5柴油机增压 5.1概述什么叫增压?就是在空气进入柴油机气缸之前,先用压气机把它压缩一下,使气缸的进气压力高于柴油机周围的环境大气压力。这样的柴油机就叫做增压柴油机,增压的部套就叫做增压器。增压可分为机械增压和涡轮增压,前者由柴油机直接传动压气机,后者是利用柴油机排出的废气推动涡轮机作为动力源带动压气机的(图1)。压缩空气从压气机出来后,一般还经过一个空气冷却器(图上未画),然后流入柴油机 5 diesel engine boost 5.1 Overview What is booster? Is the air before entering the diesel engine cylinder, the first compressor to compress it, so that the cylinder inlet pressure is higher than the ambient atmospheric pressure around the diesel engine. This type of diesel engine is called a supercharged diesel engine and the supercharged unit is called a supercharger. Turbocharged turbocharger can be divided into supercharger, the former by the direct transmission of diesel compressors, the latter is the use of diesel exhaust emissions to promote the turbine as a power source to drive the compressor (Figure 1). Compressed air from the compressor, usually after an air cooler (not shown), and then flow into the diesel engine