Práce a štúdie
Permanent URI for this communityhttps://drepo.uniza.sk/handle/hdluniza/121
Browse
3 results
Search Results
Item Ignition system and their purpose in aircraft reciprocating engines(University of Žilina, 2023) Vorlíček, Marek; Čerňan, JozefThis research describes the function and principles of ignition systems in aircraft reciprocating engines. Physical-chemical processes, which are part of combustion, and the factors affecting them are defined in detail. Types of ignition systems are divided based on main parts and frequency of appearance in aircraft engines. Components of ignition and their function in electric and magnetic circuits are individually described. The future development in ignition systems is defined. The research includes an analysis of the pros and cons of laser ignition in its application in aviation. It presents Low-Temperature Combustion or Volumetric Ignition using Low-Temperature Plasma. An example may be the Microwave-assisted Plasma Ignition System. Engine speed and vacuum in intake are the main parameters influencing the ignition timing curve in Electronic Control Unit Master developed by IMF Soft. This ECU is used in the designed ignition system of testing engine. The designed timing curves were tested, and the results of engine power and torque were compared. In conclusion, the optimal timing curve is evaluated for this reciprocating engine.Item Design and implementation of an alternative Rotax 915is engine management system(University of Žilina, 2023) Psárska, Vanesa Viktória; Čerňan, JozefThe content of this article is design and implementation of an alternative Rotax 915is engine management system. In my research, I worked with a wide-spectrum control unit ECU MASTER designed for the optimization of the injection time of spark-ignition engines and also the control of the ignition advance taking into account several sensors of engine input parameters. The article was created as part of research into the issue of optimal control of piston engines. Current methods of controlling engines and their systems, in principle, allow very precise control of important systems of modern piston engines, especially with regard to the ignition and fuel system. The inclusion of microprocessor units with multiple options for input parameters allow the control unit to take into account even less important parameters, which, however, help the control unit to keep the engine running smoothly while maintaining high combustion efficiency. The elaborated design of a possible alternative engine control system is subsequently connected with the practical realization of this control system. The result of the research is the design of the control system of the Rotax 915is engine and the subsequent practical production and adjustment of the control unit under the name ECU MASTER, which verifies the universal applicability of such a unit for various combustion engines.Item Ignition systems of combustion piston engine and possibility of its optimization(University of Zilina, 2021) Vorlíček, Marek; Čerňan, JozefThis paper explains the basic definition of ignition, combustion and description of the ignition system functionality. The ignition systems are divided according to established criteriums into the most used types and descriptions of each ignition system components. It focuses on ignition timing and circumstances that affect it and how they influence the observed parameters. I am using ignition timing as an instrument for the observation and optimization of ignition. These practices are tested on piston engine in the practical part of this paper. It describes the modification of the timing curve, measuring of engine power and comparison between each curve. It is an analysis of engine performance under different conditions. The most efficient timing curve is chosen and further evaluated. The used engine for this paper was a rebuild from a car engine used in Trabant 601, VEB Automobilwerke automobile.