{"id":{"repo_id":"wvu","oai_identifier":"oai:researchrepository.wvu.edu:etd-2352"},"canonical_url":"https://search.dev.ndltd.org/etd/wvu/oai:researchrepository.wvu.edu:etd-2352","repository":{"repo_id":"wvu","name":"West Virginia University","base_url":"https://researchrepository.wvu.edu/do/oai/"},"display":{"title":"Comparison of heavy-duty diesel engine emissions between an on-road route and engine dynamometer simulated on-road cycle","abstract":"Heavy-duty diesel engines are known to emit concentrations of harmful compounds of oxides of nitrogen (NOx) and particulate matter (PM). As a means of emissions control, engine dynamometer certification is currently employed. Current certification cycles provide for standardized comparisons, but may not be indicative of real-world emissions. Accurate in-use emissions testing would provide more realistic engine emissions values.;To examine the accuracy of the West Virginia University Mobile Emissions Measurement System (MEMS), on-road emissions tests were performed with six different diesel-powered vehicles. Exhaust species measured by MEMS were NO x and CO2, reported on a brake-specific basis. Information obtained during on-road emissions tests was implemented in the creation of a simulated in-use engine dynamometer cycle, and the system was compared against an engine dynamometer laboratory.;The ability to accurately generate an in-use driving cycle for an engine dynamometer was studied, and variables affecting route repeatability were measured. (Abstract shortened by UMI.).","abstract_html":"Heavy-duty diesel engines are known to emit concentrations of harmful compounds of oxides of nitrogen (NOx) and particulate matter (PM). As a means of emissions control, engine dynamometer certification is currently employed. Current certification cycles provide for standardized comparisons, but may not be indicative of real-world emissions. Accurate in-use emissions testing would provide more realistic engine emissions values.;To examine the accuracy of the West Virginia University Mobile Emissions Measurement System (MEMS), on-road emissions tests were performed with six different diesel-powered vehicles. Exhaust species measured by MEMS were NO x and CO2, reported on a brake-specific basis. Information obtained during on-road emissions tests was implemented in the creation of a simulated in-use engine dynamometer cycle, and the system was compared against an engine dynamometer laboratory.;The ability to accurately generate an in-use driving cycle for an engine dynamometer was studied, and variables affecting route repeatability were measured. (Abstract shortened by UMI.).","abstract_has_math":false,"creators":["Gibble, John Curtis"],"institution":null,"degree_name":"MS","degree_level":"Thesis","degree_discipline":"Mechanical and Aerospace Engineering","degree_department":null,"school":null,"contributors":["Gregory J. Thompson."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2003,"date_issued":"2003-08-01T07:00:00Z","date_published":"2003-08-01T07:00:00Z","updated_at":"2026-07-24T06:15:40Z","subjects":["Mechanical engineering","Automotive engineering","Environmental engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://researchrepository.wvu.edu/etd/1349"],"render_values":[{"text":"https://researchrepository.wvu.edu/etd/1349","href":"https://researchrepository.wvu.edu/etd/1349","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.33915/etd.1349","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Gregory J. 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As a means of emissions control, engine dynamometer certification is currently employed. Current certification cycles provide for standardized comparisons, but may not be indicative of real-world emissions. Accurate in-use emissions testing would provide more realistic engine emissions values.;To examine the accuracy of the West Virginia University Mobile Emissions Measurement System (MEMS), on-road emissions tests were performed with six different diesel-powered vehicles. Exhaust species measured by MEMS were NO x and CO2, reported on a brake-specific basis. Information obtained during on-road emissions tests was implemented in the creation of a simulated in-use engine dynamometer cycle, and the system was compared against an engine dynamometer laboratory.;The ability to accurately generate an in-use driving cycle for an engine dynamometer was studied, and variables affecting route repeatability were measured. (Abstract shortened by UMI.)."]},{"key":"dc:title","label":"Title","values":["Comparison of heavy-duty diesel engine emissions between an on-road route and engine dynamometer simulated on-road cycle"]}]}],"canonical_facts":{"dc:contributor":["Gregory J. Thompson."],"dc:creator":["Gibble, John Curtis"],"dc:date.available":["2019-01-17T08:00:00Z"],"dc:description.abstract":["Heavy-duty diesel engines are known to emit concentrations of harmful compounds of oxides of nitrogen (NOx) and particulate matter (PM). As a means of emissions control, engine dynamometer certification is currently employed. Current certification cycles provide for standardized comparisons, but may not be indicative of real-world emissions. Accurate in-use emissions testing would provide more realistic engine emissions values.;To examine the accuracy of the West Virginia University Mobile Emissions Measurement System (MEMS), on-road emissions tests were performed with six different diesel-powered vehicles. Exhaust species measured by MEMS were NO x and CO2, reported on a brake-specific basis. Information obtained during on-road emissions tests was implemented in the creation of a simulated in-use engine dynamometer cycle, and the system was compared against an engine dynamometer laboratory.;The ability to accurately generate an in-use driving cycle for an engine dynamometer was studied, and variables affecting route repeatability were measured. (Abstract shortened by UMI.)."],"dc:identifier":["https://doi.org/10.33915/etd.1349","https://researchrepository.wvu.edu/etd/1349"],"dc:subject":["Mechanical engineering","Automotive engineering","Environmental engineering"],"dc:title":["Comparison of heavy-duty diesel engine emissions between an on-road route and engine dynamometer simulated on-road cycle"],"thesis:degree_discipline":["Mechanical and Aerospace Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["MS"]},"updated_at":"2026-07-24T06:15:40Z"}