This report describes the laboratory and statistical results of Task Number 10. Five light duty vehicles present and projected vehicle populations and emission control systems were used to investigate emission and fuel economy sensitivity to changes in current test procedures for light duty vehicles. The length of soak period preceding the EPA Urban Dynamometer Driving Schedule (UDDS), and the speed versus time characteristics of the UDDS and EPA Highway Fuel Economy Test (FET) were varied. A 't' test was used to test for significant differences between baseline results and results obtained with modified driving cycles. Means, standard deviations, and coefficients of variation were calculated for groups of tests for each particular vehicle at each test condition.
Emission and fuel economy sensitivity to changes in light duty vehicle test procedures
Ansprechempfindlichkeit der Messungen fuer die Schadstoffemission und des Kraftstoffverbrauchs bei Aenderungen der Pruefverfahren bei leichten Kraftfahrzeugen
US Government Research Reports ; May ; 1-252
1977
252 Seiten
Report
Englisch
Emissions and Fuel Economy Test Methods and Procedures For Light Duty Motor Vehicles-A Critique
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