Record Display for the EPA National Library Catalog


Main Title Exhaust emissions from three low-emission vehicles using catalytic converters /
Author Thomson, John C.,
CORP Author Environmental Protection Agency, Ann Arbor, Mich. Div. of Motor Vehicle Research and Development.
Publisher Division of Motor Vehicle Research and Development, Air Pollution Control Office, Environmental Protection Agency,
Year Published 1971
Report Number 71-19; TAEB-71-19; APTD-1424
Stock Number PB-218 394
OCLC Number 41576219
Subjects Automobiles--Catalytic converters--Testing
Additional Subjects ( Automobile engines ; Air pollution control equipment) ; Exhaust gases ; Air pollution ; Performance evaluation ; Chokes(Fuel systems) ; Injection ; Catalysts ; Air pollution control ; Automobile exhaust ; Exhaust gas recirculation systems ; Catalytic reactors(Exhaust systems)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA/APTD-1424 Research Triangle Park Library/RTP, NC 07/02/1999
ELBD ARCHIVE EPA APTD-1424 AWBERC Library/Cincinnati,OH 02/13/2024
ELCD  EPA TAEB-71-19 NVFEL Library/Ann Arbor, MI 05/07/2012 DISPERSAL
NTIS  PB-218 394 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 2, [4] leaves ; 28 cm
The exhaust emission characteristics of three prototype low-emission vehicles were investigated using standard tests. All vehicles were full sized luxury type with large displacement engines, equipped with an automatic transmission and air-conditioning. Vehicle no. 1 used a modified choke system, exhaust gas recirculation, air injection, a single catalytic reactor, and a charcoal canister to collect unburned hydrocarbons from the exhaust during the cold portion of the test. Vehicle no. 2 also had a modified choke, exhaust gas recirculation, air injection, and two catalytic reactors. Vehicle no. 3 used similar choke modifications and exhaust gas recirculation. This vehicle was equipped with air injection and a catalytic reactor. The following tests were performed: (1) Standard 1970 Federal test procedure for exhaust emissions (FTP); (2) Closed, constant volume sampling technique using nine repeats of the Federal emissions test cycle (9X7); (3) Closed, constant volume sampling technique using the LA4-S4 driving schedule as developed for 1972 and later testing. All three vehicles showed considerable emission reductions relative to present production vehicles. It is expected that a considerable driveability loss could be expected based on dynamometer evaluations.
"January 1971." "71-19." PB-218 394. APTD-1424. Cover title.