Relevant bibliographies by topics / Main engine

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Main engine'

Author: Grafiati
Published: 5 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Main engine"

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Ramadhani, Dimitry Rizal, and Erifive Pranatal. "Analysis of Design Changes from Main Engine Diesel Engine to Electric Engine on Fishing Vessels." Journal of Applied Sciences, Management and Engineering Technology 5, no. 1 (2024): 7–17. http://dx.doi.org/10.31284/j.jasmet.2024.v5i1.5965.

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Fishing vessels in Indonesia conventionally use diesel engines as their main propulsion engine. However, the use of diesel engines has quite a bad impact on the surrounding environment. So the latest innovations using alternative energy are needed. One of them is the use of electric engines as a replacement for diesel engines in the ship's main propulsion engine. The use of this electric machine will have a friendly impact on the environment. Apart from that, you don't need to spend a lot of money to maintain this electric machine. We can see this by comparing the ship's thrust requirements with maximum speed.
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Nikolić, N., N. Crnogorac, J. Dorić, D. Feher, and S. Galamboš. "A comparison of main bearings load of two-cylinder “V” and boxer motorcycle engines." IOP Conference Series: Materials Science and Engineering 1271, no. 1 (2022): 012006. http://dx.doi.org/10.1088/1757-899x/1271/1/012006.

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Abstract The paper deals with determining the load of the crankshaft main bearings in two-cylinder motorcycle engines. Two cylinder arrangements, used in two-cylinder motorcycle engines, are considered - the boxer-engine and V-engine. The aim of the research is to determine the influence of cylinder arrangement on the magnitude and circumferential distribution of the bearing load of the engines considered. For this purpose, models of a two-cylinder boxer engine and a corresponding V-engine crankshaft drives were developed using multibody dynamics simulation software. Previously, by using a one-dimensional gas analysis software the engine cycles were simulated in order to determine the cylinder pressure required to simulate piston dynamics. As a result of the dynamics simulations, bearing load diagrams of the boxer- and V-engine were obtained, which were then compared and analyzed.
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Islam, Rabiul, and Samuel Martin. "A Reliability Assessment of a Vessel’s Main Propulsion Engine." Journal of Marine Science and Engineering 13, no. 7 (2025): 1278. https://doi.org/10.3390/jmse13071278.

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Ocean-going vessels rely on marine diesel engines, referred to as the main engine, to carry the vessel’s load and ensure safe travel. These engines play a critical role, as their operation impacts on all aspects of the vessel’s functionality. To meet increasing demands for extended run times while maintaining reliability, it is essential to address the risks of main engine failure. Previous studies have highlighted numerous accidents resulting from such failures. Consequently, the reliability of the main propulsion engine is a crucial component of safe vessel operation. This study addresses the lack of methodologies for predicting engine reliability using failure running hours (FRHs). A data-driven model was developed using FRH data collected from marine engineers during on-board maintenance operations. Additionally, fault tree analysis (FTA) was employed to calculate the reliability of individual subsystems and the overall main propulsion engine. The findings indicate that the lube oil system, freshwater cooling system, scavenge system, and fuel system reach 0% reliability at approximately 2000 h, 14,000 h, 2500 h, and 1400 h of operation, respectively. Additionally, the reliability of the main propulsion engine drops to 0% after around 900 h of operation. By incorporating this prediction model, ship operators can better schedule maintenance, significantly enhancing engine reliability and reducing maritime accidents. This approach contributes to safer and more efficient operations for commercial marine systems. This study represents a vital step toward improving the reliability of ocean-going vessels.
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Harada, Renpei. "Damage of Main Bearings in Main Engine." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 34, no. 5 (1999): 310–19. http://dx.doi.org/10.5988/jime1966.34.310.

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Gorb, Sergii, Maksym Levinskyi, and Mykola Budurov. "Sensitivity Optimisation of a Main Marine Diesel Engine Electronic Speed Governor." Scientific Horizons 24, no. 11 (2022): 9–19. http://dx.doi.org/10.48077/scihor.24(11).2021.9-19.

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Electronic speed governors have become widespread on marine diesel engines. In comparison with hydromechanical ones, they have an additional setting parameter – input signal sensitivity. This parameter allows changing the response of governors to high-frequency disturbances. In camshaft diesel engines, such disturbances are generated when the cams run over fuels pump push rods, while in ME (MAN Energy Solutions) or RT-flex (Wärtsilä) engines they result from the use of inductive sensors with a serrated tape on the diesel shaft for speed measurement. If the engine is used as a main engine on vessels, the governor’s sensitivity additionally allows governors to vary the response to propeller shaft resistance moment fluctuations in sea waves conditions. In practice the value of sensitivity of electronic speed governors of main marine engines is selected intuitively. As a result, the adjustment of governors doesn’t provide satisfactory stability of speed modes at the change of sea conditions. The study aims to develop a methodology for adjusting the sensitivity of main engines electronic speed governors with considering the stochasticity of the load on the diesel engine in sea waves state. The study was carried out using the systems of automatic speed control model, which is based on the assumption of relatively small deviations of diesel engine shaft rotation speed and load parameters at sea waves conditions. Considering the character and magnitude of change of load on diesel engine at sea waves conditions depend on many variables of external conditions (waves levels, course of a vessel in relation to wind-wave conditions, wind gusts, vessel’s loading condition, given speed of a vessel), any set value of sensitivity of electronic speed governors appears to be optimum only for a particular case of vessel movement in sea waves state. The scientific novelty is defined by the fact that recommendations on the choice of governor sensitivity are determined with considering stochasticity of propeller shaft resistance moment fluctuations at sea waves conditions, that increased accuracy, and validity of recommendations. The practical significance of the research consist in the increase of stability of speed modes of the main engine with electronic speed governor at various sea waves conditions
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Murawski, Lech. "Influence of Marine Main Engine Foundations on the Results of Vibration Calculations." Journal of KONES 26, no. 1 (2019): 95–101. http://dx.doi.org/10.2478/kones-2019-0012.

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Abstract The article presents an influence of foundations of slow-speed main engine body on the results of numerical analysis of the engine dynamic stiffnesses and thermal deformations. The engine body is much stiffer than its foundation pads and ship hull (double bottom) – boundary conditions of the engine. Especially for the high power, marine engines, the correct model of the boundary conditions plays a key role during the analyses. Therefore, modelling method of engine foundation (boundary conditions) of that kind of model is essential during the analyses. During shaft line alignment and crankshaft springing analyses, knowledge of dynamic stiffnesses characteristics and thermal displacements of radial (main) bearings is significant. Those data of marine main engine body are difficult to estimate because of lack of available documentation and complicated shape of the engine and ship hull. The article presents the methodology of the characteristics determination of the marine engine's body as well as the example of computations for a MAN B&W K98MC type engine (power: 40000 kW, revolutions: 94 rpm) mounted on a 3000 TEU (twenty-foot container equivalent unit) container ship (length: 250 m). Numerical analyses were performed with usage of Nastran software based on Finite Element Method. The FEM model of the engine body comprised over 800 thousand degree of freedom.
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Fajar, Imron Achmadi, and Miftakhul Jannah Dwi Ratna. "TECHNICAL ANALYSIS OF ENGINE PROPELLER MATCHING KRI X AFTER MAIN ENGINE REPOWERING." International Journal of Marine Engineering and Applications 1, no. 1 (2024): 50–59. https://doi.org/10.30649/ijmea.v1i1.372.

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The gas turbine which is one of the main engines of KRI X is not used anymore because of the amount of damaged material. In 2017 it was decided to replace its main engine. Ships that previously used gas turbines and two diesels as the main engine are replaced with four MTU diesel brands with 4000 HP power and 2100 rpm rotation per engine. With a fixed propeller and a power change on the main engine, the matching point of the main engine also changes. Referring to the problem, this study conducted an assessment of engine propeller matching obtained after repowering the main engine, by calculating the pricing of the ship and calculating the power required by the ship. The calculation of ship resistance is done in two ways that is with the help of running software maxsurf with the Holtrop method and calculation by using an empirical formula. Having known the price of the ship's resistance and power required, then calculated the speed of the ship with the new main engine and the variation of the pitch propeller. The result of this research obtained the operating point (matching point) which resulted in optimum speed obtained at the main rotation condition of 1974 rpm, propeller rotation 452,666 rpm, with 85% power loading that is 6152,426 kW, ship speed reached 17,855 Knot, and in this condition is deemed to be by the operation of the continuous service rating.
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Nazarenko, Sergej, Mykola А. Tkachuk, and Svitlana Marusenko. "MAIN WORKS OF PROFESSOR YA. M. MAYER (A REVIEW)." Bulletin of the National Technical University «KhPI» Series: Engineering and CAD, no. 1 (December 30, 2021): 64–73. http://dx.doi.org/10.20998/2079-0775.2021.1.07.

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The article is devoted to an overview of the scientific and pedagogical activities of a prominent scientist in the field of engine building and mechanical engineering, one of the organizers of the higher school of Ukraine, a public figure, Professor Ya. M. Mayer. In the biographical work, the first study of complex life path and versatile creative heritage of the last rector of Kharkiv Technological Institute, the founder and director of the Ukrainian Research Institute of Internal Combustion Engines, director and scientific leader of the Ukrainian Research Aviation Diesel Institute, one of the creators of the famous V-2 diesel engine, one of the heads of the department «Theory of Mechanisms and Machines» Yakov Moiseevich Mayer. Keywords: engine; engineering science; higher technical education; Ya. M. Mayer; KhPI; scientific school; SE “KhKBD”; diesel
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Takasaki, Koji. "CO2 Reduction from Main Engine." Journal of The Japan Institute of Marine Engineering 50, no. 2 (2015): 198–201. http://dx.doi.org/10.5988/jime.50.198.

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Tursunov, Dilshod. "THE MAIN FACTORS THAT INCREASE THE THERMAL LOAD OF GAS ENGINES." International Journal of Advance Scientific Research 02, no. 12 (2022): 18–26. http://dx.doi.org/10.37547/ijasr-02-12-03.

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In this article, the increase in the thermal load of engines running on gas fuel is considered. Simply put, after starting a cold engine, it first heats up, after which the processes of keeping the heat within the specified limits of the cooling system are studied.
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Dissertations / Theses on the topic "Main engine"

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Jensen, Jonathan Andrew. "Robust discrete estimation of the space shuttle main engine." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/49608.

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Svientsitskiy, Vladyslav, Владислав Віталійович Свенцицкий, Denys Denysiuk, and Денис Олександрович Денисюк. "Main causes of engine failure: impact and preventive measures." Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/50484.

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1. JET ENGINE FAILURES RARE, USUALLY NOT FATAL. URL:https://www.cbsnews.com/news/jet-engine-failures-rare-usually-not-fatal/ 2. Federal Aviation Administration. Retrieved 31 December 2012. URL:"Technical Report on Propulsion System and APU-Related Aircraft Safety Hazards"(PDF). 3. Mike Berry is a 17,000-hour airline transport pilot, is type rated in the B727 and B757 interview. Retrieved 11 March 2013.<br>The work is devoted to engine failure main problems observing the impact of the leading causes and preventive methods to be useful in minimizing quantity such occurrences in order to increase the level of safety in air transportations.<br>Наукова праця присвячена основним причинам відмови двигуна та запобіжним заходам, які можуть бути корисними для мінімізації кількості таких випадків з метою підвищення рівня безпеки під час повітряних перевезень.
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Ho, Nhut Tan 1974. "Failure detection and isolation for the Space Shuttle Main Engine." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9909.

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Miste', Gianluigi. "Variable speed rotor helicopters: optimization of main rotor-turboshaft engine integration." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3424123.

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Variable speed rotors (VSRs) represent an innovative research field for the development of new rotorcraft designs. The possibility to change the rotational speed of a helicopter rotor, as a function of the specific flight condition, makes it possible to achieve optimum performance and relevant fuel consumption reductions. However, issues related to employing a main rotor variable speed are numerous and require an interdisciplinary approach. The present study represents the first effort in the open literature aimed at understanding the performance implications of coupling helicopter trim and turboshaft engine simulations for a VSR model. A gas turbine simulation code, TSHAFT, and a helicopter performance tool, TCOPTER, have been implemented in order to be able to carry out the coupled analysis. Following this, the VSR concept has been tested on a real helicopter case: the models of a UH-60 Black Hawk helicopter and a GE T700 turboshaft engine have been implemented and validated against experimental data. Subsequently, an optimization routine has been employed to find the optimal main rotor speeds which minimize fuel consumption in different helicopter flight conditions. Two different approaches to VSRs have been analyzed: the former employing a traditional fixed ratio transmission (FRT), the latter assuming a continuously variable transmission (CVT). In the FRT case, since the turbine and main rotor speeds are in a fixed ratio, the optimal speed has been calculated as the best compromise between optimal main rotor speed and optimal turbine speed. In the CVT case, the study has been carried out assuming that main rotor and turbine speeds were free to rotate at their optimal speeds. Different simulation cases have been analyzed in order to quantify the benefits related to the optimal main rotor speed depending on flight conditions, altitude and helicopter gross weight. It has been found that coupling both the helicopter and engine model is important to adequately determine the correct rotational speed corresponding to minimum fuel consumption. More than 13% fuel saving has been shown to be feasible. Finally, possible improvements to the VSR concept have been studied. In particular, a trial has been made to redesign the power turbine of the GE T700 in order to improve the efficiency of the engine in a wide speed variation range.<br>I rotori a velocità di rotazione variabile (Variable Speed Rotors, VSR) rappresentano un argomento di ricerca innovativo per lo sviluppo di nuove configurazioni di velivoli a decollo verticale, quali l’elicottero o il convertiplano. La possibilità di modificare la velocità di rotazione del rotore principale, in funzione della specifica condizione di volo, permette di ottenere prestazioni ottimali e significative riduzioni del consumo di carburante. Tuttavia, le problematiche connesse all’impiego di una velocità di rotazione variabile sono numerose e richiedono un approccio di analisi interdisciplinare. Il presente studio si configura come il primo esempio in letteratura di analisi prestazionale eseguita con simulazioni accoppiate rotore e motore turbo-albero per un modello di VSR. Due strumenti di simulazione sono stati implementati al fine di effettuare la suddetta analisi accoppiata: un codice di simulazione di turbomotori a gas (TSHAFT) e un software per la stima dell’assetto e delle prestazioni di un elicottero (TCOPTER). La validità del concetto di rotore a velocità variabile è stata testata su un caso reale: a tale scopo i modelli di un elicottero UH-60 Black Hawk e di un motore turbo-albero GE T700 sono stati implementati e sottoposti a validazione su dati sperimentali. Successivamente, si è proceduto alla costruzione di una routine di ottimizzazione capace di individuare le velocità ottimali del rotore, in funzione delle diverse condizioni di volo dell’elicottero; tali velocità corrispondono alla condizione di minimo consumo di carburante. Sono state analizzate a livello puramente prestazionale due differenti tipologie di VSR: la prima contempla l’utilizzo di una trasmissione tradizionale a rapporto di riduzione fisso (Fixed Ratio Transmission, FRT); la seconda prevede l’impiego un’ipotetica trasmissione a variazione continua (Continuously Variable Transmission, CVT). Nel caso FRT, poiché le velocità di rotazione della turbina e del rotore principale sono in un rapporto fisso, la velocità ottimale è stata calcolata come il miglior compromesso tra la velocità ottimale del rotore principale e quella della turbina. Nel caso CVT, invece, lo studio è stato effettuato assumendo che le velocità di rotore e turbina fossero libere di ruotare alle rispettive velocità ottimali. Diversi casi di simulazione sono stati analizzati, al fine di quantificare i benefici legati alla possibilità di operare alla velocità ottimale del rotore in funzione delle condizioni di volo, dell’altitudine e del peso dell'elicottero. L'accoppiamento del modello dell'elicottero e del modello di motore turbo-albero è risultato determinante per un’adeguata individuazione della velocità corrispondente a consumo minimo. La massima riduzione nei consumi di carburante è stata stimata attorno al 13%. Infine, sono state studiate possibili soluzioni progettuali in grado di apportare ulteriori margini di miglioramento a elicotteri operanti con VSR. In particolare, è stato effettuato un tentativo di riprogettazione preliminare della turbina di potenza del GE T700 con l’obiettivo di incrementarne l’intervallo di funzionamento a massima efficienza. In sostanza si è cercato di rendere le prestazioni della turbina meno sensibili alle variazioni nel numero di giri, cercando di estendere la zona di rendimento massimo attorno al punto di progetto.
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Brown, Joseph R. "Model Identification for the Space Shuttle Main Engine High Pressure Oxidizer Turbopump." Ohio University / OhioLINK, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1239733713.

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AUTORE, CLAUDIO. "Dynamic Models of the Main Sub-Assemblies of a High Performance Engine." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2016. http://hdl.handle.net/2108/202263.

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Questo progetto di tesi focalizza la sua attenzione sulle metodologie di analisi sviluppate per lo studio dinamico di sottoassiemi funzionali per un corretto design di motori a combustione interna ad elevate prestazioni. La progettazione di un motopropulsore e frutto di complesse attivita di concurrent engineering. Un motore e un insieme di sottosistemi interconnessi, dove ciascuno di essi assolve una specica funzione e richiede competenze speciche per essere progettato. Tuttavia non e possibile studiare un sottosistema isolato dagli altri per via delle forti correlazioni. Il lavoro si articola in diverse sezioni, ciascuna della quali volta a indagare nel dettaglio la metodologia di calcolo che di volta in volta si rivela piu idonea. Cuore dell'attivita e l'analisi della distribuzione condotta per mezzo di un modello a parametri concentrati. L'indagine esso-torsionale degli assi a camme sottolinea le interrelazioni funzionali tra i diversi cinematismi. Ampliando il dominio di analisi il modello a parametri concentrati e stato sviluppato per permettere lo studio dinamico del comando distribuzione. La cinematica planare delle catene silent e delle catene a rulli si e resa necessaria per analizzare la dinamica di ogni link delle catene. Forme modali del comando e frequenze di risonanza dello stesso permettono di raggiungere un livello di dettaglio non riscontrato in letteratura. Non solo la distribuzione benecia delle corrette torsionali che vengono in tal modo calcolate, ma il comando stesso si rivela essere oggetto di indagine scrupolosa per la dinamica dei tenditori idraulici e del moto di ogni link della catena: angoli di ingranamento e velocita di impatto su guide e rocchetti possono essere analizzate. I sistemi ausiliari comandati da cinghie sono stati invece trattati per mezzo delle equazioni del continuo. Si e evidenziato come solo un approccio statistico permette di individuare la corretta dinamica se l'obiettivo e l'ottenimento delle forme modali trasversali vii dei rami di cinghia. Non ultima la dinamica dell'albero motore e stata scandagliata nel dettaglio. Un modello parametrico per lo studio della dinamica di motori pluricilindrici e stato sviluppato. Importante in letteratura si e rivelato il contributo relativo all'analisi delle forze di inerzia sbilanciate. Dierenti architetture motoristiche, tra le piu proposte sul mercato, sono state oggetto di indagine. Una metodologia multibody per l'analisi dinamica del motopropulsore rigido e stata inne sviluppata, beneciando delle forzanti di input calcolate dall'indagine sull'albero motore.<br>This thesis focuses on the analytical methodologies developed for the dynamic study of operational subsystems for the correct design of high performance internal combustion engines. The engine design phase is a synthesis of several concurrent engineering activities. An internal combustion engine is a highly complex system made by self-interacting sub-assemblies, each of which requires very specic skills and detailed know-how to be designed: it is nevertheless impossible to design each single component without considering its proper function and how it works coupled with all the other sub-assemblies in the complex engine system. This thesis will explore dierent topics and for each will give a detailed explanation of the analytical approach used to investigate and solve any specic task. The main matter discussed in this work is how to approach and analyse a lumped mass model both the single valve train and the complete chain drive system with a bending-torsional deformable camshaft in order to consider the self-interaction of the dierent valve train systems. In addition this lumped mass model approach is also used to compute and analyse in detail the complex dynamic behaviour of the whole chain drive system. A detailed 2D approach was also used to model the dynamic behaviour for each single link of a roller or silent timing chain drive. As a result it was possible to obtain a reliable and highly accurate model that can be used for calculating the timing drive eigenvectors as well as to describe and analyse the complex dynamic behaviour of hydraulic tensioners and for each chain link the capability to evaluate its tilt angle and the contact impact with the guides. In this thesis belt drive systems are also analysed. The dynamics and vibration of axially moving continua have been extensively studied. The most important output of the study conducted concerns the fact that to gain into the real dynamic behaviour of a v serpentine belt drive system it is necessary to use a statistical approach: a deterministic approach is not sucient to detect the real dynamic response of such a complex dynamic problem. Lastly, the crankshaft dynamics has been in-depth analysed. A parametric model for the multi-cylinder engines has been developed. The contribution of the inertia unbalanced forces has been recognised as important. Various industrial case studies have been analysed. The modelling of the crankshaft dynamics allows the denition of external forces exerted on the engine and transmitted to the chassis through the engine mounts. The theoretical bases for the development of a predictive multibody model of the powertrain dynamics under the action of such external forces have been laid.
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Greco, Philip Andrew. "Turbine performance mapping of the space-shuttle main engine high-pressure fuel turbopump." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA306473.

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Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, September 1995.<br>Thesis advisor(s): Garth V. Hobson. "September 1995." Includes bibliographical references. Also available online.
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Southward, James D. "Laser doppler velocimetry in the space-shuttle main engine high-pressure fuel turbopump." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA342224.

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Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, March 1998.<br>Thesis advisor(s): Garth V. Hobson. "March 1998." Includes bibliographical references (p. 145-147). Also available online.
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Tosun, Mustafa G. "A methodology for multidisciplinary decision making for a surface combatant main engine selection problem." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/42742.

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Approved for public release; distribution is unlimited<br>In the ship design process, delivering optimum performance while reducing development and construction costs are key considerations. A great amount of optimization effort should be done before progressing on a project. When it comes to the main engine selection phase that corresponds to the heart of the ship, the ultimate choice will affect the overall platform. However, the problem of main engine selection is, as is the overall ship design problem in general, basically a multidisciplinary and multicriterion optimization problem. In this project, we will focus on the multicriterion decision- making methodology for a surface combatant main engine selection problem. This study will consist of a collection of systematic approaches to the overall design optimization. The factors that need to be taken into consideration while selecting a main engine for a surface combatant will be discussed. We propose to develop and examine a mathematical model to analyze the main engine selection problem. The mathematical model will be comprehensively formulated, including both quantitative criteria as well as fuzzy systems, to establish an algorithm that will be able to create a unique solution or a set of Pareto solutions to the main engine selection problem.
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Foster, John D. "The application of Quality Function Deployment to the design and manufacture of engine main bearings." Master's thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-02022010-020218/.

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Books on the topic "Main engine"

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Duyar, Ahmet. Identification of space shuttle main engine dynamics. National Aeronautics and Space Administration, 1989.

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George C. Marshall Space Flight Center., ed. Space shuttle main engine turbopump bearing assessment program. National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1994.

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T, Welch John, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., eds. Analysis of the space shuttle main engine simulation. National Aeronautics and Space Administration, Scientific and Technical Information Division, 1993.

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George C. Marshall Space Flight Center., ed. Space shuttle main engine turbopump bearing assessment program. National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1994.

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United States. National Aeronautics and Space Administration., ed. Rocketdyne safety algorithm: Space shuttle main engine fault detection. National Aeronautics and Space Administration, 1994.

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M, Meyer Claudia, and Lewis Research Center, eds. Space engine safety system. National Aeronautics and Space Administration, Lewis Research Center, 1991.

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Ahmet, Duyar, and United States. National Aeronautics and Space Administration., eds. A simplified dynamic model of the space shuttle main engine. National Aeronautics and Space Administration, 1991.

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W, Hawman Michael, United Technologies Research Center, and Lewis Research Center, eds. Framework for a space shuttle main engine health monitoring system. United Technologies Research Center, 1990.

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Lee, Henry. Space shuttle main engine high pressure fuel turbopump turbine blade cracking. National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1988.

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Abdul-Aziz, Ali. Thermal finite-element analysis of space shutle main engine turbine blade. National Aeronautics and Space Administration, Lewis Research Center, 1987.

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Book chapters on the topic "Main engine"

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Roh, Myung-Il, and Kyu-Yeul Lee. "Selection of Main Engine." In Computational Ship Design. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4885-2_6.

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Biggs, Robert E. "Engineering the Engine: The Space Shuttle Main Engine." In Space Shuttle Legacy. American Institute of Aeronautics and Astronautics, Inc., 2013. http://dx.doi.org/10.2514/5.9781624102172.0077.0110.

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Olsen, Alexander Arnfinn. "Introduction to the main engine." In Introduction to Ship Engine Room Systems. Routledge, 2023. http://dx.doi.org/10.1201/9781003321095-4.

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Brusca, Victor G. "Static Main Entry Point." In Introduction to Video Game Engine Development. Apress, 2021. http://dx.doi.org/10.1007/978-1-4842-7039-4_10.

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Brusca, Victor G. "PongClone Main Menu Screen." In Introduction to Video Game Engine Development. Apress, 2021. http://dx.doi.org/10.1007/978-1-4842-7039-4_17.

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Olsen, Alexander Arnfinn. "Key components of the main engine." In Introduction to Ship Engine Room Systems. Routledge, 2023. http://dx.doi.org/10.1201/9781003321095-5.

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Olsen, Alexander Arnfinn. "Main engine pre-start checks and monitoring." In Introduction to Ship Engine Room Systems. Routledge, 2023. http://dx.doi.org/10.1201/9781003321095-6.

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Olsen, Alexander Arnfinn. "Main fuel, diesel, and lube oil tanks on ships." In Introduction to Ship Engine Room Systems. Routledge, 2023. http://dx.doi.org/10.1201/9781003321095-28.

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Reinhardt, Kurt. "Critical Item Ranking for the Space Shuttle Main Engine." In Risk Analysis. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-0730-1_33.

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Aybar, Cesar, David Montero, Antony Barja, Fernando Herrera, Andrea Gonzales, and Wendy Espinoza. "Combining R and Earth Engine." In Cloud-Based Remote Sensing with Google Earth Engine. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-26588-4_31.

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AbstractThe purpose of this chapter is to introduce rgee, a non-official API for Earth Engine. You will explore the main features available in rgee and how to set up an environment that integrates rgee with third-party R and Python packages. After this chapter, you will be able to combine R, Python, and JavaScript in the same workflow.
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Conference papers on the topic "Main engine"

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Sidle, Stacy, Matt Feshler, Peter Kull, Ananth Sridharan, and Inderjit Chopra. "Investigation of Engine-Airframe Vibration Due to Main Rotor Hub Loads Using a Substructuring Framework." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12049.

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This paper presents a methodology to analyze the coupled structural dynamic response of an elastic airframe and engines of a helicopter in response to main rotor and tail rotor hub loads. Transfer functions of individual components (airframe, engine, mount struts and torque tube) are coupled together using a sub-structuring approach to obtain consistent coupled solutions of the entire system. Using this approach, the two-engined and four-bladed S- 92 R helicopter is analyzed using NASTRAN-based models of the Sikorsky airframe and GE CT7-8 R engine. This ultra-efficient substructuring approach is validated against the fully coupled NASTRAN model using forced response studies. Characteristics of the mount properties, i.e., the torque tube stiffness, and aft mount stiffness and damping are systematically varied to study their effect on the engine vibration response. The fore and aft mount element properties for minimizing the 8/rev engine response are identified without increasing 4/rev response. A compromise between 4/rev and 8/rev response is also identified from parametric studies of rear mount properties, using just 3 parameters to represent the design space. Using the sub-structuring approach presented here, future studies can be performed to rapidly match airframe characteristics with available engines at approximately 1000 times the speed of running a detailed finite element model (millions of degrees of freedom), without any reduction in accuracy.
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Worlund, A., and J. Hastings. "Space Shuttle Main Engine evolutions." In 37th Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-3417.

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Valdiviez, Robert, M. Rath, H. Schmitz, and M. Steenborg. "Cassini main engine assembly testing." In 32nd Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-2865.

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Canilang, Benjamin, and David Zipkin. "LCAC Main Engine Installed Performance." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50639.

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This paper investigates the installed performance of the ETF40B marine gas turbine engine (MGTE) on SLEP LCAC. Historical estimates of intake and uptake losses for SLEP LCAC have proven inaccurate, resulting in loss of available power for hump transition. A recent computational fluid dynamic (CFD) analysis of the uptakes revealed a possible 1000% increase in actual uptake losses. NSWCCD was tasked to evaluate and correct these detrimental deficiencies. This paper documents the development of the performance testing and results. Specifically, NSWCCD performed CFD analyses of the uptake configuration, designed pressure/temperature rakes, developed a unique DAQ schema, and statistical analysis of the average engine based upon acceptance test procedures (ATP), and generation of new torque tables based upon the LCAC drive train limits.
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LUCCI, A., and F. KLATT. "Space Shuttle main engine product improvement." In 21st Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-1266.

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KLATT, F. "Space Shuttle Main Engine operational status." In 21st Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-1325.

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Xu, Jiwei, and Ming Zhao. "Reliability Analysis for Main Engine Control of CFM56-3 Engine." In 2015 International Conference on Advances in Mechanical Engineering and Industrial Informatics. Atlantis Press, 2015. http://dx.doi.org/10.2991/ameii-15.2015.311.

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SMELSER, JERRY. "Space Shuttle main engine technology and enhancements." In Space Programs and Technologies Conference. American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-3534.

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CIKANEK, III, HARRY. "Characteristics of Space Shuttle Main Engine failures." In 23rd Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1987. http://dx.doi.org/10.2514/6.1987-1939.

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MCCONNAUGHEY, H., and G. LYLES. "Space transportation main engine cycle assessment process." In 27th Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-2035.

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Reports on the topic "Main engine"

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Suzuki, Tatsuaki, Hiroaki Yonetani, and Itaru Fukutani. Influence of Main-Chamber Parameter in DME IDI Compression Ignition Engine. SAE International, 2005. http://dx.doi.org/10.4271/2005-08-0189.

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Nowlin, Jacob, Kevin Wallace, Kyle Beurlot, Mark Patterson, and Timothy Jacobs. PR-457-21206-R01 CFD Study of Prechamber NOx Production Mechanisms. Pipeline Research Council International, Inc. (PRCI), 2023. http://dx.doi.org/10.55274/r0000027.

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Use of the pre-combustion chamber (PCC) as an ignition source in large-bore natural gas engines has shown promise in reducing emissions. By increasing the ignition energy and surface area via a turbulent jet, these devices can extend the lean operating limit of the engine and reduce oxides of nitrogen (NOx). This study aims to characterize the sensitivity of main chamber NOx formation to changes in the PCC jet. A CFD model of a Cooper-Bessemer GMV two-stroke lean-burn natural gas engine is used for this purpose. The temperature and chemical composition of the PCC jet are varied across several tasks, and the resulting changes in main chamber NO and shy;x emissions are recorded. Three-dimensional plotting tools are used to determine where and when NOx forms in the engine during the cycle. Data on the chemical pathways to NO and NO2 and shy; and shy; formation and destruction is also presented.
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Beurlot, Kyle, Greg Vieira, Taylor Ritchie, Jacob Nowlin, Daniel Olsen, and Timothy Jacobs. PR457-21204-R01 Evaluation of New Ignition Concepts on Large Bore NG Engines for Methane Emissions. Pipeline Research Council International, Inc. (PRCI), 2023. https://doi.org/10.55274/r0012251.

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Pre-combustion chambers are frequently used in large-bore natural gas engines to improve ignition repeatability and combustion quality while simultaneously enabling substantial engine emission reductions. Specifically, prechambers reduce the carbon footprint of natural gas pipeline engines, and by extension, reduce greenhouse gas emissions from pipeline compressor stations. A study to provide an initial screening of a number of new ignition techniques in a Cooper-Bessemer GMV two-stroke lean burn natural gas engine was conducted using Converge CFD software in order to guide original equipment manufacturers (OEMs) and technology providers in improving combustion processes and reducing methane emissions. Various designs for multi-nozzle and directional prechambers were created and tested for the best performance against an OEM design. Additionally, the pre-ignition introduction of radical species was investigated by implementing a radical-generating prechamber to seed the main combustion chamber with species before ignition by the primary prechamber. Finally, the efficacy of a plasma fuel reforming system tuned to target and fragment methane in the main chamber fuel stream was studied. This study provides an initial numerical screening of new ignition techniques to determine which, if any, techniques are promising for reducing methane emissions through ignition system improvements and should be further examined with on-engine experimental evaluation.
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Ladd, Stevens, and Olsen. PR-179-15212-R01 Methane Reduction Data Analysis for 2-Stroke Lean Burn Natural Gas Engines. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0011013.

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Existing test data from the Engines and Energy Conversion Laboratory and other sources are analyzed to examine the impact of retrofit technologies and operating parameters on greenhouse gas emissions. CO2, CH4, and CO2e (equivalent CO2) emissions are the focus of the study. The data analysis is focused on 4 main categories, engine performance maps, retrofit technology, uncontrolled parameters, and NOx permit level. Examination of the impact of HP replacement is also performed.
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Banji, Titilope, and Daniel Olsen. PR-179-22207-R01 Improved In-Cylinder Mixing Injection Pressure Sensitivity. Pipeline Research Council International, Inc. (PRCI), 2024. http://dx.doi.org/10.55274/r0000063.

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Large-bore, natural gas-fueled engines are used for gas compression at over 1700 compression stations across the US, and methane emissions have presented a challenge to their optimization over the years. A significant root of this problem has been linked to the level of air-fuel mixing in the main combustion chamber of these engines as poor mixing results in low combustion efficiency. High-pressure fuel injection is believed to be a significant way to improve air-fuel mixing in natural gas engine combustion chambers. The purpose of this present study is to determine the sensitivity of in-cylinder mixing to injection pressures, using CFD simulations, determine the limits of high-pressure fuel injection, and explore the possibility of improving low-pressure fuel injection. The engine modeled using CONVERGE Studio for CFD was the large 4-cylinder GMV 4TF engine. The model was simulated for four major sets of configured cases - baseline establishment, ideal mixing case development, injection pressure variation, and low-pressure, high-momentum cases. The results of this work show that improved mixing potentially reduces the amount of methane emissions by half and high-pressure fuel injection also improves the in-cylinder mixing in the main combustion chambers of large bore engines. The optimal timing for the injection at different injection pressures was determined and the limitations in each case were identified. It was concluded that fuel injection at 700 psi at -110 degrees BTDC gave the best mixing case. The level of mixing in low-pressure fuel injection systems was also found to be improved by up to 39% by having high-momentum fuel injection using increased flow areas at injection.
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Beshouri, Huschenbett, and Bothwell. PR-360-08207-R01 Cylinder Level Sensing and Control on Typical Pipeline Engines. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0010693.

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Further reductions in NOx emissions while maintaining optimum engine performance can only be obtained by improving engine combustion control at the cylinder level. This requires cylinder level sensors capable of continuously monitoring combustion performance in both the main combustion chamber (MCC) and the pre-combustion chamber (PCC) and electronically actuated valves that can respond to those measurements. Until recently, in-PCC combustion measurements on spark ignited engines were only possible in the laboratory using very expensive pressure sensors with extremely short lives. Ion Sense offers a non-intrusive, robust and cost effective method to monitor in-PCC combustion in the field on a continuous basis. Derived from automotive technology, ion sense utilizes post ignition ionization measurements from a standard spark plug. When measured from a spark plug mounted in a PCC Ion Sense provides a wealth of previously unavailable information on misfire, instability, flame initiation, early flame propagation, in PCC air/fuel ratio, etc. This work investigated the use of ion sense data collected in the PCC to monitor and control in PCC air/fuel ratio, main chamber air/fuel ratio and the timing of combustion events in both. This paper reports on the results of this testing as well as describing the optimization strategy developed which is applicable to the full range of pipeline engines.
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Fieseler, Kelsey, and Timothy Jacobs. PR-457-14201-R04 Variable NG Composition Effects on LB 2SC Integral Engines. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011525.

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The overall goal of this project is to improve upon existing engine control strategies of large bore, fuel-lean natural gas engines in order to increase efficiency and maintain emissions compliance during variable fuel composition events. This will be done by simulating the effects of variable fuels in a natural gas engine, and if necessary, develop engine control methods. Phase III builds upon the work of previous phases by implementing detailed cylinder-level geometry, increasing the number of alkane species in the laminar flame speed and ignition delay solutions, and incorporating a prechamber model into the full-scale engine simulation of a Cooper-Bessemer GMWH-10C. The piston motion and port profiles were calculated from known engine geometry as a way to simulate cylinder compression and expansion as well as cylinder scavenging. The species considered were increased from binary mixtures of methane and ethane to quinary mixtures of methane, ethane, propane, butane, and pentane in order to capture the effects of heavier hydrocarbons. The laminar flame speed and ignition delay equations were developed using the same method utilized in the previous phase, but the laminar flame speed was implemented differently. Two predictive combustion simulations were developed in GT-Power. The first simplifies the combustion chambers into just one open chamber. The second includes the actual cylinder volumes: two small prechambers attached to the main chambers. Both of these models were tuned and validated against experimental data.
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Beurlot, Kyle, and Timothy Jacobs. PR457-242002-R01 Hydrogen and Natural Gas Mixtures in 2 Stroke Engines for Methane Reductions. Pipeline Research Council International, Inc. (PRCI), 2025. https://doi.org/10.55274/r0000108.

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Large-bore natural gas two-stroke engines with lean-burn technology have been integral to the North American pipeline network for many years and will remain crucial for future gas transportation. As research focuses on achieving lower lean ignition limits, pre-combustion chambers have gained attention as a promising method to enhance combustion stability and engine reliability. However, retrofitting existing platforms with pre-combustion chambers may not always be financially viable, which calls for further exploration of alternative technologies that could reduce methane emissions from two-stroke open-chamber (OC) engines. Hydrogen dithering in natural gas has demonstrated potential for methane emissions reduction, yet significant gaps in understanding persist, particularly in terms of its impact on other pollutants like nitrogen oxides (NOx). This study intends to further research on evaluating various concentrations of hydrogen gas blended into a natural gas fuel stream on an OC engine platform as a pathway to reduce methane emissions. The resulting effects were then thoroughly analyzed to assess the impact on general combustion performance, including main chamber pressure, temperature, heat release rate, emissions, power levels, and rate of pressure rise.
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Mitchel, Olsen, and Fletcher. L52072 Literature Review - Formaldehyde Formation Mechanisms in Large Bore Natural Gas Engines. Pipeline Research Council International, Inc. (PRCI), 1999. http://dx.doi.org/10.55274/r0010950.

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Previous work has shown that the only hazardous air pollutant of significance in the emissions from large natural gas engines is formaldehyde. In consequence, a detailed literature review was carried out in order to assess the current state of knowledge about formaldehyde formation mechanisms and evaluate its applicability to gas engines. Of particular interest was the identification of locations, events and operating conditions in large-bore engines which favor formaldehyde formation or its destruction. To complete the review and create this report, available technical databases were searched, abstracts were reviewed, and key publications were identified and then read thoroughly. The report has four main sections: first, a brief introduction and problem statement; second, an extensive review of possible formaldehyde formation mechanisms and paths to engine-out emissions; third, an evaluation of factors which may affect formaldehyde emissions from large-bore gas engines; and finally a statement of conclusions and suggestions for further work.
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Beurlot, Kyle, and Timothy Jacobs. PR457-23203-R01 Investigation of Supersonic Prechamber Jets. Pipeline Research Council International, Inc. (PRCI), 2025. https://doi.org/10.55274/r0000116.

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Lean-burning, large-bore two-stroke natural gas engines have long been essential elements of the North American natural gas pipeline system and will continue to play a crucial role in natural gas transportation for the foreseeable future. However, with increasing pressure to reduce emissions, improving the performance of this aging engine fleet has become more critical than ever. Pre-Combustion Chambers (PCCs) are frequently implemented on these engines to improve ignition stability, extend the lean limit of operation, and significantly reduce harmful emissions such as nitrogen oxides (NOx) and hydrocarbons (HC). While PCCs help reduce the carbon footprint of pipeline compressor stations, ongoing research into the pathway toward reduced emissions re-mains essential, as many avenues are still to be explored. This study aims to further research into novel subsonic converging and supersonic converging-diverging PCC nozzle designs that could potentially reduce methane emissions. A computational fluid dynamics (CFD) model of Texas A and M's Cooper Ajax E-565 large-bore natural gas lean burn two-stroke was utilized in a prechambered configuration for the study. Several converging nozzles of decreasing size and converging-diverging nozzles of various throat diameter, area expansion ratio, and shape were explored to produce PCC jets of different shape, spread, and level of penetration into the main combustion chamber (MCC). The resultant jet effects were then heavily analyzed for impacts to general cycle performance, such as main chamber pressure, temperature, NOx emissions, and methane emissions.
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