Hi-Performance: the High Efficiency SCR system

The new STRALIS Euro VI engine range is characterised by increased capacity and equal consumption torque. It also stands out for its exclusive HI-eSCR, a patented FPT Industrial system representing the state-of-the-art in heavy-duty Diesel engine technology.

The Euro VI emission limits can be reached through the use of the SCR (Selective Catalytic Reduction) system with or without the combined use of the EGR (Exhaust Gas Recirculation) system. The use of the EGR system allows for a reduction of NOx emissions in the combustion chamber via recirculation of exhaust gases, with the consequent increase in the production of particulates and reduction of combustion efficiency. The increase in particulate emissions from the engine needs forced regeneration of the DPF.

The choice made by FPT Industrial instead consists of increasing the efficiency of the engine and in reducing the particulate produced by the combustion, due to the absence of the recirculated exhaust gases. The remaining amount of particulate is reduced in the DPF, while the nitrogen oxides are reduced in the exhaust system, with an improvement in fuel consumption, performance and reliability.

The FPT Industrial High Efficiency SCR system can reduce nitrogen oxide levels by over 95%. The after-treatment technology of FPT Industrial for Euro VI vehicles is unique and exclusive, since it meets the strict limits for nitrogen oxide emissions, thanks to the single catalytic reduction system, and without any need for the recirculation of exhaust gases. In particular, the system includes:

- Diesel Oxidation Catalyst (DOC)
- Passive Diesel Particulate Filter (DPF)
- Metering module for AdBlue
- AdBlue mixer
- Selective Catalytic Reduction (SCR)
- Clean Up Catalyst (CUC)

Finally, it is equipped with a network of integrated sensors to monitor nitrogen oxide emissions and possible excessive levels of NH3 (ammonia).
Thanks to the extremely high efficiency of the HI-eSCR catalytic reduction system, the new STRALIS is the only heavy-duty vehicle on the market to meet the Euro VI limits without the use of EGR.
This ensures major advantages over the competition:

• smaller dimensions and less weight (only one NOx treatment system instead of two);
• optimised combustion (more efficiency and less consumption);
• lower production of particulate matter (and therefore active regeneration of the DPF in exceptional cases);
• no need for additional cooling (less scattered energy due to heat reduction);
• specific power and torque at the top of the market.