System for overriding hold mode operation of an automated transm

Details System for overriding hold mode operation of an automated transm System for overriding hold mode operation of an automated transm

1998-10-27

2000-02-29

Estremsky, Sherry L.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477111, 477115, 477142, 74336R, B60K 4106

Patent

active

060303158

ABSTRACT:
A system for overriding hold mode operation of an automated transmission coupled to an internal combustion engine is provided, wherein the transmission is operable in the hold mode of operation to maintain engagement of a currently engaged transmission gear. A control computer is operable to monitor at least one vehicle operating parameter and determine whether hold mode operation is inappropriate based thereon. If hold mode operation is inappropriate, the control computer is operable to either initiate an automatic upshift to a numerically higher transmission gear or limit engine or vehicle speed to a predefined speed value. In this manner, the system of the present invention is operable to allow hold mode operation only when a legitimate need therefore exists.

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