Exhaust structure for jet propulsion boat

Details Exhaust structure for jet propulsion boat Exhaust structure for jet propulsion boat

B - Operations, Transporting

63

H

B63H 21/32 (2006.01) B63B 35/73 (2006.01) B63H 11/08 (2006.01)

Patent

CA 2396451

To provide an exhaust structure for a jet propulsion engine in which exhaust noise can be lowered easily. The exhaust structure 30 for a jet propulsion boat comprises a tunnel-shaped pump chamber 16 provided at the rear portion of the hull 11, a jet pump 20 provided in the pump chamber 16, a driving engine 15 connected to the jet ump 20, and an exhaust port 33 of the exhaust pipe 31 extended from the engine 15 disposed so as to face toward the pump chamber 16. In the exhaust structure 30 of the jet propulsion boat, a sound-deadening resonator 40 is disposed in the pump chamber 16 and the exhaust pipe 31 is brought into communication with the resonator 40.

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