Introduction
The zirconium oxide oxygen sensor we product,which has steady and reliable output signal and the strong anti-jamming performance,is used for controlling air/fuel ratio,improving fuel economy,minimizing exhaust emission and ensuring peak engine performance.
Principle
The exhaust emission is of severe pollution to atmosphere.To minimize exhaust emission,it is only plssible to use three-way catalytic converters,Only if unleaded gasoline is used and combustion is as complete as possible do these converters operate efficiently.
The oxygen sensor is located in the exhaust manifold.The outside surface of the ceramic measuring tube protrude into the gas flow,and the inner surface contacts with the utside air.A voltage is generated at the interface due to the oxygen difference in the two electrodes.
The voltage is processed by ECU(electronic control unit)into a control sin\gnal for influencing the air-fuel mixture throught controllale fuel injection.By providing closed loop control of the mixture,it becomes possible to use three-way catalytic converters to achieve the maximum reduction in exhaust emission.In addition,In addition,the engine runs smoother and is more fuel-efficie
Constitution
3/4 leads oxygen sensor consits of a Zirconia's tube.A rod heater,sealing elements holders signal output wires and a connector.
The irconia's tube mounted in the cavity with a rod heater is the key component.Its surfaces are provided with electrodes made of a gas-permeable platinum layer.A porous ceramic coating has been applied to the side exposed to the exhaust gas.This coating prevents contamination of the electrode surface by combustion residue in the exhaust gas for a longer life.
Technical Specifications
1、Working temperature:250-900℃
2、Rated voltage of heater:12V
3、Inner resistance of sensor(working condition): ≥30MΩ
4、Insulation resistance: ≤250Ω
5、A/F ratio: 12≤A/F≤17
6、output voltage: 0-1000mV
7、Response time:﹤150ms
8、Life time:1.0 ×105Km(when unlesded gasoline used)
Application Range
All kinds of automobiles using EUC
Overall Dimension
