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Electrically heated particulate filter with reduced stress

A particulate filter and resistance heater technology, which is applied in dispersed particle filtration, machine/engine, dispersed particle separation, etc. It can solve problems such as difficult to realize electric heating and reduce system durability

Active Publication Date: 2012-03-21
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to achieve the durability of electrically heated PM reduction systems

Method used

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  • Electrically heated particulate filter with reduced stress
  • Electrically heated particulate filter with reduced stress
  • Electrically heated particulate filter with reduced stress

Examples

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Embodiment Construction

[0020] The following description is merely illustrative in nature and does not limit the disclosure, application or use. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0021] 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, combinational logic, that executes one or more software or firmware programs circuits, and / or other suitable components that provide the described functions.

[0022] The present disclosure employs heater zones distributed across the inlet of the electrically heated PM filter. The heater zones are spaced in such a way that thermal stress is relieved between active heaters. Thus, the overall stress due to heating is smaller and distributed over the volume of the electrically heated PM filter. This approach allows regeneration in larger section...

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Abstract

The invention relates to an electrical heating particulate material filter with reduced stress. A system comprises a particulate material (PM) filter having an inlet for receiving exhaust gas. A heating device divided in zones is in the inlet and comprises resistance zones with N zones, wherein N is an integer larger than 1. Each of the N zones comprises M sub zones, wherein M is an integer larger than 1. A control module selectively activates one of the N zones, in order to release a regeneration in downstream located parts of the PM-filter of one of the N zones, and deactivates other the N zones.

Description

[0001] Statement of Government Rights [0002] This disclosure was made pursuant to Contract No. DE-FC-04-03AL67635 between the US Government and the Department of Energy (DoE). The US Government has certain rights in this disclosure. [0003] Cross References to Related Applications [0004] This application claims priority to US Provisional Application No. 60 / 955,743, filed August 14, 2007. [0005] This application is related to U.S. Patent Application No. 11 / 561,100, filed November 17, 2006, U.S. Patent Application No. 11 / 561,108, filed November 17, 2006, and U.S. Patent Application No. 11 / 557,715. The content of the above application is incorporated by reference in its entirety. technical field [0006] The present disclosure relates to particulate (PM) filters, and more particularly to ash reduction systems for PM filters. Background technique [0007] The statements in this section merely provide background information related to the present disclosure and may n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/00B01D46/44F01N3/022F01N3/023
CPCF01N3/035F01N13/02F01N3/027F01N13/009
Inventor E·V·冈策
Owner GM GLOBAL TECH OPERATIONS LLC
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