| 摘要 |
PURPOSE:To stably control the temperature inside a vehicle by setting the target value of the cooling capacity according to the thermal load of the vehicle so as to interrupt or continue operation of an air cooling equiment according to the error between the target value and the actual cooling capacity. CONSTITUTION:Three resistors of an internal air sensor 1, an open air sensor 2 and a set value resistor 3 which are connected in series with each other are provided for detecting thermal load of a vehicle, generating a combined resistance which is sent to a control circuit 4. The circuit 4, on the other hand, receives the output signals of a solar light radiation sensor 5, another internal air sensor 6 and a supply air sensor 7 which detects the temperature of cooling air. Based on said combined resistance, the control circuit 4 selects one among a plurality of predetermined modes and according to the mode, a solenoid clutch 14 is electrified under control of the circuit 4 in such a way that the operation of a compressor 14A is interrupted or continued so as to keep the difference between the temperature of suction air in the vicinity of DELTAt. |
