Patent ID: 6068575
Filing Date: 2000-05-30
Classification: F16H,Y10T

Abstract:
A control apparatus for a hydraulically operated vehicular transmission having a plurality of speed stages to be established by a selective operation of a plurality of hydraulic engaging elements, comprising:means for controlling stepwise speed changing for downshifting one stage at a time such that during downshifting control to one speed stage which is one stage lower, upon receipt of a downshifting command to another speed stage which is one stage lower than said one speed stage, a start of downshifting control to said another speed stage is delayed until the downshifting control to said one speed stage is completed; andmeans for switching a control mode which performs a control to accelerate a time of completion of the downshifting control to said one speed stage, said control being made upon receipt of that downshifting command to said another speed stage which is issued during the downshifting control to said one speed stage, so that a downshifting to said one speed stage is completed earlier in a case where the downshifting command to said another speed stage is issued during the downshifting control to said one speed stage than in a case where the downshifting command to said another speed stage is not issued during the downshifting control to said one speed stage.