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Emissions from Marine Engines with Water Contact in the Exhaust Stream
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English
Abstract
Recreational marine engine operation effects water quality as well as air quality. Significant quantities of hydrocarbons are discharged into the rivers, lakes, and estuaries used as recreational boating waters. In order to investigate the impact of recreational marine engine operation on water quality, a MerCruiser 3.0LX four-cylinder four-stroke inboard engine and a Mercury 650 two-cylinder two-stroke outboard engine were tested using EPA required certification procedures. Both engines were tested with exhaust gas/cooling water mixing (scrubbing) in the exhaust stream using both freshwater and saltwater. Additionally, the inboard engine was tested without exhaust scrubbing.
Gaseous emissions (HC, NOX, CO, and CO2) from the engines were continuously measured using a constant volume sampling system. Both exhaust gas and cooling water samples were collected and speciated for hydrocarbon species present. In addition, carbonyl compounds were collected by diverting a portion of the exhaust stream through dinitrophenylhydrazine (DNPH) charged cartridges. Chromatography methods were used for species identification.
Detailed descriptions of the testing apparatus, equipment, and analysis procedures used are included. Results for gaseous emissions, carbonyl compounds, and aqueous samples are reported. The results show that concerns over HC species entering the aqueous environment are justified.
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Authors
- Brian E. Mace - Department of Mechanical and Aerospace Engineering West Virginia University
- Ralph D. Nine - Department of Mechanical and Aerospace Engineering West Virginia University
- Nigel N. Clark - Department of Mechanical and Aerospace Engineering West Virginia University
- Todd J. Vanyo - Department of Chemistry West Virginia University
- Vincent T. Remcho - Department of Chemistry West Virginia University
- Richard W. Morrison - Department of Chemistry West Virginia University
- Larry W. McLaughlin - Consultant
Topic
Citation
Mace, B., Nine, R., Clark, N., Vanyo, T. et al., "Emissions from Marine Engines with Water Contact in the Exhaust Stream," SAE Technical Paper 980681, 1998, https://doi.org/10.4271/980681.Also In
References
- Coates, S.W. Lassanske G.G. “Measurement and Analysis of Gaseous Exhaust Emissions from Recreational and Small Commercial Marine Craft.” SAE Paper 901597
- Morgan, E.J. Lincoln R.H. “Duty Cycle for Recreational Marine Engines.” SAE Paper 901596
- Code of Federal Regulations Washington D.C. U.S. Government Printing Office 1997
- Trescott, E.J. et al “Advanced Emissions Speciation Methodologies for Auto/Oil Air Quality Improvement Research Program - 1. Hydrocarbons and Ethers.” SAE Paper 920320
- Siegl, W.O. et al “Improved Emissions Speciation Methodology for Phase II of the Auto/Oil Air Quality Improvement Research Program - Hydrocarbons and Oxygenates.” SAE Paper 930142
- Tejada, S.B. International Journal of Environmental Analytical Chemistry 1986 26 167 185
- Hare, C.T. et al “Exhaust Emissions from 2-Stroke Outboard Motors and Their Impact.” SAE Paper 740737