Title:
EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2009299617
Kind Code:
A
Abstract:
To raise temperature of exhaust gas in a wide operation range and activate a catalyst at an early stage.
In an exhaust emission control device for an engine provided with an oxidation catalyst in an exhaust pipe, a variable valve timing mechanism is controlled to advance close timing of an exhaust valve more than that in an activated state of catalyst temperature (S30), when the oxidation catalyst is not in the activated state (S20) during forced regeneration operation (S10).
Inventors:
KANAYAMA KUNIMI
Application Number:
JP2008156494A
Publication Date:
December 24, 2009
Filing Date:
June 16, 2008
Export Citation:
Assignee:
MITSUBISHI MOTORS CORP
International Classes:
F01N3/02; B01D53/94; F01N3/20; F01N3/24; F02D13/02
Attorney, Agent or Firm:
Koji Nagato
Junichi Yamanaka
Junichi Yamanaka
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