Four Stroke

Four Stroke The main format of engines used in cars today is the four stroke design. These types of engines are called four stroke because the piston must go in an up and down motion four times in order to create power to the wheels. The first stroke that the engine must go through is called the intake stroke. This stroke is when a valve opens up and the piston pulls the fuel air mixture into the cylinder. The next stroke is the compression stroke. This is when the piston is in an upward position… More information...

User:	Mark Gannarelli
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