||Emissions characterization of heavy-duty diesel and gasoline engines and vehicles /
Ullman, Terry L. ;
Hare, C. T.
||Southwest Research Inst., San Antonio, TX.;Environmental Protection Agency, Ann Arbor, MI. Emission Control Technology Div.
|| U.S. Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division,
Diesel motor--Alternative fuels. ;
Diesel motor--Alternate fuels
Exhaust emissions ;
Air pollution control ;
Nitrogen oxides ;
Carbon monoxide ;
Carbon dioxide ;
Performance evaluation ;
Heavy duty vehicles ;
Diesel engine exhaust ;
Air pollution detection ;
Federal test procedure
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||346 pages ; 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.
Final report. "May 1985." Microfiche.