Marine propulsion – Means for accomodating or moving engine fluids – Means for handling exhaust gas
Patent
1998-10-06
2000-12-05
Morano, S. Joseph
Marine propulsion
Means for accomodating or moving engine fluids
Means for handling exhaust gas
440 38, 114 555, 114 5553, 114 5557, 60276, 60277, 60299, 60302, 60321, B63H 2132
Patent
active
061558966
ABSTRACT:
A watercraft includes a monitoring and control system to sense the operational state of a catalytic device and a cooling system used with an exhaust system of the watercraft. The monitoring and control system includes a collection port formed downstream of the catalytic device. During diagnostic testing of the engine and the catalytic device, a collection element is inserted into the collection port. A plug, however, normally closes the collection port during normal engine operation. A cover extends over the collection port and a substantial portion of the surrounding exhaust pipe. The cover, or at least a portion thereof, is readily removable so as to provide access to the collection port. The exhaust system also includes a water trap located downstream of the collection port. A foam core support member supports the water trap within a hull of the watercraft, with an insulator positioned between the support member and the water trap. The insulator, as well as the monitoring and control system, prevent damage to the support member, by isolating the support member from the heated water trap and by preventing the exhaust system from over heating.
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Morano S. Joseph
Vasudeva Ajay
Yamaha Hatsudoki Kabushiki Kaisha
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