Once I put my key in the ignition and turn the car on what are the sequence of events that take place?

Question

Once I put my key in the ignition and turn the car on what are the sequence of events that take place?

In: 753

Answer 1

The starter motor is engaged and it spins the crankshaft of the engine. Simultaneously, the ignition is set to ‘on’ which allows the ignition coils to be powered by the battery. As the crankshaft turns it articulates the pistons which start getting fed fuel / air mixture from an electronically controlled injector (most modern cars) or a carb. Once the cylinders fire they create enough power to maintain idle and the starter motor is turned off.