Reluctor

A reluctor is a component in an ignition system used to trigger the spark plug. It is typically a rotating toothed wheel that is mounted on the crankshaft or camshaft. As the engine rotates, the teeth of the reluctor wheel pass by a magnetic pickup sensor. This passing of teeth creates a change in the magnetic field, which is detected by the sensor. The sensor then sends an electrical pulse to the ignition module. This pulse signals the ignition module to fire the spark plug at the precise moment needed for optimal combustion. The number of teeth on the reluctor wheel and their spacing are critical for determining ignition timing. Modern engines often use Hall effect sensors or optical sensors in conjunction with reluctor rings, which can provide more precise triggering signals and allow for more sophisticated ignition timing control. The reluctor's function is essential for engine performance and efficiency, ensuring that each cylinder receives a spark at the correct time in its combustion cycle.