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Electrically heated particulate filter regeneration during engine start/stop operation

An electric heater and engine technology, applied in the direction of engine starting, engine motor starting, engine components, etc., can solve problems such as reduction, fuel economy reduction, and reduction in regenerative capabilities

Inactive Publication Date: 2011-01-05
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrically heated PM reduction systems reduce fuel economy by a negligible amount, but can operate based on exhaust flow restriction
For example, as the exhaust gas flow increases beyond a certain flow rate (kg / s), the ability to initiate regeneration via an electric heating element is reduced
Additionally, when the exhaust flow increases beyond a certain flow rate, the ability to keep PM burning through the passage is reduced

Method used

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  • Electrically heated particulate filter regeneration during engine start/stop operation
  • Electrically heated particulate filter regeneration during engine start/stop operation
  • Electrically heated particulate filter regeneration during engine start/stop operation

Examples

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Embodiment Construction

[0041]The following description is merely illustrative in nature and is in no way intended to limit the invention and its application or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, the phrase "at least one of A, B, and C" should be construed to mean a logical (A or B or C) using a non-exclusive logical "or". It should be understood that steps within a method may be executed in different order without altering the principles of the present invention.

[0042] 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, a combination of Logic circuits and / or other suitable components that provide the described functionality.

[0043] Electric heating technology works best when the exhaust gas flow rate is relatively low. By way of example only, exhaust gas flow may be low when th...

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PUM

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Abstract

The invention relates to an electrically heated particulate filter regeneration duraing engine start / stop operation. A control system comprises a combustion control module and a regeneration control module. The combustion control module controls operation of a vehicle in a first mode during which a combustion engine is off and in a second mode during which the combustion engine is on. The regeneration control module is in communication with the combustion control module and activates an electric heater during the first mode to heat an inlet of a particulate matter (PM) filter. Exhaust gas produced by the combustion engine enters the inlet and initiates a regeneration cycle of the PM filter in the second mode.

Description

technical field [0001] The present invention relates to engine control systems and methods, and more particularly to control systems and methods for regenerating an electrically heated particulate filter during engine start / stop operations. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors—to the extent described in the Background section—and aspects of the specification that are not otherwise prior art at the time of filing are neither expressly nor implied to be contrary to the prior art of the present invention. technology. [0003] Engines, such as diesel engines and compression ignition engines, can generate particulate matter (PM) that is filtered and collected from exhaust by PM filters. The PM filter is arranged in the exhaust system of the engine. The PM filter reduces the emission of PM generated during combustion. Over time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N3/027
CPCF01N13/009F01N2560/025F02D41/405F01N2560/08F01N2900/08F02N11/0829F01N3/027F01N2900/12F01N2560/14Y02T10/48F02D41/029Y02T10/47F01N3/106F01N3/103F01N2430/085F01N2560/06F01N9/002F01N2560/07Y02A50/20Y02T10/40
Inventor E·V·冈策M·J·小帕拉托尔S·R·史密斯
Owner GM GLOBAL TECH OPERATIONS LLC