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Fuel economy and exhaust emissions characteristics of diesel vehicles: test results of a prototype Fiat 131 NA 2. 4 liter automobile

Technical Report ·
OSTI ID:6247354

The results obtained from fuel economy and emission tests conducted on a prototype Fiat 131 naturally-aspirated diesel vehicle are presented. The vehicle was tested on a chassis dynamometer over selected drive cycles and steady-state conditions. Two fuels were used, a US No. 2 diesel and a European diesel fuel. The vehicle was tested with retarded timing and with and without an oxidation catalyst. Particulate emission rates were calculated from dilution tunnel measurements and large volume particulate samples were collected for biological and chemical analysis. It was determined that while the catalyst was generally effective in reducing hydrocarbon and carbon monoxide levels, it was also a factor in increasing particulate emissions. Increased particulate emission rates were particularly evident when the vehicle was operated on the European fuel which has a high sulfur content.

Research Organization:
Department of Transportation, Washington, DC (USA). Research and Special Programs Administration
DOE Contract Number:
AI01-80CS50194
OSTI ID:
6247354
Report Number(s):
DOE/NASA/2817-1; NASA/CR-165281; DOT/TSC/NASA-81-1; ON: DE82000876
Country of Publication:
United States
Language:
English