This type of MAF is used to measure the rate of flow of air by placing the thin resistive (hot) wire down to the airflow. ![]() This type of MAF is used to monitor and measure the amount of air flowing via a vehicle’s engine air intake by placing a vane in the air stream. Mass Air Flow Type Sensor Vane Type Mass Air Flow Sensor (MAF) The volume air flow sensor is shown below. Then the ECM calculates the volume of flow of air by combining the information of volume air flow air temperature measurements. These are used to detect airflow using optical sensors that monitor the frequency of artificial turbulence. It is a type of airflow sensor is called the Karman Vortex airflow sensor. These categories are further divided into different types, which are explained below. They are volume air flow sensors and mass air flow sensors (MAF). There are 2 categories of airflow sensors. Air Flow Sensor TypesĪir flow sensors are used to determine the mass or volume of flow of air in a channel. In addition, the airflow sensor has an integrated IAT sensor, which gives the IAT signal to detect the intake air temperature signal. This signal circuit is separately grounded. The airflow sensor signal circuit is built into the mass air flow sensor to calculate the amount of current flowing through the sensor, convert this current into voltage, and transmit it to the vehicle’s ECU via the air flow sensor or MAF signal cable. MAF ground wire is used as a common ground connection for both vehicle’s ECU and sensor. This wire transfers the signal of the sensor (output voltage) to the ECU. The mass air flow signal wire is connected to the vehicle’s ECU. There are 4 wires in this wiring diagram, which are 12V positive power supply, MAF ground, IAT (Intake Air temperature signal) signal, and MAF signal.Ī positive power supply of 12V or called hot-wire is connected to a relay and a fuse in the fuse box. The 4-wire air flow sensor wiring diagram is shown below and explained in this section. (MAF ground, MAF signal, MAF power, air temperature signal, air temperature reference voltage).
0 Comments
Leave a Reply. |