Impact of ethanol in ethanol blended gasoline on the spray characteristics of piezo actuated outward-opening injector = 피에조 외향 개방분사기의 에탄올 혼합연료 분무특성

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dc.contributor.advisorBae, Choong-Sik-
dc.contributor.advisor배충식-
dc.contributor.authorWang, Hua-
dc.contributor.author왕후아-
dc.date.accessioned2011-12-14T06:45:20Z-
dc.date.available2011-12-14T06:45:20Z-
dc.date.issued2009-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=327229&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/45732-
dc.description학위논문(석사) - 한국과학기술원 : 기계공학전공, 2009. 8., [ ix, 90 p. ]-
dc.description.abstractAs ethanol fuel is a very attractive alternative fuel for spark ignition engines, it does make sense to take a closer look into direct injection spark ignition engine with ethanol fuel. In addition, the piezo actuated outward-opening injector has been demonstrated to have high potential for fuel consumption reduction. Thus it does make sense to study the application of ethanol fuels on this new type of injector. In this study, the spray characteristics of piezo actuated outward-opening injector were investigated while applying ethanol blended gasoline with different ethanol concentration (20 %, 50 %, and 85 % ethanol) as well as commercial gasoline by means of injection quantity and injection rate measurement, PDA (phase Doppler anemometer), macroscopic Mie-scattering and shadowgraph techniques. Before these experiments, a specifically fuel delivery system has been developed for this study. A comparative analysis of blended fuels and gasoline sprays regarding injection parameters and spray characteristics is presented. The experimental results show the larger viscosity of ethanol fuel decrease injection quantity and injection rate during main injection stage slightly. Besides, spray front penetration was found be decreased while the increasing of ethanol’s portion. On the other hand, the edge vortex formation was enhanced by ethanol fuel. The Varies of volatility properties among different fuels have impact on spray atomization and vaporization process.eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectEthanol-
dc.subjectEthanol Blended Fuel-
dc.subjectPiezo Actuated Outward-Opening Injector-
dc.subjectSpray-
dc.subject에탄올-
dc.subject에탄올 혼합연료-
dc.subject피에조 외향 개방분사기-
dc.subject분무-
dc.subjectEthanol-
dc.subjectEthanol Blended Fuel-
dc.subjectPiezo Actuated Outward-Opening Injector-
dc.subjectSpray-
dc.subject에탄올-
dc.subject에탄올 혼합연료-
dc.subject피에조 외향 개방분사기-
dc.subject분무-
dc.titleImpact of ethanol in ethanol blended gasoline on the spray characteristics of piezo actuated outward-opening injector = 피에조 외향 개방분사기의 에탄올 혼합연료 분무특성-
dc.typeThesis(Master)-
dc.identifier.CNRN327229/325007 -
dc.description.department한국과학기술원 : 기계공학전공, -
dc.identifier.uid020074089-
dc.contributor.localauthorWang, Hua-
dc.contributor.localauthor왕후아-
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ME-Theses_Master(석사논문)
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