The spray processes of throttling and normal pintle nozzles are investigated in this paper . the test results show that the better spray characteristics and spray quality can be achieved when the throttling pintle nozzle is used in small diesel engines 本文对节流轴针式和普通轴针式喷油嘴的喷油过程进行实验研究，试验结果表明，节流轴针式喷油嘴应用在小缸径柴油机上能取得良好的喷油特性和喷雾质量。
