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Face crack reduction strategy for particulate filters

A filter and particulate matter technology, applied in the field of surface cracks, can solve problems such as difficult to achieve electric heating and reduce system durability

Inactive Publication Date: 2011-07-13
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Face crack reduction strategy for particulate filters
  • Face crack reduction strategy for particulate filters
  • Face crack reduction strategy for particulate filters

Examples

Experimental program
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Embodiment Construction

[0028] The following description is merely exemplary in nature and is not intended to limit the disclosure, application or use. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts or features.

[0029] 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.

[0030] The present disclosure relates to zoned or non-zone electric heaters for PM filters. The electric heater may be in contact with or spaced from the PM filter. The heater selectively heats all or part of the PM filter. The PM filter may be in contact with the front of the PM filter or mounted sufficiently close to the front of the PM filter to control the heating mode. The ...

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Abstract

The invention relates to a face crack reduction strategy for a particulate filter. A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion. A control module initiates combustion of PM in the PM filter using a heater and selectively adjusts oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter. A method comprises providing a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion; initiating combustion of PM in the PM filter using a heater; selectively adjusting oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter.

Description

[0001] Statement of Government Rights [0002] 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] This application claims priority to US Provisional Patent Application No. 60 / 972,517, filed September 14, 2007. [0005] This application is related to U.S. Patent Application No. 11 / 959,753, filed December 19, 2007, U.S. Patent Application No. 11 / 956,722, filed December 14, 2007, and U.S. Patent Application No. 11 / 561,100, filed November 17, 2006 , US Patent Application No. 11 / 561,108, filed November 17, 2006, and US Patent Application No. 11 / 557,715, filed November 8, 2006. The content of the above application is incorporated by reference in its entirety. technical field [0006] The present invention relates to particulate matter (PM) filters, and more particularly to reducing surface cracks...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/022F01N3/027
CPCF02D41/029F01N3/035F01N3/027F01N2430/06F01N13/02Y02T10/47F01N9/002F01N2240/16F01N13/009Y02T10/40Y10S55/10Y10S55/30
Inventor E·V·冈策M·J·小帕拉托尔G·巴蒂亚
Owner GM GLOBAL TECH OPERATIONS LLC