What causes a car engine to pull the cylinder?

Engine cylinder pulling, that is, the piston or piston ring pulls the inner surface of the cylinder bore out of the groove, and this fault mostly occurs during the new car closing period (including overhaul vehicles). Most of the parts on the new car are machined and other forms of machining, and regardless of the roughness, there will be geometric defects, such as the microscopic unevenness of the surface of the part. When the surface of two parts with microscopic unevenness is rubbed, the uneven bumps and grooves will bite each other and grind off quickly, so that a more intense wear occurs, that is, the so-called "walking wear".

According to the wear characteristic curve of the dynamic parts, the parts wear out quickly during the closing period of the new car, which is an objective law of mechanical wear. When the new car is closed, the metal particles and oxides that are grinded off, and the impurities and granules that exist due to unclean cleaning during assembly are mixed with lubricating oil, and then they will be carried by the lubricating oil to the mating surface, which will accelerate the wear of the surface of the parts (abrasive wear). In addition to the above reasons, there are:

When the engine is assembled, the piston and the cylinder liner (and other parts) are not properly matched or the cylinder is deviated; The material is not suitable and the heat treatment is improper; Poor lubrication due to insufficient lubricating oil or deterioration; Removing the speed limiter prematurely, overloading and overspeeding; Blindly dismantling the thermostat and blocking the small circulation channel, causing the water temperature to be too low. The above situation is often prone to engine cylinder pulling, piston hairing, see figure.

Generally, vehicles with the phenomenon of burning engine oil will have different degrees of exhaust "blue smoke" symptoms, oil consumption increases significantly, and the engine oil has to be replenished in a short period of time. The phenomenon of burning engine oil in the vehicle will lead to an increase in carbon deposits in the combustion chamber, a decrease in the economy and power of the vehicle, and excessive exhaust emissions. The poor sealing of the cylinder is the main cause of oil burning.

The poor sealing of the cylinder is mainly due to the excessive matching gap between the piston and the cylinder wall, the improper installation of the piston ring or the poor sealing, and the oil on the cylinder wall enters the combustion chamber, causing the phenomenon of burning oil. In addition, poor sealing performance of the valve seal, damage to the crankcase vent valve, or crankcase vent blockage will cause the oil to enter the cylinder with the crankcase gas to participate in combustion. For some old cars, it is relatively normal to burn engine oil, and we can appropriately choose slightly more viscous engine oil to increase the sealing between the piston and the cylinder wall.

Of course, the ultimate solution to the problem of burning engine oil is to overhaul the vehicle more thoroughly and fundamentally solve the problem.

The hazards of burning engine oil in automobiles and their solutions are as follows:

1. Slight burning: fuel consumption, insufficient power, easy to produce carbon deposits, after carbon deposits, it will be difficult to get on the car, and the engine will shake.

2. Severe burning: The oil consumption is very large, and the engine is very worn. When the oil burns out, the engine will be overhauled!

3. Identification and inspection: the concentration of blue smoke. Pull out the oil ruler often to see how fast the oil is consumed.

Solution: 1. If the old vehicle burns oil, you can appropriately choose to add oil with relatively high viscosity to the engine to increase the tightness between the engine piston and cylinder wall. Of course, the ultimate way to completely solve the problem of burning engine oil is to overhaul the vehicle more thoroughly in order to fundamentally solve the problem.

2. If you find that the vehicle has signs of burning engine oil, you should always check the scale of the engine oil, regularly replace the oil and oil filter according to the requirements of the product instruction manual, and replace the spare parts of the oil filter.

When it comes to engine cylinders, some people think that it is caused by engine oil, and some people think that it is caused by carbon deposits. What is the reason for pulling the cylinder, we will be clear with a case analysis.

What does it mean to pull the cylinder of the engine? What causes this?

Pulling cylinders is one of the common faults of automobile engines. The so-called "pulling cylinder" means that the inner wall of the cylinder is drawn into a deep groove, and the piston and piston ring lose tightness when rubbing against the cylinder wall, resulting in the reduction of cylinder compression pressure and the loss of power; The downward channeling of the combustible mixture increases the pressure of the crankcase, which will cause the crankcase ** in serious cases; The lubricating oil is channeled into the cylinder, causing the phenomenon of burning oil; Smoke from the exhaust pipe is severe; Abnormal engine noise; The engine does not work properly or even stalls.

Common reasons for pulling cylinders:

1. The engine cooling system leaks, lacks water, and fails to replenish in time, resulting in engine overheating;

2. The oil pressure is too low, and the sealing and lubrication function of the cylinder are lost;

3. The piston ring is broken and the cylinder wall is scratched;

4. The piston pin is assembled too tightly, causing the piston to deform;

5. The piston is seriously thermally deformed or the roof is melted;

6. The engine runs at high speed or overload for a long time.

What are the reasons for the production of the pull cylinder:

1. The gap between the piston and the cylinder is too small. This is easy to understand, after an overhaul, if it is not properly assembled, the cylinder will be pulled very quickly.

2. The piston ring is stuck. After the piston ring is stuck, the piston ring can not play the role of oil scraping and air sealing, the piston ring loses its elasticity, and the friction between the piston wall becomes larger, which will also cause the piston to deviate from the axis direction, the gap between the local and the piston wall is too small, and the oil film is too thin and produces a cylinder. The main cause of piston ring seizure is carbon deposits, which bond to the piston ring, rendering it immobile.

The first carbon deposits include burning engine oil, poor quality of fuel oil, and so on.

3. Improper selection of engine oil and poor lubrication. Improper selection of engine oil mainly refers to the low viscosity of the engine oil, the oil film is too thin to play a good lubricating role, and it is easy to cause the oil film to rupture under high temperature and stress. Of course, if you choose an oil with too high viscosity, it will cause other reasons such as burning engine oil and high fuel consumption.

4. High load operation during the run-in period or after overhaul. The metal surface is not very smooth, it is very uneven under the microscope, the so-called running-in period is to smooth the uneven metal surface, at this stage the oil will produce a lot of metal chips, if the run-in period is high-loaded, it is easy to contact between the metal and the metal to cause the cylinder.

5. Poor quality pistons. This reason is a bit nonsense, but even if the piston quality is poor, as an end customer, it is impossible to go to the engine manufacturer to theorize.

6. There is a problem with the cooling system and the heat dissipation is not good. This reason is mainly due to the fact that the antifreeze is consumed, or it is leaking, and it cannot dissipate heat normally. Failure to dissipate heat properly will lead to high engine temperatures, thinner oil films, and poorer lubrication.

When overloaded, the engine temperature is high, coupled with abnormal heat dissipation, the probability of tile holding is greater.

7. There is a problem with the three filtration, and there are too many impurities. After the problem of the third filter, there will be a large number of impurities in the oil, and solid impurities will enter the gap between the piston and the cylinder wall, which will cause the cylinder to be pulled.

Pulling cylinders is one of the common faults of automobile engines. The so-called "pulling cylinder" means that the inner wall of the cylinder is drawn into a deep groove, and the piston and piston ring lose tightness when rubbing against the cylinder wall, resulting in the reduction of cylinder compression pressure and the loss of power; The downward channeling of the combustible mixture increases the pressure of the crankcase, which will cause the crankcase ** in serious cases; The lubricating oil is channeled into the cylinder, causing the phenomenon of burning oil; Smoke from the exhaust pipe is severe; Abnormal engine noise; The engine does not work properly or even stalls.

Common reasons for pulling cylinders:

1. The engine cooling system leaks, lacks water, and fails to replenish in time, resulting in engine overheating;

2. The oil pressure is too low, and the sealing and lubrication function of the cylinder are lost;

3. The piston ring is broken and the cylinder wall is scratched;

4. The piston pin is assembled too tightly, causing the piston to deform;

5. The piston is seriously thermally deformed or the roof is melted;

6. The engine runs at high speed or overload for a long time.

There are several reasons why an engine pulls a cylinder. 1: If the temperature is too high, the piston surges too much and the gap between the cylinder liner is too small or there is no gap or there is too much interference, which will cause the cylinder to be pulled.

2: Too many impurities or foreign matter entering the cylinder or a large amount of carbon deposits in the piston ring piston. will pull the cylinder.

Three: the viscosity of the engine oil is too low or too high or there are impurities in the oil. will pull the cylinder.

The reasons why a car engine pulls a cylinder are:

1) The oil inlet filter is worn. Impurities from the fuel enter the cylinders.

2) The quality of the fuel is not enough, and too much carbon is deposited in the cylinder after combustion.

3) The quality of the oil in the engine is not enough, it contains impurities or the viscosity is not enough at high temperatures.

Hello! In order to avoid this, the vehicle needs to be maintained regularly, and if the oil indicator light is on, it can no longer continue to drive, and it should be repaired as soon as possible.

There are many reasons for the cylinder of the automobile engine, mainly due to the problem of water temperature and the problem of engine oil, which are the main reasons.

The engine cylinder is mainly caused by the lack of water inside the engine and the temperature is too high, so the engine cylinder is generally caused by the lack of water or oil in the engine and the temperature is not high.

Hello! 1.Failure of automobile engine parts.

2.Poor engine cooling and subcooled operation. When the water temperature is below 65°C, the motor is called cold running. The engine started working before the water temperature reached a certain level.

3.The gap between the piston and the cylinder is too small.

4.Driving habits Drive directly on the road without heat in winter:

1. The engine overheating is caused by leakage and lack of water, and the engine is not replenished in time; 2. The piston ring is broken and the cylinder wall is scratched; 3. The piston pin clamp falls off and scratches the cylinder wall; 4. The piston ring is stuck in the ring groove due to carbon deposition and loses its sealing effect; 5. The piston pin goes out and scratches the cylinder wall; 6. Foreign matter enters the cylinder.

What is the cause of a car engine pulling cylinder? Remembering the cylinder, I think there are several reasons, but it is possible that the piston ring is broken. In addition, there is a piston boy loose mine, which will also cause the phenomenon of the automobile pulling cylinder engine pulling the cylinder.

What is the reason for the cylinder pulling the cylinder of the engine of the car? In the actual use process, the main reason for the car cylinder is that your gasoline is wrong, so there is a problem with the quality. However, this phenomenon can also be caused by some improper operation methods.

The engine is pulling the cylinder, what causes it? If the car engine pulls the cylinder, it should be caused by the absence of engine oil.

Talking about the reason for the "pulling cylinder" of the automobile engine, let's first understand what is the engine "pulling the cylinder"? Generally speaking, the cylinder inner wall of the engine has different degrees of abrasion, so that the cylinder piston, piston ring, and cylinder wall lose their tightness when doing work. However, when the engine cylinder has the symptoms of pulling the cylinder, it will lead to a series of problems such as reduced fuel combustion efficiency and reduced pressure in the cylinder, which will lead to a decrease in engine power.

There are many reasons why an engine pulls a cylinder, and there are four main reasons. Let's take a look! One reason:

In winter, there is no hot car on the road. We all know that the temperature is low in winter. When the owner drives on the road, he should do a short hot car operation to reduce the damage to the engine cylinder.

After the car was parked in the open overnight in winter, the oil temperature was too low, and most of the oil had flowed back to the bottom of the engine. If the car is not hot and driven directly on the road, the oil will not be able to perform its lubricating role, causing damage to the engine components. The special air shot is not in winter, there is no hot car, the lubrication of the engine oil and the low temperature of the water tank, driving directly on the road will cause the engine to pull the cylinder.

Reason 2: Long-term violent driving. After a car engine runs for a long time, the temperature inside the engine is very high.

If the engine is not dissipated in time, it will bring fatal injuries to the engine. For example, when the car is driving in bad road conditions for a long time, when the engine is overloaded for a long time, the cylinder of the engine will be heated and expanded, reducing the tightness of the piston and cylinder, and when the lubrication effect of gasoline is weakened, it will lead to the problem of pulling the cylinder of the engine. Reason three:

The engine runs at high speed. When the engine is running at high speeds, especially at no load, the most common consequence is that the vehicle's engine will knock, which will lead to cylinder pulling problems in the engine. For example, for some old cars, even some high-end models, exhaust gas detection in the case of no load and high speed for 3 minutes cannot escape the fate of engine cylinder pulling.

Therefore, in the process of using the car, the owner must pay attention to the matters of using the car, and do not drive at high speed in neutral gear, otherwise it is easy to cause damage to the engine cylinder. Reason 4: The car is not properly maintained.

As an automobile product, after a certain period of use, it is necessary to do a good job of maintenance work in time to avoid damage to the engine and other parts of the vehicle. In particular, some novice car owners do not do maintenance and oil change according to the actual car condition, or insist on maintenance once every 6 months or 5000 kilometers. In fact, strictly speaking, these are some wrong car maintenance habits.

That is to say, in the process of using the car, the owner needs to take care of the car from time to time according to the environment, frequency and other factors of the car, combined with the lubrication effect of the engine oil, to avoid the problem of engine cylinder. Regarding the above analysis of the reasons for the pulling of the cylinder of the car, do you also have these bad car habits in the usual process of renting the car? If you also have these bad car habits, you must correct them in time to avoid the problem of pulling the car.