A naturally aspirated engine, also called a normally aspirated engine (or NA engine in short), is a piston combustion engine that converts thermal energy into mechanical work. Thermal energy is obtained in the engine by converting fuel into heat through combustion.

When fuel is burned, the temperature and pressure in the engine increase. The increased pressure of the working substance acts on the pistons of the engine, which transform this energy into mechanical work.

Every car driver knows turbocharged and non-supercharged engines. Car enthusiasts sometimes disagree and debate which of these engines is better.

This article is a continuation of the series about engines. In it, we will briefly examine the function, advantages, and disadvantages of turbocharged and naturally aspirated engines.