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An ignition coil is used in the ignition system of a spark-ignition engine to transform the battery voltage to the much higher voltages required to operate the spark plug. The spark plugs then use this burst of high-voltage electricity to ignite the air-fuel mixture.
The ignition coil is constructed of two sets of coils wound around an iron core. Older engines often use a single ignition coil which has its output directed to each cylinder by a distributor, a design which is still used by various small engines (such as lawnmower engines). Modern car engines often use a distributorless system (such as coil-on-plug), whereby every cylinder has its own ignition coil.
A distributor is an electric and mechanical device used in the ignition system of older spark ignition engines. The distributor's main function is to route electricity from the ignition coil to each spark plug at the correct time.
“Mechanical component shows wear and tear” this theory wakes up an engineer’s mind and forces him to innovate more to achieve an ideal system, Since the moving mechanical components cause wear and tear which we count as a limitation of the component, the questions arise, Can we avoid the use of distributor in an ignition system? If yes, then how can we manage the timing of the spark in multiple-cylinder engines? Let’s just find out.
Distributorless Ignition System (DIS)
DIS is the ignition system in which the distributor of the electronic ignition system is replaced with the number of induction coils i.e. one coil per cylinder or one coil for pair of cylinders, and the timing of the spark is controlled by an Ignition control unit (ICU) and the Engine control unit (ECU), which makes this system more efficient and accurate.
Due to the use of multiple ignition coils that provide direct voltage to the spark plugs. this system is also known as Direct Ignition System (DIS).
To know more about ignition system just watch the video till the end. Thanks
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