Exhaust aftertreatment


  • An exhaust gas treatment (NOx)is a procedure that purifies combustion gases , either mechanically or chemically, after they have left the combustion chamber.
  • Based on NOx-boundary values for diesel engines in diverse exhaust emission standards, a NOx-reducing exhaust  gas treatment is necessary in almost all vehicles.
  • Here the use of the SCR-converter (selective catalytic reduction) in combination with an aqueous urea solution (AdBlue) is applied in the exhast gas boxes.
  • By the injection of aqueous urea solution into the exhaust gas current,  the reducing agent ammonia is generated by hydrolysis.
  • In the SCR-converter nitrogen oxide (NO and NO2)  are converted into harmless nitrogen components.
  • The more evenly the ammonia is distributed in the exhaust gas, the more efficiently nitrogen oxide is reduced.
  • The two-phase flow simulation can be used as a tool for interpreting the exhaust gas boxes with SCR-converters and has been used successfully at ITB GmbH in prduct development for years.


Cookies make it easier for us to provide you with our services. With the usage of our services you permit us to use cookies.
More information