Title:
EXHAUST PURIFICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/002651
Kind Code:
A1
Abstract:
The purpose of the invention is to provide an exhaust purification device capable of suppressing the decrease in NOx catalyst removal efficiency over time due to soot accumulation. The invention provides an exhaust purification device (1) for using an air injection nozzle (16) to inject pressurized air into a casing (13) of a catalyst reactor (12) containing an NOx catalyst (14) as a catalyst and removing soot adhering to the NOx catalyst (14), wherein it is determined and externally notified that there is abnormal deterioration in the NOx catalyst (14) when the pressure difference ∆P in exhaust between the upstream and downstream sides of the NOx catalyst (14) has increased by at least a first reference pressure difference increase ∆Pt1, which is the allowable amount of pressure difference increase, above the pressure difference ∆Pi in exhaust between the upstream and downstream sides of the catalyst in the initial state at the same exhaust flow rate Ve.
Inventors:
FUKUI YOSHINORI (JP)
Application Number:
PCT/JP2015/068491
Publication Date:
January 07, 2016
Filing Date:
June 26, 2015
Export Citation:
Assignee:
YANMAR CO LTD (JP)
International Classes:
F01N3/20; F01N3/08; F02D41/22; F02D43/00; F02D45/00
Foreign References:
| JP2003155911A | 2003-05-30 | |||
| JP2011252435A | 2011-12-15 | |||
| JP2010236458A | 2010-10-21 | |||
| JP2005155374A | 2005-06-16 |
Other References:
See also references of EP 3163041A4
Attorney, Agent or Firm:
YANO Juichiro (JP)
Juichiro Yano (JP)
Juichiro Yano (JP)
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