| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous urea nozzle device capable of ejecting aqueous urea into exhaust gas through sufficient atomization thereof. <P>SOLUTION: An aqueous urea nozzle 30 which ejects aqueous urea into exhaust gas of an engine, is equipped with a nozzle body 52 mounted in an exhaust pipe through which exhaust gas flows. The tip ejection part 31 of the nozzle body 52 is protruded inside the exhaust pipe, and concentrically provided with triple ejection ports 54, 56, 58. Ejection ports 54, 56 on the radial inside and outside are employed as ejection port for air which ejects compressed air. An intermediate ejection port 56 between the ejection ports 54, 58 is employed as an ejection port for aqueous urea which ejects aqueous urea. The compressed air acts on aqueous urea ejected through the intermediate ejection port 56 from the radial inside and outside so as to atomize aqueous urea. <P>COPYRIGHT: (C)2007,JPO&INPIT |
