What does engine SCR mean?

[MacAaron]

SCR stands for "Selective Catalytic Reduction" technology, which is a method for diesel engine exhaust treatment. The technical approach involves first addressing the particulate emissions of diesel engines through internal purification techniques such as optimizing in-cylinder combustion and reducing oil consumption. Subsequently, an SCR aftertreatment device is employed to reduce NOx emissions from the engine. Relevant information about the catalyst is as follows: 1. Currently, the catalysts used internationally mainly include V2O5/WO3(MoO3)/TiO2 and other vanadium-containing and metal-based zeolite catalysts. 2. Zeolite catalysts exhibit excellent low-temperature characteristics and high conversion efficiency at high space velocities. Vanadium-based catalysts have become commonly used due to their internationally recognized high conversion activity and certain resistance to SO2 poisoning.