Understanding O2 Sensors And How They Work

Nowadays O2 sensors are among the most widely sold automotive parts throughout the world and an extraordinary variety of different categories of these products are now easily available online. As a matter of fact the variety is so enormous that you might find yourself lost in a sea of numerous more or less similar products and unless you have a very clear idea of the differences between them and also about your exact requirements – making the right choice can be extremely difficult.

The primary purpose of an oxygen measurement sensor is to measure the level of oxygen presence in the exhaust gas from the engine and provide a precise indication of the air-fuel ratio and combustion efficiency of the engine. If the amount of oxygen present in the exhaust gas is on a higher side then it indicates a lean mixture that may not only affect engine performance by creating problems like knocking and misfiring but it will also ultimately damage the engine considerably. On the other hand a low oxygen content measured by a heated oxygen sensor is the indication of a rich mixture resulting in reduced fuel economy and excess emission.

The present generations of oxygen sensors first measure the amount of oxygen present in the exhaust gas and then send a signal to the ECU or the Engine Control Unit for monitoring and adjusting the amount of fuel that the engine is getting. Thus these sensors help the ECU to maintain a fuel-air ratio that is closest to the optimum stoichiometric ratio for optimized performance of the automobile, improving fuel efficiency and minimizing emissions.

How these sensors work?

The oxygen measurement sensors those are now available are installed in such a way that one of its sensitive surfaces come directly in contact with the exhaust gas flow while another surface stays in contact with the outside air. Scientifically speaking, these sensors do not measure the concentration or amount of oxygen present in the exhaust gas but the difference between oxygen concentration in the exhaust gas and outside air. A voltage signal is generated depending upon this difference and a high voltage indicates a rich mixture. These voltage signals are continuously sent to the monitoring ECU so that the stoichiometric ratio can be maintained all throughout and the vehicle can perform at its optimum efficiency level.

How often you should be changing them?

How often you should change the o2 oxygen sensor is an important question faced by most car-owners so that optimum fuel efficiency and best engine performance can be achieved and in this regard different vehicle manufacturing brands have different recommendation. That means how often you should change the O2 sensors depends upon the vehicle you are driving and also a number of other factors like total mileage driven, the terrain on which the vehicle is mostly driven etc. As a car owner what you can do best is to get it regularly checked so that you know it is functioning properly and change it the first time you feel a change is required. For more information on this subject you can visit ECONOX.CH.

About The Author

Nathan Statham is an expert in oxygen sensing equipment and related devices who also likes to spread awareness in the masses about them through the articles and blogs he writes. He recommends Econox.ch as the best name to trust for high quality oxygen sensors online.

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