Excessive cylinder bore out-of-roundness (OOR) can adversely affect the sealing functionality and durability of the piston-ring pack in an engine. This work reports the effects of changes in cylinder bore OOR on: (i) the rotation of the top and second compression rings, and (ii) oil consumption in an open-deck 4.5-L V-8 engine. A method was devised for altering the level of OOR in one cylinder of the engine without engine disassembly. Radiometric techniques were then applied to measure both piston ring rotation and oil consumption of that cylinder at three different levels of bore distortion. Results of these measurements are of value in determining the range of acceptability of production specifications for cylinder bore OOR.
Effect of Cylinder Bore Out-of-Roundness on Piston Ring Rotation and Engine Oil Consumption
Sae Technical Papers
International Congress & Exposition ; 1993
01.03.1993
Aufsatz (Konferenz)
Englisch
Effect of cylinder bore out-of-roundness on piston ring rotation and engine oil consumption
Kraftfahrwesen | 1993
|Effect of Cylinder Bore Deformation and Piston Ring Tension on SI Engine Oil Consumption
British Library Online Contents | 2012
|Measurement Technique of Cylinder Bore Roundness in Engine Assembly Process
British Library Conference Proceedings | 2006
|Modeling of Piston Ring-Cylinder Bore-Piston Groove Contact
SAE Technical Papers | 2015
|Modeling of Piston Ring-Cylinder Bore-Piston Groove Contact
British Library Conference Proceedings | 2015
|