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Apparatus, system, and method for mitigating diesel exhaust fluid deposits and associated conditions

A diesel engine and fluid technology, applied in the direction of exhaust equipment, electronic control of exhaust treatment equipment, diagnostic equipment of exhaust treatment equipment, etc., can solve problems such as unresolved impact

Active Publication Date: 2012-11-28
酷敏斯IP公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these systems do not address the accumulation of DEF deposits in the DEF decomposition tube upstream of the SCR catalyst and the impact that these DEF deposit accumulations may have on the OBD system

Method used

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  • Apparatus, system, and method for mitigating diesel exhaust fluid deposits and associated conditions
  • Apparatus, system, and method for mitigating diesel exhaust fluid deposits and associated conditions
  • Apparatus, system, and method for mitigating diesel exhaust fluid deposits and associated conditions

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Embodiment Construction

[0035] Reference throughout this specification to "one embodiment," "an embodiment," or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the disclosed subject matter. Appearances of the phrases "in one embodiment," "in an embodiment," and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment. Similarly, use of the term "implementation" means that the implementation has a particular feature, structure, or characteristic described in connection with one or more embodiments of the disclosed subject matter, however, in the absence of an express nexus indicating otherwise, an implementation A modality may be associated with one or more embodiments.

[0036] The described features, structures, and characteristics of the subject matter of the present disclosure may be combined in any suitable manner in one or more e...

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Abstract

According to one embodiment, described herein is an apparatus for mitigating on-board diagnostic (OBD) faults generated by an OBD system of an internal combustion engine (ICE) system (10) having a selective catalytic reduction system (230) with a diesel exhaust fluid (DEF) decomposition tube (239). The apparatus includes a fault mitigation module (320) that is configured to monitor at least one OBD signal of the OBD system and issue a request (325) for regenerating the DEF decomposition tube when a value of the at least one OBD signal reaches a predetermined regeneration threshold corresponding with the at least one OBD signal. The regeneration threshold is reachable prior to an OBD fault threshold corresponding with the at least one OBD signal. The apparatus also includes a regeneration module (340) that is configured to regenerate the DEF decomposition tube according to the issued request.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application 61 / 288661, filed December 21, 2009, the entire contents of which are hereby incorporated by reference. technical field [0003] The subject matter of the present disclosure relates to internal combustion engine systems having exhaust aftertreatment systems, and more particularly to reducing deleterious effects from plugging of internal combustion engine systems with reductant deposits on components of associated exhaust aftertreatment systems. Background technique [0004] An exhaust aftertreatment system receives and processes exhaust gas generated by an internal combustion engine. A typical exhaust aftertreatment system includes any of a variety of components configured to reduce the level of harmful exhaust emissions present in the exhaust. For example, some exhaust aftertreatment systems for diesel-powered internal combustion engines include ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N11/00F01N3/18B01D53/94F01N3/023
CPCF01N9/00F01N3/2066F01N2610/00Y02T10/24F01N13/02Y02T10/47F01N3/021F01N3/023F01N3/106F01N3/208F01N11/00F01N2550/05F01N2610/02F01N2610/1493F01N2900/0422F01N2900/08F01N2900/1602F01N2900/1606F01N2900/1621F02D41/0235F02D41/024F02D41/027F02D41/1441F02D41/1448F02D41/1461F02D41/1463F01N13/009Y02T10/12Y02T10/40
Inventor D·D·威廉K·O·奥乌苏A·埃文斯林晓R·科恩D·A·米切尔L·法雷尔
Owner 酷敏斯IP公司
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