Exhaust cleaning system for marine propulsion engine
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United States of America Patent
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Sep 17, 2002
Grant Date -
N/A
app pub date -
Nov 21, 1996
filing date -
Jul 10, 1992
priority date (Note) -
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Abstract
An exhaust cleaning system for a marine propulsion engine that includes a catalyst positioned within a tube that communicates with an expansion chamber. A cooling jacket extends around at least a portion of the exhaust system and the liquid coolant is discharged into the exhaust system for flow with the exhaust gases. A number of different arrangements are shown for precluding the coolant from flowing back into the exhaust system and contacting the catalyst bed either when the watercraft is inverted and righted or in the event the engine is stopped and restarted.
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