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Four-cylinder petrol engine with eccentric crank mechanism for passenger vehicles
Mlčoch, Pavel ; Kaplan, Zdeněk (referee) ; Píštěk, Václav (advisor)
This Diploma Thesis is aimed at exploring the potential of offset crankshaft mechanism for four cylinder inline petrol engine in terms of reducing the frictional losses of the piston group. Thesis deals with the influence of eccentricity on kinematics, dynamics and balance of the crank train. Furthermore, specific crankshaft balancing is elaborated and applied on 3D CAD model of the crankshaft. Calculation of fatigue safety factor using the advanced LSA method that takes into consideration the effect of forced torsional vibration and utilizes outputs from the FEA software (ANSYS APDL) is performed as well. Thesis also includes design of two options of rubber torsion damper mounted on the engine belt pulley and the follow-up choosing of the more advisable one.
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Plain Bearings of Six-cylinder CI Engine
Hruška, Miroslav ; Píštěk, Václav (referee) ; Dundálek, Radim (advisor)
This master’s thesis focuses on hydrodynamic plain bearing drivetrain in-line sixcylinder diesel tractor engine. In the first part is used as reported in contemporary bearing materials and design solutions bearing basins. Furthermore, given the general Reynolds equation of hydrodynamic lubrication. The main part of the thesis is devoted to creating a virtual model of the crank mechanism in MBS system ADAMS/Engine. Rigid crankshaft in this model is replaced by the flexible crankshaft, which is prepared in the FEM software ANSYS and then exported. The final section presents the results of simulations and their evaluation.
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Five-cylinder diesel engine for commercial vehicles
Švarc, Marek ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The aim of this diploma thesis is the design of the configuration and the method of balancing the crank mechanism with the specified parameters. For a particular configuration, a crankshaft drawing is processed and a strength analysis, considering the crankshaft torsional vibrations is performed in Ansys FEM software. At the end of the thesis, an ideological design of the torsional vibration damper and its effect on the crankshaft stress in the Ansys FEM software is performed.
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Fuel injection pumps for diesel engines
Kovářová, Lucie ; Beran, Martin (referee) ; Píštěk, Václav (advisor)
Bachelor thesis about "Fuel injection pumps for diesel engines," deals with fuel injection pumps for diesel engines and their development. The goal of this thesis is to describe and explain the principle of fuel injection pumps and to categorize them according to their design solution. The categorization begins with the first historical usage of fuel injection pump and ends by outlining the future usage of this technology.
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Five-cylinder in-line diesel engine
Kujawa, Pawel ; Dundálek, Radim (referee) ; Píštěk, Václav (advisor)
The primary objective of this thesis was to design a crankshaft according to given parameters. In this case the thesis also contains the balancing of inertia forces and its moments, modal analysis and calculation of torsion vibrations. The last chapter includes a calculation of the safety factor by using a Finite Element Method.
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Automobiles of the eighties and nineties
Holuša, David ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
This Bachelor Thesis describes events, which led to automotive industry development in eighties and nineties of the twentieth century, further it focuses on situation in industry on each continent and on the most influential car factories, briefly describes the biggest inventions of the time and their principles and function from the technological side of view and considers implementation in modern cars.
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