| 摘要 |
PURPOSE:To save energy in an automobile air-conditioning device in which a cooling compressor is driven by an engine, by controlling the compressor in accordance with a comparison signal of a room temperature with respect to a comparison reference signal relating to air-conditioning, and an engine load detection signal. CONSTITUTION:A computing and processing signal generating circuit 1 computes a comparison reference signal D in accordance with sensor signals C1 through Cn and set signals A, B, and delivers the same to a signal comparing circuit 2 and a turn-on inhibiting signal F to a compressor turn-on inhibiting circuit 4. The signal comparing circuit 2 compares the reference signal D with a room temperature signal Cn, and if Cn>D or Cn<D, a high level or a low level signal is transmitted to a control signal output means 5. Meanwhile, the compressor turn-on inhibiting circuit 4 judges whether a compressor can be turned on or not in accordance with a signal K from an engine load detecting circuit 3, and delivers a signal I. The control signal output means 5 delivers a compressor control signal J in accordance with signals G, I. With this arrangement, it is possible to aim at saving energy. |
