| 摘要:建立了燃油泵齿轮系的简化弹性质量体模型，仿真分析得到其扭转振动响应。结果表明:燃油泵工作频率和发动机着火频率不一致,引起燃油泵齿轮轴扭振幅值较大且峰值波动较大，是燃油泵齿轮系声音异常的主要因子。通过优化燃油泵速比和初始相位，其扭振幅值降低60%，峰值无波动；噪声试验验证优化后的燃油泵齿轮系异响消失，噪声声压级水平总体降低了0.9 dB(A)。 |
| 关键词: 燃油泵 齿轮系 弹性质量体模型 扭转振动 噪声 |
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| Research of Noise Optimization of Fuel Pump Gear Training Systemsfor In-Line Six-Cylinder Diesel Engines |
| Song Danping,Wang Yong,Xu Chao,Zheng Guoshi |
| Dongfeng Cummins Engine Co.,Ltd., Hubei Xiangyang 441004 |
| Abstract:The simple elastic mass model of fuel pump gear training system was built and simulation analysis was carried out to obtain its torsional vibration response. The results indicated that the torsional vibration of fuel pump gear training system had high amplitude and big peak fluctuate when the working frequency of fuel pump did not coincide with engine fire frequency. It was key factor of abnormal noise of fuel pump gear training system. By optimizing speed ratio and initial working phase of fuel pump, the torsional vibration amplitude was reduced by 60% and had no peak fluctuate. The noise testing indicated that abnormal noise had disappeared and the overall sound pressure level had reduced by 0.9 dB(A). |
| Key words: fuel pump gear training system elastic mass model torsional vibration noise |
