Fluid flow control device equipped therewith exhaust treatment system and method for dispersing a flow of exhaust in an exhaust pipe

Fluid flow control device (10) for receiving and directing exhaust gas from an engine (14) comprising, to an exhaust treatment device (19): arranged one in an exhaust line (18) of the engine nozzle (16), said nozzle (16) has an inlet opening (20) and an outlet (22) for forming a first flow path (F and a adjacent the nozzle (16) arranged injector (28), wherein the injector (28) is oriented so that it directs a pressurized fluid (62) in the first or second flow path (F characterized, in that the injector (28) is oriented so that the pressurized fluid (62) is directed so that it impinges on the nozzle (16) and evaporated.