Ignite the Air-Fuel Mixture

Automotive engines are considered four-stroke engines (intake, compression, power, and exhaust). To get to the stroke that is wanted, the power stroke (the one which gives the vehicle power to move), the engine must cycle through the other necessary strokes. Most automotive engines have four to eight pistons working together to provide the mechanical energy. Not only does the ignition system have to ignite the air-fuel mixture, it also needs to ignite it at the correct time.