초록 ▼

An exhaust pipe suitable for a personal watercraft which can reduce exhaust noises, prevent a transom board from being made dirty by an exhaust gas and avoid exposing a rider trying to get onto a deck to the exhaust gas stream directly, the exhaust pipe being provided above a water line of a transom

An exhaust pipe suitable for a personal watercraft which can reduce exhaust noises, prevent a transom board from being made dirty by an exhaust gas and avoid exposing a rider trying to get onto a deck to the exhaust gas stream directly, the exhaust pipe being provided above a water line of a transom board for discharging an exhaust gas behind the personal watercraft, the exhaust pipe projects from the transom board rearward and has at least a rear portion curved downward. Consequently, an opening face provided on a rear end of the exhaust pipe is oriented obliquely rearward with respect to a water surface as seen from a side of the personal watercraft.

대표청구항 ▼

[ We claim:] [1.]1. An exhaust pipe of a personal watercraft, comprising an exhaust pipe having an outlet opening formed on a rear end thereof, the outlet opening being positioned above a water surface and behind a transom board at least during planing of the personal watercraft to discharge an exha

[ We claim:] [1.]1. An exhaust pipe of a personal watercraft, comprising an exhaust pipe having an outlet opening formed on a rear end thereof, the outlet opening being positioned above a water surface and behind a transom board at least during planing of the personal watercraft to discharge an exhaust gas behind the personal watercraft, wherein the exhaust pipe is projected from the transom board rearward, at least a rear portion of a projected portion is curved obliquely downward, and an opening face of the outlet opening provided on the rear end of the exhaust pipe is turned obliquely rearward with respect to the water surface further comprising a connecting structure of the exhaust pipe, including:a flange provided on a front end of the exhaust pipe;a second exhaust pipe provided for leading an exhaust gas discharged from an engine to the transom board in a body of the watercraft, having a flange provided on a rear end of the second exhaust pipe configured for fixing the second exhaust pipe to a transom board and for being connected to the flange of the exhaust pipe, the flanges having fixing through holes formed correspondingly for connecting the flanges to each other;an annular projected portion provided on an end face of one of the flanges for surrounding an exhaust gas passage hole in a central portion;an annular groove is formed on an end face of the other flange for surrounding an exhaust gas passage hole in a central portion to house the projected portion therein; and the flange of the second exhaust pipe and the flange of the exhaust pipe being connected by a fasteners through the fixing through holes in such a manner that the annular projected portion is housed in the annular groove.