Fuel economy of light-duty diesel vehicles
Fuel economy and emission characteristics of two light-duty diesel-powered vehicles, representing 3,500-lb and 5,500-lb passenger cars, were determined and compared to those of similar 1975 model year gasoline-powered vehicles. The diesel-powered and gasoline-powered vehicles were designed to have comparable acceleration performance. The 3,500-lb vehicle with a 247 cubic-inch-displacement (CID) diesel engine and the 5,500-lb vehicle with a 636-CID diesel engine gave respectively, 43 percent and 33 percent better combined city/highway fuel economy than similar vehicles with a 250-CID and 440-CID 1975 model year gasoline engines. In the 3,500-lb vehicle, emissions both from the diesel and gasoline engine were below the 1976 Federal emission standard. Emissions from the 5,500-lb vehicle both with the diesel and with the gasoline engine exceeded the 1976 standard. Additional work was done with a 3,500-lb vehicle (198-CID diesel) and a 247-CID diesel engine mounted on a dynamometer stand using turbocharging, combined supercharging/turbocharging and varied engine-to-vehicle speed ratio as experimental variables. The results in terms of fuel economy, emissions, and vehicle performance are discussed.
- OSTI ID:
- 7339252
- Report Number(s):
- CONF-760868-1
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison of fuel economy and emissions for diesel and gasoline powered taxicabs. Final report, June 1976-April 1979
Fuel economy of heavy duty vehicles
Related Subjects
330102* -- Internal Combustion Engines-- Diesel
330701 -- Emission Control-- Nitrogen Oxides
330702 -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COMPRESSORS
DIESEL ENGINES
DYNAMOMETERS
ENGINES
EXHAUST GASES
FUEL ECONOMY
GASEOUS WASTES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
SPARK IGNITION ENGINES
SUPERCHARGERS
TESTING
VEHICLES
WASTES