Laboratory researchers are helping companies characterize materials and test components as part of the industry's preparation for the new emissions mandates. The requirements will result in a 90 percent reduction in nitrogen oxide, or NOX, and particulate matter, or soot, released by diesel vehicles, from semi-trucks to cars.
At HTML, commercial users have put to use the center's state-of-the-art instruments that analyze products for durability, resistance to heat and stress, thermal conductivity, mechanical behavior and other properties.
"Environmental Protection Agency regulations are pushing emissions control technology very hard, so that engine and emissions control equipment manufacturers require access to very sophisticated tools to develop this technology. Fortunately, our user facilities are well equipped to help them," said Arvid Pasto, director of the HTML.
Diesel engine-maker Cummins used HTML's x-ray diffraction, raman spectroscopy and electron microscopy capabilities to better understand the properties of materials used in exhaust after-treatment systems. In addition to studying how catalysts can be adversely affected by sulfur and other gaseous exhaust components, Cummins and HTML worked together to characterize the fatigue life of cordierite diesel soot filters, which remove more than 98% of particulate emissions from diesel exhaust. These exhaust after-treatment devices are critical to meeting upcoming emissions requirements.
"Cummins utilizes HTML's world class capabilities in materials characterization as well as the research knowledge the HTML staff has obtained from working on diverse engineering challenges. HTML's efforts are matched by Cummins research and development resources, resulting in environmentally friendly production diesel engines that meet regulatory requirements while achieving state-of-the-art fuel efficiency and decreasing our oil dependence," said Roger England, Catalyst Elements Leader for Cummins, Inc.
In another project for Industrial Ceramic Solutions, based in Knoxville, Tenn., HTML used its scanning electron microscope to analyze material the start-up company was using to make ceramic-fiber diesel particulate exhaust filters. The original material did not function as well as competing products and had a tendency to crack. The tests connected the trouble to the fabrication process, and the company made changes that improved product performance.
"The sophisticated electron microscopy at HTML allowed our small business to literally look inside of the ceramic fiber filter media at thousands of times magnification," said Richard Nixdorf, ICS president and CEO. "This information led ICS to solutions that eliminated micro-cracking and moved our filter-media strength far beyond what the diesel exhaust filter application demanded." ORNL is managed by UT-Battelle for the Department of Energy.
Larisa Brass | EurekAlert!
Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously
17.01.2017 | Sonderforschungsbereich 668
Manchester scientists tie the tightest knot ever achieved
13.01.2017 | University of Manchester
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
17.01.2017 | Earth Sciences
17.01.2017 | Materials Sciences
17.01.2017 | Architecture and Construction