Exhaust structure of personal watercraft

摘要

Disclosed is an exhaust structure of a jet-propulsion personal watercraft adapted to eject water pressurized and accelerated by a water jet pump from an outlet port so as to be propelled as the resulting reaction, which is configured to cause an exhaust gas from an engine for driving the water jet pump to be discharged to outside of the watercraft through an exhaust passage constituted by a water muffler, and the like. The exhaust structure is configured to cause the exhaust gas from the engine to flow into a pump room through a hollow portion partially or entirely formed in a pump cover covering a pump room that contains the water jet pump from a bottom side of the watercraft and to be discharged to outside of the watercraft through the pump room. The exhaust structure is advantageously capable of producing a high muffling effect and preventing water ingress into the exhaust passage even when the watercraft is inverted.