Which Vehicles Require Automotive Urea?
2 Answers
Vehicles that use urea include: heavy-duty trucks and buses. Automotive urea refers to diesel exhaust fluid, primarily a liquid used in SCR (Selective Catalytic Reduction) technology to reduce nitrogen oxide pollution in diesel vehicle emissions. To meet annual exhaust emission standards, diesel vehicles are required to install an SCR system in their exhaust treatment. The automotive urea solution is used in the SCR system to treat nitrogen oxides in the exhaust. Automotive urea is a colorless, transparent liquid stored in a urea tank. When sensors detect nitrogen oxides in the exhaust pipe, they automatically spray a mist of automotive urea, which mixes with the nitrogen oxides and undergoes a redox reaction in the SCR catalytic converter, ultimately producing harmless nitrogen and water that are expelled.
After driving for so many years, I've noticed that mainly diesel engine vehicles require the use of automotive urea, especially heavy-duty trucks and buses. This is because these vehicles are equipped with SCR systems (Selective Catalytic Reduction technology) that use urea solution to reduce harmful nitrogen oxides in the exhaust, ensuring compliance with environmental standards. For example, when older diesel vehicles are upgraded to meet China VI emission standards, they almost always require urea. I've seen many friends who drive long-distance freight having to keep a urea tank handy and refill it regularly to avoid system warning lights. If not addressed in time, the vehicle might even experience speed limitations or shutdowns, which can be quite troublesome. Maintenance is simple—just buy a bottle of AdBlue and top it up yourself. Don't wait until you're on a long trip to find out it's low, as it could disrupt your journey. In short, logistics drivers and new diesel SUV owners need to pay extra attention to this.