What is SCR technology?

"SCR" is the abbreviation of Selective Catalytic Reduction Technology, which is a technology used for the after-treatment of diesel vehicle exhaust to reduce harmful nitrogen oxide emissions from vehicles. The reducing agent used in the SCR technology is vehicle urea solution. Almost all major engine manufacturers need to use this technology to meet the emission requirements in the new regulations on nitrogen oxide emissions.

The main components of the SCR system:

-SCR catalyst

-Urea solution filling device for vehicle

-Urea tank for car

-Vehicle urea injection control device.

What is the working principle of the car urea solution in the SCR system?

The car urea solution is sprayed from the urea nozzle into the SCR catalytic system, and is atomized at high temperature and converted into ammonia (NH₃) and carbon dioxide (CO₂. Under the action of the catalyst, nitrogen oxides (NOx) and ammonia are in the exhaust pipe The reaction proceeds to convert harmful nitrogen oxides in the exhaust gas into harmless nitrogen and water to be discharged into the atmosphere.

Does the vehicle's SCR system need maintenance?

The SCR system is produced by the manufacturer and installed on the vehicle to run automatically without maintenance and debugging. The system automatically adjusts the injection volume of the vehicle urea solution according to the engine load. The consumption of the adjustment solution is determined by the manufacturer of the vehicle.

In order to ensure the normal operation of the SCR system, be sure to use a high-quality automotive urea solution (such as the automotive urea solution produced by EverBlue technology), otherwise it will cause damage to the vehicle. Because inferior reductant has low purity and many impurities, it will damage the SCR system of the vehicle, and the expensive repair cost will not be included in the scope of the vehicle warranty.