Effect of fuel injection pressure on the diesel engine fuelled with Moringa oleifera oil biodiesel blends: vibration and
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Effect of fuel injection pressure on the diesel engine fuelled with Moringa oleifera oil biodiesel blends: vibration and noise study S. Jaikumar1
· V. Srinivas1 · M. Rajasekhar1 · B. S. N. Murthy1
Received: 19 July 2020 / Revised: 24 August 2020 / Accepted: 9 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The purpose of the present study is to estimate the vibration and noise intensity of a single-cylinder direct injection diesel engine. The experiment was performed by varying the fuel injection pressures (FIP) such as 200 bar, 220 bar, and 240 bar respectively with four test fuel samples of Moringa oleifera oil biodiesel blends; BD0D100, BD10D90, BD20D80, and BD30D70. The intensity of vibration and noise has come down with the blends of Moringa oleifera biodiesel than regular diesel fuel (BD0D100). Besides, the increase in FIP looked at lower levels of vibration and noise disregarding fuel blends. Both the vibration and noise intensity was seen least with the BD20D80 fuel blend than leftover samples. The slightest RMS velocity and RMS noise were seen by 0.104 m/s and 39.71 dB correspondingly for BD20D80 than ordinary diesel at a FIP of 240 bar. Hence, the compression ignition engine can be operated with the BD20D80 fuel blend devoid of any amendment in the engine for the inferior vibration and noise. Keywords Biodiesel blends · Moringa oleifera · Noise · RMS velocity · Root mean square
Abbreviations
1 Introduction
BD0D100 BD10D90 BD20D80 BD30D70 CI ASTM ADC LDV RMS CR FFT FIP dB KOH
In the recent scenario, the researchers look for effective and economical renewable energy sources in the energy sectors. Several investigations have proved that the usage of biodiesel and sustainable energy sources is the greatest alternative to minimize the usage of fossil fuels thereby lessening the harmful greenhouse gases [1, 2]. Biodiesel can be easily extracted from vegetable oils, animal fats, used cooking oils, etc. Direct use of vegetable oils in the CI engine may encounter difficulty due to its higher viscosity. Free fatty acids present in vegetable oils may constrain the methyl ester alteration of biodiesel; these oils must undertake the transesterification process to reduce its viscosity levels [3–7]. In the compression ignition engine, the foremost source of vibration is due to rotating and reciprocating motions of the engine along with the combustion of fuels in the combustion chamber. Thus, the durability and wear of the engine parts perhaps affected due to enhanced vibration [8, 9]. The promising outcome of the biodiesel blends is the smooth combustion process without abrupt vibration in the engine parts. The biodiesel has predominant combustion efficacy than ordinary diesel by virtue of its improved cetane number. Hence, the degree of vibration and noise possibly minimize with biodiesel blends [10, 11]. The vibration signals from
B 1
Clean biodiesel 10% biodiesel in clean diesel 20% biodiesel in clean diesel 30% biodiesel in clean diesel Compression ignition American stan
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