Gaseous Emissions from Euro 3 Motorcycles and Euro 5 Passenger Cars Measured Over Different Driving Cycles

Regulated gaseous emissions from two Euro 3 motorcycles and three Euro 5 passenger cares were measured over different driving cycles. The purpose of this study was to get data on typical emission levels and patterns of motorcycles and passenger cars currently circulating on the road in Europe. In respect to this, three driving cycles were selected: the current type approval driving cycles used to certify the test vehicles for emissions (NEDC for passenger cars and the EDC for motorcycles) and the world-wide harmonized driving cycle for motorcycles (WMTC). The gaseous emissions (NOx, HC, CO and CO2) were measured using the typical type approval test procedure for light duty vehicles. Since all the vehicles tested had been certified using the relevant current legislative cycle (i.e. NEDC or EDC), these vehicles were clearly not optimized for the WMTC cycle. This means that the emissions measured over the WMTC may be considered closer to real world driving emissions allowing a more realistic comparison between the tested passenger cars and motorcycles. In addition to the emission bag-values, the second by second emission concentration values measured at the tailpipe outlet were recorded, allowing the analysis of the emission patterns and in particular of the importance of the cold start in respect to the distance specific emissions. In general, HC and CO emissions from the tested motorcycles resulted to be higher than the respective emission levels of the passenger car, while NOx emissions resulted to be dependent on the engine technology.

MARTINI Giorgio;  MANFREDI Urbano;  DE GENNARO Michele; 

2013-10-29

SAE International

JRC81743

ISSN 0148-7191,   

http://www.sae.org,    https://publications.jrc.ec.europa.eu/repository/handle/JRC81743,   

10.4271/2013-01-2619,