Sökning: "Ultra-low emissions"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden Ultra-low emissions.

1. 1. Experimental Investigations of High Pressure Catalytic Combustion for Gas Turbine Applications

   Författare :Jeevan Jayasuriya; Torsten Fransson; Groppi Gianpiero; KTH; []
   Nyckelord :Gas Turbine Combustion; Catalytic Combustion; High Pressure; Ultra-low emissions; SRA - Energy; SRA - Energi;

   Sammanfattning : This work is devoted to generate knowledge and high quality experimental data of catalytic combustion at operational gas turbine conditions.The initial task of the thesis work was to design and construct a high pressure combustion test facility, where the catalytic combustion experiments can be performed at real gas turbine conditions. LÄS MER

3. 2. Waste-heat Recovery Using Thermoelectricity and Silicon Carbide Power Electronics

   Författare :Arash Edvin Risseh; Hans-Peter Nee; Torbjörn Thiringer; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermoelectricity; Power converter; Silicon Carbide; MOSFET; Power management; Thermoelectric generator; Renewable energy; Vehicle; Power electronic; Waste heat; Ultra-low inductance; Power module; Termoelektrisk energiomvandling; Kiselkarbid MOSFET; Effektomvandlare; Förnybar energikälla; Effektelektronik; Spillvärme; Effektmodul; Låg induktiv module; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : Energy consumption in the world has increased continuously due to a growing population and increased energy consumption per capita. Moreover, the largest part of consumed energy still comes from fossil sources which in 2016 was more than 130 PWh. LÄS MER

4. 3. Particulate Matter Emissions from Partially Premixed Combustion with Diesel, Gasoline and Ethanol

   Författare :Mengqin Shen; Förbränningsmotorer; []
   Nyckelord :PPC; PM emissions; Diesel; Gasoline; Ethanol; Particle size distribution;

   Sammanfattning : To achieve cleaner combustion and higher efficiency in compression ignition (CI) engines, many new combustion strategies have been developed. Among these new concepts, partially premixed combustion (PPC) attracts a lot of attention, because of its possibility to achieve simultaneously low soot and NOx. LÄS MER

5. 4. HCCI Combustion by Retaining Residuals. Development and Analyses of a Method to Reduce Fuel Consumption for Passenger Car Gasoline Engines

   Författare :Lucien Koopmans; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; gasoline; variable valve timing; homogeneous charge compression ignition HCCI ; internal combustion engines; fuel-consumption; engine emissions; controlled auto-ignition CAI ;

   Sammanfattning : The demand for more powerful engines on one hand, and greater fuel-efficiency on the other, requires a revolution in engine combustion technology. Homogeneous charge compression ignition (HCCI) can be a fuel-saving, low emissions approach that seems to be very suitable for large displacement passenger car engines. LÄS MER

7. 5. Gasoline Partially Premixed Combustion - An Advanced Internal Combustion Engine Concept Aimed to High Efficiency, Low Emissions and Low Acoustic Noise in the Whole Load Range

   Författare :Vittorio Manente; Förbränningsmotorer; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Environmental concerns such as global warming, the surge of crude oil prices and more stringent emission regulations are demanding the development of internal combustion engines that are highly efficient and low polluting. With classical internal combustion engine concepts such as diesel compression ignition and gasoline spark ignition engines, a trade-off exists between local and global emissions i. LÄS MER