What is the purpose of adding urea to vehicles?

[DiMariana]

Adding urea is specific to diesel engines because diesel engines emit harmful nitrogen oxide (NOx) gases during operation, which are detrimental to both the atmosphere and human health. Long-term exposure to these gases can lead to respiratory diseases. Reasons for adding urea: To mitigate the harmful effects of these gases on the atmosphere and humans, urea is utilized. This involves a catalytic reaction where urea reacts with the nitrogen oxides emitted by diesel engines. A chemical reaction occurs, converting the nitrogen oxides into nitrogen and water, both of which are harmless to the atmosphere and human health. Consequences of not adding urea: Failure to use urea, or using urea of poor quality or insufficient purity, can cause the vehicle's engine to automatically reduce speed. Additionally, it can contaminate the catalyst in the SCR (Selective Catalytic Reduction) catalytic reaction tank, leading to severe consequences.