| 摘要 |
PURPOSE:To save an engine fuel consumption by configurating a device in such a way that, when a cooling effect is greater than a reference value with a dehumidification switch turned on, an engine is suspended permitting a blow- off electric motor to be driven, and the said condition is maintained until a humidification heating switch is turned on. CONSTITUTION:The degree of a cooling effect of an evaporator 16 is detected as a value of temperature detected by a sensor 28, and is inputted into a comparator 52. The comparator 52 compares the detected temperature 28 with a reference value, and outputs either a frost condition signal 57A or a defrost condition signal 57B through a flip-flop 56. And when the frost condition signal 57A is outputted with a dehumidification heating manual switches 30 and 31 turned on, an engine 10 is suspended through a speed controlling device 26 allowing a blow-off electric motor 38 to be driven. In addition, this condition is maintained while a signal for the defrost condition 57B is being outputted until either humidification heating switches 32 and 33 or a ventilating switch 34 are actuated. This configuration is capable of saving the engine fuel consumption. |
