Audi vehicles will not be considered as reliable and high performance if not for its high quality parts that comprise the whole vehicle assembly. Audi vehicles are tuned for excellent performance and operation in various driving situations and different weather conditions. They include premium quality engine parts, exhaust parts, and other interior and exterior parts. These parts have different functions which contribute greatly to the overall performance of the Audi vehicle. But there is one car part which is especially designed to feed data to the engine management computer of the Audi vehicle and that is the Audi oxygen sensor.

The main function of the Audi oxygen sensor is to contribute to the performance of the engine so as it will only have as few emissions as possible. Basically, gasoline engine needs oxygen in order to burn gasoline. And to do this effectively, a perfect ratio should be achieved which 14.7:1. Take note that not all fuels have the same ratios; it all depends on the amount of carbon and hydrogen found in a given amount of fuel.

If the perfect ratio is not achieved, which means the mixture is either too lean or too rich, there can be poor engine performance and can even lead to serious car damage. It is considered a rich mixture if there is less air than the perfect ratio, and so there will be fuel left for combustion. This is not good since the unburned fuel creates pollution. Lean mixture, on the other hand, is a mixture with more air than the perfect ratio. Since there is an excess in oxygen, more nitrogen-oxide pollutants can be produced, thus this can lead to ineffective engine performance. Therefore, the purpose of the Audi oxygen sensor is to detect these lean and rich mixtures. This is positioned in the exhaust pipe and it includes a mechanism which involves a chemical reaction that generates a voltage. The computer in the engine looks at this voltage in order to determine if the mixture is lean or rich. Then it adjusts this amount of fuel which enters the engine accordingly.

The main reason why the engine needs the oxygen sensor is because the amount of oxygen that the engine can pull in depends on many things. These include the temperature of the air, the altitude, engine's temperature, barometric pressure, and engine's load. So, if the oxygen sensor fails, how can the engine's computer possibly determine a rich or lean mixture depending on all these?

With this importance of the oxygen sensor, it is therefore necessary to keep it in good condition at all times. And if your oxygen sensor fails and needs replacement, you can easily find one here at Parts Train, where a wide variety of car parts and accessories are available at affordable prices.