What is the function of the intake manifold pressure sensor?

[Roxanne]

The function of the intake manifold pressure sensor: It acts as an air flow meter, primarily used to measure the amount of air entering the engine and provide this data to the engine control computer as a basis for controlling fuel injection quantity and ignition timing. The intake manifold pressure sensor, abbreviated as MAP, is a key component in gasoline engines with D-type fuel injection systems. Its working principle involves measuring the absolute pressure in the intake pipe to determine air density, which, combined with engine speed, calculates the amount of incoming air. It should be noted that in conventional engines, the manifold between the throttle valve and the intake valve is generally in a vacuum state.