Record Display for the EPA National Library Catalog


Main Title Emissions characterization of heavy-duty diesel and gasoline engines and vehicles
Author Ullman, Terry L. ; Hare, C. T.
Other Authors
Author Title of a Work
Hare, Charles T.
CORP Author Southwest Research Inst., San Antonio, TX.;Environmental Protection Agency, Ann Arbor, MI. Emission Control Technology Div.
Publisher Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division,
Year Published 1985
Report Number EPA 460/3-85-001; EPA-68-03-2706; PB85233658
Stock Number PB85-233658
OCLC Number 18941723
Subjects Diesel motor--Alternate fuels
Additional Subjects Exhaust emissions ; Air pollution control ; Particles ; Nitrogen oxides ; Hydrocarbons ; Aldehydes ; Buses ; Carbon monoxide ; Tables(Data) ; Carbon dioxide ; Concentration(Composition) ; Performance evaluation ; Heavy duty vehicles ; Diesel engine exhaust ; Air pollution detection ; Federal test procedure
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 460/3-85-001 NVFEL Library/Ann Arbor, MI 07/11/2014
NTIS  PB85-233658 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiii, ca. 300 p. ; 28 cm.
Laboratory emissions evaluations were performed on heavy-duty diesel and gasoline engines and vehicles. Results from using water injection (unstabilized macro-emulsion formed in the injection pump) on a heavy-duty diesel engine showed major reductions in particulate and NOx emissions, except during idle and light load conditions. Test work carried out on the heavy-duty gasoline engine running at high load confirmed that BaP emissions did exist, but that the levels emitted were low, and that they decreased with leaner f/a ratio. Selected maladjustments (simulating wear of inadequate maintenance) of the Cummins VTB-903 substantially increased HC, smoke and particulate emission levels. Maladjustments of the Detroit Diesel 6V-71N coach engine resulted in lower HC and NOx emission levels, but higher CO emissions, smoke, and particulate. Emissions over various chassis test cycles from three in-service transit buses proved to be highly variable from one bus to another. In addition, emissions from each bus were very test cycle-sensitive.
"May 1985"