Funcionamiento motor de Combustión Interna

Introduction to Internal Combustion Engines

Overview of Internal Combustion Engines

• Internal combustion engines convert energy from combustion into mechanical energy.

• The most commonly used types are 2-stroke and 4-stroke gasoline engines.

• Key components of a 4-stroke engine include the cylinder with piston, valve assembly, and crankshaft system.

Stages of the 4-Stroke Engine Cycle

Admission Phase

• The first phase is called admission; as the piston descends due to crankshaft rotation, it creates suction through the open intake valve.

• A mixture of gasoline and air enters from the carburetor during this phase.

Compression Phase

• Following admission, the compression phase occurs when the piston ascends with closed valves.

• This action compresses the previously admitted fuel-air mixture.

Explosion and Expansion Phase

• The third phase involves explosion and expansion; a spark ignites the compressed mixture via an electrode in a spark plug.