{"id":{"repo_id":"wvu","oai_identifier":"oai:researchrepository.wvu.edu:etd-2046"},"canonical_url":"https://search.dev.ndltd.org/etd/wvu/oai:researchrepository.wvu.edu:etd-2046","repository":{"repo_id":"wvu","name":"West Virginia University","base_url":"https://researchrepository.wvu.edu/do/oai/"},"display":{"title":"Measurement of particulate matter size, concentration and mass emissions from in-use heavy duty vehicles","abstract":"As technological advancements lower heavy duty vehicle particulate matter (PM) mass emission rates, there is concern that these improvements are increasing the toxicity of the PM by virtue of a subsequent reduction in particle size. These ultrafine particles are able to better penetrate the alveolar region where they can cause serious lung disorders. Alternative fuels such as compressed and liquefied natural gas (CNG and LNG) and the synthetic diesel fuel Mossgas are attractive in that they reduce the levels of total PM. However, use of natural gas in internal combustion engines may produce a larger number of smaller particles than commercial diesel fuel, and little particle size information is available on Mossgas combustion.;The tests showed the effectiveness of the measurement system while returning mass and size data for the various fleets. The particulate measurement system allowed this full description of particle emissions to be performed quantitatively rather than mathematically.","abstract_html":"As technological advancements lower heavy duty vehicle particulate matter (PM) mass emission rates, there is concern that these improvements are increasing the toxicity of the PM by virtue of a subsequent reduction in particle size. These ultrafine particles are able to better penetrate the alveolar region where they can cause serious lung disorders. Alternative fuels such as compressed and liquefied natural gas (CNG and LNG) and the synthetic diesel fuel Mossgas are attractive in that they reduce the levels of total PM. However, use of natural gas in internal combustion engines may produce a larger number of smaller particles than commercial diesel fuel, and little particle size information is available on Mossgas combustion.;The tests showed the effectiveness of the measurement system while returning mass and size data for the various fleets. The particulate measurement system allowed this full description of particle emissions to be performed quantitatively rather than mathematically.","abstract_has_math":false,"creators":["Byers, Richard Jason"],"institution":null,"degree_name":"MS","degree_level":"Thesis","degree_discipline":"Mechanical and Aerospace Engineering","degree_department":null,"school":null,"contributors":["Mridul Gautam."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1999,"date_issued":"1999-12-01T08:00:00Z","date_published":"1999-12-01T08:00:00Z","updated_at":"2026-07-24T06:15:16Z","subjects":["Mechanical engineering","Energy"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://researchrepository.wvu.edu/etd/1043"],"render_values":[{"text":"https://researchrepository.wvu.edu/etd/1043","href":"https://researchrepository.wvu.edu/etd/1043","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.33915/etd.1043","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mridul Gautam."]},{"key":"dc:creator","label":"Author","values":["Byers, Richard Jason"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2019-01-17T08:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical and Aerospace Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["MS"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Mechanical engineering","Energy"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://doi.org/10.33915/etd.1043","https://researchrepository.wvu.edu/etd/1043"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["As technological advancements lower heavy duty vehicle particulate matter (PM) mass emission rates, there is concern that these improvements are increasing the toxicity of the PM by virtue of a subsequent reduction in particle size. These ultrafine particles are able to better penetrate the alveolar region where they can cause serious lung disorders. Alternative fuels such as compressed and liquefied natural gas (CNG and LNG) and the synthetic diesel fuel Mossgas are attractive in that they reduce the levels of total PM. However, use of natural gas in internal combustion engines may produce a larger number of smaller particles than commercial diesel fuel, and little particle size information is available on Mossgas combustion.;The tests showed the effectiveness of the measurement system while returning mass and size data for the various fleets. The particulate measurement system allowed this full description of particle emissions to be performed quantitatively rather than mathematically."]},{"key":"dc:title","label":"Title","values":["Measurement of particulate matter size, concentration and mass emissions from in-use heavy duty vehicles"]}]}],"canonical_facts":{"dc:contributor":["Mridul Gautam."],"dc:creator":["Byers, Richard Jason"],"dc:date.available":["2019-01-17T08:00:00Z"],"dc:description.abstract":["As technological advancements lower heavy duty vehicle particulate matter (PM) mass emission rates, there is concern that these improvements are increasing the toxicity of the PM by virtue of a subsequent reduction in particle size. These ultrafine particles are able to better penetrate the alveolar region where they can cause serious lung disorders. Alternative fuels such as compressed and liquefied natural gas (CNG and LNG) and the synthetic diesel fuel Mossgas are attractive in that they reduce the levels of total PM. However, use of natural gas in internal combustion engines may produce a larger number of smaller particles than commercial diesel fuel, and little particle size information is available on Mossgas combustion.;The tests showed the effectiveness of the measurement system while returning mass and size data for the various fleets. The particulate measurement system allowed this full description of particle emissions to be performed quantitatively rather than mathematically."],"dc:identifier":["https://doi.org/10.33915/etd.1043","https://researchrepository.wvu.edu/etd/1043"],"dc:subject":["Mechanical engineering","Energy"],"dc:title":["Measurement of particulate matter size, concentration and mass emissions from in-use heavy duty vehicles"],"thesis:degree_discipline":["Mechanical and Aerospace Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["MS"]},"updated_at":"2026-07-24T06:15:16Z"}