What is the name of the cylinder with two screws under the accelerator of BYD l3?

BYD l3 throttle has two cylinders, the bottom of which is fixed with screws, which is called throttle position sensor.

Throttle position sensor, also known as throttle opening sensor or throttle switch, is a device for detecting engine state.

The functioning throttle position sensor is also called throttle opening sensor or throttle switch. Its main function is to detect whether the engine is in idle or load condition, acceleration or deceleration condition.