A method for atomizing one or more fluids, the method comprising conducting a pressurized fluid (s) through one or more outlets (6) of a nozzle, each outlet having an orientation of such so that the fluid stream (s) discharging (n) from the one or more outlets (6) of the same nozzle collides with itself (s) or against each other at a distance from at one or more outlets (6) in order to provide a fluid atomization, in which the atomization is carried out in an exhaust system of a combustion engine (11) or of a gas turbine, which is preferably a diesel combustion engine (11).
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