| 摘要:以改善大功率船用天然气发动机燃气系统压力波动，减少各缸喷射过程的互相干扰为目标，确定燃气系统主要结构参数设计原则。采用发动机燃气系统压力波动试验数据标定仿真计算模型；对燃气系统突加/突卸负荷开展预测研究，分析各缸压力波动及其对燃气喷射率的影响，提出为保证燃气系统正常工作，突加/突卸时间应大于0.5 s。 |
| 关键词: 大功率船用天然气发动机 燃气系统 压力波动 |
|
| Investigation on Gas System Pressure Fluctuation ofa Large Power Marine Gas Engine |
| Pu Weihua,Ping Tao,Li Xiang,Guo Lijun |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 201108 |
| Abstract:Aiming at improving the pressure fluctuation of a large power marine gas engine and meanwhile reducing the mutual interference of each cylinders during injection, the design principles of main structure parameters of its gas system was determined. The simulation model was calibrated based on the pressure fluctuation test data of the engine gas system, and then the forecast research was carried out on the sudden increasing and decreasing of load, the pressure fluctuation of each cylinder was studied as well as its influence on the gas injection rate. It is suggested that to ensure the normal operation of the gas system, the time of sudden increasing and decreasing of load should be longer than 0.5 s. |
| Key words: large power marine gas engine gas system pressure fluctuation |
