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Dissertations / Theses on the topic 'CFR Engine'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Hsiao, Ting-Pang. "Flame propagation model for the CFR engine under knocking and non-knocking conditions." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/10983.

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Includes bibliographical references.<br>Engine knock is one of the factors that limit the design of spark-ignition (SI) engines. It is caused by the auto-ignition of the end-gas during combustion and can lead to severe engine damage and failure. Octane number indicates the ability of a fuel to resist auto-ignition in a SI engine and forms part of the gasoline fuel specification. Burn duration of normal combustion is an important parameter during fuel octane measurement and is often equated to the turbulent flame speed of the fuel. The objective of this project is to develop a combustion model

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2

Perumal, Marlan. "A multi-zone model of the CFR engine : investigating cascading autoignition and octane rating." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/11357.

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Includes abstract.<br>Includes bibliographical references (p. 103-109).<br>The CFR engine is the standardised research engine used for the measurement of knock resistance of fuels through the Research Octane Number (RON) and Motor Octane Number(MON) tests. In standard production engines, knock manifests as an almost instantaneous pressure rise followed by knock ringing" pressure oscillations of similar magnitude. However, knock in the CFR engine is characterised, and measured by, a steep, but more gradual pressure rise, followed by ringing of much lesser magnitude. It has been previously propo

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Thiart, Anja. "A CFD study of fuel evaporation and related thermofluid dynamics in the inlet manifold, port and cylinder of the CFR octane engine." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/11992.

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Includes abstract.<br>Includes bibliographical references.<br>Spark Ignition (SI) engine fuels' anti-knock properties are measured in the Co-operative Fuel Research (CFR) engine under two different test conditions as prescribed by the American Society for Testing and Materials (ASTM) for Research Octane Number (RON) and Motor Octane Number (MON) ratings. Recent research has been focused on determining whether the numerical difference between RON and MON, known as Octane Sensitivity (OS), is a result of the chemical or physical properties of the fuel. The present research examined the effect th

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4

JUNQUEIRA, PATRICIO. "ANALYSIS OF EMISSIONS AND THE PERFORMANCE OF A SINGLE CYLINDER ENGINE CFR TYPE USING HYDRATED ETHANOL AS FUEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1988. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33269@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A perspectiva a curto prazo de uma legislação nacional limitando o nível máximo de emissões de poluentes em motores de combustão interna tem despertado interesse em pesquisas visando o controle das emissões sem prejuízo ao desempenho do motor. No presente trabalho foram pesquisadas as influências de parâmetros tais como avanço da ignição razão ar-combustível, preparação da mistura e taxa de compressão no desempenho e nas emissões em um motor tipo CFR utilizando etanol hidratado. Foi utilizado um condensador na linha de amostrage

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5

Horoufi, Aryan. "Car engine breather icing." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/10201.

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Icing in an engine breather system can block the engine breather pipe, cause excessive crankcase pressure and degrade the engine performance. In this project, a numerical study, experimental tests and CFD analysis are employed in order to understand condensation and the extent of freezing inside a vertical pipe, a horizontal pipe and a T-joint pipe which are exposed to an external convective cooling. The pipe internal flow is assumed to be a vapour/air mixture. This study has led an evaluation of freezing in an engine breather pipe. The finding in this project highlighted the effects of the pi

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6

Graysmith, J. L. "Using CFD in engine design." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/4252/.

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In this thesis the author presents two areas of work; exploring the integration of Computational Fluid Dynamics (CFD) into engine design for Jaguar Cars Ltd and developing a novel 'mesh construction' method for making mesh generation both easy and fast. It is concluded that Jaguar can use CFD in the evaluation stage of the engine design process, although not in the concept stage of design. The CFD predictions are shown to be useful for detecting flow related faults and determining the general flow trends, but they should not be used as an absolute measure of the flow variables. The author has

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7

Wang, Feng. "Whole aero-engine meshing and CFD simulation." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/27235.

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Aero-engine components are strongly coupled with each other and traditional design tools are not always able to predict the complex phenomenon caused by component interactions. Whole engine simulations could allow designers to capture this phenomenon, increase the design confidence and reduce design cycles. The aim of this thesis is to reduce the turnover time in the pre-processing of whole engine simulations and conduct CFD simulations of the whole engine gas path. This thesis has developed a set of meshing methods for turbomachinery applications. These methods include multi-block structured

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8

Renberg, Ulrica. "1D engine simulation of a turbocharged SI engine with CFD computation on components." Licentiate thesis, KTH, Machine Design (Div.), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9162.

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<p>1D engine simulations of turbocharged engines are difficult to </p><p>Techniques that can increase the SI- engine efficiency while keeping the emissions very low is to reduce the engine displacement volume combined with a charging system. Advanced systems are needed for an effective boosting of the engine and today 1D engine simulation tools are often used for their optimization.</p><p>This thesis concerns 1D engine simulation of a turbocharged SI engine and the introduction of CFD computations on components a

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9

Kleemann, Andreas Peter. "CFD simulation of advanced diesel engines." Thesis, Imperial College London, 2001. http://hdl.handle.net/10044/1/62159.

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This study uses CFD methodology to simulate an advanced Diesel engine operated at higher than conventional peak cylinder pressures. The existing mathematical models for Diesel combustion, pollutant formation and wall heat transfer are improved and validated for this operating range. The fluid flow is described via the gas-phase Favre-averaged transport equations, governing the conservation of mass, chemical species, momentum and energy, based on the Eulerian continuum framework. These equations are closed by means of the k — e turbulence model. The liquid phase uses the Lagrangian approach, in

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10

Grimaldi, Guillaume. "CFD Validation of the Engine Air Intake wind tests." Thesis, KTH, Aerodynamik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180041.

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The main objective of this study carried on within the Aerodynamics department of Airbus Helicopters Marignane was to validate the Engine Air Intake tests with a CFD model of the helicopter including the whole wind tunnel building. The quantities which have been validated were aerodynamic criteria presented in the below parts. This study was done in order to improve the method and tools of the Airbus Helicopters Aerodynamic Department. The modeling has been improved during this study in order to make the computations results closer to the wind tunnel tests results.

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11

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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12

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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13

Ierardi, James A. "A computer model of fire spread from engine to passenger compartments in post-collision vehicles." Link to electronic version, 1999. http://www.wpi.edu/Pubs/ETD/Available/etd-052499-135914/unrestricted/thesis.pdf.

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14

Af, Malmborg Harald. "Evaluation of Car Engine Sound Design Methods in Video Games." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik, konst och samhälle, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84627.

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Realistic interactions with sound objects in video games are a contributing factor to the overall immersion. Car engine sound design is an area where the auditory feedback from driving would have an impact on that immersion. For this study, three methods for designing car engine sounds are evaluated. A traditional method in the game sound industry is to use several sampled audio recordings for the reproduction of engine sounds, which is in this study represented as a sample-based model. The sample-based model is evaluated together with a model using granular synthesis in an in-game scenario. A

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15

Hoenderboom, Stan. "Evaluation of car engine heating systems in the Jämtland-Härjedalen region, northern Sweden." Thesis, Mittuniversitetet, Avdelningen för ekoteknik och hållbart byggande, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-29089.

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Objective of this thesis is to identify potential energy savings regarding engine heating of cars within the Jämtland-Härjedalen county, northern Sweden. This could contribute to energy consumption reduction goals of Sweden. Potential energy savings are defined by comparing the current energy consumption with the energy consumption of different energy saving scenarios in terms of behavioural change and technological choices. Energy consumption, both current and potential is modeled in excel based on data derived from quantitative investigation and literature review. Engine heating is identifie

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16

Karimifar, M. "Knock and knock intensity in a spark ignition engine." Thesis, University of Bradford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233679.

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17

Yossefi, Danny. "Early stages of combustion development in internal combustion engines using linked CFD and chemical kinetics computations : illustrated by studies of a natural gas burning engine." Thesis, University of Exeter, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296284.

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18

Söder, Martin. "Creation and destruction of in-cylinder flows : Large eddy simulations of the intake and the compression strokes." Doctoral thesis, KTH, Strömningsfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-164889.

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The aim of this thesis is to increase engine efficiency by studying the flow structures created in an engine cylinder during the intake phase and the effect of the subsequent compression. The invention of the combustion engine has enabled three centuries of economic growth fueled by energy stored as hydrocarbons. However, during the latter part of the twentieth century negative consequences on health and environment of the combustion engine were observed. In order to reduce emissions without increasing fuel consumption, improved knowledge of all physical processes occurring in the engine are n

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19

Noor, Mohamed Sulfickerali. "Efficient CFD based aero-thermo-mechanical modelling for aircraft engine design." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/813497/.

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In this thesis, improved and faster CFD based aero-thermo-mechanical methods that can be used to optimize engine configurations early in the design process are described. Axisymmetric models of 3D non-axisymmetric features such as protrusions, holes and honeycomb liners are developed for use in this context, and 3D unsteady CFD is used to investigate the flow physics. Initially, the research focussed on modelling of a rotor-stator disc cavity. Steady CFD validations for a plane disc and for a disc with protrusion were carried out and a simplified body force model was developed for including th

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20

Bradley, Andreas. "CFD Simulations for Film Cooling : Reduced Models at Engine Like Conditions." Licentiate thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-91716.

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In gas turbines some parts are exposed to combustion gases with temperatures well above the melting temperature of the material. Therefore, various cooling techniques are utilized in order to protect the parts exposed to these hot gases. One such technique, film cooling, is a common and well established way to protect the exposed parts. Film cooling involves the ejection of cold air on the surface of the parts that are to be protected, thus creating a film of colder air between the surface and the hot gases. Computational Fluid Dynamics (CFD) is a way of calculating fluid flow, and can be used

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21

Potts, Ian. "Particle Redistribution in Serpentine Engine Inlets." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595542100917769.

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22

Beavis, Nicholas J. "Numerical studies of gasoline direct injection engine processes." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/25230.

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The GDI engine has a number of practical advantages over the more traditional port-fuel injection strategy, however a number of challenges remain the subject of continued research in an attempt to fully exploit the advantages of the GDI engine. These include complex in-cylinder flow fields and fuel-air mixing strategies, and significant temporal variation, both through an engine cycle and on a cycle-by-cycle basis. Despite advances in experimental techniques, the relative difficulty and cost of taking detailed measurements remains high, thus computational techniques are an integral part of res

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23

Vezzosi, Riccardo. "State of the art and critical review of pre-chamber ignition systems for passenger car spark ignition engines." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22702/.

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Pre-chamber ignition systems are currently one of the most attractive developments for SI engines. The objective of this thesis is to present the technology at it's current state, focusing on passenger vehicles application, to analyse what issues need to be addressed for it to widely come to the market and what the potential of this techology is for the SI engine future. Replacing the spark plug with a new system capable of igniting a much leaner mixture, to reduce the likelyhood of knock, was the initial goal of the pre-chamber ignition system. What the system achieves is also a much faster

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24

Gomez-Parada, Josue. "Parametric analysis of the drag produced by a VHBR engine using CFD." Thesis, Cranfield University, 2009. http://dspace.lib.cranfield.ac.uk/handle/1826/6839.

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The future of the civil aeronautics industry will be determined by the decreasing oil supplies around the world and by more environmentally friendly aircraft designs. Future Gas Turbine engines are being designed focusing on the fuel economy reducing emissions and noise. This project is on the application of Computational Fluid Dynamics (CFD) techniques to the computation and parametric analysis of drag produced by the nacelle of Very High By-pass Ratio (VHBR) engines as integrated into the airframe. Engines based on VHBR concept are consistent with the objectives of VITAL which is an EU proje

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Shrestha, Amit. "JP-8 surrogates for diesel engine application| Development, validation, and CFD simulation." Thesis, Wayne State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3641430.

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<p> Recently, diesel engine cycle simulation has been acknowledged as an effective way for the development and performance optimization of compression ignition engines operating on a variety of fuels. The goal of this research was, therefore, to develop a JP-8 surrogate with a limited number of fuel components so that its chemical mechanism could be developed for its use with computational fluid dynamics (CFD) codes for enabling time-efficient diesel engine cycle simulation. In order to achieve this goal, a new approach was developed for the formulation of surrogate for compression ignition en

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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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Johansson, Adam, and Jonas Gunnarsson. "Predicting Flow Dynamics of an Entire Engine Cooling System Using 3D CFD." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-62763.

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A combustion engine generates a lot of heat which need to be cooled to prevent damages to the engine and the surrounding parts. If the cooling system can not provide enough cooling to keep the engine in a well defined range of temperatures performance and durability will decrease and emissions increase. It is also important that the cooling system do not over-cool the engine, since this may result in rough running, increased engine friction and an overall negative performance. The aim of this thesis work is to create a complete 3D digital model of the cooling system for the first generation VE

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28

Bennett, Guy Malcolm. "CFD modelling of ignition and combustion in diesel engines." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408413.

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29

Yu, Larry Liaobo. "A CFD study on direct injection two-stroke engines." Thesis, Glasgow Caledonian University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287858.

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This thesis presents the research on direct-fuel-injection (DFI) performance analyses of the two-stroke engine using computational fluid dynamics (CFD). The aims of this research are: (1) to generate a finite volume mesh that can be used to simulate the moving of the piston and opening and closing the ports of the cylinder, (2) to achieve an numerical flow pattern of the scavenging process and (3) to study the DFI process using the mesh and the flow pattern obtained from the first two parts. The three parts in the analyses, therefore, are the engine geometry modelling, scavenging process model

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30

Alexakis, Thanos. "CFD modelling of Stirling engines with complex design topologies." Thesis, Northumbria University, 2013. http://nrl.northumbria.ac.uk/26308/.

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This research is in the field of CFD modelling of heat engines, particularly the advanced CFD methodologies for the performance characterization of solar Stirling Engines with complex geometrical topologies. The research aims to investigate whether these methods can provide a more inclusive picture of the engine performance and how this information can be used for the design improvement of Stirling engines and the investigation of more complex engine topologies.

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31

Borghesi, Giulio. "Autoignition in turbulent two-phase flows." Thesis, University of Cambridge, 2013. https://www.repository.cam.ac.uk/handle/1810/244235.

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This dissertation deals with the numerical investigation of the physics of sprays autoigniting at diesel engine conditions using Direct Numerical Simulations (DNS), and with the modelling of droplet related effects within the Conditional Moment Closure (CMC) method for turbulent non-premixed combustion. The dissertation can be split in four different sections, with the content of each being summarized below. The first part of the dissertation introduces the equations that govern the temporal and spatial evolution of a turbulent reacting flow, and provides an extensive review of the CMC method

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32

Blake, Adam Michael. "Computational Investigation of Ethanol and Bifuel Feasibility in Solstice Engine." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1357600049.

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33

Woollen, Peter. "Gas in engine cooling systems : occurrence, effects and mitigation." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/11740.

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The presence of gas in engine liquid cooling systems can have severe consequences for engine efficiency and life. The presence of stagnant, trapped gases will result in cooling system hotspots, causing gallery wall degradation through thermal stresses, fatigue and eventual cracking. The presence of entrained, transient gases in the coolant flow will act to reduce its bulk thermal properties and the performance of the system s coolant pump; critically the liquid flow rate, which will severely affect heat transfer throughout the engine and its ancillaries. The hold-up of gas in the pump s impell

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Gilmore, Jordan David. "Computational Fluid Dynamics Analysis of Jet Engine Test Facilities." Thesis, University of Canterbury. Mechanical Engineering, 2012. http://hdl.handle.net/10092/7238.

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This thesis investigates the application of CFD techniques to the aerodynamic analysis of a U-shaped JETC. Investigations were carried out to determine the flow patterns present at a number of locations within the structure of a full U-shaped JETC. The CFD solutions produced in these investigations used recommendations from the literature in the set-up of the CFD solver, and provided the computational component towards problem-specific validation of the CFD techniques used. A structured series of CFD-aided investigation and design processes were then performed. These processes were based aro

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35

Seemann, Patrick. "Design of 120cc Single Cylinder Experimental Engine for Analysis of Intake Swirl and Multiple Ignition Sites." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_theses/219.

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The intent of this thesis is to design, build, and test a cylinder head with variable swirl and ignition sites. The design aspect used Solid Works Floworks to model airflow within the head and cylinder. Swirl rate and volumetric flow rate were calculated from the results. Many design iterations took place before a suitable design was accomplished. Once the suitable design was reached, it was built using the rapid prototyping method known as 3-D printing (Fused Deposition Modeling). Valve guides and seats were installed in the head. Then valves, springs, and retainers were installed to allow f

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Deacon, Michael. "Optimising the control of a passenger car diesel engine and continuously variable transmission." Thesis, University of Bath, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362258.

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Stitzel, Sarah M. "Flow Field Computations of Combustor-Turbine Interactions in a Gas Turbine Engine." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/30992.

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The current demands for higher performance in gas turbine engines can be reached by raising combustion temperatures to increase thermal efficiency. Hot combustion temperatures create a harsh environment which leads to the consideration of the durability of the combustor and turbine sections. Improvements in durability can be achieved through understanding the interactions between the combustor and turbine. The flow field at a combustor exit shows non-uniformities in pressure, temperature, and velocity in the pitch and radial directions. This inlet profile to the turbine can have a considerable

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38

Giuliani, James Edward. "Jet Engine Fan Response to Inlet Distortions Generated by Ingesting Boundary Layer Flow." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468564279.

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Duyar, Serkan. "Modeling diesel combustion in heavy duty engine using detailed chemistry approach and CFD." Thesis, KTH, Kraft- och värmeteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-149478.

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Emission and fuel consumption are among the key parameters when designing a combustion system. Combustion CFD can assist in this task only if good enough accuracy is achieved regarding combustion and emission predictions. The aim of this master thesis is to evaluate the use of detailed reaction mechanisms (as a substitute for standard combustion model) in terms of computational time and result accuracy. Several mechanisms for n-heptane are tested. Lund University optical engine experimental case is used for this evaluation.Results showed that detailed chemistry can predict ignition accurately

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Strålin, Per. "CFD modeling of mixture formation in direct injected HCCI engines /." Stockholm, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-358.

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Palipana, Aruna Susantha. "CFD modelling of natural gas combustion in spark ignited engines." Thesis, Loughborough University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327653.

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42

Killingsworth, Nicholas J. "HCCI engine control and optimization." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3259636.

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Thesis (Ph. D.)--University of California, San Diego, 2007.<br>Title from first page of PDF file (viewed June 11, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 111-118).

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Sheldrake, Terence Henry. "Heat transfer measurements in and around the valves and ports of an internal combustion engine." Thesis, University of Sunderland, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389874.

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44

Erling, Fredrik. "Static CFD analysis of a novel valve design for internal combustion engines." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15521.

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In this work CFD was used to simulate the flow through a novel valve design for internal combustion engines. CFD is numerical method for simulating the behaviour of systems involving flow processes. A FEM was used for solving the equations. Literature on the topic was studied to gain an understanding of the performance limiters on the Internal combustion engine. This understanding was used to set up models that better would mimic physical phenomena compared to previous studies. The models gave plausible results as to fluid velocities and in-cylinder flow patterns. Comsol Multiphysics 4.1 was

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Bai, Mo, and Mahabaleshwar Sagar Parampalli. "Accelerated Engine Suspension Load Prediction and Exhaust System Displacement Simulation." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-218029.

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In today’s competitive automotive industry, most companies are trying to make their new designs and features implemented in their products to be ahead of their competitors. However, in the preliminary design stage of CEVT vehicles, dynamic simulation consumes excessive amount of time depending on the complexity of the dynamic model and simulation settings. It is beneficial and possible to shorten the simulation time. This thesis focuses on reducing the dynamic simulation time in ADAMS/Car in engine suspensions’ early development stage. Five simulation time reducing methods, i.e., reducing end

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Blessing, Bryan Holly. "A Computational Study of Engine Deflection Using a Circulation Control Wing." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/515.

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In the past, research into Short Takeoff and Landing aircraft has led to the investigation of the coupling of a Circulation Control Wing and Upper Surface Blowing engine. The Circulation Control Wing entrains the flow of the engine to be deflected downward such that a component of the thrust is now in the vertical direction. The unfortunate consequence of the Upper Surface Blowing engine is the poor cruise performance due to scrub drag. Cal Poly's research into a Cruise Efficient Short Takeoff and Landing Aircraft offers a solution by pylon mounting over the wing engines. Analysis shows that t

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Hjälm, Wallborg Martin, and Joakim Palmgren. "Improving engine oil coolerperformance : For future vehicle applications." Thesis, Uppsala universitet, Mikrosystemteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-256510.

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This thesis describes the process of improving the engine oil cooler performance for future vehicle applications, from ideas to simulated concepts. Increasing market expectations of high engine power, low fuel consumption and high towing capabilities results in an ever rising pressure on the cooling system in modern cars. The desire to prevent a future situation where the engine oil could become too hot, formed the basis for this thesis. The thesis was performed during 10 weeks from March to June 2015, at Volvo Car Corporation in Gothenburg. The working process started with literary studies wh

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Lupi, Alessandro. "CFD analysis and redesign of centrifugal impeller flows for rocket pumps." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06302009-040325/.

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Tawfig, Mohammed Elmustafa. "An investigation of air motion and heat transfer in a motored indirect injection diesel engine." Thesis, University of Bath, 1991. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280348.

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Hernández, López Alberto. "Optimization and analysis by CFD of mixing-controlled combustion concepts in compression ignition engines." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/103826.

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El trabajo presentado en esta Tesis está motivado por la necesidad de los motores de combustión interna alternativos de reducir el consumo de combustible y las emisiones de CO2 mientras se satisfacen las cada vez más restrictivas regulaciones de emisiones contaminantes. Por lo tanto, el objetivo principal de este estudio es optimizar un sistema de combustión de encendido por compresión controlado por mezcla para probar su potencial como motores de futura generación. Con esta meta se ha desarrollado un sistema automático que combina CFD con métodos de optimización avanzados para analizar

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