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High Pressure Injection Systems
Břoušek, Roman ; Otipka, Václav (referee) ; Dundálek, Radim (advisor)
This thesis is based on high pressure injection system mostly for commercial vehicles. The aim is to describe direct injection systems on specific drive units with methods of reducing emissions and their common issues. Gradually, the parts of injection system are described including their function. By comparing direct injection systems of gasoline and diesel similarities can be notice by aspect of their function. Finally is good to mention onset of electrification and thus develepment of injection systems, which are retreat by combination of financial and technological aspects.
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Lubricants in Up-to-date Combustion Engines
Čech, Martin ; Svída, David (referee) ; Dundálek, Radim (advisor)
In my bachelor work I have tried to analyze informations about lubricants in up to date combustion engines. This work deals with motor oils and their viscosity and performance classification The special motor oils for motorcycles are part of this bachelor work too. One of the aims of bachelor work provide informations about gear oils for automatic as well as manual transmissions and their classification. This work describes also questions about additives.
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Calculation of Con-rod Stress in Multi-Body System
Malinský, Marek ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
The aim of my thesis is to create a procedure for the calculation of con rod stress in MBS Software. The thesis contains several parts, i.e. a short research of contemporary con rods, con rod modelling with the use of Pro/E, methodics of the finite-element con rod model preparation and model analysis in ANSYS Software, creating of virtual combustion engine template with flexible con rod and carrying out a strain hardening analysis in ADAM/Engine software. The theme of my thesis is quite demanding in the combination and the use of several computer software programmes. The thesis offers a survey of possibilities, procedures and methodics of con rod stress solutions that help to clarify the matter.
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Variable Intake manifold for 16V Engine
Konečný, Lukáš ; Franz, Rudolf (referee) ; Dundálek, Radim (advisor)
Aim of the diploma thesis is to design intake ducting with variable cross-section for 16V diesel engine consisting from divided intake manifold and divided ejector. Cross-section variability is ensured by a swirl flap placed in the divided ejector. Next aim of thesis is to provide drawing documentation for production of samples. For designing was used PTC Creo system and software GeomCaliper. Also was taken account of manufacturing of the parts with sand-casting, especially to guarantee trouble-free taking out of models from the moulds, and taking out of cores from core moulds, and also for machinability of some elements. Introduction of thesis is focused on diesel engine emissions and ways of their reduction.
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Balancing of 3-cylinder Tractor Engine
Přeslička, Jaroslav ; Hrdlička, Zdeněk (referee) ; Dundálek, Radim (advisor)
The thesis deals with analysis of balancing of given cranktrain. At the introductory part is solved kinematics of the crank mechanism. Another part of the text occupies with dynamics of the crank mechanism and eventuality of its balancing with using of point-mass model. This simplified model is utilized for analytic solution of given mechanism. Results of analytic solution are compared with results of MBS solution. At the last part is done analysis of minimal distance between the selected parts of the mechanism. Then simple optimization of balancing is done. At the end is considered balancing of the mechanism and simple improvement is proposed, considered are results of minimal distance analysis too.
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Possibilities of Common-rail Injection System
Smilek, Tomáš ; Svída, David (referee) ; Dundálek, Radim (advisor)
Tomáš Smilek Possibilities of Common-rail Injection System BT, Institute of Automotive Engineering, 2008, p. 23, fig. 18, appendices 0 This study´s motivation was to describe common-rail injection system. This work describes history of inovation same as the key parts of this system and function each of them. It also declares advantages in confrontation with old way of injection.
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Piston for 96kW 4-stroke SI-engine
Josefíková, Kateřina ; Svída, David (referee) ; Dundálek, Radim (advisor)
This bachelor`s thesis will deal with calculating suggestion and structural solution piston for 4-stroke petrol engine. Next then determination basic dimensions engine and crak mechanism. On the basis empirical detail will determine basic dimensions piston. For designed kinematics crank mechanism will perform fort control critical sectin piston
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