Search for dissertations about: "central engine"
Showing result 16 - 20 of 43 swedish dissertations containing the words central engine.
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16. Modeling for control of centrifugal compressors
Abstract : Downsizing and turbocharging of engines provide a way to meet increasing demands for efficiency and performance in the automotive industry. An engine design is a result of compromises, e.g. the selection of charging system, and the trend is to reduce these compromises by increasing system complexity. READ MORE
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17. Compressor Modeling for Control of Automotive Two Stage Turbochargers
Abstract : There is a demand for increasing efficiency of automotive engines, and one way to achieve this is through downsizing and turbocharging. In the design compromises are made, for example the maximum power of the engine determines the size of the compressor, but since the compressor mass flow range is limited, this affects the torque for low engine speeds. READ MORE
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18. Hierarchical Modeling and Analysis of Real Time Systems
Abstract : UPPAAL is a tool for model-checking real-time systems developed jointly by Uppsala University and Aalborg University. It has been applied successfully in case studies ranging from communication protocols to multimedia applications. The tool is designed to verify systems that can be modeled as networks of timed automata. READ MORE
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19. Challenges and Advantages of Stratified Combustion in Gasoline Direct-Injected Engines
Abstract : The modern world is based on an extensive transport network in which passenger vehicles play a major role. Although passenger vehicles have improved significantly in recent decades, they still contribute to the pollution of our environment and global warming. Consequently, new ways of reducing their emissions are needed. READ MORE
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20. Active Galactic Nuclei in galaxy surveys : Empirical paths to the fiery hearts of cosmic beasts
Abstract : Some galaxies emit excessive amounts of light from their centers, caused by accretion of gas onto super-massive black holes (SMBH). These galactic cores are often referred to as Active Galactic Nuclei (AGN) and they come in many different forms, distinguishable by their emission properties. READ MORE