PhDRobertTurnbull.pdf (29.24 MB)
Download fileThe effect of triboelastodynamics of rings on energy efficiency with particular focus on internal combustion engines
thesis
posted on 2021-01-01, 00:33 authored by Rob TurnbullHigh performance, fuel efficiency, and noise and vibration refinement are key customer desired attributes for vehicular powertrain systems, including engines. Energy efficiency and reduced emissions have become even more important with the drive for sustainability and environmental protection with increasingly stringent legislation. Powertrain systems, such as internal combustion engines and their sub-systems, such as bearings, are utilised in a large number of applications/systems. Therefore, improving energy efficiency in their use is particularly important. In the case of internal combustion engines, significant frictional and power losses occur from piston compression rings. These losses are disproportional to the sizes of these small components. Therefore, much attention has been devoted to the study of compression ring behaviour. Similarly, the ideal function of bearings is dictated by both thermal and elastic distortions of their raceways.This thesis presents multi-physics integrated models for thin and thick rings, representative of piston compression rings and bearing races respectively. [Continues.]
History
School
- Mechanical, Electrical and Manufacturing Engineering
Publisher
Loughborough UniversityRights holder
© Robert Christopher Philip TurnbullPublication date
2019Notes
A doctoral thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.Language
- en
Supervisor(s)
Ramin Rahmani ; Homer RahnejatQualification name
- PhD
Qualification level
- Doctoral
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Keywords
RingsRingTribologyefficiencyemissionsBearingsinternal combustion enginestribologyringsringGas blow-bybearingsball bearingsElastodynamicselastodynamicsPiston RingPiston ringsPiston ring lubricationpiston ring lubricationpiston ringspiston ringlubrication regimesboundary frictionboundary friction forceboundary friction regimeMixed Lubricationin-planeout-of-planedynamicsthin ringsthick ringsfrictionFrictionhydrodynamic frictionMechanical Engineering not elsewhere classified