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Author: search.filters.author.Čerňan, JozefEnd date: 2022

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    Design and implementation of the aerobatic fuel system of the M60 engine
    (University of Žilina, 2022) Horák, Tomáš; Čerňan, Jozef
    The paper deals with the specific modification of the M60 two-stroke engine so that the engine can be used in aerobatic conditions. In the introduction of the paper, the basic theory concerning piston two-stroke engines, the principle of operation of this engine, and the analysis of individual fuel systems is first discussed, with a focus on fuel injection systems and their components. Furthermore, the preparation of the fuel mixture is characterized together with the factors affecting it and also the basic characteristics of the engine control unit. In this way, the reader will gain the knowledge necessary for a better understanding of the following chapters. The motivation is to find a way to modify the non-aerobatic engine for the needs of aerobatic flight, and this modification includes a number of important advantages over the original fuel system design mentioned in the paper. At the core of the paper, we discuss the design of the fuel system, including important modifications, and also the practical implementation of this fuel system on the engine mentioned above. At the end of the paper, we evaluate the results of the work achieved by changing and modifying the fuel system on the M60 engine, including the achievement of the set objectives.
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    Design and implementation of equipment for partial use of combustion engine exhaust energy
    (University of Zilina, 2022) Szarowski, Alec; Čerňan, Jozef
    The content of the diploma thesis was the design and implementation of equipment for the partial use of exhaust gas energy of the internal combustion engine and the possibilities of using this equipment in internal combustion engines. The aim of this work is to design a scheme and 3D model of the converter for energy recovery from exhaust gases based on magnetohydrodynamics, and also to provide scientific information and inform the reader as much as possible about the theory of magnetohydrodynamics and the use of these theories in energy recovery. The work provides scientific information in the field of hydrodynamics, magnetohydrodynamics of engines and emissions and in the practical part is designed and built magnetohydrodynamic converter which was one of the main objectives of this work together with key information from the researched area and their application to the converter.
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    Innovation options for selected systems of M60 engine: exhaust system and engine cooling
    (University of Zilina, 2022) Lapínová, Branislava; Čerňan, Jozef
    Our article deals with the design and construction of a resonant exhaust system and cooling system for the M60 engine. In introductory part, the article provides the reader with a final overview of two-stroke. In the next chapter, the focus is only on the resonant exhaust system. The article of the reader informs about the basic principles of resonant exhaust systems and points out their fundamental effect on power, torque and fuel consumption. Subsequently, the article gets to the calculation of the resonant exhaust system and its execution. The final chapter deals with the cooling system and solves the design optimization of the shape of deflectors. Both in the previous chapter and in this chapter, it first deals with theoretical knowledge, design and subseguent production of deflectors.
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    Innovation options for selected M60 engine systems: ignition system and engine parameter monitoring
    (University of Zilina, 2022) Suchanovský, Matúš; Čerňan, Jozef
    The topic of this paper is the possibility of innovating the ignition system of the M60 engine. The main part is the practical solution of the assignment. It shows the condition of the original ignition system, which was innovated in this work. It was a contact ignition system with a fixed advance, using a system of hammers. This solution was replaced by a new type of ignition, specifically an electronic ignition system that allows to change the ignition advance depending on the engine speed and load. The main parts of the new system consist of a control unit and a Hall sensor. It is these two components that make the main difference compared to the original ignition system. We deal with a more detailed description of design, construction and installation in the practical part. We paid attention to the design, the wiring diagram and its installation. At this stage, we addressed the possibilities of fastening a Hall sensor. The use of old components for assembly was not possible, so we proceeded to the design and production of new ones. The innovative ignition system will allow the engine to achieve higher power, lower consumption and the proportion of pollutants in the exhaust gases.
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    Construction design of a three-cylinder two-stroke radial engine
    (University of Zilina, 2022) Lubják, Peter; Čerňan, Jozef
    The goal of modern society is to improve efficiency in all areas. Our goal is to convert the old engine parts into a functional power unit that is more efficient than the donor parts. Modern electric motors with high efficiency are our main competitors, but our motor has an advantage in a simple design that is easily serviced. We achieve low weight by using lightweight aluminum air-cooled cylinders. In my work, I deal with the fundamentals of two- and four-stroke internal combustion engines. The importance of primary and secondary forces caused by the movement of the crankshaft and pistons is also discussed. Of course, we'll go over how to fill the engine while it's running (carburetor/injection). Following that, I'd like to go over the overall functionality of the drive unit as well as the significance of specific components. In practice, we concentrate on simulating our experimental engine. The purpose of this entire article is to provide the foundational documentation for the subsequent construction of this power unit.
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    Wing magnetohydrodynamic facility of aircraft propulsion system
    (University of Zilina, 2021) Miča, Pavol; Čerňan, Jozef
    Magnetohydrodynamics is one of the relatively new fields of physics studying the dynamics of magnetic fields in electrically conductive fluids. The implementation using magnetohydrodynamic principles applied to aircraft propulsion systems is so far only in a range of experiments. So far, real applications have occurred only a few times and always only at the level of experiments and prototypes. In my paper, I deal with the application of a magnetohydrodynamic device built into the wing of an airplane. This means should work as a secondary type of drive in cooperation with the primary drive, which is represented by a turbofan motor. The device´s main function is to reduce the fuel requirements of the primary drive and reduce noise and other harmful emissions. The work also includes drawings created in the program AutoCAD, where I designed the location and implementation of a wing magnetohydrodynamic device in the wing of general construction. In this work, I also explore the advantages and disadvantages of using different tips of the primary drive. I am also researching the current state of the problem where I am analyzing the Japanese project of the YAMATO-1 semi-catamaran with magnetohydronymous propulsion and a prototype of an ion-powered crawler from IMT scientists. I also examine in detail all the theoretical knowledge concerning magnetohydrodynamics and wing design. Finally, I compare the advantages and disadvantages of using this tool as well as other technical issues related to construction. This work can serve as a basis for further future research into the application of magnetohydrodynamic principles in aviation
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    Design optimization of a compressor stage with counter-rotating rotors
    (University of Zilina, 2021) Šajbanová, Kristína; Čerňan, Jozef
    The paper deals with the design optimization of the compressor stage with counter-rotating rotors, especially in order to create a model which, due to its parameters in real operation, would achieve the maximum possible values of efficiency. The primary goal of this work is to create a design of a compressor stage with counter-rotating rotors from a theoretical point of view. The compressor stage model is created using Inventor modelling software and the subsequent design evaluation and optimization is based on airflow analysis of the compressor stage using Ansys Discovery Live software. The secondary goal is to point out the existence and application of innovative and progressive technology of rapid prototyping in the world of aircraft component production and at the same time to emphasize its benefits in comparison with conventional production techniques applied in the initial stages of aircraft component production.
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    Design of a bladeless engine compressor based on magnetohydrodynamics
    (University of Zilina, 2021) Stachová, Jana; Čerňan, Jozef
    This article is a technical analysis focusing on the design of a bladeless compressor based on magnetohydrodynamics and the possibilities of its use. The aim of this work is to design new solutions in the field of aircraft compressors and to provide a comprehensive overview of scientific information on the topic. Emphasis is also placed on acquainting the reader with the basic principles of magnetohydrodynamics and the possibilities of its application in the field of aircraft propulsion units. The work is a combination of professional research of scientific information in the field of plasma and magnetohydrodynamics and a practical part whose goal is to create new design of a bladeless compressor using scientific observation and modelling methods. This design was also examined in the work using the method of comparison, which aimed to examine the design and its behaviour in different configurations. The main goal was to combine essential and key information from the researched area and apply it in a completely new way in designing new solutions in issued area
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    Possible modifications of the automobile piston petrol engine for aircraft propulsion: cooling, starting and ignition system
    (University of Zilina, 2021) Malíková, Zuzana; Čerňan, Jozef
    The main goal of our work was to design a possible modification of the automobile piston petrol engine for aircraft propulsion and subsequently its implementation. The paper can be divided into four main units. The first part is aimed on the history and development of automobile and aircraft piston engines. We focused on their construction and gradual improvement of performance. The second unit is dedicated to theoretical knowledge of the cooling, starting and ignition systems. In the cooling system, we mainly described air cooling and the required components needed for that process. In the starting system, we paid attention to the necessity of starting gears, their types and uses. We described mainly electric starters and then we attached a diagram of the starting system. In the ignition system, we described the structural elements required for the process of igniting a mixture of fuel and air. In the following section, we described the engine used for aeroconversion, its parameters and the reason for its selection. In the last part we deal with the practical part of the paper. We created the component models needed for the complete construction of these systems, which were created in the computer program Autodesk Inventor Professional 2021. We prepared the cooling system for more efficient air cooling by adding deflectors, in the starting system we used a starter with a reducer to increase torque and reduce fuel consumption and in the ignition system, we proposed a modification of the flywheel made of dural material, which would reduce the overall weight of the engine. The result of our work is a finished design for aeroconversion of a flat four-cylinder engine. The modified engine is suitable for ultralight aircraft.
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    Modification possibilities of automotive power plant for aviation purposes: fuel system and turbocharger system
    (University of Zilina, 2021) Pukač, Andrej; Čerňan, Jozef
    The objective of this article is to develop and demonstrate modification of automotive engine for aviation purposes. Automotive engine in aircraft has its pros and cons, but It can be good economical alternative to power plants such as Rotax engines which can be expensive, especially in Ultralight category where the rules of certification are different than for CS-LSA or CS-23 category aircraft. In first part I analyse actual state of real engine and describe operational problems, which shall be improved for better operation in aircraft. In second part I demonstrate practical solutions of turbocharger system and fuel system. In these systems I tried to use the most modern technologies which however will be reliable enough for aviation use, where the safety is priority number one.