This report describes procedures for estimating the rate of air pollutant emissions from transportation systems. Emission factors and computation techniques for motor vehicles, railroad locomotives, aircraft, and waterborne vessels are presented. The major emphasis is on motor vehicle emission computations; and data on model year emission rates, control device deterioration, and vehicle speed adjustments are given. Procedures for separating cold start effects computing evaporative emissions by source, and developing modewise emission factors are presented. TREFACT, a computer program designed to calculate motor vehicle emission factors, is described.


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    Representativity of exhaust pollutant concentrations for measuring pollutant emissions from passenger cars

    Van Ruymbeke,C. / Journard,R. / Vidon,R. et al. | Kraftfahrwesen | 1995


    Representativity of Exhaust Pollutant Concentrations for Measuring Pollutant Emissions from Passenger Cars

    Pruvost, Christophe / Van Ruymbeke, Claire / Joumard, Robert et al. | SAE Technical Papers | 1995



    Modeling the Pollutant Emissions from a S.I. Engine

    Onorati, A. / D'Errico, G. / Ferrari, G. et al. | SAE Technical Papers | 2002


    Methodologies for estimating air pollutant emissions from ships

    Trozzi, C. / Vaccaro, R. | Tema Archiv | 1998