Record Display for the EPA National Library Catalog


Main Title Exhaust Emissions from Uncontrolled Vehicles and Related Equipment Using Internal Combustion Engines. Part 3: Motorcycles.
Author Har, Charles T. ; Springe, Karl J. ;
CORP Author Southwest Research Inst., San Antonio, Tex.
Year Published 1973
Report Number EPA-70-108; 1492;
Stock Number PB-224 884
Additional Subjects ( Motorcycles ; Exhaust gases) ; ( Air pollution ; Motorcycles) ; Particles ; Formaldehyde ; Aldehydes ; Hydrocarbons ; Carbon monoxide ; Carbon dioxide ; Nitrogen oxides ; Smokes ; Oxygen ; Tests ; Road tests ; Chemical analysis ; Data tables ; Sulfur oxides ; Small engines ;
Library Call Number Additional Info Location Last
NTIS  PB-224 884 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 174p
Exhaust emissions from seven motorcycles were measured using three separate procedures for each bike. The first procedure used for the motorcycle tests was the Federal '7-mode' direct sampling procedure (applicable to 1970 and 1971 model year light duty vehicles), modified where necessary. The motorcycles were also tested on the Federal 'LA-4' bag sampling procedure (applicable to 1972 and newer light duty vehicles), modified as necessary. The final procedure used was a series of steady-state conditions designed to cover the range of operating conditions experienced by each motorcycle. The exhaust products measured during the steady-state tests included: total hydrocarbons; light hydrocarbons; CO; CO2; NO; NOx; O2; total aliphatic aldehydes and formaldehyde; particulate; and exhaust smoke. The motorcycles were operated on a modified automotive chassis dynamometer, and the emissions results are used in conjunction with statistics on motorcycle population and usage to estimate national emissions impact.