Heat generation and heat consumption in engine of rapid internal combustion

Надіслано: Травень 22, 2018
Переглянуто: Червень 22, 2018
Прийнято: Червень 26, 2018
Lviv State University of Life Safety
Lviv Polytechnic National University

The research of heat generation and heat consumption in a conventional or ideal engine provides useful information about the regularities, character of the process and effectiveness of fuel combustion in any real engine that cannot be subject to experiments. This information is advantageous both in case of heat transformation effectiveness analysis and the development of means to improve already employed engine. The procedure (algorithm) of thermal processes modeling that take place in the internal combustion engines should be developed in a way that enables, according to measured pressure of working gases, to adequately reconstruct the course of heat generation, and vice versa, relying on a set course of heat generation, to veritably identify the change of gases pressure in the cylinder. Research aim – based on the principle of analogy and harmonious combination of induction and deduction to evaluate the possibility to represent in a formal way and theoretically generalize experimentally identified information about the regularities of heat generation and heat consumption processes development in Otto-cycle engines (engines of rapid internal combustion). As a rule in case of analytical identification of heat generation – heat consumption processes the index a of combustion capacity is defined in advance. The acquired information, however, demonstrates that there are more reasons to consider the value of the parameter m to be set in advance, rather than of the parameter a. The relation between values of heat emission maximal intensiveness and the time of its achievement in an empirical sense is seemingly parabolic. Theoretically, as it has been found out, it can be evidently treated as “fuzzy” hyperbolic. The fact that the engine’s idle run does not conform to the “hyperbolic” tendency manifests its considerable imperfection and does not contend against the theoretically substantiated regularity. Given, for example, that, it is possible to acknowledge that. While given, we will have to acknowledge that. Thus, if we assign in advance that we considerably limit the flexibility and preciseness of the identification algorism.

[1] N. Ninic, M. Grljušic, and M. Jelic, "Decomposition method as a new type of second law analysis of the combustion process of internal combustion engines", International Journal of Exergy, vol. 10, no. 1, pp. 1–20, 2012. https://doi.org/10.1504/IJEX.2012.045058

[2] E. Meeks, et al., "New modeling approaches using detailed kinetics for advanced engines", in Proc. 7th Int. Conf. on Modeling and Diagnostics for Advanced Engine Systems, COMODIA, 2008, pp. 469–474.

[3] C. V. Naik, et al., "Applying detailed kinetics to realistic engine simulation: The surrogate blend optimizer and mechanism reduction strategies", SAE International Journal of Engines, vol. 3, no. 1, pp. 241–259, 2010. https://doi.org/10.4271/2010-01-0541

[4] J. M. Borg, and A. C. Alkidas, "On the application of Wiebe functions to simulate normal and knocking spark-ignition combustion", International Journal of Vehicle Design, vol. 49, no. 1–3, pp. 52–69, 2009. https://doi.org/10.1504/IJVD.2009.024240

[5] J. I. Ghojel, "Review of the development and applications of the Wiebe function: A tribute to the contribution of Ivan Wiebe to engine research", International Journal of Engine Research, vol. 11, no. 4, pp. 297–312, 2010. https://doi.org/10.1243/14680874JER06510

[6] S. Hu, H. Wang, C. Yang, and Y. Wang, "Burnt fraction sensitivity analysis and 0-D modelling of common rail diesel engine using Wiebe function", Applied Thermal Engineering, Vol. 115, pp. 170–177, 2017. https://doi.org/10.1016/j.applthermaleng.2016.12.080

[7] "Kraftfahrzeugmotoren: Auslegung und Konstruktion / Herausgegeben von Volkmar Küntscher", Berlin, Germany: Verlag Technik, 1989. [in German].

[8] V. N. Lucanin, et al., "Dvigateli vnutrennego sgoraniya" ["Internal combustion engines"], in Theory of Workflows, vol. 1. Moscow, Russia: Vysshaya shkola Publ., 1995. [in Russian].

[9] P. Hashchuk, Т. Мys’kiv, and S. Nikipchuk, Avtomobil’ni dvyhuny. Teplovyy ta dynamichnyy rozrakhunok [Automobile engines. Thermal and dynamic calculation]. Lviv, Ukraine: Ukrayins’ki tekhnolohiyi Publ., 2006. [in Ukrainian].

[10] М. Zejliger, Dvigateli Dizel' povyshennoy moshchnosti [Diesel Engines of Increased Power]. Moscow, Russia: Moskovskoye akademicheskoye izdatel'stvo Publ., 1927. [in Russian].

[11] V. I. Chastuhin, and V. V. Chastuhin, Toplivo i teoriya goreniya [Fuel and combustion theory]. Кyiv, Ukraine: Vyshcha shkola Publ., 1989. [in Russian].

[12] B. N. Semenov, E. P. Pavlov, and V. P. Koptsev, Rabochiy protsess vysokooborotnykh dizeley maloy moshchnosti [Working process of high-speed diesel engines of low power]. Leningrad, Russia: Mashinostroenie Publ., 1990. [in Russian].

[13] B. A. Sharoglazov, M. F. Farafontov, and V. V. Klement'ev, Dvigateli vnutrennego sgoraniya: teoriya, modelirovanie i raschet protsessov [Internal combustion engines: theory, modeling and calculation of processes]. Chelyabinsk, Russia: YuUrGU Publ., 2004. [in Russian].

[14] P. Hashchuk, and Yu. Bohachyk, "Analitychni zasoby modeliuvannia protsesiv teplotvorennia-teplospozhyvannia v dvyhuni z yaskrovym zapaliuvanniam na yalovykh rezhymakh yoho roboty" ["Analytical means for simulation of heat production-heat consumption in an engine with ash ignition on the firing modes of its work"], Proektuvannia, vyrobnytstvo ta ekspluatatsiia avtotransportnykh zasobiv i poizdiv. Pratsi zakhidnoho naukovoho tsentru Transportnoi akademii nauk [Design, manufacture and operation of motor vehicles and trains. Proceedings of the Western Scientific Center of the Transport Academy of Sciences], vol. 1, pp. 34–51, 1995. [in Ukrainian].

[15] P. Hashchuk, and Yu. Bohachyk, "Osoblyvosti vnutrishnoho teploperenosu v dvyhuni z yaskrovym zapalenniam za riznykh navantazhen" ["Peculiarities of internal heat transfer in a motor with ascorbic inflammation at different loads"], Proektuvannia, vyrobnytstvo ta ekspluatatsiia avtotransportnykh zasobiv i poizdiv. Pratsi zakhidnoho naukovoho tsentru Transportnoi akademii nauk [Design, manufacture and operation of motor vehicles and trains. Proceedings of the Western Scientific Center of the Transport Academy of Sciences], vol. 2, pp. 12–15, 1995. [in Ukrainian].

[16] V. V. Vodolazhchenko, et al. Proyektirovaniye teplovoznykh dvigateley [Designing of diesel engines]. Moscow, Russia: Transport Publ., 1972. [in Russian].

[17] T. M. Melkumov, Teoriya bystrokhodnogo dvigatelya s samovosplameneniyem [Theory of a high-speed engine with self-ignition]. Moscow, Russia: Gosudarstvennoye izdatel'stvo oboronnoy promyshlennosti Publ., 1953. [in Russian].

[18] N. Kh. Dyachenko, et al. Bystrokhodnyye porshnevyye dvigateli vnutrennego sgoraniya [High-speed reciprocating internal combustion engines]. Moscow-Leningrad, Russia: Mashgiz, 1962. [in Russian].

[19] S. V. Nikipchuk, "Vyznachennya koefitsiyenta teploperedachi v dvyhuni pryvodu pozhezhno-ryatuval’noho obladnannya analitychnymy zasobamy" ["Determination of the coefficient of heat transfer in the engine of the drive of fire and rescue equipment by analytical means"], in Proc. Int. Scientific and Practical Conf. Fire and technogenic safety. Theory, practice, innovations, Lviv, Ukraine, October 20-21, 2016, pp. 433-435. [in Ukrainian].

[20] I. I. Wiebe, Brennverlauf und Kreisprozess von Verbrennungsmotoren [Burning process and cycle of internal combustion engines]. Berlin, Germany: VEB-Verlag Technik, 1970. [in Germany].

[21] P. M. Hashchuk,  and S. V. Nikipchuk, "Modelno-symuliatsiina tekhnolohiia doslidzhennia termodynamichnykh protsesiv u dvyhunakh vnutrishnoho zghoriannia” ["Model-simulation technology of the study of thermodynamic processes in internal combustion engines"], in Proc. 13th Int. Symposium of Ukrainian Mechanical Engineers, Lviv, Ukraine, May 18-19, 2017, pp. 93-95. [in Ukrainian].

[22] V. L. Rvachev, and V. O. Rvachov, Eksperymental’na matematyka: metodolohiya, problemy, praktyka [Experimental Mathematics: Methodology, Problems, Practice]. Kyiv, Ukraine: Znannya Publ., 1983. [in Russian].

P. Hashchuk, S. Nikipchuk, "Heat generation and heat consumption in engine of rapid internal combustion", Ukrainian Journal of Mechanical Engineering and Materials Science, vol. 4, no. 1, pp. 160-174, 2018.