Why don't diesel cars need carbon deposit cleaning?
1 Answers
According to the introduction, diesel vehicles do require carbon deposit cleaning, but not as severely as gasoline vehicles. Engine carbon deposits are byproducts of incomplete combustion of fuel and lubricating oil. Their formation is closely related to the usage environment conditions and the quality of the fuel and lubricating oil itself. Any factors that cause incomplete fuel combustion or abnormal entry of lubricating oil into high-temperature areas of the engine are reasons for carbon deposit formation. The main causes of carbon deposit formation in diesel engines include the following aspects: Poor diesel quality containing impurities; Prolonged use of lubricating oil in diesel engines with high gum content; Loose piston rings, excessive ring gaps, or excessive clearance between valve guides and valve stems, causing oil to enter the combustion chamber and burn; Ignition timing that is too advanced or retarded, or excessive fuel supply from the injection pump; Diesel engines operating at low temperatures for extended periods or worn/damaged cylinder sealing components leading to incomplete fuel combustion; Injector pressure being too low with poor atomization, resulting in fuel dripping or leakage; Diesel engines operating under prolonged overload conditions or drivers frequently revving the throttle.