| 摘要 |
The present invention relates to an air conditioning system for a vehicle, which controls the time point of turning on and off an air conditioner regarding not only the TD value but also the internal external air mode status, the external air temperature, and the target discharge temperature to more precisely control the time point of turning on and off the air conditioner and to minimize the operation of the air conditioner within the scope without a decrease in the cooling performance inside a vehicle and remarkably improve the fuel efficiency of the vehicle. To achieve this purpose, the present invention comprises: a control unit which processes the external air temperature inputted by each sensor, internal temperature, quantity of sunlight, discharge air temperature inside the vehicle, and the user setting temperature inputted by a temperature control switch to calculate the TD value and the target discharge temperature, and to automatically control the air conditioner, heater, temp door, interior door, and mode door according to the calculated TD value and target discharge temperature; and an internal and external air mode detecting means to detect whether the air suction mode is the internal mode or the external mode. The control unit compares the calculated TD value and preset standard index value to control the turning on and off of the air conditioner by the size, and controls the time point of turning on and off the air conditioner regarding the internal and external air mode inputted by the internal and external air mode detecting means, the external air temperature inputted by the external air sensor, and the calculated current target discharge temperature. |
