The hotfilm airmass meter for the air control provides this information. The ecm needs to know intake air volume to calculate engine load. The mass air flow sensor is probably the best way to measure the amount. Mass air flow sensors generations k8stz dq 80920 e hot wire 980 1 995 thick film on ceramics thin film. Hfm8 mass airflow sensor with electric connector airmass flow 1 1 2 2 3 3.
Mentioned maf sensors should be compatible more than in a mechanical way. This is necessary to determine how much fuel to inject, when to ignite the cylinder, and when to. Types of sensors according to the principle of operation are. I have tracked all sensors from vehicles cross reference tables. If the maf sensor malfunctions, there could be too much or too little fuel added to the mixture. Hotfilm mass air flow sensor hfm8 bosch automotive technology.
Carscope viso lab scope has been used for all measurements below and all waveforms have been taken from properly working engines and sensors. B hotfilm airmass meter, type hfm 2 w124 performance. This little sensor is usually housed in the intake hose duct or body between the fuel injection body and the air filter box. May 05, 2015 learn how to properly diagnose a mass air flow maf sensor failure, and get stepbystep guidance on replacing a bad maf sensor with a new maf sensor. Bosch 0280217515 original equipment mass air flow maf sensor. The sensor element could get contaminated or damaged. New maf map sensor catalogue ignition specialist ngk spark plugs uk ltd has released a new catalogue which features full details of the range and applications of 87 maf sensors and 69 map sensors which were launched last september are featured in the 20182019 publication. The drawn transfer curve drawn is from a bosch 0 280 218 018 maf. Technical advances like the bosch wideband oxygen sensor have allowed vehicle manufacturers to increase fuel economy as well as engine performance. Today it is the worlds largest producer of oxygen sensors and. Common maf mass air flow manufacturers are bosch, delphi, denso, hitachi, pierburg and acdelco. Bosch mass airflow sensors are engineered and tested to oe specifications and developed in conjunction with the vehicle manufacturers.
Bosch mass air flow maf sensors ensure low levels of harmful emissions with greater fuel efficiency and improved engine performance. The full story on the bosch mass airflow sensors maf for. Cars can have either an analog or digital mass air flow sensor. Learn how to properly diagnose a mass air flow maf sensor failure, and get stepbystep guidance on replacing a bad maf sensor with a new maf sensor. Here is a fast and accurate way to track a mafs performance and output to the pcm. Their task is to send information to the vehicles engine control unit ecu, enabling it to control the airfuel mixture needed by the engine to operate efficiently. Both outputs are sent to the engine control module to regulate airfuel mixture and the automatic transmission system. Mass airflow measurement is an established technology. Bosch 0280217532 mass air flow sensor bosch mass airflow sensor. Air management hfm8 hotfilm mass airflow sensor bosch. Im absolutely sure about bosch f00c2g2044, f00c2g2030, f00c2g2033. Printe in erany p oert osc h ll rits reserve also rearin any isposal eploitation reprouction. This requires sensors which precisely register the actual airmass flow and output a corresponding electrical signal. Important cookie information this website uses cookies for reasons of functionality, comfort, and statistics.
Map and maf sensors have become an integral part of the engine management system. Bosch micromachined sensorsystems in series production. Is a ripper, but a bit dated and doesnt have all the package dimensions of some sensors im looking at. Jan 23, 2012 testing a mass air flow sensor for a volvo xc v70. Bosch reserves the right to make changes at any time to this manual or accompanying. Once in a while we may encounter a total failure of a maf sensor, one that is, perhaps, short circuited or internally open. According to the type of the output signal maf sensors are. The air management system ensures that the correct air mass is supplied to the engine in every operating situation. It guarantees optimum performance and long service. Mass air flow sensor best maf sensor for cars, trucks. Ecu then uses this input, along with inputs from other sensors, to calculate the amount of fuel to be mixed with the incoming air to ensure efficient operation of the engine. Bosch mass air flow sensor vw uses several bosch mafs for its tdis. Bosch hot film maf sensors are calibrated with the housing.
The bosch sensortec development board is a versatile, universal demonstration and development environment for bosch sensortec sensor products. The film resistors on the ceramic substrate are exposed to the air mass under measurement. Optimal performance and low levels of harmful emissions. Air flow meter, mass air flow sensor and maf sensor suppliers. Connect a scan tool to see the maf sensor parameter identification data pid information. Bosch is an original equipment global leader in mass air flow technology. Replacing a mass air flow sensor on your car youtube. The full story on the bosch mass airflow sensors maf for porsche. Mass air flow maf or air mass meter sensors are often overlooked when doing your routine maintenance schedule or a general service. It consists of a heating element typically a temperature. Bosch maf sensor system datasheet electrical connector resistor. Plus or minus 5% deviation to oe specification can set a check engine light which magnifies the importance of the oe part.
Bosch 0280218088 original equipment mass air flow maf sensor. The 12 volt feed wire which connects the maf to the battery through the ignition switch or through a relay as in many gm applications b. This plugin sensor is suitable for incorporating in the air filter or, using a. Buy bosch 0280217515 original equipment mass air flow maf sensor. Some of the terms used for this component include air mass sensor air mass meter maf sensor hfm air flow sensor air flow meter. Measuring output voltage by backprobing the plug wires.
Made with oe technology for function, calibration and troublefree operation. Pedro odessa, fl 8 years ago i had always wondered why there was such a big discrepancy in pricing between what the dealer charges and what you can find a genuine bosch with the same porsche part number on the internet. Pressure confirmed i am not sure if the sensor delivers correct data and i am by nature a person interested in details so i wanted to compare it to a new sensor. The sensor then transmits this information via an electrical signal to the ecu. Here, the electronic control receives current and accurate information about the mass and other characteristics of the intake air. Bosch sensortec is a fully owned subsidiary of robert bosch, dedicated to the world of consumer electronics. Bosch 0280218010 original equipment mass air flow maf sensor. Volkswagen air mass sensor, maf bosch 0280218017, 635 new oem vw maf. Fuel injector based on a signal received from the ecm, the fuel injector delivers. Design the micromechanical sensor element is located in the plugin sensors flow passage. Bosch micromachined sensorsystems in series production robert bosch corporation research and technology center 4009 miranda ave, ca94304 email. Some of the terms used for this component include air mass sensor air mass meter maf sensor hfm air flow sensor. Air flow meter, mass air flow sensor and maf sensor. Fuel injector based on a signal received from the ecm, the fuel injector delivers the right amount of fuel to the combustion chamber.
Problems with mass air flow sensors are common in many cars, including bmw, gm, volkswagen, mazda, toyota, nissan and other brands. Oem bosch mass air flow sensor maf n20 n26 s55 s63 b38 b46 z4 the mass air flow sensor measures the amount of air flow to tell the computer how much fuel to add to the mixture. Never replace the sensor only unless recommended by the vehicle manufacturer bosch is the actual oe manufacture. The maf sensor monitors the amount of air entering the engine and in my experience it. Much more common, however, are failure modes in which the maf sensor has become unreliable, underreporting or overreporting the true airflow into the engine.
The mass air flow sensors and maf sensors which we supply are manufactured by bosch, denso, pierburg and siemens continental vdo. Maf usually is placed after the air filter and before the throttle valve in the air flow sucked into the engine. I have a bosch map sensor here 0281006108, it has 4 pins. Mass air flow maf sensors the mass air flow sensors converts the amount of air drawn into the engine into a voltage signal. Bosch number 0 281 002 216, vw number 028 906 461 and also bosch number 0 280 217 121, vw number 06a 906 461. Analog maf sensors produce a variable voltage output, whereas digital sensors send a frequency output.
The development board can be used together with bosch sensortec development desktop software to configure all sensor parameters and readout display capture the data on the attached pc. If your mass air flow sensor needs replacement, it pays off to rely on a premium quality bosch mass air flow sensor. The sensors used in split second maf kits produce a nominal 05 v output signal. Accelerometers for restraint and safety systems bosch produces accelerometers for deployment of, micromachining technology that has been developed at bosch.
Bosch automotive 281002757 original equipment mass air flow maf. Air management hfm8 otfil ass airflow sensor robert osch mbh p tuttart erany. Ive been scrounging through the bosch sites for hours but can only find fluff, nothing technical like that. The second investigation was conducted on the fourcylinder spark ignition engine of a. Bosch maf sensors can provide up to 20 percent better fuel consumption through accurate air flow measurement the bosch patented design increases robustness against water and is unharmed by dirt and contamination. This website uses cookies for reasons of functionality, comfort, and statistics. The heater resistor rh maintains the plati num metallicfilm resistor rs at a constant temperature above that of. For warranty information about this product, please click here pdf. Sensors are just what you need to lower your rides emission levels and increase fuel efficiency. For example, in some mazda skyactiv engines, a failed mass air flow sensor could cause the engine to crank but not to start.
For reasons associated with flow, this sensor is far less sensitive to contamination than, for example, a hotwire airmass meter, and there is no need for the ecu to incorporate a selfcleaning burn. Regardless of the type of maf, the sensors work similarly. Bosch oem mass air flow maf sensor for 200920 bmw 335d x5 l6 3. They have internal regulation that insures that the measurement is accurate as battery voltage changes. Sensor and housing come in one unit for efficient and accurate engine performance. Inputs sensors engine control systems i course 852 21 positionmode sensors and switches switch closed with the switch closed, voltage is present at the ecm. Bosch reserves the right to make changes at any time to this manual or accompanying product without obligation to notify any person or organization of such changes. This requires sensors which precisely register the actual airmass flow and output a corresponding electrical signal to the open and closedloop control electronics.
I want to measure the voltage output at certain temperature but do not get a signal. Mass air flow maf sensors a maf sensor measures the exact amount of air entering the vehicles engine. C70, s60, s70, s80, v70, v70 t5, v70 xc bosch automotive 281002757 original equipment mass air flow maf sensor. Trust the experience of bosch bosch invented the automotive oxygen sensor and has manufactured 400 million sensors since 1976. This is necessary to determine how much fuel to inject, when to ignite the cylinder, and when to shift the transmission. Bosch air mass sensors are built to exacting specifications as required for such a sensitive measuring device.
888 538 485 781 1344 1015 362 1504 1429 520 1129 341 1163 115 1019 1254 244 1554 1176 337 999 1541 916 311 937 1218 146 844 1240 1190 714