严防汽车发动机过热导致不良现象1.发动机的充气系数下降气温越高,空气密度越小,发动机的实际进气量减少;由于发动机过热,发动机罩内温度更高,发动机充气能力降低。充气系数下降,造成发动机功率下降,使汽车行驶无力。另外,由于充气系数下降,混合气相对变浓,汽车废气中的有害物质(CO、HC、NOX、碳烟)浓度增大,增加环境污染。 Prevent automobile engine overheating lead to undesirable phenomena 1. The engine’s inflation coefficient is lower The higher the temperature, the smaller the air density, the actual intake of the engine to reduce; due to engine overheating, the hood temperature is higher, the engine charge capacity decreased. Inflation coefficient decreased, resulting in decreased engine power, making the car driving weakness. In addition, the concentration of harmful substances (CO, HC, NOX, soot) in automobile exhaust increases, resulting in increased environmental pollution due to the decrease of inflation coefficient and the relatively thick mixture.