Interactive gear engagement

Details Interactive gear engagement Interactive gear engagement

2006-08-08

2006-08-08

Pang, Roger (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

C477S113000, C477S098000

Reexamination Certificate

active

07086988

ABSTRACT:
A vehicle powertrain has an engine coupled to an electronically-controlled automatic transmission. A method for controlling the vehicle powertrain during a transmission shift from a neutral gear to a drive gear detects a change in a signal indicative of a desired transmission gear change from a neutral gear to a drive gear. An engine idle speed is reduced by a predetermined RPM in response to the change in the signal. The transmission is shifted from the neutral gear into the drive gear upon the engine idle speed being reduced by the predetermined RPM.

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