Lubrication of small end bearings in supercharged two-stroke diesel engines

W.E. ten Napel; R. Bosma

doi:10.1016/B978-0-408-22161-0.50008-1

Lubrication of small end bearings in supercharged two-stroke diesel engines

W.E. ten Napel, R. Bosma

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic › peer-review

Abstract

Small end bearings of heavily loaded two-stroke diesel engines or, in general, bearings with duty cycles combining non-reversing loads with limited angular or oscillation very often only function marginally satisfactorily and tend to cause many problems. In this paper an analysis of these problems is presented. Construction of journal paths as well as calculations, based on the mobility-whirl angle method, were carried out. The influence of design factors, such as number and position of oil grooves, bearing clearance etc., will be investigated and it will be shown that optimization of these parameters only results in marginal improvements. An impressive increase in minimum film thickness, however, can be obtained by pre-stressing the piston pin with regard to its bearing housing. Subsequently, a suggestion for a practical bearing configuration is presented. (A)

Original language	English
Title of host publication	Tribology of reciprocating engines
Subtitle of host publication	proceedings of the 9th Leeds-Lyon Symposium on Tribology held in Bodington Hall, the University of Leeds, England, 7-10 September 1982
Editors	D. Dowson, C.M. Taylor, M. Godet, D. Berthe
Place of Publication	Guildford
Publisher	Butterworth & Co
Pages	37-43
ISBN (Print)	9780408221610
DOIs	https://doi.org/10.1016/B978-0-408-22161-0.50008-1
Publication status	Published - 1 Jan 1983
Event	9th Leeds-Lyon Symposium on Tribology 1982 - Bodington Hall, the University of Leeds, Leeds, United Kingdom Duration: 7 Sept 1982 → 10 Sept 1982 Conference number: 9

Conference

Conference	9th Leeds-Lyon Symposium on Tribology 1982
Country/Territory	United Kingdom
City	Leeds
Period	7/09/82 → 10/09/82

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10.1016/B978-0-408-22161-0.50008-1

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ten Napel, W. E., & Bosma, R. (1983). Lubrication of small end bearings in supercharged two-stroke diesel engines. In D. Dowson, C. M. Taylor, M. Godet, & D. Berthe (Eds.), Tribology of reciprocating engines: proceedings of the 9th Leeds-Lyon Symposium on Tribology held in Bodington Hall, the University of Leeds, England, 7-10 September 1982 (pp. 37-43). Butterworth & Co. https://doi.org/10.1016/B978-0-408-22161-0.50008-1

ten Napel, W.E. ; Bosma, R. / Lubrication of small end bearings in supercharged two-stroke diesel engines. Tribology of reciprocating engines: proceedings of the 9th Leeds-Lyon Symposium on Tribology held in Bodington Hall, the University of Leeds, England, 7-10 September 1982. editor / D. Dowson ; C.M. Taylor ; M. Godet ; D. Berthe. Guildford : Butterworth & Co, 1983. pp. 37-43

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abstract = "Small end bearings of heavily loaded two-stroke diesel engines or, in general, bearings with duty cycles combining non-reversing loads with limited angular or oscillation very often only function marginally satisfactorily and tend to cause many problems. In this paper an analysis of these problems is presented. Construction of journal paths as well as calculations, based on the mobility-whirl angle method, were carried out. The influence of design factors, such as number and position of oil grooves, bearing clearance etc., will be investigated and it will be shown that optimization of these parameters only results in marginal improvements. An impressive increase in minimum film thickness, however, can be obtained by pre-stressing the piston pin with regard to its bearing housing. Subsequently, a suggestion for a practical bearing configuration is presented. (A)",

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ten Napel, WE & Bosma, R 1983, Lubrication of small end bearings in supercharged two-stroke diesel engines. in D Dowson, CM Taylor, M Godet & D Berthe (eds), Tribology of reciprocating engines: proceedings of the 9th Leeds-Lyon Symposium on Tribology held in Bodington Hall, the University of Leeds, England, 7-10 September 1982. Butterworth & Co, Guildford, pp. 37-43, 9th Leeds-Lyon Symposium on Tribology 1982, Leeds, United Kingdom, 7/09/82. https://doi.org/10.1016/B978-0-408-22161-0.50008-1

Lubrication of small end bearings in supercharged two-stroke diesel engines. / ten Napel, W.E.; Bosma, R.
Tribology of reciprocating engines: proceedings of the 9th Leeds-Lyon Symposium on Tribology held in Bodington Hall, the University of Leeds, England, 7-10 September 1982. ed. / D. Dowson; C.M. Taylor; M. Godet; D. Berthe. Guildford: Butterworth & Co, 1983. p. 37-43.

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Academic › peer-review

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AU - ten Napel, W.E.

AU - Bosma, R.

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N2 - Small end bearings of heavily loaded two-stroke diesel engines or, in general, bearings with duty cycles combining non-reversing loads with limited angular or oscillation very often only function marginally satisfactorily and tend to cause many problems. In this paper an analysis of these problems is presented. Construction of journal paths as well as calculations, based on the mobility-whirl angle method, were carried out. The influence of design factors, such as number and position of oil grooves, bearing clearance etc., will be investigated and it will be shown that optimization of these parameters only results in marginal improvements. An impressive increase in minimum film thickness, however, can be obtained by pre-stressing the piston pin with regard to its bearing housing. Subsequently, a suggestion for a practical bearing configuration is presented. (A)

AB - Small end bearings of heavily loaded two-stroke diesel engines or, in general, bearings with duty cycles combining non-reversing loads with limited angular or oscillation very often only function marginally satisfactorily and tend to cause many problems. In this paper an analysis of these problems is presented. Construction of journal paths as well as calculations, based on the mobility-whirl angle method, were carried out. The influence of design factors, such as number and position of oil grooves, bearing clearance etc., will be investigated and it will be shown that optimization of these parameters only results in marginal improvements. An impressive increase in minimum film thickness, however, can be obtained by pre-stressing the piston pin with regard to its bearing housing. Subsequently, a suggestion for a practical bearing configuration is presented. (A)

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ten Napel WE, Bosma R. Lubrication of small end bearings in supercharged two-stroke diesel engines. In Dowson D, Taylor CM, Godet M, Berthe D, editors, Tribology of reciprocating engines: proceedings of the 9th Leeds-Lyon Symposium on Tribology held in Bodington Hall, the University of Leeds, England, 7-10 September 1982. Guildford: Butterworth & Co. 1983. p. 37-43 doi: 10.1016/B978-0-408-22161-0.50008-1

Lubrication of small end bearings in supercharged two-stroke diesel engines

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