Regulated and unregulated emissions from Euro VI Diesel and CNG heavy-duty vehicles.

Autor: Gioria R; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy., Selleri T; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy.; European Environment Agency (EEA), 1050 Copenhagen, Denmark., Giechaskiel B; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy., Franzetti J; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy.; ETSI Minas y Energía, Universidad Politécnica de Madrid, Paseo Juan XXIII 11, Madrid, Spain., Ferrarese C; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy.; ETSI Minas y Energía, Universidad Politécnica de Madrid, Paseo Juan XXIII 11, Madrid, Spain., Melas A; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy., Forloni F; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy., Suarez-Bertoa R; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy., Perujo A; European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy.
Jazyk: angličtina
Zdroj: Transportation research. Part D, Transport and environment [Transp Res D Transp Environ] 2024 Sep; Vol. 134, pp. 104349.
DOI: 10.1016/j.trd.2024.104349
Abstrakt: This study compares emissions from Euro VI-D Diesel and CNG buses across temperatures from -7 °C to 35 °C. Pollutants including NOx, THC, CH 4 , CO, NH 3 , N 2 O, HCHO, Solid Particle Number larger than 23 nm (SPN23) and larger than 10 nm (SPN10) were measured. Both buses complied with Euro VI-D but exceeded European Commission's proposed Euro 7 limits, notably for NOx and SPN10. The CNG bus also surpassed NH 3 , CO, and CH 4 limits, while the Diesel exceeded N 2 O limits. High NH 3 emissions were observed from CNG (up to 0.320 g/kWh), with Diesel reporting lower levels (up to 0.021 g/kWh). HCHO emission from both vehicles were very low. SPN23 was under limits, but SPN10 exceeded Euro 7 limits at cold start tests. CNG's CH 4 and N 2 O emissions constituted up to 4.6% and 3.5% of CO 2 equivalent, respectively. Diesel bus showed negligible CH 4 but N 2 O emissions represented up to 37% of CO 2 equivalent.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2024 The Authors.)
Databáze: MEDLINE
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