Exhaust structure for a jet propulsion watercraft
First Claim
1. An exhaust structure for a jet propulsion watercraft wherein a water jet propeller is provided in a pump room of a watercraft body and an engine for driving is connected to said water jet propeller, and an exhaust opening of an exhaust pipe attached to said engine is exposed to a pump room comprising:
- a resonator for sound deadening, said resonator being operatively connected to said exhaust pipe;
said resonator being bent in a meandering state wherein bent portions thereof are positioned adjacent to each other so that said entire resonator has a substantially flat plate-like configuration.
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Accused Products
Abstract
To provide an exhaust structure for a jet propulsion watercraft which can simply achieve a reduction of the exhaust noise. In the exhaust structure for a jet propulsion watercraft, a water jet propeller is provided in a pump room of a watercraft body. An engine for driving the watercraft is connected to the water jet propeller. An exhaust opening of an exhaust pipe is attached to the engine and is exposed to a pump room. A resonator for sound deadening is provided for the exhaust pipe. Further, in the exhaust structure for a jet propulsion watercraft, the resonator is bent in a meandering state such that bent portions thereof are positioned adjacent to each other so that the entire resonator has a substantially flat plate-like configuration. The resonator having a plate-like configuration is laid along a ceiling wall of the pump room.
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Citations
24 Claims
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1. An exhaust structure for a jet propulsion watercraft wherein a water jet propeller is provided in a pump room of a watercraft body and an engine for driving is connected to said water jet propeller, and an exhaust opening of an exhaust pipe attached to said engine is exposed to a pump room comprising:
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a resonator for sound deadening, said resonator being operatively connected to said exhaust pipe;
said resonator being bent in a meandering state wherein bent portions thereof are positioned adjacent to each other so that said entire resonator has a substantially flat plate-like configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An exhaust structure for a jet propulsion watercraft comprising:
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a watercraft body;
an exhaust pipe, said exhaust pipe being adapted to be connected to an engine for said watercraft body;
an exhaust opening for said exhaust pipe, said exhaust opening being in communication with an area within said watercraft body; and
a resonator for sound deadening, said resonator being operatively connected to said exhaust pipe;
said resonator being bent in a meandering state wherein the bent portions thereof are positioned adjacent to each other so that said entire resonator has a substantially flat plate-like configuration. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification