Start ratio engagement control system and method

Details Start ratio engagement control system and method Start ratio engagement control system and method

1993-08-11

1995-01-31

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

With clutch control

477 78, F16H 6108

Patent

active

053855159

ABSTRACT:
A control system and method for a vehicular semi-automatic mechanical transmission system (10) is provided for allowing controller or operator request for a direct downshift into a preselected start ratio, under certain predefined conditions. The direct downshift into the preselected start gear ratio is sequenced such that the target synchronous engine speed (OS*GR) at target gear ratio engagement is substantially equal to a preselected desirable, preferably constant, value for all selectable start ratios.

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