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    Detection of Pre-ignition Events using Deep Neural Networks

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    Thumbnail
    Name:
    Master thesis final draft.docx.pdf
    Size:
    2.442Mb
    Format:
    PDF
    Description:
    Nursulu Kuzhagaliyeva - Final Paper
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    Type
    Thesis
    Authors
    Kuzhagaliyeva, Nursulu cc
    Advisors
    Sarathy, Mani cc
    Committee members
    Castaño, Pedro cc
    Ghanem, Bernard cc
    Program
    Chemical and Biological Engineering
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2019-08
    Embargo End Date
    2020-09-18
    Permanent link to this record
    http://hdl.handle.net/10754/656779
    
    Metadata
    Show full item record
    Access Restrictions
    At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis will become available to the public after the expiration of the embargo on 2020-09-18.
    Abstract
    Abstract: Engine downsizing and boosting have been some of the most widely used strategies for improving engine efficiency in recent years. Several studies have offered significant departures from on-road pre-ignition to steady-state engine laboratory studies, necessitating more robust data-driven diagnostic tools that can identify pre-ignition events in real world environments. The goal of this study is to apply deep neural networks for pre-ignition (PI) detection, based on scientific data obtained from less expensive sensors (like lambda and low-resolution exhaust back pressure (EBP) data), as a replacement for high resolution in-cylinder pressure measurements. Two deep neural network (DNN) models are proposed and applied for classification of 221,728 combustion cycles from 18 experiments with varying EBP. DNNs combined convolutional neural networks (CNNs) for detection of repetitive patterns in array-structured data, and recurrent neural networks (RNNs) for modelling in a temporal domain. The first model was fed data from the principal component analysis (PCA); the second model eliminated this step and was focused on time series input. As a performance metric, the area under the curve (AUC) of the receiving operating curve (ROC) was used for comparison of the two models. The model’s accuracy was tested on 44,305 cycles. Based on the AUC-ROC metric, the former model was better able to differentiate between pre-ignition and normal combustion cycles.
    Citation
    Kuzhagaliyeva, N. (2019). Detection of Pre-ignition Events using Deep Neural Networks. KAUST Research Repository. https://doi.org/10.25781/KAUST-19AO0
    DOI
    10.25781/KAUST-19AO0
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-19AO0
    Scopus Count
    Collections
    Theses; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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