Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Mixing devices for selective catalytic reduction systems

A mixing device, selective technology, applied in the direction of mixers, exhaust devices, noise reduction devices, etc.

Inactive Publication Date: 2010-06-23
GM GLOBAL TECH OPERATIONS LLC
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This angle is less than 90 degrees

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mixing devices for selective catalytic reduction systems
  • Mixing devices for selective catalytic reduction systems
  • Mixing devices for selective catalytic reduction systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The following description is merely exemplary in nature and is not intended to limit the invention, its application or uses. It should be understood that throughout the drawings, like reference numerals indicate like or corresponding parts and features.

[0027] A mixing device for a selective catalytic reduction (SCR) system is provided in the exhaust pipe upstream of the SCR unit for mixing a urea solution with the exhaust gas. The mixing device includes a perforated body and a plurality of tabs extending outwardly from the perforated body. The apertured body has a first surface, a second surface, and a plurality of channels extending from the first surface to the second surface. The first surface and the second surface are parallel to each other and at an angle to the wall of the exhaust pipe. This angle is less than 90 degrees. This angle can be 0 degrees to reduce pressure drop. The mixing device of the present invention achieves better vaporization and distrib...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
angleaaaaaaaaaa
Login to View More

Abstract

A selective catalytic reduction (SCR) system includes an exhaust pipe for receiving an exhaust gas from an engine. A selective catalytic reduction (SCR) unit is provided downstream of the exhaust pipe. A first mixing element including a meshed body defines a first surface, a second surface, and a plurality of openings extending from the first surface to the second surface. The first surface and second surface are parallel to each other and define an angle relative to a flow direction of the exhaust flow. The angle is less than 90 degrees.

Description

technical field [0001] The present invention relates to selective catalytic reduction (SCR) systems for automotive exhaust systems, and more particularly to a mixing device for an SCR system that combines a reducing agent (such as urea) with exhaust gas before reaching the SCR catalyst. The two are mixed. Background technique [0002] The background statement provided herein is for the purpose of generally presenting the context of the disclosure. To the extent described in this Background section, the work of the presently named inventors and aspects of this description that do not constitute prior art as of the filing date are neither expressly nor implicitly regarded as directed to the present invention current technology. [0003] Selective catalytic reduction (SCR) systems have been used in motor vehicles to reduce nitrogen oxides (NO x ). The SCR system includes an SCR unit (eg, an SCR catalyst) in which SCR processing is performed. Typically, a liquid reductant, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/20B01D53/94
CPCF01N3/2892F01N3/2066F01N2610/1453Y02T10/24B01F5/0616B01F5/0473F01N2240/20B01F3/04049B01F5/0268Y02T10/12B01F23/2132B01F25/25B01F25/3141B01F25/4315
Inventor C·E·索尔布里格C·乔施S·H·埃尔塔里V·S·卡萨
Owner GM GLOBAL TECH OPERATIONS LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com