Mass Air Flow A hot wire is used to measure the mass of the air entering the engine.
{"Image DocumentName": "James HaldermanMass Air Flow. A hot wire is used to measure the mass of the air entering the engine.", "Image ImageDescription": "The electronics, in the sensor itself, try to keep the wire 70\u00b0 C above the temperature of the incoming air. The more current (amperes) needed to heat the wire, the greater the mass of air. The current is converted to a frequency. Making Sense Out of Sensors.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}