An oxygen sensor, often known as an O2 sensor, is a tool that measures the quantity of oxygen within the exhaust gases of an inner combustion engine. This data is utilized by the engine’s digital management unit (ECU) to regulate the air-fuel ratio, which is the ratio of air to gas within the engine’s combustion chamber. The right air-fuel ratio is essential for guaranteeing that the engine runs effectively and produces the correct quantity of energy.
There are two fundamental forms of O2 sensors: heated and unheated. Heated O2 sensors are utilized in most fashionable automobiles. They’re heated to a excessive temperature, which permits them to achieve their working temperature shortly and to reply shortly to modifications within the exhaust gasoline composition. Unheated O2 sensors are utilized in older automobiles. They don’t have a heating factor, in order that they take longer to achieve their working temperature and will not be as conscious of modifications within the exhaust gasoline composition.