Tesis doctoral de Julien Manin
Thermal engines have become a monopoly and uncompromising regarding transportation systems. Since their introduction, the internal combustion en- gines have been developed with the first objective to reduce consumption and improve performance and drivability. Over the time, pollution has become a critical factor for governments resulting in the introduction of regulations to reduce pollutant emissions of combustion engines. with constant technological progresses required by the anti-pollution stan- dards, direct injection has become indispensable as regards diesel engines. The introduction of fuel directly into the combustion chamber allows a high level of control on the energy released by the exothermic process that is combustion. with the emergence of new combustion strategies, the process of injection took the lead and the spray has become the main factor. the work done throughout this study to analyze the process of fuel-air mix- ing was based upon the development of powerful laser diagnostic techniques. as a first step, the diesel spray has been studied in an isothermal atmosphere in order to avoid the evaporation of the fuel (n-dodecane) through the use of structured illumination to get the mass distribution of mixing by controlling the multiple mie scattering. The application of rayleigh scattering in the va- porized region of a jet injected into a high temperature chamber has allowed the extraction of the mixing field of the jet under evaporative conditions. the analysis and comparison of the jet introduced in vaporizing conditions or not permits to understand better the process of mixing during a diesel injection event. In addition, depending on the state of the fluid, liquid or gaseous, the experimental conditions have different effects and therefore the air-fuel mixing behaves in distinct ways.
Datos académicos de la tesis doctoral «Analysis of mixing processes in liquid and vaporized diesel sprays through lif and rayleigh scattering measurements«
- Título de la tesis: Analysis of mixing processes in liquid and vaporized diesel sprays through lif and rayleigh scattering measurements
- Autor: Julien Manin
- Universidad: Politécnica de Valencia
- Fecha de lectura de la tesis: 28/02/2011
Dirección y tribunal
- Director de la tesis
- Raul Payri Marin
- Tribunal
- Presidente del tribunal: José Mª Desantes fernández
- lucio Araneo (vocal)
- José enrique Juliá bolívar (vocal)
- lyle Pickett (vocal)