本文利用广安博之的喷雾分区模型与油滴蒸发速率模型相结合,给出燃烧室内燃油与空气的分布.依据实验数据,确定了含有18种组分、30步基元反应、适合于柴油机缸内条件的甲醇喷雾着火过程的化学动力学模型,能模拟燃烧室内甲醇喷雾自燃过程特征,用于对使用空气加热的纯甲醇压燃过程的滞燃期预测.结果表明,该模型能较成功地预测各种发动机工况下的着火滞燃期. Based on the experimental data, 18 kinds of components and 30-step elementary reactions are determined, which are suitable for diesel engine cylinder The kinetic model of the methanol spray ignition process can simulate the process of methanol spray spontaneous combustion in the combustion chamber and is used to predict the ignition delay of the pure methanol compression ignition process using air heating.The results show that the model can be more successfully predicted Ignition period under various engine operating conditions.