SCR Technology. SCR technology involves the use of optimized engines, a catalytic converter in place of the silencer, and a special tank containing a reducing fluid (AdBlue), which is injected upstream of the catalyst by an electronically controlled dosing system.

Iveco has taken the strategic decision to reduce NOx levels by treating exhaust gases after they leave the engine by means of a catalytic converter. That makes it possible to optimise the combustion process in the engine while at the same time cutting both fuel consumption and particulate emissions.

With SCR no extra filter is required to comply with the new environmental standards. In addition, EuroCargo’s well-known drivability provided by the Tector engines is not affected, while reliability and fuel consumption are improved. They do not require an oversized cooling system and the engine’s maximum power output is not impaired, indeed, power levels have been improved.

A special tank contains the reducing agent AdBlue, a solution of 32.5% of urea in water, which is non-toxic, colourless and non-flammable and thus easily stored. Its physical and chemical properties are defined in standard DIN 70070. In the SCR system, AdBlue is sprayed into the exhaust pipe upstream of the catalyst in very precise quantities, activating the reaction that converts NOx and ammonia in the exhaust gases into harmless nitrogen and water. AdBlue is injected by an electronically controlled dosing unit in amounts that depend on both vehicle and environmental factors.

The system ensures that the standards are met even in extreme conditions, without affecting vehicle performance. SCR technology is designed to last for the life of the vehicle and does not require special maintenance.