Potential of spark ignition engine for increased fuel efficiency. Final report, January-October 1978

Technical Report · Wed Oct 01 00:00:00 EDT 1980

OSTI ID:5885252

Taylor, T Jr; Cole, D; Bolt, J A

The objective of this study was to assess the potential of the spark ignition engine to deliver maximum fuel efficiency at 1981 Statutory Emission Standards in the 1983-1984 timeframe and beyond that to 1990. Based on the results of an extensive literature search, manufacturer's known product plans, and fuel economies of 1978 engines as a baseline, proposed methods of attaining fuel economy while complying with the future standards were ascertained. Methods of engine control optimization, engine design optimization as well as methods of varying engine parameters were considered. The potential improvements in fuel economy associated with these methods, singly and in combination, were determined and are expressed as percentage changes of the fuel economy of the baseline engines. A summary of the principal conclusions are presented, followed by a description of the engine baseline reference, analysis and projection of fuel economy improvements, and a preliminary assessment of the impact of fuel economy benefits on manufacturing cost.

• Research Organization: Corporate-Tech Planning, Inc., Waltham, MA (USA)
• OSTI ID: 5885252
• Report Number(s): PB-81-158875
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
SPARK IGNITION ENGINES
FUEL ECONOMY
AIR POLLUTION
AUTOMOBILES
AUTOMOTIVE FUELS
CARBURETORS
CONTROL SYSTEMS
EXHAUST GASES
FUEL CONSUMPTION
MICROPROCESSORS
OPTIMIZATION
STANDARDS
COMPUTERS
ELECTRONIC CIRCUITS
ENERGY CONSUMPTION
ENGINES
FLUIDS
FUEL SYSTEMS
FUELS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MICROELECTRONIC CIRCUITS
POLLUTION
VEHICLES
WASTES
330101* - Internal Combustion Engines- Spark-Ignition