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Regeneration systems and methods for particulate filters using virtual brick temperature sensors

A particle filter and temperature sensor technology, which is applied in the regeneration system of the particle filter, can solve the problem that the temperature of the particle filter is not uniform

Active Publication Date: 2010-12-08
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the temperature of the particle filter may not be uniform throughout the particle filter

Method used

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  • Regeneration systems and methods for particulate filters using virtual brick temperature sensors
  • Regeneration systems and methods for particulate filters using virtual brick temperature sensors
  • Regeneration systems and methods for particulate filters using virtual brick temperature sensors

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Embodiment Construction

[0053] The following description is merely exemplary in nature and is in no way intended to limit the invention, its application or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify the same elements. As used herein, the term "module" refers to an application-specific integrated circuit (ASIC), electronic circuit, processor (shared, dedicated, or grouped) and memory that executes one or more software or firmware programs, Combinational logic circuits, and / or other suitable components that provide the described functionality.

[0054] The temperature at the backside of the catalyst brick of the particulate filter is estimated in accordance with the particulate filter regeneration system and method taught by the present invention. The temperature at the back of the catalyst bricks of the particle filter may represent the maximum temperature of the particle filter. The temperature is estimated based on the outlet temperature of t...

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Abstract

The invention relates to regeneration systems and methods for particulate filters using virtual brick temperature sensors. An exhaust control system includes a temperature sensor, a temperature estimation module, and an exhaust condition adjustment module. The temperature sensor measures an outlet temperature of an exhaust gas downstream from an emission reduction device. The temperature estimation module estimates a highest temperature of the emission reduction device. The exhaust condition adjustment module controls operation of the exhaust control system based on the highest temperature of the emission reduction device.

Description

technical field [0001] The present invention relates to exhaust systems for internal combustion engines and, more particularly, to regeneration systems and methods for particulate filters using virtual brick temperature sensors. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the invention. A portion of the inventor's work is described in the Background section, and aspects of this section, and aspects of this description that were not otherwise prior art at the time of filing the application, are neither expressly nor impliedly admitted to be prior art that would destroy the present invention . [0003] Engines produce hydrocarbons (HC), nitrogen oxides (NO x ) and particles. HC can be filtered by an oxidation catalyst. NO x Emissions can be reduced by a Selective Catalytic Reduction (SCR) system. Particles can be filtered by a particle filter. In some embodiments, a particulate filter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N3/027F01N3/035
CPCF01N2900/1602F02D41/029F01N3/035F01N9/002F02D41/1446F01N3/027F01N2900/0408F02D2200/0804Y02T10/47F01N2240/16Y02T10/22Y02A50/20Y02T10/12Y02T10/40
Inventor J·李M·C·卢克汉P·贾辛基维奇R·J·达尔R·米塔尔
Owner GM GLOBAL TECH OPERATIONS LLC