| 摘要:基于AVL-EXCITE软件搭建了YC12VC发电用高速柴油机轴系动力学模型，其模拟值与试验值吻合性较好,验证了该模型可以较好地模拟不同工况条件下轴系的运动情况。基于平衡性和均匀发火等原则，设计了8种不同的发火顺序，并针对轴承受力、轴承润滑、轴系扭振和转速不均匀性开展影响规律研究。结果表明:通过发火顺序的优化，在保证最大主轴承负荷和最小油膜厚度满足设计要求的前提下，标定工况下的曲轴扭振总振幅从0.465°降低到0.259°，转速不均匀系数从0.018降低到0.009。 |
| 关键词: 高速柴油机 发火顺序 扭振 主轴承 润滑 |
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| The Analysis and Research on Firing Order of YC12VC HighSpeed Diesel Engine |
| Chen Yue,Shen Jie,Huang Yongzhong,Qin Mingzhi |
| Guangxi Yuchai Machinery Co., Ltd., Guangxi Yulin 537005 |
| Abstract:By using AVL-EXCITE software, the dynamic model of crank train on an YC12VC generating engine was developed. The simulated data coincided well with the experimental data. Therefore, its was verified that this model could simulate the motion of crank train under different working conditions. Based on the principles of external balancing and equidistant firing, 8 types of firing order were designed to analyze the influence rule of bearing load, bearing lubrication, torsional vibration of crank train and speed irregularity. Through the optimization of firing order, the crankshaft torsional vibration amplitude was reduced from 0.465°to 0.259°and speed irregularity coefficient reduced from 0.018 to 0.009 under rated condition. |
| Key words: high speed diesel engine firing order torsional vibration main bearing lubrication |
