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Dhanapal B.,Veltech Multitech Drranagarajan Drsagunthala Engineering College | Palani S.,Veltech Multitech Drranagarajan Drsagunthala Engineering College | Dharmaraj V.,Veltech Multitech Drranagarajan Drsagunthala Engineering College | Jawahar M.K.,Veltech Multitech Drranagarajan Drsagunthala Engineering College
International Journal of Applied Environmental Sciences | Year: 2013

This paper investigates the effect of using unleaded gasoline and additives blends (Ethanol blends and Isobutanol-Ethanol blends) on spark ignition engine (SI engine) performance and exhaust emission.The engine used for experimental purpose is Bajaj engine of 5.2 kW (7.2hp). A new multiliquid fuel mixing system has been developed for perfect mixing and hence found better for investigating effects of various ethanol fuel blends(E10,E20,E30) and isobutanol and ethanol-gasoline mixture(E10B2.5,E10B5,E10B7.5). Performance tests were conducted for fuel consumption, volumetric efficiency, brake thermal efficiency, brake power, engine torque and brake specific fuel consumption, while exhaust emissions were analysed for carbon monoxide (CO), Hydrocarbon (HC), and Oxides of nitrogen (NOx) using unleaded gasoline and additives blends with different percentages of fuel at varying engine torque condition and constant engine speed. The result showed that blending unleaded gasoline with additives increases the brake power, volumetric and brake thermal efficiencies and fuel consumption. The CO and HC emissions concentrations in the engine exhaust decreases while the NOx concentration increases. The addition of 5% isobutanol and 10% ethanol to gasoline gave the best results for all measured parameters at all engine torque values. © Research India Publications. Source

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