With its EGR-system, Scania attacks emissions at source – in the combustion chamber. No substances need to be added.

Scania has chosen this technology to ensure that the inline Scania Euro 4 vehicles can operate on standard diesel fuel available at any pump, without any worries about the availability of additives.

The engines feature Scania’s own engine management system as well as high-pressure fuel injection to achieve optimum economy. In some cases turbocompounding is used.

Scania EGR combines lower emissions with excellent operating economy. EGR is a tried-and-proven solution that has been used on heavy vehicles in the US and on cars and light commercial vehicles all over the world for many years. 

Some of the exhaust gases are cooled and fed back into the engine to achieve a lower combustion temperature. (A lower combustion temperature gives lower nitrogen oxide emissions and high injection pressures give lower particulates.)

Scania EGR effectively reduces emissions in all conditions, including highway driving and long-haulage, as well as low speed stop-and-go as in urban areas. This makes Scania EGR an excellent solution e.g. for city buses and urban distribution trucks. 

Scania EGR also saves weight, reduces complexity and leaves space for larger fuel tanks.

Operating costs are similar to Scania’s Euro 3 engines – and this is achieved despite considerably lower emissions, both of nitrogen oxides and particulate matter.