An oxygen sensor (or lambda sensor) is an electronic device that measures the proportion of oxygen (O2) in the gas or lquid being analysed. tmakes modem electronic fuel injection and emission control possible.They help determine,in real time , if the ar-fuel ratio of a combustion engine isrich or lean. Since oxygen sensors are located in the exhaust stream, they do not directly measure the air or the fuel entering the engine but wheninformation from oxygen sensors is coupled with information from other sources it can be used to indirectly determine the ailr-fuel ratio. Closed oopfeedback-controlled fuel injection varies the fuel ijector output according to real-fime sensor data rather than operating with a predetermined (open-loop)fuel map. In addition to enabling electronic fuel injection to work efficiently, this emissions control echnique can reduce the amounts of bothunburnt fuel and oxides of nitrogen entering the atmosphere.
Sanxin offers 227 types oxygen sensor for the most popular European,American and Asian car models.
