What is high voltage ignition system?
Ignition system, in a gasoline engine, means employed for producing an electric spark to ignite the fuel–air mixture; the burning of this mixture in the cylinders produces the motive force. The distributor routes the successive bursts of high-voltage current to each spark plug in the firing order.
What are the four different types of ignition system?
Currently, we recognize four types of ignition systems used in most cars and trucks: conventional breaker-point ignitions, high energy (electronic) ignitions, distributor-less (waste spark) ignition and coil-on-plug ignitions.
How is high voltage generated in a magneto ignition system?
As current flows through the coil windings, it generates its own magnetic field that surrounds the coil windings. At the correct time, this current flow is stopped and the magnetic field collapses across a second set of windings in the coil and a high-voltage is generated.
How many volts does an aircraft Magneto generate?
A standard light aircraft magneto with a current interrupter installed is able to generate 240 V on the primary coil with 180 windings which is then stepped up all the way to 24 000 V using a transformer with 18 000 windings on the secondary coil.
Can a compact magneto be used in a light aircraft?
A typical primary coil has 180 turns which would require that the secondary coil be made up of over 100 000 turns. This is not practical for a compact magneto to be installed in a light aircraft. Therefore, a means to increase the voltage at the primary coil before the transformer steps up the voltage is necessary.
How does a step up transformer work in a magneto ignition system?
A step-up transformer then increases the voltage at the primary coil to a value large enough to induce a spark at the spark plugs. It is easiest to demonstrate the principle of magneto operation by simplifying the magneto to a single magnet rotating around a soft iron coil core.