人们致力开发低的燃油消耗率和高的可靠性发动机,当代四冲程柴油机平均有效压力达2.5MPa。为获得更高的平均有效压力,一种设计方案是两级增压,但是由于两级增压技术复杂,直至目前人们并不乐意采用它。另一种较简单的是采用单级 People are committed to developing low fuel consumption and high reliability of the engine, the contemporary four-stroke diesel engine average effective pressure of 2.5MPa. In order to obtain a higher average effective pressure, one design scheme is two-stage supercharging, but due to the complicated two-stage supercharging technology, up to now, people are not willing to adopt it. Another simpler approach is to use a single stage