What does the wear and tear of the engine come from, and how to protect the engine from wear.

There are generally five major reasons for engine wear: 1. Corrosion and wear, fuel will produce many harmful substances after combustion in the engine combustion chamber, generally 1-5 pounds of nitrogen and sulfuric acid will be produced per 100 gallons of gasoline burning, these substances will not only cause corrosion to the cylinder, but also will be channeled into the engine through three piston rings (top, middle and bottom rings), causing metal corrosion to the main components of the engine, such as cam crankshaft, etc., which cannot be eliminated by the use of lubricating oil alone.

2. Rust and wear, the engine is cooled from high temperature to low temperature after shutdown, and this temperature change process will cause water condensation and water accumulation inside the engine. This can cause severe metal rust to the engine, especially if the engine is started again for short distances and the engine temperature is not yet able to evaporate the water vapors. This is also something that lubricants cannot solve.

3. Strong wear caused by dust, the engine needs to inhale air when burning, and even if the air filter device is good, it is difficult to absolutely avoid dust from being sucked into the engine with air. Strong wear caused by the inhalation of dust cannot be completely eliminated by lubricating oil. Especially in China's arid and rainless areas with large winds and sands, this kind of strong wear and tear is more prominent.

Fourth, cold start dry friction, the research of General Motors Company of the United States shows that when the car engine stops for 4 hours, all the lubricating oil on the friction interface will flow back into the lubricating oil tank. At this time, when the engine is started, because the oil pump has not had time to hit the lubricating oil to the lubrication parts, there will be dry friction due to periodic lubrication loss in a short time, resulting in serious abnormal and strong wear of the engine. This kind of strong wear is something that lubricants simply can't solve.

Other relevant data research points out that this strong wear accounts for more than 70% of the total wear of the engine).

5. Normal wear and tear, wear and tear when the engine is running normally. Once you understand the causes of engine wear, you can understand the role of lubricants in reducing engine wear. At the same time, it is also clear that the use of anti-wear protection products is important to prolong the service life of the engine and maintain the engine.

Most of the wear and tear of the engine comes from cold starts. When the engine starts, the oil adheres to the metal surface through various lubrication methods, when the engine stops working, the oil film formed by viscosity will gradually fall off from the metal surface due to the action of gravity and become fragile, when the engine starts again, because the oil film on the metal surface has disappeared or is fragile, making the metal work in the absence of lubrication and cause serious wear. Therefore, the use of good lubricating oil becomes a top priority.

Kunlun Lubricating Oil's Tianrun series KR9-T 0W-40 SN fully synthetic high-performance engine oil is a good choice, which uses upgraded anti-wear and durability technology to provide anti-wear protection 59% higher than the standard limit, all-round protection of the engine, 65% higher than the standard limit of high temperature oxidation resistance, to ensure long-lasting and strong power.

The importance of the engine to the car is self-evident, slight wear will affect its normal operation, and heavy wear will lead to a shorter engine life. Therefore, for car maintenance, it is very important to take appropriate means to control the wear of the automobile engine, so to reduce the wear of the engine, the following problems need to be paid attention to: the selection of high-quality engine oil, when the engine is running, the metal surface inside the cylinder block runs at high speed in the environment of hundreds of degrees Celsius, rubs against each other, and inevitably brings the wear of the engine; This is especially true for trucks that run continuously for long periods of time and have heavy loads, which are more likely to cause wear and tear.

High-quality engine oil can effectively control the wear of the engine, not only that, but it can also effectively inhibit the generation of carbon deposits and sludge, so as to control the wear of impurities in the oil duct on the engine surface. Therefore, the owner must not be sloppy in the process of choosing engine oil, it is very important to choose a quality assured engine oil, Kunlun lubrication is a leader in domestic engine oil, and it is also a brand of PetroChina, and the quality is absolutely ***. At the same time, it is necessary to ensure that the water and oil are in a normal state, and if you want to make the engine wear less, you also need to pay attention to the status of the water and oil dashboard at all times.

Generally speaking, the water temperature should be controlled at about 80 degrees Celsius, and if the oil pressure gauge is displayed as 1 kg when the slow train is driving, and 4-5 kg when the fast train is driving, the oil pressure is normal. If some vehicles are installed with oil pressure lights, you should pay attention to whether the oil pressure lights are on at any time, and if they are on, they indicate that the state is not normal, and the driver needs to pay attention to it, and should immediately carry out car maintenance and repair, and develop good driving habits.

Hello, normal wear in general, no matter how good the lubricating oil is, it is impossible to be frictionless and zero wear, so more or less wear will occur.

2. The wear caused by abrasive friction is caused by the friction caused by the dust particles in the air entering the cylinder barrel and mixing with the lubricating oil, which is similar to the sand in our eyes. In order to reduce abrasive wear, it is recommended that car owners must choose a qualified air filter and clean it frequently.

3. Cold start wear, wear caused by dry friction of cold start of the engine, when the engine stops for more than 4 hours, most of the lubricating oil in the upper part of the engine has flowed back to the oil pan, and the lubricating oil is at the bottom when it starts again, at this time, the lubricating oil can not immediately flow to the various parts that need to be lubricated, that is, these few seconds, the engine does not stop running, and dry friction also occurs, and the engine wear caused by dry friction accounts for about 70% of the total wear. So choose a low-viscosity oil as much as possible, avoid choosing an oil that exceeds the manufacturer's viscosity requirements, and use some special anti-wear agents to reduce this amount of wear! Then there is the hot car in the morning for two minutes before driving.

4. Corrosion and wear, due to the unreliable quality of fuel, a large number of acidic substances are produced after its combustion to corrode the cylinder barrel and cause wear, so be sure to choose reliable gasoline!

In addition to the above, it is also important to reduce wear and tear:

1. Choose high-quality engine oil, change the oil regularly, and clean the lubrication system regularly.

2. The carbon deposits in the combustion chamber should be removed regularly, otherwise the carbon deposits themselves will also cause wear.

3. Avoid speeding and overloading, otherwise the wear and tear will be aggravated.

4. Be sure to avoid the water temperature being too high, check the lack of coolant frequently, pay close attention to the change of water temperature, and prevent the water temperature from exceeding the standard.

5. It is forbidden to slam the accelerator throttle, develop good driving habits to save money and cars!

How to reduce the wear and tear of the car engine, do this, and you win!

Use the vehicle reasonably, avoid speeding, overloading, maintenance, use qualified good engine oil, and often check the "oil quantity, and coolant".

Reduce usage. Ha ha.. Add high grade oil. Add fuel additives.

Regular maintenance with high quality lubricating oil.

Rational use of the car, regular maintenance.

When the car driver starts the car engine to work, the piston inside the engine will carry out high-speed reciprocating motion in the cylinder, and the cylinder is prone to more serious friction damage problems in the long run, and the actual friction wear will be based on the position of the piston in the cylinder and have more obvious differences.

Under normal circumstances, when the piston in the automobile engine is at the top dead center 8 ° to 12 ° position, the contact position between the first piston ring and the cylinder wall is the most serious part of friction and wear, and the maximum radial direction of wear can be reached in the whole overhaul mileage of the car, and the degree of wear will gradually increase from the bottom to the top.

There is also a kind of cylinder wear will show a "waist drum shape", which is in special circumstances, such as the unfiltered impurities in the oil inside the car randomly splashed on the surface of the cylinder wall, which will also cause friction and wear problems, forming a similar "waist drum" wear on the surface of the cylinder wall.

The main reason for the occurrence of the wear problem is that the impurities and metal chips in the engine oil will move at the maximum speed with the piston of the automobile engine in the middle of the cylinder, which will cause it to have the greatest effect on the grinding effect of the cylinder wall, and the middle part of the cylinder wall will have a more serious wear situation, and the degree of wear will be lower and lower from the middle to the top or down, which is also an important reason why there is almost no wear at the position where the upper and lower parts of the cylinder wall are not in contact with the piston ring.

In the automobile engine maintenance work, because the engine cylinder side has a high cooling efficiency, and the engine piston side pressure itself is larger, this will cause the longitudinal wear degree of the cylinder in the long-term motion will be lower than the transverse wear degree, and finally promote the engine cylinder wear will not appear in a perfect circle shape, but a kind of oval shape of wear.

The reasons for engine cylinder loss will vary with its use conditions, car type and car maintenance, and automobile maintenance personnel should take effective control and solution measures according to the actual situation to avoid the continuous aggravation of the problem of automobile engine wear.

While the car is moving, the engine cylinders will undergo normal wear and tear. The faster the engine runs, the more wear and tear the cylinders will be, so regular inspections and repairs should be done.

The law of wear is that the longer the car is used, the longer the time it runs at high speed, the more serious the wear and tear on the engine cylinder, and the utilization rate of the engine will decrease.

The law of cylinder wear is that the top is large and the bottom is small, and to some extent from large to small.

Hello, Engine wear characteristics are broadly divided into three stages. The first is the run-in wear stage of the new engine (or overhaul engine): during this period, due to the flatness of the surface of the newly mated parts, the mating surface wears quickly, which is generally called the run-in period wear; The second is the natural wear stage

After the running-in period of the parts, the wear rate slows down, the amount of wear is relatively stable, and maintains a uniform growth in the long term, this period is called the normal construction period, and the wear during this period is called natural wear; The third is the stage of collapse wear: after the natural wear of the parts grows to the wear limit point, due to the increase of the gap, the oil film can not be maintained, the lubrication conditions become worse, the impact begins to occur, the wear accelerates sharply, and the parts will soon lose their ability to work until they are damaged, which is called the repair interval or repair period of the matching parts, also known as the collapse wear period. [If you have a problem with the car, ask the car master.]

4S shop professional technician, 10 minutes to solve. 】

If there is mechanical movement, there will be friction, and if there is friction, it will definitely lead to wear, and 80% of the failure of mechanical parts is due to wear. Early wear is relatively easy to repair, and the grinder can dynamically self-heal the wear process into a repair process.

The friction pair of the engine will inevitably wear out, and the longer the mileage, the greater the wear.

For example, if a car runs 300,000, the engine power performance will decline, and other indicators will also decline, which is normal.

However, if the engine only drives a small mileage, such as during the warranty period, or tens of thousands of kilometers of oil, there is a decrease in power, burning oil, etc., that is, there is early wear.

The reasons for this are more complicated, such as poor maintenance, the use of inferior engine oil, etc.