Lead-compatible emission controls: a route to improved fuel economy. (FL-74-60)
Conference
·
OSTI ID:7104924
The Turbulent Flow Manifold, a new development, improves fuel vaporization and fuel-air mixing so that mixture distribution is markedly improved over the production manifold. The Turbulent Flow System (TFS) combines the new manifold, a production carburetor that has been modified for lean operation, and optimum ignition timing advance to achieve low emissions, along with good fuel economy and driveability. Six cars have been equipped with TFS alone up to this time. All have achieved emission levels below the 1975-76 U.S. 49-state standards. When TFS was combined with exhaust port liners, emission levels below the 1975-76 California standards were achieved. The port liners were particularly effective in reducing hydrocarbons. Two 1971 cars of the same make and model, one having a standard 8.6:1 compression ratio and one having a modified 9.6:1 compression ratio, were developed as lean reactor low-emission cars and designed to run on regular-grade and premium-grade fuels, respectively. Emission levels (g/mile) were about 0.6 HC, 5.0 CO, and 1.8 NO/sub x/, easily achieving the levels of the 1975-76 California standards. The fuel economy of the higher-compression car was 4% to 11% better than that of the car having the standard compression ratio, the greatest improvement being found in the highway driving cycle.
- Research Organization:
- Ethyl Corp., Ferndale, MI (USA). Research Lab.
- OSTI ID:
- 7104924
- Report Number(s):
- CONF-741146-9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
330603* -- Vehicle Design Factors-- Engine System
AIR POLLUTION ABATEMENT
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DESIGN
ELEMENTS
ENGINES
EVAPORATION
EXHAUST GASES
FLUID FLOW
FUEL ECONOMY
FUEL SYSTEMS
GASEOUS WASTES
HYDROCARBONS
IGNITION
INTERNAL COMBUSTION ENGINES
LEAD
METALS
MIXING
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PHASE TRANSFORMATIONS
POLLUTION ABATEMENT
SPARK IGNITION ENGINES
TESTING
TURBULENT FLOW
VEHICLES
WASTES
330603* -- Vehicle Design Factors-- Engine System
AIR POLLUTION ABATEMENT
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DESIGN
ELEMENTS
ENGINES
EVAPORATION
EXHAUST GASES
FLUID FLOW
FUEL ECONOMY
FUEL SYSTEMS
GASEOUS WASTES
HYDROCARBONS
IGNITION
INTERNAL COMBUSTION ENGINES
LEAD
METALS
MIXING
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PHASE TRANSFORMATIONS
POLLUTION ABATEMENT
SPARK IGNITION ENGINES
TESTING
TURBULENT FLOW
VEHICLES
WASTES