Search for dissertations about: "engine performance"

Showing result 1 - 5 of 350 swedish dissertations containing the words engine performance.

2. 1. On-Engine Turbocharger Performance Considering Heat Transfer

   Author : Habib Aghaali; Hans-Erik Ångström; Jose R. Serrrano; KTH; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbocharger; Internal combustion engine; heat transfer; turbocharged engine; on-engine turbocharger; turbocharger performance; توربو شارژر، موتور احتراق داخلی، انتقال حرارت، توربوچارجر; turbo; turboladdare; förbränningsmotor; värmeöverföring; turboladdad motor;

   Abstract : Heat transfer plays an important role in affecting an on-engine turbocharger performance. However, it is normally not taken into account for turbocharged engine simulations. READ MORE

4. 2. Challenges in aero engine performance modeling

   Author : Sebastian Samuelsson; Chalmers University of Technology; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; part-load modeling; Aero engine; conceptual design; performance modeling; multidisciplinary design;

   Abstract : There is a continuous drive for ever more efficient aero engines due to environmental as well as economical concerns. As the technology of conventional turbofan engines matures, there is a need for new aero engine concepts as well as incremental improvement of existing technologies. READ MORE

5. 3. Aero Engine Intercooling

   Author : Xin Zhao; Chalmers University of Technology; []
   Keywords : PIV; CFD; porous media; aero engine; pressure measurements; intercooling control; system performance; intercooler; variable flow path;

   Abstract : Intercooling has the potential to provide a shortcut to the next generation aero engines with higher bypass ratio (BPR), higher overall pressure ratio (OPR) and higher turbine inlet temperature (TIT) by lowering the high pressure compressor (HPC) delivery temperature. To be able to establish a systematic understanding of aero engine intercooling, the heat transfer and pressure loss characteristics of a given intercooler architecture need to be known in the parameter range anticipated for the engine optimization. READ MORE

6. 4. The Effects of Oxygenated Fuels on DISI Engine Particle Emissions and Efficiency : Experimental investigation of the effects of oxygenated biofuels on particle emissions and engine performance

   Author : Tara Larsson; Ulf Olofsson; Terese Løvås; KTH; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Biofuels; reneawable fuels; direct-injected engines; spark-ignited engines; particle emissions; engine efficiency; engine performance; Machine Design; Maskinkonstruktion;

   Abstract : The transport sector is one of the main sources of greenhouse gas emissions.Replacing fossil fuels with renewable fuels can help reduce the impact oftransportation on the climate. READ MORE

7. 5. Embedded Systems and FPGAs for Implementation of Control Oriented Models, Applied to Combustion Engines

   Author : Carl Wilhelmsson; Förbränningsmotorer; []
   Keywords : NOx; NO; Nitrogen Oxides; Emissions; Air pollution; Algorithms; Physical model; Mathematical model; FPGA; Field Programmable Gate Arrays; Embedded Systems; Micro-controllers; Engine; Diesel Engine; Internal Combustion Engine; Combustion Control; Engine Control.;

   Abstract : Performance demands put on combustion engines are ever increasing, e.g. demands on emissions and fuel consumption. The increased demands together with new combustion concepts increase the need for feedback engine and combustion control. READ MORE