|
|
Cylinder deactivation of a spark-ignition engine
Fridrichová, Kateřina ; Píštěk, Václav (referee) ; Drápal, Lubomír (advisor)
This thesis focuses on a technology called cylinder deactivation. The technology helps reducing emissions and fuel consumption. The first part summarizes the possibilities of application of the cylinder deactivation technology as well as advantages resulting from combination with other technologies. The thesis also consists of two design options for valvetrain in inline four-cylinder engine and the results of simulations of dynamics of its cranktrain.
|
|
|
Propfan engines in civil aviation transportation
Polák, Andrej ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
Bachelor thesis is written in the search form and discusses propfan aircraft engines. After introducing the concept itself, the first part deals with the principle functioning of engines and propulsion efficiency. The second part briefly describes the construction of these engines with a focus on specific parts of propfan engines differentiating concept from other aircraft engines. Then summarizes the features of these engines, describes their advantages and disadvantages and the possibilities of eliminating disadvantages. Finally briefly describes the history of the development of propfan engines.
|
|
|
Aerodynamic interaction of autonomous vehicles
Opátová, Alexandra ; Čavoj, Ondřej (referee) ; Vančura, Jan (advisor)
This thesis deals with CFD simulation of platooning vehicles and their aerodynamic characteristics, created in Star CCM+ software. The main focus is on their aerodynamic drag dependency on different spacing between vehicles which allowed to evaluate the most energy efficient distance for platoon of vehicles. Furthermore, the procedure how to calculate the fuel consumption is described for set of variables.
|
|
|
Cylinder Deactivation for Internal-combustion Engines
Fridrichová, Kateřina ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor’s thesis focuses on a technology reducing fuel consumption and emissions called cylinder deactivation. The evolution of the technology is described in the first part of the thesis together with explanation of the nature of fuel savings. The description of consequences associated with usage of the technology and possible design approaches for gasoline engines are written in the following part. The thesis also incorporates the results of test performed on diesel engines, where the technology is not currently in production. The last part includes other components used in engines with cylinder deactivation, especially vibration absorbers, together with some examples of application of this technology.
|
|
|
Aerodynamic interaction of autonomous vehicles
Opátová, Alexandra ; Čavoj, Ondřej (referee) ; Vančura, Jan (advisor)
This thesis deals with CFD simulation of platooning vehicles and their aerodynamic characteristics, created in Star CCM+ software. The main focus is on their aerodynamic drag dependency on different spacing between vehicles which allowed to evaluate the most energy efficient distance for platoon of vehicles. Furthermore, the procedure how to calculate the fuel consumption is described for set of variables.
|
|
|
Cylinder deactivation of a spark-ignition engine
Fridrichová, Kateřina ; Píštěk, Václav (referee) ; Drápal, Lubomír (advisor)
This thesis focuses on a technology called cylinder deactivation. The technology helps reducing emissions and fuel consumption. The first part summarizes the possibilities of application of the cylinder deactivation technology as well as advantages resulting from combination with other technologies. The thesis also consists of two design options for valvetrain in inline four-cylinder engine and the results of simulations of dynamics of its cranktrain.
|
|
|
Cylinder Deactivation for Internal-combustion Engines
Fridrichová, Kateřina ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor’s thesis focuses on a technology reducing fuel consumption and emissions called cylinder deactivation. The evolution of the technology is described in the first part of the thesis together with explanation of the nature of fuel savings. The description of consequences associated with usage of the technology and possible design approaches for gasoline engines are written in the following part. The thesis also incorporates the results of test performed on diesel engines, where the technology is not currently in production. The last part includes other components used in engines with cylinder deactivation, especially vibration absorbers, together with some examples of application of this technology.
|
|
|
Propfan engines in civil aviation transportation
Polák, Andrej ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
Bachelor thesis is written in the search form and discusses propfan aircraft engines. After introducing the concept itself, the first part deals with the principle functioning of engines and propulsion efficiency. The second part briefly describes the construction of these engines with a focus on specific parts of propfan engines differentiating concept from other aircraft engines. Then summarizes the features of these engines, describes their advantages and disadvantages and the possibilities of eliminating disadvantages. Finally briefly describes the history of the development of propfan engines.
|
|
|
Propfan engines in civil aviation transportation
Polák, Andrej ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
Bachelor thesis is written in the search form and discusses propfan aircraft engines. After introducing the concept itself, the first part deals with the principle functioning of engines and propulsion efficiency. The second part briefly describes the construction of these engines with a focus on specific parts of propfan engines differentiating concept from other aircraft engines. Then summarizes the features of these engines, describes their advantages and disadvantages and the possibilities of eliminating disadvantages. Finally briefly describes the history of the development of propfan engines.
|
guest ::
