Impact of Compression Ratio on Combustion Characteristics of VCR-CRDI Type Diesel Engine Fueled with Moringa Oleifera Methyl Ester

Document Type : Regular Article

Authors

1 Faculty of Engineering and Technology, Parul University, Vadodara, India

2 Parul Institute of Technology, Parul University, Vadodara, India

10.47176/jafm.18.3.2695

Abstract

This study explores the impact of compression ratio (CR) and fuel blends on the combustion properties of a diesel engine fueled by conventional diesel and biodiesel derived from Moringa oleifera. The research was conducted on a single-cylinder diesel engine with variable compression ratio (VCR) and common rail direct injection (CRDI), utilizing diesel and Moringa oleifera biodiesel blends MB10, MB20, and MB30. The experimental conditions included varying the CR between 15:1 and 18:1, maintaining an injection timing of 23°before top dead center, injection pressure set at 600 bar, and an engine speed of 1500 rpm under 100% load. The findings revealed that increasing the CR raises cylinder pressure (CP), cumulative heat release rate (CHRR), and rate of pressure rise (ROPR) for all the tested fuel blends. Notably, the diesel exhibited the highest CP of 70.83 bar, CHRR of 1.36 kJ, and ROPR of 6.42 bar/°CA (degree per crack angle) at a CR of 18:1. Among the biodiesel blends, MB30 showed the highest CP of 69.21 bar, while MB10 displayed highest CHRR and ROPR of 1.5 kJ and 6.17 bar/°CA, respectively. Furthermore, the net heat release rate (NHRR) and mean gas temperature (MGT) decreased with rising CR for all tested fuels. At a lower CR of 15:1, the diesel showcased the highest NHRR and MGT of 69.75 J/°CA and 1303.69 °C, respectively, whereas, in the case of biodiesel blends, MB20 demonstrated the highest values of 67.53 J/°CA and 1287.39 °C, respectively, at the same CR. Meanwhile, the ignition delay (ID) and combustion period diminish with a rise in the CR for all tested fuel blends. At a higher CR of 18:1, the minimum ID and combustion duration for diesel were reported as 17°CA and 15°CA, respectively. For the biodiesel blends, MB10 and MB30 showed a minimum ID of 16°CA, while MB10 and MB20 exhibited minimum combustion duration of 15°CA at the same CR.

Keywords

Main Subjects

References

Balasubramanian, R., & Subramanian, K. A. (2021). Experimental investigation on the effects of compression ratio on performance, emissions and combustion characteristics of a biodiesel-fueled automotive diesel engine. Biofuels, 12(8), 913–924. https://doi.org/10.1080/17597269.2018.1558840
Dash, S. K., Lingfa, P., & Chavan, S. B. (2019). Environmental effects combustion analysis of a single cylinder variable compression ratio small size agricultural di diesel engine run by nahar biodiesel and its diesel blends. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 0(00), 1–10. https://doi.org/10.1080/15567036.2019.1604878
Demirbas, A. (2007). Importance of biodiesel as transportation fuel. Energy Policy, 35(9), 4661–4670. https://doi.org/10.1016/j.enpol.2007.04.003
Demirbas, A. (2010). Biodiesel for future transportation energy needs. Energy Sources, Part A: Recovery, Utilization and Environmental Effects, 32(16), 1490–1508. https://doi.org/10.1080/15567030903078335
El-Kassaby, M., & Nemit-Allah, M. A. (2013). Studying the effect of compression ratio on an engine fueled with waste oil produced biodiesel/diesel fuel. Alexandria Engineering Journal, 52(1), 1–11. https://doi.org/10.1016/j.aej.2012.11.007
Enweremadu, C. C., & Rutto, H. L. (2010). Combustion, emission and engine performance characteristics of used cooking oil biodiesel - A review. Renewable and Sustainable Energy Reviews, 14(9), 2863–2873. https://doi.org/10.1016/j.rser.2010.07.036
Hosamani, B. R., & Katti, V. V. (2018). Experimental analysis of combustion characteristics of CI DI VCR engine using mixture of two biodiesel blend with diesel. Engineering Science and Technology, an International Journal, 21(2018), 769-777 https://doi.org/10.1016/j.jestch.2018.05.015
Hwang, J., Qi, D., Jung, Y., & Bae, C. (2014). Effect of injection parameters on the combustion and emission characteristics in a common-rail direct injection diesel engine fueled with waste cooking oil biodiesel. Renewable Energy, 63, 9–17. https://doi.org/10.1016/j.renene.2013.08.051
Janaun, J., & Ellis, N. (2010). Perspectives on biodiesel as a sustainable fuel. Renewable and Sustainable Energy Reviews, 14(4), 1312–1320. https://doi.org/10.1016/j.rser.2009.12.011
Ma, F., & Hanna, M. A. (1999). Biodiesel production: a review. Bioresource Technology, 70(1), 1–15. https://doi.org/10.1016/s0960-8524(99)00025-5
Mattarelli, E., Rinaldini, C. A., & Savioli, T. (2015). Combustion analysis of a diesel engine running on different biodiesel blends. Energies, 8(4), 3047–3057. https://doi.org/10.3390/en8043047
Moffat, R. J. (1988). Describing the uncertainties in experimental results. Experimental Thermal and Fluid Science, 3(17), 3–16. https://doi.org/10.1016/0894-1777(88)90043-X
Nagesh, S. N. (2019). Combustion , performance and emission characteristics of karanja blended biodiesel in CI engine : effect of CR. Journal of Physics: Conf. Series, 1276. https://doi.org/10.1088/1742-6596/1276/1/012068
Onuh, E. I., Inambao, F., & Awogbemi, O. (2021). Performance and emission evaluation of biodiesel derived from waste restaurant oil and Moringa oleifera: a comparative study. International Journal of Ambient Energy, 42(8), 912–919. https://doi.org/10.1080/01430750.2019.1594377
Paul, A., Panua, R., & Debroy, D. (2017). An experimental study of combustion, performance, exergy and emission characteristics of a CI engine fueled by Diesel-ethanol-biodiesel blends. Energy, 141, 839–852. https://doi.org/10.1016/j.energy.2017.09.137
Rajasekar, E., & Selvi, S. (2014). Review of combustion characteristics of CI engines fueled with biodiesel. Renewable and Sustainable Energy Reviews, 35(x), 390–399. https://doi.org/10.1016/j.rser.2014.04.006
Ramalingam, S., & Mahalakshmi, N. V. (2020). Influence of Moringa oleifera biodiesel-diesel-hexanol and biodiesel-diesel-ethanol blends on compression ignition engine performance, combustion and emission characteristics. RSC Advances, 10(8), 4274–4285. https://doi.org/10.1039/c9ra09582a
Sahoo, P. K., & Das, L. M. (2009). Combustion analysis of Jatropha , Karanja and Polanga based biodiesel as fuel in a diesel engine. Fuel, 88(6), 994–999. https://doi.org/10.1016/j.fuel.2008.11.012
Sanjid, A., Kalam, M. A., Masjuki, H. H., Varman, M., Zulkifli, N. W. B. M., & Abedin, M. J. (2016). Performance and emission of multi-cylinder diesel engine using biodiesel blends obtained from mixed inedible feedstocks. Journal of Cleaner Production, 112, 4114–4122. https://doi.org/10.1016/j.jclepro.2015.07.154
Singh, A. P., & Agarwal, A. K. (2018). Evaluation of fuel injection strategies for biodiesel-fueled CRDI engine development and particulate studies. Journal of Energy Resources Technology, Transactions of the ASME, 140(10). https://doi.org/10.1115/1.4039745
Soudagar, M. E. M., Khan, H. M., Yunus Khan, T. M., Razzaq, L., Asif, T., Mujtaba, M. A., Hussain, A., Farooq, M., Ahmed, W., Shahapurkar, K., Alwi, A., Ibrahim, T. M., Ishtiaq, U., Elfasakhany, A., Baig, M. A. A., Goodarzi, M. S., & Safaei, M. R. (2021). Experimental analysis of engine performance and exhaust pollutant on a single-cylinder diesel engine operated using moringa oleifera biodiesel. Applied Sciences (Switzerland), 11(15). https://doi.org/10.3390/app11157071
Suresh, M., Jawahar, C. P., Renish, R. R., & Malmquist, A. (2021). Performance evaluation and emission characteristics of variable compression ratio diesel engine using Argemone Mexicana biodiesel. Energy Sources, Part A: Recovery, Utilization and Environmental Effects, 43(12), 1511–1523. https://doi.org/10.1080/15567036.2019.1648593
Tat, M. E. (2011). Cetane number effect on the energetic and exergetic efficiency of a diesel engine fuelled with biodiesel. Fuel Processing Technology, 92(7), 1311–1321. https://doi.org/10.1016/j.fuproc.2011.02.006
Teoh, Y. H., How, H. G., Masjuki, H. H., Nguyen, H. T., Kalam, M. A., & Alabdulkarem, A. (2019). Investigation on particulate emissions and combustion characteristics of a common-rail diesel engine fueled with Moringa oleifera biodiesel-diesel blends. Renewable Energy, 136, 521–534. https://doi.org/10.1016/j.renene.2018.12.110
Warkhade, G. S., & Babu, A. V. (2018). Combustion characteristics of linseed ( Linum usitatissimum ) methyl ester fuelled biodiesel blends in variable compression ratio diesel engine. Australian Journal of Mechanical Engineering, 00(00), 1–14. https://doi.org/10.1080/14484846.2018.1525170

Files

History

  • Received: 03 March 2024
  • Revised: 20 July 2024
  • Accepted: 21 September 2024
  • Available online: 01 January 2025

Share

How to cite

Statistics