What is the car break in period and what does the car break in period mean?

For the car run-in period, it generally refers to the car from the time the store is proposed. After the new car leaves the factory, the parts work is not smooth enough, and if it does not go through a period of running-in, the wear and tear of the car will be intensified.

The car run-in period, also known as the "walking period", refers to the initial operation stage of the new car or the ruler only after the overhaul, generally 1000 to 1500 kilometers, which is the basic mileage to ensure that the parts are fully contacted, rubbed, adapted and finalized. The following is a relevant introduction to the characteristics of the run-in period of the car: 1. The parts wear out quickly.

Although the car has been run-in according to the regulations, the surface of the parts is still rough, and there are more metal particles falling off between the new parts, which aggravates the wear. 2. It is easy to get out of the old friend obstacle. Due to the deviation of the parts in the processing and assembly, and also contains some hidden dangers that are difficult to find, it is very likely that the parts will be stuck, heated and leaked during the closing period.

3. Lubricating oil is easy to deteriorate. Due to the small fitting gap of the parts during the walking period, the quality of the oil film is poor, the temperature rise is large, and the oil is easy to oxidize and deteriorate. In addition, more metal particles are mixed into the engine oil, which reduces the quality of the engine oil.

4. High fuel consumption. In order to ensure the operation of small load during the closing period, the carburetor is installed with a speed limiting plate, which causes the mixture to be too thick. At the same time, the large friction resistance between the parts also increases the fuel consumption.

5. Fasteners are easy to loosen. In view of the occurrence of the above situation, attention should be paid to the following during the closing period: load limit, speed limit, selection of high-quality lubricating oil, and start-up"Cold shake and slow turn, low speed heating""Start slowly, refuel slowly, shift gears at the right time, brake slowly, strictly control the water temperature, and frequently check the temperature of the transmission, drive axle and wheel hub. "

The run-in of new cars may not be new to ordinary people who are cautious, especially in the early days, due to backward technology, the assembly needs to have a run-in period after leaving the factory. However, modern automobile manufacturing technology is very advanced, the processing accuracy of parts and components is also very high, and the car has been cold running-in before leaving the factory, so the new car does not need a long run-in cycle, and it can work at full load after running thousands of kilometers at low speed, and be familiar with the condition of the vehicle.

Some car owners may not know that the newly produced car has been run in the code base before leaving the factory according to the regulations, but the surface of the parts is still relatively rough, so the friction resistance is still very large, and it is not suitable for overload load, otherwise it will accelerate the new wear. At the same time, the newly manufactured automobile parts have a small gap, and the oil film quality and lubrication effect are poor, which is very easy to produce friction heat and large temperature rise, which further affects the lubrication of the engine oil and easily leads to various faults in the vehicle. Therefore, the newly bought car must be run-in when it is used.

Generally, in the running-in stage, in addition to the running-in of people and vehicles, the main thing is the run-in of the engine, mainly including the running-in between the piston and the cylinder liner, the connecting rod and the bearing. The run-in period of the engine is about 1000 km, and the gearbox is mainly the run-in between the gears. Generally speaking, the run-in mileage of the car is mostly between 1500 and 3000 km.

Generally speaking, the run-in period is divided into three phases. The initial run-in period is about 1000 km, the intermediate run-in period is about 2000 km, and the oxide film is about 3000 km. At this point, the run-in is complete.

In order to embody the beauty of its driving.

The speed limit of new cars during the run-in period is generally 40-70 kilometers per hour for domestic cars and 100 kilometers per hour for imported cars. When the throttle is fully open, the speed should not exceed 80% of the maximum speed, and pay attention to the engine tachometer and speedometer to ensure medium speed. Generally speaking, during the run-in period, the engine speed should be 2000-4000 rpm.

What's more, try not to run long distances during the run-in period of the new car, the continuous working time of the engine will increase, which can easily lead to wear and tear of parts.