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Relevant bibliographies by topics / Internal combustion engine components / Dissertations / Theses

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Dissertations / Theses on the topic 'Internal combustion engine components'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Rangarajan, Bharadwaj. "Robust concurrent design of automobile engine lubricated components." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/18897.

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2

Talluri, Srikrishna. "Pretreatment of Small Four-Stroke Engine Components for No-Oil Hot Tests." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/36058.

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"Hot-tests" form a vital facet towards the end of the production line of modern automotive plants, where the condition of the engine is checked by running it for a short period of time, to ensure its performance under standard operating conditions. The duration of hot-tests for small engines varies from 20-75 seconds. In the conventional procedure, about 10-30 grams of lubricant (for pre-coating) is used with about 650ml of standard oil for engine testing. However, about 1-3 oz. of oil is lost per engine, as it cannot be sucked out of the crankcase after the hot tests. The loss of 1-3 oz.

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3

Jafari, Mohammad. "Condition monitoring and diagnostics for internal combustion engines using in-cylinder pressure and acoustic emission." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/205996/1/Mohammad_Jafari_Thesis.pdf.

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This thesis aims to provide greater understanding of engine operation through the application of in-cylinder pressure and engine structure-borne acoustic emissions, together with advanced data analysis such as cepstrum and principal component analysis. The analysis methods, coupled with the sensors, utilised in this research resulted in improved reliability in the tools and information that will be required in the development of more efficient and reliable engines. This research will be a useful resource for internal combustion engine researchers and industries.

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4

Armstrong, J. D. "Internal combustion engine inlet manifold development." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373798.

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5

Baker, Alan T. "Turbo-discharging the internal combustion engine." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/16337.

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This thesis reports original research on a novel internal combustion (IC) engine charge air system concept called Turbo-Discharging. Turbo-Discharging depressurises the IC engine exhaust system so that the engine gas exchange pumping work is reduced, thereby reducing fuel consumption and CO2 emissions. There is growing concern regarding the human impact on the climate, part of which is attributable to motor vehicles and transport. Recent legislation has led manufacturers to improve the fuel economy and thus reduce the quantity of CO2 generated by their vehicles. As this legislation becomes mor

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6

Dodd, Robert David. "Laser Ignition of an Internal Combustion Engine." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485846.

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The continued development of increasingly compact and efficient laser sources, advanced laser optics and optical techniques has provided the basis for significant steps forward in research towards practical proof-of-concept demonstration of LI in IC engines. Before this goal could be realised, however, research was needed to characterise the laser beam parameters required for LI under true engine conditions and to. demonstrate the feasibility of an optical system capable of delivering such laser beam parameters from the most' appropriate high power pulsed laser source available. This dissertat

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7

Zavier, Christian Chandrakumar. "Charge stratification for an internal combustion engine." Thesis, University of Canterbury. Mechanical Engineering, 1991. http://hdl.handle.net/10092/6418.

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The effect of charge stratification on the lean mixture combustion in a Ricardo E6 single cylinder, variable compression, spark ignition engine has been investigated. The charge stratification process involved injecting small amounts of pure methane gas into the engine cylinder through a modified spark plug just prior to ignition, at a relatively low pressure. Methane injection timing and methane injection duration (or injection rate) were controlled electronically and varied over a range of values. The charge stratification experiment was performed with two different types of inlet mixture. T

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8

Glasson, Neil. "Hydrogen fuelling of an internal combustion engine." Thesis, University of Canterbury. Mechanical Engineering, 1992. http://hdl.handle.net/10092/8047.

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This thesis traces and critically reviews recent developments in hydrogen fuelling of internal combustion engines. It reports the development of an improved fuelling system that has been tested on a Ricardo E6 variable compression spark ignition engine, in the Thermodynamics laboratory, Department of Mechanical Engineering at the University of Canterbury. The introduction of hydrogen to an internal combustion engine via the inlet manifold (external mixture formation), often results in the occurrence of pre-ignition. This is because hydrogen, with its low ignition energy and extreme lean limit

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9

Green, Jeremy James. "Taguchi methods in internal combustion engine optimisation." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52475.

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Thesis (MScEng)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Statistical experimental design techniques are powerful tools that are often approached with suspicion and apprehension by experimenters. The trend is to avoid any statistically structured and designed experimentation program, and to rather use the traditional method of following ones "gut feel". This approach, more often than not, will supply a satisfactory solution, but there is so much more information availablefor the same amount of effort. This thesis strives to outline the method and application of the Taguchi

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10

Bilel, Gaaloul. "Modeling of internal combustion engine control processes." Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86782.

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The control system has been suggested to convert the nonlinear model to a linearized plant model. Therefore, we characterized the engine model based on certain aspects and analyzed it accurately to fit in the system. Simulations were performed using the PID controller to regulate and maintain the output response while rejecting any input disturbance. An engine model of a control system shows an essential role in defining the correct parameters. Hence, Idle speed control is the principal of the highest confrontations for the automotive industry and developers as they were addressing many issues

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11

Ghelfi, Matteo. "Large Eddy Simulation in internal combustion Engine." Phd thesis, Matteo Ghelfi, 2013. https://tuprints.ulb.tu-darmstadt.de/3600/7/Diss_Matteo.pdf.

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Abstract Large Eddy Simulation in internal combustion Engine Dipl.-Ing Matteo Ghel� The internal combustion (IC) engine simulation is nowadays one of the most difficult proceeding during engine development. Simultaneously this is one of the most important phase because it leads to better acknowledgment of in-cylinder phenomena and suggests new method of emission reduction and control.\\ Large Eddy Simulation (LES) can help this process because of its instationary nature, in perfect agreement with motion, injection and combustion, typical instationary components in this kind of study.\\ Th

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12

Mears, Kevin S. "Water distillation using waste engine heat from an internal combustion engine." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36725.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.<br>Includes bibliographical references (leaf 36).<br>To meet the needs of forward deployed soldiers and disaster relief personnel, a mobile water distillation system was designed and tested. This system uses waste engine heat from the exhaust flow of an internal combustion engine to vaporize water for the purpose of removing impurities. The vapor is condensed back down to water in a finned condenser that experiences forced convection. The system pumps heat transfer oil through a 0.61 meter long, cross

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13

Chastain, John H. "Internal combustion engine cooling strategies theory and test /." Connect to this title online, 2006. http://etd.lib.clemson.edu/documents/1171042757/.

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14

Söder, Martin. "Numerical Investigation of Internal Combustion Engine Related Flows." Licentiate thesis, KTH, Strömningsfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124237.

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Internal combustion engines has been used for more than 100 years. The use of the abundant energy supply stored as hydrocarbon fueled unprecedented economic growth. The use of hydrocarbons increased the work output of human labor significantly, thus increasing the economy and prosperity. However, during the latter part of the twentieth century negative consequences of the internal combustion engine has been noticed. Initially the being emissions of local pollutants such as carbon monoxide, nitrogen oxides and unburnt hydrocarbons. These pollutants have to this day in the western world been red

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15

Saville, Allan Charles. "Numerical simulation of the Pivotal internal combustion engine." Thesis, University of Canterbury. Mechanical Engineering, 2002. http://hdl.handle.net/10092/6625.

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This thesis describes the development of a one-dimensional internal combustion engine simulation program for the Pivotal two-stroke engine. The Pivotal two-stroke engine has many features in common with the standard reciprocating piston engine, but differs in its novel kinematics, which are based around a four bar linkage. The new engine arrangement opens up many new design options and required a flexible and specific simulation tool for research and development. The initial project goals were to develop a simulation code, validate the code against engine data and develop a user interface for

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16

Kahraman, Erol Özerdem Barış. "Analysis of a hydrogen fueled internal combustion engine/." [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/enerjimuh/T000321.pdf.

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17

Wiseman, Marc William. "Spark ignition engine combustion process analysis." Thesis, University of Nottingham, 1990. http://eprints.nottingham.ac.uk/11131/.

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Cylinder pressure analysis is widely used in the experimental investigation of combustion processes within gasoline engines. A pressure record can be processed to reveal detail of charge burning, which is a good indicator of combustion quality. The thesis describes the evaluation of an approximate technique for calculating the mass fraction of the charge that has burnt; a novel approach for determining heat loss to the block; the development of a powerful system for combustion analysis; and the investigation of the correlation between the crank angle location of the 50% mass burnt and minimum

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18

Petreanu, Sorin. "Conceptual analysis of a four-stroke linear engine." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2084.

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Thesis (Ph. D.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xii, 126 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 122-126).

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19

Seward, Balaji B. "Small engine emissions testing laboratory development and emissions sampling system verification." Morgantown, W. Va. : [West Virginia University Libraries], 2010. http://hdl.handle.net/10450/11024.

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Thesis (M.S.)--West Virginia University, 2010.<br>Title from document title page. Document formatted into pages; contains xvi, 110 p. : ill. Includes abstract. Includes bibliographical references (p. 108-110).

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20

Chung, Nguyen Thai. "Pre-integrated non-equilibrium combustion-response mapping for internal combustion engine emissions." Thesis, University of Glasgow, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412952.

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21

Ranasinghe, D. J. "Modelling partially premixed turbulent combustion in a spark ignited internal combustion engine." Thesis, University of Cambridge, 2000. https://www.repository.cam.ac.uk/handle/1810/272095.

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22

Meyer, Jason. "Engine modeling of an internal combustion engine with twin independent cam phasing." Connect to resource, 2007. http://hdl.handle.net/1811/24538.

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Thesis (Honors)--Ohio State University, 2007.<br>Title from first page of PDF file. Document formatted into pages: contains 92 p.; also includes graphics. Includes bibliographical references (p. 92). Available online via Ohio State University's Knowledge Bank.

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23

Robinson, Kevin. "IC engine coolant heat transfer studies." Thesis, University of Bath, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275444.

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24

Esposito, Delia. "Torque Model Calibration of a Motorcycle Internal Combustion Engine." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15964/.

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Optimizing the performance of internal combustion engines increases complexity of control strategies and makes the calibration process long and expensive. The first activity of this Thesis explains the possibility of reduce tests on the bench saving in terms of working hours and operating costs. In particular, through MATLAB codes, it’s shown how extrapolating data of spark advance min and extramin from the spark advance dynamic sweep. The tests are usually demanded by the ECU supplier, who is responsible for the final calibration, but the calibrator engineer still has the task of checking

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25

DeFilippo, Anthony Cesar. "Microwave-Assisted Ignition for Improved Internal Combustion Engine Efficiency." Thesis, University of California, Berkeley, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3593810.

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<p> The ever-present need for reducing greenhouse gas emissions associated with transportation motivates this investigation of a novel ignition technology for internal combustion engine applications. Advanced engines can achieve higher efficiencies and reduced emissions by operating in regimes with diluted fuel-air mixtures and higher compression ratios, but the range of stable engine operation is constrained by combustion initiation and flame propagation when dilution levels are high. An advanced ignition technology that reliably extends the operating range of internal combustion engines will

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26

Greenman, Matthew David. "Design and construction of a miniature internal combustion engine." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10829.

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27

Van, Vuuren Christiaan Michael. "Modelling of internal combustion engine intake and exhaust processes." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52343.

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Thesis (MScEng)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: This thesis is concerned with unsteady, one-dimensional flow, which closely mimics those found in the manifolds of internal combustion engines. The physical equations describing problems of this nature are presented and some of the important concepts introduced. These equations and concepts were verified by comparison to published results. The Method of Characteristics (MaC) for unsteady one-dimensional flow with friction and heat transfer was used to analyse the gas flow through the inlet and exhaust systems of an

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28

Ismail, Fareed. "Variable Stroke Crank Shaft for an Internal Combustion Engine." Thesis, Cape Peninsula University of Technology, 2012. http://hdl.handle.net/20.500.11838/1279.

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Thesis submitted in fulfilment of the requirements for the degree of Master of Technology in Mechanical Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology, 2012<br>Our planet is continuously being depleted of its natural resources leading to a need to conserve energy and the environment. One of the major energy consumers is the conventional internal combustion engine. Many attempts have been made to make these conventional internal combustion engines more efficient focussing mostly on the combustion side of the engine. The focus of this study is on the mod

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29

Davies, Martin Clement. "Flow visualisation in an engine cylinder." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306353.

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30

Taylor, Oliver. "Improving the performance of internal combustion engines through lubricant engineering." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:4db8f32e-8260-4cff-ad57-08bfa0b9568e.

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Low friction lubricant development provides a worthwhile contribution to vehicle CO<sub>2</sub> emission reduction. Conventional low friction lubricant development focuses on empirical processes using out dated engine technology and old test methods. This strategy is inefficient and restricts the lubricant's potential. A new method proposed in the present research combines tribological simulations with rig, engine and vehicle tests. This approach provides insights undocumented until now. The contribution to CO<sub>2</sub> emission reduction from individual engine components on vehicle drive cy

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31

Bonnet, Baptiste. "Matching of Internal Combustion Engine Characteristics for Continuously Variable Transmissions." Thesis, Cranfield University, 2007. http://hdl.handle.net/1826/3205.

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This work proposes to match the engine characteristics to the requirements of the Continuously Variable Transmission [CVT] powertrain. The normal process is to pair the transmission to the engine and modify its calibration without considering the full potential to modify the engine. On the one hand continuously variable transmissions offer the possibility to operate the engine closer to its best efficiency. They benefit from the high versatility of the effective speed ratio between the wheel and the engine to match a driver requested power. On the other hand, this concept demands slightly diff

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32

Boulanger, Yves. "A microprocessor system for internal combustion engine PV diagram analysis /." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61266.

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An internal combustion engine was instrumented in view of developing automatic diagnosis methods based on the analysis of PV diagrams.<br>The pressure signal is unstable over successive cycles. Consequently, pressure must be averaged over several consecutive cycles to produce valid data.<br>Due to instrumentation problems the data obtained was insufficient to allow the development of diagnostics. The investigation reported in this work is thus limited to the development of a microprocessor-based system for the acquisition of pressure-volume data on high speed, spark ignition internal combustio

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33

Branney, C. "Development of optimisation methodologies for the internal combustion engine airbox." Thesis, Queen's University Belfast, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516869.

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34

Morgan, Tessa Joanne. "The modelling of internal combustion engine thermal systems and behaviour." Thesis, University of Nottingham, 2003. http://eprints.nottingham.ac.uk/12225/.

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The work described in this thesis concerns the continued development and application of a computational model to simulate the thermal behaviour of internal combustion engines. The model provides information on temperature and heat flow distributions within the engine structure, and on temperatures of oil, coolant and engine-out exhaust gas. Sub-models calculate friction levels, fuel flow rates and gas-side heat transfer, including the effects of exhaust gas recirculation (EGR), spark advance and turbocharging. The effects of auxiliary components such as a cabin heater, oil cooler, intercooler,

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35

SILVA, FILIPE TEIXEIRA DE FREITAS E. "DEVELOPMENT AND EXPERIMENTAL EVALUATION OF A ROTARY INTERNAL COMBUSTION ENGINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34206@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>No presente trabalho foi realizada a construção, montagem, revisão de projeto e avaliação experimental preliminar de um novo motor a combustão interna rotativo por ignição por centelha, que pode ser classificado como cat-and-mouse engine ou Twin-Rotor Piston Engine. Nesse motor, dois pares de deslocadores são montados sobre dois rotores, que giram em velocidade variável em dentro de uma câmara cilindrica, de forma a conferir uma variação da p

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36

Tsakiroglou, G. B. "Performance modelling of a one-stroke rotary internal combustion engine." Thesis, University of Surrey, 1988. http://epubs.surrey.ac.uk/848135/.

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The subject of this Thesis is the performance modelling and evaluation of the Rotary Internal Combustion One-Stroke Engine specified in Patent Application number PCT/GB 84/0048. A mathematical model, capable of simulating the various changes that take place during the cycle of the engine, has been formed and applied to the engine for testing its performance. Before forming the model the dimensions of the engine were calculated by considering the stressing of the main movable parts of the engine such as the driveshaft, radial sealing wall and rotary piston, as well as the surface area to volume

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37

Liu, Feilong. "Novel methods for internal combustion engine in-cylinder pressure estimation." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612402.

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38

Tailony, Rauf. "Internal Combustion Engine Cold Test Driveline Modeling, Analysis and Development." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564765172535669.

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39

Rodríguez, Pascual Daniel. "Internal Combustion Engine Calibration considering the Embedded Systems Sensor Accuracy." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300063.

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In recent years, the increasing economic, environmental and legal demands on internal combustion engines to reduce emissions and fuel consumption are a major challenge. A lot of effort has been put into achieve reliable methods of diagnosis, fault detection and monitoring to increase safety and efficiency in vehicles. A sensor that is not accurate can affect the overall performance of the system. Therefore, a method able to guarantee that the sensors are providing nominal measurements is required. In the process of engine calibration in the test cell intervene two types of sensors, the laborat

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40

Maass, Bastian. "The application of black box models to combustion processes in the internal combustion engine." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8490.

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The internal combustion engine has been under considerable pressure during the last few years. The publics growing sensitivity for emissions and resource wastage have led to increasingly stringent legislation. Engine manufacturers need to invest significant monetary funds and engineering resources in order to meet the designated regulations. In recent years, reductions in emissions and fuel consumption could be achieved with advanced engine technologies such as exhaust gas recirculation (EGR), variable geometry turbines (VGT), variable valve trains (VVT), variable compression ratios (VCR) or e

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41

Jääskö, Pontus, and Petter Morén. "Internal combustion engine durability monitor : Identifying and analysing engine parameters affecting knock and lambda." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-25498.

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This study has been performed at Powertrain Engineering Sweden AB (PES), a fully owned subsidiary of Volvo Cars Group, which is constantly working to develop and improve internal combustion engines. As part of this work, durability tests are performed to analyse the impact of wear on the engines. At present, there is a strong focus on visual inspections after the engines have undergone durability tests. PES wants to develop a method where collected data from these tests can be used to explain how the phenomenon of knocking and the control of lambda changes over time. The study analyses one spe

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42

Zhao, Yong. "Computer simulation of gas dynamics in engine manifolds." Thesis, University of Manchester, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318589.

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43

Faber, Peggy A. "A digital indicator diagram generation system for the Ricardo E6 engine /." Online version of thesis, 1987. http://hdl.handle.net/1850/10291.

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44

Huang, Xiaodan. "Coupling hybrid CFD models in simulating IC engine flows." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/13063.

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A novel concept which couples ID and 2D CFD models in a simulation of unsteady lC engine flows was investigated, and such a coupled model was developed. Two unified solution procedures which are capable of predicting mixed compressible and incompressible flow fields found in an engine were developed and comparatively studied. One is the pressure correction algorithm, the other is the block implicit algorithm. They provided platforms for the implementation of coupled models. Second order spatial and Euler backward time differencing schemes were adopted. The comprehensive comparative studies wer

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45

Conradie, P. A. (Petrus Alwyn). "The development of a dynamic engine-testing facility." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52509.

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Thesis (MScEng.)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: The last two decades have seen many changes within the automotive industry. Many advances have been made in the design, research and development of the internal combustion engine and technological progress made in the integrated-circuit and computer industry has resulted in the availability of reliable low-cost electronic components. These components have, over time, been incorporated into the very hearts of engines, thereby allowing for the accurate control of engine functions and processes to an extent that was p

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46

Gerke, Udo. "Numerical analysis of mixture formation and combustion in a hydrogen direct injection internal combustion engine." Göttingen Cuvillier, 2007. http://d-nb.info/987455966/04.

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47

Arning, Johannes. "Experimental studies of combustion control in a gasoline HCCI engine." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609247.

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48

Stewart, Marcus Clayton. "Design and analysis of a variable-compression, ratio internal-combustion engine : the Alvar engine concept." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43419.

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49

Luo, Xi. "Study of Periodical Flow Heat Transfer in an Internal Combustion Engine." Thesis, Wayne State University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10637206.

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<p> In-cylinder heat transfer is one of the most critical physical behaviors which has a direct influence on engine out emission and thermal efficiency for IC engine. In-cylinder wall temperature has to be precisely controlled to achieve high efficiency and low emission. However, this cannot be done without knowing gas-to-wall heat flux. This study reports on the development of a technique suitable for engine in-cylinder surface temperature measurement, as the traditional method is “hard to reach.” A laser induced phosphorescence technique was used to study in-cylinder wall tempera

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50

Reinholz, Bradley. "A cogging-torque-assisted motor drive for internal combustion engine valves." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57534.

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Internal combustion engine valve trains form the interface between the intake and exhaust systems and largely contribute to the overall engine performance, emissions and efficiency. Most modern engines use a camshaft to operate the valve train, but suffer from suboptimal performance since valve events cannot be dynamically altered during transient engine operation. Electromechanical valve actuation is a type of variable valve actuation that uses electromechanical actuators to replace the camshaft in an internal combustion engine. Electromechanical valve actuation promises to improve engine per

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