engleski

Emission of diesel powered vehicle under real operating conditions-impact of emissions control system

The conducted research gives an insight into the issue of disproportion of the exhaust emissions of vehicles with diesel engines under the conditions of exploitation concerning the approved values. Under realistic operating conditions, costly failures on emission control systems occur, as a rule, either by replacement of components of questionable quality or by the complete elimination of components. Emissions were measured on 6 different vehicles with Euro 3, 4 and 5 standards, with correct and faulty emission control components. The results obtained show significant increases in NOx emissions of 58% for Euro 5 to 73% for Euro 4 and increases of 228% over homologated values with Cf = 2.1, CO emissions in case of failure increased by 228% at Euro3 up to as much as 781% at Euro5. Guidelines are provided on how to control some parts of the emission control system

vehicle homologation ; exhaust gas emissions ; real driving emissions (RDE) testing procedure ; control system failure ;

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