Featured Research

from universities, journals, and other organizations

New Technology For Purifying Exhaust Gas From Diesel Engines

Date:
February 9, 2009
Source:
Risø National Laboratory for Sustainable Energy
Summary:
An increasing proportion of the Danish vehicle fleet consists of diesel vehicles. In urban areas diesel vehicles are causing air pollution (from carbon particles, nitrogen oxides (NOX)) and unburned hydrocarbons). As the European legislation tightens the rules for emissions, it will become more difficult and expensive to meet the requirements for particulate filters and DeNOx technologies.

Image of a small filter unit in a test installation of a 0.5-liter diesel engine at Dinex Emission Technology A/S.
Credit: Image courtesy of Risø National Laboratory for Sustainable Energy

An increasing proportion of the Danish vehicle fleet consists of diesel vehicles. In urban areas diesel vehicles are causing air pollution (from carbon particles, nitrogen oxides (NOX)) and unburned hydrocarbons). As the European legislation tightens the rules for emissions, it will become more difficult and expensive to meet the requirements for particulate filters and DeNOx technologies.

Related Articles


A new four-year project at Risø DTU is going to develop an effective method for purifying flue gases, especially exhaust gases from diesel engines. The project has received DKK 17 million from the Danish Council for Strategic Research (the Programme Commission on Sustainable Energy and Environment).

Electrochemical flue gas purification

Existing solutions to air pollution require the installation of particulate filters and either an SCR catalyst (Selective Catalytic Reduction) a NOx absorber or recirculation of the exhaust gas. This leads to additional expenditure when modifying diesel vehicles to be less polluting.

Electrochemical flue gas purification has a number of advantages over existing filters making it attractive to target this research at the car industry. Purification of carbon particles, toxic nitrogen oxides (NOX) and unburned hydrocarbons from the exhaust can all happen in the same filter unit.

Another advantage of using electrochemical methods is that it is not necessary to add other substances to the fuel. In addition the filter can be produced without the use of precious metals. The current SCR technology typically uses the nitrogen-containing urea as a reducing agent to remove NOx from the exhaust.

The purification of exhaust gas will therefore be conducted independently of the engine operation. This technology could lead to significant fuel savings compared with leading alternative technologies. The technology could also be applied in the purification of flue gas from power plants, and possibly in the shipping industry.

Expansion of the research group

The ambitious research project will involve the employment of five PhDs and two postdocs in the near future. Together with the present research team they are going to further develop the technology into a successful prototype for use under realistic conditions in a diesel engine.

The project is led by Kent Kammer Hansen, Senior Scientist in the Fuel Cells and Solid State Chemistry Division at Risø National Laboratory for Sustainable Energy, the Technical University of Denmark. Also participating in the project are the Department of Mechanical Engineering at DTU and the company Dinex Emission Technology A / S.


Story Source:

The above story is based on materials provided by Risø National Laboratory for Sustainable Energy. Note: Materials may be edited for content and length.


Cite This Page:

Risø National Laboratory for Sustainable Energy. "New Technology For Purifying Exhaust Gas From Diesel Engines." ScienceDaily. ScienceDaily, 9 February 2009. <www.sciencedaily.com/releases/2009/01/090130084125.htm>.
Risø National Laboratory for Sustainable Energy. (2009, February 9). New Technology For Purifying Exhaust Gas From Diesel Engines. ScienceDaily. Retrieved January 26, 2015 from www.sciencedaily.com/releases/2009/01/090130084125.htm
Risø National Laboratory for Sustainable Energy. "New Technology For Purifying Exhaust Gas From Diesel Engines." ScienceDaily. www.sciencedaily.com/releases/2009/01/090130084125.htm (accessed January 26, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Monday, January 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Florida Might Legalize Black Bear Hunting

Florida Might Legalize Black Bear Hunting

Newsy (Jan. 24, 2015) — A string of black bear attacks has Florida officials considering lifting the ban on hunting the animals to control their population. Video provided by Newsy
Powered by NewsLook.com
Dramatic Footage Shows Coast Guard Rescue Off Scottish Coast

Dramatic Footage Shows Coast Guard Rescue Off Scottish Coast

Reuters - News Video Online (Jan. 23, 2015) — Footage just released by the UK Coast Guard shows a dramatic helicopter rescue off the Scottish coast, where five men were plucked to safety after their fishing boat sank on Saturday. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Stunning Wingsuit Proximity Flying in Norway

Stunning Wingsuit Proximity Flying in Norway

Rumble (Jan. 23, 2015) — A collection of amazing shots from flights made in the Aurland Valley in Norway. How incredible is that? Credit to &apos;BASEjumper&apos;. Video provided by Rumble
Powered by NewsLook.com
Senate Agrees Climate Change Is Happening, Just Not On Why

Senate Agrees Climate Change Is Happening, Just Not On Why

Newsy (Jan. 22, 2015) — The Senate voted to confirm climate change is real, but some still weren&apos;t on board with the idea that humans are causing it. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins