11th International Scientific Conference Research and Development of Mechanical Elements and Systems IRMES (2025) [pp. 33-38]
AUTHOR(S) / АУТОР(И): Sanjin TROHA 
, Jelena STEFANOVIĆ MARINOVIĆ , Željko VRCAN , Kristina MARKOVIĆ , Marko PERIĆ
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DOI: 10.46793/IRMES25.033T
ABSTRACT / САЖЕТАК:
The gearbox has been designed as a two-carrier unit with two brakes, and it has been depicted using the Wolf-Arnaudov symbols. The ideal torque ratios for six pairs of reversing gear ratios have been determined and the relationship between the ideal torque ratios of both planetary gear setsrequired for obtaining reversible transmission ratios was determined. The efficiencies were determined for all considered cases. It was determined that the gearbox has relatively high parasitic power in all cases of operation with the brake Br2 active, and the parasitic power function and its intensity were determined. The procedure was performedassuming two constant component gear train efficiencies, namely η0 = 0.98 and 0.95.
KEYWORDS / КЉУЧНЕ РЕЧИ:
planetary gearbox, reversing gearbox, parasitic power, two-carrier planetary gear train
ACKNOWLEDGEMENT / ПРОЈЕКАТ:
This research was financially supported by the University of Rijeka, projects number uniri-iskusni-tehnic-23-298 and uniri-iskusni-tehnic-23-168.
This research was financially supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (Contract No. 415-03-137/2025- 03/200109).
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