Transient optimization of a medium duty diesel engine equipped with a high pressure EGR and variable nozzle turbocharger

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dc.contributor Ashford, Marcus D.
dc.contributor Bittle, Joshua A.
dc.contributor Yoon, Hwan-Sik
dc.contributor Haskew, Tim A.
dc.contributor.advisor Puzinauskas, P.
dc.contributor.author Pennington, Justin Brett
dc.date.accessioned 2017-03-01T17:43:21Z
dc.date.available 2017-03-01T17:43:21Z
dc.date.issued 2016
dc.identifier.other u0015_0000001_0002318
dc.identifier.other Pennington_alatus_0004D_12733
dc.identifier.uri https://ir.ua.edu/handle/123456789/2651
dc.description Electronic Thesis or Dissertation
dc.description.abstract A medium-duty diesel engine is equipped with a High Pressure EGR (Exhaust Gas Recirculation) and a VNT (Variable Nozzle Turbine) and coupled to an AC Dynamometer. The control of the HPEGR and VNT will be optimized during steady state and transient engine operation to lower nitric oxide and particulate matter production as well as fuel consumption. Brake specific particulate matter, nitric oxide, and fuel consumption will be recorded with fast measurement systems capable of capturing results of transient events. A steady state map of engine speed and load will be used to calibrate initial VNT and EGR control. The calibration will be optimized with a defined formula using emissions production and fuel consumption. After a steady state VNT and HPEGR map is created, the map will be used as a baseline in transient engine operation. The dissertation will contain three parts. Firstly, VNT and HPEGR control assigned via the steady state table will be used during transient events, which will then be increased in speed from a 10 second to a 2 second event. Secondly, the VNT and EGR control will be manually configured in attempt to improve engine performance throughout the transient. Finally, the VNT and EGR control will be applied before the transient event to inspect the effect on engine performance.
dc.format.extent 286 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated.
dc.subject.other Mechanical engineering
dc.subject.other Electrical engineering
dc.title Transient optimization of a medium duty diesel engine equipped with a high pressure EGR and variable nozzle turbocharger
dc.type thesis
dc.type text
etdms.degree.department University of Alabama. Dept. of Mechanical Engineering
etdms.degree.discipline Mechanical Engineering
etdms.degree.grantor The University of Alabama
etdms.degree.level doctoral
etdms.degree.name Ph.D.


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