| 摘要:对某型柴油机强化后的排气管的主要特征参数进行优化设计；分析了排气管特征参数总管直径、喉口收缩率以及入流角对总体性能及换气损失的影响,其中,排气总管直径对性能影响较大,喉口收缩率次之,排气入流角的影响甚微；并得出满足总体性能指标的排气管特征参数的合理范围。 |
| 关键词: 排气管 特征参数 优化 |
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| Optimization Design of Characteristic Parameters of Exhaust Pipes |
| Qiang Yongping,Zhen Hao,Xu Chunlong,Xu Junfeng,Wen Ming |
| China North Engine Research Institute;ShanxiDatong 037036 |
| Abstract:The main characteristic parameters of an improved diesel engine's exhaust pipe are optimized. The influence of the main pipe diameter, contraction percentage and inflow angle on the overall performance and scavenge loss are analysed, which shows that the main pipe diameter has bigger influence on performance, contraction percentage's influence is less, and inflow angle's is the least. Moreover, the reasonable range of the characteristic parameters satisfying the overall performance requirements are given. |
| Key words: exhaust pipe characteristic parameter optimization |
