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Three-cylinder engines for small passenger cars
Nárovec, Jiří ; Kaplan, Zdeněk (referee) ; Píštěk, Václav (advisor)
The aim of this bachelor’s thesis is to gather information about three-cylinder combustion engines used in small passenger cars nowadays. The thesis is conceived as a search of available electronic sources, company literature and specialized journal articles and involves fundamental technical-economic parameters of 15 selected types of three-cylinder engines. It contains the comparison of three-cylinder gasoline engines using the method of decision analysis and the prognosis of future development and application of such engine unit concept in small passenger cars.
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Development of combustion engine turbochargers
Franc, Vladimír ; Dlugoš, Jozef (referee) ; Řehák, Kamil (advisor)
This bachelor's thesis is a research project focused on the development of turbocharger technology for diesel and gasoline engines. The work is divided into four chapters. The first chapter is a general description of the construction, basic principles and key components of turbochargers. Next, the history of turbocharging will be briefly summarized. The third chapter is devoted to particular construction methods and finally new development trends will be discussed too.
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Present Trends is Power Increasing of CI and SI Engines
Slovák, Jan ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
This bachelor thesis is only the search character. In this thesis are described different types of engines, also are discussed the most common types of supercharging engines – by compressor and turbocharger. Along with them are showed less known methods of supercharging. At next chapter, thesis describes another possible methods of increasing of engine power like chiptuning etc. Last chapter is about near future and describes for example engine downsizing and hybrid cars.
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Simulation modelling of VNT mechanism kinematics
Zelda, Jan ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
This thesis deals with the modeling of kinematics VNT Turbocharger mechanism. In the first part, there is a general overview of supercharging combustion engines, search optimization methods and overview of the types of simulation models. Creating a simulation model and performing sensitivity analysis of each part follows. The final part of the thesis reflects the impact of clearance in the joins of the mechanism.
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Up-to-date Methods of Charging Processes
Górnisiewicz, Tomáš ; Janoušek, Michal (referee) ; Dundálek, Radim (advisor)
This thesis deals with up-to-date methods of charging processes used in combustion engines of contemporary cars. Major emphasis is put on turbocharged petrol engines. Principles of charging process are explained as well as the most common and extraordinary ways of charging process. Following chapter contains summary of present-day turbocharged and supercharged engines. Final part describes turbocharger failures. Turbo-charging represents an elementary way to increase engine power and allows designing high efficient engines of small dimensions.
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Passenger Vehicles Drive Unit Recent Development
Sedlář, Martin ; Svída, David (referee) ; Beran, Martin (advisor)
This bachelor’s thesis is an overview of modern drive units trends. The first part of this thesis demonstrates combusting engines sorting; the next main part is an overview of a few drive units which are characteristic for their categories. There is a comparison of two lower power class engine representatives and two higher power class representatives in final chapter. The conclusion summarizes described topic and expresses own opinion.
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Increasing the efficiency of modern internal combustion engines
Kuzmin, Aleksei ; Böhm, Michael (referee) ; Beran, Martin (advisor)
This bachelor's thesis deals with the issue of increasing the efficiency of internal combustion engines, which is of significant importance nowadays due to the popularity of personal cars. The given problem is closely related to the reduction of fuel consumption during the operation of the above-mentioned machines and the great pressure of emission standards. The global climate change of our planet and the great impact on human health caused by the amount of harmful emissions of exhaust gases, which are motivations for further research in the given area. For solving a specific issue was chosen a research method, which consists of using quality information sources and professional scientific articles. The basic procedures in the elaboration of this bachelor's thesis have the following character: a brief historical overview of the development of internal combustion engines, theory in the context of the issue and definition of the necessary quantities, comparison according to basic parameters (efficiency, principle of work, emissions, specific effective fuel consumption) of three current methods of solution (millerization, Atkinson cycle, variable compression ratio), discussion of achieved results, drawing of important conclusions. The conclusion of the thesis is the evaluation of the advantages and disadvantages of the chosen solutions to the given problem, the potential of using and the assumption of the future of internal combustion engines.
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Development of combustion engine turbochargers
Franc, Vladimír ; Dlugoš, Jozef (referee) ; Řehák, Kamil (advisor)
This bachelor's thesis is a research project focused on the development of turbocharger technology for diesel and gasoline engines. The work is divided into four chapters. The first chapter is a general description of the construction, basic principles and key components of turbochargers. Next, the history of turbocharging will be briefly summarized. The third chapter is devoted to particular construction methods and finally new development trends will be discussed too.
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Up-to-date Methods of Charging Processes
Górnisiewicz, Tomáš ; Janoušek, Michal (referee) ; Dundálek, Radim (advisor)
This thesis deals with up-to-date methods of charging processes used in combustion engines of contemporary cars. Major emphasis is put on turbocharged petrol engines. Principles of charging process are explained as well as the most common and extraordinary ways of charging process. Following chapter contains summary of present-day turbocharged and supercharged engines. Final part describes turbocharger failures. Turbo-charging represents an elementary way to increase engine power and allows designing high efficient engines of small dimensions.
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