1.前言近年来,为适应节能、节省资源的社会需求,甚至连高速柴油机也装上了增压器,因此,提高这些发动机的性能也就成了重要的研究课题。因为增压柴油机是由两种结构不同的机械——发动机和增压器结合而成的,因此在提高这两种机械的各自性能同时,如何通过它们之间的配合即匹配来提高性能也是很重要的。但是,在工业生产中并不是针对不同的发动机设计最适宜的增压器,而是把按系列制造的增压器装在发动机上。所以要通过选择增压器的涡 1. Introduction In recent years, to meet the social needs of saving energy and saving resources, even high-speed diesel engines are equipped with superchargers. Therefore, improving the performance of these engines has also become an important research topic. Because turbocharged diesel engines are made up of two structurally different mechanical engines and superchargers, it is also very important to improve the performance of both machines by how they match and match important. However, instead of designing the most suitable supercharger for different engines in industrial production, turbochargers made in series are mounted on the engine. So by choosing turbocharger vortex