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Greenhouse gas and noxious emissions from dual fuel diesel and natural gas heavy goods vehicles

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journal contribution
posted on 28.01.2021, 11:29 by Marc EJ Stettler, Will Midgley, Jacob J Swanson, David Cebon, Adam M Boies
© 2016 American Chemical Society. Dual fuel diesel and natural gas heavy goods vehicles (HGVs) operate on a combination of the two fuels simultaneously. By substituting diesel for natural gas, vehicle operators can benefit from reduced fuel costs and as natural gas has a lower CO2 intensity compared to diesel, dual fuel HGVs have the potential to reduce greenhouse gas (GHG) emissions from the freight sector. In this study, energy consumption, greenhouse gas and noxious emissions for five after-market dual fuel configurations of two vehicle platforms are compared relative to their diesel-only baseline values over transient and steady state testing. Over a transient cycle, CO2 emissions are reduced by up to 9%; however, methane (CH4) emissions due to incomplete combustion lead to CO2e emissions that are 50-127% higher than the equivalent diesel vehicle. Oxidation catalysts evaluated on the vehicles at steady state reduced CH4 emissions by at most 15% at exhaust gas temperatures representative of transient conditions. This study highlights that control of CH4 emissions and improved control of in-cylinder CH4 combustion are required to reduce total GHG emissions of dual fuel HGVs relative to diesel vehicles.

Funding

Centre for Sustainable Road Freight Transport

Engineering and Physical Sciences Research Council

Find out more...

UK Department for Transport, the Office for Low Emission Vehicles and Innovate UK (project reference: 400266)

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Environmental Science & Technology

Volume

50

Issue

4

Pages

2018 - 2026

Publisher

American Chemical Society (ACS)

Version

VoR (Version of Record)

Rights holder

© American Chemical Society

Publisher statement

This is an Open Access Article. It is published by American Chemical Society under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

12/01/2016

Publication date

2016-01-12

Copyright date

2016

ISSN

0013-936X

eISSN

1520-5851

Language

en

Depositor

Deposit date: 28 January 2021

Licence

Exports