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Sensitivity of Test Cycle and Fuel Type on a Spark-ignition Four-Stroke Inboard Marine Engine
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Abstract
An inboard marine engine was tested on a dynamometer for exhaust emissions. This paper gives some insight into the characterization of baseline emissions for a new marine inboard engine as well as potential emission reductions through the use of oxygenated fuels. As the percentage of alcohol in the fuel increased, HC and CO decreased and Nox increased without a significant change in power. Fuel consumption also increased slightly.
In addition, the sensitivity of the test cycle on exhaust emissions was investigated using four transient and two steady-state cycles. Only HC seemed to be affected by the amount of transience added.
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Citation
Samulski, M., "Sensitivity of Test Cycle and Fuel Type on a Spark-ignition Four-Stroke Inboard Marine Engine," SAE Technical Paper 941782, 1994, https://doi.org/10.4271/941782.Also In
References
- Samulski, M. ‘Sensitivity of Test Cycle and Fuel Type on a Crusader 350 Inboard Marine Engine; Test Results - 1992.” May 26 1993
- Code of Federal Regulations (CFR)
- Morgan E. Lincoln, R. “Duty Cycle for Recreational Marine Engines.” SAE Paper 901596
- Coates, S. Lassanske, G. “Measurement and Analysis of Gaseous Exhaust Emissions from Recreational and Small Commercial Marine Craft.” SAE Paper 901597
- “Exhaust Gas Regulations for Marine Engines.” International Bodensee Shipping Commission June 4 1991
- Doorlag, M. Samulski, M. “Heavy-Duty Engine Testing Report Non-Road Engine Configurations; Test Results - 1991.” NTIS Order Number PB 94-162450 July 8 1992