Hydraulic control system for automatic transmission

Details Hydraulic control system for automatic transmission Hydraulic control system for automatic transmission

1985-01-07

1987-09-08

Herrmann, Allen D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74867, B60K 4104

Patent

active

046915940

ABSTRACT:
A hydraulic control system for an automatic transmission which includes first and second throttle valves which produce respectively first and second throttle pressures related to the position of a throttle valve in an intake path of an engine. The first and second throttle pressures are different from each other. The first throttle pressure is used for controlling a line pressure and the second throttle pressure serves as a control pressure for shift valves.

REFERENCES:
patent: 3683721 (1972-08-01), Vozumi
patent: 3949627 (1976-04-01), Murakami
patent: 4023444 (1977-05-01), Murakami
patent: 4050332 (1977-09-01), Taga
patent: 4106369 (1978-08-01), Taga
patent: 4145937 (1979-03-01), Shindo et al.
patent: 4391166 (1983-07-01), Kubo et al.
patent: 4406181 (1983-09-01), Kubo et al.
patent: 4437358 (1984-03-01), Kubo et al.
patent: 4570511 (1986-02-01), Nishimura et al.

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