How does the SCR system work with AdBlue®?

For many truck drivers or diesel car owners, AdBlue® is a familiar fluid. But how exactly does it work in the SCR system?

Here’s how it works:

* AdBlue® is injected into the exhaust stream of the diesel engine before it reaches the catalyst.

* Under high temperatures, AdBlue® breaks down into ammonia (NH₃) and carbon dioxide (CO₂).

* Inside the catalyst, the ammonia reacts with nitrogen oxides (NOx) — the main harmful components of diesel exhaust.

* As a result of this reaction, NOx is converted into harmless nitrogen (N₂) and water (H₂O).

This allows vehicles to meet stringent Euro 5 and Euro 6 emission standards and reduces harmful emissions by up to 90%.

Important: AdBlue® is not mixed with fuel — it’s a separate system with its own tank, sensors, and control units.

TIZ-Karbogaz is a trusted supplier of certified AdBlue TIZINOX® (VDA-approved).

We offer delivery starting from 1000 liters and flexible terms for businesses.