EXHAUST GAS PURIFICATION SYSTEM

Title:

EXHAUST GAS PURIFICATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2014/162814

Kind Code:

A1

Abstract:

Provided is an exhaust gas purification system with which it is possible to prevent a decrease in engine torque during a desulfurization process in a NOx storage reduction catalyst. This exhaust gas purification system is equipped with a NOx storage reduction catalyst (3) provided in the exhaust pipe (2) of an engine (E), and a desulfurization process control unit (8) that controls the intake air amount for the engine (E) to enrich the exhaust gas, and performs a desulfurization process in the NOx storage reduction catalyst (3). The desulfurization process control unit (8) is constructed so as to gradually reduce the intake air amount when the desulfurization process begins.

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Inventors:

SAKAMOTO TAKAYUKI (JP)
NAGAOKA DAIJI (JP)

Application Number:

PCT/JP2014/055610

Publication Date:

October 09, 2014

Filing Date:

March 05, 2014

Export Citation:

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Assignee:

ISUZU MOTORS LTD (JP)

International Classes:

F02D41/04; F01N3/08; F01N3/20; F02D43/00

Foreign References:

JPH11223148A	1999-08-17
JP2008502835A	2008-01-31
JP2010090711A	2010-04-22

Other References: