摘要
发动机万有特性可直观的反映发动机在其运行范围内的各项性能参数的变化情况。该文利用多项式插值法绘制发动机万有特性曲线。推导了三次多项式插值公式和三次多项式插值余项,绘制了发动机万有特性曲线。结果表明三次多项式插值法能精确地反映发动机特性,并可用该方法绘制发动机等油耗、等排放等特性曲线。为绘制发动机特性曲线、研究发动机性能提供较好的方法。
The changing tendency of the performance of engine in its operational range can be directly showed in the engine characteristics map. An approach to represent universal performance characteristics using cubic polynomial interpolation was examined. The formulation of cubic polynomial interpolation and the remainder of cubic polynomial interpolation were deduced and the engine fuel consumption characteristics map was drawn by this method. Result shows that it can exactly reflect the performance of engine to use cubic polynomial to draw engine fuel consumption characteristics map. This method can also be used to draw the engine emission and other characteristics map. It provides a useful method for drawing the engine performance characteristics map.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2004年第5期138-141,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金资助项目(50176016)
关键词
发动机
万有特性曲线
多项式
engine
universal performance map
polynomial
