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dc.contributor.authorBoyd, Steven J.en_US
dc.date.accessioned2014-03-14T20:44:58Z
dc.date.available2014-03-14T20:44:58Z
dc.date.issued2006-08-28en_US
dc.identifier.otheretd-09082006-115915en_US
dc.identifier.urihttp://hdl.handle.net/10919/34970
dc.description.abstractDefining an operation strategy for a Split Parallel Architecture (SPA) Hybrid Electric Vehicle (HEV) is accomplished through calculating powertrain component losses. The results of these calculations define how the vehicle can decrease fuel consumption while maintaining low vehicle emissions. For a HEV, simply operating the vehicle's engine in its regions of high efficiency does not guarantee the most efficient vehicle operation. The results presented are meant only to define a literal strategy; that is, an understanding as to why the vehicle should operate in a certain way under the given conditions. The literature review gives a background of hybrid vehicle control publications, and without the SPA HEV addressed or a hybrid analysis based on loss calculations between engine only and hybrid modes, there is a need for this paper. Once the REVLSE architecture and components are understood, the hybrid modes are explained. Then the losses for each hybrid mode are calculated, and both the conversion and assist efficiencies are detailed. The conversion efficiency represents the amount of additional fuel required to store a certain amount of energy in the battery, and this marginal efficiency can be higher than peak engine efficiency itself. This allows electric only propulsion to be evaluated against the engine only mode, and at low torques the electric motor is more efficient despite the roundtrip losses of the hybrid system.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartSB_thesis_102006.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjecthybrid electric vehicleen_US
dc.subjectefficiencyen_US
dc.subjectsplit parallel architectureen_US
dc.subjectE85en_US
dc.subjectcontrol strategyen_US
dc.titleHybrid Electric Vehicle Control Strategy Based on Power Loss Calculationsen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairNelson, Douglas J.en_US
dc.contributor.committeememberEllis, Michael W.en_US
dc.contributor.committeememberReinholtz, Charles F.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09082006-115915/en_US
dc.date.sdate2006-09-08en_US
dc.date.rdate2006-11-13
dc.date.adate2006-11-13en_US


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