Particle Number Emissions of a Euro 6d-Temp Gasoline Vehicle under Extreme Temperatures and Driving Conditions

With the introduction of gasoline particulate filters (GPFs) the particle number (PN) emissions of gasoline direct injection (GDI) vehicles are below the European regulatory limit of 6×10^11 p/km under certification conditions. Nevertheless, concerns have been raised regarding the emission levels at the boundaries of ambient and driving conditions of the real-driving emissions (RDE) regulation. A Euro 6d-Temp GDI vehicle with GPF was tested on the road and in the laboratory with cycles simulating urban congested traffic, dynamic driving, and uphill driving towing a trailer at 85% of maximum payload. The ambient temperatures covered a range from -30 to b50°C. The solid PN emissions were ten times lower than the PN limit under most conditions and temperatures. Only dynamic driving that passively regenerated the filter, and the cycle after, resulted in relatively high emissions, but still below the limit. The results of this study confirm the effectiveness of GPFs in controlling PN emissions under a wide range of conditions.

GIECHASKIEL Barouch;  VALVERDE MORALES Victor;  KONTSES Anastasios;  MELAS Anastasios;  MARTINI Giorgio;  BALAZS Andreas;  ANDERSSON Jon;  SAMARAS Zissis;  DILARA Panagiota; 

2021-05-17

MDPI

JRC125014

2073-4344 (online),   

https://www.mdpi.com/2073-4344/11/5/607,    https://publications.jrc.ec.europa.eu/repository/handle/JRC125014,   

10.3390/catal11050607 (online),