Method of and system for gear shift controlling for an automatic

Details Method of and system for gear shift controlling for an automatic Method of and system for gear shift controlling for an automatic

1993-08-20

1996-09-03

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477155, B60K 4106

Patent

active

055519318

ABSTRACT:
An automobile automatic transmission shift control system causes a specific gear shift by locking a first frictional element and unlocking a second frictional element simultaneously. The system delays a commencement of the unlocking of the second frictional element relative to a commencement of the locking of the first frictional element during the specific gear shift while a down control of engine torque is not conducted or when an engine output torque is large.

REFERENCES:
patent: 3747439 (1974-07-01), Uozumi et al.
patent: 3832915 (1974-09-01), Hiramatsu
patent: 4517859 (1985-05-01), Nagaoka et al.
patent: 5235876 (1993-08-01), Minowa

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