||A study of methods for reducing evaporative background hydrocarbon emissions from new vehicles /
Rarick, Thomas. ;
||Environmental Protection Agency, Ann Arbor, Mich. Standards Development and Support Branch.
|| 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,
Air Pollution. ;
Vehicle Emissions. ;
Automobiles--Motors--Exhaust gas. ;
Automobiles--Motors--Exhaust gas--Testing--United States. ;
Motor vehicles--Exhaust gas--Testing--United States.
Air pollution ;
Automotive fuels ;
Vinyl resins ;
Mathematical prediction ;
Vehicular traffic ;
Research projects ;
Evaporative emissions ;
New motor vehicles ;
||NVFEL Library/Ann Arbor, MI
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||[i], 15 p. : charts ; 28 cm.
The purpose of this study is two-fold: (1) to determine if the magnitude of transient background levels could be accurately predicted at some point in time by performing total evaporative emission tests; and (2) determine if transient background levels could be artificially lowered to the point of insignificance by elevated temperatures (baking) and or driving. Tests were conducted on 4 test vehicles for which total emissions were measured intermittently over a 3-week period. Between emission measurements certain vehicles were baked and/or driven on a dynamometer to attempt to reduce their background emissions. At the end of this testing at least two repeat background emissions tests were conducted on each vehicle. The results are discussed.
At head of title: Technical Support Report for Regulatory Action. "October 1976." Cover title. "EVAP 76-4." Includes bibliographical references (p. 15).