Adaptive correction of inappropriate shift in automatic transmis

Details Adaptive correction of inappropriate shift in automatic transmis Adaptive correction of inappropriate shift in automatic transmis

1992-11-19

1993-08-31

Harvey, Jack B.

Boots, shoes, and leggings

74866, B60K 4106

Patent

active

052414779

ABSTRACT:
An adaptive correction of an inappropriate shift operation is disclosed. During a power-off upshift, a variation in output torque of the transmission output shaft is detected. A decision is made based on this output torque variation whether or not the power-off 1-2 upshift has been effected in a predetermined appropriate manner, and a timing at which an on-coming friction device to be engaged during the power-off upshift is corrected based on the decision made. Thus, the shift operation during the next occurrence of a power-off upshift of the same type is effected in the appropriate manner.

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