Resumo

MANTILLA GONZALEZ, Juan Miguel; AGUIRRE JUNCO, Borys Javier  e  SARMIENTO PINILLA, Luis Andres. Experimental evaluation of a spark-ignited engine using biogas as fuel. Ing. Investig. [online]. 2008, vol.28, n.2, pp.131-141. ISSN 0120-5609.

Different CH₄ and CO₂ mixtures were used as fuel in this work; they were fed into a spark-ignited engine equipped with devices allowing spark advance, gas delivery and gas consumption to be measured. Engine bench-tests revealed changes in the main operation parameters and emissions. The results showed that increasing CO₂ percentage in the mixture increased the spark angle, reduced maximum power and torque and reduced exhaust emissions (by 90% in some cases) when DAMA resolution 1015/2005 was applied. The main components to be considered when an engine of this type operates with gas fuel were also recognised.

Palavras-chave : biogas; emission; gaseous fuel; internal combustion engine; methane.

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