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21 January, 08:59

Technician A says that a MAF sensor actually measures the density and amount of air flowing into the engine. Technician B says a that hot wire MAF sensor uses the electronics in the sensor itself to heat a wire 70°C above the temperature of the air entering the engine. Who is right?

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  1. 21 January, 10:49
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    Both technicians A and B are right

    Explanation:

    A mass flow sensor (MAF sensor) is defined as a sensor which is normally used to estimate the mass flow rate of air that flows into an internal combustion engine. The estimated parameter is used at the engine control unit to ensure that the actual mass of fuel is supplied to the engine. A MAF sensor can also measures the density and amount of air flowing into the engine. In addition, a hot wire MAF sensor uses the electronics in the sensor itself to heat a wire 70°C above the temperature of the air entering the engine. Therefore, both technicians A and B are right.
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