A actuator (also actuator (called) is a technical component that is a converts an electrical signal into a physical movement or effect .
🧩 Definition:
An actuator is the counterpart to a sensor.
While a sensor provides information recorded (e.g. temperature, speed), leads An actuator performs an action – it moves, controls, opens, closes, regulates or creates something in the real world.
⚙️ How does an actuator work?
-
Input : Signal from the control unit (e.g., engine control unit / ECU)
-
Conversion : Electronics and mechanics convert the signal.
-
Output : Mechanical movement, pressure, heat, light, etc.
🛠 Examples of actuators in cars:
| actuator |
Effect |
| Ignition coil |
Converts electricity into high voltage → ignition spark |
| Throttle positioner
|
Opens/Closes throttle valve (air supply) |
| Fuel injector
|
Injects fuel |
| EGR valve
|
Controls exhaust gas recirculation |
| Door lock actuator
|
Opens/Closes Doors |
| Headlight motor
|
Tilts/adjusts headlights |
