Method and system of heating cabin of hybrid electric vehicle

摘要

A method and a system of heating a cabin of a hybrid electric vehicle are provided and minimize the operation of a heater and an engine by reducing the demand temperature of coolant taking into account of power of the heater and improve fuel economy accordingly. The method of heating a cabin of a hybrid electric vehicle adjusts temperature of air supplied into the cabin of the vehicle using a heater disposed adjacent to the cabin of the vehicle and coolant supplied from an engine.

主权项

1. A method of heating a cabin of a vehicle that adjusts temperature of air supplied into the cabin of the vehicle using a heater disposed adjacent to the cabin of the vehicle and coolant supplied from an engine, the method comprising:
calculating, by a controller, an allowance power and a demand power of the heater; determining, by the controller, whether the allowance power of the heater is greater than or equal to a minimum power of the heater; calculating, by the controller, a first demand temperature of the coolant that is coolant temperature necessary to currently heat the cabin of the vehicle; determining, by the controller, whether the coolant temperature is less than the first demand temperature of the coolant; and operating, by the controller, the heater when the allowance power of the heater is greater than or equal to the minimum power of the heater and the coolant temperature is less than the first demand temperature of the coolant.