| 摘要:为定量研究在不同压力下燃油的有效体积弹性模量，基于燃油有效体积弹性模量的定义和试验测试数据，通过MATLAB软件拟合求解燃油有效体积弹性模量随压力变化的二次函数和一次函数表达式。二者与试验测试数据对比，结果表明两种计算方法均与测试数据基本吻合，但二次函数表达式的准确性更高。以燃油有效体积弹性模量二次函数表达式为基础，推导在不同压力下燃油密度的计算方法。 |
| 关键词: 燃油 压力 弹性模量 计算方法 |
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| A Calculation Method of Fuel Effective Bulk Elastic Modulus |
| LI Huale,WANG Min,KANG Yanhong,MA Liang |
| China North Engine Research Institute， Tianjin 300400， China |
| Abstract:In order to quantitatively study the effective bulk elastic modulus of fuel under different pressures，based on the definition and the test data of the fuel effective bulk elastic modulus，the quadratic function and the linear function expression of the effective bulk elastic modulus of the fuel with pressure change were solved by MATLAB software.Comparison between the two and experimental test data show that the two calculation methods are basically consistent with the test data，but the accuracy of the quadratic function expression is higher.Based on the quadratic function expression of the effective bulk elastic modulus，the calculation method of fuel density under different pressures was derived. |
| Key words: fuel pressure elastic modulus calculation method |
