The piston’s skirt shape is a key design parameter since it critically influences lateral displacement, tilting movement, oil transport and consequently engine performances. This study proposes an alternative skirt profile that aims to reduce frictional losses between the piston and cylinder liner. Qualitatively, the proposed profile, aims to reduce solid-to-solid contact friction by increasing the total hydrodynamic forces generated on the skirt to balance side forces, and to prevent both sides of the skirt to interact with the liner simultaneously. The new skirt’s profile has been first studied and optimized using a piston secondary motion model and then prototyped and tested on a floating liner test bench, showing a 12% average reduction in total piston FMEP.
Introducing a New Piston Skirt Profile to Reduce Engine Friction
Sae Technical Papers
SAE 2016 World Congress and Exhibition ; 2016
2016-04-05
Aufsatz (Konferenz)
Englisch
Effect of Piston Motion on Piston Skirt Friction of a Gasoline Engine
SAE Technical Papers | 1997
|Effect of piston motion on piston skirt friction of a gasoline engine
Kraftfahrwesen | 1997
|A Study of Piston Skirt Friction – Effect of ‘Soft Skirt
British Library Conference Proceedings | 2010
|Piston skirt friction in internal combustion engines
Kraftfahrwesen | 1989
|The aeconoguide low friction piston skirt design
Kraftfahrwesen | 1982
|