冬季車輛啟動后，排氣管都會冒出一團一團的白煙。大家都冒煙，我也冒煙，正常！不不不，冒白煙也分情況。下面
濟南奔馳汽車維修人員為你著重分析分析：
After starting the vehicle in winter, the exhaust pipe emits white smoke in clumps. Everyone is smoking, and I am also smoking, normal! No, no, no, white smoke varies depending on the situation. Below, Jinan Mercedes Benz automotive maintenance personnel will focus on analyzing and analyzing for you:
水汽白煙
Water vapor white smoke
汽油燃燒后會生成水，水在發動機運行時的高溫狀態下變成水蒸氣，通過排氣系統到達排氣管尾部時，熱乎乎的水蒸氣看起來就像一團一團的白煙。有的汽車為了靜音和回壓，排氣管做得比較長，不僅冒白煙，還會伴隨著滴水。這種情況是正常的，不用擔心。
After the combustion of gasoline, water is generated, which becomes water vapor during the high temperature state of engine operation. When it reaches the tail of the exhaust pipe through the exhaust system, the hot water vapor looks like clusters of white smoke. Some cars have longer exhaust pipes for noise reduction and pressure reduction, which not only emit white smoke but also accompanied by dripping water. This situation is normal, don't worry.
油氣白煙
Oil gas white smoke
缸內混合氣不完全燃燒時，也會從排氣管冒出一團一團的白煙，這時候，問題就比較嚴重了。混合氣不完全燃燒時冒出的是油氣白煙，部分燃油通過排氣管排出，造成浪費不說，還會污染三元催化器。同時，不完全燃燒還會導致發動機內部嚴重積碳，甚至在缸內造成爆燃，損傷氣缸內壁，影響發動機壽命。
When the mixture in the cylinder is not fully burned, white smoke will also emit in clusters from the exhaust pipe, and at this point, the problem becomes more serious. When the mixture is not fully burned, it emits white smoke from the fuel gas, and some of the fuel is discharged through the exhaust pipe, causing waste and polluting the three-way catalytic converter. At the same time, incomplete combustion can also lead to severe carbon deposition inside the engine, and even cause detonation in the cylinder, damaging the inner wall of the cylinder, and affecting the engine's lifespan.
冬季汽車的排氣管會冒白煙還向外滴水。有的車不冒白煙，說明其發動機排量屬于小排量發動機或者低轉速時不冒，要不就是排氣管漏氣或者有輕微堵塞現象。
In winter, the exhaust pipe of a car emits white smoke and drips water outwards. Some cars do not emit white smoke, indicating that their engine displacement belongs to a small displacement engine or does not emit smoke at low revs, or there is air leakage or slight blockage in the exhaust pipe.
冒白煙是因為汽油完全燃燒后生成的是水和二氧化碳，水在高溫下是水蒸汽，水蒸氣在高溫下是無色透明的，但是當溫度低于100℃以后，水蒸氣就會冷凝成水，如果冷凝的水滴很小并且懸浮在空氣中，水蒸氣就呈現為白色的氣體，環境氣溫較低時，排氣管冒白煙就是水蒸氣。
The white smoke is caused by the generation of water and carbon dioxide after the complete combustion of gasoline. Water is steam at high temperature, which is colorless and transparent at high temperature. However, when the temperature is lower than 100 ℃, the water vapor will condense into water. If the condensed water drops are very small and suspended in the air, the water vapor will appear as white gas. When the ambient temperature is low, the white smoke from the exhaust pipe is water vapor.
如果冷凝的水滴積聚起來，就變成了水。排氣管排出的水滴，就是汽油燃燒后生成的水蒸氣，在排氣管和消音器中冷凝的結果，只不過當環境氣溫較高時，水蒸氣還沒有冷凝就已經排出去了，當環境溫度較低時，水蒸氣就會在排氣管壁冷凝成水滴，并且隨排氣流出來了。這種現象在發動機工作情況較好的車上是普遍存在的。
If condensed water droplets accumulate, they become water. The water droplets discharged from the exhaust pipe are the result of condensation of water vapor generated after gasoline combustion in the exhaust pipe and muffler. However, when the ambient temperature is high, the water vapor has already been discharged before condensation. When the ambient temperature is low, the water vapor will condense into water droplets on the exhaust pipe wall and flow out with the exhaust. This phenomenon is common in vehicles with good engine operation.
If the white smoke emitted from the exhaust pipe has a clear gasoline smell, it is important to pay attention, as the combustion efficiency of the mixture urgently needs to be improved! For more related matters, come to our website http://www.zhongzaojixie.com consulting service
