Now let's look at all the parts that work together to make this happen, starting with the cylinders. The rotational motion is nice because we plan to turn (rotate) the car's wheels with it anyway. In an engine, the linear motion of the pistons is converted into rotational motion by the crankshaft. Now the engine is ready for the next cycle, so it intakes another charge of air and gas. Once the piston hits the bottom of its stroke, the exhaust valve opens and the exhaust leaves the cylinder to go out the tailpipe.The gasoline charge in the cylinder explodes, driving the piston down. ![]()
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