AdBlue® is used in SCR-equipped diesel vehicles

Use quality AdBlue from Yara

AdBlue is used in SCR technology-equipped diesel vehicles. Yara is one of the world’s leading producers of AdBlue, with its Sluiskil plant in the Netherlands being the largest AdBlue production site in the world. Yara’s brand of AdBlue is supplied through its network distributors, so that it reaches our local markets around the world.

AdBlue pump from Air1

AdBlue for commercial vehicles

Since 2005, most new trucks, buses, coaches and vans have been equipped with SCR technology. Yara has worked with fleet operators, fuel distributors and retail stations to provide the market with its AdBlue.

What is SCR technology for trucks, buses, off-road vehicles and cars?

"SCR" is the name of a post-combustion technology treatment for diesel vehicles, which allows them to reduce their harmful emissions of NOx (nitrogen oxides). SCR stands for Selective Catalytic Reduction. This technology requires the use of a reagent called AdBlue. Almost all of the main engine manufacturers use this technology to meet the requirements of new legislation on NOx (Nitrogen oxides) emissions.

The main components of the SCR system are the:

  • SCR catalyst 
  • AdBlue Fluid injection unit 
  • AdBlue tank
  • AdBlue injection control unit.

How does AdBlue work with SCR technology?

AdBlue is injected from the vehicle’s dedicated AdBlue storage tank into the exhaust pipe, which is in front of the SCR catalyst, but downstream of the engine. As it is heated in the exhaust, the AdBlue changes into ammonia (NH3) and carbon dioxide (CO2). When the nitrogen oxide (NOx) gases from the exhaust pipe react inside the catalyst with the ammonia, the harmful NOx molecules in the exhaust are converted into harmless nitrogen and water, which is released to the atmosphere as steam.

To learn more, please visit our What is AdBlue? page

Do I need to maintain my vehicle’s SCR system?

The SCR system is installed in your vehicle by the manufacturer and works automatically. You do not need to maintain or modify it. AdBlue is automatically injected into the exhaust depending on your vehicle engine’s load. As for adjusting the consumption, the level of AdBlue consumption is determined by the vehicle manufacturer.

To make sure that your SCR system works correctly, please make sure that you only use high quality AdBlue, such as that sold by Yara. This will protect the investment you have made in your vehicle as a low quality reagent would not be pure enough and could be contaminated with impurities. This could cause damage to your catalyst and lead to very high repair costs, that the vehicle manufacturer will not cover.