Shift control mechanism in an automatic transmission for vehicle

Details Shift control mechanism in an automatic transmission for vehicle Shift control mechanism in an automatic transmission for vehicle

1981-04-10

1983-12-13

Braun, Leslie A.

Machine element or mechanism

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

Preselected indexed position

74868, 74869, B60K 4104

Patent

active

044199104

ABSTRACT:
A planetary gear transmission changing forward and reverse drives for vehicles comprises one wet-type brake, one wet-type clutch and a planetary gear set, and is controlled by one shift control valve and one solenoid valve operated by an electric control circuit. Hydraulic pressure supplied to the wet-type brake and the wet-type clutch is regulated in independent oil chambers respectively, resulting in effects of accurate hydraulic pressure regulation and simple structure without wrong operation.

REFERENCES:
patent: 4126154 (1978-11-01), McQuinn
patent: 4252148 (1981-02-01), Fochtman et al.
patent: 4253553 (1981-03-01), Yamada et al.
patent: 4290325 (1981-09-01), Nishimura

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