What does MAF mean in automobile system?

In the automobile, MAF is the air flowmeter of the engine intake system.

Air flow sensor

The control of fuel injection pulse width is divided into three parts: among them, air flow sensor (MAF), throttle position sensor (TPS) and engine speed sensor control the basic fuel injection pulse width; The air temperature sensor (MAT), coolant temperature sensor (ECT) and atmospheric pressure sensor (BARO) are responsible for adjusting the fuel injection pulse width.

air mass flow

Do not set the fault code; If the throttle position sensor of the vehicle is damaged, the throttle opening data sent to ECU is 3% without changing the engine working condition. In fact, the information input to the ECU is that the engine speed is 800 rpm, the throttle opening is 3%, the air flow (MAF) sensor is 2kHz, and the engine speed is 800 rpm.

Air mass flow

Section 1 Engine Coolant Temperature (ECT) Sensor and Its Maintenance Section 2 Intake Air Temperature (IAT) Sensor and Its Maintenance Section 3 Intake Manifold Absolute Pressure (MAP) Sensor and Its Maintenance Section 4 Mass Air Flow (MAF) Sensor and Its Basic Maintenance Section 7 Crankshaft Position (CKP) Sensor and Its Maintenance

Air mass flow

Air flow sensor (Hz) The signal input by the air flow sensor (MAF) to the powertrain control module is a frequency signal, which changes from 3000 Hz at idle to 7000 Hz at full throttle. The PCM converts this frequency signal into grams per second to display the air flow on the scan tool.