| 摘要 |
<p>An opening range of the air-mix door divides into three ranges on the basis of the relationship between the change ratio of opening of the door and the change ratio of the discharge air temp. In the range where the change ratio of the discharge air temp. is great, the voltage applied to the air-mix control motor is changed over to a low voltage and in the range where the change ratio of the discharge air temp. is small, the voltage applied to the air-mix control motor is changed over to a high voltage. Where the change ratio of the discharge air temp. w.r.t. the change of opening of the air-mix door is great, changing of the air-mix door can be prevented.</p> |
