Other types of mass airflow sensors include "cold-wire" sensors (which detect the varying inductance of a circuit connected to thin metallic strips that vibrate as the air goes by) and membrane sensors (MEMS devices that use the change in temperature of a heated membrane to detect air flow in a manner similar to the "hot wire" sensor). This current is detected by the sensor, which then relays this information to the ECM. Bosch Mass Air Flow (MAF) sensors ensure low levels of harmful emissions with. As the air moving through the sensor cools the hot wire, the current flow through the wire changes. Bosch is an original equipment global leader in mass air flow technology. Bosch Mass Air Flow (MAF) sensors ensure low levels of harmful emissions. Bosch is an original equipment global leader in mass air flow technology. Backed by Bosch Limited Lifetime Warranty. Can provide up to 20 percent better fuel consumption. This wire is heated to a specified temperature, usually 100's of degrees Fahrenheit above the ambient temperature detected by the intake air temperature (IAT) sensor. Guaranteed to match vehicle requirements for performance, drivability, fuel economy and emissions. The most common designs use a thin resistive wire (usually platinum) that hangs down into the air flow. There are several types of mass air flow sensors. The ECM combines volume airflow information with air temperature measurements to calculate the mass air flow. This sensor determined the velocity of the air flow by monitoring the frequency of an artificially induced turbulence using optical sensors. Motorcraft DY1164 Throttle Position Sensor. Hitachi MAF0031 Mass Air Flow Sensor, Black, 1.46 x 1.82 x 3.57 inches. Later, another style of volume air flow sensor, the Karman Vortex airflow sensor, was introduced. This item Hitachi MAF0012 Mass Air Flow Sensor To Fit Ford/Mazda OE 3元Z-12B579-BA. The first airflow sensors to appear in cars measured the deflection of a plate placed in the airflow path. Because the stoichiometry of the air-fuel reaction depends fundamentally on the mass (proportional to the number of molecules) of the air, rather than the volume, the use of mass air flow sensors (MAFs) is much more widespread. As the load on an internal combustion engine varies, it is necessary to determine how much air is entering the cylinders in order to determine how much fuel to inject and how to adjust the engine timing. There are two main types of air flow sensors: volume air flow sensors, which measure the effect of moving air on a pinwheel or deflecting plate, and mass air flow sensors, which measure the mass of air as it passes through the sensor. ![]() In an automobile, the primary use of an air flow sensor is to determine the amount of air drawn into the engine through the intake manifold. ![]() Air flow sensors measure either the volume or the mass of air flowing in a channel. On average, the cost for a Mercury Sable Mass Airflow Sensor Replacement is 198 with 103 for parts and 95 for labor.
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