Patent Document ID: 20150336567
Application ID: 14115490
Patent Flag: 0

Claim One:
1. A control device for a hybrid vehicle, comprising: an engine; a motor-generator; an output for transmitting torque to drive wheels; a differential mechanism that links together the engine and the motor-generator; and a lock mechanism that is capable of changing over the state of the differential mechanism between a differentiating state in which a torque of the engine is split and distributed between the motor-generator and the output unit, and a non-differentiating state in which the splitting of the torque of the engine between the motor-generator and the output unit is stopped; that is applied to a hybrid vehicle which is capable of implementing; an EV mode in which, with the state of the differential mechanism being the differentiating state, combustion by the engine is stopped; a differentiating mode in which, with the state of the differential mechanism being the differentiating state, rotation of the engine is continued; and a non-differentiating mode in which, with the state of the differential mechanism being the non-differentiating state, rotation of the engine is continued; and that stops combustion by the engine and changes over to the EV mode, when a predetermined condition becomes valid during implementation of the differentiating mode or of the non-differentiating mode; and wherein the predetermined condition for transiting to the EV mode is set to be more severe during implementation of the non-differentiating mode, as compared with the case during implementation of the differentiating mode.