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References AMESim™ Numerical Code, retrieved in: https://www.plm.automation.siemens.com/en/products/lms/imagine-lab/amesim/ Apostolescu, N., & Chiriac, R. (1998). The combustion process inside the internal combustion engines. Fuels Economy. Emissions limitation. Bucharest/Romania: Technical Press. AVL BOOST™ Combustion and Emissions, retrieved in: https://www.avl.com/simulationsolutions-for-construction-equipment/-/asset_publisher/gYjUpY19vEA8/content/avl-boostcombustion-and-emissions Catia v5.R20, retrieved in: https://www.3ds

Abstract

The paper analyses some phenomena affecting the cam-follower contact conditions, highlights some detrimental influences over the lubrication regime in this contact. The analysis of the theoretical model revealed the significant influence of thermal and starvation effects on the reduction of film thickness. To avoid these negative phenomena and in order to improve the lubrication regime we propose an original technical solution by using additional oil feed with oil jets, directed over the contact area.

References 1. Korczewski Z.: An entropy function application within the selection process of diagnostic parameters of marine diesel and gas turbine engines. Polish Maritime Research, 2(65)/2010, Vol.17, p. 29-35. 2. Korczewski Z.: Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines. Part III. Diagnostic and operating tolerances. Polish Maritime Research, No. 4(71)/2011, Vol.18, p. 49-53. 3. Korczewski Z.: Analysing possible use of the diagnostic model of internal combustion engine piston-crankshaft systems and evaluating

References [1] Cordier, M., et al., Increasing Modern Spark Ignition Engine Efficiency , SAE Technical Paper 2016-01-2172. [2] Basshuysen, R., Schäfer, F., Handbuch Verbrennungsmotor, Grundlagen, Komponenten, Systeme, Perspektiven , SAE International 2004. [3] Ferguson, C. R., Internal combustion engines , Applied Thermo-Sciences, John Wiley & Sons Inc., 1986. [4] Köhler, E., Verbrennungsmotoren, Motormechanik , Berechnung und Auslegung des Hubkolbenmotors Vieweg Fachbuch, Wiesbaden 2002. [5] Miao, Y., et al., Industrial Processes: Data Reconciliation and

References [1] Chalet, D., Lesage, M., Cormerais, M., Marimbordes, T., Nodal modelling for advanced thermal management of internal combustion engine , Applied Energy, Vol. 190, pp. 99-113, 2017. [2] Ghenaiet, A., Carcasci, C., Cerdoun, M., An approach for the thermal analysis of internal combustion engines’ exhaust valves , Applied Thermal Eng., Vol. 102, pp. 1095-1108, 2016. [3] Haller, P., Jankowski, A., Kolanek, C., Magdziak-Tolkiewicz, M., Wróbel, R., Impact Analysis of Air Humidity on Operating Parameters of Diesel Engine , Journal of KONES, Vol. 22, No

, V., Atkinson Cycle and Very High-Pressure Turbocharging for Increasing Internal Combustion Engines Efficiency and Power while Reducing Emissions , IMECE International Mechanical Engineering Congress & Exposition, Denver, USA 2011. [8] Graba, M., Identyfikacja systemu recyrkulacji spalin silnika o zapłonie samoczynnym , praca doktorska, Politechnika Opolska, Opole 2014. [9] Graba, M., Bieniek, A., i in., Zasilanie silników wysokoprężnych pojazdów pozadrogowych , Ofic. Wydaw. PO, 2012. [10] Hennek, K., Bieniek, A., Mamala, J., Graba, M., Nitrogen Oxides Emission

Aeronautics BK, Warsaw 2008. Girtler J.: Energy-based aspect of machine diagnostics . (in Polish) Diagnostyka Nr 1(45)/2008. Wyd. Polskie Towarzystwo Diagnostyki Technicznej, Warsaw 2008. Girtler J.: Work of a compression-ignition engine as the index of its reliability and safety . II International Scientifically-Technical Conference EXPLO-DIESEL & GAS TURBINE'01. Conference Procedings. Gdansk-Miedzyzdroje-Copenhagen, 2001. Piotrowski I., Witkowski K.: Operation of marine internal combustion engines . (in Polish) AM, Gdynia 2002. Rosłanowski J.: Identification of ships

References Firkowicz S.: Statistic evaluation of quality and reliability of electron tubes (in Polish). WNT, Warszawa 1963. Girtler J.: a method for evaluating the performance of a marine piston internal combustion engine used as the main engine on a ship during its voyage in different sailing conditions Polish Maritime Research. Vol. 17, iss. 4(67), 2010. Girtler J.: Physical aspect of application and usefulness of semi-Markovian processes for modelling the processes occurring in operational phase of technical objects. Polish Maritime Research. 2004 nr 3

Abstract

The paper presents an analysis of implementation of CHP plants based on internal combustion engines at different industrial companies. The authors have presented general aspects regarding utilization of internal combustion engines for cogeneration. There have been presented different possibilities of classification of internal combustion engines. Further on authors have presented different possibilities for increasing the efficiency of internal combustion engines, including: supercharging compression ratio increase, advanced heat recuperation for combined production of heat and power. There have also been presented different measures for increasing energy efficiency on site, including measures for CHP plant and internal combustion engines and measures for other auxiliary equipment and measures for technological equipment. In the second part of the paper authors have presented three case studies of utilization of internal combustion engines at a cogeneration plant for different industrial companies: cogeneration plant at a company from pharmaceutical sector, cogeneration plant at a beer production company and cogeneration plant at a company of electrical insulation materials. The results of the analysis led to following conclusions: implementation of cogeneration solutions based on internal combustion engines lead to significant financial savings, implementation of cogeneration solutions based on internal combustion engines can also lead to reducing environmental impact, it ensures higher global energy production efficiency and higher power efficiency compared to National Power System and to separate power and heat generation, it can lead to increased safety in energy supply of the company, it can also increase the reliability of power supply in cases of National Power Grid faults.

für zukünftige Anforderungen an schnellaufenden Dieselmotor, MTZ 56(11): 648-655, 1995. [5] Heywood, J. B. Internal combustion engine fundamentals . McGraw-Hill Publishing, New York 1988. [6] Sabau, A., Barhalescu, M., Oanta, E., Modelling of high pressure fuel injection systems , Annals of DAAAM for 2012 & Proceedings of the 23rd International DAAAM Symposium Vol. 23, No. 1, 2011. [7] Chiavola, O., Giulanelli, P., Modelling and Simulation of Common rail Systems , SAE Technical Paper Series 2001-01-3183, 2001. [8] Lino, P., Maione, B., Rizzo, A., Nonlinear