摘要
利用韦伯 (Wiebe)模型、Watson模型、Whitehouse Way模型以及化学动力学着火模型模拟计算了DME发动机的燃烧放热率 ,并将模拟计算结果与试验结果进行了对比。在对喷油正时、燃烧始角、循环供油量以及燃料热值等计算初始参数进行适当调整的基础上 ,上述模型的模拟计算结果与DME发动机实测数据基本吻合 ,说明上述各模型不仅适用于柴油发动机的性能预测分析 。
This paper presents computational method of heat release rate of DME engines by numerical simulation based on Wiebe model, Watson model and Whitehouse Way model. The results of simulations are compared with that of experimental data to check these models' reliability and feasibility in predicting working process of DME engines. The comparison shows that only with proper adjustment of several initial parameters such as fuel injection timing, start angle of combustion, fuel supply per cycle etc., can the good agreement between results of simulation and experimental data be obtained. The results show that above mentioned three models are suitable to predicting performance characteristics of engines operated with DME.
出处
《小型内燃机与摩托车》
CAS
北大核心
2003年第4期1-4,共4页
Small Internal Combustion Engine and Motorcycle
