Title:
EXHAUST GAS PURIFICATION DEVICE AND ENGINE
Document Type and Number:
WIPO Patent Application WO/2022/158130
Kind Code:
A1
Abstract:
[Problem] To provide: an exhaust gas purification device for suppressing thermal damage to an injection nozzle without being bound by an air assist function of reducing agent injection; and an engine including the exhaust gas purification device. [Solution] An exhaust gas purification device 1 for purifying exhaust gas of nitrogen oxides comprises: a catalyst 14 that is provided in an exhaust pipe 4 (exhaust passage) for transporting exhaust gas, discharged from an engine 2, in a predetermined exhaust direction, and promotes the reduction of the exhaust gas; and an injection nozzle 11 that is provided in the exhaust pipe 4 so as to be upstream of the catalyst 14 in the exhaust direction, and injects a reducing agent for reducing the exhaust gas. The injection nozzle 11 comprises an injection hole 16 for injecting the reducing agent toward the catalyst 14, and a discharge hole 18 for discharging a cooling medium in at least the direction opposite the exhaust direction.
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Inventors:
INOUE TSUYOSHI (JP)
MORIMITSU DAISUKE (JP)
IWAMOTO KOHEI (JP)
MORIMITSU DAISUKE (JP)
IWAMOTO KOHEI (JP)
Application Number:
PCT/JP2021/044089
Publication Date:
July 28, 2022
Filing Date:
December 01, 2021
Export Citation:
Assignee:
YANMAR HOLDINGS CO LTD (JP)
International Classes:
F01N13/08; F01N3/08; F01N3/18; F01N3/24
Domestic Patent References:
| WO2005073528A1 | 2005-08-11 |
Foreign References:
| JP2020045824A | 2020-03-26 | |||
| JP2020506330A | 2020-02-27 | |||
| JP2015094327A | 2015-05-18 | |||
| JPH0932540A | 1997-02-04 | |||
| JP2007192083A | 2007-08-02 | |||
| JP2010090836A | 2010-04-22 | |||
| JP2017015081A | 2017-01-19 | |||
| US20120096838A1 | 2012-04-26 | |||
| JP2015075042A | 2015-04-20 |
Attorney, Agent or Firm:
KITAMURA, Chikahiko (JP)
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