초록 ▼

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 tes

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.

대표청구항 ▼

[ What is claimed is:] [1.] A watercraft comprising a body, an internal combustion engine having at least one exhaust port and an output shaft and being mounted within the body, a propulsion device driven by the engine output shaft, an exhaust system including an exhaust passage that extends between

[ What is claimed is:] [1.] A watercraft comprising a body, an internal combustion engine having at least one exhaust port and an output shaft and being mounted within the body, a propulsion device driven by the engine output shaft, an exhaust system including an exhaust passage that extends between the engine exhaust port and a discharge port, a catalytic device to treat exhaust gases from the engine before discharge through the discharge port, an exhaust gas collection port formed in the exhaust system, and a cover being positioned between the body and at least a portion of the exhaust system and extending over the collection port, at least a portion of the cover being removable so as to provide access to the collection port.