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	Oxygen sensor - Wikipedia, the free encyclopedia
		Oxygen sensors are used in oxygen analyzers which find a lot of use in medical applications such as anesthesia monitors, respirators and oxygen concentrators.
		sensor, lambda probe, lambda sensor, lambda sond or EGO (exhaust gas oxygen) sensor, is a small sensor inserted into the exhaust system of a petrol engine to measure the concentration of oxygen remaining in the exhaust gas to allow an electronic control unit (ECU) to control the efficiency of the combustion process in the engine.
		That is one where the amount of oxygen entering the cylinder is sufficient to fully oxidise the carbon monoxide (CO), produced in burning the air and fuel, into carbon dioxide (CO A reading of 0.8 V (800 mV) DC represents a rich mixture, one which is high in unburned fuel and low in remaining oxygen.
	en.wikipedia.org /wiki/Oxygen_sensor (1720 words)

	SBE 43 Dissolved Oxygen Sensor
		The new sensor is a Clark polarographic membrane type in which careful choices of materials, geometry, and sensor chemistry are combined with superior electronics interfacing and calibration methodology to yield major gains in performance.
		Oxygen features are more precisely resolved, and the agreement in down-and-up profiles reduces the ambiguity about which should be locked to bottle Winklers.
		Even when oxygen concentration is constant, the normal range of ocean temperatures causes the output of earlier sensors to vary by a factor of two.
	www.uncwil.edu /CMSR/capefear/tech/SBE43do.htm (491 words)

	Oxygen Sensor - Oxygen Sensors - Partstrain.com
		Oxygen sensors, especially on modern vehicles are positioned in the engine’s exhaust manifold to detect whether the mixture of gasoline and air going to the engine is lean or rich.
		Once the oxygen sensor detected that the mixture is lean or rich, it will send a voltage signal to the engine management ECU computer, which in turn issues a command to the mixture control solenoid found in the carburetor to adjust the mixture before it enters the engine.
		Among the types of oxygen sensors used in vehicles are the single wire oxygen sensor and the heated oxygen sensor.
	www.partstrain.com /ShopByDepartment/Oxygen_Sensor (582 words)

	Oxygen Sensor (Site not responding. Last check: 2007-10-19)
		The mechanical drawing of this sensor shows that the sensor is designed to be mounted on the SCAMP and is bent such that it can be closely aligned with other sensors.
		This sensor thus conducts a current that is linearly proportional to the amount of dissolved oxygen in the solution outside the sensor.
		Sensor current is a linear function of dissolved oxygen concentration outside the sensor.
	www.pme.com /smanual/hardware6.htm (649 words)

	Techno’s “Know you car” Series #3 –
		The oxygen sensor (O2S) monitors the oxygen content of the exhaust gasses (in comparison to the outside air) and sends a message to the car’s computer to either add or subtract fuel from the air/fuel mixture.
		The chemically generated output range of the oxygen sensor is usually between 0 and 1.1 volts with a normal operating range between 0.2 to 0.7 volts.
		The effectiveness of an oxygen sensor is measured in the number of "O2 cross" counts.
	www.miata.net /garage/KnowYourCar/S3_O2.html (683 words)

	Pelican Technical Article: BMW 3 Series (E36) Oxygen Sensor Replacement
		The oxygen sensor is located in the exhaust system of the engine, and senses the oxygen content of the exhaust gases.
		The oxygen sensor produces a small voltage signal that is interpreted by the electronic control unit (ECU) of the fuel injection system.
		On the E36 318, the sensor is located in a very difficult to reach spot - you may have to use a special deep socket with a slit cut in the side to remove it (Figure 2).
	www.pelicanparts.com /bmw/techarticles/E36-O2_Sensor/E36-O2_Sensor.htm (970 words)

	Replace Oxygen Sensor
		Negatively charged oxygen ions in the exhaust are attracted to the platinum and reduce the voltage created by the exhaust heat.
		The 3 wire oxygen sensors are used to give power and ground to pre-heat the sensor so it starts working quicker, it has no effect after the sensor gets warmed up.
		The oxygen sensor is located on the pre-catalytic converter (or down-pipe if the pre-cat has been removed) next to the right front wheel well.
	www.rx7.org /Robinette/o2_sensor.htm (673 words)

	Oxygen Sensor Analyzer
		Most oxygen sensors are being replaced by guessing or by how many miles are on the vehicle, which can become expensive for your customers, with some cars with four 4 wire sensors close to $300 each, especially if it does not solve the problem.
		This tool can test the forward control oxygen sensors in less than 10 seconds each, after connection, making this test much faster than the official test, which requires injecting propane, and then capturing and analyzing the transient on a DSO when the throttle is snapped.
		Once proper oxygen sensor control is displayed and the oxygen sensor passes the test, the vehicle is likely to pass emission testing, except for potential EGR (NOx) or catalytic converter problems.
	www.lenehanresearch.com /oxygen_sensor_analyzer.htm (686 words)

	Oxygen Sensor Information
		The output of the sensor is usually between 0 and 1.1 volts.
		The sensor does not begin to generate it's full output until it reaches about 600 degrees F. Prior to this time the sensor is not conductive.
		Clamp the sensor in a vice, or use a plier or vice-grip to hold it.
	www.mr2.com /TEXT/O2_Sensor.html (1646 words)

	Oxygen Sensor
		The output of the sensor is usually between 0.2 and 0.7 volts, with a value of 0.45 volts when the mixture is stiochiometricly ideal.
		The Lambda sensor is a probe having a ceramic body (4) that is fitted inside a housing (1) which protects the ceramic body against mechanical influences and serves for the installation of the sensor.
		If the concentration of oxygen inside the probe differs from that outside the probe, an electrical voltage is developed between the two surfaces because of the special characteristics of the material used.
	members.surfbest.net /pidl/Cars/O2sensor.htm (2647 words)

	Howstuffworks "How does the oxygen sensor in a car work?"
		The sensor is part of the emissions control system and feeds data to the engine management computer.
		The goal of the sensor is to help the engine run as efficiently as possible and also to produce as few emissions as possible.
		The reason why the engine needs the oxygen sensor is because the amount of oxygen that the engine can pull in depends on all sorts of things, such as the altitude, the temperature of the air, the temperature of the engine, the barometric pressure, the load on the engine, etc.
	auto.howstuffworks.com /question257.htm (517 words)

	Oxygen sensor service Motor - Find Articles
		Even if you were able to find a motorist who knows what an oxygen sensor is, it's unlikely he'd be able to recognize the symptoms of a slow, worn-out or completely dead oxygen sensor.
		When an O2 sensor fails or is beginning to fail, the vehicle owner may come to you stating "I think it needs a tuneup." There's a certain logic to this, since the symptoms can be very similar to what we used to see when ignition parts were defective or worn.
		This type of sensor allows more precise monitoring and correction of the fuel mixture than was possible with conventional O2 sensors, and may receive more widespread use in the future.
	www.findarticles.com /p/articles/mi_qa3828/is_200307/ai_n9299385 (795 words)

	Oxygen Sensor
		The oxygen sensor detects the air-fuel mixture of a gasoline engine by measuring the amount of oxygen in the exhaust gas.
		The metal case of the sensor is grounded and is the return for the sensor's output.
		I think the material in the sensor is made to match the optimum air-fuel mixture, and the output of the sensor is pretty much on or off(too rich or too lean).
	www.bobblick.com /techref/projects/o2sensor/o2sensor.html (1980 words)

	KSBI-TV - Technology - Automotive Oxygen Sensor Turns 30
		The oxygen sensor for automotive use was pioneered by leading automotive supplier, Robert Bosch Corporation, as an essential weapon in the battle to rein in emissions.
		The automotive oxygen sensor measures the amount of oxygen in the exhaust and signals the engine control unit (ECU) to adjust the air/fuel ratio to near the ideal or stoichiometric mixture of 14:7:1, for maximum efficiency.
		Early oxygen sensors were the unheated "thimble" type, which took 2-4 minutes to reach operating temperature.
	www.ksbitv.com /technology/3899956.html (468 words)

	Daytona Sensors LLC - Tech FAQ WEGO
		It is important to understand that the wide-band sensor is measuring the apparent AFR based on the composition of the exhaust gas.
		The Bosch LSU 4 wide-band sensor element consists of a heater cell, conventional (narrow-band) oxygen sensing Nernst cell (with associated reference cell exposed to ambient air), and an oxygen pump cell.
		Under rich conditions, this oxygen is generated by electrochemical decomposition of water and carbon monoxide in the exhaust gas at the surface of the pump cell.
	www.daytona-sensors.com /tech_wego.html (1864 words)

	Oxygen Sensor
		An oxygen sensor is a measuring probe for determining the oxygen content of the exhaust gas.
		Since the amount of oxygen in the exhaust gas indicates precisely how complete the combustion of the air-fuel mixture in the cylinders is, it is also the best starting point for controlling the air-fuel ratio.
		A voltage is generated at the interface which is proportional to the relationship between residual oxygen in the exhaust gas and that of the surrounding air.
	www.longbeachmuffler.com /02sensor.html (347 words)

	BMW Oxygen Sensor - BMW World
		In this case, that something is your BMW Oxygen Sensor.
		Your BMW oxygen sensor has the all-important job of relaying the exhaust oxygen content back to your fuel injection computer.
		The oxygen sensor lets the computer know if more oxygen is necessary, since the catalytic converter actually carries on low-level combustion inside its walls.
	www.bmwworld.com /parts/bmw-oxygen-sensor-world.htm (226 words)

	Oxygen Sensor Testing
		Once you have seen this effect on a good sensor it is easily recognised so if you are into this type of diagnostics, test your bike before a fault is suspected to get experience.
		First - The sensor is earthed and referenced to earth via its outer case the exhaust pipe, engine block and battery - this is true even of 2 and 4 wire systems.
		A sluggish sensor or one that fails to respond to rich and lean conditions instantly, has to be replaced, they are not repairable.
	www.ibmwr.org /ktech/O2-sensor-testing.shtml (747 words)

	Oxygen sensor for the DrDAQ data logger
		Oxygen in air is measured using a galvanic cell sensor which connects to the external sensor sockets on the DrDAQ using the supplied three metre lead.
		However, gas sensors that respond to partial pressure are typically calibrated to read out in mole fraction of the gas in air, which has units of moles of oxygen (O2) per mole of air.
		This means that the oxygen sensor can be easily calibrated (provided you do not breathe on the sensor when it is being calibrated - our exhaled breath is about 17% oxygen.) When calibrated the oxygen sensor has an accuracy of 1%.
	www.drdaq.com /oxygen_sensor.html (320 words)

	Oxygen Sensor - Corvette Forum
		I was getting an oxygen sensor code, so I put a new one in, then started the car and got an ECM error, so I unhooked the battery to clear the code, now I need to restart it once I get my trans.
		The wires to the stock O2 sensor are a purple one from term 9 on the ECU (O2 Hi) and a tan one from term 14 (O2 Lo).
		What we've got is a 2 wire sensor with one wire to the computer and the other is the reference ground to the computer (also joined to the computer ground and a physical ground connection).
	forums.corvetteforum.com /showthread.php?t=509177 (2811 words)

	Oxygen Sensor
		The oxygen sensor is a spark plug shaped device that is screwed into the exhaust manifold.
		The heated oxygen sensor has a heating element incorporated into the sensor to aid in the warm up to the proper operating temperature and to maintain that temperature.
		Since the sensor generates low currents, good clean electrical connections at the sensor are a must.
	www.geocities.com /kuleshoff/Oxygen.htm (945 words)

	Oxygen Sensor: Apogee Instruments Inc.
		Being a galvanic cell type sensor, a small amount of oxygen is consumed in the reaction in order to produce the current flow and subsequent mV output.
		However, gas sensors that respond to partial pressure are typically calibrated to read out in mole fraction of the gas in air, which has units of moles of oxygen per mole of air.
		The sensor is resistant to 2.7 G of shock.
	www.apogee-inst.com /oxygen_sensor.htm (1326 words)

	Oxygen Sensor FAQ
		In response to the o2 sensor discussion, I thought I would post something that someone sent me. It is a faq type document that talks about how an o2 sensor works, and how to test it, and some other general stuff.
		sensor is active anytime it is hot enough, but the computer only uses this information in the closed loop mode.
		sensor is constantly in a state of transition between high and low voltage.
	www.visi.com /~rhayman/o2sensor.html (1834 words)

	Oxygen Sensor Replacement \| Advance Auto Parts (Site not responding. Last check: 2007-10-19)
		Putting in a fresh oxygen sensor is easy, not unlike changing a spark plug, although it may be a bit harder to get to in some cases.
		Their function is to tell the computer how to adjust the fuel delivery and timing to achieve the best possible burn in the combustion chambers, and they do that by reading the amount of oxygen in the exhaust system.
		Request a sensor that has a factory-style wiring connection instead of a "universal fit" model (which will require cutting and crimping wires in tight quarters) in order to save installation time.
	www.advanceautoparts.com /english/youcan/html/ccr/ccr20021201os.html (347 words)

	Oxygen Sensor
		The oxygen sensor on your car does exactly what the name implies: The oxygen sensor tests the exhaust gasses and determines how much residual oxygen is in the exhaust.
		The end result is that a fouled oxygen sensor causes the engine to run rich, which can then lead to catalytic converter failure.
		Likewise, the oxygen sensor has a lifespan that rarely exceeds 100,000 miles, so if your vehicle is past that mileage and still on its original O2 sensor, a replacement Denso oxygen sensor or Bosch oxygen sensor will likely improve your idle and your fuel economy.
	www.oxygensense.com (285 words)

	[No title]
		Either the oxygen sensor is degraded to the point that its response is too slow until it gets to a much hotter temp, or the thermoswitch is allowing the control box to lock onto the oxygen sensor output too early (even a good oxygen sensor needs to warmup first).
		The real check of the oxygen sensor involves the procedure in the Bentley manual to check the duty cycle operation of the fuel proportioning valve, which is not too difficult to do, but requires some fooling around with the fuel pump relay and a voltmeter or dwell meter.
		Disconnect the oxygen sensor electrical connection (inline with the sensor at the exhaust manifold), and measure the output voltage of the sensor using the DC millivolt scale of your voltmeter with respect to ground (engine block).
	mysite.verizon.net /janvdb/vw/Engine/oxysensor.html (7712 words)

	RDO (Optical Dissolved Oxygen Sensor)
		Electrochemical sensors (Clark, Galvanic) require sample stirring and are functionally limited by the durability of their membrane and electrode, while galvanic diffusion types offer characteristically slow response.
		Optical sensors may be affected in that the actual D.O. levels in the water near the sensing element can become locally elevated or depressed.
		Unlike electrochemical sensors which will need a replacement of the membrane and filling solution, followed by a calibration, the optical sensor can simply be cleaned and redeployed; the calibration is unaffected.
	www.in-situ.com /In-Situ/Products/TROLL9500/TROLL9500_RDO.html (1126 words)

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