Do Diesel Vehicles Need to Add Urea?
2 Answers
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.
I've been driving a diesel pickup for about seven or eight years and know that it requires AdBlue, that blue liquid used specifically for treating exhaust emissions. At first, I didn't understand. Once, a yellow warning light came on the dashboard displaying "AdBlue low," and the truck became really sluggish, accelerating slowly when I pressed the gas pedal. I went to a repair shop, and the mechanic said the AdBlue was almost empty, so the system automatically limited power to protect the environment. Now, I've developed a habit of adding a bottle to the AdBlue tank every 5,000 kilometers or so. A jug isn't expensive—just a few dozen yuan—and it saves me the hassle of speed limitation. If you skip it, the catalytic converter can get clogged, and repairs cost even more. Actually, many modern diesel vehicles are designed this way to meet emission standards, and the owner's manual also reminds you to add it. Don't underestimate this little thing—proper maintenance keeps your vehicle trouble-free and even saves fuel.
