A study of the tribological behaviour of piston ring/cylinder liner interaction in diesel engines using acoustic emission

The novel use of non-intrusive acoustic emission (AE) measurements to provide information pertaining to the interaction between piston rings and cylinder liners in a range of diesel engines is investigated in this paper. In doing so, this technique is shown to offer a new method of investigation int...

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Bibliographic Details
Published in:Tribology international 2006-12, Vol.39 (12), p.1634-1642
Main Authors: Douglas, R.M., Steel, J.A., Reuben, R.L.
Format: Article
Language:English
Subjects:
Acoustic emission
Applied sciences
Condition monitoring
Engines and turbines
Exact sciences and technology
Friction, wear, lubrication
Industrial metrology. Testing
Internal combustion engines: gazoline engine, diesel engines, etc
Machine components
Mechanical engineering. Machine design
Piston ring/cylinder linear interface
Sliding friction
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Summary:The novel use of non-intrusive acoustic emission (AE) measurements to provide information pertaining to the interaction between piston rings and cylinder liners in a range of diesel engines is investigated in this paper. In doing so, this technique is shown to offer a new method of investigation into this important interface in engine operation. AE generated during normal engine operation is known to consist of contributions from a number of different sources such as injector and valve activity. A recent finding has been the identification of AE signals associated with the ring/liner interface which presents the opportunity for in-service monitoring. This work discusses the possible AE source mechanisms, such as asperity contact, lubricant flow and/or blowby, through reference to a number of tests on motored and in-service small HSDI diesel engines and large, 2-stroke, marine diesel engines. The influence of various factors such as engine speed, load and lubrication is considered.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2006.01.005