Article
Article
Mean effective pressure
Article By:
Baumeister, Theodore Formerly, Department of Mechanical Engineering, Columbia University, New York, New York; Editor in Chief, "Standard Handbook for Mechanical Engineers"
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.411000
A term commonly used in the evaluation for positive-displacement machinery performance which expresses the average net pressure difference in pounds per square inch (lb/in.2 or psi) on the two sides of the piston in engines, pumps, and compressors. It is also known as mean pressure and is abbreviated mep or mp.
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