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Ignition Coil

Ignition Coil provides the engine spark plug with the necessary current to ignite the spark plug by converting the low voltage into hefty current needed by the engine. 

 

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Ignition Coil otherwise known as spark coils is induction coil that is found in automobile’s ignition system that transforms the low voltage of the battery into thousand voltage that are needed for creating electric sparks in spark plugs to ignite the fuel. An engine spark plug needs a current of 25,000 volts approximately and the ignition coil helps in stepping up of the low voltage received from the car battery. Some of the coils come with internal resistor whereas others depend on external resistor or resistor wire to regulate the current flowing from car’s supply of 12 volt to the coil.  The wire which connects ignition coil with the distributor as well as high voltage wires that connect distributor to spark plug is known as high tension leads or spark plug wires. All the ignition coil requires mechanical breakers points as well as capacitor. Recently, electronic ignition system uses power transistor to provide ignition coil with pulses. Contemporary passenger vehicle might come with an ignition coil for every cylinder or for cylinder pair which eliminates the spark plug cables that are fault prone as well as distributor in routing high voltage pulses. However, a diesel engine does not require ignition coil as it relies on compression for igniting the air mixture/fuel.

 

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