hot-wire airflow meter

hot-wire airflow meter
A constant-temperature hot-wire sensing device, used in electronic fuel injection systems, which measures the rate of a mass airflow into the engine by measuring the current needed to keep the hot wire at the same temperature

Dictionary of automotive terms. 2015.

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  • mass airflow meter — (MAF) device for measuring the mass flow of air into an engine. Also see airflow sensor hot wire airflow meter …   Dictionary of automotive terms

  • meter — [1] A device for measuring the quantity of a substance passing through it. [2] To measure with a meter. [3] to supply at a measured rate. [4] A distance of about a yard (actually a little over 39.37 ). Also spelled metre. Also see airflow meter… …   Dictionary of automotive terms

  • airflow — The passage of air which moves around an object (esp. a vehicle) or through an air duct (e.g., ventilation system or exhaust system). Also see L jetronic air flow meter hot wire airflow meter mass airflow meter …   Dictionary of automotive terms

  • air flow meter — A meter which measures the rate at which air enters the engine. In Bosch systems, any device that measures the amount of air being used by the engine. The control unit uses this information to determine the load on the engine. The two most common …   Dictionary of automotive terms

  • Mass flow sensor — A mass airflow sensor. A mass air flow sensor 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… …   Wikipedia

  • Fuel injection — Fuel rail connected to the injectors that are mounted just above the intake manifold on a four cylinder engine. Fuel injection …   Wikipedia

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