音響解析による舶用ディ-ゼル機関の排気弁吹き抜け異常診断

概要

論文の詳細を見る
This research aims at establishing a new diagnostic system based on the acoustic sound for marine diesel engine in order to reinforce or substitute for the engineer's diagnosis.<BR>This paper discusses to discriminate the different sounds caused by the different sizes of the cut on the exhaust valve of the two-stroke diesel engine. The acoustic sounds are transformed into the visible signals through various analyses.<BR>The distinctive signals are found at the times of the combustion and the opening and closing the exhaust valve, while the power level at the former time becomes higher as the size of the cut on the exhaust valve is increased. The analytical system proposed here is, therefore, effective to diagnose the gas leakage from the exhaust valve of the diesel engine and can be developed into a more general diagnostic system in the future.
公益社団法人日本マリンエンジニアリング学会の論文