Friction and wear of a piston ring/cylinder liner at the top dead centre: Experimental study and modelling

Wear assessment of critical components subjected to relative sliding is a key factor for the development of advanced materials and surface treatments in automotive industry. Simulation of wear process of the engine components is considered as a good alternative for experimental testing which is cost...

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Bibliographic Details
Published in:Tribology international 2017-02, Vol.106, p.23-33
Main Authors: Zabala, B., Igartua, A., Fernández, X., Priestner, C., Ofner, H., Knaus, O., Abramczuk, M., Tribotte, P., Girot, F., Roman, E., Nevshupa, R.
Format: Article
Language:English
Subjects:
Advanced materials
Automobile industry
Automobiles
Automotive engineering
Automotive engines
Automotive parts
Boundary friction
Computer simulation
Critical components
Cylinder liner
Cylinder liners
Engine components
Laboratory tests
Lubrication
Modelling
Piston ring
Piston rings
Simulation
Surface coatings
Surface finishing
Wear
Wear resistance
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Summary:Wear assessment of critical components subjected to relative sliding is a key factor for the development of advanced materials and surface treatments in automotive industry. Simulation of wear process of the engine components is considered as a good alternative for experimental testing which is costly and time-consuming, but it requires a reliable experimental data for model fine-tuning. Therefore, friction and wear of cylinder liner against a piston ring were experimentally studied in simulated laboratory tests. The parameters which were controlled in these tests included oil type, lubrication starvation, surface finishing and surface coatings. The obtained experimental data were fed into a specific simulation model (AVL Excite-Power Unit). Comparison of experimental and simulated results yielded the error below 5%. •Coated piston rings with various coatings against cylinder liner with two different honing processes have been tested.•DLC coatings yielded the lowest friction and wear rate among the studied coatings.•The influence of lubricant in friction and wear reduction has been explained through XPS tests.•A model of the pin-on-disc reciprocating tests was developed in AVL Excite software for engines design.•The evolution of the friction coefficient, the wear amount and the regime modeled were validated.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2016.10.005