Teach you how to scientifically run in a new car

The current new semi-trailer still needs to be run-in, how is it scientifically run-in? In response to this problem, experts from Liangshan Trailer Factory have something to say. First of all, it must be emphasized that although the manufacturing precision of modern semi-trailers has reached a high level, if you want your car to get the best working condition, the necessary running-in is still indispensable. Of course, the running-in suggestions of many old drivers are too cumbersome and difficult to operate. They are aimed at the old-fashioned semi-trailers whose manufacturing precision was particularly low in the past. For modern semi-trailers, especially joint ventures and imported trailers above the intermediate level, as long as you can grasp the following three It is enough to run in and drive the key parts in a targeted manner.

Powertrain: Controlling engine speed

In modern new cars, it is generally recommended to run a full 2,000 kilometers after purchase to calculate the end of the running-in. This is the basic mileage to ensure full contact, friction, adaptation and finalization of the parts. In general, the engine speed during the break-in period should be limited to between 1500 and 4000 rpm. However, both the vehicle speed and the engine speed during the break-in period are not harsh. Generally, drivers will have no problem as long as they follow their normal usage habits.

It is important to remind that after driving the car, most people are accustomed to letting the engine run at idle speed, and then drive the car away after the water temperature reaches the normal temperature, especially for new cars. In fact, if a modern EFI engine uses a long-term warm-up, it is not only unnecessary but also harmful. Shortening the warm-up time can prolong the service life of the three-way catalytic converter, and can also improve the conversion rate of pollutants in the exhaust gas and save fuel.

The correct way is to start the car after the engine is started and the engine returns to the normal idle speed. Before the water temperature rises, the speed of the car can be properly controlled.

Suspension system: avoid overloading

Running a new car with a full load will place an excessive burden on the suspension parts. Therefore, within the first 2000 kilometers, the load of the new car should not exceed 75% of the rated load, and the road surface with better quality should be selected as much as possible to avoid the load caused by excessive bumps on the body and suspension. New owners often pay attention to the break-in speed and ignore the requirement to limit the vehicle load during the break-in period. For example, the rated load of a car is 400 kg, and the running-in period cannot exceed 75% of the rated load, which is 300 kg. As long as 4 men in the car ride, it is likely to exceed this limit, but it is difficult for ordinary people to realize this. a little. Therefore, during the running-in process of the new car, please try to reduce the burden on the luggage, and for the requirements of your friends to hitch a ride, you should also weigh their weight in advance.

Braking system: Avoid emergency braking

Emergency braking not only impacts the running-in braking system, but also increases the impact load of the chassis and engine, so try to pre-brake as much as possible within the first 2,000 kilometers of driving, and do not use emergency braking. But as far as the running-in of the brake system is concerned, it only takes about 400 kilometers of driving. The running-in of the brake mainly includes the running-in of the brake pad and the brake disc, the brake pad and the brake hub, etc., which can be completed after driving about 400 kilometers.

In addition, experts recommend not to use the method of "leaving first and then braking" to break in the brakes.

Although this can relatively reduce the impact on the engine when braking, it can be dangerous, and it is even worse once you get used to it.