00756203

Component

https://doi.org/10.3141/1641-14

http://scholar.google.com...Vyas&publication_year=1998

Estimates of the full fuel-cycle energy and emissions effects of light-duty vehicles with tripled fuel economy (3X vehicles) as currently being developed by the Partnership for a New Generation of Vehicles are presented. Seven engine and fuel combinations were analyzed: reformulated gasoline, methanol, and ethanol in spark-ignition, direct-injection engines; low-sulfur diesel and dimethyl ether in compression-ignition, direct-injection engines; and hydrogen and methanol in fuel-cell vehicles. Results were obtained for two market share scenarios. Under the higher of the two scenarios, the fuel-efficiency gain by 3X vehicles translated directly into reductions in total energy demand, petroleum demand, and carbon dioxide emissions. The combination of fuel substitution and fuel efficiency resulted in substantial reductions in emissions of nitrogen oxide, carbon monoxide, volatile organic compounds, sulfur oxide, and particulate matter smaller than 10 microns (PM10) for most of the engine-fuel combinations examined. The key exceptions were diesel- and ethanol-fueled vehicles, for which PM10 emissions increased.

This paper appears in Transportation Research Record No. 1641, Energy, Air Quality, and Fuels 1998.

English

p. 115-122

1998

Transportation Research Record

0309065143

Figures (9) ; References (6)

Alternatives analysis; Carbon dioxide; Carbon monoxide; Compression ignition engines; Demand; Diesel fuels; Energy; Ethanol; Ethers; Forecasting; Fuel cells; Fuel conservation; Hydrogen; Light vehicles; Market share; Methanol; Nitric oxide; Nitrogen oxides; Organic compounds; Particulates; Reformulated gasoline; Spark ignition engines; Sulfur; Sulfur oxides; Volatility

Low sulfur diesel fuels; Methyl ether; Reduction (Decrease); Volatile organic compounds

Energy; Highways; Vehicles and Equipment; I96: Vehicle Operating Costs

TRIS, TRB

Nov 13 1998 12:00AM

• AIR QUALITY EFFECTS OF TRAVEL CHANGES
• ANALYSIS OF THE COST-EFFECTIVENESS OF MOTOR VEHICLE INSPECTION PROGRAMS FOR REDUCING AIR POLLUTION
• ASSESSMENT OF CAPITAL REQUIREMENTS FOR ALTERNATIVE FUELS INFRASTRUCTURE UNDER THE PARTNERSHIP FOR A NEW GENERATION OF VEHICLES PROGRAM
• COMPARATIVE EVALUATION OF THE COST-EFFECTIVENESS OF 58 TRANSPORTATION CONTROL MEASURES
• DETERMINANTS OF ALTERNATIVE FUEL VEHICLE CHOICE IN THE CONTINENTAL UNITED STATES
• DEVELOPMENT OF AN AGGREGATE FUEL CONSUMPTION MODEL FOR SIGNALIZED INTERSECTIONS
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• FREIGHT ENERGY USE DISAGGREGATED BY COMMODITY: COMPARISONS AND DISCUSSION
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• LIGHT-DUTY DIESELS: CONSUMER PERSPECTIVES AND U.S. ENERGY SUPPLY ISSUES
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