Step on the accelerator after the car is turned off, will it step on the gasoline in the cylinder?

Everyone should know the structure of this engine. The intake of the engine is controlled by two channels. One is the throttle body, that is, the middle diaphragm you see is driven by an external throttle cable or stepping motor, and the other channel bypasses the valve. There is a round hole in the throttle body, which can be seen if you look inside carefully. The throttle body is opened and closed by diaphragm rotation, while the bypass valve is opened and closed by idle stepping motor. In fact, like the throttle body, the opening of the channel is controlled by how much it rotates, which is not as simple and complicated as everyone thinks.

But this circular passage is very small, and the air inlet is very small. As long as the engine is started and the accelerator is not stepped on, the engine belongs to the idle running stage, the idle power-saving throttle body is completely closed, no air intake is allowed, and the air intake only enters through the bypass valve. At this time, the intake air is very small, and the torque generated by the intake air is just enough for idling condition, that is, it can just keep the engine running without stalling, but the speed is not high. This is done to save fuel. Once you step on the accelerator, the diaphragm of the throttle body will rotate, and then open and enter a lot of air. At this time, the bypass valve also opens the auxiliary air intake, which is the simple air intake structure of the engine.

In addition, the intake air of the bypass valve does not pass through the throttle channel. The bypass valve is a hole dug from the throttle body in front of the throttle diaphragm, and then passes from the throttle side to the rear side of the throttle diaphragm through a cast channel. However, there is a valve in the middle of this passage which is the same as the throttle diaphragm. The valve is controlled by a stepper motor with idle speed control. The opening and closing of throttle diaphragm has nothing to do with this valve. It doesn't mean that it all starts when you step on it.

Therefore, it is correct that the throttle diaphragm is completely closed without stepping on the accelerator. No gas can enter the intake manifold through the diaphragm, but some gas can enter the intake manifold through the bypass valve. If the engine is turned off and the throttle is pressed to the end, the throttle is not controlled by mechanical means, but by electronic signals. If the engine is turned off, the throttle control program of the driving computer will not work, even if you step on the throttle. It is equivalent to that the throttle stroke has nothing to do with the throttle, so some novice drivers don't have to be afraid to step on the throttle.

Cars are not made of paper, so they don't break down so easily. The engine is controlled by the on-board computer when idling. If you want to ignite successfully, you must have oil to ignite, right? When you turn the key, you start to supply oil. If you listen carefully, you will hear the sound of the oil pump pumping oil. When you want to start, put in gear and step on the accelerator, and the scooter will leave. As long as the car is turned off, it doesn't matter if you step on it, but you must make sure that the car is turned off and see if it is neutral and the handbrake is pulled. It's safe, not a trivial matter. Everyone must understand.