Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title An evaluation of three-way control single and dual bed catalysts as applied to heavy-duty gasoline engines /
Author Nugent, Thomas.
CORP Author Environmental Protection Agency, Ann Arbor, MI. Standards Development and Support Branch.
Publisher U.S. Environmental Protection Agency, Office of Air, Noise and Radiation, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Standards Development and Support Branch,
Year Published 1981
Report Number EPA-AA-SDSB-81-4
Stock Number PB81-224982
OCLC Number 720026869
Subjects Motor vehicles--Pollution control devices--Testing. ; Automobiles--Catalytic converters--Testing. ; Trucks--Motors.
Additional Subjects Truck engines ; Gasoline engines ; Catalytic converters ; Exhaust emissions ; Air pollution control equipment ; Fuel consumption ; Carburetors ; Feedback control ; Performance evaluation ; Heavy duty vehicles ; Heavy duty engines
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA AA-SDSB-81-4 NVFEL Library/Ann Arbor, MI 05/09/2011
NTIS  PB81-224982 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation [i], 28 p. : ill., charts ; 28 cm.
A test program to evaluate the applicability of three-way control (TWC) and dual-bed catalysts (TWC and Oxidation Catalysts) in combination with a closed-loop control stoichiometric (feedback) carburetor on a production 1978 IHC 404 CID heavy duty gasoline engine was conducted at EPA's Office of Mobile Source Air Pollution Control Laboratory. Testing was conducted according to the Federal test procedure for the heavy-duty transient cycle. The test program consisted of forty-six cold-start tests, fifty-eight confirmatory hot-start tests run to insure accuracy and precision of the cold-start tests, and fourteen hot-start tests run to identify the effects of air/fuel ratio control points on NOx emissions. The effects of various combinations of catalysts, EGR, air/fuel ratio control points, carburetor response times and air pump capacity on emissions, fuel economy and engine power were examined.
Includes bibliographical references (p. 23). Technical report. "EPA-AA-SDSB-81-4." Cover title. "April 1981."