Electronic adaptive swap-shift control for an automatic...

Details Electronic adaptive swap-shift control for an automatic... Electronic adaptive swap-shift control for an automatic...

2007-10-16

2007-10-16

Pang, Roger (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

C477S127000, C701S058000

Reexamination Certificate

active

11462210

ABSTRACT:
A control system and control method for a swap-shift transmission having auxiliary and main gearsets wherein precise synchronization control of ratio changes of each gearset at the start and at the end of a swap-upshift progression is achieved using an adaptive control to adjust friction element pressure values and slip times for friction elements of each gearset, whereby shift synchronization is achieved throughout the operating life of the transmission.

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