TY - JOUR AU - Dobi-Szakál, Gyöngy AU - Szalontai, Péter AU - Lukács, Kristóf László AU - Meggyes, Attila AU - Bereczky, Ákos TI - Hidrogénbekeverési kísérletek energiatermelés céljára gázmotorokban [Hydrogen blending tests for power generation in gas engines] JF - MAGYAR ENERGETIKA J2 - MAGYAR ENERGETIKA VL - 30 PY - 2023 IS - 1 SP - 2 EP - 6 PG - 5 SN - 1216-8599 UR - https://m2.mtmt.hu/api/publication/34037353 ID - 34037353 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Lukács, Kristóf László AU - Hujber, Ottó AU - Bereczky, Ákos TI - Oxy-fuel tüzelés vizsgálata gázmotor alapú P2G rendszerű metán előállító technológia számára JF - ENERGIAGAZDÁLKODÁS J2 - ENERGIAGAZDÁLKODÁS VL - 64 PY - 2023 IS - 1-2 SP - 2 EP - 7 PG - 6 SN - 0021-0757 UR - https://m2.mtmt.hu/api/publication/34512551 ID - 34512551 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Lukács, Kristóf László AU - Meggyes, Attila AU - Bereczky, Ákos TI - Belsőégésű motorokkal kapcsolatos kutatások az Energetikai Gépek és Rendszerek Tanszéken JF - ENERGIAGAZDÁLKODÁS J2 - ENERGIAGAZDÁLKODÁS VL - 64 PY - 2023 IS - különszám SP - 20 EP - 23 PG - 4 SN - 0021-0757 UR - https://m2.mtmt.hu/api/publication/34023883 ID - 34023883 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Bereczky, Ákos AU - Lukács, Kristóf László AU - Szabados, György ED - Barabás, István TI - 1-butanol tüzelőanyag és vizsgálata T2 - XXX. Nemzetközi Gépészeti Konferencia - OGÉT 2022 PB - Erdélyi Magyar Műszaki Tudományos Társaság (EMT) C1 - Kolozsvár T3 - Nemzetközi Gépészeti Találkozó (OGÉT), ISSN 2068-1267 ; 30. PY - 2022 SP - 195 EP - 200 PG - 6 UR - https://m2.mtmt.hu/api/publication/32792951 ID - 32792951 LA - Hungarian DB - MTMT ER - TY - CONF AU - Szabados, György AU - Žaglinskis, Justas AU - Lukács, Kristóf László AU - Bereczky, Ákos ED - Barabás, István TI - Különböző gázolaj-biodízel-metanol keverékek dízelmotor üzemére gyakorolt hatásának vizsgálata T2 - XXX. Nemzetközi Gépészeti Konferencia - OGÉT 2022 PB - Erdélyi Magyar Műszaki Tudományos Társaság (EMT) C1 - Kolozsvár T3 - Nemzetközi Gépészeti Találkozó (OGÉT), ISSN 2068-1267 ; 30. PY - 2022 SP - 250 EP - 255 PG - 6 UR - https://m2.mtmt.hu/api/publication/32792932 ID - 32792932 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Szabados, György AU - Lukács, Kristóf László AU - Bereczky, Ákos TI - Investigating Combustion Process of N-Butanol-Diesel Blends in a Diesel Engine with Variable Compression Ratio JF - CLEAN TECHNOLOGIES J2 - CLEAN TECHNOL VL - 3 PY - 2021 IS - 3 SP - 618 EP - 628 PG - 11 SN - 2571-8797 DO - 10.3390/cleantechnol3030037 UR - https://m2.mtmt.hu/api/publication/32151958 ID - 32151958 N1 - Doctoral School of Multidisciplinary Sciences, Széchenyi István University, Egyetem tér 1, Győr, 9026, Hungary Department of Energy Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, 1111, Hungary Cited By :1 Export Date: 14 June 2022 Correspondence Address: Szabados, G.; Doctoral School of Multidisciplinary Sciences, Egyetem tér 1, Hungary; email: szabados.gyorgy.gergo@ga.sze.hu Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA Funding details: Innovációs és Technológiai Minisztérium Funding text 1: Acknowledgments: The research reported in this paper and carried out at the Budapest University of Technology and Economics has been supported by the National Research Development and Innovation Fund (TKP2020 National Challenges Subprogram, Grant No. BME-NCS) based on the charter of bolster issued by the National Research Development and Innovation Office under the auspices of the Ministry for Innovation and Technology. Funding text 2: Funding: This research was funded by the National Research Development and Innovation Office under the auspices of the Ministry of Innovation and Technology. AB - The search for alternative fuels for internal combustion engines is ongoing. Among the alternatives, plant-based fuels can also be mentioned. Alcohol is not a common fuel for diesel engines because the physical and chemical properties of the alcohols are closer to those of gasoline. In our research, the combustion properties of diesel-n-butanol mixtures have been investigated to obtain results on the effect of butanol blending on combustion. Among the combustion properties, ignition delay, in-cylinder pressure, and heat release rate can be mentioned. They have been observed under different compression conditions on an engine on which the compression ratio can be adjusted. The method used was a quite simple one, so the speed of the engine was set to a constant 900 rpm without load, while three compression ratios (19.92, 15.27, and 12.53) were adjusted with a fuel flow rate of 13 mL/min and the pre-injection angle of 18° BTDC. Blending butanol into the investigated fuel does not significantly affect maximal values of indicated pressure, while much more effect on the pressure rising rate can be detected. Furthermore, heat release rate and ignition delay increased at every compression ratio investigated. Despite the low blending rates of butanol in the mixtures, butanol significantly affects the combustion parameters, especially at high compression ratios. LA - English DB - MTMT ER - TY - CHAP AU - Szabados, György AU - Žaglinskis, Justas AU - Lukács, Kristóf László AU - Bereczky, Ákos ED - Čedík, Jakub ED - Pexa, Martin ED - Valera, Hardikk ED - Agarwal, Avinash Kumar TI - Combustion and Emission Analyses of a Diesel Engine Running on Blends with Methanol T2 - Methanol PB - Springer-Verlag Singapore CY - Singapore SN - 9789811612794 T3 - Energy, Environment, and Sustainability (ENENSU), ISSN 2522-8366 PY - 2021 SP - 141 EP - 172 PG - 32 DO - 10.1007/978-981-16-1280-0_6 UR - https://m2.mtmt.hu/api/publication/32034747 ID - 32034747 N1 - Department of Internal Combustion Engines and Propulsion Technology, Széchenyi István University, Egyetem tér 1, Győr, 9026, Hungary Waterborne Transport and Air Pollution Laboratory, Marine Research Institute, Klaipeda University, Universiteto ave. 17, Klaipeda, 92294, Lithuania Department of Energy Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, 1111, Hungary Export Date: 31 August 2022 Correspondence Address: Szabados, G.; Department of Internal Combustion Engines and Propulsion Technology, Egyetem tér 1, Hungary; email: szabados.gyorgy.gergo@ga.sze.hu AB - The ambient air around us is continuously and increasingly loaded and polluted through emission that comes from different sectors, especially from the transportation sector. This fact is due to the growing energy consumption in the transport sector which is forecasted worldwide in the nearer and far future. Bio-based energy may be consumed in an increasing way in the sector until 2050. Methanol, and if it is produced on bio-basis, called bio-methanol, is the simplest alcohol. Methanol costs less than other automotive alternative alcohols, for example, ethanol or butanol, so it may be among the cheapest technical alcohols. As for methanol’s structure, it contains 30% more inherent oxygen on a molecular base than fossil diesel. The aim of this research is to give comprehensive overview about the methanol’s effect on the combustion and emission properties of a diesel engine. During the analyses of combustion and emission characteristics the most relevant parameters have been included. The study also contains calculations regarding theoretical combustion (oxidation process) of the different hydrogen-carbons. A rarely investigated parameter, O2 consumption or demand is also in focus, besides CO2 emission and intensity throughout the calculations. For our experimental test series, diesel fuel was the base fuel and it has been mixed with biodiesel first, and this mixture has been further blended with methanol. Methanol’s theoretical contribution to the diesel–biodiesel blend’s O2 consumption and CO2 emission is a small amount. Engine’s external parameters have not changed significantly if it is running on blend with methanol. Methanol has rather affected the combustion and emission properties of the engine more significantly. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. LA - English DB - MTMT ER - TY - JOUR AU - Žvirblis, Tadas AU - Vainorius, Darius AU - Matijošius, Jonas AU - Kilikevičienė, Kristina AU - Rimkus, Alfredas AU - Bereczky, Ákos AU - Lukács, Kristóf László AU - Kilikevičius, Artūras TI - Engine Vibration Data Increases Prognosis Accuracy on Emission Loads: A Novel Statistical Regressions Algorithm Approach for Vibration Analysis in Time Domain JF - SYMMETRY (BASEL) J2 - SYMMETRY-BASEL VL - 13 PY - 2021 IS - 7 SP - 1234 PG - 20 SN - 2073-8994 DO - 10.3390/sym13071234 UR - https://m2.mtmt.hu/api/publication/32099342 ID - 32099342 N1 - Department of Mechanical and Material Engineering, Vilnius Gediminas Technical University, Vilnius, LT-03224, Lithuania Institute of Mechanical Science, Vilnius Gediminas Technical University, Vilnius, LT-03224, Lithuania Department of Automobile Engineering, Vilnius Gediminas Technical University, Vilnius, LT-03224, Lithuania Department of Energy Engineering, Budapest University of Technology and Economics, Budapest, H-1111, Hungary Cited By :1 Export Date: 15 June 2022 Correspondence Address: Matijošius, J.; Institute of Mechanical Science, Lithuania; email: jonas.matijosius@vilniustech.lt Funding details: Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, NKFIH Funding details: Innovációs és Technológiai Minisztérium Funding text 1: Funding: The research reported in this paper and carried out at the Budapest University of Technology and Economics has been supported by the National Research Development and Innovation Fund (TKP2020 National Challenges Subprogram, Grant No. BME-NCS) based on the charter of bolster issued by the National Research Development and Innovation Office under the auspices of the Ministry for Innovation and Technology. LA - English DB - MTMT ER - TY - CONF AU - Bereczky, Ákos AU - Lukács, Kristóf László AU - Khan, Zoraze ED - Gasparik, J. ED - Masek, J. ED - Camaj, J. ED - Zitricky, V. TI - Investigation of methanol utilization in Ci engines T2 - Horizons of Railway Transport 2018, 10th Year of International Scientific Conference PB - EDP Sciences C1 - Les Ulis T3 - MATEC Web of Conferences, ISSN 2261-236X ; 235. PY - 2018 PG - 5 DO - 10.1051/matecconf/201823500036 UR - https://m2.mtmt.hu/api/publication/32632198 ID - 32632198 AB - The decrease in the fossil fuel resources and more rigid emission standards make the necessity to look for new fuels and technologies. One of the possible fuels can be the different alcohols. The oxygen content of the alcohols can improve the combustion process and reduce the emission rates of incomplete combustion products. The blending methanol (M) and ethanol (E) with diesel fuel is limited by separation. This article shows the research results and analysis of two typical solutions. First are blends of stabilized rape seed methyl ester (RME) to prevent the phase separation. The tests are carried out on a conventional TDI engine (VW 1Z) at different speeds and loads. Experimental results indicate that the addition of 10% methanol to 80% Diesel and 30% of FAME blend increased the unburned hydrocarbon (THC) with 60%, decreased CO emission with near 4% and the particulate emission (PM) with near 30%, the NOx emissions were near the same. The other technology is the dual fuel method. In this case, different amount of methanol is injected into the intake manifold. The tests are carried out with a conventional DI engine (IVECO AIFO 8031) at constant speeds and different loads and energy ratios. Experimental results indicate that the increase of energy ratio of the methanol at full load decreased NOx emission with up to 60% and the particulate emission (PM) up to 90%, while the CO and THC emissions increased extremely mainly at part loads. © 2018 The Authors, published by EDP Sciences. LA - English DB - MTMT ER - TY - CHAP AU - Lennox, Siwale AU - Lukács, Kristóf László AU - Török, Ádám AU - Bereczky, Ákos AU - Mbarawa, Makame AU - Penninger, Antal AU - Kolesnikov, Andrei TI - n-Butanol-Diesel (D2) Blend Fired in a Turbo-Charged Compression Ignition Engine: Performance and Combustion Characteristics T2 - Improvement Trends for Internal Combustion Engines PB - InTech CY - Rijeka SN - 9789535138921 PY - 2018 SP - 37 EP - 50 PG - 14 DO - 10.5772/intechopen.72879 UR - https://m2.mtmt.hu/api/publication/31374043 ID - 31374043 LA - English DB - MTMT ER -