Emission class upgrading

Proventia's most advanced retrofit system NOxBUSTER® City DPF +SCR upgrades Euro 4/ 5 vehicles up to Euro 6 emission level. NOxBUSTER® City fulfils London Ultra Low Emission Zone (ULEZ) requirements. The system is PEMS tested and already in the market, in use and approved in Sweden. Depending on the vehicle's original emission level, Proventia NOxBUSTER® DPF+ SCR and NOxBUSTER® City DPF+ SCR systems can upgrade the vehicles emission class to Euro 6.

Upgrades up to Euro 5
Upgrades up to Euro 6

As a rule, an on-road vehicle's emission classes can be upgraded as follows:

Emission class upgrading
Proventia system
From Euro 5 to Euro 6 NOxBUSTER® City DPF+SCR
From Euro 4 to Euro 6 NOxBUSTER® City DPF+SCR
From Euro 4 to Euro 5 NOxBUSTER® SCR only
From Euro 3 to Euro 5 NOxBUSTER® DPF+SCR
From Euro 2 to Euro 5 NOxBUSTER® DPF+SCR
From Euro 1 to Euro 4 NOxBUSTER® DPF+SCR
Factors affecting the choice of retrofit technology: 
  • The age of the vehicle or machine and its original emission class
  • Usage (urban or highway driving)
  • Engine's duty cycles (heavy-duty, long idling)
  • Quality of fuel used
  • Targeted emission reduction percentage (%) and which pollutants are to be reduced (particulate matter, nitrogen oxides, carbon oxides, hydrocarbons)