What causes the burning of oil in a car engine

What causes the burning of oil in a car engine

The main reason for burning engine oil

1. There is a problem with the accessories, the waste valve, the valve seal, the cylinder is pulled in the cylinder, and the cylinder pressure is insufficient.

2. The oil circuit is not cleaned for a long time, the antifreeze is not replaced in time, the oil service cycle is too long, the piston ring is stuck, and the more common situation is that the piston ring is stuck.

There are several situations of burning engine oil, and the most encountered is the stagnation of the piston ring, and there is also the valve oil seal that burns the engine oil. Most of it is a problem with the piston rings. Before introducing the piston ring problem, let's take a brief look at the oil burning phenomenon of valve oil seals.

Reasons for burning engine oil:The oil circuit is not cleaned for a long time, the antifreeze is not replaced in time, and the oil service life is too long.

Hazards of burning engine oil:Continuously generate greater carbon deposits, which will seriously pull the cylinder. The three-way catalytic converter is completely damaged in the poor combustion exhaust gas,,, and the continuous life-sustaining oil will eventually cause the engine to burst the cylinder.

After-sales hazards of burning engine oil:If it is delayed, it will cause the oil to participate in more and more combustion, and finally pull the cylinder, because the oil participates in the combustion, there are more oil components in the mixture, and the load of the three-way catalysis is too large, and the three-way catalysis will be replaced in advance, and the three-way catalysis is very expensive, which will lead to a sharp increase in costs. The result of relying on oil to continue life is that the cylinder must be dismantled, the engine must be dismantled, the engine must be overhauled, and the valuable three-way catalysis must be replaced in advance.

The piston rings are stuck like thisThe order of piston ring stagnation is like this, first from the oil circuit often unclean combustion is not good, gradually more and more carbon deposits in the cylinder, with the piston operation, began to gradually precipitate to the piston ring, coupled with the high temperature of poor combustion, the oil film is destroyed, and the lower part of the piston ring is also a little bit scabbed oil stuck, so that the piston ring is completely stuck. The traditional way is to use the release agent added to the engine oil to release from under the piston ring, but the oil circuit in the cylinder cannot be cleaned, which is equivalent to half of the operation of the release link, because the cleaning of the cylinder and the oil circuit is not completed, and the hidden danger is great in the later stage. Moreover, it is necessary to constantly change the oil and oil grid, and the cost of use of the car owner is relatively high.

Therefore, the benefits brought by different starting points of technical paths to car owners are completely different. As long as you make sure that there is no fault in the external accessories, you can determine that the oil burning problem caused by piston ring stagnation, then you can avoid detours, avoid wasting unnecessary costs, and smoothly release the piston ring to solve the oil burning problem caused by piston ring stagnation that has been plagued for a long time. It is recommended that you check it as soon as possible, because the longer the delay, the greater the risk of pulling the cylinder later, if the cylinder is seriously pulled, you want to overhaul it if you want to overhaul it, the risk of overhaul and the loss of the residual value of the vehicle, you also know, in addition, the three-way catalysis will also be damaged because of the excessive load, and the cost of the ternary is very high.

As long as the accessories are not faulty, you can directly use the general burning oil repair agent to release the piston ring and solve the problem of burning oil.

How to know if the burning of engine oil is serious or not.

Does engine sludge need to be cleaned, and the relationship between oil sludge and engine oil.

There are four common reasons for burning engine oil.

1.If you don't clean the oil circuit for a long time or don't do effective oil circuit cleaning, detergents are used at will, and using detergents and effective detergents are two different things;

2.The antifreeze replacement cycle is too long or not changed at all;

3.The oil change interval is too long;

4.Long-term or often short-distance driving.

The above four points of the vehicle that burns engine oil must be occupied by one or three points.

Precautionary measures for burning engine oil:

1. Use high-quality engine oil

Engine oil is very easy to corrode and age in a long-term high temperature state, resulting in the oil film becoming thinner, and it is easier to escape to the combustion chamber to participate in combustion, so the use of high-quality engine oil can greatly delay this phenomenon.

2. Pay attention to the cleanliness of the fuel circuit

Carbon deposition is indispensable in the combustion process, and carbon deposition is the root cause of some automobile failures, such as the aging of valve seals, piston wall clearance, etc., which are directly or indirectly related to the formation of carbon deposition, so keeping the fuel oil circuit clean is of great help to prevent burning engine oil, of course, this needs to be done with the help of high-quality fuel additives.

3. With the help of external forces

Considering the relationship between domestic oil products, it is necessary to use high-quality engine oil and (PNF) fuel additives to achieve, which is also the key to solving the problem of burning engine oil without dismantling and repair.

There are many possible reasons why an engine burns oil, and the most common ones are the following:

1. Use engine oil with poor quality or viscosity grade that does not meet the requirements. In addition, too low or too high oil viscosity can lead to poor engine lubrication, increased wear of piston rings and cylinder walls, and reduced sealing performance, resulting in oil burning.

2. The matching gap between the piston ring and the cylinder wall is too large, the piston ring is improperly installed or the sealing is poor, and the oil on the cylinder wall enters the combustion chamber, causing the phenomenon of burning the engine oil; In addition, poor sealing performance of the valve seal, damage to the crankcase forced draft valve (PCV) or crankcase vent blockage can cause excessive pressure in the crankcase to cause the oil to enter the cylinder with the crankcase gas and participate in combustion.

3. Burning engine oil caused by excessive oil filling. When the oil is filled above the center line, the part of the engine lubrication process that passes through splash lubrication will be too much into the combustion chamber due to the high oil pressure.

4. Oil leakage from turbocharger. The turbocharger is mounted at the front of the exhaust pipe and operates at a very high temperature, and the turbine and pump wheels can reach 120,000 revolutions per minute when the engine is running at full load. The turbine shaft has oil-lubricated floating bearings, and the car has one oil passage to the turbocharger.

Oil leaks from pipes or bearings can allow oil to seep from the turbocharger into the exhaust pipe. When the exhaust pipe temperature is high, the oil is baked and discharged into blue smoke.

5. There is leakage in the valve oil seal, which means that the oil leaks into the combustion chamber through the valve oil seal.

The engine burns oil for the following reasons:

1. Poor valve sealing: The valve is to prevent oil leakage into the combustion chamber, but with the increase of service life, there will be wear and aging, which makes the valve seal poor, so that the oil is easy to enter the combustion chamber.

2. The piston gap becomes larger: often long-term operation, there will be carbon deposition in the piston part, and there will also be a certain degree of wear, with the growth of time, the piston gap continues to increase, and the oil is easier to enter the combustion chamber, which is also often said that after the vehicle is used for a long time, it is necessary to replace the higher viscosity oil.

3. The viscosity of the engine oil is too small: if the viscosity of the engine oil is too small, the phenomenon of burning the engine oil will also occur. The viscosity of the engine oil is too small, it has good fluidity, and it is easy to penetrate into the cylinder, and then participate in combustion.

4. Excessive oil volume: If the oil pressure is too large, part of the oil will be pressed into the cylinder, resulting in the phenomenon of burning oil. , the solution of burning oil in the car engine:

Repair the engine, remove carbon deposits from the engine, and replace damaged parts. If the condition is more severe, the engine needs to be overhauled.

The main phenomenon of burning engine oil is the exhaust pipe emitting blue smoke, and the oil consumption in the engine is significantly increased. There are two reasons for this:

1. Natural wear and tear.

With the increase of the mileage of the car, the wear between the piston and the cylinder gradually increases, when the wear increases to a certain extent, the cylinder blow-by will begin, and then the phenomenon of burning engine oil will occur. When the valve oil seal is damaged, it will make the oil burning phenomenon more obvious.

2. Improper maintenance.

1. Maintaining the engine according to the specified mileage will prolong the service life of the engine. On the contrary, even if the mileage is exceeded and not insured (i.e., the insurance is delayed). If the oil is too dirty, the impurities in the oil will accelerate the wear of the engine cylinder.

2. Too much oil is added.

3. Improper selection of air filter element, machine filter element, engine oil, etc., the gas impurities entering the cylinder can not be well purified, and all kinds of dust particles enter the cylinder, accelerating the wear of the cylinder. The quality of the filter element is poor, and it cannot play the role of filtering impurities in the oil. Counterfeit engine oil or the oil used does not match the oil grade of the vehicle used, so that a good oil film will not be formed on the friction surface of the engine.

4. The ignition time is too early or too late. Detonation occurs too early or too late, which increases the engine temperature, and in severe cases, the piston will fall off the top and the cylinder block will be scrapped. In its initial stage, there will be serious cylinder blow-by gas and burning engine oil.

5. There is too much dirt in the water tank in the cooling system. The radiator and condenser are too dirty, which reduces the ventilation and heat dissipation capacity, and increases the normal working temperature of the engine. Due to the high temperature, the quality of the oil film produced by the lubricating oil when rubbing is reduced, and the wear of the cylinder is intensified.

There are many reasons why engine oil burns. The most common are as follows:

1.When the car is cold, it burns the engine oil. The phenomenon is that there is a lot of blue smoke coming out of the engine exhaust pipe, but it is normal when the car is hot. The possible cause is that the valve oil seal is corroded and aged, and the seal is not tight, resulting in the above phenomenon after the oil leaks from the valve into the combustion chamber.

2.When the car is hot, the oil burns. The phenomenon is that the exhaust pipe does not emit blue smoke when the car is cold, and the exhaust pipe emits heavy blue smoke after the car is hot, which is generally caused by the piston ring problem.

There are many reasons why piston rings can go wrong, such as ordinary natural wear and tear. As the car's mileage increases, the wear between the piston and the cylinder gradually increases. When this wear increases to a certain extent, the cylinder will start to blow up, and then the phenomenon of oil burning will occur.

Another is that the engine is not maintained in accordance with the regulations, and the engine is not maintained in time if the mileage is exceeded, resulting in the oil being too dirty, and the impurities in the oil will accelerate the wear of the engine cylinder.

It could also be an air filter, engine filter, engine oil, etc. Improper selection, the gas impurities entering the cylinder can not be well purified, and all kinds of dust particles enter the cylinder, accelerating the wear of the cylinder.

There are other reasons such as using substandard oil, not changing the oil and oil filter for a long time, starting a large throttle when it is cold, running without oil for a long time, etc.

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There are many reasons why a car engine burns oil, and the most common reasons are the following:

1. When the car is cold, the oil is burned, and the phenomenon is that the engine exhaust pipe emits a lot of blue smoke, but it is normal after the car is warmed. The possible reason is that the valve oil seal is corroded and aged, resulting in a loose seal, which leads to the above phenomenon after the oil leaks from the valve into the combustion chamber.

2. Burn engine oil when the car is hot, the phenomenon is that the exhaust pipe does not emit blue smoke when the car is cool, and the blue smoke of the exhaust pipe is heavier after the hot car, which is generally caused by the problem of the piston ring. There are many reasons for the problem of piston rings, such as the usual natural wear, with the increase of car mileage, resulting in the gradual increase of wear between the piston and the cylinder, when this wear increases to a certain extent, the cylinder channeling will begin, and then the phenomenon of burning engine oil will occur.

Another is that the engine is not maintained in accordance with the regulations, and the engine is not maintained in time after the mileage is exceeded, resulting in the oil being too dirty, and the impurities in the oil will accelerate the wear of the engine cylinder.

It is also possible that the air filter, filter element, engine oil, etc. are not properly selected, and the gas impurities entering the cylinder cannot be well purified, and various dust particles enter the cylinder, accelerating the wear of the cylinder.

Other reasons include the use of substandard engine oil, failure to change the oil and oil filter within the expiration date, starting at high throttle in a cold car, and running under a long lack of oil.

The reasons for burning engine oil in automobile engine are: 1. Burning engine oil when cold car may be due to the corrosion and aging of the valve oil seal, resulting in poor sealing, resulting in the above phenomenon after the oil leaks from the valve into the combustion chamber for combustion; 2. Burning engine oil when heating the car is generally caused by the problem of piston rings, with the increase of car mileage, resulting in a gradual increase in the wear between the piston and the cylinder, the cylinder channeling will begin, and then the phenomenon of burning engine oil will occur; 3. Failure to maintain the engine in accordance with the regulations, failure to maintain the engine in time after exceeding the mileage, resulting in excessive dirty oil, and impurities in the engine oil will accelerate the wear of the engine cylinder; 4. Improper selection of air filter element, machine filter element, engine oil, etc., the gas impurities entering the cylinder can not be well purified, and various dust particles enter the cylinder, accelerating the wear of the cylinder.