The measurement and control of outboard motor

모타보트의 소음 측정 및 대책

In this paper, the sound radiation level of parts of a O.B. Motor was measured and analyzed by the measurement method using wave-guide reverberation environment. Based on the above measurement results, a noise control was established for engine cover and exhaust silencer and its effects were compared and analyzed. The noise control method increased transmission loss by painting GELNAC on the engine cover and extend exhaust pipe to reach under water.