1
What is? Detecting oxygen concentration in the exhaust gas pipe
, and issued ECU feedback controls the fuel injection quantity by the ECU decrease fuel ratio of the mixture gas.
2
what’s the use?
For greater EFI engine exhaust purification efficiency, to reduce the formation of harmful substances in the exhaust gas, catalytic converters must be used. In order to catalytic converters to work effectively, it is necessary to control the precise air-fuel ratio, so that it is always close to the theoretical air-fuel ratio. The ECU determines an electric signal transmitted by the oxygen-fuel ratio sensor is low or high, and controls the fuel injection amount.
3
Principle:
[123 ] Nernst oxygen sensor utilizes the principle, which is a ceramic sensor for measuring oxygen potential in the automotive exhaust pipe, the oxygen concentration is calculated by the corresponding chemical balance principle, to monitor and control the combustion air-fuel ratio, to ensure product quality and emissions compliance measuring element. The oxygen sensor widely used in various combustion of coal, oil combustion, combustion furnace atmosphere control and the like, it is the best measurement of the combustion atmosphere, havingSimple structure, fast response, easy to maintain, easy to use, accurate measurement and so on. Using this sensor both measure and control the atmosphere combustion stability and improve product quality, but also to shorten the production cycle, saving energy.
4
reading: [ 123]
the oxygen sensor indirectly controls the fuel injection system of an automobile, if the oxygen sensor fails, the car will malfunction, a sudden increase in beat car, fuel consumption, there may be false positives due to the oxygen sensor signal, to be regular repair shop testing.