The DENSO Difference

DENSO Mass air flow sensors are developed to meet the exact standards for car manufacturers across the globe. Today, Denso's hot wire type replacements offer the aftermarket customers access to the same DENSO innovations, coupled with outstanding OEM quality.

How Denso Mass Air Flow Sensors Work

The Mass Air Flow Sensor (MAF) measures the amount of air volume flowing into a car’s engine, and sends the Electronic Control Unit (ECU) a voltage that represents the airflow.

Analysis

A portion of the air that's been cleaned by the air filter is bypassed into the hot-wire measurement area, where the intake airflow volume is measured. The hot-wire type MAF Sensor responds to temperature changes in the heating element. Changes in the resistance value and current of the heating element are converted into proportional voltage in the control circuit, and then sent to the ECU to calculate the amount of engine intake air volume.

Intake air temperature sensor also detects the intake air temperature and outputs it to the ECU. Responding to this signal, the ECU judges the air density and corrects the fuel injection quantity.