초록 ▼

Method and system for predicting air discharge temperature in a control system which controls an automotive HVAC (heating, ventilation and air conditioning) system using a model. The model is based on signals generated by various climate control sensors and actuation outputs to predict air discharge

Method and system for predicting air discharge temperature in a control system which controls an automotive HVAC (heating, ventilation and air conditioning) system using a model. The model is based on signals generated by various climate control sensors and actuation outputs to predict air discharge temperature without the need for an additional sensor. The model allows the avoidance of uncomfortable air discharge temperatures to thereby increase passenger comfort.

대표청구항 ▼

[ We claim:] [1.] A method for predicting air discharge temperature in a control system which, in turn, controls a heating, ventilation and air conditioning (HVAC) system of a vehicle which discharges a parcel of air to a passenger cabin of the vehicle, the system including a variable speed blower,

[ We claim:] [1.] A method for predicting air discharge temperature in a control system which, in turn, controls a heating, ventilation and air conditioning (HVAC) system of a vehicle which discharges a parcel of air to a passenger cabin of the vehicle, the system including a variable speed blower, means for carrying air temperature, ducting, actuators including a blend door having control positions for controlling the direction of air flow and the ratio of fresh air to recirculated air and sensors for sensing temperature within the cabin and ambient temperature, the method comprising the steps of:sensing temperature of the means for varying air temperature;determining speed of the blower;determining a control position of the blend door;determining temperature of the parcel of air prior to interaction with the means for varying air temperature;determining at least one interaction time of the parcel of air with the means for varying air temperature based on the speed of the blower; andcalculating the temperature of the parcel of air discharged to the passenger cabin based on: (1) the at least one interaction time, (2) the temperature of the means for varying air temperature, (3) the control position of the blend door, and (4) the temperature of the parcel of air prior to interaction with the means for varying air temperature.