average pressure

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• Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …   Wikipedia

• pressure — pressureless, adj. /presh euhr/, n., v., pressured, pressuring. n. 1. the exertion of force upon a surface by an object, fluid, etc., in contact with it: the pressure of earth against a wall. 2. Physics. force per unit area. Symbol: P Cf. stress… …   Universalium

• Mean effective pressure — The mean effective pressure is a quantity related to the operation of an reciprocating engine and is a valuable measure of an engine s capacity to do work that is independent of engine displacement[1]. When quoted as an indicated mean effective… …   Wikipedia

• mean effective pressure: (MEP) — The average pressure of the burning fuel on the power stroke subtracted by the average pressure on the other three strokes. Pressure is in pounds per square inch. Average pressure on a surface when a changing pressure condition exists. Also see… …   Dictionary of automotive terms

• Acoustic radiation pressure — is the difference between the average pressure at a surface moving with the sound displacements (the Lagrangian pressure) and the pressure that would have existed in the fluid of same mean density at rest. See also * Radiation pressure * Acoustic …   Wikipedia

• instantaneous sound pressure — noun the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point • Syn: ↑sound pressure • Hypernyms: ↑pressure, ↑pressure level, ↑force per unit area * * * Physics. See sound pressure ( …   Useful english dictionary

• sound pressure — noun the difference between the instantaneous pressure at a point in a sound field and the average pressure at that point • Syn: ↑instantaneous sound pressure • Hypernyms: ↑pressure, ↑pressure level, ↑force per unit area …   Useful english dictionary

• indicated mean effective pressure — The average pressure produced in the combustion chamber during the operating cycle. It is an expression of the theoretical, frictionless power known as indicated horsepower. In addition to completely disregarding power lost to friction, indicated …   Aviation dictionary

• sound pressure — noun Date: 1893 the difference between the actual pressure at any point in the field of a sound wave at any instant and the average pressure at that point …   New Collegiate Dictionary

• mean arterial pressure — (MAP) the average pressure within an artery over a complete cycle of one heartbeat; in the brachial artery …   Medical dictionary

• brake mean effective pressure — (BMEP) The average pressure in the cylinders of an engine divided by its mechanical efficiency, i.e., the ratio of the power actually delivered at an output shaft to the power developed in the cylinders. It is used as an indication of torque …   Dictionary of automotive terms