基于插值法的汽车发动机转矩特性分析

Automotive engine torque analysis based on interpolation method

为了获得东风康明斯EQB210-20发动机的转矩特性模型,应用EQB210-20发动机的技术参数和实验数据,通过拉格朗日插值法对实验数据进行处理,得到发动机的转矩特性曲线,从而建立了发动机的转矩特性模型.结果表明,建立的模型可形象地反映此款发动机的转矩特性,可作为研究汽车的动力性能和经济性能的基础.

In order to obtain the model of automotive engine torque,the technical parameters and the empirical datum of DCEC EQB210-20 engine were used.The empirical datum was disposed based on interpolation method,then the characteristics curve of engine torque was obtained.So,the model of automotive engine torque is obtained.The results show that the model can reflect vivirdly the torque characteristic of the engine.The model of engine torque is a foundation for the analysis of automotive dynamic performance and economical performance.