Record Display for the EPA National Library Catalog


Main Title A report on the exhaust emissions from a turbocharged Volkswagen /
Author Thomson, John C.
CORP Author Environmental Protection Agency, Ann Arbor, Mich. Bureau of Mobile Source Pollution Control.
Publisher Bureau of Mobile Source Pollution Control, Office of Air Programs, Environmental Protection Agency,
Year Published 1971
Report Number 71-28; TAEB-71-28; APTD-1415
Stock Number PB-218 423
OCLC Number 41124169
Subjects Turbochargers ; Automobiles--Motors--Exhaust gas--United States
Additional Subjects ( Automobile engines ; Air pollution control equipment) ; Exhaust gases ; Air pollution ; Performance evaluation ; Superchargers ; Turbomachinery ; Air pollution control ; Automobile exhaust ; Retrofit devices
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA/APTD-1415 Research Triangle Park Library/RTP, NC 04/09/1999
ELBD ARCHIVE EPA APTD-1415 AWBERC Library/Cincinnati,OH 01/29/2024
ELCD  EPA TAEB-71-28 NVFEL Library/Ann Arbor, MI 05/07/2012 DISPERSAL
NTIS  PB-218 423 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 3, [4] leaves ; 28 cm
An evaluation of turbocharging and its effect on emissions was conducted on a 1971 Volkswagen that was equipped with a turbocharger retrofit package that consisted of a new exhaust system, a revised heater system and minor changes to fuel, oil and vacuum lines. The vehicle was a standard model using a four-speed manual transmission. The engine is a four-cylinder air-cooled opposed cylinder with 96 cu. in. displacement. The turbocharged vehicle was tested initially with the air concentration jet in the carburetor plugged and with a high idle CO concentration of 2.5 percent. The carburetor was then adjusted to 0.6 percent idle CO and with stock air correction jet reinstalled. The vehicle was tested without the turbocharger with idle CO set at 0.6 percent. The emission performance of the turbocharged engine was evaluated and its results were compared against the standard engine by using the 1972 Federal test procedure with a constant volume sampling system and the 1970 Federal test procedure using the 7-mode driving cycle. A standard performance test was also run. Results indicate that the turbocharger installation has no adverse effect on emissions when properly installed and adjusted.
"May 1971." "71-28." PB-218 423. APTIC No. 49627.