发明申请
- 专利标题： Method and system for maintaining aftertreatment efficiency
- 专利标题（中）： 维持后处理效率的方法和系统
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申请号： US11806359申请日： 2007-05-31
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公开(公告)号： US20080295484A1公开(公告)日： 2008-12-04
- 发明人: Mark Scaife , Trent Cleveland , Michael Lowe , Cornelius Opris , Evan Jacobson , Matthew R. Roth
- 申请人： Mark Scaife , Trent Cleveland , Michael Lowe , Cornelius Opris , Evan Jacobson , Matthew R. Roth
- 专利权人： Caterpillar Inc.
- 当前专利权人： Caterpillar Inc.
- 主分类号： F01N3/023
- IPC分类号： F01N3/023
摘要：
A method is provided for compensating for factors affecting particulate matter accumulation within an aftertreatment element of an engine exhaust system. The method comprises determining rate of change of flow resistance through the aftertreatment element with time. Regeneration is periodically initiated to reduce particulate matter accumulation within the aftertreatment element. Rate of change of flow resistance through the aftertreatment element over time is correlated with at least a model of particulate matter accumulation within the aftertreatment element and a model of regeneration frequency of the aftertreatment element, based on predetermined values for particulate matter accumulation and regeneration frequency. Action, at least including increasing regeneration frequency, is initiated to compensate for an increased rate of particulate matter accumulation in the aftertreatment element.
公开/授权文献
- US08011179B2 Method and system for maintaining aftertreatment efficiency 公开/授权日：2011-09-06
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