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	Dust defelector for silicon mass airflow sensor - Patent 4981035
		The silicon sensing element of a mass airflow sensor is shielded from direct impact by large dust particles by means of a plastic deflector that is disposed in spaced upstream relationship to the entrance of a by-pass venturi containing the sensor.
		Sensor 22 is able to provide an accurate measurement of the flow through the by-pass venturi, and flow through the by-pass remains correlated with the total flow through the air body so that accuracy of the measured airflow can still be attained.
		The cooperative effect of deflector 26 with sensing element 24 and member 34 is such that a portion of the airflow through the by-pass is caused to flow in the channel 44 created between the deflector and the mounting member and thereby pass over the flush-mounted sensing surface of the sensing element.
	www.freepatentsonline.com /4981035.html (2015 words)

	Encyclopedia: Mass airflow sensor
		Airflow between the ports is caused by differential pressure resulting from the relative wind that is incident upon the aircraft at an angle relative to the aircraft's longitudinal axis for AOS or wing chord for AOA.
		Airflow between the ports is caused by differential pressure resulting from the relative wind that is incident upon the aircraft at an angle to the aircraft's wing chord for AOA.
		The mass airflow is a function of the AOA of the fuselage with respect to direction of flight, the aircraft forward speed and pressure altitude.
	www.nationmaster.com /encyclopedia/Mass-airflow-sensor (861 words)

	Electronic mass airflow sensor circuit and method for manufacturing same - Patent 5508491
		As previously mentioned, the primary and secondary sensor elements 22,24 are suspended within the metallic or plastic housing of the mass airflow sensor and are the key to proper sensor operation.
		As a result, primary sensor element 22 is also referred to as the "hot" element and is shown having a resistance value of R.sub.H. In contrast, secondary sensor element 24 functions at ambient air temperature during operation of the mass airflow sensor.
		In the mass airflow sensor manufactured by the method of the present invention, however, thick film resistor 26, connected in series with secondary sensor element 24 to form combination element 28, is subsequently sized via laser trimming.
	www.freepatentsonline.com /5508491.html (6420 words)

	RepairNation.com - Automotive Encyclopedia: M
		A sensor usually located in the intake of fuel injected engines which measures pressure inside the intake manifold.
		A signal from the airflow sensor is sent to the vehicle's computer to determine the amount of fuel necessary.
		Sensors at each sense wheel lockup and automatically modulate hydraulic pressure to the affected wheel, which is better than driver modulation because a driver can modulate a brake system, but not control a single brake at a particular wheel.
	www.repairnation.com /automotive_encyclopedia/page_m.htm (3264 words)

	AAXEL - Induction Tech - Understanding the Mass Airflow Sensor!
		The function of the mass airflow sensor is to meter the CFM of air as it enters the engine.
		The sensor is designed to give a feedback voltage which is proportional to the amount of airflow entering the engine to the engine’s computer management system.
		The stock size mass airflow sensor on most GM and Ford vehicles is 65 to 70mm.
	www.proficientperformance.com /tech_mass_airflow_sensor.php (420 words)

	Mass airflow sensor for pulsating oscillating flow systems - US Patent 6711491 (Site not responding. Last check: 2007-10-20)
		The present MAF sensor calibration scheme is then implemented as a function of the mean sensor signal, the ratio of the maximum sensor signal to the mean sensor signal, and the engine speed.
		The MAF sensor 34 is a hot-wire anemometer-type MAF sensor with associated circuitry as is known in the art.
		During oscillatory airflow, an annular effect could be observed which is schematically represented as arrows 50 wherein the maximum flow velocity is near the walls of the intake manifold 42 at a certain moment.
	www.patentstorm.us /patents/6711491.html (3136 words)

	Datasheet -- AWM42150VH
		The microbridge mass airflow sensor operates on the theory of heat transfer.
		Mass airflow is directed across the surface of the sensing elements.
		The small size and thermal isolation of the microbridge mass airflow sensor are responsible for the extremely fast response and high sensitivity to flows.
	catalog.sensing.honeywell.com /printfriendly.asp?FAM=massairflow&PN=AWM42150VH (721 words)

	Reference.com/Encyclopedia/Mass flow sensor
		A mass flow sensor responds to the amount of a fluid (usually a gas) flowing through a chamber containing the sensor.
		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.
		The vane moves in proportion to the airflow, and a voltage is generated in proportion to the distance the vane moves.
	www.reference.com /browse/wiki/Mass_airflow_sensor (865 words)

	Mass Airflow Sensor - TDIClub
		The Mass Airflow Sensor or MAF sensor is responsible for transmitting air flow data to the ECU.
		The main part of the sensor is a heating element.
		If the sensor is not too far gone, sometimes it can be cleaned with good results.
	communityhosting.net /tdiclub/index.php/Mass_Airflow_Sensor (684 words)

	CAPA : CAPA Performance Products
		Because the GMS mass airflow sensors are "truly calibrated" they provide 10-15 rear wheel horsepower without drivability problems, emission test failures, guesswork, or lost performance after kilometres of driving.
		The low cost mass airflow sensor is designed specifically as a low-cost alternative to ported stock meters, this sensor is not emission legal and is for off-road use only.
		When using the GMS mass airflow sensor with any type of cold air induction, high flow induction, or high flow air filter, your GMS mass airflow sensor must be calibrated with cold air tuning or a check engine light can occur.
	www.capa.com.au /capa_performance_sensors.htm (1094 words)

	mass airflow sensor
		The mass airflow sensor’s purpose is to measure the mass amount of air entering the engine.
		The mass sensor is usually located on the intake inlet running to the intake manifold.
		The heat is carried away from the wire dependent on the airflow and temp.
	www.freeengineinfo.com /mass-airflow-sensor.htm (411 words)

	Mass Airflow Sensor in my 97 Protege
		I've been told that it has a broken Mass Airflow Sensor, and the cost to replace it will be around $1500: only about $35 is for the labour.
		Biggest source of damage to MAF sensors is a poorly fitting or missing air filter that allows unfiltered air to contaminate the sensor.
		I'm still searching for aftermarket alternatives and I'm wondering if I wouldn't be better off searching for a MAF Sensor for a 93-97 Miata, as the part appears to be the same according to onlinemazdaparts.com, and there generally seem to be more places dealing in miata parts as opposed to protege parts.
	www.mazdaforum.com /fb.asp?m=34316&go=last&key= (1178 words)

	Mass AirFlow Sensor article (Site not responding. Last check: 2007-10-20)
		The MAF sensors used on many of today's cars primarily use the two-wire, hot/cold wire, setup to detect the mass of the air passing through it.
		This is why when a MAF transfer function, the data stored in the computer about the sensor, is derived for one vehicle it may not be identical to the transfer function for a similar vehicle with the same exact sensor.
		If there is airflow noise at the flatter portion of the curve, the noise voltage is a much greater percentage of the total voltage being sent to the computer and the computer may balk.
	home.flash.net /~rfm2/massair.htm (1835 words)

	Granatelli Mass Air Flow Sensor
		Granatelli Motor Sports performance mass airflow sensors are ideal for adding extra performance with none of the hassles.
		This airflow measurement reduces the calculations required to control fuel and ignition spark advance.
		Mass airflow sensors can react quickly and accurately to sudden changes in airflow while improving overall vehicle performance and drivability.
	www.vehiclefx.com /truck-accessories/performance-accessories/granatelli-mass-air-flow-sensor.htm (512 words)

	Volkswagen: Mass airflow Sensor
		Over the last 2.5 years I have had the Mass airflow Sensor replaced about 12 times (it's in the shop again today).
		the MAF sensors are generally the cause of running issues, and tend to have a limited life.
		However 12 times in two and a ahlf years or 215,000km seems to be too frequent.
	en.allexperts.com /q/Volkswagen-801/Mass-airflow-Sensor.htm (344 words)

	[No title]
		Connect a voltage of 12V to the MAF sensor's positive terminal B and negative terminal C. Using a voltmeter, measure the voltage between terminal C and terminal D of the MAF sensor; it should be 0.1-0.5V.
		Blow air through the MAF sensor, from the air cleaner side, while measuring the voltage between the SA terminal and the BR terminal of the MAF sensor connector.
		Blow air through the MAF sensor, from the air cleaner side, while measuring the voltage between the W terminal and the BR terminal of the MAF sensor connector.
	www.autozone.com /servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/1c/61/c4/0900823d801c61c4.jsp (2131 words)

	Aftermarket Airflow Sensors
		It does this by eliminating the OE honeycomb grate at the entrance of the sensor body, and by eliminating the large dividing vane that cuts the opening in half.
		Another key feature of the aftermarket mass-airflow sensor is that it has been injection-molded out of a polymer that rejects heat better than the OE metal sensor.
		Next, remove the OE mass-airflow sensor by loosening the two clamps that attach it to the intake track.
	www.valvoline.com /carcare/articleviewer.asp?pg=pht20011101ma&cccid=4&scccid=1 (446 words)

	AutoZone.com \| Repair Info \| Mass Airflow Sensor - How To Instructions
		While pushing the mass air flow sensor vane open and closed, be careful not to mark or damage the vane or sensor housing.
		With the MAF sensor removed, connect the ohmmeter across the sensor's output and input terminals.
		When the ohmmeter leads are connected to the sensor's input and output terminals, the ohmmeter reading should increase smoothly as the sensor vane is opened and closed.
	www1.autozone.com /servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/04/fa/92/0900823d8004fa92.jsp (973 words)

	Granatelli Motorsports Ford Modular Truck/SUV Mass Airflow Sensor (Engine Performance - Mass Air Flow Sensors) at Truck ...
		Granatelli Motor Sports performance mass airflow sensors are ideal for adding extra performance with none of the hassles.
		This airflow measurement reduces the calculations required to control fuel and ignition spark advance.
		Mass airflow sensors can react quickly and accurately to sudden changes in airflow while improving overall vehicle performance and drivability.
	truck.hownd.com /product-1294-granatelli-motorsports-ford-modular-truck-suv-mass-airflow-sensor.html (405 words)

	3000GT/Stealth International Message Center - Laptop Programmable Mass Airflow Sensor ~ Elec Eng, Pgrmrs, & ...
		This hot-wire type MAF replaces the stock Karman-vortex type MAS and must be used with an electronic device to convert the analog voltage signal (representing mass air flow) to the square-wave voltage signal (frequency counts that represent volume air flow) that the Mitsubishi factory engine control unit wants to see.
		Upscale applications of the Karman-Vortex air mass measurement principle can be found on the Lexus LS 400 and '87 and up Toyota Supras.
		The speed of vibration of a thin metal mirror in the intake vortex is monitored optically to generate a frequency signal that varies according to the mass of air entering the engine.
	www.3si.org /forum/showthread.php?t=190582 (1721 words)

	Mass Air Flow Sensor (Site not responding. Last check: 2007-10-20)
		The Mass Air Flow Sensor is probably the best way to measure the amount of air an engine takes in (engine load).
		This sensor not only measures the volume of air but also the density as well.
		Some use an intake air temperature sensor in the manifold or the intake piping.
	www.scantecgb.com /index_MASS.htm (288 words)

	Mass Airflow Sensor
		The meter converts the amount of air taken into the engine into an electrical signals by using the heat transfer between the incoming air and a heating resistor (hot wire) located in the air intake.
		If voltage is present inspect terminal C1 wiring to the MAF sensor for a short to voltage.
		Measure the resistance between the MAF sensor terminals and chassis ground.
	www.geocities.com /kuleshoff/MAF.htm (511 words)

	Articles - Fuel injection (Site not responding. Last check: 2007-10-20)
		Airflow: MAF sensor, sometimes this is inferred with a MAP sensor
		The sensors were susceptible to vibration and dirt.
		In 1982, Bosch used a mass airflow meter on their L-Jetronic system, changing the name to LH-Jetronic (L for Luft, or air, and H for HeiÃe-leitung, or hot-wire), as the first true sensor for actual air mass involved the use of a heated platinum wire.
	www.chainsawcenter.com /articles/Fuel_injection (4291 words)

	[No title]
		Mazda Motor Corporation is extending the warranty coverage of the Mass Airflow Sensor on certain 1999-2000 Protegé vehicles with the 1.6L engine and Non-California Emission Control Warranty.
		If the malfunction is due to a failure of the Mass Airflow Sensor during the terms of this Warranty Extension, it will be repaired free of charge.
		You have paid for repair to the Mass Airflow Sensor due to a defect in material or workmanship.
	web2.airmail.net /theman/protegefaq/tsb/ssp56.htm (1169 words)

	mass airflow sensor and retired beanie baby prices \|\| Industrial Machinery \|\| (Site not responding. Last check: 2007-10-20)
		mass airflow sensor, dc motor control circuit, dc motor drive, dc motor speed control, department 56 retired, department 56 retired piece, dept 56 retired, detector sensor smoke system, detector synchronous, diagram sensor speed, diesel tachometer — Electro-Sensors, Inc. can take care of all your industrial speed monitoring, vibration sensing and motor control needs.
		[mass airflow sensor, dc motor control circuit, dc motor drive, dc motor speed control, department 56 retired, department 56 retired piece, dept 56 retired, detector sensor smoke system, detector synchronous, diagram sensor speed, diesel tachometer]
		mass airflow sensor, electronic speed control, electronic tachometer, encoder optical shaft, engine tachometer, fan speed control, faria tachometer, file synchronizer, flame sensor, flow sensor, force sensor
	www.industrial-machinery.com /mass-airflow-sensor.html (178 words)

	Reinforced plastics blend for airflow sensor body
		An injection moulded mass airflow sensor body for Audi engines is made up of a reinforced plastics blend that offers a wide temperature range and chemical resistance.
		The Hitachi body serves both to mount the mass airflow sensor system precisely and to shape air flow using a moulded-in grid.
		To control the turbulent airflow, the grid induces a laminar flow that helps ensure accurate feedback about engine air intake temperature to the engine control unit.
	www.jobwerx.com /news/dsm-biz-948885-275.html (471 words)

	Upgrading the Factory Air Mass to our Ford Focus
		The stock air box is not designed with optimum airflow in mind and can be extremely restrictive at higher rpm due to a series of baffles in the lower portion of the box, which are there to help quiet the incoming air stream at higher rpm.
		The factory mass airflow sensor on the Focus measures in at a minute 58mm while the Granatelli Motor Sports unit is noticeably larger at 70mm.
		The actual sensor (inside the unit) is stock but calibrated for the larger inner size of the meter.
	www.musclemustangfastfords.com /tech/0402mm_focus (1437 words)

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