1990-09-01

Measurement and Analysis of Gaseous Exhaust Emissions from Recreational and Small Commercial Marine Craft 901597

In general, propulsion systems used in recreational and small commercial marine craft exhibit some unique design and installation characteristics, which demand special attention from the standpoint of emissions measurement and data interpretation. For example, the exhaust system is often a compact folded design which terminates partially or completely underwater. Also, water is normally present throughout much of the exhaust ducting in order to provide cooling, noise reduction, and tailored exhaust tuning characteristics. Marine industry efforts have led to the development of a measurement standard (ICOMIA 34-88) which is being used to evaluate marine propulsion systems in anticipation of future exhaust emission regulations. This paper discusses the rationale used to develop the measurement and data analysis procedures, and presents the complete ICOMIA standard as an appendix.

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