A Study on the Theoretical Calculation of the Exciting Harmonics for Torsional Vibration of Diesel Engine Shafting

디젤엔진 축계 비틀림진동 기진력 하모닉스의 이론적 계산에 관한 연구

In this paper, the combustion characteristics of marine diesel engines are investigated. Also, the pv diagrams of diesel engine and the torque harmonic coefficients are calculated. Their reliability are verified by comparing the calculated values with those of engine maker. The calculated results of torsional vibration with these theoretical harmonic coefficients show very good agreement with those of engine maker's results. The results of this study may be useful for the calculation of torsional vibration for diesel engine propulsion shafting, especially for 4-stroke engine which is not easy to get harmonics.