An Exhaust Emission Characteristics in a Spark Ignition Engine Fueled by Petrol-Snot Apple (Azanza garckeana) Bioethanol Blends

Mechanical Engineering (Energy)

Energy is an essential ingredient for socio economic development and hence, is a true indicator for economic growth. However, the world relies heavily on fossil fuels to meet its energy requirements of which in the near future it will be exhausted as well as environmental pollution, necessitates the need for alternative source of fuel, hence the need for bioethanol production. In this study, bio-ethanol derived from Azanza grakeana was produced by fermentation method. The physico-chemical and were determined using standard laboratory methods. The blended fuel samples were; PE2, PE4, PE6, PE8, PE10, PE12 and PE14 respectively. The engine performance and exhaust gas analysis were also conducted to investigate the effect of bio-ethanol as petrol fuel extender, with a TD110-115 single cylinder, four stroke and air-cooled, spark ignition engine test rig, under different loading conditions, and incorporated in with an SV-SQ automobile exhaust gas analyzer monitor and measure concentration of gaseous emissions such as; unburned hydrocarbon (HC), carbon monoxide (CO), and carbon dioxide (CO2) from the engine tailpipe. The result shows that there was appreciable decrease in HC and CO, emissions were recorded for all blended fuel samples than petrol- with the least CO and HC emission levels observed for PE14 fuel samples of 97.5% and 23.2% respectively. For reasons of its satisfactory engine performance behavior, petrol fuel conservation advantages, and inherent greenhouse gas mitigation potentials, the candidacy of Azanza garckeana bio-ethanol and gasoline blends, offer a promise of a prospective fuel source for spark ignition engines.

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