How is the throttle of the car controlled? The throttle is actually a valve.

When driving, we need to step on the accelerator pedal, also known as the accelerator pedal, in order to make the car accelerate. Although this pedal is commonly known as the accelerator pedal, it actually does not directly control the fuel injection quantity, but controls the intake air quantity, which is equivalent to a "throttle". Throttle refers to the position diagram on the engine. When we step on the accelerator pedal, we will open a valve called "throttle" wider, so as to let more air into the engine. The computer will determine the amount of fuel injected into the engine according to the amount of air inhaled and the ideal mass ratio of fuel to air (gasoline: air = 1: 14.7, that is, 1 g gasoline demand 14.7 g air). In this way, the more air is inhaled, the more fuel is injected. When the air volume and fuel volume increase, the explosion in the combustion chamber will be more violent and produce more powerful force. Under the action of greater force, the piston of the engine will push the crankshaft to rotate faster or output greater torque, which will make the wheels of the car rotate faster, thus speeding up the driving speed. The throttle valve is located between the intake pipe and the intake manifold and is responsible for controlling the intake air volume. When we step on the accelerator pedal, the intake valve will open to let more air in, and the computer of the engine will give instructions to spray more oil to speed up the car.