CORRELATION OF FUEL ECONOMY AND VEHICLE USE. SUBTASK V REPORT: ANALYSIS MEMORANDUM
The purpose of this analysis memorandum is to determine how changes in VMT level influence motor vehicle fuel economy. The question is framed in the context of the direct engineering correlation between fuel consumption rates (gpm) and average miles per day (AMPD), so that the analysis attempts to capture only the physical sensitivity to AMPD changes. The motivation for, and implementation of, data selection and screening procedures are described. The methodological framework of the analysis is developed also. Development of the correlation function is presented, beginning with an improved estimate of the AMPD component for the DOE regionalization study. The form of the correlation's temperature sensitivity is determined as an intermediate stage of the analysis and investigation of non-temperature effects is conducted. The final analysis produces a correlation function that is sensitive to ambient temperature, the average AMPD level of vehicle, and vehicle age. To illustrate the application of the gpm/AMPD correlation, a brief calculation based on estimating AMPD-standardized gpm values for analysis of in-use fuel economy shortfall is presented.
- Portions are Illegible in Microfiche Products.
Energy and Environmental Analysis, Incorporated1111 North 19th Street
Arlington, VA United States 22209
- Publication Date: 1982-10
- Pagination: 29 p.
- TRT Terms: Finance; Fuel consumption; Temperature; Vehicle miles of travel
- Uncontrolled Terms: Vehicle use
- Old TRIS Terms: Shortfall
- Subject Areas: Energy; Finance; Highways; Vehicles and Equipment; I96: Vehicle Operating Costs;
- Accession Number: 00393696
- Record Type: Publication
- Report/Paper Numbers: DOE/NBM-4014199
- Files: TRIS
- Created Date: Jun 30 1985 12:00AM