How to prevent turbocharged engines from burning oil

There are two ways to solve the problem of burning engine oil

Overhaul. PNF restoratives.

Benefits of this one:In the case of overhaul, the cost is very high, the vehicle depreciates quickly, and the later run-in is also very troublesome. First of all, you have to find out the reason for your burning oil, oil circuit blockage, carbon deposits, piston ring stagnation can be repaired with repair agent, there are riders who have repaired it with repair agent before, you can refer to it.

The oil itself is consumed to a certain extent. If you consume too much, there is a problem of burning engine oil. Burning engine oil is caused by the following factors, as long as the following problems are solved, burning engine oil can be solved.

There are many factors that affect the burning of engine oil, such as: fuel quality, driving conditions, driving habits, maintenance habits, etc.

Avoid burning oil in turbocharged engines

Choose a high-quality lubricant:

Generally, the turbocharger is activated when the engine speed reaches 3,500 rpm and ramps up rapidly until 6,000 rpm. The higher the engine speed, the stronger the shear resistance of the oil is required. Only in this way can the lubrication capacity of the oil not be reduced at high speeds.

Therefore, when choosing a motor oil, you should choose a high-quality engine oil, such as high-grade fully synthetic engine oil.

First, the main reason for burning engine oil.

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.

Second, the method of preventing the burning of engine oil.

1. Use engine oil that meets the technical requirements of the vehicle. Many car owners never read the vehicle manual, and they don't know what quality and viscosity grade oil their vehicles use for a few years, and there is a lot of arbitrariness in the use of engine oil. When using engine oil, one is to pay attention to the quality index, and the other is to pay attention to the viscosity index.

The quality index refers to the grade above SL as much as possible, and the viscosity index should be strictly in accordance with the provisions of the viscosity index in the automobile manual, and cannot be too low or too high.

2. Avoid frequent rapid acceleration and long-term ultra-high-speed driving. When the engine rotates at ultra-high speed, it is easy to break the lubricating oil film, resulting in poor lubrication and dry grinding of the rotating parts, and when it becomes a regular operation, it will make the engine wear abnormally and burn the oil, therefore, maintaining economic speed is one of the best ways to prevent the phenomenon of burning oil.

3. The oil must meet the specifications when filling. When the oil filling volume exceeds the center line, the repairman should be asked to pump out the excess oil, in addition, the oil volume should be observed before the next day.

4. If you find that the engine oil is burned, go to the maintenance station for inspection as soon as possible. If it is due to engine failure (such as poor piston ring sealing, valve oil seal leakage, cylinder gasket leakage, etc.), you should go to the maintenance station as soon as possible to check and repair the fault as soon as possible.

The part of the oil that burns the engine due to turbocharging is usually in the seals around the turbine, because the turbo rotates at a very high speed and the temperature is also high. So just change the seals, or change the turbine.

Avoid running at high speed of cold cars, and choose high-grade engine oil. Idle for a few minutes after driving at high speed. This slows down the wear and tear of the turbine. At the same time, the air cleaner is changed frequently to reduce the wear of the intake turbine.

Replacing the oil seal of the supercharger can be solved.

There are many reasons why turbocharger engines tend to burn oil. Engines with turbochargers have relatively high requirements for the quality of the oil, which is resistant to high temperatures, oxidation and good fluidity. If poor oil is used, the oil will be oxidized and acidically corroded by the oil, the oil seal and shaft will deteriorate, and the fluidity will deteriorate, and the lubrication will not cause wear.

Contamination of the engine intake system, such as air grid not being maintained on time, causes wear and tear on the supercharger. The turbocharger engine burns oil due to improper operation, and it is necessary to pay attention to cooling down and depressurizing after high-speed driving. Mechanical turbochargers are driven by exhaust gas, which naturally has a high temperature conduction and high oil pressure in the oil duct at high speeds.

Sudden shutdown and flameout, high temperature and high pressure affect the oil seal, resulting in burning engine oil.

Why does a turbocharger burn oil? When the rotor in the exhaust gas turbocharging is working at a high speed of more than 100,000 revolutions in a high-temperature working environment of more than 600 degrees, the oil lubricating the rotor and the air filter element that filters the air will be incorrectly selected or not maintained in time, which will lead to the turbocharging and burning the oil!

Cars that choose to load high-quality turbochargers have also run 100,000 or even 200,000 kilometers without the legendary turbocharger damage. Most of the turbochargers that have problems today are due to a damaged oil seal between the turbocharger and the intake pipe, resulting in large-scale oil burning.

Ways to prevent it.

1. The use of fully synthetic engine oil will have better wear resistance and adhesion than mineral oil, which can reduce and alleviate the wear on the surface of high-speed rotating parts, thereby reducing the probability of burning engine oil.

2. Appropriately shorten the interval mileage of maintenance;

3. Try to avoid rough driving;

4. Reduce oil consumption as much as possible through the correct running-in method. Because the matching of many parts of the car is not very perfect when it first appears, if you throttle or tell to drive during the run-in period, the driving system and transmission of the car may cause adverse effects, and it also has a certain impact on the problem of oil consumption.

1. The gap between the piston and the cylinder wall is too large, resulting in the oil splashing up and down to the combustion chamber as the piston moves up and down.

2. The viscosity of the oil is too low, and the lubrication effect is not good, which aggravates the wear of the piston ring, resulting in upward channeling and volatilization.

3. The piston ring is worn, or the counterpart position is reversed during packaging.

4. The vent of the crankcase is blocked, resulting in excessive oil pressure, increased backflow resistance, and carbon deposition caused by burning and detaining on the inner wall of the cylinder for a long time.

5. The valve oil seal is aging and failing, and under the influence of the vacuum degree of the intake pipe, the oil enters the cylinder from the gap between the valve stem and the duct hole for combustion.

6. If there is too much oil filling, it will also flow into the combustion chamber, resulting in the phenomenon of burning engine oil.

Be sure to change the oil or lubricating oil in time, be sure to choose a good quality oil, usually develop good driving habits, never let the supercharger appear overloaded, and then replace parts and accessories in time, to be more aware of the change of turbocharger in time, the vehicle must be warmed up in advance before driving.

Usually, drive the car to the repair shop, let the master of the repair shop deal with the engine, clean up the car parts, and you can prevent it.

It should be done every three months or so, and the car must be serviced and the oil must be changed, and secondly, the filter should also be changed.

With a turbine.

The turbocharger model generally does not have the phenomenon of burning engine oil, and the burning of engine oil is caused by the phenomenon of turbine maintenance.

Turbocharger.

It is recommended to pay attention to the following use suggestions, it is recommended to use synthetic lubricating oil and regularly replace and clean.

Air filter, secondly, during driving, after the vehicle is running at high speed, never turn off the engine immediately. If the ignition suddenly goes out, the oil lubrication will be interrupted, and the heat inside the turbocharger cannot be taken away by the oil, which is easy to cause the turbocharger shaft to be with.

"Bite to death" between the bushings.

In addition, after a sudden shutdown of the engine, the oil to the turbocharger stops flowing, if at this time.

Exhaust manifold. The heat is absorbed into the turbocharger housing, boiling the oil that stays inside the turbocharger.

Carbon deposits. When this kind of carbon accumulation increases, it will block the oil inlet, resulting in a lack of oil in the bushing, accelerating the wear between the turbine shaft and the bushing, and even producing the serious consequence of "biting death". Therefore, the engine should be turned off before it should.

Idle for about 3 minutes to reduce the turbocharger rotor speed. But.

Turbocharged engine.

It is also not allowed to idle for a long time, otherwise the supercharger will also cause poor lubrication due to too low oil pressure, and the general idle time should not exceed 10 minutes.

Most of the oil burning in turbocharged engines is caused by the piston rings being trapped by carbon deposits. Relying on the addition of high-viscosity engine oil to continue life is only an expedient measure to cure the change. The poor power of the engine is due to the fact that the oil participates in the combustion and forms more carbon deposits, which in turn aggravate the degree of oil burning and form a vicious circle.

Excessive carbon deposits will clog the fuel injector, resulting in poor atomization and poor combustion, resulting in higher fuel consumption and lower power. In the long run, it will cause the cylinder wall to be strained, or even burst the cylinder, and finally it can only be disassembled and overhauled.

Four reasons why you burn engine oil.

A ...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;

IIThe antifreeze replacement cycle is too long or not changed at all;

IIIThe oil change interval is too long;

IVLong-term or often short-distance driving.

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

How the piston rings are stuck.

The principle of piston ring stagnation should start from the oil circuit, the oil bearing temperature is 110 degrees, and the high temperature caused by the long-term unclean lead of the oil circuit makes the oil at a temperature of 120 degrees or higher for a long time, so that the oil will be exhausted in advance, the small hole of the oil ring is very small, and the oil inside will be dried and scabbed for a long time, and a cylinder stuck is 5000 kilometers of a liter of oil, at this time, the working conditions of other cylinders will also begin to be bad, and soon the 4 cylinders will be stuck. It becomes a liter of engine oil for 1000 kilometers or even hundreds of kilometers. Therefore, in order to solve the problem, we must start from the root oil circuit, which is the way to remove the root.

The solution to burning the oil.

In the habitual thinking of car enthusiasts, they always think that burning engine oil should be overhauled, so that they not only have to bear high maintenance costs, but also bear the unpredictable or false rental risk and depreciation loss of the vehicle due to overhaul. Destroy the airtightness and precision of the engine. And there is a possibility that the engine oil will burn again after tens of thousands of kilometers, so overhauling the engine is not sustainable.

Now the no-dismantling technology has been very mature and gradually accepted by the majority of car owners. In particular, the non-destructive repair products containing PNF patented technology have completely gotten rid of the technical shackles of the operation of the auto repair shop, and the owner can operate it himself without removing a screw, and the piston ring is repaired and released during driving, and the effect is remarkable.

Models with turbochargers generally do not have the phenomenon of burning engine oil, and the burning of engine oil is caused by the phenomenon of turbine maintenance, therefore, for models with turbochargers, it is recommended to pay attention to the following suggestions, it is recommended to use synthetic lubricating oil and regularly replace, clean the air filter, and secondly, in the process of driving, after the vehicle runs at high speed, do not turn off immediately. If the ignition suddenly turns off, the oil lubrication will be interrupted, and the heat inside the turbocharger cannot be taken away by the oil, which is easy to cause the turbocharger to "bite" between the shaft and the shaft sleeve.

In addition, when the engine suddenly stalls, the oil to the turbocharger stops flowing, and if the temperature of the exhaust manifold is high at this time, its heat is absorbed into the turbocharger housing, and the oil that stays inside the supercharger is boiled into charcoal. When this kind of carbon deposit wheel accumulates more and more, it will block the oil inlet, resulting in a lack of oil in the shaft sleeve, accelerating the wear between the turbine shaft and the shaft sleeve, and even producing the serious consequence of "biting to death". Therefore, before the engine is turned off, it should be idle for about 3 minutes to reduce the speed of the turbocharger rotor.

However, the turbocharged engine should not idle for a long time, otherwise the supercharger will also cause poor lubrication due to low oil pressure, and the general idle time should not exceed 10 minutes.

It is recommended to use synthetic lubricating oil and regularly replace the collapsed and clean air filter cover, and secondly, in the process of driving in the state, after the vehicle is running at high speed, do not turn off the engine immediately, and turn off the engine suddenly.