What is the main function of urea solution?

[AngeloMarie]

Urea solution is mainly used to reduce nitrogen oxides in vehicle exhaust, lower the pollution level of exhaust gases, and help vehicles meet the national emission standards. Through the intelligent control of the SCR system, the vehicle will not start if the urea solution in the storage tank is insufficient. To ensure normal operation of the vehicle, an adequate supply of urea solution should be maintained. Vehicle urea solution is an essential product for heavy-duty diesel vehicles to meet the National IV emission standards. It refers to an aqueous urea solution with a urea concentration of 32.5% and a solvent of ultra-pure water, made from urea crystals and ultra-pure water. For heavy-duty trucks, buses, and other diesel vehicles to achieve the National IV emission standards, an appropriate SCR system must be selected for exhaust treatment, and this system must use urea solution to treat nitrogen oxides in the exhaust gases.