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Exhaust treatment regeneration control system

A technology of exhaust gas treatment and regeneration temperature, which is applied in the direction of exhaust gas treatment, electronic control of exhaust gas treatment device, exhaust device, etc. It can solve the problems of regeneration and regeneration event consideration, particle filter catalyst cracking, etc., and achieve the minimum regeneration time. the effect of

Active Publication Date: 2016-01-20
TENNECO AUTOMOTIVE OPERATING CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This rapid cooling can crack the particulate filter catalyst and cause additional delays in achieving full filter regeneration as the exhaust particulate filter must again reach the specified regeneration temperature zone
In addition, the electronic control system does not account for partial regeneration events where regeneration is interrupted due to exhaust gas temperatures falling above or below the designated regeneration temperature zone

Method used

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  • Exhaust treatment regeneration control system
  • Exhaust treatment regeneration control system
  • Exhaust treatment regeneration control system

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Embodiment Construction

[0015] Referring to the drawings, wherein like numerals designate corresponding parts throughout the several views, there is provided a system 20 for managing regeneration of an exhaust particulate filter 22 . Such as figure 1 As shown, the system 20 generally controls emissions of an internal combustion engine 24 . It should be appreciated that the internal combustion engine 24 may take many different forms, including a compression ignition engine or a spark ignition engine. An exhaust system 26 is generally connected in fluid communication with the internal combustion engine 24 for delivering exhaust gas away from the internal combustion engine 24 . An oxidation catalyst 28 may be placed in fluid communication with exhaust system 26 to provide emissions control by removing pollutants, such as carbon monoxide and nitrogen oxides, from exhaust passing through exhaust system 26 . It should be appreciated that where engine 24 is a compression ignition engine (eg, a diesel engi...

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PUM

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Abstract

A system and method for controlling the regeneration of an exhaust gas particulate filter. When regeneration is initiated, an outlet temperature of an exhaust gas oxidation catalyst and an outlet temperature of the exhaust gas particulate filter are detected. As part of a closed loop non-linear temperature targeting regime, the maximum of the outlet temperature of the exhaust gas oxidation catalyst and the outlet temperature of the exhaust gas particulate filter is set as a reference temperature. A regeneration temperature target is initialized and indexed based on a profile time and the reference temperature. As part of a closed loop fuel control regime at least one hydrocarbon dosing value is determined based on an exhaust mass flow, the reference temperature, and the regeneration temperature target.

Description

technical field [0001] The present disclosure relates to systems and methods for controlling regeneration of an exhaust particulate filter, such as a diesel particulate filter (DPF). More specifically, the present disclosure relates to systems and methods for managing filter regeneration using closed-loop nonlinear temperature targeting and fuel control. Background technique [0002] Exhaust particulate filters have become a common emission control device in most vehicles today, especially in vehicles powered by compression ignition engines. An exhaust particulate filter, commonly referred to as a diesel particulate filter (DPF), is typically installed in fluid communication with a vehicle's exhaust system when used to control emissions from compression-ignition diesel engines. The exhaust particulate filter functions to remove unburned hydrocarbons or soot from the exhaust passing through the exhaust system before it exits the exhaust system and enters the environment. So...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/023F01N3/035F01N9/00F01N3/025
CPCF01N9/002F01N3/0253F01N2610/03F01N2900/0411F01N2900/1602B01J38/04Y02T10/40F01N3/206Y02T10/12
Inventor 约翰·W·德乔治
Owner TENNECO AUTOMOTIVE OPERATING CO INC