The car will refuel automatically if it doesn't step on the accelerator, up and down. What is the reason?

If you don't step on the accelerator, just put down the handbrake, and the car will move out of inertia. If the valve automatically refuels after the cold car starts, the engine will automatically increase the idle speed in the normal cold car state, so that the combustion temperature will rise rapidly, and the oil temperature and coolant temperature will rise rapidly, thus optimizing the lubrication conditions.

Security risks:

After flameout, the direction and braking force disappear, which is difficult to control; The operation process is difficult. In the process of slowing down and stopping at the side of the road, you must turn on the right turn signal to remind the vehicles behind you, slow down slowly until you stop at the side of the road smoothly, and put up warning signs to avoid the occurrence of secondary accidents.