Vehicle humidity control apparatus for preventing fogging of windows
AssigneeDiesel Kiki Co., Ltd.
InventorsShinji Sutoh, Toshizo Hara, Takeshi Harada, Masahiro Eda
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Abstract
A sensor (27) is provided to sense the humidity at the inner surface of a window of a vehicle interior. When the sensed surface humidity is above a certain value, the possibility of the window being fogged arises and the proportion of outside air to recirculated air is increased to 100% to reduce the interior humidity. When the surface humidity is above a higher value, the interior air control system (5) is operated to reduce the interior humidity by increasing the amount of inlet air, the inlet air temperature, etc.
Claims5
A vehicle interior humidity control apparatus including window inner surface humidity sensor means for sensing a window inner surface humidity and interior air control means, characterized by comprising:
- system control means responsive to the humidity sensor means for controlling the air control means in such a manner that when the humidity rises above a predetermined humidity value the air control means increases a proportion of outside air in inlet air to a maximum value;
- the air control means further comprising cooling means, the apparatus further comprising air temperature sensor means for sensing an outside air temperature, the system control means being responsive to the temperature sensor means for controlling the air control means in such a manner that when the proportion of outside air is at the maximum value, the humidity is above the predetermined humidity value and the air temperature is above the predetermined temperature value, the cooling means is energized;
- and when the air temperature is below the predetermined temperature value the air control means increases an amount of inlet air.
Dependencies are inferred from the claim text.