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Emission Control of a Propane Fueled Small Utility Engine Utilizing Air/Fuel Ratio Control and Three-Way Catalyst
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English
Abstract
A gaseous fuel emission control system which includes a three-way catalyst for the after treatment of exhaust gases has been developed for a 398 cc, four-stroke, air-cooled, spark ignition, overhead valve utility engine. The fuel delivery system utilized analog closed-loop air/fuel ratio control to maintain a narrow operating band about the stoichiometric air/fuel ratio. Using liquified petroleum gas (LPG) as the fuel, carbon monoxide emissions tested per CARB modal weighting factors were reduced by 98% and HC + NOx were reduced 62%. The emission levels were below the CARB 1995 Iimits. The emission control system shows considerable promise for controlling carbon monoxide emissions for indoor applications. The system was developed for gaseous fuels only where the engine can be run at the stoichiometric air/fuel ratio.
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Authors
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Citation
Luhman, D., "Emission Control of a Propane Fueled Small Utility Engine Utilizing Air/Fuel Ratio Control and Three-Way Catalyst," SAE Technical Paper 932445, 1993, https://doi.org/10.4271/932445.Also In
References
- Taylor, Kathleen C. 1984 Automobile Catalytic Convertors New York Springer - Verlag 6
- AC Rochester Exhaust Sensor Engineering Department 1991 The Exhaust Oxygen Sensor Book AC Rochester Division Flint, Michiglan
- Taylor, Kathleen C. 1984 Automobile Catalytic Convertors New York Springer - Verlag 13 14
- Taylor, Kathleen C. 1984 Automobile Catalytic Convertors New York Springer - Verlag 7
- AC Rochester Exhaust Sensor Engineering Department 1991 The Exhaust Oxygen Sensor Book AC Rochester Division Flint, Michigan
- Cotton, Kenneth J. “A Study of the Potential of Propane Fuel to Reduce Utility Engine Exhaust Emissions” SAE Paper 921696 Milwaukee September 1992
- “Test Procedure for the Measurement of Exhaust Emissions from Small Utility Engines” SAE J1088 Society of Automotive Engineers June 1983
- “California Regulations for 1995 and Later, Utility and Lawn and Garden Equipment Engines.” March 20 1992 April 8 1993
- Braker, William Mossman Allan L. 1971 5th Matheson Gas Data Rook Matheson Gas Products
- Taylor, Kathleen C. 1984 Automobile Catalytic Convertors New York Springer - Verlag 35
- Taylor, Kathleen C. 1984 Automobile Catalytic Convertors New York Springer - Verlag 36