__________ __________ is determined by the ratio of air drawn into the cylinder compared to the maximum air that could enter the cylinder.

Volumetric Efficiency

The ratio of air drawn into a cylinder compared to the maximum air that could enter the cylinder. Most gas engines are about 80 to 90 percent volumetrically efficient.

Air Drawn

The process of pulling air into a system, such as an engine or ventilation system, from the surroundings.

Cylinder

A fundamental part of an engine's block that houses the pistons, where fuel combustion occurs to generate power.