Device for use in exhaust aftertreatment system

A device for use in an exhaust aftertreatment system for an internal combustion engine, comprising

• a particulate filter system having a particulate filter (DPF) for the collection of particles from the engine and a heating unit for the intermittent burning of soot at a temperature suitable for soot combustion, the particulate filter system being arranged to switch between an operating mode for the collection of soot and an operating mode for active regeneration,
• a bypass line extending between the inlet and outlet of the particulate filter system,
• a valve disposed in the bypass line, which allows opening or closing of an exhaust gas flow through the bypass line, and
• a control member for operating the valve in dependence on the operating mode of the particulate filter system, so that the valve is open when the heating unit is activated and closed when the particulate filter has cooled down after such activation of the heating unit.