How an Engine Works

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Here's how an engine works to power your car.

In this video, a 1ZZ-FE engine from a Toyota Corolla is taken apart to show what is inside and how it works. It first starts with an overview of major engine components, how it works, then goes into the disassembly of the engine, followed by a detailed breakdown of the individual components themselves.

The internal combustion engine makes power from the explosion of gasoline in a cylinder. The piston in the cylinder will slide down, pushing a connecting rod around the crankshaft (crank-slider mechanism) which creates a rotational torque. That torque is sent to the transmission before going to the wheels.

At the top of the engine are valves that control the inlet and outlet of air, fuel, spark and exhaust. The valves are controlled by camshafts, which are linked to the crankshaft through a timing chain. This will keep the timing between the valves and piston in the combustion chamber consistent for efficient burning of the 4 stroke engine.