What is an oxygen sensor and is it important when driving?

The increase of automobile fuel consumption may or may not be caused by the oxygen sensor; In fact, with the use, the engine consumes too much oil, and the problem of oxygen sensor is only one of them. Cars, like many other industrial products and electrical appliances, will continue to increase power consumption with continuous use, which is an inevitable and almost irreversible phenomenon! The function of the oxygen sensor is to detect the oxygen content in the exhaust gas discharged from our engine after combustion, and use the detected oxygen content to inject the fuel concentration. If our oxygen sensor is normal, we can accurately adjust the fuel injection concentration. When the oxygen sensor is damaged, there are also methods. When our oxygen sensor is damaged, the standard fuel injection concentration is stored in the computer.

So when our fuel consumption increases, I suggest you check whether the spark plug should be replaced. The car is getting more and more expensive, which means that the car has been driving for some time, and it is still 5- 10. Otherwise, it is at least 65438+ 10,000 kilometers. We cannot generalize about this kind of car. We should find out the problem according to the actual situation. As for the oxygen sensor you mentioned, it is only one of the reasons, not the main reason. If our car has traveled 50,000 kilometers and the spark plug has not been replaced, the fuel consumption will increase obviously, which is probably caused by the damage of the spark plug. Therefore, the increase of fuel consumption is not necessarily caused by the damage of oxygen sensor, because after the damage of oxygen sensor, there is a set of standard fuel injection pulse width in the engine, which is not easy to cause the problem of fuel consumption increase.

Therefore, with the continuous increase of service cycle and mileage, the increase of fuel consumption is normal; There is no need to really change the parts or reasons. To be honest, even if the oxygen sensor is not broken, the fuel consumption of the car will be higher and higher; Sometimes, car owners feel that fuel consumption is getting higher and higher. When they arrive at the repair shop, it is suggested to replace the oxygen sensor and clean up the carbon deposit. As a result, they repaired it, but the fuel consumption still could not be reduced. This is a common phenomenon! The biggest reason for fuel consumption is that the working environment or conditions of the engine have changed. The culprit is usually the driver. Is there a reason for violent driving? A motorcycle can drive 200 kilometers of oil with one throttle and one brake. Oxygen sensors are really not that easy to break down.

Generally speaking, as long as the porcelain element in the original oxygen sensor is not damaged and the resistance element is not leaked, the oxygen sensor only needs to be cleaned, and there is no need to replace the new oxygen sensor (the best scheme is good money), and the cleaning method is not complicated. Ferric chloride with the concentration of 12% can be combined with hydrochloric acid (hydrochloric acid can be replaced by toilet cleaner). Generally speaking, the oxygen sensor after cleaning can be restored to a good state of use; In short, the increase in fuel consumption of used cars is not necessarily a problem with oxygen sensors. On the contrary, the problem of oxygen sensor has a series of consequences, not only the increase of fuel consumption! There are other reasons that need to be combined with the maintenance of the owner. If the maintenance is not diligent, there may be reasons such as engine carbon deposition, unclear throttle of 65438+ 10,000 kilometers, and uneven tire polishing. You can't know until you really touch the car. There is another situation, that is, the atomization of our fuel injector is not good, that is to say, the fuel injector is blocked, which needs to be solved by cleaning the oil circuit as we said before. Therefore, there are many reasons for the increase of automobile fuel consumption, and the oxygen sensor has little influence on fuel consumption.