This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Small Engine Emissions and Their Impact
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1973 by SAE International in United States
Annotation ability available
In an attempt to characterize emissions from small air-cooled utility engines, five gasoline-fueled models were operated over a variety of speeds and loads, and important exhaust constituents were measured. These emissions included hydrocarbons, CO, CO2, NO, O2, aldehydes, light hydrocarbons, particulates, and smoke. Emissions of SOx were estimated on the basis of the fuel consumed; evaporative losses of hydrocarbons were also estimated. The impact of small engine emissions was calculated on the basis of the test results and information on national engine populations and usage. From these data, it appears that the 50 million or more small engines currently being used account for only a small part of pollutants from all sources.
CitationHare, C., Springer, K., Oliver, W., and Houtman, W., "Small Engine Emissions and Their Impact," SAE Technical Paper 730859, 1973, https://doi.org/10.4271/730859.
- Hare Charles T. and Springer K.J., “Small Engine Emissions and Their Impact.” Automotive Engineering, Vol. 80, No. 7 (July 1972).
- Hare CT. and Springer K. J., “Exhaust Emissions from Uncontrolled Vehicles and Related Equipment Using Internal Combustion Engines.” Final Report, Part 4, Small Air-Cooled Spark Ignition Utility Engines, Contract EHS 70-108, May 1973.
- Sawicki E. et al., “The 3-Methyl-3-Benzathiazalone Hydrazone Test.” Anal. Chem., Vol. 33 (1961), p. 93.
- Altshuller A. P. et al., “Determination of Formaldehyde in Gas Mixtures by the Chromotropic Acid Method.” Anal. Chem., Vol. 33 (1961), p. 621.
- Spindt R. S., “Air-Fuel Ratios from Exhaust Gas Analysis.” SAE Transactions, Vol. 74 (1966), paper 650507.
- Federal Register, Vol. 37, No. 221, Part II, Subpart J (Nov. 15, 1972).
- Wade D. T., “Factors Influencing Vehicle Evaporative Emissions.” SAE Transactions, Vol. 76, paper 670126.
- Clarke P. J. et al., “An Adsorption-Regeneration Approach to the Problem of Evaporative Control.” SAE Transactions, Vol. 76, paper 670127.
- Petroleum Products Survey No. 73, U.S. Department of the Interior, Bureau of Mines, January 1972.
- “Optical Properties and Visual Effects of Smoke-Stack Plumes.” A Cooperative Study: Edison Electric Institute and U.S. Public Health Service, Publication 999-AP-30, Cincinnati, 1967.
- . Press releases from Outdoor Power Equipment Institute, Inc., 11/28/72, 12/1/71, 12/22/70, 1/12/70, 12/6/68; 734-1 5th Street Northwest, Washington, D. C. 20005.
- Implement & Tractor magazine, issues of 1/7/73, 4/7/72, 1/21/71, 5/21/70, 8/21/69, and others.
- “Machines and Equipment on Farms with Related Data, 1964 and 1959.” Statistical Bulletin 401, Economic Research Service, U.S. Department of Agriculture, May 1967.
- “Internal Combustion Engines, 1968.” U.S.Department of Commerce, Bureau of the Census, 1970.
- Eccleston B. H. and Hum R. W., “Exhaust Emissions from Small, Utility, Internal Combustion Engines.” SAE Transactions, Vol. 81 (1972), paper 720197.
- Donahue J. A. et al., “Small Engine Exhaust Emissions and Air Quality in the United States,” SAE Transactions, Vol. 81 (1972), paper 720198.
- “Internal Combustion Engines, 1969.” U.S.Department of Commerce, Bureau of the Census 1971.
- “Internal Combustion Engines 1970.” U.S.Department of Commerce, Bureau of the Census, 1972.
- “1970 EPA Air Pollutant Inventory Estimates.” Annual Report of the Council on Environmental Quality.
- Long Luman H.(ed.), “The World Almanac,” 1972 ed. New York: Newspaper Enterprise Association, Inc., 1971.