تاثير مخلوط هاي مختلف بيوديزل توليدي از روغن منداب (Eruca sative) و گازوئيل بر عملكرد يك موتور ديزل

چكيده انگليسي :

Effect of Various Mixtures of Biodiesel Produced from Eruca Sativa Oil and Gasoline on a Diesel Engine Performance Rasool Kochaki R kochaki@ag iut ac ir March 15 2015 Department of Agricultural Machinery Engineering Isfahan University of Technology Isfahan 8415683111 IranDegree M Sc Language FarsiSupervisor Morteza Sadeghi sadeghimor@cc iut ac irABSTRACTIncreasing concerns about continuous decline in non renewable energy from petroleum resources fluctuations in oil and its related fuels prices greenhouse gas emissions as well as increasing energydemand in the world investigation on other sources of energy is of great importance Among thesesources bio fuels such as biodiesel biogas and ethanol are important ones In terms of optimum usage ofenergy and its structural modification which is an important index of sustainable development in eachcountry being independent to a particular type of energy i e using different types of energy in theconsumption fuel basket is essential Currently diesel engines are as an essential part of providing drivingforce for the road and off the road vehicles However these engines are one of the major consumers offossil fuel and are considered as one of the most important factors of noise and environmental pollutions Due to the exhaust gas quality low pollution the stability and biodegradable potential biodiesel isconsidered as a perfect alternative for diesel fuel in the world Eruca Sativa from Brassica family is anative Iranian oil seed which can grow in poor areas and has been known for centuries in Iran Extractedoil from the seeds of this plant is capable of producing biodiesel This study was aimed to study on a Forddiesel engine performance that uses the various volumetric ratio of the biodiesel produced from ErucaSativa oil seeds to the conventional gasoline #2 B0 B5 B10 B15 B20 B25 B35 B50 B75 B100 In thisregard the studied parameters were power torque and fuel consumption under full load condition atrotational speed range of 1500 to 4800 rpm with increment of 500 rpm Also the emission values ofpollutants at the speeds of 2500 3500 and 4500 rpm was investigated Moreover the engine heat balanceand distributing manner of the released thermal energy from different fuel blends at both speeds of 2500and 4000 rpm under part loads of 25 50 and 75 and full load 100 were studied Results showedthat by adding up to 15 of volumetric ratio of the biodiesel to the gasoline the engine torque and powerslightly improved and the maximum increase in the torque 1 69 occurred for B15 But for mixtureswith more than 15 volumetric ratio the engine torque decreased and the maximum reduction occurredfor B35 Application of B5 B10 and B15 reduced the brake specific fuel consumption and B5 with areduction of 11 75 in fuel consumption showed the most desirable condition Other fuel blendsincreased the brake specific fuel consumption and B35 with 41 71 showed the highest increase Exceptfor full load 100 at both rotational speeds of 2500 and 4000 rpm the exhaust gas temperaturedecreased as the percentage of biodiesel in the fuel mixture increased At all speeds emission ofpollutants including CO CO2 and NOx in the fuels containing biodiesel were less than the correspondingvalues for pure gasoline The amount of unburned hydrocarbons UHC increased as the percentage ofbiodiesel in the mixture increased Engine heat balance revealed that under part load of 50 the share ofengine brake power from total fuel thermal power for different blends were averagely about 28 and25 at speeds of 2500 and 4000 rpm respectively Exhaust losses was about 16 on average for bothspeeds and cooling system losses were averagely about 48 and 38 at speeds of 2500 and 4000 rpm respectively Under part load of 75 for various mixtures on average the engine brake power portionfrom fuel heat power were about 30 and 28 and cooling system losses portion were 41 and 33 atspeeds of 2500 and 4000 rpm respectively In this case the exhaust losses were about 18 and 17 a

كوچكي، رسول

تاثير مخلوط هاي مختلف بيوديزل توليدي از روغن منداب (Eruca sative) و گازوئيل بر عملكرد يك موتور ديزل

انتشار آلاينده ها , موازنه گرمايي