Title:
エンジンの排気ガス浄化装置
Document Type and Number:
Japanese Patent JP4225126
Kind Code:
B2
Abstract:
An exhaust gas purifying system for an engine, including a HC trap catalyst disposed in an exhaust passage and operative to trap HC contained in the exhaust gas, and a control unit being programmed to: upon activating the HC trap catalyst after the engine is started, control a target excess air ratio to a preset value smaller than a normal value to which the target excess air ratio is controlled when the HC trap catalyst is activated, to thereby rise an exhaust gas temperature; and increase the target excess air ratio as the temperature of the HC trap catalyst rises, to thereby increase a heat quantity generated upon oxidation of the HC trapped by the HC trap catalyst.
Inventors:
Manabu Miura
Application Number:
JP2003166044A
Publication Date:
February 18, 2009
Filing Date:
June 11, 2003
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F01N3/20; F02D41/06; B01D53/94; F01N3/08; F01N3/24; F02D41/02; F02D21/08; F02D41/00
Domestic Patent References:
| JP2002227638A | ||||
| JP2003035135A | ||||
| JP2003129883A | ||||
| JP2003236339A | ||||
| JP2003206785A |
Attorney, Agent or Firm:
Masaki Goto