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Transmission Actuator for Tracked Vehicle
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik.
2019 (engelsk)Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
Abstract [en]

This master thesis objective is to reassess and evaluate a synchronization unit in a drivetrain, that are redeemed beneficial of an overall axial reduction. The drivetrain is at a concept level design, where a fully operational synchronization system for gear shifting is yet to be developed. 

Due to the limitation of design space, the required dissipation of stored rotational energy cannot be successfully completed by a traditional mechanical synchronizer as the active area for the friction discs are too small. It would result in severe wear rates of the discs, as well as the temperature rise would lead to material expansion and result in complete seizure of the synchronizer. 

With a theoretical ground written by S.T Razzacki (2004), a dual synchronization system has been designed in this thesis work. Where the dual system shares the task of dissipating the rotating energy throughout both traditional friction discs, and a secondary system, which converts mechanical- to electrical energy and are either stored or used in other vehicle components. If implemented, the systems allow for an axial length reduction, as well as reducing the number of individual components by 50%, compared to an earlier version of the synchronizer.

sted, utgiver, år, opplag, sider
2019. , s. 31
Emneord [en]
synchronization, gearbox, drivetrain, powertrain, actuator, tracked vehicle
HSV kategori
Identifikatorer
URN: urn:nbn:se:ltu:diva-74714OAI: oai:DiVA.org:ltu-74714DiVA, id: diva2:1326912
Eksternt samarbeid
BAE Systems Hägglunds
Fag / kurs
Student thesis, at least 30 credits
Utdanningsprogram
Mechanical Engineering, master's level
Presentation
2019-05-24, E234, Luleå Tekniska Universitet, Luleå, 15:40 (svensk)
Veileder
Examiner
Tilgjengelig fra: 2019-06-24 Laget: 2019-06-18 Sist oppdatert: 2019-06-24bibliografisk kontrollert

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