Compared with "slow start", which start mode is more harmful to the car? Why?

If gasoline is not fully burned in the combustion chamber, coke, carbide and nitride will be generated and attached to the valve surface, piston surface and spark plug. After a long period of accumulation, carbon deposits will form inside the engine. I didn't mention the problem of carbon deposition here. In fact, whether it is a car that slams on the accelerator or a car that drives slowly, there are drawbacks, and there will be different degrees of carbon deposition. Rapid acceleration is a kind of violent acceleration. We increase the depth and opening of the throttle. I didn't mention the problem of carbon deposition here. In fact, there are disadvantages in slamming on the accelerator and driving slowly, and there will be different degrees of carbon deposition, one of which is rapid acceleration or rapid acceleration. We increase the throttle depth, and the throttle opening increases.

The formation of engine carbon deposit is not sudden. Engine carbon deposition has a certain relationship with our daily driving habits. If we slow down, the engine speed will be at a low speed, and the gasoline will not burn enough when running at a low speed for a long time, which will easily turn the red light into a green light. When we start, we will shift gears first, then release the brakes, then start slowly with oil, then shift gears to accelerate, and then shift gears to drive normally. In the old driver's own words: "The car has been driving for a long time, and there is no original joy. Everything is natural. If we have to discuss which of the two starting methods is more harmful to the car, in fact, "slow start" is more likely to cause harm to the car. Many people often feel bad about the car when driving, feeling that the engine speed is only one.

Looking at the green light of countdown, I wish I could fly there. I guess everyone knows the urgency, especially in the last few seconds of the green light. The car in front is still very slow, and finally we have to wait for the next light. The initial fuel consumption is basically instantaneous fuel consumption, which is often higher than when you suddenly step on the accelerator and accelerate at a constant speed. After all, there is no driving inertia in the car at this time, and there is a lot of resistance to overcome when starting.