What are the causes of excessive oil consumption in automobile engine oils?

The causes and treatment methods are; 1. The owner should replace the valve oil seal of the vehicle in time to ensure the valve tightness. The valve oil seal will be aged and seriously worn out after long-term use, and the vehicle with a longer service life or more kilometers is more likely to burn engine oil; 2. The oil with appropriate viscosity can increase the tightness between the engine piston and the cylinder wall, and the use of this oil can alleviate the phenomenon of oil burning, but it cannot be completely eliminated;

3. Replace the piston ring of the car, and regularly clean the carbon of the surface area of the piston ring;

4. Check the oil ruler frequently, and the scale of the oil ruler is generally added to the best between 4 and 5, that is, eighty percent of the position, too much or too little. In addition, regularly replace the oil and oil filter spare parts according to the requirements of the product manual; 5. Choose high-end or high-quality engine oil, especially for engines with turbochargers, because its higher operating temperature and higher oil requirements. Choose an oil with a low volatility rate, as oil volatilization can also cause the car to burn oil.

In addition, choosing a fully synthetic engine oil can greatly reduce the phenomenon of burning engine oil;

6. Develop good driving habits, especially for new cars during the run-in period, the speed should not exceed 90 kilometers per hour, and the engine speed should not exceed three-quarters of the maximum speed.

Through the above methods can solve the phenomenon of engine oil burning, the owner should avoid the above wrong methods in daily maintenance, and prolong the service life of the engine.

Excessive oil consumption.

A decrease in oil was found on each inspection.

1. Viscosity of engine oil: The lower the viscosity of the oil, the worse its sealing effect and the more it is sucked into the combustion chamber.

2. The driving condition of the vehicle: high-speed driving and frequent acceleration and deceleration will increase the consumption of engine oil.

3. During high-speed driving, the diluted components will evaporate, so excessive oil consumption will be found after high-speed driving.

Generally speaking, the average oil change interval of motor oil for vehicles is 6000-7000 km. Many car owners take this as a fixed understanding. In fact, due to the different engine conditions, oil used, car habits and use environment of each car, its reasonable oil change interval should also be different, and it cannot be generalized.

For example, the fully synthetic engine oil change interval is 8000-10000 km or 3-6 months.

1. Reasons for excessive oil consumption.

1. The piston ring is worn or damaged, and the piston ring is counter-matched or reversed.

After the piston ring is worn, the elastic force will be weakened, the compression force on the cylinder wall will be reduced, and the oil scraping effect will also be reduced; At the same time, after the piston ring and ring groove are worn, the side clearance and back clearance will increase, and the amount of oil channeling will increase, especially when the oil ring is damaged, the amount of oil channeling will increase several times. In addition, when the piston ring is counter-aligned or the piston ring is reversed, it is equivalent to providing a channel for lubricating oil splashed on the cylinder wall, causing oil consumption to soar.

2. The gap between the piston and the cylinder wall is too large.

When the gap between the piston and the cylinder wall is too large or the cylinder is ground into a conical or oval shape, the piston ring, piston and cylinder wall can not fit well, and the splashed oil will run up to the combustion chamber from the gap and be burned, causing a sharp increase in lubricating oil consumption.

3. The intake valve guide is too worn.

When the intake valve guide is seriously worn, the lubricating oil will be burned off from the gap between the valve stem and the duct hole under the action of the vacuum degree of the intake pipe.

4. Excessive oil addition.

Excessive oil addition to the oil pan will increase the amount of lubricating oil splashed on the cylinder wall, resulting in the heavy load of the oil ring and the abnormal operation, the reduction of oil scraping ability, and the increase of oil channeling.

5. The viscosity of the added oil is too low.

The oil with low viscosity is easy to channel, and the oil film is thin, which is easy to burn off; At the same time, the oil with low viscosity also has a large volatilization.

6. The engine speed is too high.

The higher the engine speed, the greater the centrifugal force on the crank and connecting rods, and the more oil is thrown onto the cylinder walls. In this way, the oil ring will not be able to scrape off the oil on the cylinder wall, and the oil will be burned off when it enters the combustion chamber. At the same time, due to the increase in the amount of oil transported, the temperature of the oil in the oil pan will also increase, and the oil will become thinner.

On the other hand, there is also an increase in the amount of atomized oil that is carried out by air from the crankcase vent. As a result, the consumption of motor oil increases.

7. There is leakage in the oil circuit.

Damaged oil seals, broken pipelines, and unsealed joints can all cause oil leakage and increase oil consumption. In addition, the air compressor will also cause a large amount of oil to be discharged with the compressed air, so that the amount of oil in the oil pan will be reduced, and the oil consumption will increase.

Under normal circumstances, oil is also consumed, and in the fundamental sense that there is no such thing as an engine that consumes absolutely no oil. Here's why:

1. The oil is used to lubricate the piston, piston ring and cylinder, and when the piston moves downward, it will leave a layer of oil film on the cylinder wall. When the vehicle slows down, the resulting high negative pressure draws some of this oil into the combustion chamber, and this oil is burned by the hot combustion gases during the combustion process, just like the oil film that is partially left on the cylinder wall.

2. The oil is also used to lubricate the intake valve stem and is sucked into the combustion chamber. The hot exhaust gases also burn the oil used to lubricate the exhaust valves.

Excessive oil consumption in a car can be due to excessive piston and cylinder wall clearance in the car, or because the piston rings of the car are worn or damaged, the piston rings are not installed correctly, or the oil level of the car's crankcase is too high.

The main reason for the oil consumption of automobiles is the incomplete combustion of engine oil.

That is, there is a problem with the cylinder barrel piston, which causes the car to consume engine oil.

1) The gap between the piston and the cylinder wall is too large;

2) The piston ring is worn too much or the elasticity is insufficient;

3) The end clearance, side clearance and back clearance of the piston ring are too large;

4) Each piston ring counterpart;

Regarding this issue, today I consulted 4S after-sales service. Given, there is no direct relationship between the oil life and oil loss. The oil life is automatically calculated by the computer based on the driving time, driving road conditions, kilometers, oil temperature and maintenance time.

As a reminder, it has passed.

Maintenance alerts for May, June or 5,000 kilometres.

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can consult car problems at any time, 24 hours ** answer.

Causes of vehicle oil burning and how to prevent it.

The engine oil itself has a certain amount of consumption, and excessive consumption is the problem of burning the engine and leaking oil. There are many factors that affect the burning of engine oil, such as: fuel quality, driving conditions, driving habits, maintenance habits, etc., the following reasons will aggravate the oil consumption and cause the burning of engine oil, so that the vehicle appears:

1. Carbon deposition occurs in the combustion chamber, which makes the gas ring of the piston ring stuck, and the sealing is poor.

2. Oil sludge is generated in the lubrication system, and the oil sludge blocks the oil return hole of the oil ring and weakens the oil scraping performance.

3. Wear occurs between the piston and the cylinder wall.

4. The valve seal is corroded and aging, and the sealing performance fails.

In addition, cars now have crankcase ventilation systems (exhaust valves), which can also exacerbate oil consumption if there is a problem.

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 back-to-base oil can greatly delay this phenomenon.

2. Pay attention to the cleanliness of the fuel circuit

Fuel in the combustion process is indispensable to produce carbon deposits, and carbon deposits are the root cause of some car failures, such as the aging of valve seals, piston wall clearance, etc., all have a direct or indirect relationship with the formation of carbon deposits, 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 achieve no dismantling and repair to solve the problem of burning engine oil.

What are the causes of excessive car oil consumption?

Causes of burning engine oil

The long cavity stuffiness refers to the lack of clean oil circuits, the replacement of antifreeze is not timely, and the oil service cycle 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.

Subsequent 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.

This is how the piston rings are stuck

The sequence of piston ring stagnation is like this, first starting from the oil circuit, often not clean and burning 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 bad combustion, the oil film is broken and damaged, 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, the piston ring can be released directly with PNF non-destructive repair oil repair agent to solve the problem of burning oil.

Decrypt the correct inspection methods and repair plans for burning engine oil.

Excessive oil consumption is a common fault in the driving of the vehicle. According to the national standard GB19055 2003, in the full-speed and full-load test, the fuel consumption rate of the engine oil must be less than, that is, within the liters of fuel consumption for every 100 liters used. Engines and vehicles that meet this standard have normal and reasonable fuel consumption.

There are several reasons for excessive engine oil consumption in automobiles: 1. There is leakage in the oil circuit, such as crankshaft oil seal damage, oil circuit rupture, gasket and seal ring rupture caused by high oil pressure, etc., which are the causes of oil leakage. In addition, leaking gas from the air compressor can also lead to increased oil consumption.

2. The crankcase fan is faulty. The crankcase fan fault is large, and the oil enters the combustion chamber together with the gas in the crankcase for combustion. In addition, the crankcase vent is blocked and the pressure in the crankshaft is too large, which will also lead to an increase in oil inflow and excessive oil consumption.

3. The gap between the piston, piston ring and cylinder wall is too large, and the cylinder is worn. When the gap between the piston, piston ring, and cylinder wall is too large or does not fit, the oil splashed onto the cylinder wall escapes from the gap to the combustion chamber. In addition, excessive oil consumption can also occur when the cylinder is heavily worn, the elliptical is too large, or the cylinder wall is scratched.

4. The valve guide is excessively worn and the oil seal is aging. In the case of excessive wear of the valve guide, broken valve guide, aging of the valve seal, etc., the engine oil will enter the combustion chamber through the gap between the valve guide and the valve guide to participate in combustion. 5. The engine speed is too high.

When the engine is running at high speed, the amount of oil sprayed on the cylinder wall under the action of inertia increases, the oil ring slips at high speed, the oil control effect decreases, and the oil escapes to the combustion chamber. In addition to the above points, oil pan cracks, turbocharger failures, crankshaft and camshaft damage, inferior oil filling (too low viscosity), etc., can directly lead to excessive oil consumption. Therefore, many car owners recommend regular maintenance of the engine, timely replacement of parts that have reached the end of service life or damage, add high-quality engine oil, do not let the small loss become large, and ensure the normal operation of the car.

Finally, I wish you all a happy life!

The piston ring is worn or broken, or the piston ring is reversed.