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.
1. What is the use of the oxygen sensor
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 work effectively catalytic converter, air-fuel ratio control precision is necessary, so that it is always close to the theoretical air-fuel ratio.
ECU determines the oxygen sensor transmitting electrical signals of high or low fuel ratio, and controls the fuel injection amount.
2. Oxygen Sensor Principle
Nernst oxygen sensor utilizes the principle, which is a measure of the oxygen potential in the automobile exhaust duct using a ceramic sensitive element, calculated from the principle of chemical equilibrium corresponding to the oxygen concentration, to monitor and control the combustion air-fuel ratio, to ensure product quality and emissions compliance measuring element.
Oxygen sensors widely used in various coal combustion, combustion of oil, gas combustion furnace atmosphere control and the like, it is the best measurement of the combustion atmosphere, is simple in structure, rapid in response, is easy to maintain, easy to use, measuring accurate.
The use of combustion sensor for measuring and controlling the atmosphere both stability and improve product quality, but also to shorten the production cycle, saving energy.
3. Read the oxygen sensor associated
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 detected regular repair shop.