| 摘要 |
PURPOSE:To enable to realize the change-over between inside air circulation and outside air taking-in matched to rider sensation by a method wherein the detection level of an outside air impurity detector is changed in response to vehicular speed at the air conditioner, in which the inside air circulation is changed-over from and to the outside air takking-in by detecting outside air impurity and vehicular speed. CONSTITUTION:The output of the concentration detecting sensor 4 of the noxious gas in the air outside the vehicle and the output of a vehicular speed sensor 10 are inputted through an A/D converter 5 to a microcomputer 6. When the automatic changing-over switch 9a of an automatic air conditioner 9 is put into operation, the detection level of the gas sensor 4 in response to vehicular speed is calculated with the microcomputer 6 and set to high level at low vehicular speed and to low level at high vehicular speed. After that, the microcomputer 6 calculates the relative output value of the gas sensor 4 in order to operate an inside air-outside air change-over damper 2 by means of an electromechanical actuator 8 based upon the calculated result of said relative output value. The change-over matched to rider sensation is realized by changing the detection level of the outside air impurity in respose to vehicular speed in such a manner as described above. |
