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Nairaland Forum / Nairaland / General / Car Talk / Oxygen Sensor (1068 Views)
Missing Catalyst Converter And Oxygen Sensor Doesn’t Consume Fuel / Honda Civic 2007 Air Fuel Ration Sensor & Heater Oxygen Sensor Needed / Need Help Sourcing Oxygen Sensor Part Number (2) (3) (4)
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Oxygen Sensor by Primeauto(m): 5:01pm On Apr 03, 2019 |
Automotive oxygen sensors, colloquially known as O 2 ("ō two" ![]() The sensor does not actually measure oxygen concentration, but rather the difference between the amount of oxygen in the exhaust gas and the amount of oxygen in air. Rich mixture causes an oxygen demand. This demand causes a voltage to build up, due to transportation of oxygen ions through the sensor layer. Lean mixture causes low voltage, since there is an oxygen excess. Modern spark-ignited combustion engines use oxygen sensors and catalytic converters in order to reduce exhaust emissions . Information on oxygen concentration is sent to the engine management computer or engine control unit (ECU), which adjusts the amount of fuel injected into the engine to compensate for excess air or excess fuel. The ECU attempts to maintain, on average, a certain air-fuel ratio by interpreting the information gained from the oxygen sensor. The primary goal is a compromise between power, fuel economy, and emissions, and in most cases is achieved by an air–fuel ratio close to stoichiometric . For spark-ignition engines (such as those that burn gasoline or LPG , as opposed to diesel ), the three types of emissions modern systems are concerned with are: hydrocarbons (which are released when the fuel is not burnt completely, such as when misfiring or running rich), carbon monoxide (which is the result of running slightly rich) and NO x (which dominate when the mixture is lean). Failure of these sensors, either through normal aging, the use of leaded fuels, or fuel contaminated with silicones or silicates, for example, can lead to damage of an automobile's catalytic converter and expensive repairs.
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Re: Oxygen Sensor by slex(m): 6:04am On Apr 04, 2019 |
Good read |
Re: Oxygen Sensor by Victoraguwa: 7:00am On Apr 04, 2019 |
do you sell oxygen sensor for 2002 Honda civic? |
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