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A multi-physics, multi-scale investigation of the piston ring pack

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conference contribution
posted on 20.07.2017, 09:50 by Rickie Bewsher, Mahdi Mohammadpour, Gunter Offner
It is essential for the automotive industry to improve efficiency and mitigate frictional losses in IC engines. About 20-25% of these frictional losses arise as a result of the piston ring pack-liner assembly. By reducing the friction, there is potential to improve fuel consumption and emissions. This paper conducts a multi-physics, multi-scale investigation for the piston ring to cylinder liner conjunction, analysing the fundamental tribology, asperity interactions and boundary conditions. A 2D hydrodynamic model has been created based on Reynolds equation for a piston ring – cylinder liner conjunction. The model uses a finite difference method, calculating friction and the minimum film thickness over a 4-stroke engine cycle.


This research was supported by the Engineering and Physical Sciences Research Council (EPSRC) and AVL List.



  • Mechanical, Electrical and Manufacturing Engineering

Published in

7th International Conference on “Experiments/Process/System Modeling/Simulation/Optimization”


BEWSHER, S.R., MOHAMMADPOUR, M. and OFFNER, G., 2017. A multi-physics, multi-scale investigation of the piston ring pack. Presented at the 7th International Conference on Experiments/Process/System Modeling/Simulation/Optimization, Athens, Greece, 5-8th July.


Learning Foundation in Mechatronics


SMUR (Submitted Manuscript Under Review)

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This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at:

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Athens, Greece