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Product Description
1. Installation location: Cars are usually equipped with front oxygen sensors and rear oxygen sensors. The front oxygen sensor is installed at the upstream position of the engine exhaust pipe, which is used to monitor the combustion situation in the engine combustion chamber and help control the engine combustion process. The post oxygen sensor is installed at the downstream position of the exhaust pipe to monitor the exhaust emission and help monitor and control the exhaust emission.
2. Function: The front oxygen sensor is mainly used to monitor the oxygen content in the engine combustion chamber and help the engine control system adjust the fuel mixture ratio to ensure the combustion efficiency and performance. The post-position oxygen sensor is mainly used to monitor the oxygen content in the exhaust gas and help to monitor whether the exhaust gas meets the environmental protection standards.
3. Working principle: Pre-oxygen sensor monitors the oxygen content in the combustion chamber and feeds it back to the engine control system to adjust the fuel mixture ratio; The rear oxygen sensor monitors the oxygen content in the exhaust gas and feeds it back to the emission control system to ensure that the exhaust gas meets the environmental protection standards.
4. Failure impact: The failure of the front oxygen sensor will lead to the decline of engine performance and fuel economy; The failure of the rear oxygen sensor will lead to excessive exhaust emissions and the failure of the vehicle to pass the emission test.
Generally speaking, the front oxygen sensor is mainly used to control the engine combustion process, and the rear oxygen sensor is mainly used to monitor the exhaust emissions. They are different in installation position, function and working principle, but they are both vital sensors in engine control system, which play an important role in vehicle performance and environmental protection emissions.
