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Rotary Piston Engine for Small Mobile Systems
Drbal, Milan ; Puškár, Michal (referee) ; Žák,, Marek (referee) ; Píštěk, Václav (advisor)
The dissertation deals with the issue of 1D modelling of a rotary piston engine and prediction of engine characteristics for use in its further development. In this work, the 1D mathematical model of the engine is validated by measuring the combustion pressure in the work chamber, in the intake section and further in the exhaust channel. These data are used to determine the coefficients of the combustion model and, above all, the combustion chamber leakage model. Both effects cannot be modelled accurately included without measuring the work chamber pressures. The use of 1D mathematical simulations is well described in the literature for a reciprocating engine. However, their use for a rotary piston engine is more complicated from the point of view of the geometric differences of both types of engines. In this work, a suitable method of modelling rotary piston engines and their verification using technical experiments and CFD simulations will be described.
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Variable geometry of intake and exhaust ports of Wankel engine
Krejčí, Tomáš ; Beran, Martin (referee) ; Zháňal, Lubor (advisor)
The purpose of this thesis is to design the key parameters of the high-powered Walkel engine and to design a chamber side on the base of computed parameters so that it enables variable change of the intake and exhaust port geometry. Consequently, to carry out a flow simulation in both ports in designed chamber side in order to find out its flow character and geometry change reaction.
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Cyclic Engine Visualization
Fajkus, Jan ; Granát, Jiří (referee) ; Přibyl, Jaroslav (advisor)
Objective of this thesis was acquaint oneself with theory of cyclic engines, understand their principle, describe their conjunctive and different properties. Program part consisted in creating visualization of chosen engines in C/C++ language using openGL.
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Thermodynamic model of Wankel engine with output power 11 kW
Drbal, Milan ; Beran, Martin (referee) ; Svída, David (advisor)
The master’s thesis deals with the Wankel rotary engines and their 1D simulations using a thermodynamic simulation software for the piston engines. The necessary steps for creation of the equivalent model of the four-stroke three-cylinder combustion engine are provided. The engine used for the validation model was Aixro XR 50. The data measured on this engine during testing were used to validate the created thermodynamic model. The discharge coefficient calculation of the intake and the exhaust ports is shown. The 11kW engine design is created using validated thermodynamic model.
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Powertrain of racing Wankel rotary combustion engine.
Blažo, Marek ; Blaťák, Ondřej (referee) ; Zháňal, Lubor (advisor)
The main aim of master’s thesis was to handle the computing proposal and the construction design of the powertrain of racing Wankel rotary engine with 300 kW power output and in the case of 9000 speed per minute. On the basic of these values was made the primary design of the rotary engine, design of the eccentric shaft and rotor housing. Mechanical stress and torsional vibrations of the eccentric shaft were analyzed by using the course of indicator diagram.
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Apex Seal for Wankel Engine
Böhm, Michael ; Ramík, Pavel (referee) ; Svída, David (advisor)
The master’s thesis deals with analysis of sealing elements of Wankel engines and their design. The necessary steps for creation of the model of dynamics of apex seal are provided, whereby the resulting force loads are then obtained. Furthermore, the design of the apex seal spring, the choice of the material and the production jigs for the production of the spring itself are presented. The finished components are tested in the engine testing laboratory and the results evaluated.
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Design of Wankel engine motorcycle
Švehla, Tomáš ; Karásek, David (referee) ; Křenek, Ladislav (advisor)
This thesis deals with the design of motorcycle powered by Wankel engine. The motorbike is used in normal road traffic. The work solves the use of unconventional drive unit in combination with modern chassis solution. The aim is a complex koncept of motorbike using modern technology, which takes into account appropriate categorization of this bike and ergonomic requirements. It would be a significant non-traditional bike demonstrating the new possibilities.
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Motorcycle rotary engine
Slíva, Jakub ; Dlugoš, Jozef (referee) ; Zháňal, Lubor (advisor)
This master's thesis describes a concept of Wankel type rotary engine for use in motorcycle with estimated power between 70 – 80 kW. Basic geometry parameters of rotor and ports are calculated. Power output is then checked on equivalent piston combustion engine with central crank mechanism in 1D simulation model. Rotor is designed for use with oil cooling system. Rotor is checked for safe design by static FEM analysis by applying maximum pressure found out of 1D simulation model.
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Apex Seal for Wankel Engine
Böhm, Michael ; Ramík, Pavel (referee) ; Svída, David (advisor)
The master’s thesis deals with analysis of sealing elements of Wankel engines and their design. The necessary steps for creation of the model of dynamics of apex seal are provided, whereby the resulting force loads are then obtained. Furthermore, the design of the apex seal spring, the choice of the material and the production jigs for the production of the spring itself are presented. The finished components are tested in the engine testing laboratory and the results evaluated.
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