Search for dissertations about: "piston geometry"

Showing result 11 - 15 of 27 swedish dissertations containing the words piston geometry.

2. 11. DME Combustion in Heavy Duty Diesel Engines

   Author : Henrik Salsing; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; combustion; heavy duty; DME; dimethyl ether; Diesel engine;

   Abstract : Interest in alternative energy and fuels has grown considerably in recent years due to increasing concern about the adverse effects of global warming, the limited sources of non-renewable feedstocks, the insecurity of their supply and associated fluctuations in their prices. However, although there is an urgent, and widely recognized, need to address these issues, selecting suitable candidate feedstocks and fuels is far from straightforward, since numerous factors must be considered when selecting promising candidates for further evaluation and, ultimately, commercial use. READ MORE

4. 12. Characterization of Glow Plug and HCCI Combustion Processes in a Small Volume at High Engine Speed - Load Range, Emission Characteristics and Optical Diagnostics

   Author : Vittorio Manente; Förbränningsmotorer; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optical diagnostics; millidomain combustion; HCCI; high speed;

   Abstract : The objective of this research that has taken me halfway to my PhD degree was to understand how HCCI combustion behaves in a small volume at high rotational speed. The investigation has been carried out using a modified model airplane engine. READ MORE

5. 13. Numerical and experimental study of performance of a hydraulic motor

   Author : Leon Dahlén; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydraulic fluid; hydrostatic transmission; hydraulic motor; Engineering mechanics; Teknisk mekanik; Maskinelement;

   Abstract : The aim of this study was to develop an understanding of the fluid properties that influence the efficiency of hydraulic systems in a steady-state, especially components in hydrostatic transmission systems under different running conditions. The aim has also been to investigate and model the sources of losses in hydraulic machines, in order to estimate the losses, taking fluid properties into account. READ MORE

6. 14. Studies on the Load Range of an HCCI Engine using In-Cylinder Pressure, Ion Current and Optical Diagnostics

   Author : Andreas Vressner; Förbränningsmotorer; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ion current; knock; laser ignition; chemiluminescence imaging; LES; temperature stratification; PLIF; auto igntion; flame propagation; HCCI; diagnostics; low temperature combustion;

   Abstract : Internal combustion engines are continuously developed towards decreased hazardous emissions and lower fuel consumption. The homogeneous charge compression ignition (HCCI) engine is a promising concept which combines the best features of the Diesel engine and the spark ignition (SI) engine. READ MORE

7. 15. Generation of Leachate and the Flow Regime in Landfills

   Author : David Bendz; Avdelningen för Teknisk vattenresurslära; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; teknisk geologi; Hydrogeologi; geographical and geological engineering; Hydrogeology; model; transport; flow; leachate; water; hydrology; landfill; MSW; teknisk geografi; Geophysics; physical oceanography; meteorology; Geofysik; fysisk oceanografi; meteorologi;

   Abstract : The environmental impacts of landfills are associated mainly with the emission of leachate and biogas. Sanitary landfilling aims to stabilize the landfill in a efficient and controlled way, so that the environmental impacts are minimized. When a sanitary landfill has attained its final storage quality, it can be integrated into the environment. READ MORE