PERFORMANCE AND EMISSIONS CHARACHERISTICS OF N-PENTANOL MIXED WITH PREMUIM MOTOR SPIRIT AND CAMPHOR BLEND IN SPARK IGNITION ENGINE

Abstract

In this research, pentanol and camphor blended with petrol in different proportions were used on spark-ignition engines to check the performance, characteristics, and emissions of the engine. Sample P0B (gasoline fuel with 5g of camphor) shows the best physicochemical properties as compared to P0A which is petrol, having a value of 1.2 poise, 54°C, 58°C, and 1.8% for specific gravity, viscosity, flash point, fire point, and iodine value respectively. Furthermore, Sample P0A (gasoline) shows the best specific fuel consumption for the lower torque (3Nm) with a value of 19.2Kg/kWh, and sample P0B (100% of pure gasoline and 5% camphor) has the best fuel consumption for the higher torque (6Nm) with a value of 12.9Kg/Kwh. For brake thermal efficiency, sample P0B gives the best brake thermal efficiency at the two-constant torque with a value of 0.34 for torque 3Nm and 0.65 for torque 6Nm respectively. Sample P15A (85% of gasoline and 15% of pentanol) gives the best BMEP at torque 3Nm with a value of 1.97bar and sample P5C (95% of gasoline and15% of pentanol) gives the best BMEP at 6Nm with a value of 3.87 bar. Exhaust emissions were analyzed for unburned hydrocarbon (HC), carbon-monoxide (CO), and carbon dioxide (CO2). The results showed that increasing the pentanol blending percentage reduces the engine emission of Hydrocarbons (HC) and Carbon monoxide (CO) emission. HC and CO emissions were found to be lowest at sample P15A (85% of gasoline and 15% of pentanol) for torque 3Nm with a value of 0.12 and at torque 6Nm, the sample with the lowest percentage was P15A with a 0.2%.