EXERGY ANALYSIS OF A SINGLE-CYLINDER FOUR-STROKE GASOLINE ENGINE

Abstract

In developing countries, the four-stroke single-cylinder gasoline engine finds wide use. Motorcycles, tricycles and household machines like vegetable grinding machines are but a few of the machinery which run on this engine. Researchers have found that this engine is inefficient and consumes a lot of fuel, in light of sustainability and energy efficiency, this study aimed to perform an exergy analysis of a single-cylinder 4-stroke gasoline engine to determine how best its efficiency can be improved. Parameters such as brake thermal power, exergy efficiency, the quantity of exergy destruction and the component of the engine which is the most influential on its efficiency were determined while varying the engine’s torque. A G200K1 Honda engine was used as the study material. At the lowest tested torque of 9.4Nm, a corresponding brake power output of 2.4609kW and efficiency of 17.07% was measured, while at a higher torque 9.70Nm, a corresponding brake power output of 2.5395kW and efficiency of 17.62% was measured. It was also found that for every 1.06% rise in torque there is a corresponding 1.80% rise in brake power and exergy efficiency. It was concluded from the findings that the bulk of energy waste in the system comes from the high-temperature gas released from the engine’s exhaust. For the overall efficiency of four-stroke single-cylinder gasoline engines to be improved, the exergy destruction due to combustion should be minimised by optimizing the combustion temperature and reducing heat loss from the combustion chamber.

Keywords

• EXERGY
• EXERGY ANALYSIS
• INTERNAL COMBUSTION ENGINE
• ENERGY

References

1. Aliu, I., 2020, “Energy efficiency in postpaid-prepaid metered homes: Analyzing effects of socio-economic, housing, and metering factors in Lagos, Nigeria”, Energy Efficiency,13(5), 853–869.
2. Ameri, M., Kiaahmadi, F., Khanaki, M., and Nazoktabar, M., 2010, “Energy and exergy analyses of a spark-ignition engine”, International Journal of Exergy, 7(5), 547–563.
3. Anuchi, S. O., and Chukwu, U. J., 2017, “Investigation of Heavy Organics Precipitation from Nigerian Crude Oil Residue Using Single n-Alkane Solvents”, IOSR Journal of Applied Chemistry, 10(4), 22–25.
4. Arango-Miranda, R., Hausler, R., Romero-López, R., Glaus, M., and Ibarra-Zavaleta, S. P., 2018, “An overview of energy and exergy analysis to the industrial sector, a contribution to sustainability”, Sustainability, 10(1), 153-163.
5. Barelli, L., Bidini, G., Gallorini, F., and Ottaviano, A., 2011, “An energetic–exergetic analysis of a residential CHP system based on PEM fuel cell”, Applied Energy, 88(12), 4334–4342.
6. Caliskan, H., and Hepbasli, A., 2011, “Exergetic cost analysis and sustainability assessment of an internal combustion engine”, International Journal of Exergy, 8(3), 310–324.
7. Ghazikhani, M., Hatami, M., Ganji, D. D., Gorji-Bandpy, M., Behravan, A., and Shahi, G., 2014, “Exergy recovery from the exhaust cooling in a DI diesel engine for BSFC reduction purposes”, Energy, 65, 44–51.
8. Hacatoglu, K., Dincer, I., and Rosen, M. A., 2014, “Exergy analysis of a hybrid solar–wind–biomass system with thermal and electrical energy storage for a community” In Progress in exergy, energy, and the environment, 3–14.

9. Hudzik, J. M., Bozzelli, J. W., and Simmie, J. M., 2014, “Thermochemistry of C7H16 to C10H22 alkane isomers: Primary, secondary, and tertiary C–H bond dissociation energies and effects of branching”, The Journal of Physical Chemistry, 118(40), 9364–9379.
10. Ibrahim, T. K., Basrawi, F., Awad, O. I., Abdullah, A. N., Najafi, G., Mamat, R., and Hagos, F. Y., 2017, “Thermal performance of gas turbine power plant based on exergy analysis”, Applied Thermal Engineering, 115, 977–985.
11. Liu, H., Ma, J., Tong, L., Ma, G., Zheng, Z., and Yao, M., 2018, “Investigation on the potential of high efficiency for internal combustion engines”, Energies, 11(3), 11-20. https://doi.org/10.3390/en11030513
12. Modibbo, J. H., and Mary, F. O., 2017, “Impact of Commercial Tricycle Operation on Income of Youth in Mubi North Local Government Adamawa State Nigeria”, IDOSR J Humanities Soc Sci, 2(2), 56–72.
13. Moran, M. J., Shapiro, H. N., Boettner, D. D., and Bailey, M. B., 2010, Fundamentals of engineering thermodynamics (8th ed.). New York: John Wiley & Sons.
14. Nourozieh, H., Kariznovi, M., Guan, J. G., and Abedi, J., 2013. Measurement of thermophysical properties and modeling for pseudo-binary mixtures of n-decane and Athabasca bitumen. Fluid Phase Equilibria, 347, 62–75.
15. Obodeh, O., and Akhere, N. C., 2010, “Experimental study on the effects of kerosene-doped gasoline on gasoline-powered engine performance characteristics”, Journal of Petroleum and Gas Engineering, 1(2), 37–40.
16. Rosen, M. A., 2021, “Exergy analysis as a tool for addressing climate change”, European Journal of Sustainable Development Research, 5(2), 148-158.
17. Sayin, C., Hosoz, M., Canakci, M., and Kilicaslan, I., 2007, “Energy and exergy analyses of a gasoline engine”, International Journal of Energy Research, 31(3), 259–273.
18. Seyedkavoosi, S., Javan, S., and Kota, K., 2017, “Exergy-based optimization of an organic Rankine cycle (ORC) for waste heat recovery from an internal combustion engine (ICE)”, Applied Thermal Engineering, 126, 447–457.
19. Shaheen, S. A., and Lipman, T. E., 2007, “Reducing Greenhouse Emissions and Fuel Consumption – Sustainable Approaches for Surface Transportation”, International Association of Traffic and Safety Sciences, 3(1), 6–20. https://doi.org/10.1016/S0386-1112(14)60179-5
20. Xu, M., Lin, B., and Wang, S., 2021, “Towards energy conservation by improving energy efficiency? Evidence from China’s metallurgical industry”, Energy, 216, 119-135.
21. Yamin, J. A., Sheet, E. A. E., and Hdaib, I., 2018, “Exergy analysis of biodiesel fueled direct injection CI engines”, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 40(11), 1351–1358.