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一、概述 往复式发动机中气流对其特性的影响是很大的。此类发动机的周期性运转在进排气管道中产生压力波,这些压力波对气缸的“换气”有强烈的影响。 利用波动技术改善发动机的特性,以下面的三种发动机为例加以说明: 1.小型二冲程回流换气发动机; 2.自然吸气多缸汽油发动机; 3.涡轮增压柴油发动机。 每一种情况下所使用的方法是相同的,而所要改善的发动机特性则稍有差别。
First, an overview of reciprocating engines in the air flow on the characteristics of its impact is great. The cyclical operation of such engines creates pressure waves in the intake and exhaust lines, which have a strong effect on the “ventilation” of the cylinders. The use of wave technology to improve the characteristics of the engine to the following three kinds of engine as an example to illustrate: 1. Small two-stroke return ventilation engine; 2. Naturally aspirated multi-cylinder gasoline engine; 3. Turbocharged diesel engine. The method used in each case is the same, with slightly different engine characteristics to be improved.