| 2017-BISW-67639 | |
| Ultra-lean combustion technologies have been regarded as a potential solution for the engine and power industries to meet the stringent emission regulations including oxides of nitrogen (NOx). Ultra-lean operation of internal combustion engines can reduce NOx emissions and improve their thermal efficiency. Unfortunately, ultra-lean combustion has serious challenges. Misfires can occur in the engine as a result of poor ignition. Such misfires and difficulties in ignition can lead to cycle-to-cycle variability, rough operation, reduction in efficiency, and increase in unburned hydrocarbon emissions, none of which are desirable. A solution to these problems would allow for the operation of internal combustion engines with reduced NOx emissions and improved engine thermal efficiency. Researchers from Purdue University have developed a technique to generate supersonic hot turbulent jets that can ignite ultra-lean fuel/air mixtures, which may not be able to ignite using current pre-chamber technologies. The supersonic hot jet makes it possible to burn ultra-lean mixture in combustion engines through the use of converging-diverging nozzles with a certain aspect ratio in the pre-chamber. Supersonic jet ignition improves combustion efficiency, reduces NOx emissions, and increases fuel economy. Advantages: -Improves combustion efficiency -Reduces NOx emissions -Increases fuel economy Potential Applications: -Gas engine manufacturers -Power supply industries |
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Oct 27, 2017
Utility Patent
United States
(None)
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Oct 31, 2016
Provisional-Patent
United States
(None)
(None)
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Purdue Office of Technology Commercialization 1801 Newman Road West Lafayette, IN 47906 Phone: (765) 588-3475 Fax: (765) 463-3486 Email: otcip@prf.org |