There will be carbon deposition when the car idles for a long time. Why do some people say this is a false theory?

? First of all, it is true and real that cars will produce carbon deposits on the accelerator and idle motor for a long time. Some people say that it is a false theory that cars have carbon deposits after idling for a long time. Why do they have different views? From the perspective of a car consumer, firstly, it is possible that some people also drive for a long time, and their jobs are mainly truck drivers and long-distance bus drivers. During the long-term driving and normal maintenance, no so-called carbon deposit was found in the engine, so these people think that the correct view is not credible.

? Let's popularize the principle of car carbon deposition first. Carbon deposition is the residue produced by incomplete combustion of unsaturated olefins and gums in engine oil and fuel at high temperature during engine operation, which does not accumulate in various positions in the system in time with exhaust gas, thus forming black charred substances, which we call? Carbon deposition? . If you look at carbon deposition from the picture below, it's nothing like what we know? Carbon? In fact, the engine carbon deposit looks like a layer of sponge, which has the property of oil absorption, which will make the incomplete combustion gasoline carbon deposit produce again, and it will become thicker and thicker layer by layer, resulting in a vicious circle, and even block the intake valve by half in serious cases. Engine carbon deposition is like lung cancer caused by human smoking. I didn't feel anything at first, but finally the whole lung was infected by cancer.

Secondly, the reason of car carbon deposition is that the engine speed is low or the air intake is small. In the process of engine operation, unsaturated olefins and gum in fuel produce a kind of combustion product at high temperature. Not only that, carbon deposition is also very harmful to cars, which will lead to difficulties in starting cold cars, rapid detonation acceleration, weak engine jitter and acceleration, loud noise and high fuel consumption.

Finally, there are some ways to clean up the car carbon deposit. Before the flameout, you can stomp on the pedal several times in neutral position to clean up the carbon deposit. If it is a turbocharged engine, don't turn off the engine immediately after climbing or driving at high speed, and then turn off the engine after idling for a few minutes. However, this method is aimed at relatively small carbon deposits. For the carbon deposits formed for a long time, oil cleaning, dry ice cleaning and adding clean fuel additives to the fuel tank can also be used to clean the carbon deposits, which also has certain effects.

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