Oxygen Sensor 11787577666 For BMW E71 F02

There are some differences between the rear oxygen sensor and the front oxygen sensor in working principle, mainly in their installation positions and monitoring objects:

1. Installation position: The front oxygen sensor is usually installed at the upstream position of the engine exhaust pipe, that is, the engine combustion chamber; The oxygen sensor is usually installed downstream of the exhaust pipe, that is, at the end of the exhaust system.

3. Feedback signal: The feedback signal of the front oxygen sensor is mainly used to adjust the fuel mixture ratio of the engine to improve the combustion efficiency and performance.

4. Working principle: the front 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 post-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.