How an Engine Works
There was a time where only a few people understood how a car really works. Over time, schools have been educating pupils; and companies have showed the public how their specific model works. So how does an engine work? It starts with the key in the ignition. Turning the key allows an electrical current to flow through the engine which ignites the spark plugs. A spark plug is present in all of the cylinders. It ignites with the help of a timer that is set to a sequence. The sequence usually allows spark plug one and three to ignite simultaneously and spark plug two and four to ignite afterwards. The throttle opens the valve within the first cylinder allowing petrol to flow into the space. Once the valve is closed and the piston gets pushed down to BDC or Bottom Dead Centre, the piston compresses the petrol. Once the petrol has been compressed to capacity the spark plug ignites the gas forcing the piston to go down once again. Then the second valve opens where the piston will once a