What is the function of vehicle urea at gas stations?
2 Answers
Vehicle urea is used when nitrogen oxides are detected in the exhaust pipe. The urea tank automatically sprays diesel exhaust fluid (DEF), which then reacts with nitrogen oxides in the SCR catalytic reaction tank through a redox process, producing non-polluting nitrogen and water vapor that are expelled. Below is an introduction to vehicle urea-related content: 1. Kelas: The first professional domestic brand specializing in vehicle urea production, known for stable and reliable quality, with self-built sales channels nationwide. 2. Yuetai Hailong: A brand under Sinopec, commonly seen in 20kg products, available at various Sinopec gas stations. The product quality is inconsistent, but the price is relatively low. 3. Kunlun Star: A brand under PetroChina, with weaker distribution channels compared to Sinopec, but the product quality is decent and the price is moderate.
As an environmentally conscious driver, seeing diesel exhaust fluid (DEF) at gas stations reminds me of its crucial role in reducing vehicle emissions. Primarily used in diesel vehicles, especially trucks and buses, DEF works through a system called SCR (Selective Catalytic Reduction) to convert harmful nitrogen oxides in exhaust into harmless nitrogen and water vapor. Without it, these pollutants released into the air would worsen smog, degrade air quality, and even contribute to climate warming effects. From my experience, gas stations provide DEF for convenient refills, typically needed every month or two—not a hassle. More importantly, neglecting its use may lead to emission violation fines and reduced engine efficiency, ultimately costing more long-term. I recommend making DEF checks a habit—small actions like this create meaningful change for our planet's health.
