What causes more carbon deposition in Wuling Light 6388nf?

Carbon deposition is a deposit produced by incomplete combustion after fuel and lubricating oil are mixed by gas. Mainly divided into valve, combustion chamber carbon deposit and intake pipe carbon deposit (the main components are hydroxy acid, asphaltene, tar, etc. The formation of deposits is directly related to the "fuel oil" and "lubricating oil" of automobiles: firstly, a large number of carbon particles contained in the blowby gas of "lubricating oil" are deposited when they are not completely burned. The automobile itself contains colloid and impurities, or dust and impurities brought in during storage and transportation, and sludge-like deposits are formed in the automobile fuel tank, oil inlet pipe and other parts over time; Secondly, unstable components such as olefins in gasoline undergo oxidative polymerization at a certain temperature, forming mucilage and resinous viscous substances. These viscous substances deposited on the nozzle, intake valve and combustion chamber (cylinder head and piston top) will become hard carbon deposits. In addition, due to urban traffic congestion, cars are often at low speed and idle speed, which will aggravate the formation and accumulation of these deposits. To put it bluntly, driving habits, poor oil products and careless protection of cars are the direct causes of carbon deposition.

Harm of carbon deposition

To sum up, the influence of engine carbon deposition on cars is still quite great. First, the engine power is reduced, that is, the power output is uneven and gradually decays, in other words, it is getting less and less powerful. The second is to increase fuel consumption and increase your economic burden. Third, it is difficult to start a cold start, that is, it is difficult to strike a fire and it is not easy to get a taxi. Finally, serious carbon deposition in the combustion chamber will also cause cylinder knocking, and low-speed acceleration will produce noise and damage the piston and crankshaft, thus seriously affecting the safety of the automobile. Then the discharge exceeds the standard, which not only fails the annual inspection, but also directly aggravates the harm of environmental pollution.

The specific principle is that if you don't pay attention to oil products and driving habits for a long time, the wax and gum in gasoline will accumulate thicker and thicker, and will harden after repeated heating to form carbon deposits. If the engine burns engine oil, or the quality of gasoline is poor and there are many impurities, the valve carbon deposit will be more serious and form faster. Because the structure of carbon deposit is similar to sponge, when the valve forms carbon deposit, a part of the fuel injected into the cylinder will be adsorbed every time, which will dilute the concentration of the mixture that really enters the cylinder, resulting in poor engine operation, difficult starting, unstable idle speed, poor acceleration, sudden refueling and tempering, excessive displacement and increased fuel consumption. In severe cases, the valve does not close tightly, so that there is no cylinder pressure in the cylinder and it does not work at all, or even the valve does not return. At this time, the valve and piston will interfere with each other and eventually damage the engine.

How to diagnose

It is very simple to diagnose carbon deposit in intake pipe in automobile maintenance. As long as the throttle is removed, the degree of carbon deposition can be clearly seen. However, the diagnosis of valve carbon deposit has always been a difficult problem. Usually, the repair shop needs to use some tools such as endoscope for diagnosis, just like the gastroscope is used to diagnose stomach diseases in the hospital.

In other words, when you are driving, you encounter the phenomenon of slow speed increase, fast refueling and tempering, and difficult cold start. It is very likely that the valve of your car has deposited carbon. It is found that the idle speed is low, the card is issued by stepping on the accelerator, and there is no idle speed after changing the battery, so the carbon deposition in the intake pipe of your car is very serious. In case of the above phenomenon, you should go to a professional repair shop for inspection in time.

Generally speaking, Japanese and Korean models should be cleaned once around 30000KM, because most Japanese and Korean models are low-speed and high-torque engines, which value low-speed driving, and the influence of carbon deposition on engine power and fuel consumption is relatively small. On the contrary, European and American models will be cleaned once every 20000KM. Most European and American models are medium and high-speed engines, which will have strong power output at a certain speed. Most of them are driving at medium and high speed, but the medium and high speed must pass the low speed first, and the influence of carbon deposition on the engine is obvious when the engine accelerates at low speed. Of course, it also depends on daily driving habits. No matter what model, if you drive at high speed for a long time, generally speaking, the possibility of carbon deposition is small, and the probability of carbon deposition will be great on the route of long-term traffic jam. After about two years, it is still necessary to check the carbon deposition in 4S shops.

How to deal with

Carbon deposition is not a good thing, how to completely remove it? Some repair shops have gradually accepted a disassembly-free cleaning method, which thoroughly cleans the engine system without destroying the original assembly condition of the engine, thus helping the maintenance personnel to solve a series of problems quickly and effectively and restore the original driving performance. It is recommended to use C+BE, an efficient cleaning agent for engine and fuel system of Marti, Germany, to quickly solve the problem of carbon deposition in automobiles.