An experimental and ANNs study of the effects of safflower oil biodiesel on engine performance and exhaust emissions in a ci engine

In this study, the effects of diesel fuel-biodiesel (produced from safflower oil) blends on engine performance and exhaust emissions were investigated as experimentally in a single cylinder, fourcycle, normal aspirated diesel engine. In the results of tests, engine torque, engine power and specific fuel consumption as performance values of test fuels were commentated. Values of engine torque and engine power from biodiesel were lower than diesel fuel fuel as average 26% amount, and values of specific fuel consumption from biodiesel were higher than diesel fuel as average 41.5% amount. CO emission values of biodiesel decreased as average 74% amount according to diesel fuel. With using biodiesel, increased as average 2.45 fold amount for CO2 emissions, as average 1.3 fold amount for NO emissions, and decreased as average 87% amount for HC emissions with compared to diesel fuel. The obtained values were estimated for different inputs by using the ANNs model. The data obtained from the ANNs is very close to the experimental data...

Biodiesel production from animal fat-palm oil blend and performance analysis of its effects on a single cylinder diesel engine

Nowadays, the decrease in fossil based energy reserves and their negative impact on the environment have increased the interest in alternative energy sources. Vegetable oils and animal fats are used as alternatives of fuels that are used in diesel engines. High viscosity of vegetable oils and animal fats cause several problems in diesel engines. Methods such as dilution, pyrolysis, and transesterification are utilized to eliminate these problems. In this study, using transesterification method, biodiesel is produced from 30% animal fat 70% palm oil blend which has a substantial potential for being an alternative fuel for diesel engines. The impact of biodiesel on engine performance and exhaust emissions are investigated on a single cylinder, air cooled, pre-combustion chamber diesel engine. Engine performance values of biodiesel are obtained close to those values of diesel fuel. A decrease in CO emission and a slight increase in NO x emission are observed. Following the experimental results, it is concluded that biodiesel produced from 30% animal fat and 70% palm oil could be used as an alternative fuel for diesel engine. Moreover, the positive impacts of biodiesel on environment in terms of exhaust emissions also increase its potential of being an alternative fuel. © Sila Science

Effect of cetane improver addition into diesel fuel methanol mixtures on performance and emissions at different ınjection pressures

WOS: 000397838500016In this study, methanol in ratios of 5-10-15% were incorporated into diesel fuel with the aim of reducing harmful exhaust gasses of Diesel engine, di-tertbutyl peroxide as cetane improver in a ratio of 1% was added into mixture fuels in order to reduce negative effects of methanol on engine pelformance parameters, and isobutanol of a ratio of 1% was used as additive for preventing phase separation of all mixtures: results of experiments conducted on a single cylinder and direct injection Diesel engine, methanol caused the increase of NOx emission while reducing CO, HC, CO2, and smoke opacity emissions. It also reduced torque and power values, and increased brake specific fuel consumption values. Cetane improver increased torque and power values slightly compared to methanol-mixed fuels, and reduced brake specific fuel consumption values. It also affected exhaust emission values positively, excluding smoke opacity. Increase of injector injection pressure affected performances of methanol-mixed fuels positively. It also increased injection pressure and NOx emissions, while reducing other exhaust emissions.Scientific Research Projects Coordination Unit of Selcuk University [11201057]This study was supported by the grants from Scientific Research Projects Coordination Unit of Selcuk University (Project No: 11201057)

The effect on vehicle performance and exhaust emissions of gasoline – ethanol blend which is high ethanol rate

Örs, İlker (Aksaray, Yazar)In this study, the effects of blending gasoline and ethanol which will probably be consumed as an alternative for gasoline in the future on wheel power, CO, HC, NOx and CO2 emissions were examined at spark ignition engines, at vehicles with electronic ignition system and injection fuel system. As fuel, gasoline-ethanol blend with a %85 ethanol were used. According to the results of the experiment, wheel power was decreased. Fuel consumption was increased. In case exhaust emissions, CO, CO2 and NOx emissions were decreased, HC emission was increased...

Performance, emission, and combustion analysis of a compression ignition engine using biofuel blends

This study aimed to investigate the effects on performance, emission, and combustion characteristics of adding biodiesel and bioethanol to diesel fuel. Diesel fuel and blend fuels were tested in a water-cooled compression ignition engine with direct injection. Test results showed that brake specific fuel consumption and volumetric efficiency increased by about 30.6% and 3.7%, respectively, with the addition of bioethanol to binary blend fuels. The results of the blend fuel's combustion analysis were similar to the diesel fuel's results. Bioethanol increased maximal in-cylinder pressure compared to biodiesel and diesel fuel at both 1400 rpm and 2800 rpm. Emissions of CO increased by an amount of about 80% for fuels containing a high level of bioethanol when compared to CO emissions for diesel fuel. Using biodiesel, NO emissions increased by an average of 31.3%, HC emissions decreased by an average of 39.25%, and smoke opacity decreased by an average of 6.5% when compared with diesel fuel. In addition, when using bioethanol, NO emissions and smoke opacity decreased by 55% and 17% on average, respectively, and HC emissions increased by an average of 53% compared with diesel fuel. © 2017 Society of Thermal Engineers of Serbia

Effects on Performance, Emission and Combustion Parameters of Addition Biodiesel and Bioethanol into Diesel Fuel

In this study, safflower based biodiesel produced in the pilot plant were blended with certainamounts of diesel fuel and bioethanol from sugar beet. Diesel fuel and the blends were testedin a direct injection diesel engine and engine performance, combustion and exhaust emissioncharacteristics were investigated. According to test results, the brake specific fuel consumptionsof biodiesel blend were about 8.51% higher than diesel fuel. Bioethanol is increased brakespecific fuel consumptions values up to 26.77%. The maximum cylinder gas pressure ofbiodiesel blend was about 0.46% higher than that of diesel fuel on average. This value wasdecreased about 1.75% with using of bioethanol. The exhaust emission results showed thatbiodiesel blend decreased carbon dioxide emissions and smoke opacity, while it increasednitrogen oxide emissions and exhaust gas temperature. Nitrogen oxide emissions, smokeopacity and exhaust gas temperature values were decreased with adding bioethanol, while itincreased carbon dioxide emissions

Experimental investigation of effects on performance, emissions and combustion parameters of biodiesel–diesel–butanol blends in a direct-injection CI engine

This paper aims to asses and conduct a comparative analysis of fuel properties, performance, emissions and combustion characteristics of biodiesel produced from waste cooking oil (B100) as a cheap biodiesel feedstock, along with a binary blend of biodiesel-diesel (B20) and ternary blends of biodiesel-diesel-butanol as substitutions to diesel fuel. Although biodiesel and n-butanol have some negative impacts on engine performance parameters, they generally positively affect exhaust emission parameters compared to euro diesel. B100 caused an average reduction in brake power and exhaust gas temperature of 15.16% and 1.4%, respectively, although it increased brake specific fuel consumption on average by 14.09%, at full throttle under different engine load conditions. B100 decreased CO and HC emissions and smoke opacity by 65.4%, 61.07% and 54.94%, respectively. However, CO2 and NO emissions increased by 22.3% and 23.91%, respectively. Addition of n-butanol decreased some of the fuel thermo-physical properties such as density, viscosity and flash point. The average decreases in brake power when n-butanol was added were 6.17%, 7.49% and 11%, respectively, coupled with increases in specific fuel consumption of 6.25%, 8.96% and 14.29%, respectively. The addition of n-butanol decreased exhaust gas temperatures, CO, HC, NO and smoke emissions

Investigation of Effect of n-hexane Additives in Biodiesel in Combustion and Exhaust Emissions in Diesel Engines

There are various studies concerning biodiesel fuel and its spraying, combustion and emission properties within the diesel engines. In the diesel engines, the hazardous emissions such as carbonmonoxide (CO), carbondioxide (CO2), hydrocarbon (HC) and particle matter (PM) decreased along with the use of biodiesel. But a slight increase in azotoxit (NOx) emissions was observed due to the use of biodiesel which is an oxygenated fuel. In this study; by volume 4% 12% and 20% n-hexane were added in biodiesel which produced by transesterification method from cottonseed oil. Engine tests were carried out at 6 min-1. The maximum moment obtained at 1400 min-1. The maximum increase in moment is 3.95% in CHX20 fuel, while the specific fuel consumption is reduced by 5.52%. At 1400 min-1, the maximum of cylinder pressure and heat dissipation is increased by increasing of additive ratio. As the n-hexane ratio increases, the emissions of CO, HC and smoke decrease while NOx emissions increaseThere are various studies concerning biodiesel fuel and its spraying, combustion and emission properties within the diesel engines. In the diesel engines, the hazardous emissions such as carbonmonoxide (CO), carbondioxide (CO2), hydrocarbon (HC) and particle matter (PM) decreased along with the use of biodiesel. But a slight increase in azotoxit (NOx) emissions was observed due to the use of biodiesel which is an oxygenated fuel. In this study; by volume 4% 12% and 20% n-hexane were added in biodiesel which produced by transesterification method from cottonseed oil. Engine tests were carried out at 6 min-1. The maximum moment obtained at 1400 min-1. The maximum increase in moment is 3.95% in CHX20 fuel, while the specific fuel consumption is reduced by 5.52%. At 1400 min-1, the maximum of cylinder pressure and heat dissipation is increased by increasing of additive ratio. As the n-hexane ratio increases, the emissions of CO, HC and smoke decrease while NOx emissions increas

The effect on performance and exhaust emissions of adding cotton oil methyl ester to diesel fuel

Örs, İlker ( Aksaray, Yazar )In the study, engine performance and exhaust emissions of diesel fuel and cotton oil methyl ester (COME) blends at proportions of 2%, %5 and 10% (v/v) have been investigated. The engine was fuelled with COME-diesel blends and pure diesel when running the engine at six different engine speed (1000, 1200, 1400, 1600, 1800, 2000 rpm) and at full load. Test results are presented engine torque and specific fuel consumption (SCF) as engine performance, and Carbon monoxide (CO), Hydrocarbon (HC), smoke and nitrogen oxides (NOx) as exhaust emissions. As result, this study is show that although engine performance decreased with COME adding to diesel fuel, exhaust emissions was generally improved...