OXIDATION CATALYTIC CONVERTER SYSTEM FOR SMALL SPARK IGNITED ENGINES

摘要

An oxidation catalytic converter system for small spark ignited engines includes a housing containing a catalyst, an inlet for receiving exhaust gases f rom the engine, and an outlet for discharge of the exhaust gases from the housing after passing through the catalyst. Attached to the engine exhaust is a jet pipe that extends into the inlet in noncontacting relation to the housing, whereby the catalytic converter is vibrationally isolated from the jet pipe. Surrounding the jet pipe is an annula r air gap through which ambient air is drawn into the housing and mixed with the exhaust g ases for enhanced cooling and catalyst performance.