Range shift control

Details Range shift control Range shift control

1998-04-01

2000-03-28

Estremsky, Sherry L.

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

477124, 477908, 74336R, B60K 4106

Patent

active

060425040

ABSTRACT:
A control for enhanced range shifting in a computer (48) assisted vehicular compound transmission having a main section (16A) shifted by a manually operated shift lever (31) and a range section (16B) shifted in response to operation of a range shift selector, such as sensing shift lever (31) passing through a predetermined actuation point (AR) in the shift pattern. During a compound shift, if the main section is engaged prior to completion of the range shift, the engine is fueled to a synchronous speed for engaging the target ratio (ES=OS*GR.sub.T) and the range section shift is completed without undue wear or damage to the range section synchronized clutch (130).

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