heiter A. M.
Husar C. J.
McKenzie Frank
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