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Semi-empirical engine-out soot model

A technology for internal combustion engines and particulate matter, which is applied in exhaust devices, exhaust treatment, and electronic control of exhaust treatment devices, and can solve problems such as increased back pressure in the exhaust system

Active Publication Date: 2020-03-03
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Back pressure in the exhaust system can increase as collected particulate matter accumulates in aftertreatment components

Method used

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  • Semi-empirical engine-out soot model
  • Semi-empirical engine-out soot model
  • Semi-empirical engine-out soot model

Examples

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Embodiment Construction

[0042]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 an application-specific integrated circuit (ASIC), electronic circuit, processor (shared, dedicated, or group) and memory, combinational logic circuit, and / or providing Other suitable components for the described functions. When implemented in software, the modules may be embodied in memory as a non-transitory machine-readable storage medium, which is readable by the processing circuit and stores instructions for execution by the processing circuit to perform the method.

[0043] For example, engine combustion in compression engines (eg, diesel engines) may be controlled according to a two-stage process. see figure 1 , the first curve 2 shows this two-stage combust...

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Abstract

The theme of the invention is Semi-empirical Engine-out Soot Model. The invention discloses a motor vehicle. An automotive vehicle includes an internal combustion engine that combusts an air / fuel mixture thereby generating exhaust gas containing particulate matter, and an exhaust after-treatment component that collects the particulate matter. A regeneration system burns off the collected particulate matter thereby regenerating the exhaust after-treatment component. A controller obtains a model of the combustion that is based on a kinetic controlled combustion phase and a mixing controlled combustion phase, and determines a point on the model with respect to current engine conditions that indicates an amount of the particulate matter in the exhaust gas.

Description

Background technique [0001] The various non-limiting embodiments described herein relate generally to motor vehicles and, more specifically, to exhaust gas treatment systems. [0002] The emission of particulate matter in the exhaust gas produced by internal combustion engines is regulated for environmental reasons. Accordingly, vehicles often include aftertreatment components, such as particulate filters, catalyzed soot filters, and adsorption catalysts, to remove particulate matter, soot, and other regulated components (eg, nitrogen oxides or NOx) from the exhaust stream. [0003] As collected particulate matter accumulates in aftertreatment components, back pressure in the exhaust system may increase. Various techniques, such as regeneration of aftertreatment components, have been developed to reduce back pressure, for example by burning off accumulated soot or other specific substances. To optimize regeneration timing, engine control systems typically utilize a soot mode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N3/025
CPCF01N9/002F01N3/025F01N3/021F01N3/023F01N9/005F01N2900/08Y02T10/40F01N3/0253B01D2279/30F01N2900/1606B01D46/84
Inventor D·E·爱德华兹G·斯提奇A·杜托M·孙
Owner GM GLOBAL TECH OPERATIONS LLC