Faculty Publications
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Item 6 CTA 8.3 G1-1 Cummins engine performance & exhaust emission tests using methyl ester Mahua oil and diesel fuel blends(2008) Godiganur, S.; Reddy, R.P.; Murthy, C.H.S.A Cummins 6 CTA 8.3G1-1 turbocharged DI diesel engine was fueled with blends of esters of Mahua oil and the performance and emissions were compared with diesel. The neat biodiesel, 10%, 20%, 40%, 60%, 80%, and base fuel were tested at constant load (28% of rated load) and at constant speed of 1500 rpm. This experiment is conducted on D.G Set, used to supply power to mining equipments in MSPL Iron Ore Company Hospet. Dist. Bellary. The objective of this study was to evaluate the impact of various blends of biodiesel on engine performance and emissions. Neat Mahua oil poses some problems when subjected to prolonged usage in CI engine. These problems can be reduced to minimum by subjecting the Mahua oil to the process of transesterification. Various properties of the biodiesel thus developed are evaluated and compared in relation to that of conventional diesel oil. Copyright © Enviromedia.Item 6BTA 5.9 G2-1 Cummins engine performance and emission tests using methyl ester mahua (Madhuca indica) oil/diesel blends(2009) Godiganur, S.; Suryanarayana Murthy, C.H.; Reddy, R.P.Neat mahua oil poses some problems when subjected to prolonged usage in CI engine. The transesterification of mahua oil can reduce these problems. The use of biodiesel fuel as substitute for conventional petroleum fuel in heavy-duty diesel engine is receiving an increasing amount of attention. This interest is based on the properties of bio-diesel including the fact that it is produced from a renewable resource, its biodegradability and potential to exhaust emissions. A Cummins 6BTA 5.9 G2- 1, 158 HP rated power, turbocharged, DI, water cooled diesel engine was run on diesel, methyl ester of mahua oil and its blends at constant speed of 1500 rpm under variable load conditions. The volumetric blending ratios of biodiesel with conventional diesel fuel were set at 0, 20, 40, 60, and 100. Engine performance (brake specific fuel consumption, brake specific energy consumption, thermal efficiency and exhaust gas temperature) and emissions (CO, HC and NOx) were measured to evaluate and compute the behavior of the diesel engine running on biodiesel. The results indicate that with the increase of biodiesel in the blends CO, HC reduces significantly, fuel consumption and NOx emission of biodiesel increases slightly compared with diesel. Brake specific energy consumption decreases and thermal efficiency of engine slightly increases when operating on 20% biodiesel than that operating on diesel. © 2008 Elsevier Ltd. All rights reserved.Item The effect of karanja oil methyl ester on Kirloskar HA394DI diesel engine performance and exhaust emissions(Serbian Society of Heat Transfer Engineers, 2010) Godiganur, S.; Suryanarayana Murthy, Ch.; Reddy, R.P.Biofuels are being investigated as potential substitutes for current high pollutant fuels obtained from the conventional sources. The primary problem associated with using straight vegetable oil as fuel in a compression ignition engine is caused by viscosity. The process of transesterifiction of vegetable oil with methyl alcohol provides a significant reduction in viscosity, thereby enhancing the physical properties of vegetable oil. The Kirloskar HA394 compression ignition, multi cylinder diesel engine does not require any modification to replace diesel by karanja methyl ester. Biodiesel can be used in its pure form or can be blended with diesel to form different blends. The purpose of this research was to evaluate the potential of karanja oil methyl ester and its blend with diesel from 20% to 80% by volume. Engine performance and exhaust emissions were investigated and compared with the ordinary diesel fuel in a diesel engine. The experimental results show that the engine power of the mixture is closed to the values obtained from diesel fuel and the amounts of exhaust emissions are lower than those of diesel fuel. Hence, it is seen that the blend of karanja ester and diesel fuel can be used as an alternative successfully in a diesel engine without any modification and in terms of emission parameters; it is an environmental friendly fuel.Item Performance and emission characteristics of a Kirloskar HA394 diesel engine operated on fish oil methyl esters(2010) Godiganur, S.; Suryanarayana Murthy, Ch.; Reddy, R.P.The high viscosity of fish oil leads to problem in pumping and spray characteristics. The inefficient mixing of fish oil with air leads to incomplete combustion. The best way to use fish oil as fuel in compression ignition (CI) engines is to convert it into biodiesel. It can be used in CI engines with very little or no engine modifications. This is because it has properties similar to mineral diesel. Combustion tests for methyl ester of fish oil and its blends with diesel fuel were performed in a kirloskar H394 DI diesel engine, to evaluate fish biodiesel as an alternative fuel for diesel engine, at constant speed of 1500 rpm under variable load conditions. The tests showed no major deviations in diesel engine's combustion as well as no significant changes in the engine performance and reduction of main noxious emissions with the exception on NOx. Overall fish biodiesel showed good combustion properties and environmental benefits. © 2009 Elsevier Ltd. All rights reserved.Item Acetone and Diethyl ether: Improve cold flow properties of Dairy Washed Milkscum biodiesel(Elsevier Ltd, 2019) Srikanth, H.V.; Venkatesh, J.; Godiganur, S.; Manne, B.The trend in utilizing biological industrial wastes to produce biofuels has been increasingly popular over the past decades. The dairy washed milk scum (DWMS) is one of such potential industrial waste, which can be used as feedstock for the production of biodiesel. One of the inherent problems of DWMS biodiesel is its poor low temperature properties. In this investigation, the influence of two solvents namely, Acetone (ACE) and Diethyl ether (DEE) was tested as cold flow improvers (CFI's) on low temperature properties of DWMS biodiesel. It was observed that the addition of 20% (v/v) of ACE and DEE to DWMS biodiesel improved the low temperature properties. The crystallization characteristics of biodiesel and its blends with CFIs were determined using differential scanning calorimetry (DSC). Other fuel properties were within the permissible limits of biodiesel standard (ASTM D6751-15C) with all the blends of ACE and DEE. © 2018 Elsevier LtdItem Combustion, performance, and emission characteristics of dairy-washed milk scum biodiesel in a dual cylinder compression ignition engine(Taylor and Francis Inc. 325 Chestnut St, Suite 800 Philadelphia PA 19106, 2020) Srikanth, H.V.; Venkatesh, J.; Godiganur, S.; Manne, B.; Bharath Kumar, S.; Spurthy, S.The present work has been carried out to study the suitability of milk dairy waste scum (MDWS) biodiesel as a fuel for diesel engine. The investigations were carried out on performance, emission and combustion characteristics of a direct injection dual cylinder diesel engine fueled with MDWS methyl ester, and their blends. Two-step transesterification process was used to synthesize the MDWS biodiesel, characterization according to specified ASTM D6751-15C standards. The performance characteristics studies showed an increased brake thermal efficiency of B20 (3%) and B30 (0.94%) blends in comparison to fossil diesel. However, the increased brake specific fuel consumption (BSFC) was also found with all the fuel blends and an higher (9%) BSFC was obtained with B50 compared to diesel fuel at full load condition. The emissions of blends were found to be lower in comparison with diesel fuel, except for nitrogen oxides. A 32% increase in NOx emission was found with B50 blend compared to diesel fuel at maximum load condition. However, improved combustion characteristics would found with MDWS blends with respect to in-cylinder pressure, ignition delay, and heat release rate compared to fossil diesel. © 2019 Taylor & Francis Group, LLC.