Method for Determining Volumetric Efficiency and Its Experimental Validation

Andrzej Ambrozik, Dariusz Kurczyński, Piotr Łagowski

Abstract


Modern means of transport are basically powered by piston internal combustion engines. Increasingly rigorous demands are placed on IC engines in order to minimise the detrimental impact they have on the natural environment. That stimulates the development of research on piston internal combustion engines. The research involves experimental and theoretical investigations carried out using computer technologies. While being filled, the cylinder is considered to be an open thermodynamic system, in which non-stationary processes occur. To make calculations of thermodynamic parameters of the engine operating cycle, based on the comparison of cycles, it is necessary to know the mean constant value of cylinder pressure throughout this process. Because of the character of in-cylinder pressure pattern and difficulties in pressure experimental determination, in the present paper, a novel method for the determination of this quantity was presented. In the new approach, the iteration method was used. In the method developed for determining the volumetric efficiency, the following equations were employed: the law of conservation of the amount of substance, the first law of thermodynamics for open system, dependences for changes in the cylinder volume vs. the crankshaft rotation angle, and the state equation. The results of calculations performed with this method were validated by means of experimental investigations carried out for a selected engine at the engine test bench. A satisfactory congruence of computational and experimental results as regards determining the volumetric efficiency was obtained. The method for determining the volumetric efficiency presented in the paper can be used to investigate the processes taking place in the cylinder of an IC engine.

Keywords:
Cylinder filling process; engine working cycle; indicator diagram; piston internal combustion engine; volumetric efficiency

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References


A. Urbahs and A. Unbedahts, “Acoustic emission method evaluation for high speed ship engines condition monitoring”. – Transport Means 2015 : Proceedings of the 19th International Conference, Lietuva, Kaunas, 22.–23. October, 2015. Kaunas: Technologija, 2015, pp.587-590. ISSN 1822-296X. e-ISSN 2351-7034.

A. Urbahs, A. Unbedahts and J. Fescuks, “Ship Diesel Engines Technical Condition Acoustic Diagnostic Results”. Transport Means 2016: Proceedings of the 20th International Conference. Lithuania, Kaunas, 5–7 October 2016. Kaunas: Kaunas University of Technology, 2016, pp. 589–593. ISSN 2351-7034.

A. Ambrozik, Analysis of Working Cycles in Four-Stroke IC Engines. Kielce University of Technology, Kielce, 2010.

A. Ambrozik, Selected Problems in Thermal Processes in Piston Internal Combustion Engines. Kielce University of Technology, Kielce, 2003.

O. A. Özsoysal, “Effects of Combustion Efficiency on a Dual Cycle,” Energy Conversion and Managemen, vol. 50, no. 9, pp. 2400–2406, 2009. https://doi.org/10.1016/j.enconman.2009.05.029

B. Sahin, O. A. Özsoysal, and O. S. Söğüt, “A Comparative Performance Analysis of Endoreversible Dual Cycle Under Maximum Ecological Function and Maximum Power Conditions,” Exergy, An International Journal, vol. 2, no. 2, pp. 173–185, Jan. 2002. https://doi.org/10.1016/S1164-0235(02)00071-7

R. Ebrahimi and M. Sherafati, “Thermodynamic Simulation of Performance of a Dual Cycle With Stroke Length and Volumetric Efficiency,” Journal of Thermal Analysis and Calorimetry, vol. 11, no. 1, pp. 951–957, Apr. 2012. https://doi.org/10.1007/s10973-012-2424-1

W. Pulkrabek Willard, Engineering Fundamentals of the Internal Combustion Engine. Prentice Hall Upper Saddle River, New Jersey, 2003.

A. K. Oppenheim, Combustion in piston engines. Springer Verlag, 2004. https://doi.org/10.1007/978-3-662-06297-5

A. Irimescu, “Study of Volumetric Efficiency for Spark Ignition Engines Using Alternative Fuels,” Analele Universităţii “Eftimie Murgu” Reşiţa, Anul XVII, No. 2, pp. 149–154, 2010.

K. Niewiarowski, Piston combustion engines Vol. 1. Wydawnictwo Komunikacji i Łączności, Warszawa, 1983.

R. Ebrahimi, D. Ghanbarian, and M. R. Tadayon, “Performance of an Otto Engine With Volumetric Efficiency, Journal of American Science, vol. 6, no. 3, pp. 27–31, 2010.

G. De Nicolao, R. Scattolini, and C. Siviero, “Modelling the Volumetric Efficiency of IC Engines: Parametric, Non-Parametric and Neural Techniques,” Control Engineering Practice, vol. 4, no. 10, pp. 1405–1415, 1996. https://doi.org/10.1016/0967-0661(96)00150-5

M. Gumus, “Effects of Volumetric Efficiency on the Performance and Emissions Characteristics of a Dual Fuelled (Gasoline and LPG) Spark Ignition Engine,” Fuel Processing Technology, vol. 92, no. 10, pp. 1862–1867, Oct. 2011. https://doi.org/10.1016/j.fuproc.2011.05.001

W. Matzke, Timing Gear Design in High-Speed Engines. Wydawnictwo Komunikacji i Łączności, Warszawa, 1974.

J. B. Heywood, Internal combustion engine fundamentals. McGraw – Hill Book Company, 1988.

W. G. Diacenko, Exchange of Gases in Internal Combustion Engines (in Russian). Naukowo-Metodyczny Gabinet Ukraińskiej Republiki Socjalistycznej, 1989.

N. K. Szokotov, Fundamentals of Thermodynamic Optimisation in Diesel Engines Used in Transportation (in Russian). Kharkov: Wyższa Szkoła, 1980.

N. M. Glagolev et al., Train Engines and Gas Turbines. Moscow: Transport Kolejowy, 1957.

A. F. Szechovtzov et al., Modern Diesel Engines, Enhancing Fuel Efficiency and Durability. Kiev: Technika, 1992.

A. Ambrozik, T. Ambrozik, D. Kurczyński, and P. Łagowski, “Assessment of Performance Parameters in Multi-Stage Fuelled 1.3 Multijet Engine” in Proceedings of the Institute of Vehicles, vol. 1, no. 82, 2011, pp. 187–197.




DOI: 10.1515/tae-2017-0013

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