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The concept of the contact angle in the process of oil film formation in internal combustion piston engines.
Sci Rep
November 2023
Faculty of Mechatronics, Armament and Aerospace of the Military University of Technology, ul. gen. Sylwestra Kaliskiego 2, 00-908, Warsaw 46, Poland.
In internal combustion piston engines, the process of oil film formation differs from that in industrial machines. The adhesive strength of the molecules at the interface between the coating of engine parts and the lubricating oil affects the load carrying capacity and the ability to form a lubricated film. The geometry of the lubricating wedge between the surfaces of the piston rings and the cylinder wall is determined by the thickness of the oil film and the amount of oil coverage of the ring.
View Article and Find Full Text PDFThe Theory of the Surface Wettability Angle in the Formation of an Oil Film in Internal Combustion Piston Engines.
Materials (Basel)
May 2023
Faculty of Mechatronics, Armament and Aerospace, Military University of Technology, Sylwestra Kaliskiego 2, 00-908 Warsaw, Poland.
In internal combustion piston engines, the formation of an oil film is completely different from that seen in industrial machines. The molecular adhesion force at the interface between the surface coating of engine parts and the lubricating oil determines the load-carrying capacity and the ability to form a lubricated film. The geometry of the lubricating wedge between the surfaces of the piston rings and the cylinder wall is created by the thickness of the oil film and the height of the ring's coverage with lubricating oil.
View Article and Find Full Text PDFWroblewski wedge augmentation for recurrent posterior dislocation of the Charnley total hip replacement.
Ann R Coll Surg Engl
November 2002
The Royal Bournemouth Hospital, Bournemouth, UK.
We analysed 68 cases of acetabular augmentation using the Wroblewski wedge for recurrent posterior dislocation of Charnley total hip replacements inserted through a posterior approach. The follow-up was done by postal questionnaire in living patients or by thorough search of case notes in the dead. All hips were followed up either until death or a minimum of 2 years.
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