Look at the picture. What's the name of this throttle controller?

Throttle opening is controlled by throttle cable of petrochemical vehicle. When the throttle opening becomes larger, the air flow into the cylinder increases. When the carburetor is driven by air flow, the fuel supply increases and the engine speed increases. Otherwise, the engine speed will be reduced.

The EFI vehicle is also a controlled throttle. Weigh the throttle body. There is a sensor next to the throttle, called the throttle position sensor. He can transmit the throttle opening signal to the driving computer in the form of voltage. According to this signal and other signals, the computer is driven to calculate the fuel injection quantity. Control the fuel injection quantity of the fuel injector. Like carburetor, the throttle opening is large and the fuel injection calculated by computer is also large. The engine speed will increase.

Can you understand this?