| abstract |
When engine start control and automatic transmission downshift control are executed repeatedly, each control is executed at an appropriate timing to suppress shift shock. When the engine start control and the downshift control of the automatic transmission 18 are executed repeatedly when a request to increase the drive torque is made during EV traveling, the completion of the engagement of the engine connecting / disconnecting clutch K0 is a starting point. As shown, the transmission input rotational speed N IN is started to change in rotation toward the post-shift synchronous rotational speed N IN a, so that the completion of the engagement of the engine connecting / disconnecting clutch K0 is determined when the transmission input torque T AT rises. and caught, it is allowed to proceed for downshift (inertia phase) in response to the rising edge of the transmission input torque T AT from completion of engagement of the engine disconnecting clutch K0. |