Abstract
This paper reviews the utilization of biogas in
spark ignition engines with a view to making a case for it as
an efficient substitute fuel for petrol. However, its gaseous
nature which accounts for its low volumetric density implies
that apart from the basic modification needed to
accommodate the fuel, the engine might need further
alterations to get the best from this relatively low cost and
readily available fuel. Various modes of enhancing
performance particularly methane enrichment, prechamber
combustion, alteration of ignition parameters, increasing
compression ratio and addition of hydrogen to improve
performance and emissions were drawn from previous works
to validate its efficiency as a viable substitute fuel in SI
engines.