What is the principle of burning urea?

[AutumnDella]

The principle of burning urea: Urea is injected into the automobile exhaust pipe through the urea tank injection system, where it undergoes a chemical reaction with the exhaust gas of diesel vehicles, converting the waste gas produced by the vehicle into water and nitrogen, thereby achieving the goal of energy saving and emission reduction. The use of urea is intended to reduce CO and NO in the exhaust gas, converting these two gases into harmless CO2 and NO2. After urea injection, it forms a mist and undergoes a redox reaction with the high-temperature exhaust gas, with the oxidized portion being completely oxidized substances. More details are as follows: 1. Modern diesel vehicles emit polluting nitrogen oxide gases during operation, which are harmful to the atmosphere and human health. Long-term exposure to these gases can lead to respiratory diseases. To reduce the emission of these gases and minimize their harm to human health, the government has mandated the use of urea in diesel vehicles. 2. For some vehicles, if urea is not used, the power of the vehicle may weaken, and the amount of exhaust gas produced during driving may increase. For example, a National V emission standard diesel vehicle, when fully loaded, consumes about 10kg of urea per 1,000 kilometers traveled.