System for controlling torque reduction at shifting for...

Details System for controlling torque reduction at shifting for... System for controlling torque reduction at shifting for...

2006-01-31

2006-01-31

Wright, Dirk (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

Reexamination Certificate

active

06991583

ABSTRACT:
A system for controlling a torque reduction at shifting for an automatic transmission is provided with actual gear-ratio detecting means for detecting an actual gear ratio out of input rotation and output rotation of the automatic transmission, and torque-reduction amount computing means for calculating a torque-reduction amount out of a torque-reduction set gain set previously, which is a rate of change of the torque-reduction amount with respect to a change in gear ratio, and the detected actual gear ratio. With this, the start and completion timings of torque-reduction control can be optimized to prevent elongation of shifting. This results in enhancement in the shift quality and in the endurance reliability of a friction material for shifting.

REFERENCES:
patent: 4680988 (1987-07-01), Mori
patent: 5119696 (1992-06-01), Yamaguchi
patent: 5562567 (1996-10-01), Koenig et al.
patent: 5816976 (1998-10-01), Kuroiwa et al.
patent: 63-53388 (1988-10-01), None
patent: 10-47469 (1998-02-01), None
patent: 10-89112 (1998-04-01), None
patent: 10-184410 (1998-07-01), None
U.S. Appl. No. 10/489,959, filed Mar. 18, 2004, Saitou et al.
U.S. Appl. No. 10/490,161, filed Mar. 18, 2004, Inuta.
U.S. Appl. No. 10/489,958, filed Mar. 18, 2004, Saitou.

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