Certain Engine is a term used to describe a type of engine that is designed for specific purposes. The most common types of Certain Engines are Turbo, Hemi, DIESEL, and Fanet. Turbo engines use a turbine to compress air and increase the power output of the engine. Hemi engines are characterized by their hemispherical combustion chambers, which allow for more efficient combustion. DIESEL engines use compression ignition to generate power, making them more fuel-efficient than gasoline engines. Finally, Fanet engines are a type of internal combustion engine that uses a fan to draw in air and fuel, creating a more efficient combustion process.