What is a benefit of increasing an engine's volumetric efficiency?

Increasing an engine's volumetric efficiency allows for a greater volume of air and fuel mixture to enter the combustion chamber during each cycle of the engine. This results in a more efficient combustion process, which in turn enhances both power output and fuel economy.

When more air and fuel are mixed and combusted effectively, the engine produces more power without requiring an increase in fuel consumption. Therefore, the engine can achieve higher performance levels while using fuel more efficiently. This relationship is critical for optimizing engine performance and meeting fuel economy standards, making improved fuel economy and power output a significant advantage of enhanced volumetric efficiency.