Browse Publications Technical Papers 1999-01-3299

The Impact of Catalytic Aftertreatment on Particulate Matter Emissions from Small Motorcycles 1999-01-3299

This paper presents the results of an exploratory study examining the production of particulate matter (PM) by 2-wheel vehicles and the impact of catalytic aftertreatment on these emissions. Information is presented demonstrating the efficacy of catalytic aftertreatment for significantly reducing not only hydrocarbons (HC) and carbon monoxide (CO), but also PM emissions from motorcycles equipped with small 2-stroke engines. The generation of PM by 5 test vehicles during realistic driving conditions is discussed and the impact of catalyst performance characteristics on the reduction of these releases is examined. Vehicle based test data, obtained with a mini-dilution tunnel, clearly demonstrates the benefits to the environment achievable through the use of catalytic aftertreatment.


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