Record Display for the EPA National Library Catalog


Main Title Exhaust Emissions from Uncontrolled Vehicles and Related Equipment Using Internal Combustion Engines. Part 4. Small Air-Cooled Spark Ignition Utility Engines.
Author Har, Charles T. ; Springe, Karl J. ;
CORP Author Southwest Research Inst., San Antonio, Tex. Dept. of Automotive Research.
Year Published 1973
Report Number SwRI-AR-888; EPA-70-108; 1493;
Stock Number PB-224 885
Additional Subjects ( Small engines ; Exhaust gases) ; ( Air pollution ; Small engines) ; Nitrogen oxides ; Gasoline engines ; Four stroke cycle engines ; Two stroke cycle engines ; Particles ; Hydrocarbons ; Smokes ; Oxygen ; Formaldehyde ; Aldehydes ; Carbon monoxide ; Carbon dioxide ; Tests ; Chemical analysis ; Data tables ;
Library Call Number Additional Info Location Last
NTIS  PB-224 885 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 113p
Exhaust emissions from five gasoline-fueled, air-cooled utility engines were measured using two types of steady-state procedures, and some measurements were taken during transient operation. The engines included one and two cylinder, two and four stroke models with 2 to 18 hp. The two procedures used for small engine tests were a 9-mode procedure which was being recommended by SAE at the time the tests were run (early 1971), and a modified version of the 'EMA-California' 13-mode procedure. The exhaust products measured included hydrocarbons, CO, CO2, O2, light hydrocarbons, total aliphatic aldehydes, formaldehyde, particulate, exhaust smoke. The engines were operated on small electric dynamometers, and the emissions results are used in conjunction with statistics on utility engine population and usage to estimate national emissions impact. (Modified author abstract)