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Model-based control to manage edoc temperature

A model and emission control system technology, applied in electrical control, engine control, exhaust treatment, etc., can solve problems such as capacity impact, performance and life degradation

Inactive Publication Date: 2021-04-02
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the oxidation catalyst is overheated, its ability to oxidize HC and CO is affected, and its performance and life may deteriorate

Method used

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  • Model-based control to manage edoc temperature
  • Model-based control to manage edoc temperature
  • Model-based control to manage edoc temperature

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Embodiment Construction

[0032] For the purposes of promoting an understanding of the principles of the disclosure, reference will now be made to the embodiments illustrated in the drawings, and specific language will be used to describe the same. It should be understood, however, that no limitation of the scope of the present disclosure is thereby intended. The following description is merely exemplary in nature and is not intended to limit the disclosure, its application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. As used herein, the term module refers to processing circuitry, which may include application-specific integrated circuits (ASICs), electronic circuits, processors (shared, dedicated, or group) and memory modules that execute one or more software or firmware programs, Combinational logic circuits and / or other suitable components providing the described functionality.

[0033] Additiona...

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Abstract

A system and method of controlling an emission control system for treating exhaust gas in a motor vehicle having an internal combustion engine is described herein. The emission control system includes: an electric diesel oxidation catalyst (eDOC) device disposed in the flow of the exhaust gas, having an electric heating element; a temperature sensor disposed at the eDOC device and configured to detect a temperature of the exhaust gas; and a controller , which is configured to perform model-based control of an eDOC device based on a dual-nested closed-loop topology with an inner closed-loop control and an outer closed-loop control. The inner closed loop control is configured to control the power required by the eDOC device, and the outer closed loop control is configured to control the temperature of the eDOC device.

Description

technical field [0001] The present disclosure relates to exhaust systems for internal combustion engines, and more particularly to exhaust systems using a diesel oxidation catalyst (DOC) and a selective catalytic reduction (SCR) device for emission control. Background technique [0002] Exhaust gases from internal combustion engines, particularly diesel engines, are agglomerates containing, for example, carbon monoxide ("CO"), unburned hydrocarbons ("HC") and nitrogen oxides ("NOx") and constituent particulate matter ("PM") A heterogeneous mixture of gaseous emissions of phase materials (liquid and solid). Catalyst compositions, typically disposed on a catalyst support or substrate, are disposed in an engine exhaust system as part of an aftertreatment system to convert some or all of these exhaust constituents to non-regulated exhaust constituents. Exhaust gas treatment systems typically include one or more treatment devices, such as oxidation catalyst (OC) devices, selecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N9/00F01N11/00F01N3/10F01N3/20
CPCF01N3/2013F01N3/103F01N3/2066F01N3/2882F01N3/021F01N2240/16F01N2560/06F01N2900/0408F01N2900/0602F01N2900/08F01N2900/1404F01N2900/1411F01N2900/1602F01N13/009F02M26/05F02M26/47F02M26/49Y02A50/20Y02T10/12F02D41/0072F02D2200/0804
Inventor R·罗马纳托
Owner GM GLOBAL TECH OPERATIONS LLC