Influence of passenger car auxiliaries on pollutant emission factors within the Artemis model

The impact of the auxiliaries and particularly air conditioning on emissions (CO2, CO, HC, NOx and particles) is investigated. To this aim, various data from European laboratories are used and analysed. Parameters linked to technology and to climatic conditions are investigated. The main distinction is made between gasoline and diesel vehicles. A physical model is proposed to extrapolate the excess emissions at low temperature (below 28 °C) and with solar radiation, together with a statistical model.