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The influence of crevice volumes on HC pollutants in internal combustion engines

Journal Name:

  • Cumhuriyet Üniversitesi Fen Fakültesi Fen Bilimleri Dergisi

Publication Year:

  • 2015

Key Words:

Author NameUniversity of Author
Abstract (2. Language): 
In the present work, the effect of various parameters on formation of HC pollutants (unburned hydrocarbons) which occurs due to their transition into grooves and crevices of the combustion engine in a light diesel engine was investigated. Numerical calculations for simulation of the combustion chamber were carried out by means of a kind of CFD software called AVL Fire. The computational network field comprised crevice-bearing regions on the cylinder that allowed studying quantity and quality of entities entered the crevices. The effects of crevices and regions among the wall and the cylinder on formation of HC pollutants under different fuel injection methods at basic diesel engines were studied. Single-injection at different times as well as various fuel amounts formed the fuel injection configuration. Formation of HC pollutants occurs after ignition completion and before expansion commencement. It was observed that the highest amount of HC was formed using a retarded fuel injection timetable. At two-step injection, when frequency was increased and injection commenced sooner (advance), formation of HC pollutants was observed to be reduced. Dual injection with small frequency and retarded commencement also led to a significant reduction in HC pollutants formation.
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REFERENCES

References: 

[I] R.B. Krieger and G.L. Borman. The computation of apparent heat release for internal combustion engines. ASME, 1967.
[2] W.T. Lyn. The spectrum of diesel combustion research. Proc. Inst. Mech. Engrs., 184 (3J) (1969-1970), pp. 1-15
[3] G. A. Karim and H. C. Watson "Experimental and Analytical Examination of the Development of Inhomogeneities and Autoignition During Rapid Compression of Hydrogen-Oxygen-Argon Mixtures". J. Eng. Gas Turbines Power125(2), 458-465 (Apr 29,
2003)
[4] Karim, G.A. and Gao, J. 1992, A Predictive Model for Knock in Gas Fuelled Spark Ignition
Engines, SAE. Paper no. 922366 [5] G. A., Karim, and Y., Zhaoda, "Modeling of Auto -Ignition and Knock in a Compression
Ignition Engine of the Dual Fuel Type", IMechE (Institution of Mechanical Engineering),
C430/033, (1991), l41-148. [6] Z., Liu and G. A., Karim, "A Predictive Model for the Combustion Process in Dual Fuel
Engines", SAE Paper,No. 952435, (1995). [7] Hiroyasu, H. and Arai, M. "Structures of Fuel Sprays in Diesel Engines", SAE 900475. [8] H.Hiroyasu, T.co-workers , Fuel Spray Characterization in Diesel Engines, in Combustion
Modelin
i
n Reciprocating Engines (edited by Mattavi J. N. and Amann C. A.,Plenum Press),
pp.369-408,1980
[9] A.P. Watkins "A contribution to the design of a novel direct- injection diesel engine combustion system analysis of pip size Applied Mathematical Modelling, 17 (3) (1993), pp.
114-124
[10] Jones WP, Launder BE (1972) The Prediction of Laminarization with a Two-Equation Model of Turbulence. Int J Heat and Mass Transfer, vol 15, p 301
[II] Butler, S., " A Predictive Model forKnock in Dual Fuel Engines", Transactions of SAE,SAE (Society of Automotive Engineering) Paper, No.921550, (1992).
[12] C., Mansour, A., Bounif, A., Aris and F., Gaillard, "Gas- Diesel (Dual - Fuel) Modeling in
Diesel Engine Environment", Int. J. Therm. Sci., Vol. 40, (2001), 409-424. [13] AVL Manual "CFD-Solver_v2010_04_ICE-Physics-Chemistry"
[14] Bockhorn, H. ed. "Soot Formation in Combustion: Mechanisms and Models.",Springer,
1994.
[15] J. Warnatz • U. Maas • R.W. Dibble," Combustion Physical and Chemical Fundamentals, Modeling and Simulation, Experiments, Pollutant Formation," 4th Edition.2006.
[16] Hiroyasu, H., and Nishida, K. "Simplified Three Dimensional Modeling of Mixture Formation and Combustion in a DI Diesel Engine." SAE 890269, 1989.
[17] S.M. Tan, H.K. Ng, S. Gan. Computational study of crevice soot entrainment in a diesel engine. Applied Energy 102: 898-907, 2013.

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