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Beyond 3 Star Emission Capability for Outboard Engines
Technical Paper
2007-32-0052
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English
Abstract
This paper investigates strategies intended for development towards Super Ultra Low emission levels (4 Star) from the existing 3 Star emission status for 2 stroke Direct Injection and 4 stroke outboard engines. The current 5 Mode ICOMIA outboard emission status is considered for Hydrocarbons, Nitrogen Oxides and Carbon Monoxide. From these a gap analysis is developed and possible strategies to close the gaps are considered. The potential of these strategies for 2 stroke air assisted Direct Injection outboards is reviewed together with supporting data where appropriate. Initial data show high potential for reduction of emission levels beyond the 3 Star standard, whilst further work will confirm the levels that may be feasible in a production outboard engine.
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Authors
Citation
BELL, G., BREWSTER, S., and AHERN, S., "Beyond 3 Star Emission Capability for Outboard Engines," SAE Technical Paper 2007-32-0052, 2007.Also In
References
- http://www.epa.gov/otaq/regs/nonroad/marinesi-equipld/420d07004chp11.pdf EPA “Control of Emissions from Marine SI and Small SI Engines, Vessels, and Equipment Draft Regulatory Impact Analysis Chapter 11 Regulatory Alternatives”
- http://www.arb.ca.gov/planning/sip/2007sip/apr07draft/sipmeas.pdf ARB “Draft Air Quality Plan” 92
- http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=d87b4320f07cbcf1ebba04419e8a910e&rgn=div8&view=text&node=40:20.0.1.1.5.2.1.5&idno=40 eCFR Title 40-91.105
- ARB “CALIFORNIA CODE OF REGULATIONS, TITLE 13. Motor Vehicles, Chapter 9. Off-road Vehicles and Engines Pollution Control Devices, Article 4.7. Spark-Ignition Marine Engines” A25
- http://www.epa.gov/otaq/models/nonrdmdl/nonrdmdl2005/420r05023.pdf EPA “Nonroad Spark-Ignition Engine Emission Deterioration Factors”
- http://www.epa.gov/otaq/certdata.htm#marinesi US EPA “Engine Certification Data”
- http://www.epa.gov/otaq/regs/nonroad/marinesi-equipld/420d07004chp4.pdf US EPA “Control of Emissions from Marine SI and Small SI Engines, Vessels, and Equipment Draft Regulatory Impact Analysis Chapter 4 Feasibility of Exhaust Emission Control”
- Strauss S. Zeng Y. Montgomery D.T. “Optimisation of the ETEC Combustion System for Direct-Injected Two-Stroke Engines Towards 3-Star Emissions” SAE paper 2003-32-007 / 20034307
- Bell G. Finucci C. “Exhaust Emissions Sensitivities with Direct Injection on a 50cc Scooter” SAE Paper 970365
- Fujimoto, H. Isogawa, A. Matsumoto, N “Catalytic Converter Applications for Two Stroke, Spark-Ignited Marine Engines,” SAE Paper 951814
- Houston R Archer M Moore M Newman R “Development of a Durable Emission Control System for an Automotive Two-Stroke Engine” SAE Paper 960361
- Jaimee A Schneider D A Rozmanith A I Sjoberg J W “Thermal Reactor - Design, Development and Performance” SAE Paper 710293