Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Study of burn rate models in a zero-dimensional model for spark ignition internal combustion engines operating on biogas, biomethane and ethanol
Submission Author:
Jullyane Raquel Almeida Nunes , PA , Brazil
Co-Authors:
Jullyane Raquel Almeida Nunes, Ana Paula Mattos
Presenter: Jullyane Raquel Almeida Nunes
doi://10.26678/ABCM.COBEM2023.COB2023-1060
Abstract
The use of biofuels has increased throughout the country, demonstrating a remarkable transformation toward renewable energy sources. Factors that favor this increase are the territorial availability as it is an agricultural power and the suitable climatic conditions that contribute to the cultivation of raw materials for its production. This results in public policies in the social sector to encourage regional potentialities with the generation of jobs and income with sustainability. Therefore, Brazil has become an essential player in the development and growth of biofuels. On the other hand, the world continues to use fossil fuels heavily, despite growing concern about the effects of their use on global warming. In comparison, biofuels are a more ecological energy source since they release green CO2. Therefore, they are suitable alternatives for replacing petroleum-derived fuels and natural gas in internal combustion engines (ICE). The transportation sector alone is responsible for 20% of the emissions of harmful gases to the environment, fostering the most incredible intensity of the greenhouse effect, without considering other gases released that are harmful to nature. The objective of this work is to study burn rate models for spark ignition (SI) for ICE, operating with biogas/biomethane e ethanol. The simple Wiebe and Double Wiebe in a two-zone zero-dimensional model will be used for a fraction of energy released. First, the experimental data used will be taken from the literature to analyze and make comparisons with the results obtained through numerical simulation. Additional studies on the double Wiebe are needed as there is a lack of data in the literature for all the parameters that the function requires. Parameters such as the onset and duration of combustion, shape coefficient, and combustion efficiency are essential. Biomethane is an alternative fuel to natural gas, and their potential for use in light vehicles needs further investigation to evaluate performance and emission notions. Consequently, making these fuels an innovation for the energy industry.
Keywords
ICE, burn rate, zero dimensional model, Wiebe, Double Wiebe
