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Dissertations / Theses on the topic 'Marine diesel engine'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Adams, Michael. "Stability Analysis of a Turbocharger for Marine Diesel Engine Service." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/42373.

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Rotor stability is essential to the life span of any piece of rotating machinery; it becomes increasingly critical in high-speed machinery such as turbochargers. Large turbochargers, such as those found in marine diesel propulsion engines where the rotor alone often exceeds forty pounds, require careful consideration regarding stability as well as load support during the bearing selection process. Logarithmic Decrement is the primary consideration for rotor stability. Commercial software is used to model and analyze a proven unstable turbocharger rotor. After confirming that the model exhib

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2

Wei, Fang. "A study on the improvement of marine diesel engine transient performance by means of air injection." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B36834841.

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3

Wei, Fang, and 魏昉. "A study on the improvement of marine diesel engine transient performance by means of air injection." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B36834841.

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4

Genner, Colin. "Microbial infections of marine diesel engine lubricating oils - their significance and control." Thesis, Cardiff University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235701.

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5

Griffiths, Denis. "Development and decline of the British crosshead type marine propulsion diesel engine." Thesis, Liverpool John Moores University, 1994. http://researchonline.ljmu.ac.uk/4947/.

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6

Jin, Wei. "CFD modelling and validation of a large 2-stroke marine diesel engine." Thesis, University of Strathclyde, 2014. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25989.

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With the increased understanding of the physical processes of the large 2-stroke marine engine and the corresponding numerical models as turbulence, injection, evaporation and chemical combustion, it has become realisable to investigate the whole working processes using Computational Fluid Dynamics (CFD). However, CFD itself needs to be validated to produce reliable results. The focus of this thesis is on the CFD validation of the large 2-stroke marine diesel engine working processes. The turbulence models and the wall functions in the CFD solver were firstly tested using two basic 2D cases to

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7

Isaias, Loizos. "Performance simulation of a medium speed diesel engine under optimal and fault conditions." Thesis, University of Newcastle Upon Tyne, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388759.

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8

Bruce), Laurence Ronald B. (Ronald. "The effect of lubrication system and marine specific factors on diesel engine emissions." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/12110.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.<br>Includes bibliographical references (p. 63-64).<br>by Ronald B. Laurence, Jr.<br>M.S.

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9

Zhou, Qing. "Friction and wear of piston ring : cylinder liner contact in a large marine diesel engine." Thesis, Brunel University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393177.

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10

Yum, Kevin Koosup. "Modeling and Simulation of Transient Performance and Emission of Diesel Engine : Pseudo Bond Graph Approach to Modelling the Thermodynamic Process." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19793.

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Internal combustion engines have been very successful as power producers in the marineapplicaiton due to their simplicity of construction, high efficiency and long track of proven technology. However, as the environmental foot print of industry is gaining more and more attention, the emission from the engine must be reduced. The main emission fromthe diesel engines are namely nitrogen oxide(NOx) and particulate matter(PM). Sulfuroxide(SOx) and carbon dioxide emission(CO2). In the marine industry, the transientemission has not been brought to the table of discussion when it comes down to thereg

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11

Jawara, Lamin. "Prediction of DI-CI Engine Performance and Emission Characteristics of Varying Renewable Diesel Fuels with Experimental Results from Marine Diesel fuel." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16234.

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This paper discusses finding of combustion research carried out using Ricardo hydra research diesel engine with varying renewable fuels. The primary fuel of investigation is rapeseed methyl ester (RME) and marine diesel fuel (MDO) was used as the primary reference fuel (PRF). The results of the PRF have been acquired by experiment and have been used to characterize the heat release rates, brake fuel conversion efficiency (BFCE), brake specific fuel consumption (BSFC), brake fuel energy consumption (BSEC), exhaust temperature; Oxides of nitrogen (NOx), carbon monoxide (CO), carbon dioxide (CO2)

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12

LION, SIMONE. "Waste heat recovery with Organic Rankine Cycle (ORC) in marine and commercial vehicles Diesel engine applications." Doctoral thesis, Università degli Studi di Trieste, 2018. http://hdl.handle.net/11368/2920081.

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Heavy and medium duty Diesel engines, for marine and commercial vehicles applications, reject more than 50-60% of the fuel energy in the form of heat, which does not contribute in terms of useful propulsion effect. Moreover, the increased attention towards the reduction of polluting emissions and fuel consumption is pushing engine manufacturers and fleet owners in the direction of increasing the overall powertrain efficiency, still considering acceptable investment and operational costs. For these reasons, waste heat recovery systems, such as Organic Rankine Cycles (ORC), are undergoing a peri

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13

Elfridsson, Jon. "3D parameterized FEM modelling of a piston ring in a marine diesel engine : a simulation approch using FEM." Thesis, Umeå universitet, Institutionen för fysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-38315.

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The piston ring in a marine two-stroke diesel engine operates in demanding conditions, involving high temperatures and pressures. Its main purposes are to seal the combustion chamber of the engine, minimize the frictional contact against the cylinder liner and transfer heat from the piston. The development of new piston ring designs for marine diesel engines is mainly based on engineering knowledge and expertise but is somewhat unstructured. A new method which may be used to overcome this lack of structure is to simulate the working conditions for the piston ring. This is the main objective of

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14

Moro, Lorenzo. "Structure borne noise due to marine diesel engines: experimental study and numerical simulation for the prediction of the dynamic behaviour of resilient mounts." Doctoral thesis, Università degli studi di Trieste, 2015. http://hdl.handle.net/10077/11114.

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2013/2014<br>Gli alti livelli di comfort che sono richiesti oggigiorno a bordo di navi da crociera e mega-yachts, portano i progettisti a concentrare la loro attenzione sul problema del rumore strutturale. I motori diesel quattro tempi che sono installati a bordo nave come motori principali o diesel generatori, sono tra le principali sorgenti di rumore strutturale. Per questa ragione, al fine di ridurre l’energia vibrazionale generata da queste sorgenti e trasmessa, tramite le strutture nave, ai locali alloggio, i motori diesel sono sospesi mediante elementi resilienti. Tali elementi resilient

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15

Edfors, Jonas, and Robin Bremberg. "Liquid Natural Gas : A study of the environmental impact of LNG in comparison to diesel." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-103569.

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Liquefied Natural Gases (LNG) has been an alternative fuel in the marine industry for several years, but lately, the amount of ships that have been powered by methane has increased a lot. Some of the reasons for this is because LNG does not contain any sulfur and releases less nitrogen oxides than traditional maritime fuels. In this essay, LNG will be compared to diesel from an environmental perspective with focus on CO2 emissions and its equivalents. International Maritime Organization (IMO) implemented Energy Efficiency Design Index (EEDI) requirements that adjusts how much CO2 is allowed in

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16

Gaudart, Louis. "Incidences des configurations de fonctionnement de navires militaires sur la suralimentation a deux etages de leurs moteurs diesel de propulsion pag btc." Nantes, 1987. http://www.theses.fr/1987NANT2061.

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17

Galbraith, John. "Sequential turbocharging of marine diesel engines." Thesis, Glasgow Caledonian University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278624.

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18

George, Sam. "Characterization of in-use emissions from marine engines." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3339.

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Thesis (M.S.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains xiv, 132 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 108-112).

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19

Moore, David John. "Condition monitoring of diesel engines." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/condition-monitoring-of-diesel-engines(629ec6ef-d54b-449a-90c1-32ac0eee8bcf).html.

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Reliability of emergency Diesel generator systems, or indeed any Diesel engines in a wide range of fields is critical. Traditional maintenance procedures for these engines follow time based or statistical based methods. Due to the wide variety of uses of Diesel engines it is not possible for these forms of maintenance to be as effective as condition based monitoring. Condition based monitoring holds many advantages over traditional maintenance methods. It allows for the earlier detection and diagnosis of a fault and allows for planned maintenance work avoiding costly and unexpected downtime. I

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20

Agrawal, Harshit. "Analyses and impacts of emissions from marine engines." Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?did=1974821941&sid=1&Fmt=2&clientId=48051&RQT=309&VName=PQD.

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21

GIANOGLIO, BERNARDI MARCO. "In Cylinder NOx Control Technologies for Marine Diesel Engines." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2497417.

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In this work different internal and external EGR strategies, combined with extreme Miller cycles, were analyzed by means of a one dimensional CFD simulation code for a Wartsila 6 cylinder, 4 strokes, medium speed marine diesel engine, to evaluate their potential in order to reach the IMO Tier 3 NOx emissions target. By means of extreme Miller cycles, with Early Intake Valve Closures (EIVC up to 100 crank angle degrees before BDC), a shorter compression stroke and lower charge temperatures inside the cylinder can be achieved and thanks to the cooler combustion process, the NOx specific emissio

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22

Andrén, Filip, and Olav Borgström. "Common Rail - En bränslebesparingsstudie : – En utvärdering av ett nyinstallerat bränsleinsprutningssystem på isbrytaren Ymer." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-50558.

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Följande studie är gjord på uppdrag av Sjöfartsverket. I studien undersöktes hur en installation av ett Common Rail-system ombord på isbrytaren Ymer påverkat bränsleförbrukningen samt utsläppen av kväveoxider. Rådata som loggats ombord på Ymer har analyserat och bearbetat. Material och information från tillverkare, besättning samt teknisk chef på Sjöfartsverket, Albert Hagander har använts under studien. Tillsammans med uppmätta mätdata och tidigare gjord litteraturstudie stöds resultaten i studien. Det är ingen slump att system av Common Rail-typ redan är tillämpat inom de flesta branscher så

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23

Nuszkowski, John. "Staten Island ferry emissions reduction." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4169.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains xi, 94 p. : ill. (some col.), col. map. Includes abstract. Includes bibliographical references (p. 74-79).

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24

Sæle, Hans Steffen Ravnanger. "Variable Inlet and Exhaust Valve Operation in Medium Speed Marine Diesel Engines." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11622.

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This thesis was successfully completed through five main parts. First a lingering issue of great importance was dealt with in order to start the use of the provided simulation model. This task was imperative to accurate simulation results as it aimed to ensure matching definitions between simulation software and the engine manufacturer. A satisfactory result was quickly obtained. Secondly some sections are spent mapping the potential performance benefits of a camless valve train. This part has its reference in automotive industry and gives strong indications that great potential lies in valve

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25

Ushakov, Sergey. "Particulate matter emission characteristics from diesel engines operating on conventional and alternative marine fuels." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20042.

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The awareness of adverse health effects associated with diesel aerosol emissions has generated a great public and academic interest in studying various aerosol-producing sources. While automotive industry has achieved significant progress in controlling and reducing particulate matter (PM) emissions, there was only a very limited attention paid to ship transport, i.e. to marine diesel engines (MDE). Nowadays, shipping is one of the biggest contributors of PM emissions to the atmosphere, although is still lacking attention from PM legislators and diesels aerosol researchers. This thesis is focu

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26

Landet, Ragnar Dystvold. "PM emissions and NOx-reduction due to water in fuel emulsions in marine diesel engines." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11590.

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The goal of this M.Sc. thesis has been to study the NOx-reduction measure: water in fuel emulsion. There has been done a literature study to look into the function, system components and effect upon NOx reduction, specific fuel oil consumption and other emissions. The operational aspects of water in fuel emulsion have been looked into. It has been found that running on water in fuel emulsion does not have many operational problems. However there is a need for having a "fail safe" system that can shut down the water supply if the engine has a failure and if the dosage system fails to give the r

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27

Moussa-Nahim, Hassan. "Contribution à la modélisation et à la prédiction de défaillances sur les moteurs diesel marins." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4307.

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Ce travail présente un modèle orienté vers le développement d’un simulateur pour un moteur diesel marin. Dans le but d’avoir un simulateur qui répond aux besoins du moteur étudié au niveau de l’efficacité, la rapidité, et la prise en considération des défauts, le modèle étudié est basé sur des modélisations physiques, semi physique, empirique, mathématique et thermodynamique. Le modèle du moteur est divisé en plusieurs sous-modèles chacun présente un système réel, ces systèmes sont : le refroidissement, la lubrification, l’air, l’injection, la combustion et les émissions. Les sous-modèles et l

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28

Holmström, Johnny. "GOVERNOR ELECTRONICS FOR DIESEL ENGINES : High availability platform for real-time control and advanced fuel efficiency algorithms." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-20282.

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Fossil fuel is a rare commodity and the combustion of this fuel results in negative environmental effects. This paper evaluates and validates the electronics needed to run intelligent algorithms to lower the fuel consumption for commercial vessels. This is done by integrating advanced fuel saving functions into an electronic device that controls the fuel injection of large diesel engines, as known as a diesel engine governor. The control system is classified as a safety critical system. This means that the electronics needs to be designed for fail safe operation. To allow for future research a

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Chu, Van Thuy. "Measurement and assessment of ship emissions." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/126390/3/Thuy%20Chu%20Van%20Thesis.pdf.

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This project developed an in-vessel emission measurement system and emission evaluation protocol to aid air quality modellers, government regulators and industry. The work enables characterisation of emissions emitted in different ships using heavy fuel oil and operating under a full range of conditions such as at-berth, manoeuvring and ocean-going. Results from the project will improve the quality of input data to air quality modellers who assess the impact of ship emissions on coastal and port areas.

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Li, Ta-Men, and 李大民. "A Study of Serious Accident on Marine Diesel Engine Assembling of Newbuilding vessels." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/61244212895164201184.

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碩士<br>國立臺灣海洋大學<br>商船學系<br>102<br>About 90% of merchandise in the global trade is being transported by around 70,000 vessels of various make. A general consensus among industrialists is that if there is no vessel shipping, half of the world's population would starve and the other half would freeze. According to statistics compiled by Clarkson, well-known international organization that conducts studies of maritime affairs, worldwide purchase orders for newbuilding in 2013 was 2,206 ships (144.8 million DWT). Moreover, according to Taiwan shipping network reports, more than 85% of new ships were

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PAN, HSIEN TE, and 潘顯德. "Study of Common Rail High Pressure Fuel Injection System for Large Marine Diesel Engine." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/00825578235732651523.

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碩士<br>國立高雄海洋科技大學<br>輪機工程研究所<br>104<br>In response to increasingly tough international environmental regulations and rising oil prices, the development of marine diesel engines, worth exploring in depth for. At present the mainframe manufacturers are mustering their efforts to develop high-performance fuel-efficient, saving energy and environmentally friendly hosts. The heart is the host of the high-pressure fuel injection system, fuel injection performance upgrade if the better to promote as much as possible to achieve complete combustion of fuel, so that more output horsepower can save fuel a

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32

Chung, Hung-Pang, and 鍾宏邦. "A Study of Serious Accident on Crank Pin Damage for Marine Diesel Generator Engine." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/2ddkzc.

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碩士<br>國立臺灣海洋大學<br>輪機工程學系<br>106<br>The ship generators provide the main source of electrical power for deriving not only main engine and auxiliary engine, such as pumps, motors, boilers, purifiers, steering gear system, but also communication, navigation and lights. For the case as the deterioration or breakdown of the generators, the main engine maybe stopped such that the incidents as collision, stranding, wreck and so on. Hence, the ability of marine engineers is to effectively identify the causes of failure. Moreover, the marine engineers should solve and improve reliability of equipment t

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Hsien, You-jen, and 謝佑人. "Investigation on the Purification of Scrubbing Wastewater derived from the Exhaust of Marine Diesel Engine." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/61882657596815273488.

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碩士<br>國立成功大學<br>系統及船舶機電工程學系碩博士班<br>96<br>Prevention is general accepted as the better policy than mitigation to improve air quality. However, in the practice, improvement of the Engine emission is both expensive and time consuming compared with the installation of Wet Scrubber which has many advantages such as low initial cost, ease O＆M…. Conventionally, Wet Scrubber is utilized in cement plants and thermal power plants for the removal of dust, but demand for the removal of multiple air pollutants as well，has been increased recently. From the integrated control’s point of view, Wet Scrubbing w

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Jahn-Hwa, Yang, and 楊建華. "A study on the effects of using low sulphur marine gas oil to the fuel injection pump of marine diesel engine." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05636224174992080444.

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碩士<br>國立臺灣海洋大學<br>商船學系所<br>100<br>This research report is made for a brief introduction in the updated MARPOL Regulations and Port Regulations of the Emission Control Areas (ECA) and focusing on the plunger and barrel’s failure of fuel injection pumps of diesel engine after short operation by using low sulphur marine gas oil when ship berthed in the restricted ports of ECA, which also increasing hard operation for the shipping company. Based on technical issues from different diesel engine manufacturers and the U.S. Power Research Inc. and concerned technical papers from other countries with

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TE, HSUEH CHIN, and 薛進德. "The Simulation Analysis of Viscosity Effect on the Field for a Marine Diesel Engine Injection Nozzle." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/88975979058863190973.

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碩士<br>國立高雄海洋科技大學<br>輪機工程研究所<br>96<br>The diesel oil fuel injection system is a key point factor of an engine revolving efficiency. So, there is a need to study and explore the system. In order to discuss the efficiency of diesel oil engine, the main purpose is to control the fuel atomization quality including the size of the atomized droplets, penetration, the droplets of distributed range, and its characteristics. The goal of this research is using the simulation method to explore the diesel oil droplets pitch off time, diesel oil droplet velocity, characteristics on the field under the vari

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Huang, Yu Ru, and 黃韻如. "Heat Transfer of Orthogonal Tube Fitted with Ribs in Reciprocating Motion for Marine Diesel Engine Piston Cooling Application." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/18367786906815590576.

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碩士<br>國立成功大學<br>造船及船舶機械工程學系<br>88<br>The fuel economy plays the most important requirement for a marine propulsion plant as it has the decisive influence on the operating cost of a ship. In general the improvements of the propulsive and engine efficiencies could reduce the fuel consumption. As an attempt to enhance the competitive advantages for the marine transportation business, the use of low quality and high viscosity diesel fuel and the high temperature as well as pressure thermodynamic cycle has been a global trend for the development of marine diesel engine. The first sta

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馬豐源. "A Study of Application and Optimization of Control Parameters of Electronic Governor for Marine Low Speed Diesel Engine." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/18374220007422601613.

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碩士<br>國立海洋大學<br>航運技術研究所<br>83<br>This thesis is to present, "A Study of Application and Optimization of Control Parameters of Electronic Governor for Marine Low SpeedDiesel Engine"，（電子調速器應用於船舶低速柴油主機及其控制參數合理化之探討）The purpose of this thesis is to estimate the control parameters with simple method so that unneccssary trial and error testing of the newly fitted engine or the overhauled engine may be eliminated. 　　In the application of Electronic governor for marine low speed diesel engine, the major function is to keep the engine running safely and effectively under the desired revolution for a gov

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Chuang, Lun-Kang, and 莊倫綱. "Toxic Effect of the Lindane, Chlordane, Super Diesel Oil and Waste Engine Oil on the Marine Copepod Tigriopus japonicus." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/99575073285864353440.

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碩士<br>國立臺灣大學<br>漁業科學研究所<br>96<br>The Taiwan ecosystem continuously all exposure in the agricultural chemicals, not only causes to harm the fresh water basin system, but also influence the coast sea area ecosystem. Taiwan also is located the Ship transportation key position. On the ship is bringing the massive diesel oil as well as the engine oil. These oil classes possibly can release because of the accident, or intentional discarding, has become another kind of potentiality oil class pollution origin. This study aimed to investigate the effects of acute and chronic exposures of lindane, chlor

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"Комп'ютерне забезпечення пошуку оптимальних параметрів системи автоматичного регулювання обертів судового дизельного двигуна". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/64444.

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Аналіз результатів свідчить про працездатність комп'ютерної моделі та можливості її використання для налагодження існуючих CAP дизельних двигунів. Крім того, програма може бути застосована при проектуванні CAP дизельних двигунів.

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Sautermeister, F. A., Martin Priest, and M. F. Fox. "FTIR lubricant analysis: Concentration of dispersed sulphuric acid." 2014. http://hdl.handle.net/10454/10782.

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No<br>This paper aims to establish the acid concentration of finely dispersed droplets in hydrocarbon oils. Small quantities of aqueous sulphuric acid (H2SO4) were found to be trapped within hydrocarbon shells, making them inaccessible for concentration evaluation by titration. Fourier transform infrared spectroscopy (FTIR) used in the attenuated total reflection mode (ATR; FTIR-ATR) was applied to study the reaction products of squalane, C30H62, and an API Group I base oil with various concentrations of aqueous H2SO4. The absorbance comparison usually used for estimating acid concentration

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BAIAMONTE, LIDIA. "Rivestimenti protettivi per valvole di motori navali." Doctoral thesis, 2016. http://hdl.handle.net/11573/985808.

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Intake and exhaust valves operating in diesel engines for naval propulsion suffer from several problems due to the combined and synergistic effects of mechanical stresses and a chemically harsh environment. Degradation mechanisms like wear and corrosion act on different sections of the valve, with the result that each part undergoes a different kind of damage. The present work particularly focuses on degradation phenomena such as low temperature corrosion and erosive wear on the stem; hot corrosion on the bottom of the head of the valve; wear on the seat ring. In order to prevent the valves fr

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Grant, Michael. "New modelling and simulation methods to support clean marine propulsion." Thesis, 2021. http://hdl.handle.net/1828/13308.

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The marine industry has increased its adoption of pure-electric, diesel-electric, and other non-traditional propulsion architectures to reduce ship emissions and fuel consumption. While these technologies can improve performance, the design of a propulsion system becomes challenging, given that no single technology is superior across all vessel types. Furthermore, even identical ships with different operating patterns may be better suited to different propulsion technologies. Addressing this problem, previous research has shown that if key elements of a vessel's operational pro file are known,

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唐紅興. "A Study on the Evolutionary Trend of Marine Diesel Engines." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/11813778430887419737.

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碩士<br>國立海洋大學<br>航運技術研究所<br>89<br>ABSTRACT Keyword：Marine Diesel Engines、 Evolutionary Trend Since the mess mechanical applications ignited in the Industrial Revolution starting in 1769, the mainstream engines of the marine vessels have evolved from reciprocating steam engines, steam turbine engines to today’s marine diesel engines. The marine diesel engine’s revolutionary functional changes e.g., constant pressure turbocharging, uniflow scavenging, variable injection timing device, etc., as well as the functional parameters of the engines, e.g., stroke-to-bore ration, eng

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LIN, CHENG-JIENG, and 林政建. "Characteristics Analysis of Electronic Control Devices for Marine Diesel Engines." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/zx2fd7.

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碩士<br>國立高雄科技大學<br>輪機工程系<br>107<br>The electronically-controlled fuel injection main engine comprises an electronic control system, a hydraulic control system, and the functions of traditional models, and it has highly intelligent functions and flexible control. The products designed by combining computer control with monitoring systems are user friendly and very modern. This electronically-controlled fuel injection main engine has the best performance for energy savings, low-speed stability, and running in low NOx mode. This paper compares the electronically-controlled fuel injection main engi

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Lin, Guan-You, and 林冠佑. "On reduction of waste gas of marine diesel engines by water jet method." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/17971593221866862489.

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碩士<br>國立成功大學<br>系統及船舶機電工程學系碩博士班<br>94<br>In the past, wet scrubber is used to scrub pulverulence in cement plant and cement plant. Because the environmental protection becomes important and extends widely, wet scrubber that canceling various exhaust pollution is taken serious and necessary. And this method is not used in diesel engine emissions reducing very often. For this reason, we will investigate how wet scrubber to improve in marine diesel engine emissions reducing in the dissertation. Using seawater which is easy to get as the major nebula for absorbing exhaust fume. 　　In this dissertat

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Wong, Wai-Fei, and 黃偉輝. "The study of numerical evaluation and on-board measurement of marine diesel engine’s emission." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/61853678160290380980.

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碩士<br>國立成功大學<br>造船及船舶機械工程學系碩博士班<br>91<br>September 1997,IMO adopted a protocol relating to MARPOL 73/78 for the new Annex VI-‘Regulation for the Prevention of Air Pollution from Ships’. According to the new Annex VI, all marine engine’s emission units are replaced by g/kw.h, and there are exacted limiting of the emission to each engine (by rpm). However, the discrepancies are found between the limiting value of emission (Annex VI) and reality circumstance, which caused by the condition of engine room. So make the regulation (Annex VI) be more complete and simplified the procedures of the exhau

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Sautermeister, F. A., Martin Priest, P. M. Lee, and M. F. Fox. "Impact of sulphuric acid on cylinder lubrication for large 2-stroke marine diesel engines: Contact angle, interfacial tension and chemical interaction." Thesis, 2013. http://hdl.handle.net/10454/9724.

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other<br>no<br>The effect of sulphuric acid on the chemical and physical behaviour of the piston ring lubricant in a marine engine cylinder was investigated. To reveal the basic influence of H2SO4 on the lubricant film, the saturated hydrocarbon Squalane (C30H62) was chosen as a simple model oil. The interfacial tension between aqueous H2SO4 (0-98% w/w) and C30H62 was measured between -3 and 165 degrees C to understand droplet formation in the lubricant. Interfacial tension decreases with increasing acid concentration and is temperature dependent.<br>The wettability of engine parts with corros

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