Aero Engine Piston Ring Design

1929 ◽  
Vol 1 (3) ◽  
pp. 99-102
Author(s):  
W.A. Oubridge
Keyword(s):  
Piston Ring ◽  
Engine Piston ◽  
Aero Engine

Piston Ring Cavitation and Starvation During Entrainment Motion Reversal

2010 ◽  
Author(s):  
W. W. F. Chong ◽  
M. Teodorescu ◽  
N. D. Vaughan
Keyword(s):  
Thin Films ◽  
Piston Ring ◽  
Film Formation ◽  
Leading Edge ◽  
Current Paper ◽  
Ic Engine ◽  
Entrainment Velocity ◽  
Bottom Dead Center ◽  
Engine Piston ◽  
Piston Ring Lubrication

The current paper investigates the correlation between oil film formation, cavitation and starvation during inlet reversal of an Internal Combustion (IC) engine piston-ring conjunction. Piston ring lubrication is critical in the vicinity of Top Dead Center (TDC) and Bottom Dead Center (BDC) where low entrainment velocity leads to very thin films. The current study predicts that cavities formed at the trailing edge of the contact before the entrainment reversal briefly survive at the leading edge after the reversal. This contributes to contact starvation and thinner films than previously thought.

Development of High Temperature Diesel Engine Piston Ring and Cylinder Liner Tribology

2003 ◽  
Author(s):  
Lloyd Kamo ◽  
Philipe Saad ◽  
Rudolf Mnatsakanov ◽  
Walter Bryzik ◽  
Milad Mekari
Keyword(s):  
High Temperature ◽  
Diesel Engine ◽  
Piston Ring ◽  
Cylinder Liner ◽  
Engine Piston

scholarly journals Numerical calculation and experimental study on friction and lubrication of Stirling engine piston ring

2021 ◽  
Vol 313 ◽  
pp. 02002
Author(s):  
Li Songjian ◽  
Zheng Wei ◽  
Xu Wei ◽  
Ling Hong
Keyword(s):  
Numerical Calculation ◽  
Numerical Model ◽  
Contact Pressure ◽  
Piston Ring ◽  
Stirling Engine ◽  
Piston Rings ◽  
Working Pressure ◽  
Engine Piston ◽  
Intermediate Chamber ◽  
Friction And Lubrication

To solve the practical problem of Stirling engine piston ring, numerical model on friction and lubrication were established based on average Reynolds equation theory. Numerical calculation results show: piston rings are in the mixed lubrication state which gas lubrication film and micro-convex body contact existing simultaneously; contact pressure is 2 orders of magnitude less than gas film pressure; contact pressure is approximately linearly related to mean gas pressure. Simulated test rig was built and experimental results show: high-pressure working gas leak to intermediate chamber through piston rings, and the pressure of intermediate chamber drops sharply at lowest pressure of circulation; piston ring wear increases when rotational speed or working pressure increase. The accuracy of numerical model was proved by experimental phenomena and test data.

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