Control apparatus and control method for automatic transmission

Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine

Reexamination Certificate

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Details

C477S902000, C477S115000, C477S160000, C477S161000, C475S121000, C475S127000, C701S058000, C701S059000

Reexamination Certificate

active

06863640

ABSTRACT:
An ECT-ECU includes an abrupt turbine speed increase learning control circuit which prevents simultaneous release of both a frictional engagement element to be released and a frictional engagement element to be engaged, a tie-up learning control circuit which prevents simultaneous engagement of both the frictional engagement element to be released and the frictional engagement element to be engaged, a determination circuit that determines whether one of tie-up learning control and abrupt turbine speed increase learning control is necessary based on the turbine speed, and a control circuit that prohibits execution of the tie-up learning control unless the number of trips after the abrupt turbine speed increase learning control has been executed is at least equal to a predetermined number, when it has been determined that the tie-up learning control is necessary.

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patent: 2001-21030 (2001-01-01), None

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