Analysis of Influence of Counterweight Arrangement on Vibration and Noise of Diesel Engine
Based on EXCITE-Powerunit software,a multi-body dynamics model of the whole machine was established to anal-yse the variation of main bearing load and friction loss,crankshaft strength and vibration and noise characteristics of the whole machine under the same balancing rate of different counterweights crankshafts.The results of the study show that the bearing loads of both counterweights crankshafts peak at the moment of in-cylinder burst pressure and the average friction losses are the same.Minimum safety factors of 1.93 and 2.01 for a four and eight counterweights crankshaft respectively;within 500Hz fre-quency,the four counterweights crankshaft has less effect on engine vibration,and within(500～3000)Hz frequency,the eight counterweights has less effect on engine vibration,and the eight counterweights crankshaft has less effect on the sound power level of the surface of the engine body The sound power level on the surface of the engine body is 93.83dB.
Diesel EngineCounterweightsSafety FactorVibration and Noise
NETL
NSTL
万方数据
维普
