Otunuya Obodeh

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Experimental study on the effects of kerosene-doped gasoline on gasoline-powered engine performance characteristics

Journal of Petroleum and Gas Engineering, Jun 30, 2010

This investigation was carried out to study the engine-out emissions from a four-stroke, four-cyl... more This investigation was carried out to study the engine-out emissions from a four-stroke, four-cylinder, water-cooled spark ignition (SI) engine with kerosene blended gasoline with different proportions of kerosene ranging from 0-50% by volume in step of 10%. Gaseous exhaust emissions were measured with the aid of pocket gas TM-portable gas analyzer. The experimental results showed that the engine-out emissions increase with increase concentration of kerosene in the blend. The analyses gave increase ranging from 21.7-53% for carbon monoxide (CO), 23.4-57.1% for unburnt hydrocarbon (HC) and 2.4-8.2% for particulate matter (PM). The experiment also showed increase in specific fuel consumption (SFC) for all load conditions ranging form 34-36%. Measures needed to reduce fuel adulteration were suggested. The measures encompass effective monitoring mechanism and enforcement of heavy penalty on sale of adulterated fuels.

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Improving the Performance of Two-stroke Motorcycle with Tuned Adjustable Exhaust Pipe

Engine performance is strongly dependent on gas dynamic phenomena in intake and exhaustsystems. C... more Engine performance is strongly dependent on gas dynamic phenomena in intake and exhaustsystems. Careful design of the manifolds enables the engineer to manipulate the characteristics. The basicexhaust tuning mechanisms was described w ith respect to a two-stroke single-cylinder engine. Tuned adjustableexhaust pipe for use on two-stroke motorcycle was designed and tested. The dynamometer used incorporateda flywheel of appropriate moment of inertia to simulate the mass of the motorcycle and rider. The test procedureinvolved measurement of the flywheel speed during an acceleration phase resulting from opening the throttle.Calculation of the instantaneous flywheel acceleration gave a measure of the torque and power characteristics.The airflow based values of delivery ratio; trapping efficiency and charging efficiency were not measureddirectly but were culled from the fuel flow values and the Spindt computation of the exhaust gas analysis.Experimental test results were presented for powe...

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Performance Indicators for Sapele Thermal Power Station, Nigeria: 1997-2006

Advanced Materials Research, 2011

... Station Capacity [MW] 1. Gbarain,Bayelsa 225 2. Ihoubor, Edo 451 3. Omoku, Rivers 230 4. Sape... more

Investigation of emission from diesel engine fuelled with diesel-kerosene blend

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