基于多维模型的电喷汽油机MAP图的数值生成

Numerical Generation for MAP Graph of EFI Gasoline Engine Based on Multidimensional Model

将DPIK点火模型和单步燃烧模型集成在K IVA-3V中,构建汽油机MAP研究的多维模型。对汽油机工作过程进行数值模拟,并以动力性、经济性和指示功为控制条件,结合试验数据对点火提前角和喷油脉宽进行优化。研究表明:用多维模型模拟的方法生成的MAP可以作为电喷汽油机的初始MAP。

The discrete particle ignition kernel （DPIK） model and one step combustion model are integrated into KIVA-3V code, and a multidimensional model for studying gasoline engine MAP is built. A simulation on the combustion process of gasoline engine is performed and an optimization on ignition advance and injection pulsewidth is conducted with performance, fuel economy and indicated work as objectives and some parameters in the model are determined based on test data. The MAP obtained from the simulation can be taken as the original MAP of EFI gasoline engine.