Heavy Duty Vehicles (HDV) powered by Compressed Natural Gas (CNG) are seen as a possible option for curbing CO2 emissions, fuel consumption and operating costs of goods transport. CNG engines have been employed in public use HDVs as an alternative to diesel engines due to their environmental benefits, and particularly due to lower particulate matter (PM) and nitrogen oxides (NOx) emissions. In the framework of the current project, an advanced newly designed CNG prototype engine developed as part of the 7th Framework Programme research project “CO2 Reduction for long distance transport” (CO2RE), is benchmarked against its parent Euro V compliant CNG engine (reference) in order to quantify the improvement in terms of real-world emissions. Results indicated a significant reduction in CO2 emissions with the prototype CNG engine both at low and high loads, which varied between 5.0-8.4%. The highest CO2 reduction was observed during on-road testing, with the corresponding reduction at low loads being more pronounced compared to high loads. Furthermore, reductions of NOx and CO emissions were observed under all testing conditions. On the other hand, hydrocarbon and methane emissions were increased with the introduction of the Prototype engine.
GRIGORATOS Theodoros;
FONTARAS Georgios;
GIECHASKIEL Barouch;
MARTINI Giorgio;
2015-09-16
Publications Office of the European Union
JRC97026
978-92-79-50584-3 (print),
978-92-79-50585-0,
1831-9424 (print),
1018-5593 (online),
EUR 27415,
OP LD-NA-27415-EN-C (print),
OP LD-NA-27415-EN-N (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC97026,
10.2790/990071 (print),
10.2790/008445 (online),
