How stuff works car engine




How a Car Engine Works


How a Car Engine Works

A car engine is a complex machine that converts the chemical energy of gasoline into mechanical energy that can be used to power the car. The basic components of a car engine are the cylinders, pistons, crankshaft, and valves.

Cylinders

The cylinders are the heart of the engine. They are where the combustion of gasoline takes place. The cylinders are made of metal and are lined with a thin layer of oil to reduce friction.

Pistons

The pistons are metal disks that move up and down inside the cylinders. The pistons are connected to the crankshaft by connecting rods.

Crankshaft

The crankshaft is a metal shaft that runs through the center of the engine. The crankshaft is connected to the pistons by connecting rods. The crankshaft converts the up-and-down motion of the pistons into a rotary motion.

Valves

The valves are metal plates that open and close to control the flow of air and fuel into and out of the cylinders. The valves are controlled by the camshaft.

Camshaft

The camshaft is a metal shaft that runs along the top of the engine. The camshaft is connected to the crankshaft by a timing belt or chain. The camshaft opens and closes the valves at the appropriate times.

How a Car Engine Works

When you start your car, the starter motor turns the crankshaft. The crankshaft turns the pistons, which move up and down inside the cylinders. The up-and-down motion of the pistons creates a vacuum in the cylinders, which draws air and fuel into the cylinders through the intake valves.

Once the air and fuel are in the cylinders, the spark plugs ignite the mixture. The combustion of the air and fuel creates pressure in the cylinders, which forces the pistons down. The down-stroke of the pistons turns the crankshaft, which in turn powers the car.

The exhaust valves open to allow the exhaust gases to escape from the cylinders. The exhaust gases are then expelled from the engine through the exhaust system.

Conclusion

A car engine is a complex machine that requires regular maintenance to keep it running properly. If you have any questions about how your car engine works, be sure to consult with a qualified mechanic.

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