What is a MAF sensor?

[ODerek]

MAF stands for Mass Air Flow sensor, also known as an air flow meter. Below is relevant information: 1. Function of MAF: The air flow sensor is one of the crucial sensors in a fuel-injected engine, as the amount of air drawn into the engine determines the fuel injection quantity. The air intake serves as a key basis for fuel injection. If the MAF sensor malfunctions, the vehicle's computer cannot receive accurate signals, leading to improper fuel injection control. This can result in an overly rich or lean air-fuel mixture in the engine, potentially affecting normal engine operation. 2. Working principle of MAF: After outside air enters the throttle body, it flows through the sensor and into the engine, carrying away a significant amount of heat. The greater the airflow, the more heat is dissipated. To maintain a constant temperature in the MAF sensor, additional current is required to heat the sensor, which then regulates the airflow through current control. 3. Types of MAF: Common air flow sensors include vane-type air flow sensors, Karman vortex air flow sensors, hot-wire air flow sensors, and hot-film air flow sensors. Any malfunction in a vehicle's sensors, regardless of location, can affect normal operation, so timely inspection and repair are essential when issues arise.