PhDRobertTurnbull.pdf (29.24 MB)

The effect of triboelastodynamics of rings on energy efficiency with particular focus on internal combustion engines

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posted on 01.01.2021, 00:33 by Rob Turnbull
High 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 University

Rights holder

© Robert Christopher Philip Turnbull

Publication date

2019

Notes

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 Rahnejat

Qualification name

PhD

Qualification level

Doctoral

This submission includes a signed certificate in addition to the thesis file(s)

I have submitted a signed certificate