Can high-speed running really remove carbon deposits? Experiments by old drivers show that the newly generated carbon deposits are more than those removed.

Xiao Ceng will tell you Xiao Ceng's personal opinion first: cleaning up the carbon deposits on the expressway is a joke, just like running with your mouth open can remove dental stains. Dental calculus should not be brushed off with a toothbrush. Can carbon deposit blow away the fast-moving air?

Let's go back to the topic that high-speed running can remove carbon deposits. Many old drivers say that running at high speed can remove carbon from the engine for the following reasons.

First,? When the engine is running at high speed, the air intake is large, which can wash away the carbon deposits on the engine air intake. It is out of the question. The engine air filter is like a wall, filtering air, so it is impossible for air to directly rush into the carbon deposit in the airway. The air intake of the engine is determined by the running computer of the engine. Your engine speed determines the air intake of the engine. When we are cruising at high speed, the engine speed is about 1800-2500 rpm. At this time, there is no difference between the air intake of the engine and driving at this speed in our urban area, so it can be said that it has little effect on the engine to remove carbon deposits.

Second,? When driving at high speed, deliberately increasing the speed to remove carbon deposits, such as keeping the engine running for three or four thousand revolutions, will still have a little effect on removing carbon deposits. However, if you want to keep the engine running at a high speed for a period of time, you must not suddenly accelerate and then decelerate, because the engine needs to use open-loop control to improve the power of the engine when it is accelerating rapidly and stepping on the accelerator with big feet. At this time, the air-fuel ratio is in the rich control state, and the combustion is relatively insufficient, especially. However, carbon deposition itself is stubborn. Even if the engine runs at a high speed for a long time, the carbon removal is very limited, because the effect of hanging bottles to clean up the carbon deposit at the air inlet is not necessarily good. The best effect is to disassemble it and clean it with special tools.

Third,? Then why do many people think that after running the expressway, the car becomes much lighter? Can high-speed running really remove carbon deposits?

Of course not. On the one hand, it is psychological. Just getting off the boring highway and going to the complicated roads in the city will make you feel excited.

On the other hand, the engine and automatic gearbox will have learning function, which will constantly correct the logic of fuel injection and air intake, but this logic is repeated cycle by cycle, so the car just comes down from high speed and still executes according to the logic of high speed. Therefore, even if you lightly step on the accelerator, the engine will greatly increase the fuel injection and air intake, making you feel that the car is very energetic. After driving for a while, the engine and gearbox will enter the next learning cycle.

Therefore, high-speed running is not helpful to remove carbon deposits, and if the S block is used improperly, it will increase the production of carbon deposits. If you really want to remove carbon deposits, the role of high-speed running can be ignored, but it can reduce the production of carbon deposits. If you want to remove carbon deposits, it is better to add fuel treasure.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.