Particle filter and method for the purification of an exhaust-gas flow

A particulate filter and exhaust valve technology, which is applied to the electronic control of exhaust treatment devices, exhaust devices, exhaust treatment, etc., can solve problems such as damage to exhaust system parts and adverse effects on engine performance, and achieve extended time , Improve the effect of emission

Inactive Publication Date: 2012-07-25
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With filters close to storage capacity, higher exhaust backpressure can adversely affect engine performance
Also, under conditions of high soot loading, the heat release generated during particulate filter regeneration can damage exhaust system components

Method used

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  • Particle filter and method for the purification of an exhaust-gas flow
  • Particle filter and method for the purification of an exhaust-gas flow
  • Particle filter and method for the purification of an exhaust-gas flow

Examples

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Embodiment Construction

[0018] The invention relates to the operation of an engine directing exhaust gas to a particulate filter. In a non-limiting example, the figure 1 Engine configuration shown. figure 2 and image 3 Provides a detailed view of the two particulate filters and the exhaust routing system that directs the exhaust gas through the two particulate filters. Such as figure 2 As shown, exhaust gas may substantially only flow through the first particulate filter when the stored particulate matter in the first particulate filter is less than a threshold amount. Such as image 3 As shown, exhaust may flow through the second particulate filter when particulate matter stored in the first particulate filter is greater than a threshold amount. Figure 4 A method is provided for operating an engine and purifying engine exhaust via first and second particulate filters.

[0019] refer to figure 1 , an internal combustion engine 10 comprising a plurality of cylinders controlled by an electro...

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PUM

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Abstract

Particle filters and a method for the purification of an exhaust-gas flow are described. In one example, exhaust gas is directed solely to a first particulate filter until a predetermined condition. Then exhaust gas is directed to a second particulate filter. One particulate filter may surround the other of two particulate filters. The particulate filters may provide filtered exhaust gas even when one filter becomes at least partially loaded.

Description

[0001] related application [0002] This application claims priority from German Patent Application No. 102011003019.0 filed January 24, 2011, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to particulate filters and methods for cleaning exhaust streams. In particular, the invention relates to the cleaning or filtering of exhaust gases of internal combustion engines of motor vehicles. Background technique [0004] To reduce exhaust emissions, particulates produced during fuel combustion, such as carbonaceous soot, may be retained by the filter. For this purpose, the exhaust gas flow passes through a filter in which particles accumulate. In order to reduce the particulate load and ensure a controlled level of exhaust backpressure, the filter must be periodically regenerated. [0005] With filters near storage capacity, higher exhaust backpressure can adversely affect engine performance. Additionall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/031F01N9/00
CPCF01N3/031F01N9/002F01N2560/08F01N2560/06F01N2013/045Y02T10/47F01N2900/1406Y02T10/20F01N13/017Y02T10/12Y02T10/40
Inventor Y·M·S·雅克布
Owner FORD GLOBAL TECH LLC
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