发动机长时间怠速运转有如下危害: 1.缸套产生电化学腐蚀 发动机怠速运转时,冷却水的温度很低(冬季更低),致使缸壁的温度也低,空气中的部分水蒸气随空气进入气血后不能迅速分解,且燃油在低温下燃烧时会产生SO_2、CO_2等气体,它们与水滴结合后生成各种酸性物质,如有机酸、硫酸和碳酸。这些酸性物质对缸壁有强烈的腐蚀作用,会造成缸套的早期磨损。 Engine idle for a long time has the following hazards: 1. Cylinder liner electrochemical corrosion engine idle speed, the cooling water temperature is very low (lower winter), resulting in the temperature of the cylinder wall is also low, the air part of the steam with the air After entering the blood can not be rapidly decomposed, and the fuel combustion at low temperatures will produce SO_2, CO_2 and other gases, which combined with the water droplets generated a variety of acidic substances, such as organic acids, sulfuric acid and carbonic acid. These acids have a strong corrosive effect on the cylinder wall and can cause early wear on the cylinder liner.