Navigation Links
Munich lab demonstrates diesel truck engine with barely measurable emissions
Date:12/6/2009

r consists of 21 percent oxygen and 78 percent nitrogen. Diesel fuel reacts with oxygen, producing carbon dioxide and water. This happens in a very fast reaction resulting in combustion chamber temperatures so high that the oxygen also starts to react with the nitrogen in the air, forming nitrogen oxides.

To combat this effect, modern diesel engines recirculate part of their exhaust back into the combustion chamber after cooling it down, together with the fresh air. In this mixture, carbon dioxide and water from the exhaust gases moderate the combustion process, keeping the temperature in check. As a result, fewer nitrogen oxides are formed, albeit at the price of increased soot production since the proportion of oxygen in the air-exhaust mixture is lower.

The TUM researchers designed the LVK test engine in such a way that the air-exhaust mixture is injected into the combustion chamber under high pressure. The engine's turbo-charger compresses the mixture to ten times atmospheric pressure (measured in bar) more than double the pressure mass-production vehicle engines can handle. Compressed in this way, the air-exhaust mixture contains enough oxygen for the diesel fuel to burn completely.

They coupled this innovation with another improvement, at the nozzle that injects diesel fuel into the combustion chamber. It atomizes the fuel into microscopic droplets, allowing them to burn completely. In larger droplets produced by conventional injectors, only the outer layer of fuel molecules are burned, like an onion whose first layer has been peeled. The resulting exhaust fumes envelop the fuel droplets, shielding them from the oxygen. The shell of exhaust gases gets increasingly dense with each "onion layer" that goes up in flames. Eventually it becomes practically impossible for oxygen to react with the fuel. The result: soot formation.

The NEMo injector nozzle atomizes diesel fuel at a pressure of over 3000 bar standard is 1800 b
'/>"/>

Contact: Markus Bernards
bernards@zv.tum.de
49-892-892-3388
Technische Universitaet Muenchen
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. LMU Munich researchers highly endowed with EU funding
2. Environmentally green beer: Munich brewing engineers research energy savings
3. Munich researchers discover new target for tailored antibiotics
4. 2 Alexander von Humboldt professorships go to LMU Munich
5. Munich researchers discover key allergy gene
6. Ben-Gurion University Alzheimers researcher demonstrates specific immune response to vaccine
7. Case Western Reserve University researcher demonstrates that messenger RNA are lost in translation
8. Gene therapy demonstrates benefit in patients with rheumatoid arthritis
9. Krumlauf Lab demonstrates modulation of gene expression by protein coding regions
10. Nature study demonstrates that bacterial clotting depends on clustering
11. Experiment demonstrates 110 years of sustainable agriculture
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Munich lab demonstrates diesel truck engine with barely measurable emissions
(Date:7/27/2014)... prevalence studies to date, researchers from the U.K. provide ... hepatitis C virus (HCV). Findings published in Hepatology, a ... Liver Diseases, indicate that genotype 1 is the most ... which one-third reside in East Asia. Genotype 3, at ... prevalent, followed by genotypes 2, 4, 6, and 5. ...
(Date:7/27/2014)... CANCER RESEARCH UK scientists at Barts Cancer Institute have ... make cancer therapy significantly more effective, according to research ... at Barts Cancer Institute, part of Queen Mary University ... adhesion kinase (FAK), signals the body to repair itself ... damaging DNA. When the researchers removed FAK from blood ...
(Date:7/25/2014)... people lived on the land now called California, and ... availability of plants they used for food, fuel, tools, ... maintain desired habitat and natural resources. , Frank Lake, ... Station, will lead a field trip to ... Society of America,s 99th Annual Meeting, in Sacramento, Cal. ...
Breaking Biology News(10 mins):Hepatitis C virus genotype 1 is most prevalent worldwide 2New drug target can break down cancer's barrier against treatment 2Fire ecology manipulation by California native cultures 2Fire ecology manipulation by California native cultures 3
... Health have discovered specific molecular and signaling events by ... showed that low levels of Vitamin D, comparable to ... the inflammatory cascade, while levels considered adequate did inhibit ... 1, 2011, issue of The Journal of Immunology ...
... an outbreak of airborne H5N1 influenza in humans needs to ... can safely continue H5N1 research and share the results among ... mBio , the online open-access journal of the American Society ... been at the center of heated discussions in science and ...
... are frequently reminded of the complex challenges Africa faces ... the sub-Saharan region. Dealing with hunger and famine ... and needs a global effort. Overcoming these challenges in ... and requires increased efforts in research and development. ...
Cached Biology News:Researchers discover how vitamin D inhibits inflammation 2Opinion: H5N1 flu is just as dangerous as feared, now requires action 2Opinion: H5N1 flu is just as dangerous as feared, now requires action 3Cutting-edge science creating solutions for African agriculture 2
(Date:7/28/2014)... PA & Boston, MA (PRWEB) July 28, 2014 ... collaboration agreements with two researchers to further develop potential ... deadly malignant brain tumor, in combination with their patented ... by ITI and Duke University, are based on the ... Chief, Division of Neurosurgery at The Preston Robert Tisch ...
(Date:7/28/2014)... DC (PRWEB) July 28, 2014 It’s a ... GI Bill benefits to further their post-secondary education are failing ... a study released this year. And according to an analysis ... this shortfall is veteran students’ uninformed choice of college majors, ... The details of the study: Some 51.7 percent of post-9/11 ...
(Date:7/28/2014)... STATION, Texas , July 28, 2014   The ... a 177-key, 4-star boutique hotel in the heart of The Atlas ... Photo - http://photos.prnewswire.com/prnh/20140725/130455 Photo ... within ATLAS , The Atlas ... rooms and suites, a sleek restaurant and bar, a wellness spa, ...
(Date:7/26/2014)... NY (PRWEB) July 26, 2014 ... provides key market data on the Canada Endoscopy ... millions of US dollars, volume (in units) and ... - High-End Endoscopy Visualization Systems, Mid-Range Endoscopy Visualization ... Full Report at http://www.marketresearchreports.biz/analysis/213254 . , The ...
Breaking Biology Technology:String of Collaborations Launch Immunomic Therapeutics’ Brain Tumor Program Pipeline 2String of Collaborations Launch Immunomic Therapeutics’ Brain Tumor Program Pipeline 3String of Collaborations Launch Immunomic Therapeutics’ Brain Tumor Program Pipeline 4Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 2Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 3Resume Place: To Choose the Best College Majors, Veterans Need Early Career Counseling, Data Shows 4Texas' Biocorridor Announces the Atlas Hotel, Centerpiece of Mixed Use Community for Biotech Industry 2Texas' Biocorridor Announces the Atlas Hotel, Centerpiece of Mixed Use Community for Biotech Industry 3Texas' Biocorridor Announces the Atlas Hotel, Centerpiece of Mixed Use Community for Biotech Industry 4Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 2Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 3Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 4Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 5
... Calif., Oct. 27 Beckman,Coulter, Inc. (NYSE: ... and marketer,of products that simplify, automate, and ... Garrett, Beckman Coulter,s chairman,president and chief executive ... Conference on Tuesday, November 4, 2008 at ...
... 27 Dr. Annie De Groot, CEO of,EpiVax, is ... about,the activation of natural regulatory T cells by IgG ... were published in the,October 8 issue of the prestigious ... Hematology., In an accompanying editorial, Rachel Caspi of ...
... Facility, NEW YORK, Oct. 27 NeoStem, Inc. ... pre-disease collection,processing and long-term storage of adult stem cells ... on a private placement financing,in the amount of $250,000. ... stem cell collection network in the New York City ...
Cached Biology Technology:Publication on 'Tregitopes' in Blood Journal of October 2008 2NeoStem Secures $250,000 in an Above Market Financing and Expands Its Relationship With New England Cryogenic Center, Inc. 2NeoStem Secures $250,000 in an Above Market Financing and Expands Its Relationship With New England Cryogenic Center, Inc. 3