通常，喷油嘴有效截面的测量在专用试验台上进行，但这种方法要动用专用设备，一般只用于抽检．本文讨论一种简便有效并且可用于批量检查的测量方法。1柴油机对喷孔有效截面积的要求众所周知，柴油机的输出功率和热效率以及废气排放的净化问题，与喷人燃烧室中的燃烧雾化性能有 Normally, the measurement of the injector effective cross-section is carried out on a special test bench, but this method requires the use of specialized equipment and is generally used only for sampling. This article discusses a simple and effective measurement method that can be used for batch inspection. 1 Diesel injection nozzle effective cross-sectional area requirements As we all know, diesel engine output and thermal efficiency and exhaust emissions purification problems, and jet combustion chamber combustion atomization performance