Electronically controlled power shift transmission

Details Electronically controlled power shift transmission Electronically controlled power shift transmission

1997-09-02

2000-01-04

Ta, Khoi Q.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477126, 477906, F16H 6120

Patent

active

060104279

ABSTRACT:
An electronically controlled power shift transmission for a vehicle includes an oil pressure source which generates oil pressure, a clutch which is adapted to be engaged to move the vehicle when oil pressure is supplied to the clutch, a shift valve which is movable between a first position in which oil pressure is supplied to the clutch and a second position in which oil pressure to the clutch is cut off, and a solenoid valve for changing the position of the shift valve. The shift valve drains the oil pressure in the clutch when the shift valve cuts off the oil pressure supplied to the clutch.

REFERENCES:
patent: 4111071 (1978-09-01), Pearce et al.
patent: 4898050 (1990-02-01), Sakai
patent: 5437204 (1995-08-01), Person
patent: 5622080 (1997-04-01), Furukawa
patent: 5649880 (1997-07-01), Tsutsui et al.

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