AFR sensor: Air- fuel ratio, Zirconium, Oxygen sensor, Motor vehicles, Stoichiometric, Engine Control Module, Gasoline engine - Couverture souple

 
9786131775604: AFR sensor: Air- fuel ratio, Zirconium, Oxygen sensor, Motor vehicles, Stoichiometric, Engine Control Module, Gasoline engine

Synopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The AFR sensor is an air-fuel ratio sensor that is slowly replacing the Zirconium oxygen sensor (O2 sensor) in modern motor vehicles. The early introduction of the oxygen sensor came about in the late 1970’s. Since then Zirconia has been the material of choice for its construction. The Zirconia O2 sensor produces its own voltage, which makes it a type of generator. The generated varying voltage shows up on the scope as the familiar 1 Hz sine wave, when in closed loop control. The actual voltage that is generated is the difference between the O2 content of the exhaust and that of the surrounding ambient air. The stoichiometric air-fuel ratio or the mixture of air-to-fuel equal to 14.7:1 is theoretically the best mixture ratio for gasoline engines. This is the theoretical air -to- fuel ratio at which all of the fuel will react with all of the available oxygen resulting in complete combustion. At or near this ratio, the combustion process produces the best balance between power and low emissions. At a stoichiometric air-fuel ratio (14.7:1), the generated O2 sensor voltage is about 450 mV.

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Présentation de l'éditeur

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The AFR sensor is an air-fuel ratio sensor that is slowly replacing the Zirconium oxygen sensor (O2 sensor) in modern motor vehicles. The early introduction of the oxygen sensor came about in the late 1970’s. Since then Zirconia has been the material of choice for its construction. The Zirconia O2 sensor produces its own voltage, which makes it a type of generator. The generated varying voltage shows up on the scope as the familiar 1 Hz sine wave, when in closed loop control. The actual voltage that is generated is the difference between the O2 content of the exhaust and that of the surrounding ambient air. The stoichiometric air-fuel ratio or the mixture of air-to-fuel equal to 14.7:1 is theoretically the best mixture ratio for gasoline engines. This is the theoretical air -to- fuel ratio at which all of the fuel will react with all of the available oxygen resulting in complete combustion. At or near this ratio, the combustion process produces the best balance between power and low emissions. At a stoichiometric air-fuel ratio (14.7:1), the generated O2 sensor voltage is about 450 mV.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.