EMISSIONS CHARACTERIZATION OF HEAVY-DUTY DIESEL AND GASOLINE ENGINES AND VEHICLES

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 ouut 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 maladjusments (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 lover various chassis test cycles from three inservice transit buses proved to be highly variable from one bus to another. In addition, emissions from each bus were very test cycle-sensitive.

• Corporate Authors:

  Southwest Research Institute

  6220 Culebra Road, P.O. Drawer 28510
  San Antonio, TX  United States  78228-0510
• Authors:
  • Ullman, T L
  • HARE, C T
• Publication Date: 1985-5

Media Info

• Pagination: 346 p.

Subject/Index Terms

• TRT Terms: Carbon monoxide; Diesel engines; Gasoline engines; Heavy vehicles; Nitric oxide; Nitrogen oxides; Particulates; Pollutants; Smoke; Test procedures
• Old TRIS Terms: Emission rates
• Subject Areas: Geotechnology; Highways; Materials; Vehicles and Equipment; I95: Vehicle Inspection;

Filing Info

• Accession Number: 00453548
• Record Type: Publication
• Source Agency: Energy Research Abstracts
• Files: TRIS
• Created Date: Aug 27 2004 9:26PM