This document covers the mechanisms associated with the power cylinder system which might affect blow-by. It will not discuss in detail the blow-by mechanisms from other systems or engine subsystems. This Five-Year Review and update include additional detail and clarifications on fundamental mechanisms of blow-by. Some of the updates are: Addition of Breathers that can affect blow-by. Removal of Oil Jets, Piston Pins, and Connecting Rods causing high blow-by Addition of Concentricity of the piston features that can cause blow-by Removed piston guidance and the associated figures as a cause of blow-by Removed Skirt Axial Profile and the associated figures as a cause of blow-by Added Microwelding as a factor that can cause high blow-by Updated the information regarding piston ring conformability Removed the effects of Oil Viscosity causing blow-by Removed Torque procedure and Improper O-rings affecting blow-by Added “Other Publications” in Section 2 with references to key technical publications on ring conformability
Power Cylinder Blow-by: Blow-by Mechanisms
2022-02-15
Conference paper
English
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