内燃机可调参数对燃料经济性敏感性的研究

Study on the Sensitivity of the Adjustable Parameters of Internal-combustion Engine to Fuel Economy

摘要: 为提高投入运行使用的内燃机经济性,系统研究了影响内燃机燃料经济性的各项可调参数的敏感性,提出了敏感性系数的概念和计算式,建立了可操作的模型体系,运用模型对X195型内燃机的几个主要参数进行了敏感性分析,找出了不同参数的敏感特性及敏感性序列,进一步讨论了不同参数交互作用下对敏感性的影响;指出了内燃机设计改进及运用时应注意的问题。
- 内燃机 /
- 可调参数 /
- 燃料经济性 /
- 敏感性
Abstract: The paper studies the sensitivity of the adjustable parameters of internal-combustion engine to fuel economy with test research and model calculation methods. Based on the concept of sensitivity, the mathematical models of internal-combustion engine fuel economy and their parameter sensitivities are established. Using these models, several parameter sensitivities to internal-combustion engine fuel economy are analyzed. The sensitive characters of effecting on fuel economy of different parameters and some adjustable parameter sensitivity orders are found, and the influence of cross rule in different parameters to sensitivity is analyzed. Some considerable matters in internal-combustion engine design, transformation and application are pointed out.