Estudio del empleo de un convertidor catalítico para las emisiones gaseosas en un motor de ignición por chispa usando etanol como combustible. // Study of the employment of a catalytic convertor for the gassy emissions in an spark ignition engine using et

Authors

  • K. C. R. Martins Centro Federal de Educação Tecnológica do Maranhão (CEFET-MA). Departamento de Metal Mecânica. Avenida Getulio Vargas, n.04 Monte Castelo, son Luis, Maranhão. Brasil. Tel. (55)(98) 218 9044.
  • F. Soto Pau Instituto Superior Politécnico José Antonio Echeverría (ISPJAE). Facultad de Ingeniería Mecánica. Departamento de Ingeniería del Transporte. Calle 116 s/n, CUJAE, Marianao 15, Ciudad de la Habana, Cuba. Telf. (537) 260 7731.
  • J. A. Silva Universidade Federal de son João del Rey. Pça Frei Orlando, 170, son João del Rey, Minas Gerais. Brasil. Tel: (55)(32) 3379 2617 – 2619.
  • A. M. dos Santos Escola de Engenharia de son Carlos - USP. Av.Trabalhador Sãocarlense N 400, son Carlos, son Paulo. Brasil. Tel: (55)(16) 273 9414, FAX: (55)(16) 273 9402
  • R. F. E. Santos Escola de Engenharia de son Carlos - USP. Av.Trabalhador Sãocarlense N 400, son Carlos, son Paulo. Brasil. Tel: (55)(16) 273 9414, FAX: (55)(16) 273 9402

Abstract

Con este trabajo de investigación se estudia el índice de emisiones gaseosas en un motor de ignición por chispa movido con
etanol y se analiza el control de estas emisiones con aplicación de un convertidor catalítico platino/paladio (Pt/Pd) en el
sistema de descarga del motor. Fueron realizados ensayos dinamométricos de un motor de combustión interna MCI para
analizar las emisiones y el control de estas, en condiciones operacionales, en función de la rotación y ángulo de avance de
ignición. El convertidor catalítico alcanzó un 75% de eficiencia cuando el ángulo de avance de ignición del motor aumentó
para 16o. Se observó que en rotaciones de 2000 r.p.m el convertidor catalítico presentó mayor reducción de las emisiones
de hidrocarburos no quemados HC, monóxido de carbono CO y óxidos de nitrógeno NOx. Con la aplicación de un
convertidor catalítico en un vehículo se debe estandarizar nuevas regulaciones en cuanto al ángulo de avance de ignición
para optimizar el funcionamiento del motor.


Palabras claves: Convertidor catalítico; emisiones de escape; eficiencia catalítica; etanol.

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Summary.
With this investigation work the index of gassy emissions is studied in an spark ignition engine using ethanol, the control of
these emissions is analyzed with application of a platinum/palladium (Pt/Pd) catalytic convector in the engine discharge
system. Rehearsals carried out in engines in order to analyze the emissions and the control of these, under operational
conditions, in function of the rotation and angle of ignition advance were carried out. The catalytic convector reaches 75%
of efficiency when the ignition advance angle of the engine increased to 16o. It was observed that in rotations of 2000
r.p.m the catalytic convector presented bigger reduction of the emissions of non-burnt hydrocarbons HC, monoxide of
carbon CO and nitrogen oxides NOx. With the application of a catalytic convector in a vehicle should be standardized new
regulations for the ignition advance angle in oreder to optimize the motor operation.


Key words: Catalytic convector; escape emissions; catalytic efficiency; ethanol.

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How to Cite

1.
C. R. Martins K, Soto Pau F, A. Silva J, M. dos Santos A, F. E. Santos R. Estudio del empleo de un convertidor catalítico para las emisiones gaseosas en un motor de ignición por chispa usando etanol como combustible. // Study of the employment of a catalytic convertor for the gassy emissions in an spark ignition engine using et. Ing. Mec. [Internet]. 2005 Jan. 1 [cited 2025 Sep. 13];8(1):39-46. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/175

Issue

Vol. 8 No. 1 (2005): january-april

Section

Original article

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