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Dissertations / Theses on the topic 'Dual fuel mode'

Author: Grafiati

Published: 6 September 2023

Last updated: 25 July 2025

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1

Singh, Sunmeet. "Utilization of methane in a compression ignition engine under dual fuel mode." Thesis, IIT Delhi, 2017. http://localhost:8080/xmlui/handle/12345678/7243.

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2

Lago, Sari Rafael. "Dual Mode Dual Fuel Combustion: Implementation on a Real Medium Duty Engine Platform." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/165366.

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[ES] Históricamente, el sector del transporte de servicio mediano y pesado ha sido desafiado por las regulaciones de emisiones que se han impuesto a lo largo de los años, lo que requirió intensificar el esfuerzo de investigación con el objetivo de avanzar en el desarrollo tecnológico para ofrecer una opción que cumpla con las normas a un precio similar para el propietario. No obstante, la reciente introducción de la normativa EUVI ha requerido la adición de un complejo sistema de postratamiento, agregando nuevos costes fijos al producto, así como costes operativos con el consumo de urea. Este

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3

FILHO, FERNANDO FERRARI. "EVALUATION OF DIESEL CYCLE ENGINE OPERATING IN THE DUAL FUEL MODE: DIESEL / ETHANOL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19636@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Este trabalho avaliou o comportamento de um motor do ciclo Diesel, operando no modo original (Diesel puro) e no modo bicombustível (Diesel / etanol), em dois modos de hidratação do álcool (70 e 93 graus INPM). A rotação foi mantida fixa em 1800 rpm. A finalidade foi estudar os parâmetros de desempenho do motor e analisar a liberação de calor pela combustão, como também, o calor trocado com as paredes. Avaliou-se como parâmetros de desempenho, o rendimento térmico, consumo específico de combustível e emissão de poluentes. A fase inicial do t

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4

Júnior, Roberto Freitas Britto. "Experimental analysis of a diesel engine operating in diesel-ethanol dual-fuel mode." Instituto Tecnológico de Aeronáutica, 2014. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=3043.

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A significant part of the world economy depends on stationary or vehicular Diesel engines. Such engines are fed mainly by fossil fuels, among these, the standard diesel. The growing interest in renewable energy sources makes the use of ethanol in these engines a real technological demand. From the existing concepts to meet this goal the Diesel-Ethanol in the Dual-Fuel mode has demand for published experimental data. Such concept brings a greater degree of freedom, but implications in technological challenges. It works through a PFI (Port Fuel Injection) system to prepare a pre-mixture of air a

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5

Riley, Logan Patrick. "Unstart Phenomenology of a Dual-Mode Scramjet Subject to Time-Varying Fuel Input." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1554740828968894.

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6

Boronat, Colomer Vicente. "Dual-Fuel Dual-Mode combustion strategy to achieve high thermal efficiency, low NOx and smoke emissions in compression ignition engines." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/113413.

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Elevada eficiencia térmica y mínimas emisiones contaminantes impuestas por las restrictivas normativas anticontaminación en motores alternativos representan el principal objetivos de los fabricantes de motores. La estrategia de combustión diésel convencional es ampliamente utilizada en el mundo gracias a su excelente economía en el consumo de carburante. Esta estrategia permite operar con mezclas pobres de combustible y aire proporcionando elevada eficiencia térmica. Además, este tipo de combustión puede ser aplicada desde motores tanto para vehículos ligeros como en motores marinos. Sin emba

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7

Chintala, Venkateswarlu. "Experimental investigation on utilization of hydrogen in a compression ignition engine under dual-fuel mode." Thesis, IIT Delhi, 2016. http://localhost:8080/xmlui/handle/12345678/7021.

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8

EGUSQUIZA, JULIO CESAR CUISANO. "EXPERIMENTAL INVESTIGATION OF A DIESEL CYCLE ENGINE OPERATING ON DUAL-FUEL MODE: DIESEL / ETHANOL AND DIESEL / GAS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17103@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>No presente trabalho, ensaios experimentais de um motor do ciclo Diesel consumindo etanol hidratado ou gás natural em substituição parcial ao óleo diesel, foram realizados. Os objetivos principais foram verificar as influências dos combustíveis alternativos e avaliar as técnicas do avanço da injeção do diesel e da restrição parcial do ar de admissão, em relação aos parâmetros característicos da combustão, desempenho e emissões. Com base nos dados do diagrama pressão-ângulo de virabrequim, foi possível analisar alguns parâmetros característi

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9

Aklouche, Fatma Zohra. "Etude caractéristique et développement de la combustion des moteurs Diesel en mode Dual-Fuel : optimisation de l'injection du combustible pilote." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2018. http://www.theses.fr/2018IMTA0072/document.

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La dégradation de l’environnement ainsi que l’épuisement progressif des énergies fossiles devient très inquiétant et incite les états à définir des limites d’émission polluantes plus strictes. Ceci a conduit les constructeurs automobiles à poursuivre leurs recherches dans le développement de conception propre et efficace des moteurs en utilisant des combustibles alternatifs dans les moteurs à combustion interne.Dans le présent travail, on s’intéresse à l’étude des moteurs fonctionnant en mode DF afin d’améliorer ses performances tout en minimisant les émissions polluantes, en particulier les H

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10

Sehili, Youcef. "Contribution à la modélisation pour l'optimisation des performances et des émissions polluantes d'un moteur diesel fonctionnant en mode dual fuel." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0419.

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Les moteurs à combustion interne jouent un rôle crucial dans notre société moderne, alimentant une variété d'applications allant des transports aux générateurs d'énergie. Face aux défis croissants en matière d'efficacité, d'émissions et de durabilité, une compréhension approfondie et une modélisation précise de la combustion sont essentielles. Cette thèse se consacre à la modélisation de la combustion dans les moteurs à combustion interne en se concentrant sur le mode dual fuel. L'objectif est de contribuer de manière significative à la compréhension, à la modélisation et à l'optimisation de l

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11

ACCURSO, FRANCESCO. "Development of a Phenomenological Combustion Model for Large Bore Dual Fuel Engines." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2972101.

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12

Johnson, Stephen. "A quasi-dimensional model for performance and emissions predictions in a dual fuel engine." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/10975.

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A new quasi-dimensional, multi-zone model has been developed to describe the combustion processes occurring inside a dual fuel engine. A dual fuel engine is a compression ignition engine in which a homogeneous lean premixed charge of gaseous fuel and air is ignited by a pilot fuel spray. The atomisation and preparation of the pilot leads to the formation of multiple ignition centres from which turbulent flame fronts develop. The energy release in a dual fuel engine is therefore a combination of that from the combustion of the pilot fuel spray and lean premixed charge. Hence, the dual fuel comb

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13

Li, Yu. "A Numerical Investigation of Natural Gas-Diesel Dual Fuel Engine Combustion and Emissions Using CFD Model." Thesis, West Virginia University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10845305.

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<p> Natural gas (NG)-diesel dual fuel engines have been highlighted for their fuel flexibility and high thermal efficiency comparable to diesel engines. However, the addition of NG to compression ignition diesel engines was reported to elongate ignition delay and to increase the emissions of carbon monoxide (CO), unburned methane (CH<sub>4</sub>), and nitrogen dioxide (NO<sub>2</sub>). Past research on dual fuel engines has focused on the experimental research on the engine performance, combustion process, and exhaust emissions. The research on detailed mechanism dominating the impact of CH<su

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14

Adams, Mitchell Robert. "Dual-Axis Acousto-Optic/Electro-Optic Deflectors in Lithium Niobate for Full-Parallax Holographic Video Displays." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/9159.

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A major limitation of acousto-optic (AO) leaky-mode modulator based holographic displays is their inability to present full-parallax. We propose that full-parallax capabilities can be bestowed on these displays by integrating an electro-optic (EO) phased array into the architecture. We validated this concept by rendering computational models and by fabricating and testing a basic two-axis AO/EO deflector prototype in lithium niobate. This was, to our knowledge, the first instantiation of an integrated, hybrid AO/EO deflector. The prototype had a 6° deflection range along the AO-axis, and a 3°

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15

Mahmoody, Sam. "Micromechancal modeling of dual-phase steel using a rate-dependent crystal plasticity model." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99778.

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Dual-phase (DP) steels consisting of a ferrite matrix with dispersed martensite particles have attracted a significant interest due to their combination of high work hardening and ductility. A great deal of experimental work has been done to obtain a better comprehension of the relation of their mechanical behaviour to their microstructural characteristics. In the present work, a micromechanical study of ferrite-martensite DP steels is conducted. The deformation of ferrite is described by a rate-dependent crystal plasticity theory, which relates the stress-strain field equations on the grain l

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16

Dougherty, Timothy. "An investigation of the dual mechanism model of past tense formation : does the model apply to non-native speakers?" Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32906.

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The purpose of this research is to further investigate the ongoing debate between the Dual Mechanism Model and the Connectionist Model of language processing by investigating how knowledge of second language (L2) inflectional morphology is represented and processed by learners of English. Specifically, do second language learners of English use the same Dual Mechanism Model that Prasada and Pinker (1993) have argued is a universally applicable model, or does the Connectionist Model of language processing better explain L2 learning and language processing?<br>The participants in this study were

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17

El, Akkraoui Amal. "The primal and dual forms of variational data assimilation in the presence of model error." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:8881/R/?func=dbin-jump-full&object_id=92317.

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18

Milana, Guteša. "Modelovanje procesa u gasnim turbinama za potrebe primene gasa iz gasifikacije biomase." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104879&source=NDLTD&language=en.

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U okviru istraživačkog rada formiran je matematički model za simulacijuprocesa transformacije energije u postrojenju gasne turbine prisagorevanju gasova srednje ili niže toplotne moći. Data je analiza procesakosagorevanja gasa iz gasifikacije kukuruznog oklaska i prirodnog gasa upostrojenju gasne turbine, za tri različite konfiguracije postrojenja.Analiza je rađena na primeru osnovnog Joule-ovog ciklusa sa vazduhomhlađenim lopaticama.<br>This paper presents mathematical model for simulation of energytransformation process in gas turbine facility with combustion of mediumand low calorific gases

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19

Murphy, Victoria A. "Inflectional morphology and second language learning systems : an investigation of the dual-mechanism model and L2 morphology." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36782.

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Pinker and Prince (1988, 1994) propose that there are two separate systems involved in linguistic representation and processing; one system is rule-governed, and incorporates symbolic hierarchical linguistic representations, the other is associative with linguistic information represented in a more distributed fashion. One particular linguistic feature of English said to exemplify the principles of this dual-mechanism model is inflectional morphology. Pinker and Prince (1988; 1994) present a range of evidence showing that native speakers of English process regular inflectional items in ways th

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20

Lirio, Pamela. "Beyond the expatriate model: an exploration of global work and reconciliation of work and family demands among global generation X managers in dual-career families." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96786.

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In this dissertation I explored how women and men global managers from the generation aged 30 to 45 in the United States and Canada called "Generation X", navigated global work and family demands while pursuing a global career. I conducted in-depth interviews with 25 Generation X global managers in dual-career families ("Global Gen Xers") to examine the scope and nature of global work and the importance of international travel and technology in pursuing alternative forms of global careers. I also investigated how working globally interweaves with family routines and how participants assessed t

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21

Huttenhower, Hillary Anne. "Development of new chemistry for a dual use hydrazine thruster, switchable room temperature ionic liquids, a study of silane grafting to polyethylene and its model compounds, synthesis of the novel hydrazine replacement fuel molecules 1,1-dimethyl-2-[2-azidoethyl]hydrazine and 1,1-dimethyl-2-[2-azidoethyl]hydrazone." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/41055.

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This thesis focuses on the development of new compounds or new processes that are more environmentally friendly and economical than those currently in use. The decomposition of hydrazine, a well established liquid rocket fuel for both the aerospace and defense industries, to the product ammonia is studied. Control of this reaction will allow hydrazine to be used as a propellant for both chemical and electric propulsion. From this a dual stage thruster will be developed that will be more efficient than current systems decreasing the amount of propellant needed and allowing for either a large

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22

Fagundez, Jean Lucca Souza. "Avaliação energética do uso de álcoois combustíveis em motores de combustão interna." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/10624.

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The present work studies the use of a two-zone computer model to simulate the operation of an internal combustion engine with spark ignition fueled with alcohol fuels and gasohol. To fit the model to the experimental data, a parameter estimation technique was used and the heat transfer correlation that could better fit the tested fuels and engine was determined. The tested fuels were: hydrous ethanol, wet ethanol (from 10% to 40% of water, by volume), n-butanol, n-butanol/ethanol blend and gasohol. In addition to the experimental tests with the engine, tests with a packed distillation column u

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23

De, Robbio Roberta. "CFD study of diesel engine operating in dual fuel mode." Tesi di dottorato, 2020. http://www.fedoa.unina.it/13170/1/PhD_Tesi_Roberta_DeRobbio.pdf.

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In the last years climate change has become an emergency that united countries of the world to make agreements to reduce pollutant emissions. In this context, the diesel engine, whose combustion is characterised by high emissions of particulate matter and nitric oxides, is likely to disappear from the future automotive market. However, the high performances of this well established engine may still represent a resource in terms of power, efficiency and reliability. In this regard, a possible solution is to readapt the engine to operate in Dual Fuel mode. In order to assess the benefits and lim

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24

VERMA, GAURAV. "UTILIZATION OF BIOGAS WITH DIFFERENT PILOT FUELS IN DUAL FUEL MODE IN DIESSEL ENGINE." Thesis, 2022. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19346.

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Industrial dependence on energy and international conflicts has triggered the fuel prices to new highs. As a result, new alternative fuels must be explored that have no or very less harmful emissions without the compromise of the efficiency. One such fuel that can be converted for use in internal combustion engines is biogas. In this experimental study, a Direct Injection Compression Ignition (DICI) engine is converted into a dual-fuel engine that runs on biogas as primary fuel and various fuel blends as the pilot fuel. It will achieve the goal of lower exhaust emissions although the

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25

Shrivastava, Vinay. "Design and development of downdraft gasifier for operating CI engine on dual fuel mode." Thesis, 2012. http://ethesis.nitrkl.ac.in/3980/1/Design_and_development_of_downdraft_gasifier_for_operating_CI_engine_on_dual_fuel_mode.pdf.

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Gasification is a thermo-chemical process which converts solid biomass into a mixture of combustible gases that can be used in various applications. In this project, a downdraft gasifier was designed and developed for running a single cylinder, 4-stroke, air cooled, direct injection diesel engine developing a power of 4.4 kW, at a rated speed of 1500 rpm on dual fuel mode. Wood chips and mustard oil cake in the ratio of 7:3 was used as a feed stock in the gasifier. An experimental study was also carried out on diesel fuel (DF) and producer gas (PG) on dual fuel mode. The producer gas was intro

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26

Nayak, Rakesh Rajan. "Experimental Study of Biogas Production & its Utilization in CI Engine in Dual Fuel Mode." Thesis, 2018. http://ethesis.nitrkl.ac.in/9944/1/2018_MT_216ME3388__RRNayak__Experimental.pdf.

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In this research work, biogas was produced by the anaerobic co-digestion of cow dung with yard waste. First a laboratory scale experiment was conducted to find the best blend ratio of cow dung and yard waste which maximize the biogas production. Mechanical pre-treatment of feedstock was done to increase the specific surface area and increase the amount of biogas production. It was found that, with 75% cow-dung and 25% yard-waste (by volume) the biogas production was maximum. Further, using that optimum ratio large scale biogas production was done. The biogas was used as primary fuel and diesel

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27

Swar, Avinash. "Experimental Study of a Diesel Engine Using Pretreated Biogas on Dual Fuel Mode at Different Injection Timings." Thesis, 2018. http://ethesis.nitrkl.ac.in/9941/1/2018_MT_216ME3392__ASwar__Experimental.pdf.

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Pretreatment improves the quantity of biogas produced. In this investigation, initially biogas was obtained from the co-digestion of cow dung (CD) and yard waste (YW) which were prepared at different proportions (i.e. 25:75, 50:50, 75:25 and 100% CD). The samples of feedstock were kept in different laboratory digestors. Sodium hydroxide (NaOH) at 6% by weight was added to all the samples for pretreatment. The obtained biogas from all the digestors were checked for their yield. The ratio with 75:25 CD and YW was found to be better in both yield and quality. Further, an experimental study was co

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28

Barik, Debabrata. "Experimental studies on Biogas Production and Its Utilization in a Direct Injection Diesel Engine Run on Dual Fuel Mode." Thesis, 2016. http://ethesis.nitrkl.ac.in/8205/1/511ME120_(Debabrata_Barik).pdf.

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Biodiesel is considered as one of the potential liquid alternative fuels in many countries in the world. It is produced from edible and non-edible oils, animal fat, and algae by the transesterification process. In India, Karanja (Pongamia pinnata) a non-edible oil seed is considered as a potential feedstock for biodiesel production. The de-oiled cakes of Karanja seed obtained from expeller units are of no use, and are disposed in the open. The disposal of such non edible oil cake in the open and land fill generates various anthropogenic gases, and may increase the global warming potential (GWP

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29

Lin, Zong-Sheng, and 林宗陞. "Channel Partition with Repacking for GSM Using Half / Full Rates and Dual mode Mobile Stations." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/43364734023929048351.

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碩士<br>國立嘉義大學<br>資訊工程研究所<br>91<br>We propose Channel Partition with Repacking Scheme (CPR) for the users with full-rate calls, half-rate calls, and dual-mode mobile stations in GSM system. The scheme partitions the time slots of GSM radio frame into two parts, one is full-slot partition that provides full-time slots for the full-rate calls, another is half-slot partition that provides half-time slots for the half-rate calls. If the time slots of the full-slot partition are not available, the system allocates the full-time slots of the half-slot partition to the full-rate calls request. If the t

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30

Vaughn, James Roy. "A fundamental approximation in MATLAB of the efficiency of an automotive differential in transmitting rotational kinetic energy." Thesis, 2012. http://hdl.handle.net/2152/ETD-UT-2012-05-4980.

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The VCOST budgeting tool uses a drive cycle simulator to improve fuel economy predictions for vehicle fleets. This drive cycle simulator needs to predict the efficiency of various components of the vehicle's powertrain including any differentials. Existing differential efficiency models either lack accuracy over the operating conditions considered or require too great an investment. A fundamental model for differential efficiency is a cost-effective solution for predicting the odd behaviors unique to a differential. The differential efficiency model itself combines the torque balance equat

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