Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Performance and Emissions Analyses of Spark Ignition Engine on micro-generation to Gasoline and Natural Gas
Submission Author:
Pedro Diniz , CE
Co-Authors:
Pedro Diniz, Pedro Lima de Aguiar, José Welbson Carneiro de Araújo, William Barcellos, Francisco Nivaldo Aguiar Freire, Lucas Ribeiro da Costa, Arthur Tome, Rodrigo Aragão Rattes
Presenter: José Welbson Carneiro de Araújo
doi://10.26678/ABCM.COBEM2019.COB2019-1511
Abstract
Distributed energy generation to diesel has been more environmentally impacting than other energy sources. In this context, Compressed Natural Gas (CNG) has been widely applied as an alternative fuel to reciprocating Internal Combustion Engines (ICE) for several decades, because it is cheaper and cleaner-burning. Therefore, there was interest in investigating an Otto engine converted either to operate with gasoline or optionally with CNG under different load conditions. Each scenario was analyzed based on the in-cylinder pressure, composition of exhaust gases and fuel consumption. Results have shown that CNG combustion presents lower values of combustion chamber temperature and pressure, Indicated Mean Effective Pressure (IMEP), Specific Fuel Consumption (SFC) and CO, CO2, HC and NOx emissions than on gasoline combustion, but a higher thermal efficiency on CNG combustion has been achieved. Finally, it has been concluded that adequately converted engines to operate with CNG have also shown to be appropriate to gaseous fuel combustion, allowing researching other fuels such as biogas.
Keywords
Efficiency, emissions, In-cylinder pressure, natural gas, spark ignition engine
