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Elevated exhaust temperature, zoned, electrically-heated particulate matter filter

An electric heater and particulate matter technology, which is applied to the electrical control of exhaust treatment devices, exhaust devices, exhaust treatment and other directions, can solve the problems of not constituting the existing technology, reducing the durability of the system, and difficult to realize electric heating, etc.

Active Publication Date: 2009-03-25
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] [4] The contents of this section only provide background information related to the present disclosure and may not constitute prior art
However, it is difficult to achieve the durability of the electrically heated PM reduction system

Method used

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  • Elevated exhaust temperature, zoned, electrically-heated particulate matter filter
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  • Elevated exhaust temperature, zoned, electrically-heated particulate matter filter

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Embodiment Construction

[0025] [23] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or use. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0026] [24] As used herein, the term "module" refers to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory that executes one or more software or firmware programs, combinational logic circuits, and / or other suitable components providing the described functionality.

[0027] [25] This disclosure uses an electric heater to increase the exhaust gas temperature at the input to allow more stable PM filter regeneration prior to regeneration. For example only, the inlet exhaust temperature may be raised above the maximum exhaust gas temperature encountered by the PM filter during normal operation, and below the soot oxidation tempe...

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Abstract

The present invention relates to an elevated exhaust temperature, zoned, electrically-heated particulate matter filter, in particular a system comprising an electrical heater and a particulate matter (PM) filter that is arranged one of adjacent to and in contact with the electrical heater. A control module selectively increases an exhaust gas temperature of an engine to a first temperature and that initiates regeneration of the PM filter using the electrical heater while the exhaust gas temperature is above the first temperature. The first temperature is greater than a maximum exhaust gas temperature at the PM filter during non-regeneration operation and is less than an oxidation temperature of the PM.

Description

[0001] Statement of Government Rights [0002] [1] This invention was made pursuant to US Government Contract No. DE-FC-04-03AL67635 with the Department of Energy (DoE). The U.S. Government has certain rights in this disclosure. [0003] Cross References to Related Applications [0004] [2] This application claims the benefit of US Provisional Patent Application No. 60 / 973,321, filed September 18, 2007. This application is incorporated herein by reference in its entirety. technical field [0005] [3] The present invention relates to particulate matter (PM) filters, and more particularly to elevated exhaust temperature, zoned electrically heated PM filters. Background technique [0006] [4] The contents in this section merely provide background information related to the present disclosure and may not constitute prior art. [0007] [5] An engine such as a diesel engine generates particulate matter (PM), which is filtered from exhaust gas by a PM filter. The PM filter is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N3/027
CPCF01N9/002F01N3/027Y02T10/47F01N2570/10Y02T10/40
Inventor E·V·冈策M·J·小帕拉托尔G·巴蒂亚
Owner GM GLOBAL TECH OPERATIONS LLC