Port Flow Simulation and In-cylinder Swirl Motion Characteristic Effects in Internal Combustion Engine Duty Cycle

Aniekan Essienubong Ikpe, Ikechukwu Bismarck Owunna, Philip Obhenime John

Abstract

Combustion process in internal combustion engines involve significant temperature and pressure, carbon deposit, turbulence flame, swirling and tumbling flows which are considered necessary for operating these engines. This study examines the in-cylinder effects of swirling and tumbling motion along with the in-cylinder temperature during combustion process of air-fuel mixture. A detailed port flow analysis was carried out using ANSYS R-16 software and a valve lift of 8 mm. The velocity magnitude and mass flow rate were monitored using swirl motion simulated profiles and cut planes. Motion analysis was carried out to determine the angular velocity of the cycle using SOLIDWORKS 2017. The average angular velocity of the crankshaft was found to be 1315 rpm, with percentage deviation of less than 20%. It was also found that the area-weighted average velocity of charge was 11 m/s with corresponding mass flow rate measured as -0.055479 kg/s. The maximum flow rate was calculated at 8 mm as 0.005417 kg/s. The ICE swirl plane 1, 2 and 3 were characterized by different contours of velocity magnitude, indicating that the swirl intensity increased as the charge moved further down the cylinder while the charge volume of swirl increased along the cylinder length. For the ICE cut plane, the velocity increased as the swirl increased while the mass flow rate decreased as the fluid went further away from the poppet valve. Therefore, the intensity of swirl increased along the stroke length of the engine cylinder. In addition, increase in the swirl number led to uniform radial temperature distribution as well as reduction in the in-cylinder flame temperature which can mitigate against the formation of toxic pollutants.

Keywords

Air-fuel; In-cylinder combustion; Internal combustion engine; Port flow simulation; Swirl motion.

Article Metrics

Abstract view : 40 times
PDF - 19 times

Full Text:

PDF

References

Z. Barbouchi and J. Bessrour, Turbulence study in the internal combustion engine, Journal of Engineering and Technology Research, 1(9), 2009, 194-202.

A. E. Ikpe, I. Owunna, P. O. Ebunilo and E. Ikpe, Material selection for high pressure (HP) compressor blade of an aircraft engine, International Journal of Advanced Materials Research, 2(4), 2016, 59-65.

A. E. Ikpe, I. Owunna, P. O. Ebunilo and E. Ikpe, Material selection for high pressure (HP) turbine blade of conventional turbojet engines, American Journal of Mechanical and Industrial Engineering, 1(1), 2016, 1-9.

M. P. Kumar and S. Adinarayana, Design optimization of piston of an IC engine and investigation on its influence on overall assembly, International Journal of Engineering Science and Computing, 7(6), 2017, 13542-13551.

G. S. Prasas, K. D. Achari, E. K. Goud, M. Nagaraju and K. Srikanth, Design and analysis of internal combustion engine on different materials using CAE tool ANSYS, International Journal of Engineering and Techniques, 2(3), 2016, 1-7.

I. B. Owunna and A. E. Ikpe, Design analysis of reciprocating piston for single cylinder internal combustion engine, International Journal of Automotive Science and Technology, 4(2), 2020, 30-39.

M. Kaplan, Influence of swirl, tumble and squish flows on combustion characteristics and emissions in internal combustion engine-review, International Journal of Automotive Engineering and Technologies, 8(2), 2019, 83-102.

M. Baratta, D. Misul, E. Spessa, L. Viglione, G. Carpegna and F. Perna, Experimental and numerical approaches for the quantification of tumble intensity in high-performance SI engines, Energy Conversion and Management, 138, 2017, 435-451.

M. Costa, G. Bianchi, C. Forte and G. Cazzoli, A numerical methodology for the multi-objective optimization of the diesel engine combustion, Energy Procedia, 45, 2014, 711-720.

G. Fontana, E. Galloni, E. Jannelli and R. Palmaccio, Influence of the intake system design on a small spark-ignition engine performance: A theoretical analysis, SAE Technical Paper, 2003, No. 1-3134-3135.

R. K. Tyagi, S. K. Sharma A. Chandra, S. Maheshwari and P. Goyal, Improved intake manifold design for IC engine emission control, Journal of Engineering Science and Technology, 10(9), 2015, 1188-1202.

J. B. Heywood, Fluid motion within the cylinder of internal combustion engines, ASME Journal of Fluids and Engineering, 109, 1987, 3-35.

R. F. Huang, C. W. Huang, S. B. Chang, H. S. Yang, T. W. Lin and W. Y. Hsu, Topological flow evolutions in cylinder of a motored engine during intake and compression stroke, Journal of Fluids and Structures, 20, 2005, 105-127.

S. Falfari, F. Brusiani and G. M. Bianchi, Numerical analysis of in-cylinder tumble flow structures-parametric 0D model development, Energy Procedia, 45, 2014, 987-996.

A. Lakshman, C. P. Karthikeyan and R. Padmanabhan, 3D In-cylinder cold flow simulation studies in an ic engine using CFD, International Journal of Research in Mechanical Engineering, 1(1), 2013, 64-69.

D. Mehrnoosh, H. A. Asghar and M. A. Asghar, Thermodynamic model for prediction of performance and emission characteristics of si engine fuelled by gasoline and natural gas with experimental verification, Journal of Mechanical Science and Technology, 26(7), 2012, 2213-2225.

A. E. Ikpe and I. B. Owunna, A 3D modelling of the in-cylinder combustion dynamics of two stroke internal combustion engine in its service condition. Nigerian Journal of Technology, 39(1), 2020, 161-172.

W. Pulkrabek, Engineering fundamentals of the internal combustion engine, New Jersey: Prentice-Hall, 1998.

B. Ramanjulu, A. Fulli, D. J. Raj and A. E. Bekele, Performance analysis of IC engine based on swirl induction by using CFD, International Journal of Advanced Research in Science, Engineering and Technology, 2(5), 2015, 622-627.

W. H. Kurniawan, S. Abdullah, K. Sopian, Z. M. Nopiah and A. Shamsudeen, CFD investigation of fluid flow and turbulence field characteristics in a four-stroke automotive direct injection engine, Journal-The Institution of Engineers, Malaysia, 69(1), 2008, 1-12.

J. B. Heywood, Internal Combustion Engine Fundamentals, New York, USA: McGraw-Hill, 1988.

C. Funk, V. Sick, D. L. Reuss and W. J. Dahm, Turbulence properties of high and low swirl in-cylinder flows, SAE Technical Paper, 2002- 01-2841, Warrendale, PA, 2002

S. Lee, K. Tong, B. D. Quay, J. V. Zello and A. Domenic Santavicca, Effects of swirl and tumble on mixture preparation during cold start of a gasoline direct-injection engine, SAE Technical Paper, 01-1900, Warrendale, PA, 2001.

M. El-Adawy, M. R. Heikal, A. Rashid, A. Aziz, M. I. Siddiqui, A. Hasanain and A. Wahhab, Experimental study on an IC engine in-cylinder flow using different steady-state flow benches, Alexandria Engineering Journal, 56, 2017, 727-736.

C. R. Kumar and G. Nagarajan, Investigation of flow during intake stroke of a single cylinder internal combustion engine, ARPN Journal of Engineering and Applied Sciences, 7(2), 2012, 180-186.

H. Kumar and N. Jayashankar, Port flow simulation of an IC engine, International Journal of Innovations in Engineering Research and Technology, 2(9), 2015 1-9.

S. Akele, C. Aganama, E. Emeka, Y. Abudu-Mimini, S. Umukoro and R. Okonkwo, CFD port flow simulation of air flow rate in spark ignition engine, International Journal of Engineering and Management Research, 10(6), 2020, 87-95.

J. H. Whitelaw and H. M. Xu, Cyclic variations in a lean-burn spark ignition engine without and with swirl, SAE Technical Paper, Warrendale, PA, 1995, 950683.

A. E. Ikpe, I. B. Owunna and P. Satope, Finite element analysis of aircraft tire behaviour under overloaded aircraft landing phase, Aeronautics and Aerospace Open Access Journal, 2(1), 2018, 34-39.

A. A. Hosseini, M. Ghodrat, M. Moghiman and S. H. Pourhoseini, Numerical study of inlet air swirl intensity effect of a methane-air diffusion flame on its combustion characteristics, Case Studies in Thermal Engineering, 18, 2020, 100610.

Refbacks

  • There are currently no refbacks.