ARRANGEMENT FOR INTRODUCING A LIQUID MEDIUM INTO EXHAUST GASES FROM A COMBUSTION ENGINE

摘要

Arrangement for introducing a liquid medium into exhaust gases from a combustion engine, comprising - a mixing duct (2), - an injection means (4) for injecting the liquid medium into the mixing duct, and - an inlet duct (6) situated upstream of the mixing duct. The inlet duct comprises a first duct section (14) which is annular in cross-section and a second duct section (15) which is annular in cross-section, is situated downstream of the first duct section and surrounds the mixing duct. The first duct section surrounds the second duct section. The mixing duct further comprises a flow reversal section (18) via which an annular outlet (16) of the first duct section is connected to an annular inlet (17) of the second duct section and which is adapted to reversing the direction of flow of the exhaust gases flowing through the inlet duct so that they are caused to flow through the second duct section in a direction opposite to that of the exhaust gases in the first duct section.