The dissertation „Research of the combustion process in a compression ignition engine fuelled with liquid and gaseous biofuels“ („Skystaisiais ir dujiniais biodegalais veikiančio slėginio uždegimo variklio degimo proceso tyrimai“) prepared by VILNIUS TECH, Saulius Stravinskas. The dissertation was prepared in 2018–2023, supervisor Assoc. Prof. Dr Alfredas Rimkus.
The dissertation was defended at the public meeting of the Dissertation Defence Council of the Scientific Field of Transport Engineering in the Senate Hall of Vilnius Gediminas Technical University at 10 a. m. on 13 June 2023.
The dissertation deals with the combustion efficiency of dual-biofuels (liquid and gaseous) in a compression ignition internal combustion engine, supplying the gas together with the intake air. The main object of research is the combustion process of dual-fuel, i.e., biogas and second-generation biodiesel, in a direct injection compression ignition engine. The goal of the dissertation is to determine the influence of these fuels on performance and emission indicators after experimental and theoretical research of dual-fuels, i.e., biodiesel and biogas, and to make suggestions on the efficiency of these fuels. The dissertation solves several main tasks: the dual-fuel influence on performance and emission parameters is researched using conventional diesel and alternative fuels (biodiesel, natural gas and biogas), changing the composition of the combustible mixture and the injection timing of liquid fuel. Based on the change of theoretical and mathematical modelling parameters of the compression ignition engine, the influence of dual-fuel on the combustion process was determined to evaluate the economic efficiency of dual-fuel use.
Doctoral dissertation readers can search via VILNIUS TECH Virtual Library.
The dissertation was defended at the public meeting of the Dissertation Defence Council of Management in the Senate Hall of Vilnius Gediminas Technical University at 2 p. m. on 13 June 2023.
The modern world is facing challenges in the area of energy management. Information and Communication Technologies (ICTs) are among the most important tools for managing, monitoring, and improving energy consumption efficiency, provided they are implemented and used for this purpose. Not all countries are dealing with these issues successfully and effectively. Therefore, scientific and practical solutions based on region specifics are necessary. It is crucial to understand that energy management in modern theories does not only mean reducing energy consumption but also includes controlling and preventing energy loss. It also focuses on energy efficiency, the use of natural renewable and sustainable energy, energy recovery, and solar energy, which is the most abundant source next to wind energy, hydropower, ocean energy and bioenergy. Modern global energy consumption is drastically increasing since many factors determine the need. Important factors vary from socioeconomic to population increase, making the need for energy security and efficiency assurance essential to secure energy resources in the world in general and in developing countries specifically. ICTs are spreading worldwide and affecting the global systems in many livelihood sectors. ICTs have a wide positive impact on huge economic and developmental factors, from increasing productivity to controlling and monitoring the systems. The importance of energy supply in developing countries and the possibilities brought by ICTs for their management are deniable. The role of innovation in the world is very important, as well as the possibilities that were brought by ICTs for their management to create solutions that positively affect sustainability. The dissertation aims to identify the factors determining the improvement of energy sector management with the help of ICTs in developing countries.
Doctoral dissertation readers can search via VILNIUS TECH Virtual Library.
