Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Diesel particulate trap coated with noble metal and non-noble metal catalysts in different areas and preparation method thereof

A precious metal catalyst, particle trap technology, applied in mechanical equipment, machine/engine, engine components, etc., can solve the problem of low emission reduction effect in the low temperature and cold start stage of the engine, and achieve sustainable development and good light-off. Active and oxygen storage capacity, good strength effect

Active Publication Date: 2021-06-01
TONGJI UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with monolithic precious metal catalysts, this invention has a lower cost, but because the emission of non-precious metal catalysts in the low temperature cold start phase is far from that of coated noble metal catalysts, the actual emission reduction of the invention in the low temperature cold start phase of the engine no significant effect

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
  • Diesel particulate trap coated with noble metal and non-noble metal catalysts in different areas and preparation method thereof
  • Diesel particulate trap coated with noble metal and non-noble metal catalysts in different areas and preparation method thereof
  • Diesel particulate trap coated with noble metal and non-noble metal catalysts in different areas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Firstly, by analyzing the particle emission test data of a single diesel particulate filter coated with a noble metal catalyst and a non-precious metal catalyst, the catalytic performance of the noble metal catalyst and the non-precious metal catalyst is compared:

[0040] Passive regeneration: if figure 1 It can be seen that the catalytic efficiency of noble metal catalysts is slightly higher than that of non-noble metal catalysts under low temperature (250°C-450°C) passive regeneration environment. On the other hand, as the temperature rises, the catalytic performance of the non-precious metal catalysts is gradually equal to that of the noble metal catalysts.

[0041] Active regeneration: if figure 2 As shown, the non-noble metal DPF exhibits very good regeneration efficiency at 550 °C, and can achieve active regeneration at lower temperatures. In the whole stage of active regeneration, the catalytic efficiency of non-noble metal catalysts is significantly ahead of...

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 invention relates to a diesel particulate trap coated with noble metal and non-noble metal catalysts in different areas and a preparation method thereof. The particulate trap comprises a carrier, and the noble metal catalyst and the non-noble metal catalyst which are coated on the carrier, wherein the noble metal catalyst is coated at the front end of the carrier; and the non-noble metal catalyst is coated at the rear end of the carrier. Compared with the prior art, the diesel particulate trap coated with the noble metal and the non-noble metal catalysts in the different areas and the preparation method thereof provided by the invention have the advantages of reducing the cost while efficiently reducing the emission of particulate matters, and the like.

Description

technical field [0001] The invention relates to the technical field of diesel engine tail gas purification, in particular to a diesel engine particulate filter coated with noble metal and non-noble metal catalysts in different areas and a preparation method thereof. Background technique [0002] Diesel engines have good power and economy, and their proportion in the mobile source market is increasing. However, particulate matter (PM), one of the pollutants emitted by it, is seriously threatening the ecological environment and human health, and is the chief culprit for the continuous smog in many parts of the country. Generally speaking, there are two ways to purify diesel engine particulate matter: internal purification and external purification. Internal purification is to adjust the working state of the engine itself to reduce particulate matter emissions, such as supercharged intercooling, multi-valve, and electronically controlled high-pressure injection. , Exhaust gas ...

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): F01N3/022F01N3/035F01N3/20F01N3/28F01N13/00
CPCF01N3/022F01N3/035F01N3/20F01N3/2807F01N13/00
Inventor 楼狄明张允华齐博阳房亮谭丕强胡志远
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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