討論汽車積碳與除碳
內燃機因為汽油品質與其含膠質成份.在標準的混合比理論下.經過點火爆炸.產生了CO與HC.但在機械條件及駕駛習慣.駕駛條件與駕駛環境不同之下.容易產生其他的CO.02.NOx...以及附著再進汽門背面的積碳...
內燃機進氣系統.通常積碳會積在進汽門背面>活塞頂部>節汽門>進氣歧管...但在新的進氣歧管材質改變下.管內毛細管變小.也讓積碳不容易積累.而新式的鍍膜層讓節汽門不容易積碳.近年的直接噴射引擎.也讓汽門背面不在被汽油沖刷.造成汽門背面的積碳形成最難清除的死角.
積碳的形成會直接影響到噴油脈冲.混合比的修正.造成引擎無力.耗油.甚至亮起故障燈.引起機械故障.
市面除碳模式有許多種：從乾冰除碳.液態氨除碳.氫離子除碳.氫氧除碳.泡沫式除碳.機油除碳.....各種廣告琳瑯滿目.除碳方式及副作用.除碳效果都各自誇大其詞.尤其有數種除碳模式可能或造成積碳成塊剝落.造成排汽門阻塞.觸媒阻塞.引起排氣系統故障.含氧感知器亮燈...所以找到優質保修廠除碳是一件很重要的事.
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I used Seafoam to clean carbon for G and M. I bought G with already 40K kms on it. In the beginning I used Seafoam for G every one year. Now I find my old G is getting better and better(use good oil, gas and change oil every 5000-5500 kms). So I decide to use Seafoam every 3-4 years for G. (After Seafoam I also add some XADO to restore its compression since it's already over 190K kms!?!)
I bought M with only 10K kms on it and only use Seafoam one time at 50K kms. Guess what? When I used Seafoam on M, there is barely any white smoke out of M's tailpipes. So I guess my M was very healthy and didn't need Seafoam at all...
I think it's difficult to destroy G and M even though I and sometimes my wife drive them spiritedly. The only thing could destroy them is a CAR ACCIDENT due to too fast!?!
(hoping it will NEVER happen!!!)
