On the Problem of Automobile Throttle

1 has a throttle position sensor on the throttle to measure the opening and closing angle of the throttle. It tells the computer that the greater the throttle opening, the more air intake the engine will have, and the less it will have. This has nothing to do with the volume. 2 During the whole intake process when the engine is working, the throttle valve is always lower than atmospheric pressure. The greater the throttle opening, the more combustible mixture with the so-called optimal air-fuel ratio will enter within a specified time, that is to say, the smaller the vacuum is, the closer it is to atmospheric pressure, and the air-fuel ratio has nothing to do with it (but the throttle opening is not proportional to the intake volume of combustible mixture, which is also the purpose of turbocharging).