小形2サイクルエンジンの衝撃源探査 : アイドリング時の振動・騒音特性について

概要

論文の詳細を見る
Three techniques were employed, in this paper, to clarify the origin of impact noise in a two-stroke spark-ignition engine. First, the frequency analysis for a particular time segment involved in one engine cycle of vibration and noise was examined. It became possible to find the frequency characteristics of any instantaneous response which occured in an operating engine. Next, an attempt was made to identify the origin of the impact by isolating vibrations and/or eliminating parts in the drive system of the idling engine. Finally, the time history of each one-third octave band frequency component of the engine response was schematically shown to visualize the generation of vibration and noise. As a result, it became clear that the primary reduction gears in the crank case were the predominant source of the vibration and noise responses in the idling test engine.
社団法人日本機械学会の論文
1988-06-25