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Present Trends is Power Increasing of CI and SI Engines
Slovák, Jan ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
This bachelor thesis is only the search character. In this thesis are described different types of engines, also are discussed the most common types of supercharging engines – by compressor and turbocharger. Along with them are showed less known methods of supercharging. At next chapter, thesis describes another possible methods of increasing of engine power like chiptuning etc. Last chapter is about near future and describes for example engine downsizing and hybrid cars.
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Formula 1 Engines
Kaňa, Roman ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
This bachelor thesis describes construction of some functional parts of the Formula 1 engine. In the first part I focused on crankshafts, connecting rods, pistons, valve gears and compared them with serial produced engines. The work further continues with the introduction of some unconventional solutions used on Formula 1 engines and comparison of the characteristics of known power units.
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Design of Tagnpps 97 m3 Wagon Braking System in SS Braking Mode
Trubač, Pavel ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
At first part of my work is described the brake for freight wagon, its princip and control. Next part is dedicated to describe to brake with block and brake with disc. Main object of my work is concrete propose of brake with blocks and reason, why is this brake use on most of wagons. Next I describe requests for brake accessories for freight wagons, mainly for operation in SS mode. At second part is proposal for brake for freight wagon type TAGNPPS for operating in SS mode. Scheme of mechanical and pneumatic part, CAD model of this brake system, voltage analyses by FEM method of choosing component – brake lever, created in SolidWorks 2011 mode. For compare of result by FEM method is used analytic count of this component.
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Auxiliary drives of modernized trolley-buses
Houšť, Pavel ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
The works describes the possibility of an upgrade by replacing the auxiliary trolley drives for DC motors asynchronous motors. It follows the historical development of the drives from the beginning to the present. It describes the advantages and disadvantages. Finaly the practical use of new ancillary drives for trolley.
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Design of single-cylinder diesel engine
Němec, Jan ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
This thesis deals with the construction of the whole combustion engine, the crankshaft design, the piston and the piston rod. It also outlines the central lubrication, the cooling, the injection pump, the movable pump and the gear pump as well as fuel filtering, injection, engine timimg, etc. The four-cycle engine has four working cycles. During the first cycle the "clean" air is drawn and the piston moves from the bottom centre to the top centre and it comes to compression in the cylinder thanks to the adjusting of the advance and the fuel is injected into the cylinder. As the piston moves rapidly to the top centre, the pressure and the temperature increase so much that the fuel ignites. The pressure is about 26 atm (2.634Mpa) and the temperature is about 600°C. The fuel burns ideally in spherical wave fronts. The fuel is injected under high pressure as aerosol generates. As the fuel expands, the volume increases and the piston moves to the bottom centre. And it is its only working cycle.The piston moves from the bottom centre to the top centre and the exhaust valve opens through which the hot gases of combustion leave - and everything repeats. The design of the particular components is shown in the animations. Modelling and simulations were produced using CAD system. Everything is supported with calculations.
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Powertrains of BMW cars
Guláš, Tomáš ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
Bachelor's thesis deals with the powertrains of the Munich carmaker BMW. It evaluates their historical development, focuses on the interesting innovative solutions in this domain, describes the current status and the success of BMW in the world market, points to a wide perspective and vision for the future car.
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Chassis of racing motorcycles
Kudr, Jan ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
Those theses describe complex of motorbike chassis and components from racing sector. Here is explained geometry of motorbike chassis and impact to riding properties. Geometry of motorbike chassis and driving style are closely linked with adjusting of damping and springing. In the end, depending on chassis adjustment tires can show us how good or how bad is adjusted the chassis.
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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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Redesign of passenger car
Kacálek, Jaroslav ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
In the introduction of the work there are briefly depicted main information about a reconstructed car, reasons of purchase and reconstruction of this car. In the first chapter there are reasons for reconstruction related to the state of the car described in more detail. Next chapters describe particular procedures of the reconstruction. Last chapter describes the final touches. Reached results and the comparison with the starting state are evaluated in the end.
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