What is the car urea solution?
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Car urea refueling machine is what?
Car urea is a necessary additive for SCR. The engine is the post-processing technology of SCR to meet the national five emission standard so the car urea solution is also essential for driving.
Urea is a urea solution with a concentration of 32.5% and a solvent of ultra-pure water. Its raw materials are urea crystals and ultra-pure water.
Trucks that meet the country's five emissions standards have SCR systems installed in the exhaust treatment which must be treated with a urea solution to the nitrogen oxide in the exhaust.
Therefore the vehicle urea solution is a necessary product for the truck to meet the national four emission standards and above vehicles.
High-quality car urea solution transparent and pure the color is pale blue the taste is a light ammonia flavor.
If the color is yellow or the solution is cloudy or there are impurities and foreign objects in the solution ammonia flavor is not acceptable. Please use it carefully.
The amount of urea used in the use of the car is usually 5% of the vehicle fuel which is 50L of urea solution which can travel 3000 km without refuelling. At this point the car owner often needs to carry 5l-20l light urine solution in case of emergency refueling.
The storage should avoid direct sunlight the temperature is longer than 25 which will cause the urea to decompose or vaporize the water causing the deterioration of the urea solution in the car so the storage environment should not be higher than 25.
If the urea solution is lower than -11 thermal insulation measures should be taken.
When the urea solution solidifies the volume will increase by about 7% when it is solidified. Therefore sufficient storage space should be reserved at low temperature. At present SCR system becomes the standard of the five diesel vehicles in China and the "selective catalytic reduction reaction" is deeply popular. After a period of time the catalytic efficiency of SCR urea system will gradually decrease and the most effective way to improve its catalytic efficiency is to maintain the urea system.
The following phenomena can reduce the catalytic efficiency of urea system:
The urea system works for a long time.
2. The use of inferior urea leads to blockage of pipes crystallization of the nozzle crystallization of exhaust pipes and the failure of catalyst poisoning.
3. Improper method of adding urea solution leads to dust and impurities.
4. The use of oil quality is substandard.
5. The urea system was not fully emptied after the car was extinguished.
The result of irregular maintenance is: 1. Urea pump damages 2. The urea tube crystals are blocked 3. Nitrogen oxide sensor data abnormal 4. Temperature sensor failure 5.
