Regulated and Non-Regulated Emissions From Euro 4 Alternative Fuel Vehicles

摘要

One CNG/petrol and two ethanol/petrol passenger cars were tested using the NEDC and Artemis cycles. Conventional petrol, compressed biogas (CBG), Swedish summer (E85) and winter ethanol fuels (E85W) were used. The tests were performed at 22°C and -7°C. Regulated emissions, particulate mass (PM), particle number (PN), CH{sub}4, HC speciation and aldehyde were measured. Operating with the ethanol fuels, ethanol/petrol vehicles had lower energy consumptions comparing to petrol fuel. E85 fuel led to reductions in NO{sub}x, 1,3-butadiene, benzene, toluene and PN emissions but increases in aldehyde emissions during the 22°C NEDC tests. Both E85 and E85W led to high aldehyde, CO, HC, PM and PN emissions in the -7°C NEDC tests.