| Main Title |
Emission and Fuel Economy Sensitivity to Changes in Light Duty Vehicle Test Procedures. |
| Author |
Srubar., Robert L. ;
|
| CORP Author |
Southwest Research Inst., San Antonio, Tex.;Environmental Protection Agency, Ann Arbor, Mich. Emission Control Technology Div. |
| Year Published |
1977 |
| Report Number |
EPA-68-03-2196; SwRI-11-4291-007; EPA/460/3-77/024; |
| Stock Number |
PB-277 343 |
| Additional Subjects |
Fuel economy ;
Air pollution control ;
Exhaust emissions ;
Fuel consumption ;
Tests ;
Hydrocarbons ;
Carbon monoxide ;
Nitrogen oxides ;
Concentration(Composition) ;
Tables(Data) ;
Light duty vehicles
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-277 343 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
252p |
| Abstract |
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. |
