Research and development of combustion engine for micro - cogeneration unit

• Autorzy: Polóni M. , Lach J. , Chríbik A.
• Języki publikacji: EN

Abstrakty

EN

The paper deals with research and development of original small-size internal combustion engine Lombardini LGW 702. This engine was optimised for application in micro-cogeneration unit (MCU), equipped with variable-speed generator and electronic converter. The electronically controlled combustion engine in MCU works in a regime depending on the load of the generator. It has the lowest possible number of revolutions and minimum possible fuel consumption. The generator combines directly with the crankshaft of the engine. To reach stable parameters of the network, the power electronics controls and processes the variable frequency of the generator. A combustion engine powered by natural gas can utilise also a blend of natural gas and hydrogen and other alternative fuels produced from renewable sources of energy, e.g. synthesis gases. A comparison of engine parameters was made, namely parameters of engines powered by the above-mentioned alternative fuels, such as syngas, coke-oven gas, landfill gas, sewer gas, Hythane and natural gas. A new three-phase variable-speed generator and converter for micro-cogeneration unit were developed. The rated electric power of MCU is 4 kW. The power overload is 80%, compared to rated power. In the case of natural gas, the best electric efficiency is 25%, the thermal efficiency is 65% and the total efficiency of MCU is more than 90%.

Słowa kluczowe

EN

combustion engine optimisation; micro-cogeneration unit; alternative fuels

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2012
• Tom: Vol. 19, No. 2
• Strony: 411--422
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Polóni M.

autor

Lach J.

autor

Chríbik A.

• Slovenská Technická Univerzita (STU) v Bratislave Strojnícka fakulta Námestie slobody 17, 812 31 Bratislava, Slovakia tel.:[phone],

Bibliografia

• [1] Research and Development of Microcogeneration Unit, Applied research for the Slovak Research and Development Agency under the contract no. APVV-0270-06, Bratislava, Slovakia.
• [2] Polóni, M., Lach, J., Kálman, P., Daniž, M., The engine Lombardini LGW 702 with optimised valve timing and intake manifold, Research report. Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering. Research report, (in Slovak language), May 2008.
• [3] Polóni, M., Kálman, P., Lach, J., Smieško, Š., Lazar, L., Kunc, P., Jančošek, L'., Microcogeneration Unit with Variable–Speed Generator. International Scientific Event Power Engineering 2010, Tatranské Matliare, High Tataras, Slovak Republic. 9th International Scientific Conference: Energy-Ecology-Economy (EEE), Proceedings on CD, Paper address: CD/files/EEE/5/4, 22 p., 2010.
• [4] Polóni, M., Kálman, P., Lach, J., Smieško, Š., Lazar, L., Kunc, P., Jančošek, L'., Isteník, R., Research and development of micro-cogeneration unit, Final research report, ÚDTKDivision of automobiles, ships and combustion engines, Faculty of Mechanical Engineering STU in Bratislava, 194 p., In the frame of contract no. APVV-0270-06, (in Slovak language), July 2010.