| abstract |
An object of the present invention is to enable an engine to be started at the time of switching from an electric running (EV) mode to a hybrid (HEV) mode without a sense of releasing torque and under low shock.n n n When EV → HEV mode switching request with increasing accelerator is started, control is started by mode 2301b at t1, the first clutch transmission torque capacity tTc1 for HEV is increased for driving force control, and the second clutch for EV and HEV slips. Before starting, cranking of the engine is started by dragging of the first clutch. In mode 2301b, the second clutch transmission torque capacity tTc2 is also maintained at the maximum driving force evTmax in the EV mode. T2 is shifted to the mode 2303 at t2 where the second clutch starts to slip, and tTc2 is determined to allow the engine to be started by dragging the first clutch while sliding the second clutch, and tTc1 is the increase in the driving force and the Decide to maintain a stable slip. In mode 2303 it is also controlled to start the engine and the motor / generator torque is determined so that the slip of the second clutch is achieved.n n n n Driving force control, clutch, transmission torque, EV mode, HEV mode |