Comprehensive performance, combustion, emission, and vibration parameters assessment of diesel engine fuelled with a hyb
- PDF / 3,402,271 Bytes
- 16 Pages / 595.276 x 790.866 pts Page_size
- 103 Downloads / 238 Views
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 Jai Kumar Sagari1 · Bhatti Sukhvinder Kaur2 · Srinivas Vadapalli1 · Vamsi Teja Dadi1 · Sai Susmitha Guddanti1 · Santosh Kumar Lakkoju3 Received: 28 October 2019 / Accepted: 5 August 2020 © Springer Nature Switzerland AG 2020
Abstract 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 (NOx), 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 R2 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.) 𝛿q Net heat release rate (J/deg.) 𝛿𝜃 𝛿qHeat Heat transfer rate combustion chamber wall 𝛿𝜃
(J/deg.)
𝛿V Volume change with crank angle (m3/deg.) 𝛿𝜃 𝛿p Pressure change with crank angle (bar/deg.) 𝛿𝜃
* Jai Kumar Sagari, [email protected] | 1Department of Mechanical Engineering, GITAM University, Visakhapatnam, India. 2Department of Mechanical Engineering, Andhra University, Visakhapatnam, India. 3Department of Physics, Anil Neerukonda Institute of Technology and Sciences, Visakhapatnam, India. SN Applied Sciences
(2020) 2:1508
| https://doi.org/10.1007/s42452-020-03304-x
Vol.:(0123456
Data Loading...
