HEAVY-DUTY FUEL ECONOMY PROGRAM. PHASE I. SPECIFIC ANALYSIS OF CERTAIN EXISTING DATA

This report presents the results of several specific items of analysis conducted on heavy-duty vehicle data generated from two EPA projects. The purpose of the analysis was to provide information on the relationship between engine dynamometer fuel consumption and emissions and fuel consumption and emissions of trucks in actual use. Two separate tasks are covered. In the first task, ten specific items of analysis were performed on the gasoline-powered and diesel-powered truck fuel consumption and emissions data generated under the title 'Study of Emissions from Heavy-Duty Vehicles'. In the second task, the data from CRC Project CAPE-21-71, 'Truck Driving Pattern and Use Survey' were utilized to attempt to develop modal coefficients for both the 9-mode heavy-duty gasoline and 13-mode heavy-duty diesel emissions tests that would correlate the 9 and 13-mode BSFC values with fuel economy of trucks in actual use. This latter attempt was largely unsuccessful.

• Corporate Authors:

  Southwest Research Institute

  6220 Culebra Road, P.O. Drawer 28510
  San Antonio, TX  United States  78228-0510

  Environmental Protection Agency

  Emission Control Technology Division, 2565 Plymounth Road
  Ann Arbor, MI  United States  48105
• Authors:
  • INGALLS, M N
  • Mason, R L
• Publication Date: 1977-1

Media Info

• Pagination: 457 p.

Subject/Index Terms

• TRT Terms: Air pollution; Carbon monoxide; Chemical concentration; Computer programs; Data tables; Diesel engines; Diesel trucks; Dynamometers; Exhaust gases; Fuel consumption; Gasoline engines; Hydrocarbons; Nitric oxide; Nitrogen oxides; Numerical analysis; Pollutants; Regression analysis; Trip generation; Trucks
• Identifier Terms: FORTRAN (Computer program language)
• Subject Areas: Data and Information Technology; Energy; Highways; Motor Carriers; Vehicles and Equipment;

Filing Info

• Accession Number: 00186612
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SWRI-AW-11-4311 Final Rpt., EPA/460/3-77/001
• Contract Numbers: EPA-68-03-2220
• Files: TRIS
• Created Date: Feb 27 1979 12:00AM