Sökning: "Motors and propulsion systems"
Visar resultat 21 - 25 av 39 avhandlingar innehållade orden Motors and propulsion systems.
21. On Zero-dimensional Modelling of Combustion and NOx Formation in Diesel Engines
Sammanfattning : Diesel engine developers are facing major challenges when meeting future demands on NOx and particulate emissions. The exhausts after treatment systems are rapidly improving and the technologies available in a few years will be capable of cutting emission levels close to the demanded levels. LÄS MER
22. Estimation of the In-Cylinder Air/Fuel Ratio of an Internal Combustion Engine by the Use of Pressure Sensors
Sammanfattning : This thesis investigates the use of cylinder pressure measurements for estimation of the in-cylinder air/fuel ratio in a spark ignited internal combustion engine. An estimation model which uses the net heat release profile for estimating the cylinder air/fuel ratio of a spark ignition engine is developed. LÄS MER
23. Investigation of Emission Characteristics for Diluted Flames and Renewable Fuels in Gas Turbine Combustors
Sammanfattning : Gas turbines have served as economically profitable and reliable generators of power for the past few decades, and have mainly been used in simple and combined cycles. The increased restrictions on hazardous emissions and the increased demand for profitability have created new prospects for innovative power cycles. LÄS MER
24. The Performance of a Multi Cylinder HCCI Engine using Variable Compression Ratio and Fast Thermal Management
Sammanfattning : The prime mover in the world today is the Internal Combustion (IC) engine. The development and improvement of the internal combustion engines since Nicolaus August Otto and Rudolf Diesel has continued until today and will continue long into the future. No major competitor to the IC engine has yet emerged. LÄS MER
25. Homogeneous Ignition - Chemical Kinetic Studies for IC-Engine Applications
Sammanfattning : Calculations on a Homogeneous Charge Compression Ignition (HCCI) engine have been performed. Zero-dimensional models were used. The simplest model compressed the gas to auto-ignition, using temperature and pressure at a certain crank angle position obtained from engine experiments. LÄS MER