近十年来铁路牵引用柴油机在逐步提高增压压力的同时,并适当提高转速、加大缸径以增加单缸功率。为此如何更好地组织燃烧过程,则引起了设计与科研部门更大的重视。大型高速柴油机的发展,除了受到活塞平均速度、惯性力等动力因素的限制外,特别是在高的平均有效压力下,关键问题是混合气在气缸内部的形成和燃烧。对这类柴油机来讲, Over the past decade, railroad traction diesel engines are gradually increasing the supercharging pressure, increasing the speed appropriately and increasing the bore diameter to increase the single-cylinder power. How to better organize the combustion process for this purpose has aroused greater attention from the design and research departments. The development of large-scale high-speed diesel engines is limited by the dynamic factors such as the average piston speed and inertial force. Especially under the high average effective pressure, the key problem is the formation and combustion of the mixture inside the cylinder. For such diesel engines,