Hybrid drive device

A hybrid drive device, comprising:

• an engine;
• a motor-generator;
• an output portion that outputs torque to a drive wheel;
• a differential mechanism having a plurality of rotating elements that are differentially rotatable with respect to one another, the engine being joined to one of the plurality of rotating elements, the motor-generator being joined to another one of the plurality of rotating elements, and the output portion being joined to yet another one of the plurality of rotating elements;
• a selectable one-way clutch comprising a rotating member that can receive a reaction torque of an engine torque of the engine and that is provided to the differential mechanism, and that can be changed over between:
• a locked mode in which, in the state of receiving the reaction torque, positive rotation of the rotating member is prevented, while negative rotation of the rotating member in the direction opposite to the positive rotation is permitted;
• and a free mode in which, in the state of receiving the reaction torque, the positive rotation and the negative rotation of the rotating member are both permitted;
• and
• a control device that changes over the selectable one-way clutch from the free mode to the locked mode when predetermined condition is satisfied;
• wherein the control device keeps the selectable one-way clutch in the free mode if a combustion anomaly that is accompanied by a reduction in the engine torque of the engine has occurred, or if a device anomaly that is associated with such a combustion anomaly has occurred.