Vehicle powertrain, controller thereof, and method for controlling vehicle powertrain

摘要

When a hybrid ECU determines that a malfunction in which a moment-adding flywheel cannot be connected to an engine occurs, an engine ECU controls a rotational speed of the engine to a value higher than that in a normal operation. Further, when the hybrid ECU determines that a malfunction in which the moment-adding flywheel cannot be disconnected from the engine occurs, a control is executed so that a ratio of a torque of a first motor to a torque of the engine is higher than that in the normal operation.