Title:
DIESEL PARTICULATE FILTER CLEANING METHOD
Document Type and Number:
Japanese Patent JP2019048278
Kind Code:
A
Abstract:
To provide a technique for removing a harmful ash component accumulated on a DPF(diesel particulate filter) at a high removal ratio which cannot be achieved in conventional cleaning.SOLUTION: A method for cleaning a diesel particulate filter on which an ash component, which is a compound of at least one element selected from P, S, Ca and Zn contained in an exhaust gas, is accumulated, comprises immersing the diesel particulate filter, on which the ash component is accumulated, in a cleaning fluid containing a cleaning component which enables solubilization of the ash component in water, thereby dissolving the ash component in water and removing the same. Specifically, the afore-said cleaning component may comprise citric acid, sodium citrate, ethylenediamine tetraacetic acid (EDTA), tartaric acid and so on.SELECTED DRAWING: Figure 3
Inventors:
SUZUKI HIDENORI
KATAOKA HIROKI
IKEGAWA YU
ISOHATA MASARU
IYODA KENICHI
URUSHIBARA HIROSHI
OYA TOSHIKI
IMANISHI YUHEI
KATAOKA HIROKI
IKEGAWA YU
ISOHATA MASARU
IYODA KENICHI
URUSHIBARA HIROSHI
OYA TOSHIKI
IMANISHI YUHEI
Application Number:
JP2017174712A
Publication Date:
March 28, 2019
Filing Date:
September 12, 2017
Export Citation:
Assignee:
TOKYO ROKI KK
HINO MOTORS LTD
HINO MOTORS LTD
International Classes:
B01D41/04; B08B3/04; F01N3/021
Domestic Patent References:
| JP2004270688A | 2004-09-30 | |||
| JPH0724488A | 1995-01-27 | |||
| JPS51125959A | 1976-11-02 | |||
| JP2006105086A | 2006-04-20 | |||
| JP2002361052A | 2002-12-17 |
Foreign References:
| US20080083334A1 | 2008-04-10 |
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation