Below what speed is it easy to produce carbon deposit?

The fundamental reason of engine carbon deposition is that the fuel and engine oil mixed into the cylinder are not fully burned, resulting in fine carbides, flocs and colloids. In the long run, if it is not discharged or cleaned in time, carbon deposition will occur. The generation of carbon deposit is directly related to the working condition of the engine, that is, the process of intake, fuel injection and combustion. Although it is not directly related to the vehicle speed, the ultimate goal of the engine operation is to make the car run, and the power generated by the engine will eventually be converted into speed through gear shifting, deceleration and other devices, so we can take speed as a simple and intuitive reference.

Besides idling and cold driving are more intuitive and easy to understand, what is the low speed of the car? How much is good? In fact, engine carbon deposition is inevitable. If there is little carbon deposit in the early stage, although it is not a fault, it will affect the performance and fuel consumption of the engine, but if the carbon deposit accumulates to a certain extent, it will affect the normal running of the vehicle.

In fact, there is no standard answer to this question, because the working conditions and tuning of each engine will be different. The automobile has the characteristics of universality and adaptability, so although the adjustment of the engine is different, there is still a "universal interval", that is, low-speed working conditions with low gear and high speed. According to experience, this speed should not be lower than 30km/h for a long time. If it is lower than this speed, the gearbox will often downshift, the speed will increase and the fuel injection will increase. The initial working condition of the engine is the one with the lowest thermal efficiency, and the intake saturation is also average, so this stage is the most fuel-consuming and easy to deposit carbon.

Carbon deposition is inevitable. What we need to do is to maintain the vehicle on time and normally, so as to avoid the vehicle running under the condition of easy carbon deposition for a long time, which can greatly slow down the formation of carbon deposition. As for the removal of carbon deposits by pulling the expressway, it will have a little effect, but for gasoline vehicles, it is not the main thing, but it is still based on prevention. In addition, the statement that pulling high-speed to remove carbon deposits does not mean that it is not easy to produce carbon deposits when running high-speed, so don't confuse it.