Record Display for the EPA National Library Catalog


Main Title Light-duty vehicle driveability procedure investigation /
Author Williams, W. C.
CORP Author Amoco Oil Co., Naperville, IL. Research and Development Dept.;Environmental Protection Agency, Ann Arbor, MI. Motor Vehicle Emission Lab.
Publisher Environmental Protection Agency, Office of Air, Noise and Radiation, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Characterization and Applications Branch,
Year Published 1981
Report Number EPA-460/3-81-009; EPA-68-03-2875
Stock Number PB81-210270
OCLC Number 756044829
Subjects Automobiles--Motors--Exhaust gas--Testing ; Automobiles--Performance
Additional Subjects Automobiles ; Performance evaluation ; Starting ; Stalling ; Acceleration ; Vibration ; Automotive fuels ; Automobile engines ; Light duty vehicles ; Driveability ; NTISEPAMAP
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 460-3-81-009 NVFEL Library/Ann Arbor, MI 10/11/2011
NTIS  PB81-210270 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation [iv], 40, [39] p. : charts ; 28 cm.
The EPA's interest in driveability stems from evidence that adjustments of some vehicle engine settings to values other than those recommended by the manufacturer can improve driveability during cold start and warmup driving but often exhaust emissions and/or fuel economy suffer as a result. Because of this, EPA may eventually consider issuing driveability guidelines or standards. Such regulations must be based on quantitative test methods but current industry test procedures are primarily subjective. Consequently EPA awarded a contract to determine whether an objective procedure could be developed for assessing vehicle cold start and warmup driveability. Nearly 200 driveability tests were conducted with this car on chassis dynamometers using various driving cycles and ambient test temperatures. Throughout each test the instrument output signals and the trained raters' evaluations of performance were computer recorded. A series of computer programs were developed to identify and measure the severity of several driveability problems.
Includes bibliographical references (p. 40). "EPA-460/3-81-009." "April, 1981." "Contract No. 68-03-2875"--T.p. "EPA Project Officer: J. P. Whitehead"--T.p.