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

System and method for treating exhaust gas

A technology for exhaust pipes and catalytic converters, which is applied in exhaust gas treatment, diagnostic devices for exhaust gas treatment devices, exhaust devices, etc., and can solve large spaces, HC and CO emission faults, and inability to mix urea with exhaust gas, etc. question

Active Publication Date: 2015-05-27
BOSAL EMISSION CONTROL SYST
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these systems require a lot of space and often cannot adequately mix the urea with the exhaust gas before being introduced into the SCR
The bypassed part of the exhaust gas is not treated by the oxidation catalyst, which can lead to HC and CO emissions malfunctions during normal drive cycles

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
  • System and method for treating exhaust gas
  • System and method for treating exhaust gas
  • System and method for treating exhaust gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] exist figure 1 Among them, the exhaust pipe inlet 10 is arranged at the upstream end of the exhaust pipe 1 . At the upstream end, the exhaust duct can be connected to the engine outlet. In the exhaust pipe 1 , an oxidation catalyst 30 such as a diesel oxidation catalyst (DOC) is arranged such that further downstream is a selective catalytic reactor (SCR) 31 . The SCR can, for example, also be combined with a diesel particulate filter (DPF) or be provided with a particulate filter function (SCRF). A bypass duct 2 with a bypass inlet 22 and a bypass outlet 23 is arranged adjacent to and substantially parallel to the exhaust duct 1 . The bypass pipe 2 bypasses a part of the exhaust pipe 1 and bypasses a part of the DOC 30, but not the entire DOC. The bypass pipe 2 is arranged on one side of the exhaust pipe 1 . However, the bypass duct can also be arranged to extend at least partially or completely around the circumference of the exhaust duct 1 . The bypass duct can bas...

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

No PUM Login to View More

Abstract

The system for treating exhaust gas comprises an exhaust duct (1), a catalytic converter (30) arranged in the exhaust duct (1) and an injector (20) for injecting a substance into the system. The system further comprises a bypass duct (2) bypassing a section of the exhaust duct (1), wherein the bypass duct (2) is arranged such that only part of the catalytic converter (30) is bypassed.

Description

technical field [0001] The present invention relates to systems and methods for treating exhaust gas. More specifically, the present invention relates to systems and methods for treating exhaust from diesel engines. Background technique [0002] In the confined space available, for example in the exhaust system of a passenger car, different converters can be arranged in so-called close joints. These converters are, for example, oxidation converters for oxidizing carbon monoxide and hydrocarbons, and selective catalytic reactors (SCR) for converting nitrogen oxides in exhaust gases. In WO 2012 / 080585 an oxidation catalyst is placed directly upstream of a diesel particulate filter (DFP) and SCR combination. To support the catalytic reaction in the SCR, urea is injected into the confined space between the two catalysts. To mix the urea with the exhaust gas, a mixing device is provided between the two catalysts. However, such a mixing device increases the back pressure witho...

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): F01N3/20
CPCF01N3/106F01N3/2053F01N3/2066F01N3/035F01N2410/00F01N2510/0682F01N2550/10F01N2610/1453F01N13/0097Y02A50/20Y02T10/12F01N3/28
Inventor S·兹达特
Owner BOSAL EMISSION CONTROL SYST
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