Why Do Vehicles Need Urea?

[DiBeau]

Adding urea to vehicles can optimize exhaust emissions. Vehicle urea is a consumable essential for SCR technology, used as a liquid to reduce nitrogen oxide pollution in diesel vehicle exhaust. The role of vehicle urea: It converts nitrogen oxides in vehicle exhaust into harmless nitrogen and water, enabling the vehicle to meet national exhaust emission standards. Hazards of not adding urea: First, it pollutes the environment. Diesel vehicles without urea can have extremely adverse effects on the ecological environment, which is also prohibited by national laws and regulations. Second, it damages the SCR injection system. Prolonged absence of urea may cause crystallization blockages in the nozzle, pipelines, and urea pump of the SCR system, or damage due to high temperatures. Third, it weakens engine power. This is not a direct result of not using vehicle urea, but because the engine's electronic control system cannot detect urea injection. When exhaust pollution exceeds standards, it forcibly limits the engine's torque output. Methods to eliminate the vehicle urea warning light: Replace the urea solution; replace the water heating valve; replace the urea pump and power supply module connector.