Record Display for the EPA National Library Catalog


Main Title Light duty truck road load determination /
Author Thompson, Glenn D.
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,
Year Published 1976
Report Number EPA 420-R-76-002; LDTP 76-4; LDTP-76-3
Stock Number PB-272 291
OCLC Number 246683013
Subjects Dynamometer ; Trucks--Pollution control devices
Additional Subjects Motor vehicles ; Fuel consumption ; Dynamometers ; Weight(Mass) ; Measurement ; Automobile tires ; Pressure ; Loads(Forces) ; Regression analysis ; Exhaust emmissions ; Road loads ; Light duty vehicles ; Rolling resistance
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 420-R-76-002 NVFEL Library/Ann Arbor, MI 09/12/2008
ELCD  EPA LDTP-76-3 NVFEL Library/Ann Arbor, MI 04/25/2011
NTIS  PB-272 291 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 35, [18] pages : charts ; 28 cm
When vehicle exhaust emission tests or vehicle fuel consumption measurements are performed on a chassis dynamometer, the dynamometer is usually adjusted to simulate road experience of the vehicle. The purpose of this study is to develop equations to predict the dynamometer adjustment forces appropriate to simulate the on-road experiences of light duty vehicles. To accomplish this, equations of road load versus speed were obtained from a diverse class of light duty vehicles. These data were then converted to dynamometer adjustment forces appropriate to simulate the on-road experience of a vehicle. Conclusion: further effort should be made to develop road load prediction systems based on vehicle frontal area and, if necessary, estimates of the vehicle aerodynamic drag coefficient.
At head of title: Technical support report for regulatory action. "September 1976." Includes bibliographical references (page 35).