Vehicle heating and/or air conditioning system has sensor to register state of air filter linked to module which sets filter condition display

摘要

The vehicle heating and/or air conditioning installation has an adsorption air filter (5) and a system to determine the condition of the filter by at least one characteristic parameter. The detection system has a sensor (4) to register dirt, which is a significant component of the filter clogging and/or measure the filter saturation. The sensor generates at least one signal representative of the filter blockage component. A module (M) adds or cumulates the sensor signals for a display (A) to indicate the state of the filter (5). A measured component is NOx and especially NO, COx and especially CO, and NO2.