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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\u2013127% 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.<\/jats:p>","DOI":"10.1021\/acs.est.5b04240","type":"journal-article","created":{"date-parts":[[2016,1,12]],"date-time":"2016-01-12T12:38:41Z","timestamp":1452602321000},"page":"2018-2026","source":"Crossref","is-referenced-by-count":52,"title":["Greenhouse\nGas and Noxious Emissions from Dual Fuel\nDiesel and Natural Gas Heavy Goods Vehicles"],"prefix":"10.1021","volume":"50","author":[{"given":"Marc E. J.","family":"Stettler","sequence":"first","affiliation":[{"name":"University of Cambridge , , , ,","place":["Cambridge, U.K., CB2 1PZ"]},{"name":"Imperial College London , , ,","place":["London, U.K., SW7 2AZ"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William J. B.","family":"Midgley","sequence":"additional","affiliation":[{"name":"University of Cambridge , , , ,","place":["Cambridge, U.K., CB2 1PZ"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacob J.","family":"Swanson","sequence":"additional","affiliation":[{"name":"Minnesota State University Mankato , , ,","place":["Mankato, Minnesota, United States, 56001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Cebon","sequence":"additional","affiliation":[{"name":"University of Cambridge , , , ,","place":["Cambridge, U.K., CB2 1PZ"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam M.","family":"Boies","sequence":"additional","affiliation":[{"name":"University of Cambridge , , , ,","place":["Cambridge, U.K., CB2 1PZ"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2016,1,12]]},"reference":[{"key":"2026090215482213600_cit1","doi-asserted-by":"crossref","DOI":"10.1787\/energy_tech-2012-en","volume-title":"Energy Technology Perspectives 2012.\nPathways to a Clean Energy System.","author":"International Energy Agency.","year":"2012","edition":"2"},{"key":"2026090215482213600_cit2","unstructured":"Department of Energy & Climate Change.\n          \n          https:\/\/www.gov.uk\/government\/statistics\/energy-consumption-in-the-uk (accessed Aug 6, 2015)."},{"key":"2026090215482213600_cit3","unstructured":"Department of Energy & Climate Change.\n          \n          https:\/\/www.gov.uk\/government\/statistics\/final-uk-emissions-estimates (accessed August 6, 2015)."},{"key":"2026090215482213600_cit4","unstructured":"Ricardo-AEA.\n          \n          Opportunities to Overcome the Barriers\nto Uptake of Low Emission Technologies for Each Commercial Vehicle\nDuty Cycle; London, UK, 2012."},{"key":"2026090215482213600_cit5","unstructured":"Atkins -\nCenex.  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