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This work aims to experimentally investigate an effect of Spiritus and Pertalite blend on engine's performance (brake horsepower and torque, specific fuel consumption rate, and exhaust gas emission). The tests are conducted at 3000-7000 rpm for four different fuels, i.e., pertalite, 95%P-5%S, 90%P-10%S, and 85%P-15%S to obtain an optimum ratio of the Pertalite-Spiritus blend. The blend ratios of Pertalite (P) and Spiritus (S) are measured by volume. The result shows that addition of 15% Spiritus (by volume) on Pertalilte can enhance the combustion process of the blend hence increasing engine's brake horsepower and decreasing specific fuel consumption rate. However, engine's torque is lower when using the blend 85%P-15%S if compared with using Pertalite.

Effect of Pertalite-Spiritus Blend Fuel on Performance of Single Cylinder Spark Ignition Engine