Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Comparative study regarding the use of hydrogen, natural gas and biogas for dual-fuel operation in diesel engines
Submission Author:
Gabriel Marques Pinto , MG
Co-Authors:
Gabriel Marques Pinto, Roberto Berlini Rodrigues da Costa, Túlio Augusto Zucareli de Souza, Ana Júlia Antunes Cintra Rosa, Otávio Raats, Luis Filipe de Almeida Roque, Gustavo Vieira Frez, Beatriz Marques Oliveira, Christian Jeremi R. Coronado
Presenter: Gabriel Marques Pinto
doi://10.26678/ABCM.ENCIT2022.CIT22-0422
Abstract
The use of fossil fuels has increasingly motivated researchers to lookup for more ecological alternatives. When it comes to mobility, the automotive sector already has economically applicable and environmentally sustainable alternatives for replacing fossil fuels, such as the replacement of a portion of diesel with biodiesel and gasoline with ethanol. Another option that can be highlighted is the Hydrotreated Vegetable Oil (HVO), already sold on a commercial scale in some European countries. Although these renewable options present benefits in terms of properties, performance and emission reductions, the competition of internal combustion engines with electric vehicles requires that researchers not only seek for alternatives to replace fossil fuels, but also develop combustion techniques capable of achieving near-zero pollutant emissions to compete with electric technology. In this sense, dual-fuel combustion emerges as an alternative capable of reducing emissions and improving the internal combustion engine’s performance by using fuels with different reactivity. The use of dual-fuel technology, using renewable fuels, could be a way for alternative internal combustion engines to reach near-zero pollutant emissions to compete with electric vehicles, or at least to give survival to these engines that receive a lot of pressure to be discontinued in the future. A renewable fuel that deserves special mention is the green Hydrogen, which is produced by the electrolysis of water while using renewable energy, such as photovoltaics, wind and hydroelectric. Hydrogen has a remarkable calorific value (120 MJ/kg), and the result of its stoichiometric combustion produces only water. So, the use of green hydrogen has a great potential to reduce the carbon footprint in several sectors that make use of fossil fuels. In this sense, the use of hydrogen in internal combustion engines can emerge as a sustainable energy alternative, with much lower costs than fuel cells, a potential user of hydrogen for mobility in the future. In this sense, this work proposes the use of hydrogen in a compression ignition engine, as low-reactivity fuel, while using petrodiesel as high-reactivity fuel. This work also proposes the use of both natural gas and biogas as low-reactivity fuels, since these fuels are common and can provide a good comparison with hydrogen while operating in a dual-fuel compression ignition engine. Emissions, consumptions and efficiencies must be analyzed for each case, to verify the feasibility of the proposed study as an environmentally friendly alternative to the use of traditional single-fuel diesel.
Keywords
DUAL FUEL, Diesel engine, Hydrogen, Biogas, natural gas
