Record Display for the EPA National Library Catalog


Main Title Comparison of dynamometer power absorption characteristics and vehicle road load measurements /
Author Thompson, Glenn D. ; Torres., Myriam
Other Authors
Author Title of a Work
Torres, Myriam.
CORP Author Environmental Protection Agency, Ann Arbor, Mich. Standards Development and Support Branch.
Publisher U.S. Environmental Protection Agency, Office of Air and Waste Management, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Standards Development and Support Branch,
Year Published 1977
Report Number LDTP-77-3
Stock Number PB-274 882
OCLC Number 713644938
Subjects Automobiles--Motors--Exhaust gas ; Roads--Riding qualities ; Dynamometer
Additional Subjects Motor vehicles ; Loads(Forces) ; Roads ; Dynamometers ; Exhaust emissions ; Fuel consumption ; Torque ; Friction ; Acceleration ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA LDTP-77-3 NVFEL Library/Ann Arbor, MI 04/25/2011 DISPERSAL
NTIS  PB-274 882 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation [i], 16, [76] p. : charts ; 28 cm.
The report presents vehicle road load force versus speed curves and Clayton dynamometer force versus speed curves. The vehicle road load force data were collected in the recent road load project, where the vehicle road load, as a function of speed, was determined for sixty-three light-duty vehicles. The dynamometer data were obtained from the six EPA certification dynamometers. This data is first used to generate an equation to represent an average emission dynamometer. The variations of the individual dynamometers about this average dynamometer curve are discussed. Subsequently, each vehicle curve is compared to this average dynamometer curve. Variations between different vehicles are discussed, and the possible intrinsic error caused by differences between the shape of the dynamometer force versus speed curve and the typical vehicle road load curve is investigated.
Cover title. "July 1977." "LDTP-77-3." At head of title: Technical Support Report for Regulatory Action." Includes bibliographical references (p. 16).