What is SCR technology?

SCR stands for Selective Catalytic Reduction, this is an after treatment technology that requires the use of an Aqueous Urea solution known as AdBlue®, to reduce NOx emissions. All major diesel-engined vehicles manufacturers have decided to use this technology to meet the new emission legislation on NOx emissions (Please check vehicle handbook to ascertain if you require AdBlue®). SCR is the most cost effective solution to meet NOx emission standards.

The main components of the SCR system are the SCR catalyst, the AdBlue® injection unit, the AdBlue® tank and the AdBlue® dosing control unit. AdBlue® is injected into the exhaust pipe, in front of the SCR catalyst, downstream of the engine. Heated in the exhaust it decomposes into ammonia and CO2.   When the NOx reacts inside the catalyst with the ammonia, the harmful NOx molecules in the exhaust are converted to harmless nitrogen and water.

For the correct functioning of your SCR system, make sure you use only high quality AdBlue® such as BlueCat®. Poor quality reagent that is contaminated with foreign material risks damaging your catalyst. SCR is already a proven technology.