Sökning: "TECHNOLOGY Other technology Mechanical engineering"
Visar resultat 6 - 10 av 6892 avhandlingar innehållade orden TECHNOLOGY Other technology Mechanical engineering.
6. Modeling Diesel spray combustion using a Detailed Chemistry Approach
Sammanfattning : The rapid development of computer hardware during the past decade has contributed substantially to advances in almost all branches of science. Computer modeling is being applied to increasingly small physical scales and increasingly large domains, facilitating the generation of advanced phenomenological models and models based on first principles. LÄS MER
7. Differential railway track settlement in a transition zone – Field measurements and numerical simulations
Sammanfattning : In a transition zone between two different railway track forms, there is a discontinuity in track structure leading to a gradient in track stiffness. Examples include transitions between different superstructures, e.g., slab track to ballasted track, and/or between different substructures, e. LÄS MER
8. Coated Ferritic Stainless Steels as Interconnects in Solid Oxide Fuel Cells - Material Development and Electrical Properties
Sammanfattning : Solid oxide fuel cells (SOFCs) are attracting increasing interest as devices with potentialuses in decentralized and clean electricity and heat production. Several challengeswith respect to materials have to be overcome to achieve efficiencies and life-spansthat are sufficient for long-term applications. LÄS MER
9. Component and system design of a mild hybrid 48 V powertrain for a light vehicle
Sammanfattning : This thesis presents contributions in three areas relevant for the development of 48 V mild hybrid electric powertrains for cars. The first part comprises methodologies and extensive testing of lithium-ion battery cells in order to establish the electric and thermal performance using equivalent circuit models. LÄS MER
10. Large-Eddy Simulation of Gasoline Fuel Spray Injection at Ultra-High Injection Pressures
Sammanfattning : Gasoline direct injection is a state-of-the-art technique that reduces hydrocarbon and particulate emissions. However, further improvement is needed to meet current as well as future emission regulations. LÄS MER