摘要
依照往复式内燃机测量方法,按照测量不确定度评定方式,对求解汽车发动机燃油消耗率不确定度的数学模型、误差来源进行了分析,建立了不确定度计算公式。通过对公式变量的分析,给出了各变量的不确定度、合成不确定度、有效自由度和扩展不确定度的计算方法,为同类方法测量结果的不确定度评定提供了参考。
According to the measurement method of reciprocating internal combustion engine and assessment way of measurement uncertainty,the mathematical model and error source that are used to resolve uncertainty of vehicle engine fuel consumption rate are analyzed,and the calculation formula of uncertainty is established.The calculation methods of variables uncertainty,combined uncertainty,effective degree of freedom and extended uncertainty are presented through the analysis of formula variable,and references are provided for the uncertainty assessment of measurement results with the same method.
出处
《汽车技术》
北大核心
2008年第5期18-21,共4页
Automobile Technology
基金
上海市重点学科建设项目(第2期)
项目编号:P1405
关键词
发动机
燃料消耗率
测量
不确定度
Engine,Fuel consumption rate,Measurement,Uncertainty
