柴油机燃料完全燃烧后,排气颜色一般为淡灰色,负荷略重时为深灰色。工作中偶尔会出现排黑烟、白烟和蓝烟现象,现将其产生原因介绍如下:黑烟柴油是复杂的碳氢化台物,喷入燃烧室内未完全燃烧的柴油受高温分解形成炭黑,造成排黑烟。黑烟是燃烧室内柴油燃烧不完全的表现,排黑烟的原因主要是:活塞环、气缸套等磨损,引起压缩力不足,气缸在压缩行程结束时,混合气混合的正常比例改变,使柴油在无氧条件下燃烧,产生积炭;喷油器工作不良,喷油器雾化不良或滴油,使柴 Diesel fuel combustion, the exhaust color is generally light gray, when the load slightly heavier dark gray. Black smokes, white smokes and blue smokes appear occasionally in their work. The reasons for their occurrence are as follows: Smoky diesel is a complex hydrocarbon plant, and incompletely burned diesel fuel injected into the combustion chamber is decomposed by high temperature to form carbon black , Resulting in row smoke. Black smoke is an incomplete combustion of diesel in the combustion chamber. The main causes of black smoke are: wear of piston ring and cylinder liner, which causes insufficient compression force. When the cylinder is at the end of the compression stroke, the normal proportion of the mixture changes, In the absence of oxygen combustion conditions, resulting in coke; Injector bad work, the injector bad atomization or dripping, so that firewood