How Does A Magneto Work?


4 Answers

Anonymous Profile
Anonymous answered
Well it works by spark plug
sherlin smith Profile
sherlin smith answered

The magneto is the white block in the following photo (this is the magneto for a chain saw):

The idea behind a magneto is simple. It is basically an electrical generator that has been tuned to create a periodic high-voltage pulse rather than continuous current. An electrical generator (or a magneto) is the reverse of an electromagnet (see How Electromagnets Work for details). In an electromagnet there is a coil of wire around an iron bar (the armature). When you apply current to the electromagnet's coil (e.g. With a battery), the coil creates a magnetic field in the armature. In a generator, you reverse the process. You move a magnet past the armature to create electric current in the coil.

A magneto consists of five parts:

  • An armature. In the above magneto, the armature is shaped like a capital "U". The two ends of the U point toward the flywheel.
  • A primary coil of perhaps 200 turns of thick wire wrapped around one leg of the U
  • A secondary coil of perhaps 20,000 turns of very thin wire wrapped around the primary coil
  • A simple electronic control unit that commonly goes by the name "electronic ignition" (or a set of breaker points and a capacitor)
  • A pair of strong permanent magnets embedded in the engine's flywheel.

Anonymous Profile
Anonymous answered
A simple explanation is that it is the opposite of an electromagnet. With an electromagnet, current is fed into a coil of wire surrounding an armature, e.g. An iron bar, making the iron bar a magnet.
With a magneto, a permanent magnet passes a coil of wire causing current to form in the wire which after some other steps, can power an ignition in an engine.
Muddassar Memon Profile
Muddassar Memon answered
A magneto offers pulses of electrical power to the spark plugs in several gasoline-powered inner combustion engines where batteries are not present, mainly in 2-stroke and 4-stroke engines which are usually used for motorcycles, chainsaws etc. At times they are even applied in small aircrafts or tractors. Generally in aircrafts, every cylinder has two separate spark plugs connected to it, each of which is driven by a particular magneto. This setting offers redundancy, if one of the magnetos fails to work. Magnetos merge the functions of a dynamo and a contact breaker points and loop them into a particular unit.

The engine spins a coil of wire amid the poles of a permanent magnet to supply a fundamental source of electrical energy. Seeing that the magneto is a self-contained incorporated ignition unit creating its own electrical power generation, an automobile which has additional electrical material also needs other means to generate electrical power for that equipment.
thanked the writer.
Anonymous commented
Bad description google the question to find out this description gets off track two words in
Anonymous commented
Very bad description off track in one sentence!

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