Invention Application
WO2006041545A3 METHOD FOR THE SIMULTANEOUS DESULFATION OF A LEAN NOX TRAP AND REGENERATION OF A DIESEL PARTICULATE FILTER
审中-公开
同时脱硫的柴油微粒过滤器和再生柴油颗粒过滤器的方法
- Patent Title: METHOD FOR THE SIMULTANEOUS DESULFATION OF A LEAN NOX TRAP AND REGENERATION OF A DIESEL PARTICULATE FILTER
- Patent Title (中): 同时脱硫的柴油微粒过滤器和再生柴油颗粒过滤器的方法
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Application No.: PCT/US2005023527Application Date: 2005-07-01
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Publication No.: WO2006041545A3Publication Date: 2006-07-06
- Inventor: HUANG YIQUN NMN , SASAKI SHIZUO NMN , NEELY GARY D , LEET JEFFERY A
- Applicant: SOUTHWEST RES INST
- Assignee: SOUTHWEST RES INST
- Current Assignee: SOUTHWEST RES INST
- Priority: US61581004 2004-10-04
- Main IPC: F01N3/00
- IPC: F01N3/00 ; F01N3/02 ; F01N3/10 ; F01N5/04
Abstract:
High exhaust gas temperatures whereby sulfur is removed from a lean NOx traps simultaneously with regeneration of a Diesel particulate filter is provided by alternating engine operation in respectively defined lean and rich combustion modes. The duration and frequency of the respective lean and rich operating modes, as well as the air/fuel ratio during the respective modes, are preferably controlled by the sensed temperature of the lean NOx trap substrate.
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