Record Display for the EPA National Library Catalog


Main Title Study of Mandatory Engine Maintenance for Reducing Vehicle Exhaust Emissions. Volume IV. Experimental Characterization of Vehicle Emissions and Maintenance States.
CORP Author TRW Systems Group, Redondo Beach, Calif.
Year Published 1972
Report Number APRAC-CAPE-13-68; 13-68-10;
Stock Number PB-220 729
Additional Subjects ( Air pollution ; Exhaust gases) ; ( Automobiles ; Inspection) ; ( Automobile engines ; Exhaust gases) ; Maintenance ; Data ; Tests ; Spectrum signatures ; Carbon monoxide ; Hydrocarbons ; Nitrogen oxides ; Measurement ; Surveys ; Gas sampling ; Experimental design ; Motor vehicle inspection ; Automobile exhaust ; Air pollution abatement
Library Call Number Additional Info Location Last
NTIS  PB-220 729 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 527p
The Economic Effectiveness Model is a tool by which any state, air basin, or region can determine the most effective vehicle maintenance and inspection program to reduce vehicle exhaust emission contributions to air pollution. Three distinct experimental programs were conducted to characterize vehicle emissions and maintenance states: (1) A large scale fleet evaluation to determine vehicle engine parameter setting distributions and component deterioration characteristics with time and mileage; (2) Statistically designed test (orthogonal experiments) of 1971 California and pre-emission controlled vehicles to determine the main effects and first order interactions of emission response to engine parameters; and (3) A survey to determine the maintenance condition (state of tune-up) of vehicle engine tune-up parameters and emission control systems and components of vehicles in the Detroit area. The designs and results of each of these experiments are discussed.