| 摘要 |
The present invention relates to a system for controlling a passenger-compartment heating and air-conditioning unit in a motor vehicle, consisting in introducing air into the passenger compartment via a motorised fan unit 20, the temperature of this air being adjusted, by making it pass over a heating element 4 or over a refrigeration element 31 and in controlling the motorised fan unit and the refrigeration element 31 using an electronic control module 6 driven by a passenger-compartment temperature probe 72 and an external temperature probe 71, characterised by the fact that it consists in controlling the minimum speed of the motorised fan unit when the temperature of the passenger compartment is below a reference value, in measuring the heat exchange in the passenger compartment by measuring the temperature of the passenger compartment at two successive intervals and in increasing the speed of the motorised fan unit as soon as the calculated temperature difference reaches a threshold A. <IMAGE>
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