EXHAUST SYSTEM FOR SMALL WATERCRAFT

An exhaust system for a small watercraft for effectively reducing exhaust noise and allowing a high output of an engine to be easily obtained at the time of high speed operation. An exhaust outlet of an exhaust pipe extending from an engine provided in a watercraft body is disposed at a position tha...

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Bibliographic Details
Main Authors HANAI TOSHINORI, SHOGASE HAJIME, MATSUMOTO MASATSUGU
Format Patent
LanguageEnglish
Published 17.09.2009
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
EQUIPMENT FOR SHIPPING
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MARINE PROPULSION OR STEERING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
STEAM ENGINES
TRANSPORTING
WEAPONS
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Summary:An exhaust system for a small watercraft for effectively reducing exhaust noise and allowing a high output of an engine to be easily obtained at the time of high speed operation. An exhaust outlet of an exhaust pipe extending from an engine provided in a watercraft body is disposed at a position that allows it to sink in the water at the time when a travel speed of the watercraft body is a predetermined speed or less. The exhaust outlet is raised above the water at the time when the travel speed of the watercraft body exceeds the predetermined speed. An open surface of the exhaust outlet is offset toward a side wall surface of a pump chamber from a center of a jet pump in the pump chamber and is made oblique toward the side wall surface toward which the open surface of the exhaust outlet is offset.
Bibliography:Application Number: US20090393636