EXHAUST GAS PURIFYING SYSTEM AND METHOD FOR MONITORING SAME

Title:

EXHAUST GAS PURIFYING SYSTEM AND METHOD FOR MONITORING SAME

Document Type and Number:

WIPO Patent Application WO/2017/039268

Kind Code:

A1

Abstract:

An exhaust gas purifying system comprises: a reduction agent injecting module installed on a housing to inject a reduction agent into the housing, the housing capable of being mounted on an exhaust pipe through which exhaust gas from an engine is discharged; a selective catalyst reduction device installed behind the reduction agent injecting module within the housing to react nitrogen oxides in the exhaust gas with the reduction agent, which is injected by the reduction agent injecting module, to reduce the nitrogen oxides; a differential pressure sensor for measuring a pressure difference between the internal pressure of the housing in front of the selective catalyst reduction device and the internal pressure of the housing behind the selective catalyst reduction device; and a control device that receives pressure information from the differential pressure sensor and outputs a first warning signal when the received pressure is equal to or lower than a preset pressure.

Inventors:

MOON SEUNG-EUN (KR)
IM IN-HYUK (KR)
KIM TAE-HYUNG (KR)
CHOI NAM-IL (KR)

Application Number:

PCT/KR2016/009610

Publication Date:

March 09, 2017

Filing Date:

August 29, 2016

Export Citation:

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Assignee:

DOOSAN INFRACORE CO LTD (KR)

International Classes:

F01N3/20; F01N9/00; F01N11/00; G01F1/34; G01L13/00

Domestic Patent References:

WO2014087536A1

2014-06-12

Foreign References:

JP2005214169A	2005-08-11
KR20150073577A	2015-07-01
KR20150079928A	2015-07-08
JP2008545092A	2008-12-11

Other References: