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Exhaust Temperature Stabilitation Systems for Turbocharged Engines
Böhm, Michael ; Charvát, Pavel (referee) ; Vondrák, Adam (referee) ; Štětina, Josef (advisor)
This paper describes the possibilities of reducing temperature pulsations in the exhaust manifold of an internal combustion engine. For this purpose, the concept of a heat reservoir with a phase change material that can store the heat generated in the exhaust manifold is chosen. At a temperature lower than the phase change temperature of this material, the heat storage is then able to transfer the heat back to the exhaust gas, thereby reducing the temperature pulsations. The actual design consists of an advanced heat storage design consisting of an assembly of smaller tubes that increase the heat output of the storage while causing minimal pressure drop in the exhaust manifold. This concept is validated and compared with a series engine without a stack through simulations in both 1D and 3D computing environments. The designed and constructed prototype stack is subjected to experimental testing to confirm its performance. The effects of the electrically assisted turbocharger on the exhaust gas temperature are also analyzed. Finally, all the results are summarized showing the overall potential of this system and a possible way forward in the development of these stacks with phase change materials is outlined.
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Design of Calculation Method for Electrically Assisted Turbochargers
Staněk, Lukáš ; Beran, Martin (referee) ; Svída, David (advisor)
The Diploma thesis deals with the testing of electrically assisted turbochargers. Aim of this work is to apply the established way of the performance testing of conventional turbochargers for electrically assisted turbocharger. Part of this work is to create a program for the calculation of the observed characteristics of the turbocharger. The program is extended to the characteristics of the generator for electrically assisted turbocharger. The program will serve as a basic for control the data for tested motorsport applications.
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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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Design of Calculation Method for Electrically Assisted Turbochargers
Staněk, Lukáš ; Beran, Martin (referee) ; Svída, David (advisor)
The Diploma thesis deals with the testing of electrically assisted turbochargers. Aim of this work is to apply the established way of the performance testing of conventional turbochargers for electrically assisted turbocharger. Part of this work is to create a program for the calculation of the observed characteristics of the turbocharger. The program is extended to the characteristics of the generator for electrically assisted turbocharger. The program will serve as a basic for control the data for tested motorsport applications.
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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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