Drag Losses of Wet Brakes and Clutches—A Scoping Review
Wet brakes and clutches are crucial drivetrain components widely used in many sectors. However, their drag losses can account for a considerable share of the overall drivetrain losses. Therefore, investigation of the drag loss behavior of wet brakes and clutches has been the subject of research sinc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2075-4442/13/1/27 |
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| author | Lukas Pointner-Gabriel Katharina Voelkel Karsten Stahl |
| author_facet | Lukas Pointner-Gabriel Katharina Voelkel Karsten Stahl |
| author_sort | Lukas Pointner-Gabriel |
| collection | DOAJ |
| description | Wet brakes and clutches are crucial drivetrain components widely used in many sectors. However, their drag losses can account for a considerable share of the overall drivetrain losses. Therefore, investigation of the drag loss behavior of wet brakes and clutches has been the subject of research since the 1970s. This paper aims to provide a comprehensive overview of existing knowledge of drag loss behavior and identify future research directions. To this end, a scoping review was conducted according to the PRISMA guideline. It was found that research mainly, but not only, focused on gaining a fundamental understanding of the drag loss generation process, investigating the integral drag loss behavior, analyzing the flow in the sub-millimeter gaps, and modeling and calculating the drag losses. The review summarizes the state of the art and may support researchers and engineers in developing low-loss wet brake and clutch systems. Several research gaps were identified and are provided. |
| format | Article |
| id | doaj-art-cbe34c4b01314b61933ee74cd9c87465 |
| institution | Kabale University |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-cbe34c4b01314b61933ee74cd9c874652025-01-24T13:39:01ZengMDPI AGLubricants2075-44422025-01-011312710.3390/lubricants13010027Drag Losses of Wet Brakes and Clutches—A Scoping ReviewLukas Pointner-Gabriel0Katharina Voelkel1Karsten Stahl2Gear Research Center (FZG), Department of Mechanical Engineering, School of Engineering & Design, Technical University of Munich, 85748 Garching near Munich, GermanyGear Research Center (FZG), Department of Mechanical Engineering, School of Engineering & Design, Technical University of Munich, 85748 Garching near Munich, GermanyGear Research Center (FZG), Department of Mechanical Engineering, School of Engineering & Design, Technical University of Munich, 85748 Garching near Munich, GermanyWet brakes and clutches are crucial drivetrain components widely used in many sectors. However, their drag losses can account for a considerable share of the overall drivetrain losses. Therefore, investigation of the drag loss behavior of wet brakes and clutches has been the subject of research since the 1970s. This paper aims to provide a comprehensive overview of existing knowledge of drag loss behavior and identify future research directions. To this end, a scoping review was conducted according to the PRISMA guideline. It was found that research mainly, but not only, focused on gaining a fundamental understanding of the drag loss generation process, investigating the integral drag loss behavior, analyzing the flow in the sub-millimeter gaps, and modeling and calculating the drag losses. The review summarizes the state of the art and may support researchers and engineers in developing low-loss wet brake and clutch systems. Several research gaps were identified and are provided.https://www.mdpi.com/2075-4442/13/1/27brakeclutchdrag lossreview |
| spellingShingle | Lukas Pointner-Gabriel Katharina Voelkel Karsten Stahl Drag Losses of Wet Brakes and Clutches—A Scoping Review Lubricants brake clutch drag loss review |
| title | Drag Losses of Wet Brakes and Clutches—A Scoping Review |
| title_full | Drag Losses of Wet Brakes and Clutches—A Scoping Review |
| title_fullStr | Drag Losses of Wet Brakes and Clutches—A Scoping Review |
| title_full_unstemmed | Drag Losses of Wet Brakes and Clutches—A Scoping Review |
| title_short | Drag Losses of Wet Brakes and Clutches—A Scoping Review |
| title_sort | drag losses of wet brakes and clutches a scoping review |
| topic | brake clutch drag loss review |
| url | https://www.mdpi.com/2075-4442/13/1/27 |
| work_keys_str_mv | AT lukaspointnergabriel draglossesofwetbrakesandclutchesascopingreview AT katharinavoelkel draglossesofwetbrakesandclutchesascopingreview AT karstenstahl draglossesofwetbrakesandclutchesascopingreview |