Research Article
Nov 1974
Automobile Energy Requirements
Author: Eric HirstAuthor Affiliations
Publication: Transportation Engineering Journal of ASCE
Volume 100, Issue 4
Abstract
Variations in automobile fuel use as a function of trip length and of driving conditions (urban and intercity) are calculated for three hypothetical automobiles: subconmpact; average; and full size. In addition to direct (propulsion) energy use, total energy requirements for these three cars, operated under both urban and intercity driving conditions, are calculated. Fuel use declines markedly with increasing trip length, because the adverse impacts of cold start are spread over more miles. Fuel use is considerably higher for urban driving than for intercity driving, because of frequent stop-and-go cycles and cold start operations (due to shorter trip lengths for urban driving). Subcompacts use much less fuel and do full size cars, particularly in urban areas. Total energy requirements for autos exceed direct gasoline consumption by about 70%.
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Published In
Transportation Engineering Journal of ASCE
Volume 100 • Issue 4 • November 1974
Pages: 815 - 826
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Nov 1974
Published online: Feb 5, 2021
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Eric Hirst
Chf., Transportation Research, Office of Energy Conservation, Federal Energy Administration, Washington, D.C., on leave of absence as Research Engr., ORNL-NSF Environmental Program, Oak Ridge National Lab., Oak Ridge, Tenn.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.