Oxygen sensor is one of the key components of electronic system of vehicle engine.The oxygen sensor is used to analyze exhausting gas composition

on the base of analysis of exhaust gas composition by oxygen sensor

the air-fuel ratio can be adjusted

in the purpose of improving efficiency of both fuel consumption and three-way catalyst system.Experiments show that the impact of Mn on the characteristics of oxygen sensor is discussed.Impurities in the fuel have negative effect on the performance of oxygen sensor.Mn would react with porous platinum of electrode of oxygen sensor after depositing on the surface of oxygen sensor

which causes the sensor malfunction.Consequently

the purifying efficiency of the exhausting gas is reduced.