manifold absolute pressure

manifold absolute pressure
(MAP) manifold pressure measured on the absolute pressure scale, an indication of engine load. At sea level, MAP = 1 bar (14.5 psi)

Dictionary of automotive terms. 2015.

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  • manifold absolute pressure sensor — (MAP) A sensor which monitors the engine s intake manifold pressure and transmits the data to the engine controller. A pressure sensitive disk capacitor used to measure air pressure inside the intake manifold. The Map sensor sends a signal to the …   Dictionary of automotive terms

  • absolute pressure — Pressure measured from a starting point of zero in perfect vacuum. When measured by the absolute pressure scale, atmospheric pressure is 14.7 psi or 29.92 inches of mercury (in Hg). Also see manifold absolute pressure sensor …   Dictionary of automotive terms

  • absolute pressure — The pressure measured relative to zero pressure, or a total vacuum, as opposed to gauge pressure, which is pressure measured relative to ambient pressure. A manifold absolute pressure (MAP) gauge measures absolute pressure in a reciprocating… …   Aviation dictionary

  • absolute pressure controller — A type of turbo charger controller that limits the maximum discharge pressure the turbocharger’s compressor can build up when the aircraft is flying below its critical altitude. Absolute pressure is indicated by a manifold absolute pressure (MAP) …   Aviation dictionary

  • absolute pressure sensor — See manifold absolute pressure sensor …   Dictionary of automotive terms

  • barometric and manifold absolute pressure sensor — (BMAP) a housing containing both BP and MAP sensors …   Dictionary of automotive terms

  • Manifold vacuum — Not to be confused with Vacuum manifold. Manifold vacuum, or engine vacuum in an internal combustion engine is the difference in air pressure between the engine s intake manifold and Earth s atmosphere. Manifold vacuum is an effect of a piston s… …   Wikipedia

  • manifold pressure — The absolute pressure in the intake manifold of a reciprocating engine. It is the pressure at which the fuel air mixture is forced into cylinders and is equal to the atmospheric pressure plus a boost less friction losses in the manifold less the… …   Aviation dictionary

  • manifold pressure sensor — A sensor that reads pressure changes in the intake manifold in relation to barometric pressure. Also known as manifold vacuum sensor, manifold absolute pressure sensor, pressure differential sensor, or vacuum sensor …   Dictionary of automotive terms

  • pressure — [1] The force due to the weight of a substance exerted over the area the substance occupies. In metric measure, it is the force acting on each square metre. To calculate pressure, divide the force (in newtons) by the area (in square metres). It… …   Dictionary of automotive terms

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