EXHAUST APPARATUS FOR SMALL BOAT

To provide an exhaust apparatus for a small boat in which exhaust noise is satisfactorily reduced. A water muffler is provided at a midsection of the exhaust pipes extending from an engine which is provided in a boat body, the interior of the water muffler is partitioned into an expansion chamber an...

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Hauptverfasser: MATSUMOTO, MASATSUGU, HANAI, TOSHINORI
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung:To provide an exhaust apparatus for a small boat in which exhaust noise is satisfactorily reduced. A water muffler is provided at a midsection of the exhaust pipes extending from an engine which is provided in a boat body, the interior of the water muffler is partitioned into an expansion chamber and a resonator chamber, and a front exhaust pipe connected to the engine and a rear exhaust pipe opening out of the boat are interlinked with the expansion chamber, and the resonator chamber is directly connected to the midsection o f the rear exhaust pipe via a connecting pipe. The water muffler is arranged i n such a manner that the longitudinal direction thereof is oriented in the fore--and-aft direction so as to extend along the side of a pump chamber in which a jet pump driven by the engine is arranged, and a second resonator chamber is arranged along the water muffler on the outer side of the water muffler.