Automatic transmission control system and method

Details Automatic transmission control system and method Automatic transmission control system and method

1993-03-12

1995-01-17

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

743365, F16H 546

Patent

active

053822021

ABSTRACT:
An control system and method for an automatic transmission are disclosed which are adapted to shift or actuate the gears of the transmission without engine vacuum assistance. A control valve is provided which is variably positionable in response to a pressure signal from a governor to select control positions controlling the flow of hydraulic fluid to the gear shift elements of the transmission. The control valve is biased at a first select control position and is movable in response to the pressure signal from the governor to a second select control position for providing hydraulic fluid to the gear shift elements at a pressure effective for actuating the elements at a preselect vehicle speed. An adjustable position delimiter maintains the control valve at the second preselect control position.

REFERENCES:
patent: 1998274 (1935-04-01), Drabin
patent: 2720793 (1955-10-01), Linsley
patent: 2882743 (1959-04-01), Ebert
patent: 2961884 (1960-11-01), Bauer
patent: 3106104 (1963-10-01), Harry
patent: 3165008 (1965-01-01), Forster
patent: 3448767 (1969-06-01), Wonn
patent: 3599513 (1971-08-01), Buno et al.
patent: 4291595 (1981-09-01), Jelaca
patent: 4331045 (1982-05-01), Piech et al.
patent: 4467674 (1984-08-01), van Deursen et al.
patent: 4468987 (1984-09-01), Miller
patent: 4621544 (1986-11-01), Re
patent: 4827803 (1989-05-01), Miyawaki

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