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本文介绍形成碰撞式油束，其头部加一挡块的轴针式喷油嘴在柴油机上应用的试验研究。该喷油嘴的特点是自喷孔喷出的燃油直接撞击在头部挡块上，以其改变喷束的方向并产生油滴的二次雾化，从而达到加大喷束在空气中的散布面积，提高燃油与空气混合速率的目的。初步的试验研究结果表明，这种喷油嘴用于涡流室式柴油机，可以降低其燃油消耗率和排气烟度；用于直喷式柴油机，可以取代多孔喷油嘴使发动机良好地运转，但与多孔式喷油嘴的直喷式燃烧系统相比，目前还存在油耗率和排气温度比较高的问题，有待进一步完善和提高
This article describes the experimental study of the application of a pin-type injector that forms a collision-type oil jet with a stopper on its head in a diesel engine. The nozzle is characterized by the fuel injected from the nozzle hole directly hit the head stopper, which changes the direction of the spray and the oil droplets secondary atomization, so as to increase the jet in the air Spread the area, improve the mixing rate of fuel and air purposes. Preliminary experimental results show that this nozzle for the vortex chamber diesel engine, can reduce its fuel consumption and exhaust smoke; for direct injection diesel engine, you can replace the porous nozzle to make the engine run well, However, compared with the direct injection combustion system of porous injection nozzle, there is still a problem that the fuel consumption rate and the exhaust gas temperature are relatively high, which needs to be further improved and improved