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随着柴油机强化程度的不断提高,激起曲轴及传动轴系产生扭转振动的干扰力矩数值也在不断增长。为了防止扭振故障的产生,近年来生产的船用柴油机,特别是中速、高速柴油机大多装有减振器——如卷簧式减振器、硅油簧片式减振器、硅油橡胶减振器或硅油减振器。在新型柴油机的设计试制及解决现有船用柴油机动力装置扭振故障的过程中,常常会遇到减振器参数如何确定的问题。图l(a)为一台六缸柴油机自由端装有减振器的示意图,(b)为其扭振当量系统,有九
As the degree of diesel engine enhancement continues to increase, the value of the disturbing torque that causes the torsional vibration of the crankshaft and the transmission shaft system to increase is also constantly increasing. In order to prevent the occurrence of torsional vibration fault, marine diesel engines produced in recent years, especially medium-speed, high-speed diesel engines are mostly equipped with shock absorbers - such as coil spring shock absorbers, silicone oil spring shock absorbers, Or silicone shock absorber. During the trial design of the new diesel engine and the solution to the torsional vibration fault of the existing diesel engine power plant, problems of how to determine the shock absorber parameters are often encountered. Figure l (a) for a six-cylinder diesel engine equipped with a schematic diagram of the free end shock absorber, (b) is its torsional vibration equivalent system, there are nine