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Articles de revues sur le sujet « Engitec »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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1

Kania, Henryk, and Mariola Saternus. "Evaluation and Current State of Primary and Secondary Zinc Production—A Review." Applied Sciences 13, no. 3 (2023): 2003. http://dx.doi.org/10.3390/app13032003.

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This article presents the history of zinc, its production and demand. The quantity of zinc production, both primary zinc from ores and concentrates, and secondary zinc from scrap and zinc-rich waste, was discussed. A comprehensive economic analysis covers zinc prices in the years 1960–2021. The basic methods of obtaining zinc from ores, including pyrometallurgical (Imperial Smelting Process ISP, Kivcet, Ausmelt) and hydrometallurgical (roasting–leaching–electrowinning RLE, atmospheric direct leaching ADL, Engitec Zinc Extraction EZINEX, zinc pressure leach) and their short characteristics, are

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Lister, A. "II — A. Lister." Journal of Navigation 38, no. 3 (1985): 431–35. http://dx.doi.org/10.1017/s0373463300032793.

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Several years ago, when Airbus Industrie launched their twin-engined A 300 Airbus, it became apparent that a new generation of long-range aircraft was about to add a different facet to the shape of international air travel. The enormous power available from the big fan engines coming into use meant that adequate performance was available even when an engine failure meant the loss of half the installed thrust. Coupled to this was a standard of fuel economy and tank capacity which meant that the new aircraft were capable of operating over ranges far in excess of those previously attained by twin

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Rubino, L., R. I. Crane, J. S. Shrimpton, and C. Arcoumanis. "An electrostatic trap for control of ultrafine particle emissions from gasoline-engined vehicles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 4 (2005): 535–46. http://dx.doi.org/10.1243/095440705x6668.

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Health concerns over ultrafine (< 100 nm) particles in the urban atmosphere have focused attention on measurement and control of particle number as well as mass. Gasoline-engined as well as diesel-engined vehicles are likely to be within the scope of future particulate matter (PM) emission regulations. As a potential option for after-treatment of PM emissions from gasoline engines, the trapping performance of a catalysed wire-cylinder electrostatic trap has been investigated, first in a laboratory rig with simulated PM and then in the exhaust of a direct injection spark ignition engine. In

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Al-Tael, Arkan K., Ihsan Y. Hussain, and Shakir J. Jasim Al-Saeedi. "TRANSIENT PERFORMANCE OF A SINGLE-SPOOL TURBOJET ENGINE." Journal of Engineering 9, no. 01 (2003): 137–49. http://dx.doi.org/10.31026/j.eng.2003.01.12.

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The transient performance (acceleration and deceleration) analysis of turbojet gas turbine engire has been carried out in the present work. Transient simulation of the engines is based on the compatibility of flow and rotational speed but not of work. Gas turbine simulation is a general- purpose simulation developed for steady state (matching) study. Matching is achieved by zeroing the difference in mass flow rate of adjacent components, and work of compressor-turbine pairi Steady state is taken as an initial condition for transient simulation of the engine. The factors indicating engine limit

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Wilde, G. L. "A New Approach to the Design of the Large Turbofan Power Plant." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 209, no. 2 (1995): 85–104. http://dx.doi.org/10.1243/pime_proc_1995_209_277_02.

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The lower direct operating costs of the Big Twin subsonic transports encourage the building of ever larger turbofan engines installed on the wings. The steadily improving reliability of the turbofans and the good safety statistics of twin-engined aircraft over many years encourages this trend. Fuel economy is still the dominant factor in determining the design layout of turbofan engines. It requires the combination of the highest possible thermal efficiency of the gas generator core of the engine with optimum propulsion efficiency of the power plant as a whole in cruise flight, allowing for en

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Zheng, Daopeng. "Evolution of engines: From steam to turbojet." Theoretical and Natural Science 31, no. 1 (2024): 109–12. http://dx.doi.org/10.54254/2753-8818/31/20241149.

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Engines, the mechanical workhorses powering modern societies, have a rich historical evolution, the Industrial Revolution marks a turning point, James Watts improvements, the rise of internal combustion engines, first with Nikolaus Ottos four-stroke cycle, later Rudolf Diesels compression-ignition engine. These engines fueled the automotive and aviation revolutions. In contrast, the Stirling engine, patented by Robert Stirling in 1816, offered a unique closed-cycle operation. Engines, from steam to internal combustion, continue to underpin technological advancements, shaping economies, industr

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Moghtadaei, Anahita. "Aircraft Engine Maintenance and Digital Twin Technology in Aircraft Engines." Journal of Data Analytics and Engineering Decision Making 1, no. 1 (2024): 01–05. https://doi.org/10.33140/jdaedm.01.01.06.

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Aircraft engine maintenance stands as a critical aspect of aviation safety and operational efficiency. Traditional methods often rely on periodic inspections and scheduled maintenance routines, which may not fully capture the dynamic conditions and potential anomalies within the engine. This article explores the integration of digital twin technology into aircraft engine maintenance processes, offering real-time monitoring, predictive analytics, and explanations of the role of human factors in aircraft engine maintenance are given and explain simulation capabilities to optimize maintenance str

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Salama, Ramiz, and Mohamed ElSayed. "Basic elements and characteristics of game engine." Global Journal of Computer Sciences: Theory and Research 8, no. 3 (2018): 126–31. http://dx.doi.org/10.18844/gjcs.v8i3.4023.

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Contemporary game engines are invaluable tools for game development. There are many engines available, each of them which excel in certain features. Game Engines is a continuous series that helps us to make and design beautiful games in the simplest and least resource way. Game drives support a wide variety of play platforms that can translate the game into a game that can be played on different platforms such as PlayStation, PC, Xbox, Android, IOS, Nintendo and others. There is a wide range of game engines that suit every programmer and designed to work on Unity Game Engine, Unreal Game Engin

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Zhang, Min. "Comparing different types of engines and efficiency-a literature review." Theoretical and Natural Science 11, no. 1 (2023): 172–78. http://dx.doi.org/10.54254/2753-8818/11/20230404.

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The goal of this research was to evaluate and contrast the performance of various engine types. The study was conducted on a sample of two engines, one of which is an Internal Combustion engine and the other is an External combustion engine. The internal combustion engine has two cycles, Otto cycle is used in gasoline engines while the diesel cycle is used in diesel engines. The external engine has two cycles too, the submarine uses Stirling Cycle and the Thermal power plant uses the Rankine cycle. The engines were evaluated based on their thermal efficiency, brake power, and specific fuel con

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Ke, Zhenying, Yang Xu, and Zihao Guo. "Analysis of the social impact of heat engine and its future application." IOP Conference Series: Earth and Environmental Science 1011, no. 1 (2022): 012007. http://dx.doi.org/10.1088/1755-1315/1011/1/012007.

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Abstract This paper aims to evaluate the social impact of the heat engine and analyze the application of heat engines in the future. This paper starts with some background information on heat engines and the challenges of gas pollution and gas shortage. The concepts of efficiency and environmental friendliness of the heat engine are widely discussed, which speeds up the development of several kinds of heat engines. We discuss the application of heat engines in different industries from three main aspects: agriculture, marine engine, and aviation. They improve our daily life and provide the req

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Sun, Yijia. "Comparative study on the performance of traditional engines and hybrid engines." Theoretical and Natural Science 5, no. 1 (2023): 649–57. http://dx.doi.org/10.54254/2753-8818/5/20230424.

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Engines are very important for human-beings and it is necessary for people to find a perfect kind of engines since they are used in many vehicles. In this paper, it will mainly focus the traditional engines and the hybrid engines, and compare there main performances including economical performance and environmental performance. For economical performance, researches have found that hybrid engine has higher thermal efficiency and lower thermal efficiency loss compared with traditional engine because hybrid engine does not have the inherent defect of crankshaft linkage mechanism as traditional

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Biernat, Krzysztof, Izabela Samson-Bręk, Zdzisław Chłopek, Marlena Owczuk, and Anna Matuszewska. "Assessment of the Environmental Impact of Using Methane Fuels to Supply Internal Combustion Engines." Energies 14, no. 11 (2021): 3356. http://dx.doi.org/10.3390/en14113356.

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This research paper studied the environmental impact of using methane fuels for supplying internal combustion engines. Methane fuel types and the methods of their use in internal combustion engines were systematized. The knowledge regarding the environmental impact of using methane fuels for supplying internal combustion engines was analyzed. The authors studied the properties of various internal combustion engines used for different applications (specialized engines of power generators—Liebherr G9512 and MAN E3262 LE212, powered by biogas, engine for road and off-road vehicles—Cummins 6C8.3,

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MITIANIEC, Władyslaw, and Konrad BUCZEK. "Modification of four-stroke engine for operation in two-stroke cycle for automotive application." Combustion Engines 162, no. 3 (2015): 3–12. http://dx.doi.org/10.19206/ce-116860.

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The main disadvantages of two-stroke engines such a big fuel consumption and big emission of hydrocarbons or carbon monoxide can be reduced by new proposal of design of two stroke engine based on four stroke engines. The paper describes the operation of high supercharged spark ignition overhead poppet valve two-stroke engine, which enables to achieve higher total efficiency and exhaust gas emission comparable to four-stroke engines. The work of such engines is possible by proper choice of valve timings, geometrical parameters of inlet and outlet ducts and charge pressure. The engine has to be

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Razzhivin, A., N. Limanova, and V. Kozlov. "Comparative Analysis of Game Development Tools." Bulletin of Science and Practice, no. 7 (July 15, 2023): 250–52. http://dx.doi.org/10.33619/2414-2948/92/35.

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This article discusses several engines used for game development. Developers use game engines as a tool to manage complex aspects of the gameplay. The article describes several engines: Unity, Unreal Engine and Cry Engine to choose the best one for the initial stages of development. Research has shown that Unity is a suitable engine for small development teams, Unreal Engine is designed to develop high-quality games with intense graphics, while the feature of Cry Engine is to create realistic natural environments.

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Chen, Ruiyang. "Advanced development and future of jet engines." Theoretical and Natural Science 12, no. 1 (2023): 162–66. http://dx.doi.org/10.54254/2753-8818/12/20230457.

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An aerodynamic reaction engine, a jet engine, is an internal combustion engine that produces thrust through jet thrust. A jet engine is an important power unit used in aviation and spaceflight, which generates thrust by pushing air in reverse. In recent decades, various developments and improvements have significantly enhanced the efficiency and performance of jet engines. These engines are divided into turbojets, turbojets, turboprops, turboshafts, and ramjets. This article will begin with an introduction to the different types of jet engines and then detail the design, benefits, and issues o

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Rabeta, Bismil, Mohammad A.F Ulhaq, Aswan Tajuddin, and Agus Sugiharto. "Simulasi Graphical User Interface Analisis Termodinamika Mesin Turboprop Menggunakan Perangkat Lunak Matlab R2020a." Jurnal Teknologi Kedirgantaraan 6, no. 2 (2021): 31–50. http://dx.doi.org/10.35894/jtk.v6i2.44.

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A turboprop engine is a hybrid engine that delivers thrust or jet thrust and also drives the propeller. This is basically similar to a turbojet except the turbine works through the main shaft which is connected to the reduction gear to rotate the propeller in front of the engine. This research was conducted to determine the development of engine performance in thermodynamic analysis so as to know the value of each parameter on a engine that has been developing for 20 to 50 years with different engine manufacturing. So that in this study a comparison of the thermodynamic analysis of the TPE-331

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Shokrollahihassanbarough, Farzad, Ali Alqahtani, and Mirosław Wyszynski. "Thermodynamic simulation comparison of opposed two-stroke and conventional four-stroke engines." Combustion Engines 162, no. 3 (2015): 78–84. http://dx.doi.org/10.19206/ce-116867.

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Today’s technology leveraging allows OP2S (Opposed Piston 2-Stroke) engine to be considered as an alternative for the conventional four-stroke (4S) engines as mechanical drive in various applications, mainly in transportation. In general, OP2S engines are suited to compete with conventional 4-stroke engines where power-to-weight ratio, power-to-bulk volume ratio and fuel efficiency are requirements. This paper does present a brief advent, as well as the renaissance of OP2S engines and the novel technologies which have been used in the new approach. Also precise thermodynamic benefits have been

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Gao, Fengquan, Quan Jin, and Tianyi Zhao. "Performance comparison between traditional engines and various alternative engines." Applied and Computational Engineering 3, no. 1 (2023): 195–203. http://dx.doi.org/10.54254/2755-2721/3/20230412.

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The automobile engine is a device that converts the chemical energy of fuel into mechanical energy. In all parts of the car, the engine, as an important component, has an important impact on the working performance and life of the car. In recent years, it has caused many scholars to research the automobile engine. Since James Watt first modified the steam engine, the development of the engine has involved major issues. It is of great significance and value to carry out the research and analysis of automobile engines. This paper will introduce three different engines, namely internal combustion

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Minh, Thang Nguyen, Hieu Pham Minh, and Vinh Nguyen Duy. "A review of internal combustion engines powered by renewable energy based on ethanol fuel and HCCI technology." AIMS Energy 10, no. 5 (2022): 1005–25. http://dx.doi.org/10.3934/energy.20220046.

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<abstract> <p>In general, as compared to conventional combustion engines, the homogeneous charge compression ignition (HCCI) engine offers better fuel efficiency, NOx, and particulate matter emissions. The HCCI engine, on the other hand, is not connected to the spark plugs or the fuel injection system. This implies that the auto-ignition time and following combustion phase of the HCCI engine are not controlled directly. The HCCI engine will be confined to a short working range due to the cold start, high-pressure rate, combustion noise, and even knocking combustion. Biofuel innovat

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Minh, Thang Nguyen, Hieu Pham Minh, and Vinh Nguyen Duy. "A review of internal combustion engines powered by renewable energy based on ethanol fuel and HCCI technology." AIMS Energy 10, no. 5 (2022): 1005–25. http://dx.doi.org/10.3934/energy.2022046.

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<abstract> <p>In general, as compared to conventional combustion engines, the homogeneous charge compression ignition (HCCI) engine offers better fuel efficiency, NOx, and particulate matter emissions. The HCCI engine, on the other hand, is not connected to the spark plugs or the fuel injection system. This implies that the auto-ignition time and following combustion phase of the HCCI engine are not controlled directly. The HCCI engine will be confined to a short working range due to the cold start, high-pressure rate, combustion noise, and even knocking combustion. Biofuel innovat

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D.Minnie and S.Srinivasan. "META SEARCH ENGINE WITH AN INTELLIGENT INTERFACE FOR INFORMATION RETRIEVAL ON MULTIPLE DOMAINS." International Journal of Computer Science, Engineering and Information Technology (IJCSEIT) 1, no. 4 (2011): 37–45. https://doi.org/10.5281/zenodo.3542608.

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This paper analyses the features of Web Search Engines, Vertical Search Engines, Meta Search Engines, and proposes a Meta Search Engine for searching and retrieving documents on Multiple Domains in the World Wide Web (WWW). A web search engine searches for information in WWW. A Vertical Search provides the user with results for queries on that domain. Meta Search Engines send the user’s search queries to various search engines and combine the search results. This paper introduces intelligent user interfaces for selecting domain, category and search engines for the proposed Multi-Domain M

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Binnig, Carsten. "Technical Perspective for Skeena: Efficient and Consistent Cross-Engine Transactions." ACM SIGMOD Record 52, no. 1 (2023): 26. http://dx.doi.org/10.1145/3604437.3604443.

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The paper proposes a solution to the problem of inadequate support for transactions in multi-engine database systems. Multi-engine database systems are databases that integrate new (fast) memory-optimized storage engines with (slow) traditional engines, allowing the application to use tables in both engines. Multi-engine database systems are in particular interesting for traditional database systems that are extended over time. By being able to store tables in slow and fast storage engines and executing transactions cross engines allows to reduce overall cost since less performance critical ta

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French, C. C. J. "Alternative Engines—Curiosities or Competitors?" Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power Engineering 203, no. 2 (1989): 79–96. http://dx.doi.org/10.1243/pime_proc_1989_203_012_02.

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This paper describes different types of engine used for transportation purposes. Some of the more interesting developments in spark ignition and diesel engines are outlined, but the paper is mainly a review of some of the alternative power plants that have been studied over the past 40 years. These include vapour cycle engines, free-piston engines, compound engines, Stirling engines, gas turbines, stratified charge engines, the catalytic engine, rotary engines and two-stroke spark ignition engines. The paper concludes by discussing possible future developments for some of these alternative eng

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Тимошевський, Борис Георгійович, Олександр Сергійович Митрофанов, Андрій Станіславович Познанський та Аркадій Юрійович Проскурін. "АНАЛІЗ КОНСТРУКЦІЇ ТА ТЕХНОЛОГІЇ ВИГОТОВЛЕННЯ ПЕРСПЕКТИВНИХ РОТОРНО-ПОРШНЕВИХ ДВИГУНІВ". Aerospace technic and technology, № 4 (28 серпня 2020): 28–37. http://dx.doi.org/10.32620/aktt.2020.4.04.

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The article discusses the main directions of development of creating new modern and improving existing rotary piston engines. The need for a systematic analysis of existing similar engine designs is established to separate and systematize their advantages and disadvantages at the design stage. As an analysis of the design and manufacturing technology of the existing most promising rotary piston engines, turbocompressor-type circuits with a movable cylinder block is considered, the engines in which the combustion takes place outside the working cylinder, the drum-piston type with movable combus

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Li, Zifan. "Analysis of the Principle and Applications of Four-stroke Engines in Transportation." Applied and Computational Engineering 98, no. 1 (2024): 195–202. http://dx.doi.org/10.54254/2755-2721/98/2024fmceau0113.

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Abstract. Four-stroke engines a type of internal combustion engine (IC engine) that can turn the heat provided from the fuel to work, and they are mainly classified as two groups, which are gasoline engines and diesel engines. Four-stroke engines can be applied to high power machines because of its high thermal efficiency. In four-stroke engines, the piston reaches the dead center four times in the cylinder to complete a cycle. This cycle includes the taking in of gas, the compression, the ignition, the expansion and the exhaustion of gas. In gasoline engine, this cycle is called the Otto cycl

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Ye, Zheng Mao, and Habib Mohamadian. "Simple Engine Exhaust Temperature Modeling and System Identification Based on Markov Chain Monte Carlo." Applied Mechanics and Materials 598 (July 2014): 224–28. http://dx.doi.org/10.4028/www.scientific.net/amm.598.224.

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Even though actual composition of engine exhaust gases varies across diverse types of engines, such as gasoline, diesel, gas turbine and natural gas engines, engine exhaust temperature is always a major factor with strong impact on emission levels and catalytic converting efficiency. For spark ignition engines, exhaust temperature depends on various engine parameters, such as engine speed, engine load, A/F ratio, intake air temperature, coolant temperature and spark timing, etc. Due to complexity, it is impossible to share a unique analytical model of engine exhaust temperature. Instead, it is

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Noh, Kichol, and Changhee Lee. "Development of an Ignition System and Assessment of Engine Performance and Exhaust Characteristics of a Marine Gas Engine." Sustainability 13, no. 8 (2021): 4097. http://dx.doi.org/10.3390/su13084097.

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In recent years, marine engine manufacturers have become increasingly interested in gas engines as an alternative to diesel engines to address rising crude oil prices and environmental regulations. In this study, a 1.6 MW dedicated gas engine was developed based on a diesel engine with bore 220, stroke 300. The developed gas engine had a precombustion chamber and exhibited excellent performance; the brake mean effective pressure was 2.1 MPa at 1000 rpm and NOx emissions were 50 ppm under 15% O2. In particular, it demonstrated excellent fuel economy with a thermal efficiency of 45%, and its car

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Fryer, Chris L. "Compact Remnant Constraints on the Core-Collapse Engine." Proceedings of the International Astronomical Union 16, S363 (2020): 19–32. http://dx.doi.org/10.1017/s1743921322000527.

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AbstractThe convection-enhanced neutrino-driven supernova engine’s success in explaining a myriad of supernova properties has set it as the standard engine behind supernova. However, due to the success of rotationally-powered engines in explaining astrophysical transients like gamma-ray bursts, these engines have been revived as possible drivers of normal supernovae, competing with this standard engine. In this paper, these competing engines, and the constraints placed by compact remnant observations on these engines, are reviewed. We find that, with these constraints, such rotationally-powere

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Duan, Chen, Shui Ming Shu, Guo Zhong Ding, and Ji Wei Yan. "Preliminary Design and Adiabatic Analysis of a 3kW Free Piston Stirling Engine." Applied Mechanics and Materials 325-326 (June 2013): 277–82. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.277.

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In recent years, as one kind of Stirling engines, free piston Stirling engines are attracting world attention. Free piston Stirling engines could be applied to the solar dish system, micro-CHP system and so on. The development of a free piston Stirling engine is discussed in this paper. The ideal adiabatic model is used in the preliminary design of the free piston Stirling engine. The key parameters of the designed engine and the thermodynamic analysis are described in detail. Then the performance of the engine is obtained.

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Ferral-Smith, Hayden, Georgia Giannakakis, Joshua Wilson, and Joshua Taylor. "Factors Influencing the Thermodynamic Efficiency of Stirling Engines." PAM Review Energy Science & Technology 4 (June 5, 2017): 17–29. http://dx.doi.org/10.5130/pamr.v4i0.1459.

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This meta-study examines the factors which contribute to Stirling engine efficiency. Working fluids should have high specific heat capacity, low viscosity and low density making noble gases the most suitable. Each different working fluid has its own optimum power output at varying pressures and temperatures. The best being Helium at 4.14 MPa and 922K. Dead volume also affects the power output of Stirling engines. Theoretical engines with zero dead volume are ideal but dead volume can occupy over 50% of the engine. Engine configuration also impacts on the efficiency of a Stirling engine. The la

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Brzeski, L., and Z. Kazimierski. "A New Concept of Externally Heated Engine—Comparisons with the Stirling Engine." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 210, no. 5 (1996): 363–71. http://dx.doi.org/10.1243/pime_proc_1996_210_060_02.

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This paper presents a new concept of the externally heated valve (EHV) engine. Air can be used as a working medium in the closed cycle of this engine. Heat delivered to the working air can come from a combustion chamber or another heat generator of an arbitrary type. The engine construction and the thermodynamic cycle performed by it are original and entirely different from the well-known Stirling engine. The main disadvantage of the Stirling engine is its low power density, that is the low power obtained per litre of the engine cylinder volume. In the case of the engine presented here it is p

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A., Armaan, and Srinivas G. "In Tune with Times: Recent Developments in Theoretical, Experimental and Numerical techniques of Aircraft Engines." International Journal of Engineering & Technology 7, no. 2 (2018): 805. http://dx.doi.org/10.14419/ijet.v7i2.10910.

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Today the aircraft engine designing and development work is increasing drastically. Especially aircraft engines play a vital role in order to decide the aircrafts speed and its performance. Broadly turbojet, turboprop, turbo shaft and turbofan engines comes under the category of air breathing engines. Every engine has its own purpose and application. But modern aircrafts require much more advancements. Designing a new aircraft engine has been a really challenging task to the researchers. But giving a complete holistic view of aircraft engines and research gap would definitely help a lot to the

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Accardo, Antonella, Trentalessandro Costantino, Gianfranco Malagrinò, Michele Pensato, and Ezio Spessa. "Greenhouse Gas Emissions of a Hydrogen Engine for Automotive Application through Life-Cycle Assessment." Energies 17, no. 11 (2024): 2571. http://dx.doi.org/10.3390/en17112571.

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Hydrogen combustion engine vehicles have the potential to rapidly enter the market and reduce greenhouse gas emissions (GHG) compared to conventional engines. The ability to provide a rapid market deployment is linked to the fact that the industry would take advantage of the existing internal combustion engine production chain. The aim of this paper is twofold. First, it aims to develop a methodology for applying life-cycle assessment (LCA) to internal combustion engines to estimate their life-cycle GHG emissions. Also, it aims to investigate the decarbonization potential of hydrogen engines p

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A., F. Golovchuk, and V. Prikhodko K. "Free-piston engine-and-hydraulic pump for railway vehicles." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 2(44) (April 25, 2013): 49–55. https://doi.org/10.15802/stp2013/13004.

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<strong>Purpose. </strong>The development of the free-piston diesel engine-and-hydraulic pump for the continuously variable hydrostatical transmission of mobile power vehicles. <strong>Methodology.</strong> For a long time engine builders have been interesting in the problem of developing free piston engines, which have much bigger coefficient of efficiency (40…80%). Such engines don’t have the conversion of reciprocating motion for inner combustion engine piston into rotating motion of crankshaft, from which the engine torque is transferred to the power machine tra

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Wu, Luyang. "Analysis of Principle and Applications for Different Engines." Applied and Computational Engineering 98, no. 1 (2024): 175–80. http://dx.doi.org/10.54254/2755-2721/98/2024fmceau0109.

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Abstract. As a matter of fact, engines have been widely adopted and implemented in contemporary society, which has become one of the inevitable tools for human beings daily life in recent years. Nowadays, with the jet engines is extensively used on various aircraft, each type of engines has diversely functions in using. Therefore, with this in mind, the topic of this paper is to compare the different engines and their current use in the market. This research methods of this paper are as follow. Firstly, the data used by each engine are collected; secondly, the design sketch of each engine is s

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Khoir, Kana Taufiq, Muh Anis Mustaghfirin, and Munir Muradi. "Cooling Design Analysis of The Use of Land Engine On Ship." IOP Conference Series: Earth and Environmental Science 1265, no. 1 (2023): 012022. http://dx.doi.org/10.1088/1755-1315/1265/1/012022.

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Abstract Based on the survey, the majority of fishermen in Indonesia choose to use land engines as propulsion for the main engine and auxiliary engine on ships because in terms of the price of land engines, they are much cheaper than ship engines produced by marine engine factories. Therefore, not a few workshops that often serve land engine modifications for further use as ship propulsion. Regulations regarding the use of land engines as ship’s main engines in Indonesia are currently not widely regulated in the Classification Agency regulations. Heat exchanger that supports the cooling system

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OPALIŃSKI, Marcin, Andrzej TEODORCZYK, and Jakub KALKE. "The closed-cycle model numerical analysis of the impact of crank mechanism design on engine efficiency." Combustion Engines 168, no. 1 (2017): 153–60. http://dx.doi.org/10.19206/ce-2017-125.

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The research presents a review and comparison of different engine constructions. Investigated engines included crankshaft engines, barrel engine, opposed-piston engines and theoretical models to present possible variations of piston motion curves. The work comprises also detailed description of a numerical piston engine model which was created to determine the impact of the cycle parameters including described different piston motion curves on the engine efficiency. Developed model was equipped with Wiebe function to reflect a heat release during combustion event and Woschini’s correlation to

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Chen, G., P. L. Flynn, S. M. Gallagher, and E. R. Dillen. "Development of the Low-Emission GE-7FDL High-Power Medium-Speed Locomotive Diesel Engine." Journal of Engineering for Gas Turbines and Power 125, no. 2 (2003): 505–12. http://dx.doi.org/10.1115/1.1563241.

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This paper summarizes the technical development of the low-emission GE-7FDL series locomotive diesel engine. The development focused on reducing the engine exhaust NOx emission significantly while reducing and curbing other visible and nonvisible emissions with minimal adverse impact on the engine fuel efficiency and minimal changes to the engine system and components. Concepts were analyzed, and were investigated using a single-cylinder 7FDL research engine. A low-emission 16-cylinder 7FDL engine and a GE locomotive prototype were built and tested for performance demonstration, function evalu

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Teng, Fei. "A brief introduction to the typical fuels for SI engine and its future projections." Journal of Physics: Conference Series 2419, no. 1 (2023): 012067. http://dx.doi.org/10.1088/1742-6596/2419/1/012067.

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Abstract Spark Ignition (SI) engine has been widely used and developed in the engineering field due to its high performance and safety. At present, the SI engine has received extensive attention from many experts and scholars and has become a research hotspot and focus in the field of heat engines. This paper studies the development status of SI engines from multiple perspectives. The research status of performance and pollutant emissions of commercial SI engines were analyzed by literature search. The numerical simulation principle and application method of the current SI engine were studied,

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WINKLHOFER, Ernst, and Wolfgang HOPFNER. "Optical single cylinder engines in engine research and development." Combustion Engines 152, no. 1 (2013): 71–78. http://dx.doi.org/10.19206/ce-117014.

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We report on essential design elements of optically accessed research engines and describe selected examples of their applications in engine development. Whereas research topics most often address specific generic topics and are focused on comprehensive analysis of selected engine phenomena, the priority in using optical engines for engine development tasks is in providing data relevant for the operation of a normal multicylinder engine. In this latter case, optical engines are only used if their results have such high value that they justify the efforts required to achieve the outcome. Both,

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Garwol, Arkadiusz. "Jet engine - construction and modern development examples." Technologia i Automatyzacja Montażu 125, no. 3 (2024): 38–43. http://dx.doi.org/10.7862/tiam.2024.3.5.

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The article presents the construction and operating principle of a turbine jet engine. The basic types of engines of this type are presented, such as single-rotor single-flow jet engines, single-flow dual-rotor engines (which are another development version of single-rotor engines, as well as dual-flow engines which are currently most commonly used in passenger aviation, and contra-rotating propeller engines and turbine propeller engines. Also presented their applications, such as propulsion of various types of. In the further part of this paper, the development trends of turbine jet engines a

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Gettel, L. E., G. C. Perry, J. Boisvert, and P. J. O’Sullivan. "Dual Fuel Engine Control Systems for Transportation Applications." Journal of Engineering for Gas Turbines and Power 109, no. 4 (1987): 435–38. http://dx.doi.org/10.1115/1.3240059.

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Microprocessor control systems have been developed for dual fuel diesel engines intended for transportation applications. Control system requirements for transportation engines are more demanding than for stationary engines, as the system must be able to cope with variable speed and load. Detailed fuel maps were determined for both normally aspirated and turbocharged diesel engines based on the criterion that the engine did not operate in the regimes where knock or incomplete combustion occurred. The control system was developed so that the engine would follow the detailed fuel map. The input

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Rommelaere, Tim Philippe, Michael Klaas, and Wolfgang Schröder. "Comparison Of A Molecularly-Controlled Combustion Engine To A DISI Engine." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–10. http://dx.doi.org/10.55037/lxlaser.21st.32.

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In addition to the increased use of electromobility, significant improvements in the efficiency of internal combustion engines (ICE) to achieve a considerable reduction of emissions is crucial to advance the transition towards a sustainable transport sector. One approach to increase the efficiency of combustion engines is active pre-chamber ignited engines (Molecularly Controlled Combustion Engines, MCC). The traditional spark ignition is replaced by a chamber that ignites a secondary fuel. The burning fuel is emitted from the pre-chamber via multiple holes, igniting the fuel air mixture in th

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Hanifuddin, Hanifuddin, Milda Fibria, Catur Y. Respatiningsih, Setyo Widodo, and Maymuchar Maymuchar. "The Evaluation of Lubricants Performances in Light- and Heavy-Duty Diesel Engines in The Application of Biodiesel (B20)." Scientific Contributions Oil and Gas 43, no. 2 (2020): 81–90. http://dx.doi.org/10.29017/scog.43.2.523.

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The use of biodiesel as fuel in light- and heavy-diesel engine vehicles in general will negatively affects the lubricant performance. the changes in lubricants properties during the use of B20 were investigated. Two type of vehicles engines were used, namely heavy duty and light duty diesel engines. The road test wascarried out until 40,000 km, while the lubricant was drained and analysed only for 10,000 km of distances. The laboratory test was conducted to observe both fresh and used lubricants. The results show that the biodiesel dilutions were less than 2% both in light- and heavy-duty dies

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Fu, Yinlong, Erhan Hu, and Zongxian Xia. "HCCI technology using hydrogen energy and artificial intelligence." Applied and Computational Engineering 11, no. 1 (2023): 167–73. http://dx.doi.org/10.54254/2755-2721/11/20230226.

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The principle of a HCCI engine is to inject a mixture of fuel and air into the cylinder and allow it to self-ignite under a high compression ratio. Unlike traditional gasoline and diesel engines, the mixture in the HCCI engine is homogeneous and does not require an ignition system to ignite it. The air-fuel mixture in the cylinder is burned completely by compressing. It makes effective use of fuel. The structure is simpler than a conventional internal combustion engine. HCCI engine has a huge application prospect in many fields. Among them, the automobile is one of the biggest parts. However,

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Ma, Ruide. "Comparative Analysis of Traditional and Alternative Engines: Advancements and Impacts on Sustainability." Highlights in Science, Engineering and Technology 119 (December 11, 2024): 44–49. https://doi.org/10.54097/kvga6d04.

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Traditional internal combustion engines (ICEs) have accompanied humans for a long time and have developed to contain good performance and high reliability. However, the emissions of traditional engines play a big role in environmental pollution, which goes against the most important tenet of human development—sustainable development. To radically deal with this concern, alternative engines have been invented and developed these years instead of further study of traditional engines. Alternative engines, including hybrid, fuel cell, and electric engines, are designed to convert energies from ren

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Salama, Ramiz, and Mohamed Elsayed. "A live comparison between Unity and Unreal game engines." Global Journal of Information Technology: Emerging Technologies 11, no. 1 (2021): 01–07. http://dx.doi.org/10.18844/gjit.v11i1.5288.

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A game engine is an ongoing thread that helps us in making and designing beautiful games with the simplest methods and least resources. Game engines support a wide variety of playing platforms that can translate the game designed into a playable game in different platforms like PlayStation, PC, Xbox, Android, IOS and Nintendo. There is a wide variety of game engines that suits every programmer and designer working on engines such as Unity game engine, Unreal game engine and construct game engine. In order to make a game one has to learn how to code in one of these engines. From our results, Un

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MINASYAN, Vladimir. "Search Engine Friendliness of Search Engine Marketing Methods." Journal of Business 3, no. 1 (2014): 47–51. http://dx.doi.org/10.31578/job.v3i1.80.

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The article examines search engine friendliness of the most popular and widely used search engine marketing (SEM) methods. In the first part, SEM methods and approaches that are in line with search engines’ official guidelines are examined and analyzed. The second part deals with popular methods which are not welcomed by search engines and are implemented by companies solely for search engine rankings manipulation purposes. Finally, the last section describes several experiments conducted on live websites in order to figure out modern search engines abilities to identify widely used deceptive

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Hong, Eonpyo, Kang-A. Choi, and Jhihoon Joo. "Efficient Two-Stage Max-Pooling Engines for an FPGA-Based Convolutional Neural Network." Electronics 12, no. 19 (2023): 4043. http://dx.doi.org/10.3390/electronics12194043.

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This paper proposes two max-pooling engines, named the RTB-MAXP engine and the CMB-MAXP engine, with a scalable window size parameter for FPGA-based convolutional neural network (CNN) implementation. The max-pooling operation for the CNN can be decomposed into two stages, i.e., a horizontal axis max-pooling operation and a vertical axis max-pooling operation. These two one-dimensional max-pooling operations are performed by tracking the rank of the values within the window in the RTB-MAXP engine and cascading the maximum operations of the values in the CMB-MAXP engine. Both the RTB-MAXP engine

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Kazienko, Damian, and Leszek Chybowski. "Instantaneous Rotational Speed Algorithm for Locating Malfunctions in Marine Diesel Engines." Energies 13, no. 6 (2020): 1396. http://dx.doi.org/10.3390/en13061396.

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This article suggested broadening the standard methods for diagnosing the technical condition of diesel engines to include an analysis of the instantaneous rotational speed of compression combustion engines with the use of a novel algorithm. The authors revised the subject concerning the use of the analysis of instantaneous changes in the rotational speed of an engine when assessing its technical condition and the location of the malfunction. An algorithm and its practical implementation in a prototype diagnostic system called SpeedMA were presented. This article reported the test results of t

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