SYSTEM FOR CONTROLLING TEMPERATURE OF INTERNAL COMBUSTION ENGINE

摘要

This system for controlling the temperature of an internal combustion engine used in a hybrid vehicle is provided with: a coolant circulation circuit (20) for circulating engine (10) coolant; a main pump (21) for circulating coolant, the main pump (21) being provided to the coolant circulation circuit (20); a heater core (54a) for increasing the temperature of coolant using a heat pump cycle (60) as the heat source, the heat pump cycle (60) being disposed in an air conditioning device (5) for controlling the temperature of ventilation air blown into the vehicle interior; and a control device (100) for controlling the actuation of the engine (10) and the air conditioning device (5). The control device (100) actuates the engine (10) when the remaining capacity of the battery has fallen below a lower limit capacity for travel. A pre-warming process for increasing the temperature of the engine (10) coolant is furthermore carried out using the heater core (54a) when the remaining capacity is low and prior to the remaining capacity falling below the lower limit capacity for travel. Accordingly, cold starts in an internal combustion engine can be reduced in a hybrid vehicle.