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dc.contributor.advisorBrophy, Christopher M.
dc.contributor.authorRydalch, Andrew J.
dc.dateJune 2014
dc.date.accessioned2014-08-13T20:17:57Z
dc.date.available2014-08-13T20:17:57Z
dc.date.issued2014-06
dc.identifier.urihttp://hdl.handle.net/10945/42715
dc.descriptionApproved for public release; distribution is unlimiteden_US
dc.description.abstractIn 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.en_US
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.rightsThis 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, may not be copyrighted.en_US
dc.titleIgnition delay properties of alternative fuels with Navy-relevant diesel injectorsen_US
dc.typeThesisen_US
dc.contributor.secondreaderSathe, Sanjeev
dc.contributor.departmentMechanical and Aerospace Engineering
dc.subject.authorF-76en_US
dc.subject.authorHRDen_US
dc.subject.authorDSHen_US
dc.subject.authorCVCCen_US
dc.subject.authorignition delayen_US
dc.subject.authorpreburnen_US
dc.subject.authordiesel injectoren_US
dc.subject.authoralternative fuelsen_US
dc.description.serviceEnsign, United States Navyen_US
etd.thesisdegree.nameMaster of Science in Mechanical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


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