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设计了一种在螺旋进气道内喷射空气的柴油机可变涡流进气系统——喷气式可变涡流进气系统。对该系统的稳流气道试验表明，喷嘴在特定位置上向气道内喷射空气，可以增强或者降低气缸内涡流强度。通过稳流气道试验，确定了最大程度改变缸内涡流强度的最佳喷嘴安装位置及空气喷射方向，选择了喷嘴尺寸及空气喷射压力，并测定了不同喷射压力下，气缸内涡流比与模拟发动机转速的关系。对该系统做了单缸柴油机试验，结果表明，喷气式可变涡流进气系统基本不影响充气系数，但通过该系统对气缸内涡流强度的调节，有效地改变了发动机的排放性能
A diesel variable vortex air intake system with jet air injection in the spiral inlet is designed. Steady flow airway tests on this system show that the nozzle injects air into the airway at a specific location to enhance or reduce the eddy current in the cylinder. Through the steady-flow airway test, the optimal nozzle installation position and air injection direction to change the swirling intensity in the cylinder were determined. The nozzle size and air injection pressure were selected. Under the different injection pressure, the relationship between swirl ratio in cylinder and simulated engine Speed of the relationship. A single cylinder diesel engine test was carried out on the system. The results show that the jet-type variable vortex intake system basically does not affect the inflation coefficient, but through the adjustment of the vortex intensity in the cylinder, the system effectively changes the emission performance of the engine