Briefly describe how an oxygen sensor works
2 Answers
Under certain conditions, the oxygen concentration difference between the inside and outside of zirconia generates a potential difference, and the greater the concentration difference, the larger the potential difference. Here is more information about oxygen sensors: 1. Advantages: Currently the best method for measuring combustion atmosphere, featuring simple structure, rapid response, easy maintenance, convenient use, and accurate measurement. 2. Brief description: The oxygen sensor is a standard configuration in automobiles, using ceramic sensing elements to measure the oxygen potential in the vehicle's exhaust pipe. Based on the principle of chemical equilibrium, it calculates the corresponding oxygen concentration to monitor and control the combustion air-fuel ratio, ensuring product quality and compliance with exhaust emission standards as a measuring component.
With over a decade of hands-on experience in the automotive repair industry, I've dealt extensively with oxygen sensors. These components are installed near the exhaust pipe and contain two electrodes: one exposed to exhaust gases and another connected to ambient air. The difference in oxygen concentration generates a small voltage signal: around 0.1V indicates a lean fuel mixture, while readings above 0.9V signal excessive richness. This signal is transmitted to the engine control unit, allowing real-time adjustment of fuel injection to maintain the ideal air-fuel ratio of 14.7:1. This optimization ensures complete combustion for improved fuel efficiency while protecting the catalytic converter and reducing emissions. Sensor failure typically manifests as increased fuel consumption or illuminated warning lights, necessitating cleaning or replacement. I recommend biennial inspections to prevent minor issues from escalating into major repairs, ensuring smooth and worry-free daily driving.
