Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication
In internal combustion engines, a significant portion of the total fuel energy is consumed to overcome the mechanical friction between the cylinder liner and the piston rings. The engine work loss through friction gradually reduces during the engine break-in period, as the result of liner surface to...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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MDPI AG
2020
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| Online Access: | https://hdl.handle.net/1721.1/123891 |
| _version_ | 1826207108975034368 |
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| author | Gu, Chongjie Wang, Renze Tian, Tian |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Gu, Chongjie Wang, Renze Tian, Tian |
| author_sort | Gu, Chongjie |
| collection | MIT |
| description | In internal combustion engines, a significant portion of the total fuel energy is consumed to overcome the mechanical friction between the cylinder liner and the piston rings. The engine work loss through friction gradually reduces during the engine break-in period, as the result of liner surface topography changes caused by wear. This work is the first step toward the development of a physics-based liner wear model to predict the evolution of liner roughness and ring pack lubrication during the break-in period. Two major mechanisms are involved in the wear model: plastic deformation and asperity fatigue. The two mechanisms are simulated through a set of submodels, including elastoplastic asperity contact, crack initiation, and crack propagation within the contact stress field. Compared to experimental measurements, the calculated friction evolution of different liner surface finishes during break-in exhibits the same trend and a comparable magnitude. Moreover, the simulation results indicate that the liner wear rate or duration of break-in depends greatly on the roughness, which may provide guidance for surface roughness design and manufacturing processes. Keyword: Liner wear; Friction; Surface roughness; Internal combustion engine |
| first_indexed | 2024-09-23T13:44:15Z |
| format | Article |
| id | mit-1721.1/123891 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:44:15Z |
| publishDate | 2020 |
| publisher | MDPI AG |
| record_format | dspace |
| spelling | mit-1721.1/1238912022-10-01T16:50:46Z Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication Gu, Chongjie Wang, Renze Tian, Tian Massachusetts Institute of Technology. Department of Mechanical Engineering In internal combustion engines, a significant portion of the total fuel energy is consumed to overcome the mechanical friction between the cylinder liner and the piston rings. The engine work loss through friction gradually reduces during the engine break-in period, as the result of liner surface topography changes caused by wear. This work is the first step toward the development of a physics-based liner wear model to predict the evolution of liner roughness and ring pack lubrication during the break-in period. Two major mechanisms are involved in the wear model: plastic deformation and asperity fatigue. The two mechanisms are simulated through a set of submodels, including elastoplastic asperity contact, crack initiation, and crack propagation within the contact stress field. Compared to experimental measurements, the calculated friction evolution of different liner surface finishes during break-in exhibits the same trend and a comparable magnitude. Moreover, the simulation results indicate that the liner wear rate or duration of break-in depends greatly on the roughness, which may provide guidance for surface roughness design and manufacturing processes. Keyword: Liner wear; Friction; Surface roughness; Internal combustion engine 2020-02-28T18:37:30Z 2020-02-28T18:37:30Z 2019-10 2019-10 2019-11-20T15:24:21Z Article http://purl.org/eprint/type/JournalArticle 2075-4442 https://hdl.handle.net/1721.1/123891 Gu, C.; Wang, R.; Tian, T. Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication. Lubricants 2019, 7, 89. © 2019 The Author(s) en http://dx.doi.org/10.3390/lubricants7100089 Lubricants Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf MDPI AG MDPI |
| spellingShingle | Gu, Chongjie Wang, Renze Tian, Tian Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication |
| title | Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication |
| title_full | Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication |
| title_fullStr | Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication |
| title_full_unstemmed | Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication |
| title_short | Modeling the Fatigue Wear of the Cylinder Liner in Internal Combustion Engines during the Break-In Period and Its Impact on Piston Ring Lubrication |
| title_sort | modeling the fatigue wear of the cylinder liner in internal combustion engines during the break in period and its impact on piston ring lubrication |
| url | https://hdl.handle.net/1721.1/123891 |
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