| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent shift shock from being caused by gear-shift operation when a lower gear ratio position is selected, while improving efficiency of energy. <P>SOLUTION: A control device for controlling a transmission apparatus includes: an input member to be drive-coupled to an engine and a rotary electric machine; an output member to be drive-coupled to a wheel; and a transmission mechanism having a plurality of frictional engaging elements to change rotation speed of the input member to be output to the output member. When the transmission mechanism selects a lower gear ratio position in a negative-torque estimation state where an input torque value is estimated to be negative after the lapse of a determination reference time, on the basis of a change in input torque to be input to the input member, the control device executes special transmission control to reduce a release-side hydraulic pressure to cause a release-side element to slip, and maintain the slip state of the release-side element throughout a transmission process. <P>COPYRIGHT: (C)2012,JPO&INPIT |
