Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
권호 표지
DOI QR코드

DOI QR Code

Validation of diesel engine gas flow one-dimensional numerical analysis using the method of characteristics

특성곡선법을 이용한 디젤엔진 가스유동 1차원 수치해석의 타당성 평가

  • KIM, Kyong-Hyon (Tranining Ship Management Center, Pukyong National University) ;
  • KONG, Kyeong-Ju (Department of Mechanical System Engineering, Pukyong National University)
  • 김경현 (부경대학교 선박실습운영센터) ;
  • 공경주 (부경대학교 대학원 기계시스템공학과)
  • Received : 2020.07.08
  • Accepted : 2020.08.10
  • Published : 2020.08.31
Download PDF
⟨ Previous Next ⟩

Abstract

In order to design a diesel engine system and predict its performance, it is necessary to analyze the gas flow of the intake and exhaust system. A gas flow analysis in three-dimensional (3D) format needs a high-resolution workstation and enormous time for analysis. Therefore, the method of characteristics (MOC) was used for a gas flow analysis with a fast calculation time and a low-resolution workstation. An experiment was conducted on a single cylinder diesel engine to measure pressure in cylinder, intake pipe and exhaust pipe. The one-dimensional (1D) gas flow was analyzed under the same conditions as the experiment. The engine speed, valve timing and compression ratio were the same conditions and the intake pressure was inputted as the experimental results. Bent pipe such as an exhaust port that cannot be realized in 1D was omitted. As results of validation, the cylinder pressure showed accuracy, but the exhaust pipe pressure exhibited inaccuracy. This is considered as an error caused by the failure to implement a bent pipe such as an exhaust port. When analyzed in 3D, calculation time required 61 hours more based on a model of this study. In the future, we intend to implement a bent pipe that cannot be realized in 1D using 3D and prepare a method to supplement reliability by using 1D-3D coupling.

Keywords

References

  1. Amann CA. 1985. Cylinder-pressure measurement and its use in engine research. SAE Thechinal Paper Series. https://doi.org/10.4271/852067.
  2. Benson R, Horlock J and Winterbone D. 1982. The thermodynamics and gas dynamics of internal-combustion engines. Oxford Univ Press, 73-325.
  3. Benson R and Whitehouse N. 1979. Internal Combusion Engines: Vol.1. Pergamon Press Ltd, 171-176.
  4. Burnat M. 1970. The method of characteristics and Riemann invariants for multidimensional hyperbolic systems. Siberian Mathematical Journal. 11, 210-232. https://doi.org/10.1007/BF00967297.
  5. Courant R and Hilbert D. 1962. Method of mathematical physics: Vol.2. Interscience Publishers, 411-412.
  6. Davies P. 1996. Piston engine intake and exhaust system design. Journal of Sound and Vibration, 190, 677-712. https://doi.org/10.1006/jsvi.1996.0085.
  7. Heisler H. 1995. Advanced engine technology. Butterworth-Heinemann, 274-275.
  8. Heywood J. 1988. Internal combustion engine fundamentals. McGraw-Hill Book Company, 748-816.
  9. International Maritime Organization (IMO). 2016. Effective date of implementation of the fuel oil standard in regulation. 14.1.3 of MARPOL ANNEX VI. resolution MEPC.280 (70).
  10. Jun HJ, Kong KJ and Jeong TY. 2019. Effect of mixer and urea-water-solution injection angle on flow mixing in SCR Systems. JFMSE. 31, 1417-1423. https://doi.org/10.13000/JFMSE.2019.10.31.5.1417.
  11. Kong KJ, Jung SH. Jeong TY and Koh DK. 2019. 1D-3D coupling algorithm for unsteady gas flow analysis in pipe systems. JMST, 33, 4521-4528. https://doi.org/10.1007/s12206-019-0848-2.
  12. Massau J. 1900. Memoire sur l'Integration graphique des Equations aux derivees partielles. Annales de l'Association des ingenieurs sortis des ecoles speciales de gand, 2, 159. (in French)
  13. Meisner S and Sorenson SC. 1986. Computer simulation of intake and exhaust manifold flow and heat transfer. SAE Technical Paper 860242. https://doi.org/10.4271/860242.
  14. Winterbone DE and Pearson RJ. 1999. Design techniques for engine manifolds: Wave action methods for IC engines. Pro Eng Pub. Ltd, 27-150.
  15. Winterbone DE and Pearson RJ. 2000. Theory of engine manifold design: Wave action methods for IC engines. Pro Eng Pub. Ltd, 179-274. https://doi.org/10.1115/1.1421124.
  16. Yoon JW, Xu FR and Jung SH. 2019. Numerical analysis for temperature distributions of SCR in Kaya Ship. KSPSE 23, 63-69. https://doi.org/10.9726/kspse.2019.23.1.063.