Ignition delay properties of alternative fuels with Navy-relevant diesel injectors
Approved for public release; distribution is unlimited === In support of the Navy’s Green Fleet Initiative, this thesis researched the ignition characteristics for diesel replacement fuels used with Navy-relevant fuel injectors. A constant-volume combustion chamber was used to simulate Top-Dead-Cent...
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Monterey, California: Naval Postgraduate School
2014
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ndltd-nps.edu-oai-calhoun.nps.edu-10945-427152014-11-27T16:19:56Z Ignition delay properties of alternative fuels with Navy-relevant diesel injectors Rydalch, Andrew J. Brophy, Christopher M. Sathe, Sanjeev Mechanical and Aerospace Engineering Approved for public release; distribution is unlimited In support of the Navy’s Green Fleet Initiative, this thesis researched the ignition characteristics for diesel replacement fuels used with Navy-relevant fuel injectors. A constant-volume combustion chamber was used to simulate Top-Dead-Center conditions of a diesel engine using an ethylene-air preburn with appropriate make-up oxygen. The injection conditions ranged from temperatures of 1,000 K to 1,300 K and densities has high as 14.8 kg/m3. Hydrotreated renewable diesel (HRD) and direct sugar-to-hydrocarbon (DSH) fuels were injected into the combustion chamber using a Sturman research injector, a Yanmar injector, and an Electro Motive Diesel (EMD) injector. The primary means of data collection was optical emission imaging of laser induced fluorescence of the fuel and broadband emission of the combustion event. The ignition delay was determined using high speed imaging at 50 kHz to determine the time delay between start of injection and start of combustion. The results of the study show that the ignition delay characteristics for the F-76/HRD 50/50 blend are compatible with those of conventional F-76 diesel fuel for both the Yanmar and EMD injectors at the conditions tested. The ignition delay characteristics of the F-76/DSH 50/50 blend fuel for the Yanmar injector were also compatible with those of F-76. 2014-08-13T20:17:57Z 2014-08-13T20:17:57Z 2014-06 Thesis http://hdl.handle.net/10945/42715 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, it may not be copyrighted. Monterey, California: Naval Postgraduate School |
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Approved for public release; distribution is unlimited === In support of the Navy’s Green Fleet Initiative, this thesis researched the ignition characteristics for diesel replacement fuels used with Navy-relevant fuel injectors. A constant-volume combustion chamber was used to simulate Top-Dead-Center conditions of a diesel engine using an ethylene-air preburn with appropriate make-up oxygen. The injection conditions ranged from temperatures of 1,000 K to 1,300 K and densities has high as 14.8 kg/m3. Hydrotreated renewable diesel (HRD) and direct sugar-to-hydrocarbon (DSH) fuels were injected into the combustion chamber using a Sturman research injector, a Yanmar injector, and an Electro Motive Diesel (EMD) injector. The primary means of data collection was optical emission imaging of laser induced fluorescence of the fuel and broadband emission of the combustion event. The ignition delay was determined using high speed imaging at 50 kHz to determine the time delay between start of injection and start of combustion. The results of the study show that the ignition delay characteristics for the F-76/HRD 50/50 blend are compatible with those of conventional F-76 diesel fuel for both the Yanmar and EMD injectors at the conditions tested. The ignition delay characteristics of the F-76/DSH 50/50 blend fuel for the Yanmar injector were also compatible with those of F-76. |
author2 |
Brophy, Christopher M. |
author_facet |
Brophy, Christopher M. Rydalch, Andrew J. |
author |
Rydalch, Andrew J. |
spellingShingle |
Rydalch, Andrew J. Ignition delay properties of alternative fuels with Navy-relevant diesel injectors |
author_sort |
Rydalch, Andrew J. |
title |
Ignition delay properties of alternative fuels with Navy-relevant diesel injectors |
title_short |
Ignition delay properties of alternative fuels with Navy-relevant diesel injectors |
title_full |
Ignition delay properties of alternative fuels with Navy-relevant diesel injectors |
title_fullStr |
Ignition delay properties of alternative fuels with Navy-relevant diesel injectors |
title_full_unstemmed |
Ignition delay properties of alternative fuels with Navy-relevant diesel injectors |
title_sort |
ignition delay properties of alternative fuels with navy-relevant diesel injectors |
publisher |
Monterey, California: Naval Postgraduate School |
publishDate |
2014 |
url |
http://hdl.handle.net/10945/42715 |
work_keys_str_mv |
AT rydalchandrewj ignitiondelaypropertiesofalternativefuelswithnavyrelevantdieselinjectors |
_version_ |
1716725710910914560 |