二加二冲程发动机作为全新概念的发动机,像是只有二冲程,实际上每次循环和利用了进气、压缩、燃烧和排气这四个冲程,故而得名,其实,它是一种可变的四冲程发动机。 二加二冲程发动机的容积效率及其平均有效制动压力(BMEP),与一个典型的四冲程发动机相比要好 Two plus two-stroke engine as a new concept of the engine, such as only two-stroke, in fact, each cycle and the use of intake, compression, combustion and exhaust of these four strokes, hence the name, in fact, it is a Variable four-stroke engine. The volumetric efficiency and its mean effective brake pressure (BMEP) for two and two-stroke engines are better than for a typical four-stroke engine