Record Display for the EPA National Library Catalog


Main Title Tire-dynamometer roll effects /
Author Burgeson, Richard N.
CORP Author Environmental Protection Agency, Ann Arbor, MI. 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 1978
Report Number LDTP-77-4; EPA-AA-LDTP-77-4
Stock Number PB80-142839
OCLC Number 173418807
Subjects Dynamometers ; Equipment tests ; Rolling resistance ; Tires ; Tire Testing
Additional Subjects Automobiles ; Tires ; Dynamometers ; Rolling contact loads ; Rolling friction ; Aerodynamic loads ; Analysis of variance ; Data acquisition ; Fuel consumption ; Exhaust emissions ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD ARCHIVE EPA AA-LDTP-77-4 AWBERC Library/Cincinnati,OH 01/29/2024
ELCD  EPA AA-LDTP-77-4 NVFEL Library/Ann Arbor, MI 08/27/2013 DISPERSAL
NTIS  PB80-142839 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 22, [44] pages : charts ; 28 cm
The Federal Government currently determines light-duty vehicle fuel economy and emissions on the twin small-roll dynamometer. The geometry of the dynamometer-vehicle system is one which cannot be duplicated under actual driving conditions because only the rear tires are placed on the dynamometer and the surface upon which they are placed is curved. Recently, questions have been raised as to the validity of the assumption that two tires on the dynamometer equals four tires on the road with regard to all tire construction types. However, it has been suggested that when radial tires are operated on the twin small-roll dynamometer they exhibit higher rolling resistance than the other construction types under the same conditions. Lack of information prompted an in-house investigation into the effects of the twin-small-roll dynamometer on tires.
Includes bibliographical references (page 22). Technical report. Cover title. "LDTP - 77-4." "March 1978."