Influences of injector geometry parameters on fuel injection characteristics and parameters of a diesel engine
Email:
thinquynh@utc.edu.vn
Keywords:
3000 bar, common rail, the geometry of fuel injection, diesel engine, AVL fire.
Abstract
Internal combustion engines (ICEs), especially diesel engines, continue to play a huge role in the development of the global economy. The research trends to improve combustion is still the main research direction in recent years with the help of 3D simulation tools. In this study, a 3D-model of a four-stroke, single-cylinder diesel engine was built using AVL Fire software to evaluate the influence of injector geometry parameters on engine characteristics. The results have shown that, with the injection pressure reaching 3000 (bar), and the turbocharger pressure maintained at 0.15 (MPa), the engine achieves the maximum power and the minimum brake fuel consumption when the angle between the axis of the nozzle hole and the axis of the fuel injection nozzle is 150 degrees. However, at this angle value, the soot emission value is the lowest but the nitrogen oxides (NOx) value is close to reaching the maximum. Hydrocarbon (HC) and carbon monoxide (CO) emissions are the lowest value at 155 degrees of the angle between the axis of the spray hole and the axis of the fuel injection nozzle. Besides, the study also evaluated the engine's parameters when changing the injector hole diameter. With an injection hole diameter of 0.24 (mm), the maximum engine power increased by 5.3%, and the brake-specific fuel consumption decreased by 7.2% compared to other values of injection hole diameter. However, the engine emissions are not the best values in this case.References
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[3]. M. Palanisamy, J. Lorch, R. J. Truemner, B. Baldwin, Combustion Characteristics of a 3000 Bar Diesel Fuel System on a Single Cylinder Research Engine, SAE Int. J. Commer. Veh., 8 (2015) 479–490. https://doi.org/10.4271/2015-01-2798
[4]. J. Johnson, J. Naber, S. Y. Lee, G. Hunter, R. Truemner, T. Harcombe, Correlations of non-vaporizing spray penetration for 3000 bar diesel spray injection, in SAE Technical Papers, 11(2013) 12. https://doi.org/10.4271/2013-24-0033
[5]. G. Boccardo, F. Milloa, A. Pianoa, L. Arnoneb, S. Manellib, S. Faggc, P. Gattic, O. Erik Herrmannd, D. Queckd, J. Weber, Experimental investigation on a 3000 bar fuel injection system for a SCR-free non-road diesel engine, Fuel, 243 (2019) 342–351. https://doi.org/10.1016/j.fuel.2019.01.122
[6]. A. Vidal, P. Koukouvinis, M. Gavaises, Effect of Diesel Injection Pressures up to 450MPa on In-nozzle Flow Using Realistic Multicomponent Surrogates, 29th Conf. Liq. At. Spray Syst., 8534 (2019) 0–3.
[7]. A. Y. Dunin, M. G. Shatrov, L. N. Golubkov, A. L. Yakovenko, Providing Boot-Type Injection Rate Shape by Electric Impulse Control of the Common Rail Injector, Proc. High. Educ. Institutions. Маchine Build., 1(2020) 32–42. https://doi.org/10.18698/0536-1044-2020-1-32-42.
[8]. M. G. Shatrov, V. I. Malchuk, A. Y. Dunin, I. G. Shishlov, V. V. Sinyavski, A control method of fuel distribution by combustion chamber zones and its dependence on injection conditions, Therm. Sci., 22 (2018) S1425–S1434.
[9]. A. E. Catania, A. Ferrari, M. Manno, E. Spessa, Experimental investigation of dynamics effects on multiple-injection common rail system performance, J. Eng. Gas Turbines Power, 130 (2008) 032806.
[10]. M. G. Shatrov, L. N. Golubkov, A. Y. Dunin, P. V. Dushkin, Pressure Oscillations as a Factor Affecting the Management of the Fuel Injection Process in the Combustion Chamber of a Diesel Engine, 2019 Syst. Signals Gener. Process. F. Board Commun. SOSG, (2019) 1–5. https://doi.org/ 10.1109/SOSG.2019.8706808
[11]. L. Postrioti, G. Buitoni, F. C. Pesce, C. Ciaravino, Zeuch method-based injection rate analysis of a common-rail system operated with advanced injection strategies, Fuel, 128 (2014) 188–198. https://doi.org/10.1016/j.fuel.2014.03.006
[12]. L. Xu, X. S. Bai, M. Jia, Y. Qian, X. Qiao, X. Lu, Experimental and modeling study of liquid fuel injection and combustion in diesel engines with a common rail injection system, Appl. Energy, 230 (2018) 287–304. https://doi.org/10.1016/j.apenergy.2018.08.104
[13]. R. Balz, G. Bernardasci, B. von Rotz, D. Sedarsky, Influence of nozzle geometry on spray and combustion characteristics related to large two-stroke engine fuel injection systems, Fuel, 294 (2021) 120455. https://doi.org/10.1016/j.fuel.2021.120455
[14]. M. A. Quazi, S. K. Singh, M. Jadhao, Effect of piston bowl shape, swirl ratio and spray angle on combustion and emission in off road diesel engine, SAE Tech. Pap., 2015 (2015) 15.
[15]. S. J. M. Algayyim, A. P. Wandel, T. Yusaf, The impact of injector hole diameter on spray behaviour for butanol-diesel blends, Energies, 11 (2018) 1298. https://doi.org/10.3390/en11051298
[16]. AVL, AVL Fire Combustion user manual version 2022 - Combustion Module, AVL List GmbH: Austria, 2022.
[17]. AVL, FIRE_Emission user manual version 2022 - Emission Module, AVL List GmbH: Austria, 2022.
[18]. T. Q. Nguyen, Control the Combustion of Fuel Sprays in Power Plants, in 2021 International Conference on Engineering Management of Communication and Technology (EMCTECH), 2021, https://doi.org/10.1109/emctech53459.2021.9618982
[19]. A. Y. Dunin, N. T. Quynh, M. G. Shatrov, L. N. Golubkov, Analysis of the nozzle hole diameter effect to common rail diesel engine characteristics using a calculated model of an internal combustion engine, Int. J. Emerg. Trends Eng. Res., 8 (2020) 2301–2308. https://doi.org/10.30534/ijeter/2020/17862020
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Received
31/01/2023
Revised
10/04/2023
Accepted
12/04/2023
Published
15/05/2023
Type
Research Article
How to Cite
Thin Quynh, N., Duc Le, H., & Dunin, A. (1684083600). Influences of injector geometry parameters on fuel injection characteristics and parameters of a diesel engine. Transport and Communications Science Journal, 74(4), 530-543. https://doi.org/10.47869/tcsj.74.4.12
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