| 摘要:针对电控喷油器零部件加工、装配过程中引入的尺寸、形位偏差，运行环境中压力波动，振动等不确定性因素导致电控喷油器喷油量、持续期等性能指标发生波动和差异的问题，在传统确定性优化的基础上，开展了关键设计参数敏感性分析，获得各关键设计参数在扰动条件下对循环喷油量、喷油持续期等性能指标的敏感性排序；而后基于6Sigma原则，对关键参数进行稳健性寻优计算，获得稳健性良好的基础方案；最后通过容差分析，调整关键设计参数公差水平，最终获得了基于喷油量、持续期、响应时间等指标的稳健性设计方案。 |
| 关键词: 电控喷油器 稳健性 敏感性 容差分析 6 Sigma原则 |
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| Robustness Optimization of Electronic Controlled Injectors |
| Zhang Tong,Jin Feng,Yang Yang,Liu Shuaishuai,Xie Yichen |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 201108;National Engineering Laboratory for Marine and Ocean Engineering Power System, Shanghai 201108 |
| Abstract:As for of electronic controlled injectors, uncertain factors such as size, form and position deviation caused by components machining and assembly tolerance, as well as uncertainties including pressure fluctuation and vibration under different working conditions, may lead to the fluctuation and discrepancy of injection volume and duration of electronic controlled injectors. To solve this problem, besides the traditional certain optimization, sensitivity analysis of key design parameters was carried out to obtain the sensibility ranking of how the key design parameters influence the performance parameters including cycle injection volume and duration under interference conditions. And then, based on 6Sigma theory, key parameters were robust optimized and basic program with good robustness was obtained. With tolerance analysis, the tolerance level of key design parameters was adjusted to finally obtain the robust design program based on the indexes including injection volume, injection duration and response time. |
| Key words: electronic controlled injector robustness sensibility tolerance analysis 6Sigma theory |
