What Speed is Displayed on the Car Speedometer?

[LeBenjamin]

Instantaneous speed. Here is the relevant introduction: Instantaneous speed: The speed of a moving object at a certain moment or position is called instantaneous speed; the speed displayed on the car speedometer changes continuously over time and represents the speed at each moment, hence it is instantaneous speed. Car speed sensor: As the information source of the car's electronic control system, the car speed sensor is a key component of the car's electronic control system and one of the core research areas in automotive electronic technology. It detects the speed of the electronically controlled car, and the control computer uses this input signal to control engine idle speed, torque converter lock-up in automatic transmissions, automatic transmission shifting, engine cooling fan operation, cruise control, and other functions.