Is there any way to solve the problem of carbon deposition in gk5?

2. Add fuel additives

3. Clean up carbon deposits regularly.

4. Avoid idling for a long time, because frequent high-speed operation will burn carbon.

1. Reasons for carbon deposition * (Magic Capsule can reduce carbon deposition, save energy and reduce emissions, which is possible)

The power of the engine comes from the fact that when the piston of the engine moves downward, the mixture of gasoline and air is sucked into the cylinder, and then the upward piston compresses the oil and gas into highly combustible gas, and finally the spark plug ignites it. The piston is pushed by this powerful explosive force, so the engine generates power. The gas source of power mixture must enter the combustion chamber through the intake valve; A small amount of gasoline will adhere to the intake valve. When the engine is at a high temperature, hydrocarbons, paraffin and colloid that cannot be completely burned in gasoline will burn into colloidal carbon. If there is scale in the nozzle, the sprayed gasoline will be in a state of poor atomization, and the uneven mixing of gasoline and air will increase the condensation of gasoline in the intake valve. Unfortunately, rubber carbon has the characteristics of absorbing gasoline, so this layer of carbon will absorb gasoline, and the absorbed gasoline will be burned into rubber carbon to form thicker carbon, and the thicker carbon will absorb more gasoline, and so on, until there is too much carbon to close the intake valve and make the engine unable to run.

Carbon deposition in the combustion chamber is due to tiny carbon particles produced by colloid in gasoline and hydrocarbons that cannot be completely detonated after explosion, and does not accumulate in the combustion chamber with exhaust gas. These black particles should be discharged into the atmosphere with the exhaust gas or accumulated on the muffler pipe. If the carbon deposition in the combustion chamber is serious, the temperature of the combustion chamber will rise, which will lead to the ignition of the spark plug and the self-explosion of the combustion chamber mixture. The two deflagration points make the cylinder pressure suddenly rise, damage the internal and external parts of the engine, and make a sound similar to knocking on the cylinder block. This is knocking. By observing the ignition end of the spark plug, we can know the carbon deposition in the combustion chamber.

Before the throttle valve cleans up the carbon deposit.

After the throttle is cleared of carbon deposits.

2. Two kinds of carbon deposits in automobiles

Carbon deposition in combustion chamber and valve

Due to the control characteristics of EFI engine, the cylinder is injected with oil first and then ignited every time it works. When we put out the engine, the ignition device was cut off immediately. However, the gasoline sprayed by this working cycle cannot be recovered and can only be attached to the intake valve and the combustion chamber wall. Gasoline is volatile, but wax and gum remain in gasoline. In the long run, the wax and gum in gasoline accumulate thicker and thicker, and harden after repeated heating, forming carbon deposits. If the engine burns engine oil, or the quality of gasoline is poor and there are many impurities, then the valve carbon deposition is more serious and forms 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 will not be closed tightly, so that a cylinder can not work completely because there is no cylinder pressure, and even the valve can not go back. At this time, the valve and piston will interfere with each other and eventually damage the engine.

Carbon deposition in intake pipe

Due to the unsynchronized operation of the pistons in the whole engine, when the engine is turned off, the intake valves of some cylinders cannot be completely closed, and some unburned fuel is continuously evaporated and oxidized, which will produce some soft black carbon deposits in the intake pipe, especially behind the throttle. On the one hand, these carbon deposits will make the pipe wall of the intake pipe rough, and the intake will produce eddy currents in these rough places, which will affect the intake effect and the quality of the mixture.

On the other hand, these carbon deposits will also block the idle passage, making the idle control device stuck or out of its adjustment range, resulting in low idle speed, idle jitter, failure of various auxiliary devices to increase speed, flameout of oil collection, excessive exhaust gas and excessive oil consumption.

If you encounter the phenomenon of slow speed increase, quick refueling and tempering, and difficulty in cold starting, then the valve of your car is likely to have carbon deposition. It is found that there is no idle speed when the idle speed is low, the card is issued by stepping on the accelerator, and the battery is changed, so the carbon deposition in the intake pipe of your car is very serious. With the above phenomenon, you should go to a professional repair shop to check the car in time.

It is suggested that the cleaning interval of carbon deposition should still depend on the actual carbon deposition. Generally speaking, whether it is a supercharged engine or a naturally aspirated engine, it is enough to clean the engine carbon deposit every 20,000 kilometers on average under normal driving conditions (including throttle, injector and engine internal cleaning).