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Engine

Auto Systems and Repair

The engine is a mechanical device designed to convert chemical energy (fuel) into kinetic energy (motion), which powers your vehicle. 

Almost all vehicles (including hybrids) use internal combustion engines that burn fuel. In an internal combustion engine, air and fuel are ignited inside a cylinder and the pressure that is created forces pistons to move up and down. This rotates the crankshaft, which delivers power to the wheels via the drivetrain.


Piston
A piston is a cylindrical piece of metal that moves up and down inside each cylinder, compressing the air-fuel mixture and capturing the force created by the combustion process. This force is then transferred to the crankshaft, via the connecting rod. More >>


Crankshaft
The crankshaft is a long, steel shaft that transfers the up-and-down motion of the pistons and connecting rods into rotational motion. More >>


Related Systems

Ignition System

The ignition system supplies the "spark" to each cylinder, which is necessary to begin the combustion process. More >>


Fuel System

The fuel system provides the fuel necessary for the engine to operate. More >>


Engine Cooling System

The cooling system helps regulate the amount of heat in the engine. If it’s too hot, the engine can overheat. If it’s too cold, the engine emits more pollutants and engine components prematurely wear out. More >>


Additional Key Parts

Air filter, Coolant, Engine block, Engine oil, Fuel pump, Head gasket, Radiator, Spark plug, Timing belt, Water pump


 

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