大功率增压柴油机二级喷射试验研究

Two-stage spraying test with supercharged diesel engine

通过对传统的二级喷射系统缺点的分析，研究出一种新型的二级喷射系统，它只有一套喷油设备即 可实现二级喷射，并且使喷油器针阀生起的初始阶段喷油速率和喷油量减少，限制柴油机燃烧的滞燃阶段喷 油量，从而达到有效控制急燃期平均压升率和气缸最大燃烧压力的目的．

Presents the new two-stage spray test system with only one set of oil spraying units, which reduces oil spray and spray rate while the needle valve is rising, and controls the oil spray in the delay combustion stage so as to effectively control the average rising rate in the strong deflagation period and the max combustion pressure in the cylinder as well.