| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device for an automatic transmission capable of suppressing shifting shock due to pull-in while suppressing recovery shock by properly setting start timing of shifting torque increase control at downshift. <P>SOLUTION: The automatic transmission AT attaining a plurality of speed stages by switching engaged states of friction elements for transmitting torque from an engine Eng to a driving wheel is equipped with a step S1 of carrying out learning correction of an engagement command pressure of the frictional elements at downshift of a next time on the basis of a separated state of an actual physical quantity and a target physical quantity at downshift of this time, a step S3 of carrying out fuel recovery control of temporarily raising the torque of the engine Eng at start expected timing of a torque phase preset by time control of a shifting transit period during downshift, and a learning convergence determination step S2 of prohibiting torque increase control until it is determined that shifting pressure learning correction is converged and allowing torque increase control when it is determined that the shifting pressure learning correction is converged. <P>COPYRIGHT: (C)2011,JPO&INPIT |
