| 摘要 |
FIELD: machine building. ^ SUBSTANCE: cooling water is supplied into circular duct (62) in mounting part (60) assembled with sprayer (50) for injection of additive into exhaust duct (12) communicating with engine (11). Inlet duct (81) for inlet of cooling water and outlet duct (91) for output of cooling water are connected to duct (62) of cooling water, and, at least inlet duct (81) is projected in the direction tangential to duct (62) of cooling water. Converging part (62a), with width of the duct of water decreased with projecting part (63) which corresponds to a part of a side wall in the direction along circumference of duct (62) of cooling water, is made in position of duct (62) of cooling water near connection between duct (62) of cooling water and inlet duct (81). ^ EFFECT: cleaning exhaust gases during long time by means of efficient cooling sprayer for injection of additive into exhaust duct. ^ 4 cl, 8 dwg |
