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Emission Factors for Small Utility Engines
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English
Abstract
A major gap exists in available baseline emissions data on the small utility engine population between the mid-1970's and present day. As part of the input required for a standard-setting process, the California Air Resources Board has funded limited laboratory emission measurements on a number of modern small engines, both 2-stroke and 4-stroke designs. Exhaust constituents characterized in this study include total hydrocarbons, reactive hydrocarbons (RHC), methane, CO, NOx, CO2, O2, aldehydes, and particulate matter. A total of nine engines were evaluated, spanning the range from the smallest widely-used 2-strokes (about 20 cc displacement) to 4-strokes approaching 20 hp.
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Citation
White, J., Carroll, J., Hare, C., and Lourenco, J., "Emission Factors for Small Utility Engines," SAE Technical Paper 910560, 1991, https://doi.org/10.4271/910560.Also In
References
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- “Notice of Public Hearing To Consider Regulations Regarding The California Exhaust Emission Standards And Test Procedures For 1994 And Subsequent Model Utility And Lawn And Garden Equipment Engines,” California Air Resources Board October 16 1990
- Code of Federal Regulations July 1 1989