Search for dissertations about: "combustion chamber geometry"

Showing result 1 - 5 of 23 swedish dissertations containing the words combustion chamber geometry.

2. 1. Experimental Investigations of Combustion Chamber Heat Transfer in a Light-Duty Diesel Engine

   Author : Jessica Dahlström; Förbränningsmotorer; []
   Keywords : internal combustion engines; heat transfer; diesel engine; Diesel combustion; combustion chamber geometry; piston geometry; spray parameters;

   Abstract : This work concerned experimental studies of heat transfer in a light-duty diesel engine. Combustion is affected by several parameters, such as pressure, engine speed, mass of injected fuel and in-cylinder gas flow. These parameters are in turn affected by the combustion chamber geometry and fuel spray characteristics. READ MORE

4. 2. Pulsating Combustion - Combustion Characteristics and Reduction of Emissions

   Author : Annika Lindholm; Förbränningsfysik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Exhaust gas recirculation; NOx; Heat Release; Combustion related radicals; Laser based measurements; Pulsating Combustion; Unsteday Flow; Emissions; Combustion; Energy research; Energiforskning;

   Abstract : In the search for high efficiency combustion systems pulsating combustion has been identified as one of the technologies that potentially can meet the objectives of clean combustion and good fuel economy.Pulsating combustion offers low emissions of pollutants, high heat transfer and efficient combustion. READ MORE

5. 3. Alternative Combustion Strategies for Gasoline Engines

   Author : Daniel Dahl; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; engines; SI; SGDI; CAI; HCCI; Otto; lean burn; gasoline; combustion; fuel consumption;

   Abstract : Due to increasingly strict legislative demands and customer concerns regarding CO2emissions, there is a need to develop and implement new combustion strategies forgasoline (Otto) engines. In attempts to meet this need, most attention is focusing onthe low load/speed range where the classic spark ignition strategy (SI) has poorefficiency, mainly due to the throttling of the intake air causing pumping losses. READ MORE

6. 4. HCCI Combustion - Engine Operation and Emission Characteristics

   Author : Magnus Christensen; Förbränningsmotorer; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Motorer; framdrivningssystem; Motors and propulsion systems; efficiency; emissions; combustion; HCCI; engine;

   Abstract : The potential and limitations of the Homogeneous Charge Compression Ignition (HCCI) engine concept has been experimentally investigated. The operation range, in terms of usable air/fuel ratio and engine load, and the emission characteristics have been studied. An 1. READ MORE

7. 5. 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