Oxygen sensors are devices installed on engines to reduce exhaust pollution. It can also be described as a filter for car tail gas, which is an essential original for oxygen sensors in today's heavy fog. Is it not interesting to know that this magical device has the advantages of simple structure, responsiveness, ease of maintenance, ease of use and energy conservation?
An oxygen sensor is a sensor used to detect oxygen concentrations in an equipment's exhaust and to send feedback signals to the eu, which then controls the increase or decrease in the oil spray volume of the oil dispenser, thus controlling the air combustion ratio of the mixture to the theoretical value。
It works in the same way as dry batteries, and the oxidation element in the sensor acts like electrolyte. The underlying principle is that under certain conditions (high temperatures and platinum catalytic), the difference in the level of power is created by the difference in oxygen from both the inside and the outside side of the oxidation, the greater the difference in the concentration. The oxygen content in the atmosphere is 21 per cent, and the flue gases following the combustion of concentrated mixed gases are virtually non-oxygen, and the exhaust gases generated by the combustion of rare mixed gases or by fire-deficient gases contain more oxygen, but are still much less than the oxygen in the atmosphere。
At high temperatures and with platinum catalytic, negative oxygen ion adsorbs on the internal and external surfaces of the oxidized ion. Because there is more oxygen in the atmosphere than there is in the exhaust gas, there is more negative ion adsorption on one side of the tube than on one side of the exhaust gas, and the difference in the concentration of the ion on both sides creates an electric dynamic. A high voltage (0) is generated between electrodes at low oxygen concentrations on one side of the pipe exhaust gas. 6-1v) the voltage signal was sent to the euu for magnification, which considered the high voltage signal to be a concentrated mixture of gas and the low voltage signal to be a thin mix of gas。
Based on the voltage signal of the oxygen sensor, the computer is diluted or enriched by the best air-fired ratio of the theory as close as possible to 14. 7:1. Aerobic sensors are therefore key sensors for electronic control of fuel fuel measurements. Aerobic sensors can only give full expression to their properties at high temperatures (with end levels above 300°c) and can export voltage. It reacts most rapidly to changes in mixed gases at about 800°c, and this characteristic changes significantly at low temperatures。
Oxygen sensors also have their disadvantages, but they are far more profitable than the vices, not only to mitigate the current deterioration of the environment, but also to protect our health and make the oxygen that we call in cleaner。
