ESTEEM Center for Equity in Science, Technology, Engineering, English & Math



How a 4 Stroke Engine works

The 4 steps that a four stroke engine goes through to work.

A four Stroke engine is a common type of internal combustion engine, being used in lots of cars, motorcycles, and tools. a four stroke engine has four steps it goes through to make it work. The 4 steps are the intake stroke, the compression stroke, the power stroke, and the exhaust stroke.

Step 1: the Intake Stroke

During the intake stroke, the intake chamber is opened, and the air and fuel mixture enter the engines combustion chamber. how it does this is by the piston moving down from the top dead center (also called the TDC) to the bottom dead center (Also called the BDC). doing this increases the volume in the chamber, allowing the air and fuel mixture to enter the combustion chamber.

Step 2: The Compression Stroke

On the compression stroke, the intake chamber is closed, and the piston moves from the bottom dead center back to the top dead center. this compresses the air and fuel mixture. At the end of this stroke, a sparkplug ignites the air and fuel mixture.

Step 3: The Power Stroke

the power from the ignition of the fuel and air mixture forces the piston down, creating the power output.

Step 4: The Exhaust Stroke

As the piston reaches the bottom, the exhaust valve opens, and releases the remaining gas is released, and the cycle repeats over and over, until the engine is turned off.

RELATED STORIES:—The-Four-Stroke-Gasoline-Process


More to Discover