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- Mass_flow_sensor abstract "A mass air flow sensor (MAF) is used to find out the mass flowrate of air entering a fuel-injected internal combustion engine.The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature, altitude and the use of forced induction, which means that mass flow sensors are more appropriate than volumetric flow sensors for determining the quantity of intake air in each piston stroke. (See stoichiometry and ideal gas law.) There are two common types of mass airflow sensors in use on automotive engines. These are the vane meter and the hot wire. Neither design employs technology that measures air mass directly. However, with additional sensors and inputs, an engine's electronic control unit can determine the mass flowrate of intake air. Both approaches are used almost exclusively on electronic fuel injection (EFI) engines. Both sensor designs output a 0.0–5.0 volt or a pulse-width modulation (PWM) signal that is proportional to the air mass flow rate, and both sensors have an intake air temperature (IAT) sensor incorporated into their housings. When a MAF is used in conjunction with an oxygen sensor, the engine's air/fuel ratio can be controlled very accurately. The MAF sensor provides the open-loop controller predicted air flow information (the measured air flow) to the ECU, and the oxygen sensor provides closed-loop feedback in order to make minor corrections to the predicted air mass. Also see MAP sensor.".
- Mass_flow_sensor thumbnail Mass-airflow.jpg?width=300.
- Mass_flow_sensor wikiPageExternalLink maf-sensor-cleaning-problems.
- Mass_flow_sensor wikiPageExternalLink 5510fralick.html.
- Mass_flow_sensor wikiPageExternalLink watch?v=_TO7ZC5N-aA.
- Mass_flow_sensor wikiPageID "2432911".
- Mass_flow_sensor wikiPageRevisionID "603219784".
- Mass_flow_sensor hasPhotoCollection Mass_flow_sensor.
- Mass_flow_sensor subject Category:Engine_sensors.
- Mass_flow_sensor subject Category:Flow_meters.
- Mass_flow_sensor subject Category:Gas_technologies.
- Mass_flow_sensor subject Category:Mass.
- Mass_flow_sensor type Abstraction100002137.
- Mass_flow_sensor type Act100030358.
- Mass_flow_sensor type Activity100407535.
- Mass_flow_sensor type Application100949134.
- Mass_flow_sensor type DefiniteQuantity113576101.
- Mass_flow_sensor type Event100029378.
- Mass_flow_sensor type FlowMeters.
- Mass_flow_sensor type GasTechnologies.
- Mass_flow_sensor type LinearUnit113603305.
- Mass_flow_sensor type Measure100033615.
- Mass_flow_sensor type Meter113659162.
- Mass_flow_sensor type MetricLinearUnit113649268.
- Mass_flow_sensor type MetricUnit113604275.
- Mass_flow_sensor type Occupation100582388.
- Mass_flow_sensor type Profession100609953.
- Mass_flow_sensor type PsychologicalFeature100023100.
- Mass_flow_sensor type Technology100949619.
- Mass_flow_sensor type UnitOfMeasurement113583724.
- Mass_flow_sensor type Use100947128.
- Mass_flow_sensor type YagoPermanentlyLocatedEntity.
- Mass_flow_sensor comment "A mass air flow sensor (MAF) is used to find out the mass flowrate of air entering a fuel-injected internal combustion engine.The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure.".
- Mass_flow_sensor label "Debimetro".
- Mass_flow_sensor label "Luchtmassameter".
- Mass_flow_sensor label "Luftmassenmesser".
- Mass_flow_sensor label "Mass flow sensor".
- Mass_flow_sensor label "Датчик массового расхода воздуха".
- Mass_flow_sensor label "エアフロメーター".
- Mass_flow_sensor sameAs Luftmassenmesser.
- Mass_flow_sensor sameAs Αισθητήρας_μέτρησης_μάζας_αέρα.
- Mass_flow_sensor sameAs Debimetro.
- Mass_flow_sensor sameAs エアフロメーター.
- Mass_flow_sensor sameAs Luchtmassameter.
- Mass_flow_sensor sameAs m.07cpbt.
- Mass_flow_sensor sameAs Q1854812.
- Mass_flow_sensor sameAs Q1854812.
- Mass_flow_sensor sameAs Mass_flow_sensor.
- Mass_flow_sensor wasDerivedFrom Mass_flow_sensor?oldid=603219784.
- Mass_flow_sensor depiction Mass-airflow.jpg.
- Mass_flow_sensor isPrimaryTopicOf Mass_flow_sensor.
