Electronic shift controller for a multiple ratio automotive tran

Details Electronic shift controller for a multiple ratio automotive tran Electronic shift controller for a multiple ratio automotive tran

1993-05-25

1995-01-24

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477146, 477147, F16H 6108

Patent

active

053838254

ABSTRACT:
An automatic transmission mechanism having multiple ratio gearing and clutch and brake elements operated by fluid pressure operated servos for changing speed ratio in the transmission and a controller for actuating and releasing the clutches and brakes in response to operating demands determined by sensed variables such as vehicle speed, engine torque, manual valve position, transmission turbine speed, and engine temperature, and means for achieving improved control of a synchronous downshift event by electronically regulating the exhaust pressure from an off-going friction element of the clutch and brake structure, thus controlling the torque-carrying capacity of that off-going element during the downshift interval.

REFERENCES:
patent: 4476747 (1984-10-01), Kawamoto
patent: 4674364 (1987-06-01), Shindo et al.
patent: 4727773 (1988-03-01), Sumiya et al.
patent: 4796490 (1989-01-01), Butts et al.
patent: 4805750 (1989-02-01), Nitz
patent: 4875391 (1989-10-01), Leising et al.
patent: 4938097 (1990-07-01), Pierce
patent: 4989477 (1991-02-01), Hunter et al.
patent: 5029087 (1991-07-01), Cowan et al.
patent: 5029494 (1991-07-01), Lentz et al.
patent: 5038636 (1991-08-01), Vukovich et al.
patent: 5086670 (1992-02-01), Nitz et al.
patent: 5092199 (1992-03-01), Goto et al.
patent: 5111717 (1992-05-01), Takeuchi et al.
patent: 5113343 (1992-05-01), Hunter et al.
patent: 5150297 (1992-09-01), Daubenmier et al.
patent: 5157608 (1992-10-01), Sankpal et al.
"The All-Adaptive Controls For The Chrysler Ultradrive Transaxle", by Maurice B. Leising et al, Chrysler Motors Corporation Article No. 890529, pp. 45-53.

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