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Powertrain of unconvential V-6 diesel engine with viscous type damper
Hejda, Tomáš ; Novotný, Pavel (referee) ; Píštěk, Václav (advisor)
The purpose of this thesis is design an unconventional powertrain V-6 engine with cylinder opening lines offset 90 degrees and 30 degrees of crank pin offset. It is an analysis of the balance of the crank mechanism, proposed unbalance, build a model of discrete torsion system, design of viscous torsional vibration damper, compares the results of the calculation of strength without crankshaft damper and with damper.
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Powertrain of unconvential V-6 diesel engine with balancing shaft
Vaculík, Tomáš ; Novotný, Pavel (referee) ; Píštěk, Václav (advisor)
The aim of this thesis is to design a powertrain of unconvential V-6 diesel engine with balancing shift with angel of cylinders’s axis 90 degrees and crank pin ofset of 30 degrees. The thesis provides an analysis of balance of inertial forces and their moments, layout of counterbalances on crankshaft and balancing shaft. It also provides a layout of discrete model of torsional cranksaft mechanism and layout of rubber damper of torsional oscillations.
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Viscous type vibration damper of a four-cylinder diesel engine
Bůžek, Václav ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
The point of the dissertation is to describe the design of powertrain of four-cylinder diesel engine equipped with vibration damper. After estimating the discreet model of powertrain, forced vibration calculation is performed to design appropriate vibration damper. The following part describes the safety factor solution of crankshaft fatigue using FEM. The dissertation provides a useful comparison for versions with and without damper. Crankshaft and viscous type vibration damper drawings are also included as appendices.
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Modal Properties of 6-cylinder Tractor Engine Powertrain
Poláček, Milan ; Píštěk, Václav (referee) ; Dundálek, Radim (advisor)
Tato diplomová práce uvádí dynamiku klikového mechanismu šestiválcového řadového motoru za účelem návrhu klikového hřídele v CAD programu Pro/Engineer. Následuje popis vibrací klikového mechanismu a analytický výpočet jeho torzních vibrací. Hlavní část diplomové práce se pak zabývá konverzí hřídele do konečno-prvkového modelu v programu ANSYS a jeho importem do prostředí Adams/Engine. V tom je provedena modální analýza klikového ústrojí pro získání vlastních frekvencí a tvarů. Na konec práce je porovnán výstup z analytického řešení a výsledky z multi-body systému.
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Realization of educational problem based on torsional vibration apparatus
Bartošek, Daniel ; Hartl, Martin (referee) ; Vaverka, Michal (advisor)
The presented master´s thesis deals with realization educational tasks on torsional vibration apparatus. It was designed and tested six educational experiments, to extend student´s knowledge of the static and dynamic properties of rotary systems. On the experimental apparatus it is possible to use inertial discs, adjustable semi-rotary damper with forced vibration crank drive unit. New set of shafts extends the variability of experimental apparatus. Students can realize the measurement of dynamic characteristics and torsional vibration using oscilloscope. New frame for the apparatus which meet all operation requirements was also designed. The solved problematics and all educational tasks are described in new prepared materials for teaching.
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Powertrain of a V-four engine
Pecka, Luboš ; Svída, David (referee) ; Drápal, Lubomír (advisor)
This thesis is focused to design of powertrain V-four gasoline engine. It compares crank-pins configuration, firing sequence and bank angle with a view of crankshaft stress and torsional vibration. The thesis also includes crankshaft balancing design.
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