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The introduction of unleaded fuels in aviation
Pilíšek, Lukáš ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
This bachelor thesis deals with fuels for air piston engine. The thesis is divided into two main parts. The first chapter describes problems of current lead fuels and influence of tetraethyllead on the octane number. The second chapter is dedicated to the development of unleaded fuels including factors which are limiting theirs introduction to the market.
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Modification of a motorcycle spark ignition engine
Poulíček, Matěj ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
This diploma thesis is about possible modifications of four-stroke motorcycle petrol engines for increasing power. It also deals with the modification of the Aprilia Leonardo 250 engine from a 2-valve variant to a 4-valve variant, the simulation of this engine and the proposed solution in the GT SUITE. Attention is also paid to the strength control of the crank mechanism of the engine.
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Knock detection and analysis
Melichárek, Patrik ; Svída, David (referee) ; Beran, Martin (advisor)
This thesis focuses on knocking combustion. First part of this thesis focuses on recherche of this topic, where is a brief comparison of normal and knocking combustion, introduction of factors that have impact on occurrence of knocking and discusses methods of knocking detection. It is followed by description of negative effects of knocking combustion and modern methods of its prevention. Second part consists of measurements to prove credibility of theoretical basis of the topic.
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Alternative fuel for internal combustion engines for commercial vehicles
Snášel, Pavel ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
The liquid petroleum fuels, gasoline and diesel, have gradually enforced during the development of thermal machines. Because these fuels are non-renewable and their usage is joined with many ecological and economical problems, we face the task how to replace these dominating fuels. The purpose of this thesis is to summarize and compare the properties of alternative fuels, especially their heating value, and sketch the supposed progress of their usage in transportation.
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Modification of a motorcycle spark ignition engine
Poulíček, Matěj ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
This diploma thesis is about possible modifications of four-stroke motorcycle petrol engines for increasing power. It also deals with the modification of the Aprilia Leonardo 250 engine from a 2-valve variant to a 4-valve variant, the simulation of this engine and the proposed solution in the GT SUITE. Attention is also paid to the strength control of the crank mechanism of the engine.
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|
|
Knock detection and analysis
Melichárek, Patrik ; Svída, David (referee) ; Beran, Martin (advisor)
This thesis focuses on knocking combustion. First part of this thesis focuses on recherche of this topic, where is a brief comparison of normal and knocking combustion, introduction of factors that have impact on occurrence of knocking and discusses methods of knocking detection. It is followed by description of negative effects of knocking combustion and modern methods of its prevention. Second part consists of measurements to prove credibility of theoretical basis of the topic.
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Analýza změn parametrů zážehového motoru při změně oktanového čísla paliva
Puchnar, Lukáš
Diploma thesis focuses on fuel for spark-ignition engines and their operational cha-racteristics. First chapters of the thesis focus on requirements of these fuels and their production, followed by details analysis of the octane number, ways of measuring it and demands towards the octane number for usage in modern petrol engines. Next part describes individual fuel types used to run spark-ignition engines and their pros and cons. Analysis of exhaust emission particles produced during fuel combustion and it's regulation is covered in the next part. Final chapter provides a comparison of the in-fluence, octane number of the fuel has on the vehicle performance, based on data mea-sured in certified rollway test room. The results of the measurement were used to pro-duce tables and charts to visually display them.
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The introduction of unleaded fuels in aviation
Pilíšek, Lukáš ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
This bachelor thesis deals with fuels for air piston engine. The thesis is divided into two main parts. The first chapter describes problems of current lead fuels and influence of tetraethyllead on the octane number. The second chapter is dedicated to the development of unleaded fuels including factors which are limiting theirs introduction to the market.
|
|
|
Alternative fuel for internal combustion engines for commercial vehicles
Snášel, Pavel ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
The liquid petroleum fuels, gasoline and diesel, have gradually enforced during the development of thermal machines. Because these fuels are non-renewable and their usage is joined with many ecological and economical problems, we face the task how to replace these dominating fuels. The purpose of this thesis is to summarize and compare the properties of alternative fuels, especially their heating value, and sketch the supposed progress of their usage in transportation.
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