Invention Grant
- Patent Title: Method and system for maintaining aftertreatment efficiency
- Patent Title (中): 维持后处理效率的方法和系统
-
Application No.: US11806359Application Date: 2007-05-31
-
Publication No.: US08011179B2Publication Date: 2011-09-06
- Inventor: Mark Scaife , Trent Cleveland , Michael Lowe , Cornelius Opris , Evan Jacobson , Matthew R. Roth
- Applicant: Mark Scaife , Trent Cleveland , Michael Lowe , Cornelius Opris , Evan Jacobson , Matthew R. Roth
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Main IPC: F01N3/00
- IPC: F01N3/00
Abstract:
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.
Public/Granted literature
- US20080295484A1 Method and system for maintaining aftertreatment efficiency Public/Granted day:2008-12-04
Information query
