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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 Mangement, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Standards Development and Support Branch,
Year Published 1978
Report Number EPA-AA-LDTP-77-4
Stock Number PB80-142839
OCLC Number 173418807
Subjects Dynamometers ; Tire Testing ; Rolling Resistance
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
ELCD  EPA AA-LDTP-77-4 NVFEL Library/Ann Arbor, MI 08/27/2013
NTIS  PB80-142839 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 22, [44] p. : charts ; 28 cm.
Abstract 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.
Notes Includes bibliographical references (p. 22). Technical report. Cover title. "LDTP - 77-4." "March 1978."
Place Published Ann Arbor, Mich.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Air and Waste Mangement. Office of Mobile Source Air Pollution Control. Emission Control Technology Division. Standards Development and Support Branch.
NTIS Title Notes Technical rept..
PUB Date Free Form Mar 78
Category Codes 13F; 14B; 85H
NTIS Prices PC A04/MF A01
Primary Description 200/05
BIB Level m
Cataloging Source OCLC/T
Control Number 323775009
OCLC Time Stamp 20110412103417
Language eng
Origin OCLC
OCLC Rec Leader 01265cam 2200301Ka 45020