Automatic transmission control system

Details Automatic transmission control system Automatic transmission control system

1996-01-30

1997-09-09

Wright, Dirk

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

475127, F16H 6108

Patent

active

056650205

ABSTRACT:
A control system for an automatic transmission having at least a friction coupling element which is coupled with a hydraulic pressure increasing by way of a leveled transitional pressure has an accumulator which discharge a high level of pressure accumulated therein into the fiction coupling element during a gear shift under the condition where the line pressure is low.

REFERENCES:
patent: 4841813 (1989-06-01), Fujiwara et al.
patent: 5184528 (1993-02-01), Mochizuki
patent: 5399131 (1995-03-01), Kamada et al.
Patent Abstracts of Japan, vol. 016, No. 036 (M-1205), 29 Jan. 1992 & JP-A-03 244864 (Toyota Motor Corporation) 31 Oct. 1991 *abstract*.

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