Regulation of hydraulic pressure in a system having multiple pre

Details Regulation of hydraulic pressure in a system having multiple pre Regulation of hydraulic pressure in a system having multiple pre

1994-08-05

1996-05-07

Lorence, Richard M.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 85R, 60486, F16H 6114, F04B 2304

Patent

active

055137326

ABSTRACT:
A bypass pressure regulator valve, having first and second regulator ports connected to a sump and each port supplied from the output side of a first and second pump, regulates the magnitude of line pressure in response to a control pressure produced by a variable force solenoid. A high pump feed select valve alternately connects the output of the first pump and the sump to the inlet of the second pump. Output from the first pump is directed through a torque converter clutch pressure regulator valve and a converter charge pressure regulator valve to a first inlet of the torque converter causing the torque converter to open and to a second inlet causing the torque converter to close. Hydraulic fluid is directed to lubrication circuits and through a transmission oil cooler.

REFERENCES:
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patent: 2642516 (1953-06-01), Carlson
patent: 3385312 (1968-05-01), Kinnamon et al.
patent: 3535877 (1970-10-01), Becker et al.
patent: 3953153 (1976-04-01), Huber
patent: 4089166 (1978-05-01), Ratliff et al.
patent: 4152894 (1979-05-01), Rumyantsev et al.
patent: 4213511 (1980-07-01), Rubenstein et al.
patent: 4514147 (1985-04-01), Borman et al.
patent: 4819430 (1989-04-01), Becker
patent: 5081837 (1992-01-01), Ueno
patent: 5165862 (1992-11-01), Lindblom

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