Take the BMW 6-cylinder engine as an example: Exhaust Catalyst Converter Oxygen Sensor 2 is the 4th, 5-cylinder, 6-cylinder shared three-way catalytic converter Sensor in front of the oxygen sensor while the Exhaust Catalyst Converter Oxygen Sensor is the first cylinder , 2-cylinder, 3-cylinder shared three-way catalytic converter in front of the oxygen sensor. The oxygen sensor is a controlled oxygen sensor, which is responsible for over-air conditioning. It can accurately detect the oxygen concentration in the exhaust gas, thus calculating the combustion chamber of the fuel air mixing ratio.

   The oxygen sensor after the exhaust gas catalyst converter monitors the function of the regulated oxygen sensor and monitors the exhaust gas catalyst converter. The control type oxygen sensor uses a broadband oxygen sensor, which uses a wideband oxygen sensor to continuously measure the fuel-air ratio (continuous characteristic line) between 0.8 and 2.5V. The broadband oxygen sensor operates at Fuel Rail Pressure Sensor a lower heating power than conventional oxygen sensors. In addition, the broadband oxygen sensor can be faster to get ready.

  Oxygen sensor is a common oxygen sensor, the principle is to compare the exhaust gas and atmospheric oxygen concentration difference, when the oxygen content in the exhaust gas is high, the concentration difference is small, the voltage value is small, close to 0V; when the oxygen content in the exhaust gas Low, the concentration difference is large, the voltage value is high, close to 1V; when the concentration difference changes, the voltage value will change between 0 ~ 1V. The current oxygen sensor failure, the engine Pressure Sensor will work in the open loop, the engine power, economy and smooth operation will be affected.