Record Display for the EPA National Library Catalog


Main Title Transient cycle arrangement for heavy-duty engine and chassis emission testing /
Author France, Chester J.
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 HDV 78-04
Stock Number PB-293 764
OCLC Number 706130833
Subjects Air--Pollution--Measurement ; Air Pollution ; Vehicle Emissions ; Motor vehicles--Exhaust gas--Testing--United States ; Automobiles--Motors--Exhaust gas--Testing--United States
Additional Subjects Trucks ; Exhaust emissions ; Periodic variations ; Gasoline engines ; Diesel engines ; Statistical data ; Air pollution ; New York ; California ; Heavy duty vehicles ; Transient cycles ; Los Angeles(California) ; New York City(New York)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA HDV-78-04 NVFEL Library/Ann Arbor, MI 03/21/2011
NTIS  PB-293 764 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation iii, 42 p. : charts ; 28 cm.
Olson Laboratories, EPA's heavy-duty cycle development contractor, has generated various nominal 5-minute chassis and engine cycles from the CAPE-21 data base. The Emission Control Technology Division of EPA has in turn, selected the best cycle in each category for which cycles were generated (both chassis and engine cycles). The final step in ECTD's HD transient cycle development effort is the arrangement of these five minute cycles into one cycle which exhibits the proper trip characteristics as determined from the CAPE-21 survey data. The purpose of this report is to identify the cycle arrangement that has the proper trip characteristics and which also meets certain practical requirements. Chassis and engine cycle arrangements for both HD gasoline and diesel vehicles are developed. The equations necessary for exhaust emission calculations are also presented.
Technical report. "August 1978." Cover title. "HDV 78-04."