The influence of lubricant degradation on measured piston ring film thickness in a fired gasoline reciprocating engine
| Autor: | Martin Priest, Rai Singh Notay, Malcolm F. Fox |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Sump
Mechanical Engineering Reciprocating engine 02 engineering and technology Surfaces and Interfaces 021001 nanoscience & nanotechnology Ring (chemistry) Surfaces Coatings and Films Cylinder (engine) law.invention 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials law Piston ring Gasoline Composite material Lubricant 0210 nano-technology Petrol engine |
| Zdroj: | Tribology International. 129:112-123 |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2018.07.002 |
| Popis: | A laser induced fluorescence system has been developed to visualise the oil film thickness between the piston ring and cylinder wall of a fired gasoline engine via a small optical window mounted in the cylinder wall. A fluorescent dye was added to the lubricant in the sump to allow the lubricant to fluoresce when absorbing laser radiation. The concentration of the dye did not disturb the lubricant chemistry or its performance. Degraded engine oil samples were used to investigate the influence of lubricant quality on ring pack lubricant film thickness measurements. The results show significant differences in the lubricant film thickness profiles for the ring pack when the lubricant degrades which will affect ring pack friction and ultimately fuel economy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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