What are the classifications of oxygen sensors?

[Janelle]

Oxygen sensors can be classified into: standard oxygen sensors, air-fuel ratio sensors, and nitrogen oxide sensors. The automotive oxygen sensor is a critical feedback sensor in the electronic fuel injection engine control system, playing a key role in controlling vehicle exhaust emissions, reducing environmental pollution, and improving the fuel combustion quality of the engine. Below is an introduction to these three types of oxygen sensors: 1. Standard Oxygen Sensor: Automotive oxygen sensors mainly include zirconia and titanium dioxide types. Both types can be further divided into heated and unheated versions, with most vehicles using the heated type. 2. Air-Fuel Ratio Sensor: The air-fuel ratio sensor can continuously measure the air-fuel ratio across the entire range from rich to lean mixtures. Compared to standard oxygen sensors, this type of sensor enables feedback control of the air-fuel ratio throughout the engine's operating range, achieving optimal fuel consumption, emissions, and performance in all conditions. 3. Nitrogen Oxide Sensor: The nitrogen oxide sensor is used to identify and check whether the function of the three-way catalytic converter is normal.