基于涡轮增压系统模型的发动机安全影响因素敏感性分析

中国民航大学学报 ›› 2025, Vol. 43 ›› Issue (1): 1-10.

• 民机安全性与适航 • 下一篇

基于涡轮增压系统模型的发动机安全影响因素敏感性分析

李果 1a，2 ，王梓潞 1b ，滕依达 1b ，许通格 1b

1. 北京航空航天大学 a. 科学技术研究院；b. 能源与动力工程学院，北京

100191； 2. 天目山实验室，杭州

311115

收稿日期:2024-06-14 修回日期:2024-10-15 出版日期:2025-04-09 发布日期:2025-04-09
作者简介:李果（1983— ），男，新疆乌鲁木齐人，教授，博士，研究方向为航空发动机安全性与适航
基金资助:
国家自然科学基金项目（U2233213）

Sensitivity analysis of engine safety affecting factors based on the turbocharging

system model

LI Guo1a, 2 , WANG Zilu1b , TENG Yida1b , XU Tongge1b

1a. Institute of Science and Technology; 1b. School of Energy and Power Engineering, Beihang University, Beijing 100191, China;

2. Tianmushan Laboratory, Hangzhou 311115, China

Received:2024-06-14 Revised:2024-10-15 Online:2025-04-09 Published:2025-04-09

摘要/Abstract

摘要：

采用涡轮增压系统可以有效地恢复发动机高空动力性能，提高通用航空器的工作升限，但在改善发动机性能

的同时，其安全性也应引起足够重视。为提高航空活塞发动机涡轮增压系统的安全性并对实际运行提供建议，

本文基于模型的系统安全性分析、“V”型安全性分析、响应面分析法（RSM，response surface methodology）与

Sobol 因子敏感性分析方法，构建了以 Rotax914 为原型的发动机整机准维模型与拟合方程进行全局敏感性

分析，对航空活塞发动机涡轮增压系统性能的不同安全影响因素的敏感性进行分析与比较。结果表明：海

拔高度的敏感性指数远高于其他因素；进气阀直径的敏感性指数高于废气阀直径但二者在量级上相近；在

正常运行环境下空气过滤器的有效长度对发动机涡轮增压系统几乎不产生影响。因此，在实际运行中可以

根据分析结果调整安全影响因素的变化范围，降低关键因素的不确定性，从而进行高效、直观的安全分析。

关键词:

航空活塞发动机, 涡轮增压系统模型, 响应面分析法（RSM）, Sobol 因子, 敏感性分析

Abstract:

Adopting turbocharging system can effectively restore the high-altitude power performance of the engine and improve the working ceiling of general aircraft. However, while improving the engine performance, its safety should

also be given sufficient attention. In order to improve the safety of the turbocharging system of aviation reciprocating engine and provide suggestions for actual operation, this paper combines model-based system safety analysis,

"V" shaped safety analysis, response surface methodology (RSM), and Sobol factor sensitivity analysis method, and

taking Rotax914 as prototype, a quasi dimensional model for the entire engine and fitting equation are constructed

for global sensitivity analysis. The sensitivity of the turbocharging system performance of aviation reciprocating engine to different safety affecting factors are analyzed and compared. The results indicate that the sensitivity index of

altitude is much higher than other factors, and the sensitivity index of intake valve diameter is higher than that of

exhaust valve diameter but they are similar in magnitude. The effective length of air filter has almost no effect on the

engine turbocharging system under normal operating condition. Therefore, during the actual operation, the change

range of safety affecting factors can be adjusted according to the analysis results, in order to reducing the uncertainty of key factors and conducting efficient and intuitive safety analysis.

Key words:

aviation reciprocating engine, turbocharging system model, response surface methodology (RSM), Sobol factor;

sensitivity analysis

中图分类号:

V234+ .1

李果 a, 王梓潞 b, 滕依达 b, 许通格 b.

基于涡轮增压系统模型的发动机安全影响因素敏感性分析

[J]. 中国民航大学学报, 2025, 43(1): 1-10.

LI Guoa, , WANG Zilub , TENG Yidab , XU Tonggeb.

Sensitivity analysis of engine safety affecting factors based on the turbocharging

system model

[J]. Journal of Civil Aviation University of China, 2025, 43(1): 1-10.

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基于涡轮增压系统模型的发动机安全影响因素敏感性分析

Sensitivity analysis of engine safety affecting factors based on the turbocharging

system model

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