冬季車(chē)輛啟動(dòng)后，排氣管都會(huì)冒出一團(tuán)一團(tuán)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(jì)南奔馳汽車(chē)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(huì)生成水，水在發(fā)動(dòng)機(jī)運(yùn)行時(shí)的高溫狀態(tài)下變成水蒸氣，通過(guò)排氣系統(tǒng)到達(dá)排氣管尾部時(shí)，熱乎乎的水蒸氣看起來(lái)就像一團(tuán)一團(tuán)的白煙。有的汽車(chē)為了靜音和回壓，排氣管做得比較長(zhǎng)，不僅冒白煙，還會(huì)伴隨著滴水。這種情況是正常的，不用擔(dān)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(nèi)混合氣不完全燃燒時(shí)，也會(huì)從排氣管冒出一團(tuán)一團(tuán)的白煙，這時(shí)候，問(wèn)題就比較嚴(yán)重了。混合氣不完全燃燒時(shí)冒出的是油氣白煙，部分燃油通過(guò)排氣管排出，造成浪費(fèi)不說(shuō)，還會(huì)污染三元催化器。同時(shí)，不完全燃燒還會(huì)導(dǎo)致發(fā)動(dòng)機(jī)內(nèi)部嚴(yán)重積碳，甚在缸內(nèi)造成爆燃，損傷氣缸內(nèi)壁，影響發(fā)動(dòng)機(jī)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(chē)的排氣管會(huì)冒白煙還向外滴水。有的車(chē)不冒白煙，說(shuō)明其發(fā)動(dòng)機(jī)排量屬于小排量發(fā)動(dòng)機(jī)或者低轉(zhuǎn)速時(shí)不冒，要不就是排氣管漏氣或者有輕微堵塞現(xiàn)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?yàn)槠屯耆紵笊傻氖撬投趸?，水在高溫下是水蒸汽，水蒸氣在高溫下是無(wú)色透明的，但是當(dāng)溫度低于100℃以后，水蒸氣就會(huì)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(xiàn)為白色的氣體，環(huán)境氣溫較低時(shí)，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(lái)，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(jié)果，只不過(guò)當(dāng)環(huán)境氣溫較高時(shí)，水蒸氣還沒(méi)有冷凝就已經(jīng)排出去了，當(dāng)環(huán)境溫度較低時(shí)，水蒸氣就會(huì)在排氣管壁冷凝成水滴，并且隨排氣流出來(lái)了。這種現(xiàn)象在發(fā)動(dòng)機(jī)工作情況較好的車(chē)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.

如果排氣管冒出的白煙帶有很明顯的汽油味，那得千萬(wàn)注意了，混合氣燃燒效率亟待提升！更多相關(guān)事項(xiàng)就來(lái)我們網(wǎng)站http://www.lysjkw.com咨詢(xún)！

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.lysjkw.com consulting service