Control system for automatic transmission for vehicle

Details Control system for automatic transmission for vehicle Control system for automatic transmission for vehicle

1996-01-31

1998-04-14

Ta, Khoi Q.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477142, 74336R, F16H 6116

Patent

active

057386072

ABSTRACT:
In an automatic transmission in which a shifting command can be output by a manual operation of a manual shift lever, in addition to an automatic shifting based on a usual shifting map, the shifting command is possibly executed while preventing an over-revolution and stalling of an engine due to an inappropriate shifting command. If the vehicle speed is in a shifting prohibiting range with a possibility that an over-revolution or stalling of the engine may be caused, when a shifting command is output, the shifting is prohibited, and a timer is set. When the present vehicle speed is translated from the shifting prohibiting range to a shifting permitting range as a result of change in vehicle speed, during counting by the timer, the shifting which has been prohibited is executed.

REFERENCES:
patent: 4817471 (1989-04-01), Tury
patent: 4922769 (1990-05-01), Tury
patent: 5089965 (1992-02-01), Braun
patent: 5416698 (1995-05-01), Hutchison

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