What causes excessive carbon deposits in automobiles?

After driving for a period of time, the car will produce carbon deposits, and its carbon deposit principle:

1. Pure gasoline will not produce carbon deposits during combustion, only water and carbon dioxide, as well as some trace gases. If the gasoline contains impurities, it will be scorched during the combustion process, forming carbon deposits. The more impurities, the more carbon is deposited.

2. When the car is turned off, the spark plug is powered off, and a part of the combustible mixture cannot be completely burned, forming carbon deposits.

3. Carbon deposits formed by oil vapor in the crankcase forced ventilation system.

4. The car itself fails, resulting in excessive fuel injection and carbon deposits generated by incomplete combustion. These are the reasons for the formation of carbon deposits in automobiles. However, within 100,000 kilometers, it will not affect the car.

Why is carbon deposited generated? This is because the fuel itself contains gum, impurities, dust, moisture, etc., which accumulate over time to form sludge and other deposits in the fuel tank, oil inlet pipe, etc.; Secondly, due to the oxidation and polymerization reaction of unstable components such as olefins in gasoline at high temperatures, colloidal and resinous viscous substances are formed, which stay in the fuel injector, air intake valve and other parts, and the deposits will become hard carbon deposits when burned.

In addition, traffic congestion, cars are often at low speed and idling, which can aggravate the formation and exacerbation of carbon deposits and sediments. If the carbon deposit is not cleaned in time, the carbon deposit and sediment will block the injector needle valve and valve hole, resulting in the intake valve not being closed tightly, the cylinder pressure dropping or even tempering, resulting in unstable engine idling, increased fuel consumption and deterioration of exhaust emissions. Carbon deposits on the piston top and cylinder head can easily cause local overheating of the combustion chamber and gasoline preheating, resulting in engine knocking and other failures.

These failures can shorten the life of the engine.

How to clean up the best way to clean up carbon deposits in automobiles.

Generally, the commonly used methods are: dismantling and washing, hanging bottle cleaning, and fuel additives.

1. Dismantle and wash. This method is very direct and rude, but it is generally sent to the 4S store for disassembly, the disassembly of the engine is more complicated, no matter what parts will affect its performance more or less every time it is disassembled, you need to ask a professional master to disassemble. The carbon deposits in the engine can be seen directly when dismantled and washed, and the cleaning will be relatively clean.

However, the cost will be relatively high, and it will also require technology.

2. Hanging bottle cleaning.

This method is also relatively common, the hanging bottle is to discharge the cleaning agent into the air intake, dilute and soften the carbon deposit to turn it into a slurry, and then burn it from the cylinder to discharge. Generally, the cleaning objects include the intake tract, throttle, intake valve, fuel injector, cylinder inside, etc., but the effect is not as direct and obvious as dismantling and washing.

3. Fuel additives.

One of the causes of carbon deposition is that the fuel burns insufficiently, which adheres to various parts of the engine and forms carbon deposits over time. The main function of additives is to drill into the pores of carbon deposits with the help of strong surface activity, destroy their structure, and gradually dissolve these carbon particles from the metal surface, and then discharge them through exhaust gas after burning with fuel at high temperatures. Effective fuel additives such as PNF stock solution are non-corrosive, will not clog ternary, and have a relatively high level of safety.

First of all, we understand the word "carbon deposit" separately as the accumulated carbon substance, so why is carbon formed? In fact, a big factor is because of the quality of the oil, the oil we add to the car contains a lot of olefins and paraffin, as well as a small amount of gum. These substances can not be completely burned clean, in the perennial accumulation and the repeated high temperature of the engine, these incomplete combustion materials will continue to accumulate, remaining in the intake and exhaust valves, cylinder edges, piston tops and other positions.

These residues start out as soft mud, and then accumulate and become burned into something hard, like carbon, which is where the carbon deposits come from.

Another factor that causes carbon deposition is insufficient combustion, such as stop-and-go and long-term idling if the road conditions are not good. In the case of oil quality that is not too good, the formation of carbon deposits is further exacerbated. Hope!

Carbon deposition of automobile engine refers to a kind of coke-like substance produced by unsaturated olefins and gum in fuel at high temperature during the working process of the engine, and carbon deposition is the most harmful to automobile engine, which can be divided into two aspects: structural damage and performance degradation.

Carbon deposits will also lead to a decrease in the power of the car, and it will also be accompanied by a certain degree of increased fuel consumption, so it is necessary to remove the carbon deposits of the car regularly!

Carbon deposits are in the engine.

In the process of BAI, the volume residues produced by the incomplete combustion of unsaturated olefins and DAO gum in lubricating oil and DAO fuel oil at high temperature are not accumulated in various positions in the system with the exhaust gas discharge in time, thus forming a black coke-like substance, which we call "carbon deposit". Slight carbon deposits are okay and can even be eliminated naturally while driving. However, if the carbon deposition is serious, it will change the original structural parameters of the engine, reduce the engine power and increase fuel consumption; In severe cases, it can also cause engine knocking, acceleration squeak, damage to the piston and crankshaft, and even eventually lead to engine oil burning and overhaul.

Solution 1: Use high-quality fuels and lubricants. Because the main component of carbon deposits is the wax and gum deposition in the fuel, the lower the gum content in the fuel, the better. Although we can't change the quality of the fuel, we can choose not to add cheap fuel from unknown sources.

At the same time, the use of good lubricating oil can effectively inhibit the generation of carbon deposits, Kunlun lubrication Tianrun series is a fully synthetic high-performance lubricating oil, its advanced TGDI protection technology, reduce the occurrence of low-speed pre-ignition phenomenon of turbofan supercharged direct injection engine, and pass the GM and Ford low-speed pre-ignition test safe and reliable. 2. Avoid driving at low speed for a long time, if necessary, you can regularly pull the high speed, the principle of pulling the high speed to eliminate carbon deposition is to speed up the gas flow speed, which can take away a small part of the carbon deposition that is not very firmly attached; Increase the degree of combustion, so that part of the carbon deposits in the cylinder are burned.

1. When carbon deposits adhere to the BAI intake and exhaust valves, the intake and exhaust valves are not closed tightly and the air leaks, and the internal pressure of the engine cylinder decreases, and the direct result is that the engine is difficult to activate, and there is shaking under idle conditions; At the same time, it affects the section of the mixture into the combustion chamber, and the carbon deposition can adsorb a certain amount of the mixture, thereby reducing the engine power.

2. When the carbon deposit adheres to the cylinder and piston top, it will reduce the volume (space) of the combustion chamber and increase the cylinder compression ratio, and when the compression ratio is too high, it will cause the engine to burn prematurely (engine knocking) and reduce the power generation.

3. When the carbon deposits adhere to the spark plug, it affects the quality of the spark; Not even a jumper.

4. When carbon deposits are formed between the piston rings, it will easily jam the piston rings, causing oil burning and straining the cylinder wall.

5. When the carbon deposition adheres to the oxygen sensor, the oxygen sensor can not correctly perceive the exhaust gas condition and cannot correctly adjust the air-to-air ratio, so that the engine exhaust gas exceeds the standard.

6. When carbon deposition is formed inside the intake manifold, it becomes rough inside, which affects the formation and concentration of combustible mixture. Carbon deposits are so harmful that they must be removed immediately

Debunk the rumors! Is the harm of carbon deposits in cars really that big? Chinese car owners have been misled for many years.

Excessive carbon deposits can lead to inadequate combustion of gasoline, which in turn leads to increased fuel consumption.

You can use the Si Kuop cleaning two-way lifter to clean carbon deposits and moisture without dismantling.

Serious carbon deposits in the car can lead to engine start-up difficulties, idle shake, engine power loss, increased fuel consumption, and lack of refueling speed. Therefore, in the maintenance of the vehicle at the time of peace, it is necessary to clean up the carbon deposits in time to avoid affecting the service life of the car engine. Choosing a high-quality lubricant is an important way to avoid carbon deposits.

Kunlun Lubrication's Tianrun KR9-T 0W-40 SN fully synthetic high-performance engine lubricant has high temperature oxidation resistance 65% higher than the standard limit, which can permanently inhibit the formation of harmful substances such as carbon deposits and sludge in the engine and maintain the strong power of the car.

Fraction of carbon deposits.

Copy: valve, combustion chamber carbon deposits; When we extinguish the engine, the ignition is cut off immediately, but the gasoline sprayed by this working cycle can not be **, can only be attached to the intake valve and the combustion chamber wall, gasoline is easy to volatilize, but the wax and gum in the gasoline are left, in the long run, the wax and gum in the gasoline accumulate thicker and thicker, and harden after repeated heating to form carbon deposits. carbon deposition in the intake tube; Because the work of each piston of the whole engine is not synchronized, when the engine is extinguished, the intake valves of some cylinders cannot be completely closed, and some unburned fuel continues to evaporate and oxidize, which will produce some soft black carbon deposits in the intake pipe, especially behind the throttle.

Carbon deposits in automobiles.

What is the effect of too much?

Self-idling jitter, high idle speed, black smoke Engine carbon deposition cleaning is mainly for prevention, clean carbon deposition, that is, carbon deposition has been generated a lot, a bit contrary to the principle of maintenance and maintenance supplemented.

When the carbon deposit is very large, it is to repair it. Maintenance naturally has to be dismantled, but maintenance is the same as usual maintenance, no need to disassemble, the sooner you start, the better, after all, excessive maintenance is better than maintenance is not in place.

The new car started 5,000 kilometers with 10 tanks of oil once with fuel additives. 100,000 kilometers steady,

<>1.Once there is carbon deposits in the car, it will affect the car. I believe that many car owners have encountered such a situation.

When the ignition starts, it needs to be started several times, and sometimes it can't even be started. During driving, there will be instability when stepping on the accelerator, and the speed will be fast and slow. Sometimes when you step on the accelerator, you don't feel the speed.

Not only will the car react more slowly, but fuel consumption will also increase. If the carbon deposits are not cleaned up in time, the parts in the car will be damaged for a long time, which will affect the engine and engine block. In severe cases, there will be a pull cylinder.

Carbon deposits on the throttle can change the throttle position, miscalculate fuel**, and increase the vehicle's fuel burn. When carbon deposits adhere to the top of the cylinder and piston, it reduces the space in the combustion chamber and increases the compression ratio of the cylinder. If the compression ratio is too high, it will cause the engine to burn prematurely, reducing the start.

2.When carbon deposits are attached to the oxygen sensor, the oxygen sensor cannot correctly sense the exhaust gas condition and cannot correctly adjust the air-fuel ratio, resulting in the engine exhaust gas exceeding the standard. When the carbon deposit adheres to the exhaust valve, the intake and exhaust valves are not closed tightly, resulting in air leakage, and the pressure in the engine cylinder drops, making it difficult for the engine to start, causing idle shake, causing damage to the piston and crankshaft, and seriously affecting the safety of the car.

If the idle time is long, the engine will take longer to reach normal temperature. When gasoline is injected into the back of the valve, it evaporates more slowly and also causes carbon deposits. At the same time, if you idle frequently, the air flow into the engine will be small, which will weaken the scouring effect on carbon deposits and promote the deposition of carbon deposits.

3.Carbon deposits are generally attached to the car's air intake and fuel systems. The engine's air intake system, including the air intake and throttle valves.

Therefore, it is useless to simply clean the throttle, and the carbon deposits or sludge from the air intake also need to be cleaned. Much more carbon is deposited in the combustion system than in the air intake system. In the whole process of fuel tank-oil circuit-injector-intake valve-cylinder, there will be carbon deposits or sludge, that is to say, there are carbon deposits from the injector to the cylinder.

Excessive carbon deposition in the engine can lead to difficulty in cold starts, vehicle shaking, insufficient power, increased fuel consumption, and unqualified exhaust emissions. If carbon deposits are found in the piston rings, it can also lead to oil burning.

Carbon deposition is mostly caused by insufficient gasoline combustion due to the driver's bad driving habits, which will increase gasoline consumption, make motor vehicles difficult to start, unstable driving speed, and excessive exhaust pollution.

Automotive carbon deposits are a mixture of sediment that accumulates on the engine's valves, combustion chambers, and intake ducts. It is a mixture of hydrochloric acid and resinous colloids formed by the dust and impurities in the air under the catalytic action of high temperature and oxygen when the fuel oil is not fully combusted, which adheres to the surface of the parts, and then further concentrates into a mixture of asphaltene and colloids after high temperature.

There is carbon deposit in the engine, which will increase fuel consumption, affect power output, start difficulty and insufficient combustion, and seriously cause piston ring stuck oil, cylinder wall strain, and even overhaul of the engine. Therefore, in addition to the necessary maintenance, the daily maintenance of the car should also regularly clean the oil circuit and carbon deposits, so that the engine is always in a good working condition and avoid the occurrence of burning oil.

The vehicle is difficult to start, the acceleration is poor, the fuel consumption of the car increases, the rapid acceleration tempering or the car, the car exhaust exceeds the standard, can be repaired by the following method, when refueling, add the original gasoline additives, and clean the fuel system more carbon deposits at ordinary times.