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Increasing SI Racing Engine Performance by Turbocharging
Dolák, Jindřich ; Beran, Martin (referee) ; Svída, David (advisor)
Aim of this diploma thesis is the turbocharger design calculation for single cylinder SI engine for Formula Student. This thesis includes a mathematical model of the engine, which is created in the Lotus Engine Simulation. This model applies for tuning the regulation of turbocharger charging pressure. Lotus uses the turbine waste gate valve for this regulation. The results of the simulation are the charging pressure,lengths of the intake manifold and etc. These parameters ensure the optimal engine qualities. The knowlege and results of the simulations are summarized at the conclusion.
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Modification of Naturally Aspirated Engine to Turbocharged Engine
Fajkus, Martin ; Beran, Martin (referee) ; Svída, David (advisor)
Aim of this diploma thesis is the modification of naturally aspirated engine for Formula Student competition to turbocharged version. Modification which were made are based on the issue knowledge and calculations. The input data were obtained from 3D scanning and measurements, at the school laboratories. All 3D models were created in Pro / Engineer. Input data for the computional analysis was developed in Lotus Engine Simulation. Computational analysis was performed in ANSYS by finite element method. Calculations had to simulate a piston behavior at the critical situations where the engine is under the maxiumum load.
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Modern Turbocharger Rotor Supports
Kortán, Daniel ; Raffai, Peter (referee) ; Knotek, Jiří (advisor)
This bachelor thesis focuses on the options of impositions of turbocharger rotors. The first part focuses on the construction of turbochargers and description of the principle of turbocharging engines with internal combustion. The second part focuses on the description of the construction of rolling and sliding bearings and explanation of options the particular types of impositions used in turbochargers nowadays.
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Modern Trends in Turbocharging
Sůkal, Jan ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
This bachelor’s thesis deals with modern methods of internal combustion engine turbocharging. The reader is acquainted with basic principles of charging and motivation of its introduction into automotive industry. First part describes in detail design of turbocharger components with emphasis on modern development. In next chapter are mentioned the most common ways of boost control. Final part is focused on combined and multistage turbocharging systems as well as upcoming electric turbocharging technology.
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Methods for measuring exhaust gas temperature before turbocharger
Vajdák, Martin ; Jaroš, Michal (referee) ; Štětina, Josef (advisor)
This bachelor´s thesis deals with the measurement of exhaust gas temperature before turbocharger in Honeywell laboratories. In the introduction of thesis the general methods of turbocharging are described. The following sections deals with the temperature measurement generally, issues of insertion thermocouples in measuring section and their connection. Another part is devoted inaccuracies, which may occur during the measurement, and also ways of their elimination. The main part of the thesis consists of sixth chapter in which major, but also smaller influences, are analyzed in details and cleared up with examples, because this influences are the source of inaccuracies during the temperature measurements. These influences are especially different wall temperature of measuring section and the flowing exhaust gases and influence of thermocouple emissivity change over the time.
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Methods of reducing the consumption of modern vehicles
Kubeš, Filip ; Pech, Ondřej (referee) ; Štětina, Josef (advisor)
This thesis summarizes the basic knowledge of thermodynamics of internal combustion engines. Emphasis was put on engine efficiency and engine cycles, described by theoretical and indicator diagrams. It also introduces classification of engine efficiencies, and their respective definitions. The next section focuses on some systems used in modern vehicles, that improves engine efficiency and reduces fuel consumption. Moreover it includes conceptual solutions, that are in preparation for mass production. The last part of this thesis concentrates on economical driving techniques, and reduction of driving resistance. In conclusion, the thesis shows the direction of next development of automobiles.
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Turbocharging of combustion engines
Kadleček, Jiří ; Beran, Martin (referee) ; Vančura, Jan (advisor)
This bachelor thesis presents the construction and function of the main types of mechanic turbocharging systems. Furthermore, it contains the analysis of regulating elements and the last chapter involves also the description of the newest trends in the field of turbocharging.
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Ideal cycle turbocharged internal combustion engines
Hrubý, Jakub ; Jedelský, Jan (referee) ; Štětina, Josef (advisor)
The aim of this thesis is description of various charging methods as a one of the most attainable form of ramping up the power and fuel consumption efficiency of naturally aspirated engines nowadays. Main aspect is thermodynamic part of the whole problem, especially the comparison of thermal efficiencies between different cycles. After a short history brief, main reasons why is charging so important are answered. General description, work principles, advantages and disadvantages of new technologies are also included. Emphasis is aimed at topicality and graphic interpretation. Thesis is dealing with charging diesel engines, but also petrol engines in automotive industry and offering a possible way of future development.
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Piston for 225 kW 4-stroke SI-engine
Bauza, Erik ; Dundálek, Radim (referee) ; Svída, David (advisor)
Contents of this work is processing of computational suggestion and construction solution of piston for four- stroke SI turbocharged piston with power of 225 kW. This work is point to suggestion of basic dimension of engine, crankshaft mechanism and basic dimensions of piston. Designed piston is controled in critical sections. In this work is also shortly describe last tendency on development and construction of pistons, also a shortly describe of single components of designed engine.
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