本文通过专门的试验或计算．对柴油机全气缸取样技术存在的几个问题进行了分析与讨论。这几个问题是：如何定义取样转角；执行机构延迟时间的分散性对取样控制精度的影响；微粒的壁面沉积；取样时刻缸内正常未燃燃油液滴对微粒、ＨＣ测试结果的影响；高转速下取样的可能性。 This article through a special test or calculation. Several problems existed in the whole cylinder sampling technology of diesel engine were analyzed and discussed. These questions are: how to define the sampling corner; the influence of actuator delay time dispersion on the sampling control accuracy; the deposition of particles on the wall surface; the effect of normal unburned fuel droplets in the cylinder on the particle and HC test results at the time of sampling; The possibility of sampling at speed.