Automatic transmission having hydraulic and electronic control s

Details Automatic transmission having hydraulic and electronic control s Automatic transmission having hydraulic and electronic control s

1984-12-06

1987-06-23

Herrmann, Allan D.

Machine element or mechanism

Gearing

Interchangeably locked

192092, 74866, F16H 314, B60K 4110, B60K 4118

Patent

active

046743456

ABSTRACT:
A transmission which is controlled by an electronic control unit for gear shift operation, said transmission comprising a shift actuator including a plurality of shift shafts for effecting engagement and disengagement of the transmission gears to accomplish a plurality of shift ranges and the same number of cylinders each being operatively connected with respective one of said shift shafts, said shift actuator being controlled by the signals from the electronic control unit for effecting the gear shift operation.
Each of said shift shafts is operatively connected with a respective piston disposed in each cylinder by means of a select lever assigned to the piston and the shift shaft. The shift shafts axially move to engage and disengage the transmission gears. The cylinders are disposed parallel or coaxial with the shift shafts.

REFERENCES:
patent: 1903635 (1933-04-01), Saives
patent: 2026827 (1936-01-01), Dillon
patent: 3530668 (1970-09-01), Siebers et al.
patent: 3667577 (1972-06-01), Weymann
patent: 3876033 (1975-04-01), Shore
patent: 3944013 (1976-03-01), La Pointe
patent: 3945265 (1976-03-01), Bell et al.
patent: 4194608 (1980-03-01), Usui et al.
patent: 4445393 (1984-05-01), Braun
patent: 4475637 (1984-10-01), Oguma et al.
patent: 4493228 (1985-01-01), Vukovich et al.
patent: 4531433 (1985-07-01), Suga
patent: 4579015 (1986-04-01), Fukui

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