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Effect of Different Geometrical Changes in the Intake Manifold of a DI Diesel Engine Fueled with Biodiesel-Diesel Blends

NIT Rourkela, India-Niklesh P. Reddy, Naseem Khayum
JNTU, Anantapur-Devendra Uppara
  • Technical Paper
  • 2020-01-0346
To be published on 2020-04-14 by SAE International in United States
One of the major challenges of biodiesel run diesel engines is poor mixture formation. This problem can be overcome by inducing the turbulence into the engine cylinder, thereby a proper mixing of air-fuel occurs. In this study, an attempt was made to assess the engine behavior in terms of its combustion, performance and emission characteristics by replacing the normal intake manifold with the internally buttress threaded manifold, which is designated as IBTM throughout the manuscript. This investigation was further carried out to run the engine with suitable blends such as WCOME10 (10% of WCOME + 90% diesel) and WCOME20 (20% of WCOME + 80% diesel). Based on the results obtained in this study, IBTM exhibits a higher BTE of about by 2.8% for WCOME20-b than that of diesel operation (at normal intake). At the same time, the carbon monoxide (CO), hydrocarbon (HC) and smoke emissions were decreased by about 1%, 30.3%, and 20.4% respectively, whereas, NOx emissions were increased by about 21.9% for IBTM run on same blend (WCOME20-b) on compared to the normal intake…
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Impact of Fuel Injection Pressure on Performance and Emission Characteristics of a Diesel Engine Fueled With Jatropha Methyl Ester Tyre Pyrolysis Blend

NIT Rourkela, India-Abhishek Sharma, Murugan Sivalingam
Published 2014-10-13 by SAE International in United States
In this study, the effects of fuel injection pressure on the performance and exhaust emission characteristics of a single cylinder, constant speed, direct injection diesel engine have been investigated and compared with diesel. The engine fueled with Jatropha methyl ester (JME)-Tyre pyrolysis oil (TPO) blend (JME 80%+TPO 20% on a volume basis), was run at five different fuel injection pressures (210, 220, 230, 240, and 250 bar) in addition to original injection pressure of 200 bar. The results confirmed that the injection pressure up to 220 bar gave better results for the JMETPO20 blend in terms of performance and emission characteristics compared to those of original injection pressure and also 230, 240 and 250 bar. At 220 bar injection pressure, for the JMETPO20 blend the brake thermal efficiency was higher by about 5.12%, and the hydrocarbon and carbon monoxide emissions were lower by about 1.75% and 6.2% respectively compared to original injection pressure at full load. The smoke opacity was lower for the JMETPO20 blend at full load by about 9.5% at 220 bar compared…
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Experimental Analysis of Diesel Engine Fueled with E-Diesel Produced from Madhuca Indica Flowers with the Addition of an Ignition Improver

NIT Rourkela, India-Dulari Hansdah, Bhagyashree Suna, Murugan Sivalingam
Published 2013-04-08 by SAE International in United States
Experimental investigations were carried out to study the effect of the addition of an ignition improver with a bioethanol diesel emulsion, on the performance and emission behavior of a single-cylinder, 4-stroke, air-cooled, direct-injection (DI) diesel engine, with a rated power of 4.4 kW at a constant speed of 1500 rpm. Bioethanol was produced from the madhuca indica flower, which is proposed as a new feed stock. 15% bioethanol was emulsified with 84% diesel on a volume basis with the help of a surfactant of 1% to get the emulsion named as BDE15. The ignition improver used in the experimentation was diethyl ether (DEE) whose cetane number is greater than 125. 1% and 2% of DEE was added to the bioethanol diesel emulsion named as BDE+DEE1% and BDE+DEE2% respectively. The performance and emission results of the engine fueled with BDE15, with BDE+DEE1% and BDE+DEE2% were compared with those of diesel operation, and are presented in the paper. The results showed that BDE15 with or without the ignition improver, showed a lower thermal efficiency and higher brake…
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Performance and Emission Studies of a Diesel Engine Fueled with Wood Pyrolysis Oil-Biodiesel Emulsions

NIT Rourkela, India-Prakash Ramakrishnan, Raghubansha Kumar Singh, Murugan Sivalingam
Published 2012-04-16 by SAE International in United States
Wood pyrolysis oil (WPO) is considered as an alternative fuel for compression ignition engines. But, due to its poor combustion characteristics, it requires significant modification in the fuel to solve problems like miscibility, presence of water content etc, when it is used as an alternative fuel in compression ignition engines. In this study, an attempt is made to use wood pyrolysis oil-bio diesel emulsions in a diesel engine. Three emulsions of WPO and Jatropha methyl ester (JME) were obtained with the help of a surfactant, and used as fuels in a single cylinder, four stroke, air cooled, direct injection diesel engine. The emulsions were designated as WPO5, WPO10 and WPO15 where the numeric value indicates the percentage of the WPO in the emulsion. The performance and emission characteristics of the engine were obtained, analysed, and compared with those of diesel fuel and presented in this paper. The emulsions made with WPO15 show an improved performance and lower emissions than WPO5 and WPO10. Compared to diesel at full load, 11.3% higher brake thermal efficiency was achieved…
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