If you want to understand automotive crystallization, you must first understand why automotive urea crystallizes

1. The production of automotive urea is made by blending automotive urea raw materials with ultrapure water. If When vehicle urea is placed in a dry environment, crystals will precipitate after the water evaporates;

2. We use vehicle urea solution during use, and its active ingredients decompose at high temperatures. The ammonia gas reacts with the nitrogen oxides in the exhaust gas to control the exhaust gas;

3. Car urea contains colloidal substances such as biuret and triuret. This colloidal substance Continuous high temperatures can easily cause cyanuric acid to crystallize and clog the nozzle. Ultra-pure filtration technology is used to filter, effectively remove colloidal substances such as biuret and triuret, and delay the appearance of automotive urea crystals;

Urea nozzle crystals are clogged

4. Automobile urea Crystallization will occur in all cases. The use of high-quality automotive urea can effectively delay the occurrence of crystallization, but at the same time, the vehicle SCR system must be maintained;

5. When the vehicle stalls, do not Immediately cut off the power supply of the entire vehicle and allow a certain amount of time to purge the SCR pipeline system, allowing the vehicle urea solution in the pipeline to purge and flow back to prevent obstruction. The entire purging process takes about 30-120 seconds.