Does the diesel BJ40 need to add urea?
2 Answers
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.
Of course, the diesel BJ40 needs urea, especially those models meeting China V and VI emission standards. Nowadays, diesel vehicles rely on urea to treat exhaust, mainly to convert harmful nitrogen oxides into harmless water and nitrogen. If you don't add it, the vehicle will limit torque and power, making driving particularly frustrating. Our fleet has several BJ40s, and experience tells me that the vehicle will immediately alert when the urea tank is empty. Usually, there's a blue urea light on the dashboard reminding you to refill. I usually use dedicated automotive urea fluid bought from supermarkets, with a 10L bucket lasting about 2000 kilometers. Every time I refuel, I check the urea level and keep it above 1/3 for safety. A special reminder: don't add tap water to the urea tank, as it can damage the SCR system, and repairs can be very expensive.
