Startup control device and startup control method for hybrid vehicle

A startup control device for a hybrid vehicle which includes an engine, a traveling motor disposed between the engine and driving wheels, a high power battery arranged to supply a power to the traveling motor, a clutch disposed between the engine and the, traveling motor and arranged to be engaged when a hydraulic pressure is supplied, and a starter arranged to rotationally drive a crank shaft of the engine, and thereby to start the engine, the startup control device comprising:

• a controller comprising:
• a vehicle temperature sensor configured to sense a temperature of the vehicle;
• and
• a vehicle startup controller configured to select one of vehicle startup modes of a first vehicle startup mode in which the vehicle is brought to a travelable state by the traveling motor, a second vehicle startup mode in which the vehicle is brought to the travelable state by engaging the clutch, and starting the engine by the traveling motor, and a third vehicle startup mode in which the vehicle is brought to the travelable state by engaging the clutch after the engine is started by the starter, at least based on the temperature of the vehicle when a request of the startup of the vehicle is sensed,
• wherein the vehicle startup controller is configured to select the second vehicle startup mode in a low temperature state in which the temperature of the vehicle is equal to or smaller than at least a first temperature judgment value when the request of the startup of the vehicle is sensed, and to select the third vehicle startup mode in an extremely low temperature state in which the temperature of the vehicle is equal to or smaller than a second vehicle temperature judgment value which is smaller than the first temperature judgment value when the request of the startup of the vehicle is sensed.