Thesis topic proposal
László Lovas
Study of the gearbox layout on gear shiftability


Institute: Budapest University of Technology and Economics
transportation and vehicle engineering
Kálmán Kandó Doctoral School of Transportation and Vehicle Engineering

Thesis supervisor: László Lovas
Location of studies (in Hungarian): Department of Vehicle Elements and Vehicle-Structure Analysis
Abbreviation of location of studies: JSZT

Description of the research topic:

These days the automated manual transmissions (AMT) become more and more popular in Europe. During the gearshift, the engagement of the gears is realized by a synchromesh system, whose core is a spline clutch. The shiftability of a spline clutch depends on many properties of the gearbox and the actuating system. Three main subsystems must be studied in details: the gear system in the gearbox, the actuating system and the transmission of the power from the gearbox to the wheels.
Study of the shifting mechanism has been started at the department 10 years ago. PhD thesis and MSc diplomas have been realized on synchromesh behavior and spline clutch shiftability.

Goal of the research:
Study of the effect of the gearbox architecture on shiftability. Building of a numerical model to help the gearbox design, regarding the shiftability.

Work to be done:
Survey of the scientific literature: 1 year
Numerical model building: 1,5 year
Simulations, study and discussion of the results 1 year
Writing the thesis: 0,5 year

Expected scientific results:
New numerical model helping the gearbox design.

Required language skills: English
Recommended language skills (in Hungarian): German or French
Further requirements: 
- good knowledge of 3D CAD systems
- good knowledge of Matlab
- good programming skills (Matlab, C#…)
- fluent German or French is an advantage

Number of students who can be accepted: 1

Deadline for application: 2018-07-05

All rights reserved © 2007, Hungarian Doctoral Council. Doctoral Council registration number at commissioner for data protection: 02003/0001. Program version: 2.2358 ( 2017. X. 31. )