Here's how a two-wheeler magneto works:
1. Mechanical Setup: The magneto is mechanically coupled to the engine's crankshaft through a gear or chain drive. As the engine rotates, it causes the magneto's rotor to spin.
2. Rotor and Stator: The magneto consists of a rotating component called the rotor and a stationary component called the stator. The rotor is made up of a coil of wire wrapped around a laminated iron core, while the stator is made up of multiple coils of wire arranged around the rotor.
3. Magnetic Field Generation: As the rotor spins, it generates a rotating magnetic field due to the flow of electric current in the coil of wire. This rotating magnetic field induces an electromotive force (EMF) in the stator coils.
4. EMF Induction: As the rotor spins, it cuts through the magnetic field generated by the stator coils, causing an electromotive force to be induced in the stator coils. The EMF generated is an alternating current (AC), meaning it periodically reverses direction.
5. Rectification: The alternating current generated by the magneto needs to be converted into direct current (DC) to be used for ignition purposes. This is done using a rectifier, which consists of diodes that allow current to flow in only one direction. The rectifier rectifies the AC output of the magneto into a pulsating DC output.
6. Spark Plug Ignition: The rectified DC current generated by the magneto is then supplied to the spark plug. When the spark plug receives sufficient voltage, it creates an electrical spark that ignites the air-fuel mixture in the engine's cylinder.
In summary, a two-wheeler magneto works by converting the mechanical energy of the engine's rotating crankshaft into electrical energy through electromagnetic induction. It generates an alternating current that is then rectified into direct current, which is used to power the spark plug and ignite the air-fuel mixture in the engine.
