What are the hazards of carbon deposition in diesel generator sets?

When the diesel generator set engine is working, the fuel or the lubricating oil that enters the combustion chamber can not be burned 100%, and the unburned part of the oil forms hydrochloric acid and resin-like gum under the catalytic action of high temperature and oxygen, which adheres to the surface of the parts, and then further concentrates into a complex mixture such as asphaltene and oil tar after high temperature, that is, the so-called carbon deposit.

The cylinder head has carbon deposits, which will reduce the cooling effect of the engine, greatly reduce the power and economy of the engine, and the carbon deposits on the top of the piston will form many hot surfaces, causing premature ignition and deflagration, and shorten the service life of the engine. It can even cause the valve stem to move astringently in the valve duct and get stuck.

The carbon deposit in the piston ring groove will make the piston ring side gap and back gap smaller, or even no gap; Cause the piston ring cementation to lose elasticity, and even break the piston ring and pull the cylinder, the fuel injector accumulates carbon deposits, and it is easy to jam the fuel injector, resulting in the lack of cylinder operation or sudden shutdown of the engine, and the starting nozzle of the pre-combustion chamber accumulates carbon deposits, which will block the nozzle hole, making it difficult for the diesel generator set engine to start, and the spark plug has too much carbon deposit, after the fuel is wet, it is equivalent to the parallel shunt resistance between the spark plug electrodes, resulting in the spark plug leakage can not work.

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Diesel engines still produce carbon deposits, but not as much as gasoline cars

1. The impact of engine carbon deposition on the car is still quite large, first of all, to reduce the engine power, that is, to make the power output uneven and gradually decay, in other words, more and more weak. The second is to increase fuel consumption and increase your economic burden. the third is the difficulty of cold start, that is, it is difficult to ignite, and it is not easy to get on the car;

2. Finally, serious carbon deposition in the combustion chamber will also cause cylinder detonation, and there will be a sound of low-speed acceleration, which will cause damage to the piston and crankshaft, thereby seriously affecting the safety of the car. Then there is the excessive discharge, which not only fails the annual inspection and inspection, but also directly aggravates the harm of polluting the environment. The specific principle is that if you do not pay attention to the oil and driving habits for a long time, the wax and gum in the gasoline will accumulate thicker and thicker, and carbon deposits will be formed when they harden after repeated heating.

If the engine burns oil, or the gasoline filled is of inferior quality and has more impurities, then the valve carbon deposition is more or less serious and forms faster;

3. Because the structure of carbon deposition is similar to that of a sponge, when the valve forms carbon deposition to contain spring, a part of the fuel injected into the cylinder will be adsorbed, which makes the concentration of the mixture that really enters the cylinder thinner, resulting in poor working of the starting ZD machine, and abnormal phenomena such as difficult starting, unstable idling, poor acceleration, urgent refueling and tempering, excessive exhaust gas, and increased fuel consumption;

4. If it is serious, it will cause the valve to be closed loosely, so that there is no cylinder pressure in the cylinder and it will not work completely, and even adhere to the valve to make it not return. At this point, the valve and piston will interfere with the movement, which will eventually damage the engine.

How carbon deposits are formed.

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.; The second is due to the oxidation and polymerization reaction of unstable components such as olefins in gasoline at high and medium temperatures, forming colloidal and resin-like viscous, which stays in the fuel injector, air intake valve and other parts, and the sediment 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 judge the organic carbon of a car? When the car has the following conditions, it can be judged that the carbon deposition of the car is more serious:

1. It is not easy to start when the cold car is ignited many times, and it is normal when the car is hot;

2. The engine idle speed is unstable, and the speed is high and low;

3. The driving feeling is weak and stuffy, especially when overtaking, and the speed response is slow, which is very different from the new car;

4. The exhaust of the car is pungent and the emission exceeds the standard;

5. The fuel consumption of the car has increased a lot compared with before.

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 the banquet is generally sent to the 4S store, the disassembly of the engine is more complicated, no matter what parts will be more or less affected by its performance 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 more common in Bu Noisy Mountain, and 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 and discharge it. 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.

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.

No matter how good the diesel with carbon deposits is, it is impossible to achieve 100% combustion, and it will more or less produce carbon precipitation. Carbon deposits are not beneficial, and if there is carbon deposits, they need to be removed. Diesel engines still produce carbon deposits, but not as much as gasoline cars

1.The impact of carbon deposits on cars is considerable. One is that the engine power is reduced, that is, the power output is uneven and gradually decays, in other words, it is getting weaker and weaker.

The second is to increase fuel consumption and increase your financial burden. Third, it is difficult to start cold, that is, it is difficult to ignite, and it is not easy to get on the car; 2.After the most sold year, the serious carbon deposition in the combustion chamber will also cause cylinder knocking, and the low-speed acceleration will cause damage to the piston and crankshaft, which will seriously affect the safety of the car.

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 do not pay attention to the oil and driving habits for a long time, the wax and gum in the gasoline will accumulate thicker and thicker, and after repeated heating, the stove will harden and form carbon deposits. If the oil burns, or the injected gasoline is of poor quality and has many impurities, the valve carbon deposition will be more serious and form faster; 3.

Because the structure of carbon deposition is similar to that of a sponge, when carbon deposition is formed in the valve, a part of the fuel injected into the cylinder will be adsorbed every time, so that the concentration of the mixture that really enters the cylinder is diluted, resulting in abnormal phenomena such as difficult starting, unstable idling, poor acceleration, fast refueling and tempering, excessive exhaust gas, and increased fuel consumption. 4.In severe cases, the valve will not be closed tightly, so that there is no cylinder pressure in the cylinder and cannot work completely, and even the valve will be stuck so that it will not return.

At this point, the valves and pistons interfere with each other and eventually damage the engine.

There are many possibilities for diesel engines to be carbon deposit-free. First, the driver of this car is used to shifting gears at high speeds; Second, the car may often be traveling at high speeds; Third, the car may have an in-situ hot-bed car with speeds above 3,000 rpm in the near future; Fourth, the car may have an additive to remove carbon deposits from the tank; Fifth, the middle or rear of the car may have just been replaced; Sixth, the car could be new.

Diesel engines still produce carbon deposits, but not as much as petrol cars:

1.The impact of engine carbon deposits on the car is still quite large. First, reduce the engine power, even if the power output is uneven and gradually decays, in other words, it becomes less and less powerless.

2.Finally, serious carbon deposition in the combustion chamber can also cause cylinder knocking, and low-speed acceleration will make noise, causing damage to the piston and crankshaft, and seriously affecting the safety of the car. Then the discharge exceeds the standard, which not only fails the annual inspection, but also directly aggravates the harm of environmental pollution.

3.Because the structure of carbon deposition is similar to that of a sponge, when the valve is formed by carbon deposition, a part of the fuel injected into the cylinder will be adsorbed each time, so that the concentration of the mixture that actually enters the cylinder becomes thinner, resulting in poor engine work, and abnormal phenomena such as difficult starting, unstable idling, poor acceleration, fast refueling and tempering, excessive exhaust gas, and increased fuel consumption.

4.If it is more serious, it will cause the valve to be closed tightly, so that there is no cylinder pressure in the cylinder, the work is not thorough, and even the valve will be stuck so that it does not return.

1. Long-term bad driving habits of the owner; 2. The quality of gasoline is poor; 3. The carburetor is aging or damaged; 4. The fuel burns inadequately in the engine.

1. The quality of automobile fuel is unqualified.

If the engine fault light on the dashboard of the car is on shortly after the vehicle is refueled, then it is generally because the oil is not added correctly, the quality is poor, and it is not up to standard, which leads to insufficient combustion of the oil-gas mixture when the engine is working. This may not affect driving safety, but it will cause some damage to the engine.

2. Oxygen sensor failure.

At present, two oxygen sensors are generally installed on the car, one before and after the three-way catalytic converter, and its function is to detect the air-fuel ratio of the engine under different working conditions, and at the same time, the front is to provide a signal for the ECU driving computer to adjust the fuel injection amount and calculate the ignition celery missing time. The latter is used to test the working quality of the three-way catalytic converter. If there is a problem with one of them, or if the plug is damaged or loose, it will cause the mixture to be too thin or too thick, and the engine failure light will also come on.

3. The air flow sensor is faulty.

If the air flow sensor is not working properly, the ECU will not get the correct air intake signal, and the problems will be similar to the above, and the engine will not run properly.

4. Carbon deposition in spark plugs.

Carbon deposits in the spark plug will cause abnormal phenomena such as difficulty in starting, unstable idling, excessive exhaust gas, and increased fuel consumption, and the engine fault light will also be on.

5. Engine knocking.

If there is a knock in the vehicle, the vehicle will be weak and noisy, and in severe cases, there will be a sound of cylinder knocking. At this time, the vehicle's engine fault light will also turn on.

6. The water temperature sensor is damaged.

If the water temperature sensor is damaged, the air-fuel ratio will become thinner or thicker, which will cause the engine to work abnormally and cause the engine failure light to turn on.

7. The engine lacks cylinders.

After the engine lacks cylinders, the vehicle will have large fuel consumption, black smoke, weak car acceleration, serious shaking, and increased engine noise.