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Journals / International Journal of Automotive Engineering and Technologies / 2019 / Cilt: 8 - Sayı: 1

Thermodynamic analysis of endoreversible six-stroke Otto cycle with respect to equivalence ratio, residual gas fraction and mean piston speed

Emre ARABACI
Pages
1–10
Publication Date
2019-05-20
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

For this reason, the results are crucial in providing a good guideline for evaluating and improving the performance of real six-stroke Otto engines.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The analysis of the six-stroke Otto cycle was performed using the finite-time thermodynamics dependence on mean piston speed, equivalence ratio and residual gas fraction.
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Key Findings & Data:It was assumed that the cycles operate with the same mixture flow per second so that both performances of cycles can be compared.
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Conclusion & Impact:For this reason, the results are crucial in providing a good guideline for evaluating and improving the performance of real six-stroke Otto engines.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:six stroke · endoreversible otto cycle · finite time thermodynamics

Abstract

The analysis of the six-stroke Otto cycle was performed using the finite-time thermodynamics dependence on mean piston speed, equivalence ratio and residual gas fraction. In the analysis, friction loss, internal irreversibilities, heat transfer losses were taken into account by empirical correlations. Relations between power output, thermal efficiency, and compression ratio were obtained by detailed numerical examples. The results were presented as comparative for four- and six-stroke Otto cycle. It was assumed that the cycles operate with the same mixture flow per second so that both performances of cycles can be compared. The study showed that more fuel flow can be supplied to the six-stroke Otto cycle for the same mixture flow. However, there was a slight increase in the maximum cycle temperature. For this reason, the results are crucial in providing a good guideline for evaluating and improving the performance of real six-stroke Otto engines.

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Cite This Article

ARABACI, E. (2019). Thermodynamic analysis of endoreversible six-stroke Otto cycle with respect to equivalence ratio, residual gas fraction and mean piston speed. International Journal of Automotive Engineering and Technologies, Cilt: 8 - Sayı: 1, 1–10. https://ajindex.com/articles/258245

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References (11)

  1. E. Arabaci, and Y. İçingür, “Thermodynamic investigation of experimental performance parameters of a water injection with exhaust heat recovery six-stroke engine” Journal of the Energy Institute, 2016, 89, 569-577, DOI:10.1016/j.joei.2015.06.006
  2. E. Arabaci, Y. İçingür, H. Solmaz, A. Uyumaz, and E. Yilmaz, “Experimental investigation of the effects of direct water injection parameters on engine performance in a six-stroke engine”. Energy conversion and management, 2015, 98, 89-97, DOI:10.1016/j.enconman.2015.03.045
  3. Y. İçingür, E. Arabaci, “Performance and ıdealized air-fuel cycle analysis of a six-stroke spark-ignition engine”. Journal of Polytechnic, 2013, 16, 37-44, DOI:10.2339/2012.16.1 4. E. Arabaci, “Six-stroke reciprocating internal combustion engines” Mehmet Akif Ersoy University Journal of Natural and Applied Sciences Institute, 2012, 3, 37-45
  4. R. Ebrahimi, M. Hoseinpour, “Performance analysis of irreversible Miller cycle under variable compression ratio” Journal of Thermophysics and Heat Transfer, 2013, 27, 542-548, DOI:10.2514/1.T3981
  5. S.A. Klein, “An explanation for observed compression ratios in internal combustion engines” Journal of engineering for gas turbines and power, 1991, 113, 511-513, DOI:10.1115/1.2906270
  6. Y.L. Ge, L. Chen, and F.R. Sun, “Ecological Optimization of an Irreversible Otto Cycle With Variable Specific Heats of Working Fluid” Proceedings of the Chinese Society of Engineering Thermophysics on Engineering Thermophysics and Energy Utility, Wuhan, China, 2011, 5-7, DOI: 10.1615/TFEC2017.fna.018308
  7. R. Ebrahimi, “Effects of mean piston speed, equivalence ratio and cylinder wall temperature on performance of an Atkinson engine” Mathematical and Computer Modelling, 2011, 53, 1289-1297, DOI:10.1016/j.mcm.2010.12.015
  8. R. Ebrahimi, “Thermodynamic Modeling of an Atkinson Cycle with respect to Relative Air-Fuel Ratio, Fuel Mass Flow Rate and Residual Gases” Acta Physica Polonica, A., 2013, 124,, 29-34, DOI:10.12693/APhysPolA.124.29
  9. R. Ebrahimi, “Effect of Volume Ratio of Heat Rejection Process on Performance of an Atkinson Cycle” Acta Physica Polonica A, 2018, 133, 201-205, DOI:10.12693/APhysPolA.133.201
  10. J. You, L. Chen, Z. Wu, and F. Sun,”Thermodynamic performance of Dual-Miller cycle (DMC) with polytropic processes based on power output, thermal efficiency and ecological function” Science China Technological Sciences, 2018, 61, 453-463, DOI:10.1007/s11431-017-9108-2
  11. Y. Ge, L. Chen, F. Sun, an