Patent ID: 8755962

Claim:
An engine start control device for a hybrid vehicle that includes an engine, a first clutch, a motor/generator, a second clutch, and driving wheels arranged in order of a transmission path and can select electric travel only with the motor/generator or hybrid travel with cooperation of the engine and the motor/generator, through engaging and disengaging control of the first and second clutches, the engine start control device comprising: a first engine start system that engages the first clutch and starts the engine with the motor/generator; a second engine start system that starts the engine with a starter motor; and an engine start system selecting unit that selects engine start control using the first engine start system if a rotation speed information relating to the electric travel is lower than a predetermined speed and engine start control using the second engine start system if the rotation speed information is the predetermined speed or higher, wherein: the rotation speed information is a vehicle speed, and the predetermined vehicle speed is a vehicle speed when an electric travel driving force generated by an electric travel torque part obtained by subtracting an engine start torque part required for starting the engine from a rated torque of the motor/generator is smaller than a sum of a running resistance and a predetermined acceleration margin part of the vehicle.