EXPERIMENTAL EVALUATION OF AN SI ENGINE USING E10 EQUIVALENT TERNARY GASOLINE- ALCOHOL BLENDS

摘要

Ethanol can be used as an alternate fuel in internal combustion engines. But extensive usage of ethanol is restricted because of its biomass limit. On the other hand methanol can be obtained from different bio-resources and has the potential to be used in engines. To limit the usage of ethanol, a model ofternary blends of Gasoline, Ethanol and Methanol (GEM) has been formulated equivalent to binary blend of Gasoline and Ethanol. The prepared ternary blends have identical Air Fuel ratio, Lower heating value and Octane number as binary blend. In the present work the influence of GEM blends in single cylinder, four stroke, and port fuel injection SI engine in terms of performance and emission parameters have been studied experimentally. The tests were conducted at constant engine torque of 7.5 Nm and vary the engine speeds from 1700 to 3300 rpm. The measured performance and emission values of binary blend E10 (G 90 E 10) and ternary blends E10_B1 (G 91.65 E 5 M 3.35), E10_B2 (G 92.5 E 2.5 M 5) were compared with pure gasoline, G. The results show that GEM blends have similar performance characteristics as binary blends and better compared to pure gasoline. Also exhaust emissions such as Carbon monoxide (CO), unburned hydrocarbons (HC) shows decreased values for binary and ternary blends compared to pure gasoline due to oxygenated nature of alcohol blended fuels.