A STUDY OF FUEL ECONOMY AND EMISSION REDUCTION METHODS FOR MARINE AND LOCOMOTIVE DIESEL ENGINES

This interim report presents the results of the first phase of a two-part program to investigate methods of improving fuel consumption and reducing exhaust emissions for in-service diesel engines used as prime movers in locomotives and several classes of Coast Guard vessels. The engines are large, medium-speed units with individual cylinder displacements in excess of 150 cubic inches and power ratings from 2000 to 4000 brake horsepower. The study that is the subject of this report uses information that was obtained from the technical literature and from interviews of engine manufacturers, railroads, and engineering staffs of Coast Guard vessels. Several methods were investigated for their potential to reduce fuel consumption and emissions, within the constraint of maintaining adequate locomotive and vessel operating flexibility and engine life. These methods included the retrofit of engines with existing state-of-the-art components (e.g., injectors, governor, turbocharger) of improved design, the adjustment of injection timing, and changes in engine operating modes (speed-power points). The effects of engine wear and maintenance on fuel consumption and emissions were investigated, as were the effects of ambient air properties (temperature, pressure, humidity).

• Supplemental Notes:
  • Also pub. as Coast Guard Report no. CG-D-124-75.
• Corporate Authors:

  Southwest Research Institute

  Department of Engine and Vehicle Research
  San Antonio, TX  United States  78284

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142

  United States Coast Guard

  Office of Research and Development, 400 7th Street, NW
  Washington, DC  United States  20590

  Office of Systems Development and Technology

  Department of Transportation, 400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Storment, J O
  • Wood, C D
  • Mathis, R J
• Publication Date: 1975-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 118 p.

Subject/Index Terms

• TRT Terms: Air pollution; Carbon monoxide; Components; Diagnostic tests; Diesel engine exhaust gases; Diesel engines; Diesel locomotives; Economic efficiency; Emission control systems; Exhaust gases; Fuel consumption; Maintenance; Marine diesel engines; Measurement; Nitric oxide; Nitrogen oxides; Performance evaluations; Superchargers; Thermal efficiency; Wear
• Identifier Terms: United States Coast Guard
• Uncontrolled Terms: Efficiency
• Old TRIS Terms: Diesel engine diagnostics; Marine propulsion; Supercharging
• Subject Areas: Economics; Energy; Maintenance and Preservation; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00093593
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DOT-TSC-OST-75-41, DOT-TSC-USCG-75-2
• Contract Numbers: CN-DOT-TSC-920
• Files: NTIS, TRIS
• Created Date: Feb 4 2003 12:00AM