Vibration and noise characteristics of CI engine fueled with Niger seed oil methyl ester blends and hydrogen

Sagari, Jaikumar; Bhatti, S. K.; Srinivas, V.; Rajasekhar, M.

doi:10.1007/s13762-019-02443-y

Cited by 20 publications

(21 citation statements)

References 24 publications

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“…In addition, the vibration intensity was increased at upper loads and attained maximum at full load as depicted in Figure 7. This was on account of enhanced rate of combustion that produced large thrust on the piston which results in higher vibrations at higher load condition [21]. The similar growing trend was observed in favor of all the test fuels regarding load and the minimum vibration intensity was observed with B20 than remaining fuel blends.…”

Section: Rms Velocitysupporting

confidence: 65%

“…Therefore, the combustion superiority attained for NSOME blends and consequently the tendency of knocking reduced. Since the major source of vibration developing from the engine was on account of knocking which was produced in consequence of inappropriate combustion [12,21]. In addition, the vibration intensity was increased at upper loads and attained maximum at full load as depicted in Figure 7.…”

Section: Rms Velocitymentioning

confidence: 99%

“…This was mainly due to the higher efficiency of combustion as a result of higher cetane number [12]. As the vibration and noise influenced by knocking and thus the engine knocking reduced with this improved combustion [21,26]. Further, the noise was noticed higher at increasing load condition on behalf of all the fuels and the better reduction in noise level was exhibited by B20 at all the load conditions.…”

Section: Rms Noisementioning

confidence: 99%

“…The results concluded that the noise levels have reduced significantly than the standard diesel. Jaikumar et al [21] examined the vibration and noise constraints of Niger seed oil biodiesel and hydrogen in dual fuel operation by varying different compression ratios. Their results revealed that the vibrations and noise were decreased with biodiesel blends and hydrogen-enriched blend as well.…”

Section: Introductionmentioning

confidence: 99%

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Emission and vibration characteristics of Niger seed oil biodiesel fueled diesel engine

Sagari¹,

Bhatti²,

Srinivas³

2019

JMES

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The present investigation dwells the experimental investigation for the assessment of emission, vibration, and noise parameters of single-cylinder, DI diesel engine functioning through the blends of conventional diesel and Niger seed oil methyl ester (NSOME) at different engine operating loads namely 25%, 50%, 75%, and 100% at a constant speed. The carbon monoxide (CO), unburnt hydrocarbons (UHC), and smoke opacity emissions have come down significantly for all the blends of NSOME namely B10, B20, and B40 while the NOx increased marginally. Besides, the vibration and noise extremity of the engine was lowered while operating with biodiesel blends as compared to conventional diesel. B20 has specified a significant reduction in emission, vibration, and noise too at all the loads range from minimum to maximum. At maximum load condition the CO, UHC, smoke opacity, root mean square (RMS) velocity, and RMS noise of B20 have reduced by 93.9%, 37.87%, 5.54%, 45.78%, and 26.15% respectively even as the NOx was increased by 12.76% compared to standard.

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Section: Rms Velocitysupporting

confidence: 65%

Section: Rms Velocitymentioning

confidence: 99%

Section: Rms Noisementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Emission and vibration characteristics of Niger seed oil biodiesel fueled diesel engine

Sagari¹,

Bhatti²,

Srinivas³

2019

JMES

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“…They concluded that the average errors of specific fuel consumption and NO x were 6% and 2%, respectively. Jaikumar et al [17] carried out an experimental investigation on the VCR diesel engine to assess the vibration and noise parameters by fuelling with Niger seed oil biodiesel and hydrogen in dual mode. They reported that the RMS velocity (vibration) and RMS noise of B20 were observed less compared to other blends.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive performance, combustion, emission, and vibration parameters assessment of diesel engine fuelled with a hybrid of niger seed oil biodiesel and hydrogen: response surface methodology approach

et al. 2020

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The present investigation centered on the application of response surface methodology to assess the engine operating parameters namely performance, combustion, emission, and vibration characteristics of variable compression ratio direct injection single-cylinder diesel engine operating with Niger seed oil methyl ester blend and hydrogen in dual fuel mode. Response surface models were developed using the experimental data of input and output variables. The fuel blend, load, compression ratio, and hydrogen flow rate were considered as input responses while the brake thermal efficiency, brake specific fuel consumption, cylinder pressure and net heat release rate, carbon monoxide (CO), unburnt hydrocarbon, Nitrogen oxides (NO x), smoke opacity, and RMS velocity respectively were considered as the output responses. The input conditions altered were: loads of 29.43 N (3 kgf), 58.86 N (6 kgf), 88.29 N (9 kgf), and 117.72 N (12 kgf), compression ratios of 16, 17.5, and 18.5, and the hydrogen flow rates of 5 lpm, 10 lpm, and 15 lpm. The output information of the test was assessed using response surface methodology (RSM) and the polynomial model (second-request) was created. The experimental values were in good match with RSM predicted values and maintained an R 2 value of more than 0.95 for all the test run combinations. Further, all the test points sustained comparatively within the 10% maximum deviation. Keywords Brake thermal efficiency • Compression ratio • Smoke opacity • Hydrogen • Cylinder pressure Abbreviations CR Compression ratio FB Fuel blend HFR Hydrogen flow rate (lpm) BTE Brake thermal efficiency (%) BSFC Brake specific fuel consumption (kg/kWhr) NSOME Niger seed oil methyl ester B20 20% NSOME in diesel CO Carbon monoxide (%) UHC Unburnt hydrocarbon (ppm) NOx Nitrogen oxides (ppm) CI Compression ignition ASTM American standards for testing materials ADC Analog to digital converter lpm Liter per minute CP Cylinder pressure (bar) NHRR Net heat release rate (J/deg.) q Net heat release rate (J/deg.) q Heat Heat transfer rate combustion chamber wall (J/deg.) V Volume change with crank angle (m 3 /deg.) p Pressure change with crank angle (bar/deg.)

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Combustion and vibration characteristics of variable compression ratio direct injection diesel engine fuelled with diesel‐biodiesel and alcohol blends

Sagari

Bhatti

Srinivas

et al. 2020

Engineering Reports

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The objective of the present investigation is to explore the influence of ternary (diesel-biodiesel-alcohol) fuel blends on the combustion and vibration parameters of a variable compression ratio compression ignition engine. Kusum seed oil biodiesel and isobutyl alcohol were blended with conventional diesel to make a ternary fuel. The blend of biodiesel-diesel (B20) was made in proportion of 20% and 80% by volume, respectively. Furthermore, isobutyl alcohol was added at diverse proportions (ie, 0.25%, 0.5%, 0.75%, and 1%). The investigation was carried at different compression ratios (CRs), namely, 16.5, 17.5, and 18.5. The study shows that, upon the addition of isobutyl alcohol, the combustion characteristics (ie, cylinder pressure [CP] and net heat release rate [NHRR]) are significantly enhanced, whereas the mechanical vibration level maintains stable. The CP and NHRR of B20+ 1% isobutyl alcohol are greatly improved for corresponding values of 4.55% and 8.39%, respectively, except for the conventional diesel at CR 18.5. Furthermore, the root mean square velocity (vibration) decreases when increasing the quantity of isobutyl alcohol and attained a minimum with B20+ 1% isobutyl alcohol. The experimental results show that the isobutyl alcohol up to 1% with diesel-biodiesel blends can be used in the CI engine with no further adjustments. K E Y W O R D S combustion, compression ratio, Kusum seed oil biodiesel, RMS velocity, transesterification Abbreviations: , crank angle (•); l, length of connecting rod (m); ΔCA, uncertainty in crank angle; ΔW, uncertainty in load; ΔP, uncertainty in pressure; ΔN, uncertainty in speed; ΔT, uncertainty in temperature; ΔRMSvelocity, uncertainty in vibration; ADC, analog to digital converter; B20, KSOME 20% in diesel; CHRR, net heat release rate (J/ o CA); CI, compression ignition; CP, cylinder pressure (bar); CR/CRs, compression ratio/compression ratios; D, cylinder bore (m); FFT, fast Fourier transforms; IP, injection pressure; KSOME, Kusum seed oil methyl ester; LDV, laser Doppler vibrometer; m/sec, meter/second; n, number of points within a time period; NaOCH 3 , sodium methoxide; NHRR, cumulative heat release rate (J/ o CA); PDV, Polytec Doppler vibrometer; r, crank radius (m); RMS, root mean square; V, instantaneous cylinder volume (m3); V(t j), velocity with respect to time; Vc, clearance volume (m3); VCR, variable compression ratio; V RMS , RMS velocity. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Vibration and noise characteristics of CI engine fueled with Niger seed oil methyl ester blends and hydrogen

Cited by 20 publications

References 24 publications

Emission and vibration characteristics of Niger seed oil biodiesel fueled diesel engine

Emission and vibration characteristics of Niger seed oil biodiesel fueled diesel engine

Comprehensive performance, combustion, emission, and vibration parameters assessment of diesel engine fuelled with a hybrid of niger seed oil biodiesel and hydrogen: response surface methodology approach

Combustion and vibration characteristics of variable compression ratio direct injection diesel engine fuelled with diesel‐biodiesel and alcohol blends

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