由于汽車是由多個零件組合而成的,所以在行駛中出現(xiàn)的一些問題,修車師傅都會用專業(yè)名詞來形容。不過,對于身為外行人的我們,在聽到發(fā)動機低速早燃的時候,就會感到十分疑惑。發(fā)動機低速早燃是什么意思?低速早燃現(xiàn)象怎么解決?讓我們一起來看一下吧!
低速早燃的現(xiàn)象也就是指車輛的發(fā)動機轉(zhuǎn)速比較低,但是扭矩輸出比較高的時候,燃油和機油的混合物在火花塞正常工作點火之前就已經(jīng)發(fā)生了點火現(xiàn)象,一般都是在車輛低速但是高負(fù)荷運行的情況下出現(xiàn),燃油和機油中的混合物在火花塞正常點火之前所發(fā)生的自燃現(xiàn)象。
在車輛發(fā)生該現(xiàn)象時,車輛發(fā)動機內(nèi)缸的壓力變大,這種情況下的破壞性比常規(guī)爆震的破壞性還要大很多,就會導(dǎo)致火花塞燒灼、氣門擊穿和活塞頂面斷裂以及其它的一些問題,反正就是對發(fā)動機會造成很嚴(yán)重的傷害。
這個現(xiàn)象出現(xiàn)的原因也就是汽車內(nèi)的零件在進(jìn)行進(jìn)氣沖程的時候,噴嘴將油霧噴到氣缸里面,其中一些燃油就會和機油的殘余薄膜產(chǎn)生一些反應(yīng),然后在燃油和殘留物混合之后,就會被液化,也就導(dǎo)致壓縮沖程的時候上升的活塞產(chǎn)生的一些物質(zhì),隨著活塞一起上升,然后就會導(dǎo)致溫度上升也就會發(fā)生早燃。
因為這個問題還是比較嚴(yán)重的,可以到維修廠檢修一下,嘗試一下改善機油的性能,然后改變這種現(xiàn)象的發(fā)生。
解決低速早燃的方法就是使用高標(biāo)準(zhǔn)的潤滑油,由于發(fā)動機結(jié)構(gòu)不同,要想從根本上解決“低速早燃”問題并不是很容易。
不過,汽車廠商發(fā)現(xiàn)高標(biāo)準(zhǔn)潤滑油能有效緩解低速過早燃燒,通用率先提出第二代dexos1標(biāo)準(zhǔn)。本標(biāo)準(zhǔn)專門針對渦輪增壓器保護(hù)和低速早期燃燒,對潤滑油提出了更嚴(yán)格的要求。
目前對于這種現(xiàn)象是無法避免的,不過,我們可以通過給汽車改善機油性能,來抑制這種情況。
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