@book{MTMT:2685247, title = {Járműtervezés és -vizsgálat alapjai}, url = {https://m2.mtmt.hu/api/publication/2685247}, isbn = {9789632796505}, author = {Eleőd, András and Márialigeti, János}, editor = {Devecz, János}, publisher = {Typotex Kiadó}, unique-id = {2685247}, year = {2012} } @book{MTMT:2269920, title = {Jármű- és hajtáselemek I.. Egyetemi tananyag}, url = {https://m2.mtmt.hu/api/publication/2269920}, isbn = {9789632795966}, author = {Bider, Zsolt and Borbás, Lajos and Eleőd, András and Lovas, László and Márialigeti, János and Rácz, Péter and László, G and Szalai, Péter}, editor = {Devecz, János}, publisher = {Typotex Kiadó}, unique-id = {2269920}, year = {2012}, orcid-numbers = {Lovas, László/0000-0001-6710-9084} } @book{MTMT:2660772, title = {Műszaki ábrázolás II.. egyetemi BSc jegyzet}, url = {https://m2.mtmt.hu/api/publication/2660772}, author = {Bándy, Alajos and Barta, Miklós and Nyitrai, János and Sváb, János and Török, István and Klementis, Csilla and Devecz, János and Cseke, József and Eleőd, András and Márialigeti, János and Nyolcas, Mihály}, editor = {Lovas, László}, publisher = {Budapest University of Technology and Economics}, unique-id = {2660772}, year = {2010}, orcid-numbers = {Lovas, László/0000-0001-6710-9084} } @article{MTMT:2658046, title = {Face dog clutch engagement at low mismatch speed}, url = {https://m2.mtmt.hu/api/publication/2658046}, author = {Bóka, Gergely and Márialigeti, János and Lovas, László and Trencséni, Balázs}, doi = {10.3311/pp.tr.2010-1.06}, journal-iso = {PERIOD POLYTECH TRANSP ENG}, journal = {PERIODICA POLYTECHNICA TRANSPORTATION ENGINEERING}, volume = {38}, unique-id = {2658046}, issn = {0303-7800}, abstract = {Face dog clutches regain popularity in heavy duty AMT's. Though the reduction of the speed difference between the dogs is the key to a smooth gear shift, the excellent engaging capability is experienced to degrade at low mismatch speed and the outcome of the engagement process becomes uncertain. Using a simple mechanical model, that uncertainty is described and the probability of the successful engagement is given as a function of the initial mismatch speed. Results are validated through statistical evaluation of measurement data. © Periodica Polytechnica 2010.}, year = {2010}, eissn = {1587-3811}, pages = {29-35}, orcid-numbers = {Lovas, László/0000-0001-6710-9084} } @article{MTMT:2655269, title = {Engagement capability of face dog clutches on heavy duty automated mechanical transmissions with transmission brake}, url = {https://m2.mtmt.hu/api/publication/2655269}, author = {Bóka, Gergely and Lovas, László and Márialigeti, János and Trencséni, Balázs}, doi = {10.1243/09544070JAUTO1435}, journal-iso = {P I MECH ENG D-J AUT}, journal = {PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING}, volume = {224}, unique-id = {2655269}, issn = {0954-4070}, abstract = {This paper focuses on the engagement process of face-dog clutches on heavy duty automated mechanical transmissions (AMTs) considering special engagement conditions caused by the actuation of an electro-pneumatic transmission brake. A dynamic model of the transmission brake-single face-dog clutch system is developed and the engagement probability map characterizing the engagement capability of face-dog clutches under different engagement conditions is determined through numerical simulations for different gears of a given AMT. A region of engagement conditions is recognized where the engagement of the face-dog clutch is not ensured. Parameters influencing that region are highlighted. Optimal engagement conditions providing major gearshift comfort are given for the cases of stopped and moving vehicles. Simulation results are partly validated through statistical evaluation of measurement data obtained from a series of measurements performed on a gearbox test bench.}, year = {2010}, eissn = {2041-2991}, pages = {1125-1139}, orcid-numbers = {Lovas, László/0000-0001-6710-9084} } @article{MTMT:2649372, title = {Automatizált nehéz haszonjármű sebességváltó elektro-pneumatikus előtéttengelyfékének modellezése}, url = {https://m2.mtmt.hu/api/publication/2649372}, author = {Bóka, Gergely and Lovas, László and Márialigeti, János and Trencséni, Balázs}, journal-iso = {GÉP}, journal = {GÉP}, volume = {60}, unique-id = {2649372}, issn = {0016-8572}, abstract = {The main stage of a heavy duty Automated Manual Transmission (AMT)usually has face dog clutches instead of synchromesh accomplishing synchronization by transmission control. A multi-disk transmission brake is installed to brake down gearbox shafts at upshifts. The goal of this paper is to develop the dynamic model of an electro-pneumatic countershaft brake including parameter identification and model validation.}, year = {2009}, pages = {18-21}, orcid-numbers = {Lovas, László/0000-0001-6710-9084} } @article{MTMT:2644601, title = {External synchronization strategies for automated mechanical transmissions with face dog clutch and countershaft brake}, url = {https://m2.mtmt.hu/api/publication/2644601}, author = {Bóka, Gergely and Márialigeti, János and Lovas, László and Trencséni, Balázs}, journal-iso = {SCI BULL SERIES C}, journal = {SCIENTIFIC BULLETIN SERIES C: FASCICLE MECHANICS, TRIBOLOGY, MACHINE MANUFACTURING TECHNOLOGY}, volume = {23}, unique-id = {2644601}, issn = {1224-3264}, abstract = {Having the efficiency of a manual gearbox and the advantages of the automation of the gear shifting process, automated manual transmissions (AMT’s) are getting more and more popular among the heavy duty commercial vehicles. Features like external engine control, auxiliary engine brake and countershaft brake for external synchronization are introduced to minimize the length of torque interruption during the gear shifting process. This paper first highlights the possibility and advantages of using dog clutches instead of synchromesh mechanisms. A short analysis of the engagement process is given based on measurements, with respect to the speed difference at the moment of engagement, showing the existence of an optimal speed difference. As a main topic, the external synchronization is described. Strategies for synchronization are developed for stopped, moving and slowly moving vehicle. Restrictions for the reachable speed differences are given, showing that the low idle speed of the engine, the inner ratios of the gearbox and the possible speed differences are not independent from each other.}, year = {2009}, pages = {75-80} } @article{MTMT:2644600, title = {Design of a 5-speed motorbike gearbox}, url = {https://m2.mtmt.hu/api/publication/2644600}, author = {Lovas, László and Márialigeti, János}, journal-iso = {SCI BULL SERIES C}, journal = {SCIENTIFIC BULLETIN SERIES C: FASCICLE MECHANICS, TRIBOLOGY, MACHINE MANUFACTURING TECHNOLOGY}, volume = {23}, unique-id = {2644600}, issn = {1224-3264}, abstract = {The popularity of oldtimer motorbike races in solo and with sidecar increases in Hungary. Most of the racers use hungarian made single cylinder Pannonia motorbike. The racers complain of the slow shiftability of the gearbox. Sidecar drivers complain of inappropriate distribution of the gear speeds. New parts for these old gearboxes do not exist. Thus, a need exists for improving them. Instead of refabricating the old gearbox parts and keeping the shifting and gear distribution problems, a new gearbox design is proposed. It has more gear speeds and it fits in the original engine block without any transformation. The shiftability and gear speed distribution is improved. The state of the work is presented.}, year = {2009}, pages = {215-220} } @{MTMT:2637173, title = {Gépszerkesztéstani alapismeretek. 1.1 és 1.2 fejezet}, url = {https://m2.mtmt.hu/api/publication/2637173}, author = {Márialigeti, János}, booktitle = {Gépelemek}, unique-id = {2637173}, year = {2007}, pages = {9-69} } @article{MTMT:2634069, title = {Study of toothed belt transmission in case of varying angular velocity}, url = {https://m2.mtmt.hu/api/publication/2634069}, author = {Lovas, László and Daniel, Play and Márialigeti, János}, journal-iso = {SCI BULL SERIES C}, journal = {SCIENTIFIC BULLETIN SERIES C: FASCICLE MECHANICS, TRIBOLOGY, MACHINE MANUFACTURING TECHNOLOGY}, volume = {21}, unique-id = {2634069}, issn = {1224-3264}, year = {2007}, pages = {427-432} }