RT info:eu-repo/semantics/doctoralThesis
T1 Contribución al estudio de la combustión a través del diagnóstico de la señal de presión en motores de encendido provocado
A1 Gabana Molina, Pedro
A2 Universidad de Valladolid. Escuela de Doctorado
K1 Automóviles - Combustibles
K1 Combustion diagnosis
K1 Diagnóstico de la combustión
K1 33 Ciencias Tecnológicas
AB In recent years, society has become increasingly concerned about the effects of climate change on human life. One of the biggest problems causing climate change is the increase in CO2 emissions. Among the causes of rising CO2 emissions is the production of energy from fossil fuels. A large part of final energy consumption is used in the transport sector. One option for reducing the impact of the transport sector on climate change is the decarbonisation of the sector. A possible alternative for the decarbonisation of the automotive sector is the use of new low or zero carbon fuels in reciprocating internal combustion engines. This option is interesting because it would take advantage of existing infrastructure and industry know-how in combustion engine technology. Hydrogen is one of the fuels with low or zero carbon content that could be used as a fuel in reciprocating internal combustion engines. Hydrogen does not generate CO2 in its combustion process and can be obtained by electrolysis of water using renewable energy with practically zero CO2 emissions. On the other hand, natural gas generates less CO2 emissions per unit of energy produced than conventional fuels (gasoil and gasoline). Moreover, it is possible to obtain fuels with similar properties to natural gas (such as biogas) with zero impact on CO2 emissions after combustion.However, the use of new fuels in internal combustion engines requires the adaptation of the current equipment and engines, as the properties of these fluids are different from those of conventional fuels. In the Recognised Research Group on Engines and Renewable Energies of the University of Valladolid, they have been working for years on the study of the combustion process in reciprocating internal combustion engines. In recent years they have carried out a research line focused on the study of premixed combustion in spark ignition engines applied to new fuels.Based on the above, this thesis focuses on making contributions to the research line, being the ultimate goal to generate knowledege about the combustion process under engine operating conditions. For that some combustion models based on the operating conditions of the engine are developed. These predictive models can be used as a complement to engine models to predict the performance of new engines running on new fuels.For the development of this thesis, experimental tests have been analysed in two different facilities with different engines running on different fuels. The experimental results have been processed by combining techniques developed in this thesis with existing methodology in the literature. The results have allowed to extend the knowledge about the combustion process in spark ignition engines and to improve the research line. They also show that it is possible to predict the combustion process in these engines from the operating conditions.
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/76248
UL https://uvadoc.uva.es/handle/10324/76248
LA spa
NO Escuela de Doctorado
DS UVaDOC
RD 26-jul-2025