MDPI | hydrogen
Edgar Eduardo Cedillo Cornejo1, Rogelio González Oropeza1, Stephen Samuel2 , William Vicente3, Rodolfo Sosa Echeverría4, Elías Granados Hernández4, Gilberto Fuentes García4 , Graciela Velasco-Herrera5 and Sánchez Pablo Álvarez4
- 1 Facultad de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico
- 2 School of Engineering, Computing and Mathematics, Oxford Brookes University, Oxford OX3 0BP, UK
- 3 Instituto de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico
- 4 Instituto de Ciencias de la Atmosfera y Cambio Climático, Universidad Nacional Autónoma de México,Ciudad Universitaria, Mexico City 04510, Mexico
- 5 Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico;
Abstract
Using hydrogen in compression-ignition internal combustion engines can reduce pollutant emissions and improve performance by enabling faster and more complete combustion.
However, it is essential to determine the optimal injection timing and duration for both hydrogen and conventional fuels. These factors are critical in engine modeling analysis. This study aimed to analyze pollutant emissions, combustion, and engine performance with oxyhydrogen fumigation applied to an instrumented Ricardo E6 engine running on diesel fuel. This analysis, necessary for developing a new predictive combustion model, was calibrated with experimental data in the Gamma Technologies Suite (GTS) simulator. The results show four main effects when increasing the oxyhydrogen flow rate from 0 to 2.8 L per minute (LPM), at an indicated mean effective pressure (IMEP) of 5.3 bar and a speed of 1500 RPM: (I) NOx levels increased by up to 6%, (II) CO2 levels decreased by 8%, (III) combustion durations remained relatively stable, and (IV) brake specific fuel consumption decreased by 8%. Overall, adding hydrogen to the intake flow of the compression-ignition engine reduced CO2 emissions and enhanced indicated thermal efficiency.
