08-16-2017, 10:34 PM
Definition: A device that's used in many electronic fuel injection systems for measuring the volume of air entering the engine. Some use a spring-loaded vane while others use a hot wire or heated filament to sense air flow.
A mass air flow (MAF) sensor responds to the amount of a fluid (usually a gas) flowing through a chamber containing the sensor. It is intended to be insensitive to the density of the fluid.
References:
http://en.wikipediawiki/Mass_flow_sensor
http://autorepair.aboutlibrary/glossary/bldef-022.htm