volumetric efficiency


noun
  1. the ratio of fluid delivered by a piston or ram pump per stroke to the displacement volume of the piston or ram

  2. the ratio of air or gas-air mixture drawn into the cylinder of an internal-combustion engine to the volumetric displacement of the piston

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How to use volumetric efficiency in a sentence

  • The valves and valve springs are especially accessible and of such size as to permit high volumetric efficiency.

    Aviation Engines | Victor Wilfred Pag