CAJ | 학술논문

针对 YN30高压共轨柴油机,借助于 LabVIEW 软件及硬件平台,设计开发了一套曲轴扭转振动测试分析系统,并通过对发动机曲轴两端瞬时转速信号的同步测量,分析了 YN30柴油机曲轴旋转方向的振动。通过对振动角位移各主谐次的幅值和相位分析,可以获得 YN30发动机不同频率曲轴扭转振动的临界转速为2200和2750 r/min,固有频率为367 Hz,自由端扭振幅值远大于飞轮端扭振幅值,振动节点靠近飞轮端等重要信息,并且验证了该发动机曲轴的设计及相应减振措施的合理性。
침대 YN30고압공궤시유궤,차조우 LabVIEW 연건급경건평태,설계개발료일투곡축뉴전진동측시분석계통,병통과대발동궤곡축량단순시전속신호적동보측량,분석료 YN30시유궤곡축선전방향적진동。통과대진동각위이각주해차적폭치화상위분석,가이획득 YN30발동궤불동빈솔곡축뉴전진동적림계전속위2200화2750 r/min,고유빈솔위367 Hz,자유단뉴진폭치원대우비륜단뉴진폭치,진동절점고근비륜단등중요신식,병차험증료해발동궤곡축적설계급상응감진조시적합이성。
Focusing on the high pressure common rail diesel engine,combined with the existing LabVIEW software and hard-ware platform,a set of crankshaft torsional vibration measurement and analysis system were designed.By using this system,the vi-bration in the crankshaft’s rotating direction of YN30 diesel engine was analyzed by measuring the transient speed of two ends of the crankshaft synchronous.Through analyzing the amplitude value of the main harmonic of angular displacement of vibration and phase of angular displacement of vibration,many important information can be gotten such as the critical speed of rotation of torsional vi-bration of crankshaft of YN30 engine are 2 200 r/mi and 2 750 r/min,intrinsic frequency is 367 Hz,the amplitude value of the free ends’torsion vibration is much bigger than that of the flywheel ends,vibration node is near the flywheel ends,and so on.At the same time,the rationality of the design of crankshaft of this engine and corresponding damping solutions were tested and verified too.