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

When driving, you must step on the accelerator pedal, also known as the accelerator pedal. If you step on the accelerator, the car will accelerate. Although commonly known as the accelerator pedal, it does not directly control the fuel injection quantity, but controls the intake air quantity, which is equivalent to a "throttle". Schematic diagram of the position of throttle valve on the engine When the accelerator pedal is pressed, a valve called "throttle valve" will open wider, thus allowing more air to enter the engine. The computer can 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 will push the crankshaft to rotate faster or output greater torque, which will make the wheels of the car rotate faster, so that the car will accelerate. This is the throttle on the engine. It is located between the intake pipe and the intake manifold and is responsible for controlling the intake air volume. When stepping on the accelerator pedal, directly open the intake valve to let more air in, so that the engine computer can give instructions to spray more oil and the car will accelerate.