Do Diesel Vehicles Need to Add Urea?

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Diesel vehicles must add urea. If urea is not used, the vehicle's engine will automatically decelerate. Additionally, if the urea purity is insufficient or of poor quality, it can also cause the engine to automatically decelerate. Here is more information about urea: 1. Urea is the common name, with the formal name being Diesel Exhaust Fluid (DEF). Other names include vehicle urea, automotive urea, and vehicle environmental urea. 2. Urea is a consumable required in SCR (Selective Catalytic Reduction) technology. SCR technology was developed by engine manufacturers to meet environmental regulations. SCR stands for Selective Catalytic Reduction Technology. 3. Urea is a liquid used in SCR technology to reduce nitrogen oxide (NOx) pollution in diesel vehicle exhaust. It consists of 67.5% deionized water and 32.5% high-purity urea. In the SCR system of diesel vehicles, urea catalyzes the reduction of NOx in the exhaust into harmless nitrogen (N2) and water, which are then expelled. 4. Under normal conditions, urea is harmless to humans. However, urea decomposes into ammonia gas at high temperatures. Prolonged exposure to ammonia gas may lead to symptoms such as skin pigmentation or ulcers.