Automatic transmission system for vehicles

Details Automatic transmission system for vehicles Automatic transmission system for vehicles

1989-09-26

1990-12-18

Lorence, Richard

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

74866, 74877, 3644241, B60K 4128

Patent

active

049779923

ABSTRACT:
In an electronically controlled automatic transmission system including a gear transmission and a clutch, in which a target gear position is determined in accordance with map data for gear-shift control, it is discriminated whether or not the vehicle is in accelerating condition and necessary control for shifting up the transmission to the target gear position is carried out only when the vehicle is not in the accelerating state. Thus, when the driver presses hard on an accelerating member to accelerate the vehicle, a series operations for shifting up is not carried out, whereby the transmission is kept in its present gear position. The operation for shifting up can be carried out after the completion of the acceleration of the vehicle.

REFERENCES:
patent: 4350057 (1982-09-01), Kishi et al.
patent: 4591038 (1986-05-01), Asagi et al.
patent: 4635508 (1987-01-01), Tatsumi
patent: 4638690 (1987-01-01), Hattori et al.
patent: 4643048 (1987-02-01), Hattori et al.
patent: 4718309 (1988-01-01), Moriya
patent: 4823643 (1989-04-01), Koshizawa

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