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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"mixture formation"”.
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A comprehensive analysis of natural gas direct injection and of mixture formation in spark ignition engines
… of the physical processes related to the jet formation and development and the formation of the air-fuel mixture. The results of the numerical analysis are then correlated with the outcomes of an experimental activity performed on the developed multi-cylinder engine and on an optical access …
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Rapid premixing fuel-water injector in burner combustion
… this research are to investigate the effects of mixture formation between biodiesel and water on using rapid mixing injector and to analyze the influence of mixture formation on flame propagation and combustion characteristics together with the effect of water content on the gas emissions are …
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Rapid premixing fuel-water injector in burner combustion
… this research are to investigate the effects of mixture formation between biodiesel and water on using rapid mixing injector and to analyze the influence of mixture formation on flame propagation and combustion characteristics together with the effect of water content on the gas emissions are …
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Experimental and Theoretical Verification of the Applicability of Homogeneous Combustion in a Porous Reactor to Internal Combustion Engines
… combustion engine application, the time scale of mixture formation and combustion process is crucial. Thus, its investigation is the main objective of the present research. Fluid mechanical and thermodynamic conditions in porous reactors differ considerably from conventional, free volume systems. …
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Combustion and soot formation modelling in modern gasoline direct injection engines using computational fluid dynamics
… Computational Fluid Dynamics (CFD) to model the formation of soot precursors in modern direct injection gasoline engines, with a particular emphasis on statistically efficient calibration of key sub-models. The research addresses the challenges associated with accurately representing combustion …
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Investigations on the pollutant emissions of gasoline direct injection engines during cold-start
… standards. This work aims to examine the formation processes of the HC, NOx and PM emissions during the cold-start phase in a GDI engine, and the sensitivity of the pollutant emissions to different operation strategies. To this end, a detailed analysis of the crank-start was carried out, …
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Spray characterization of flex-fuel gasoline di injectors and spray interaction with charge motion in a variable valve actuation engine
… type, fuel temperature, nozzle design) on spray formation was discussed in both qualitative and quantitative methods. High-speed visualization of the in-cylinder charge motion was carried out as well using an optical accessible engine. The testing was conducted for the conventional valve strategy …
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The effect of fuel injection pressure and in cylinder temperature on igniton delay, combustion performance and emission
The mixture formation prior to the ignition process plays as a key element in the diesel combustion. The objective of this research was to help an understand of the effects of air fuel mixing process during the ignition delay period and initial heat release in combustion process that strongly …
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Untersuchung des Einflusses der Spritzlochgeometrie der Einspritzdüse auf die dieselmotorische Gemischbildung und Verbrennung
Mit dieser wissenschaftlichen Arbeit wurde eine geschlossene Kette von Versuchsträger und Messtechniken geschaffen, die eine detaillierte und grundlegende Analyse der dieselmotorischen Gemischbildung und Verbrennung von der Ausbildung des Sprays in der kalten Einspritzkammer über die Detektion der …
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Laseroptische Untersuchungen des Verbrennungsprozesses in einem PKW-Dieselmotor
… can be divided in the sub-processes injection, mixture formation, auto-ignition and combustion. In the present work different laser-optical measurement technologies were used to receive information about the combustion in a passenger car diesel engine. The investigations were carried out in a …
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Autoignition in turbulent two-phase flows
… locations with a specific value of the mixture fraction. Changes in the operating conditions (initial turbulence intensity of the background gas, global equivalence ratio in the spray region, initial droplet size distribution) affected spray ignition through changes in the mixture …