Title:
EXHAUST PURIFICATION SYSTEM FOR ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/137739
Kind Code:
A1
Abstract:
An exhaust purification system (10) for an engine (90) comprises a catalyst (11) that reduces and purifies a designated component in the engine (90) exhaust, a supply volume calculation unit (23) that calculates the required supply volume of a reducing agent or a precursor thereof in accordance with the operation status of the engine (90), an injection device (13) that supplies a liquid of the reducing agent or the precursor thereof as a spray, and a spray velocity control unit (24) that can control the velocity of the spray in the direction of the exhaust flow. The spray velocity control unit (24) decreases the spray velocity in the direction of the exhaust flow as the possibility of deposits being formed is determined to increase on the basis of the operation status of the engine (90).
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Inventors:
FURUKAWA KENGO (JP)
HONGO YUSUKE (JP)
HONGO YUSUKE (JP)
Application Number:
PCT/JP2019/049590
Publication Date:
July 02, 2020
Filing Date:
December 18, 2019
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
B01D53/94; F01N3/08
Foreign References:
| JP2017122391A | 2017-07-13 | |||
| JP2005273579A | 2005-10-06 | |||
| JP2011106313A | 2011-06-02 | |||
| JP2008180202A | 2008-08-07 | |||
| JP2005214172A | 2005-08-11 |
Attorney, Agent or Firm:
HATTORI Masaki (JP)
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