Characteristics of real-world gaseous exhaust emissions from cars in heterogeneous traffic conditions

Kuppili, Sudheer Kumar; Dheeraj Alshetty, V.; Diya, M.; Shiva Nagendra, S. M.; Ramadurai, Gitakrishnan; Ramesh, A.; Gulia, Sunil; Namdeo, Anil; Maji, Kamal; Bell, Margaret; Goodman, Paul; Hayes, Enda; Barnes, Jo; Longhurst, James; De Vito, Laura

Abstract

In this study, researchers have explored real-world driving conditions and developed emission factors for 58 passenger cars using on-board emission measurement technique while driving on five different routes in Delhi. The measured average emission factors of CO, HC, and NO were 3.99, 0.34, and 0.54 g/km for diesel vehicles, 7.26, 0.17, and 0.62 for petrol vehicles respectively. Road, traffic, vehicle type, and driving characteristics affect the quantity of emissions released. However, speed and acceleration significantly impact emission rates increasing with the increase in speed and acceleration. Also, emissions were minimal at 40–60 kmph and −0.5–0.5 m/s . The estimated city-wide CO, HC, and NO emissions were 60.8, 4.8, and 9.72tonnes/day. These results demonstrate the importance of monitoring the real-world exhaust emissions given the substantial difference between test cycle measurements used for compliance testing of new vehicles. 2

• Journal Article Type: Article
• Acceptance Date: Apr 19, 2021
• Online Publication Date: Apr 30, 2021
• Publication Date: Jun 1, 2021
• Deposit Date: May 10, 2021
• Publicly Available Date: May 1, 2022
• Journal: Transportation Research Part D: Transport and Environment
• Print ISSN: 1361-9209
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 95
• Pages: 102855
• DOI: https://doi.org/10.1016/j.trd.2021.102855
• Keywords: General Environmental Science; Transportation
• Public URL: https://uwe-repository.worktribe.com/output/7356158
• Additional Information: This article is maintained by: Elsevier; Article Title: Characteristics of real-world gaseous exhaust emissions from cars in heterogeneous traffic conditions; Journal Title: Transportation Research Part D: Transport and Environment; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.trd.2021.102855; Content Type: article; Copyright: © 2021 Elsevier Ltd. All rights reserved.