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Electrically heated oxidation catalyst particulate matter protection

A technology for oxidizing catalyst and particulate matter, which is applied in the direction of electronic control, machine/engine, mechanical equipment, etc.

Inactive Publication Date: 2013-04-10
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under various operating conditions, damage to the heating system may occur preventing proper operation of the oxidation catalyst

Method used

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  • Electrically heated oxidation catalyst particulate matter protection
  • Electrically heated oxidation catalyst particulate matter protection
  • Electrically heated oxidation catalyst particulate matter protection

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Embodiment Construction

[0041] The following description is merely exemplary in nature and is not intended to limit the invention, its application or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts or features. As used herein, the term module refers to an application-specific integrated circuit (ASIC), electronic circuit, processor (shared, dedicated, or integrated) and memory that executes one or more software or firmware programs, mixed logic circuits, and / or other A suitable component that provides the described functionality.

[0042] refer to figure 1 , the exemplary embodiment of the present invention relates to a vehicle 9 comprising an exhaust gas treatment system 10 for reducing the adjusted exhaust gas composition of an internal combustion engine 12 . It should be understood that the engine 12 is merely schematic in nature and that the invention as used herein may be applied to various engine systems. Such ...

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Abstract

The present invention relates to electrically heated oxidation catalyst particulate matter protection, especially provides a control method for a heating device of an oxidation catalyst. The control method includes: estimating an accumulation of particulate matter on the heating device; and selectively controlling a switching device in electrical communication with the heating device based on the estimated accumulation.

Description

technical field [0001] The present invention relates to a method and system for regenerating particulate matter in an electrically heated oxidation catalyst. Background technique [0002] Oxidation catalyst units are provided in the exhaust system for the treatment of unburned gases and non-volatile hydrocarbons (HC) and carbon monoxide (CO). Oxidation catalysts oxidize HC and CO to form carbon dioxide (CO 2 ) and water (H 2 O). A heating system is provided in the exhaust system to create a high temperature environment for the oxidation process. Under various operating conditions, damage to the heating system may occur preventing proper operation of the oxidation catalyst. Therefore, there is a need to provide a method and system for preventing damage to the heating system to ensure the operation of the oxidation catalyst. Contents of the invention [0003] In an exemplary embodiment, a method of controlling a heating device of an oxidation catalyst is provided. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/027
CPCF01N3/103F01N3/2066F01N9/002F01N9/005F01N3/027F01N3/035F01N13/009Y02A50/20Y02T10/40
Inventor E·V·冈策M·J·小帕拉托尔M·阿达内斯
Owner GM GLOBAL TECH OPERATIONS LLC