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予测柴油机和火花点火层状进气发动机中液体燃油雾注蒸发过程的理论模型提出来了:假定喷射的液体燃油以一定的延迟时间崩裂成小液滴,延迟时间是通过对高温、高压隋性气体中喷射燃油吸热过程的仔细试验而决定的。这些小油滴的蒸发,吸热和运动与雾注内气体状况变化,一起用油滴与气体间热和质量平衡组成的方程组作了计算。 用这个模型对周围气体条件,燃油性质和雾注特性参数对蒸发的影响作了研究。对直接喷射柴油机内燃烧速率计算的预测结果的应用也作了介绍。
The theoretical model of the process of liquid fuel mist injection and evaporation in diesel engines and spark-ignited stratified charge engines is proposed. Suppose that the injected liquid fuel breaks down into small droplets with a certain delay time, and the delay time is determined by the high temperature, Determination of the endothermic process of jet fuel injection in a gas. The evaporation, endothermic and kinetic movements of these small oil droplets are correlated with changes in the gas conditions in the mist, together with the equations consisting of the heat and mass balance between the oil droplets and the gas. The effect of ambient gas conditions, fuel properties and fogging parameters on evaporation was investigated using this model. The application of the prediction of the combustion rate in direct injection diesel engine is also introduced.