Effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials
In reciprocating sliding, it is not yet specified the difference of effects between higher frequency and lower frequency on friction and wear under a given sliding velocity. In the study of cast irons, focus seems to be mainly on behaviors of graphite flakes. In this report, sliding characteristics...
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2014-02-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/80/810/80_2014dsm0033/_pdf/-char/en |
| _version_ | 1828129366280765440 |
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| author | Toku ITOH |
| author_facet | Toku ITOH |
| author_sort | Toku ITOH |
| collection | DOAJ |
| description | In reciprocating sliding, it is not yet specified the difference of effects between higher frequency and lower frequency on friction and wear under a given sliding velocity. In the study of cast irons, focus seems to be mainly on behaviors of graphite flakes. In this report, sliding characteristics of marine cylinder liner materials were studied on an SRV tester in terms of contact frequency by varying frequency and stroke under a given sliding velocity in base oils and oils with EP-additives, DBDS ( Dibenzyl Disulphide ). In higher contact frequency, or a combination of higher frequency and a smaller stroke, friction was observed to become higher than at lower frequency under severe lubricating conditions. However, run-in process was promoted under higher contact frequency with increase in viscosity and sliding velocity. Hard-phase particles, steadite, showed a tendency to chip from rubbed surfaces because of higher contact frequency, causing higher friction. The effects of frequency and stroke in base oils reflected on those of EP-additives. In DBDS-added oil, higher friction under higher contact frequency was also observed for severe lubricating conditions. Larger value of S/O ratio was confirmed by X-ray analysis of worn surfaces under higher friction. The ratio of S/O ratio decreased to less than one with improved lubricating conditions. |
| first_indexed | 2024-04-11T16:18:48Z |
| format | Article |
| id | doaj.art-a17e2c2029b44ecca205080ce1b4da91 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T16:18:48Z |
| publishDate | 2014-02-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-a17e2c2029b44ecca205080ce1b4da912022-12-22T04:14:26ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612014-02-0180810DSM0033DSM003310.1299/transjsme.2014dsm0033transjsmeEffects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materialsToku ITOH0Department of Mechanical Engineering, Oita Technical CollegeIn reciprocating sliding, it is not yet specified the difference of effects between higher frequency and lower frequency on friction and wear under a given sliding velocity. In the study of cast irons, focus seems to be mainly on behaviors of graphite flakes. In this report, sliding characteristics of marine cylinder liner materials were studied on an SRV tester in terms of contact frequency by varying frequency and stroke under a given sliding velocity in base oils and oils with EP-additives, DBDS ( Dibenzyl Disulphide ). In higher contact frequency, or a combination of higher frequency and a smaller stroke, friction was observed to become higher than at lower frequency under severe lubricating conditions. However, run-in process was promoted under higher contact frequency with increase in viscosity and sliding velocity. Hard-phase particles, steadite, showed a tendency to chip from rubbed surfaces because of higher contact frequency, causing higher friction. The effects of frequency and stroke in base oils reflected on those of EP-additives. In DBDS-added oil, higher friction under higher contact frequency was also observed for severe lubricating conditions. Larger value of S/O ratio was confirmed by X-ray analysis of worn surfaces under higher friction. The ratio of S/O ratio decreased to less than one with improved lubricating conditions.https://www.jstage.jst.go.jp/article/transjsme/80/810/80_2014dsm0033/_pdf/-char/enreciprocationcontact frequencyfrictioncylinder linersteaditelubricationtribology |
| spellingShingle | Toku ITOH Effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials Nihon Kikai Gakkai ronbunshu reciprocation contact frequency friction cylinder liner steadite lubrication tribology |
| title | Effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials |
| title_full | Effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials |
| title_fullStr | Effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials |
| title_full_unstemmed | Effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials |
| title_short | Effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials |
| title_sort | effects of frequency and stroke on lubricated reciprocating sliding characteristics of marine cylinder liner materials |
| topic | reciprocation contact frequency friction cylinder liner steadite lubrication tribology |
| url | https://www.jstage.jst.go.jp/article/transjsme/80/810/80_2014dsm0033/_pdf/-char/en |
| work_keys_str_mv | AT tokuitoh effectsoffrequencyandstrokeonlubricatedreciprocatingslidingcharacteristicsofmarinecylinderlinermaterials |