2007-07-15 12:10:30 · 10 answers · asked by susan m 1 in Cars & Transportation ➔ Maintenance & Repairs
A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine. The air mass information is necessary for the engine control unit to calculate and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the vehicle's operating environment, and this is an ideal application for a mass sensor. (See stoichiometric, ideal gas law, and density.)
There are two common types of mass airflow sensors in usage on gasoline engines. They are the vane meter and the hot wire. Neither design employs technology that measures air mass directly. However, with an additional sensor or two, the engine's air mass flow rate can be accurately determined.
Both approaches are used almost exclusively on EFI (electronic fuel injection) engines. Both sensor designs output a 0 - 5.0 volt signal that is proportional to the air mass flow rate, and both sensors have an IAT sensor (intake air temperature) incorporated into their housings.
When a MAF is used in conjunction with an exhaust gas oxygen(EGO) sensor, the engine's air/fuel ratio can be controlled very accurately. The MAF sensor provides the open-loop predicted air flow information (the measured air flow) to the engine's ECU, and the EGO sensor provides closed-loop feedback in order to make minor corrections to the predicted air mass.
2007-07-15 12:15:49 · answer #1 · answered by a 4 · 3⤊ 0⤋
Mass Air Flow (MAF)
The MAF is a key engine sensor that detects the volume of air being drawn into the engine.
2007-07-15 12:16:37 · answer #2 · answered by Just Me 4 · 0⤊ 0⤋
A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine.
MAF- Mass Air Flow Sensor
2007-07-16 12:20:12 · answer #3 · answered by i_b_i_f_s_hg_amen 2 · 0⤊ 0⤋
MAF= Mass Air Flow sensor
It measures the mass of air passing through the throttle valve in the throttle body it sends this reading to the computer and the computer sends the corrects mass of fuel to the fuel injectors and into the cylinders making the most power and correct emisssions.
2007-07-15 15:44:53 · answer #4 · answered by 1999 Nissan Skyline GTR Vspec 5 · 0⤊ 1⤋
MAF MASS AIR FLOW SENSOR MEASURES THE AMOUNT OF AIR PASSING THROUGH THE CHAMBER SO THE ENGINE GETS THE RIGHT AMOUNT OF FUEL TO BURN
2007-07-17 11:24:13 · answer #5 · answered by Anonymous · 0⤊ 0⤋
It's a Mass Airflow Sensor. It measures the air intake and volumn.
Here's a website for you:http://www.kemparts.com/TechTalk/tt06.asp
2007-07-15 12:19:32 · answer #6 · answered by serious 4 · 1⤊ 0⤋
It is a Mass Air-Flow sensor.
It measures the amount of air flowing into the engine, so that the engine management system can supply the engine with the appropriate amount of fuel to burn cleanly in that amount of air.
2007-07-16 00:03:20 · answer #7 · answered by Neil 7 · 0⤊ 0⤋
What Is Maf
2016-10-22 00:01:36 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Mass Air Flow sensor.
Tells your computer how much air is going into the engine.
2007-07-15 12:15:19 · answer #9 · answered by sweet69firebyrd 3 · 2⤊ 0⤋
I guess you have a german car... a VW or an Audi.
I dunno... but they often need cleaning... then computer adjusting after they are put back in, to keep good performance. It's something to do with the throttle i think.
2007-07-15 12:14:00 · answer #10 · answered by Narky 5 · 0⤊ 2⤋