Charge Efficiency

The ratio of the weight of the charge actually taken in to the weight of the air at standard conditions corresponding to the piston displacement.

Charge Efficiency
Naturally aspirated 4-stroke diesel0.83 - 0.86
2-stroke diesel0.8 - 0.95
2-stroke diesel, nominal charge efficiency0.6 - 0.8


"Diesel Engine Engineering: Thermodynamics, Dynamics, Design, and Control", Andrei Makartchouk

See also: Air Intake Manifold.

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Subjects: Engines