Does the diesel BJ40 need to add urea?

[MacMarley]

bj40 diesel version does not need to add urea. Because it uses a particulate filter, it will burn and clean when accumulated to a certain extent. Main principle of automotive urea: Urea undergoes hydrolysis in aqueous solution at a temperature of 70-75 degrees Celsius. At temperatures below 30 degrees Celsius, urea recrystallizes from the aqueous solution. Each hydrolysis and crystallization cycle significantly improves its purity. Generally, using industrial-grade urea for one hydrolysis and crystallization cycle can meet the automotive urea standard requirements, with an output ratio of 1.5:1. Introduction to automotive urea: Heavy-duty trucks, buses, and other diesel vehicles must meet the National IV emission standards. For tail gas treatment, a suitable SCR system must be selected, and this system must use urea solution to treat nitrogen oxides in the exhaust gas. Therefore, automotive urea solution has become an essential product for heavy-duty trucks and buses to meet the National IV emission standards.