Method and apparatus for controlling discharged-air temperature for vehicular air-conditioning system
First Claim
1. A method for controlling discharged-air temperature for a vehicular air-conditioning system including an upper outlet disposed at an upper position for discharging air into a passenger'"'"'s compartment and a lower outlet disposed at a lower position for discharging air into said passenger'"'"'s compartment, said method comprising the steps of:
- inputting a desired temperature setting together with environmental conditions including an interior air temperature and an exterior air temperature;
calculating a target discharged-air temperature on the basis of said environmental conditions and said desired temperature setting;
selecting one of operation modes including a cooling operation mode, an air blowing operation mode, and a heating operation mode, on the basis of said calculated target discharged-air temperature;
calculating an estimated discharged air temperature in said selected operation mode;
judging whether or not said estimated discharged-air temperature is not lower than a reference temperature setting; and
performing air-mixing control to adjust temperature of air discharged from said upper outlet only when said estimated discharged-air temperature is not lower than said reference temperature setting.
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Accused Products
Abstract
Disclosed is a system for controlling discharged-air temperature for a vehicular air-conditioning system, comprising a duct, a cooling medium circuit, a heating medium circuit, an air-mixing unit, and an automatic air-conditioning ECU. The automatic air-conditioning ECU performs air-mixing control for cold air and hot air by means of the air-mixing unit to adjust the temperature of air discharged from a face outlet into a passenger'"'"'s compartment only when an estimated discharged-air temperature in an operation mode is not lower than a reference temperature setting.
18 Citations
7 Claims
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1. A method for controlling discharged-air temperature for a vehicular air-conditioning system including an upper outlet disposed at an upper position for discharging air into a passenger'"'"'s compartment and a lower outlet disposed at a lower position for discharging air into said passenger'"'"'s compartment, said method comprising the steps of:
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inputting a desired temperature setting together with environmental conditions including an interior air temperature and an exterior air temperature; calculating a target discharged-air temperature on the basis of said environmental conditions and said desired temperature setting; selecting one of operation modes including a cooling operation mode, an air blowing operation mode, and a heating operation mode, on the basis of said calculated target discharged-air temperature; calculating an estimated discharged air temperature in said selected operation mode; judging whether or not said estimated discharged-air temperature is not lower than a reference temperature setting; and performing air-mixing control to adjust temperature of air discharged from said upper outlet only when said estimated discharged-air temperature is not lower than said reference temperature setting. - View Dependent Claims (2)
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3. An apparatus for controlling discharged-air temperature for a vehicular air-conditioning system, comprising:
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a duct including an upper outlet disposed at an upper position for discharging air into a passenger'"'"'s compartment and a lower outlet disposed at a lower position for discharging air into said passenger'"'"'s compartment; a cooling medium circuit for cooling air by means of heat exchange effected between a cooling medium and said air flowing through said duct; a heating medium circuit for heating air by means of heat exchange effected between a heating medium and said air flowing through said duct; an air-mixing unit disposed in said duct, for adjusting a ratio between an airflow amount which makes a passage through said heating medium circuit and an airflow amount which makes a detour to avoid said heating medium circuit; a calculating unit for calculating a target discharged-air temperature on the basis of a desired temperature setting and inputted environmental conditions including an interior air temperature and an exterior air temperature; an operation mode selecting unit for selecting one of operation modes including a cooling operation mode, an air blowing operation mode, and a heating operation mode, on the basis of said target discharged-air temperature; and a temperature control unit for calculating an estimated discharged-air temperature in said selected operation mode, and performing air-mixing control for cold air and hot air by means of said air-mixing unit to adjust temperature of air discharged from said upper outlet only when said estimated discharged-air temperature is not lower than a reference temperature setting. - View Dependent Claims (4, 5, 6, 7)
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Specification