What is the Function and Malfunction of an Oxygen Sensor?

[PaisleeAnn]

Oxygen sensor's functions are: 1. To measure whether there is excess oxygen in the exhaust after engine combustion, converting the oxygen content into a voltage signal transmitted to the engine computer, enabling the engine to achieve closed-loop control targeted at the excess air factor; 2. To ensure that the three-way catalytic converter has conversion efficiency for all three pollutants in the exhaust—hydrocarbons, carbon monoxide, and nitrogen oxides—thereby transforming and purifying emission pollutants. The malfunctions of an oxygen sensor are: 1. Unstable idle speed and excessive fuel consumption; 2. Significant damage to the oxygen sensor can lead to insufficient engine power, sluggish acceleration, and black smoke from the exhaust. Oxygen sensors are used in industries such as petroleum, chemical, coal, metallurgy, papermaking, firefighting, municipal, pharmaceutical, automotive, and gas emission monitoring.