Power Cylinder Blow-by: Blow-by Mechanisms
- Ground Vehicle Standard
- J2797_202202
- Revised
Scope
Rationale
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Addition of Breathers that can affect blow-by. Removal of Oil Jets, Piston Pins, and Connecting Rods causing high blow-by
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Addition of Concentricity of the piston features that can cause blow-by
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Removed piston guidance and the associated figures as a cause of blow-by
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Removed Skirt Axial Profile and the associated figures as a cause of blow-by
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Added Microwelding as a factor that can cause high blow-by
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Updated the information regarding piston ring conformability
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Removed the effects of Oil Viscosity causing blow-by
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Removed Torque procedure and Improper O-rings affecting blow-by
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Added “Other Publications” in Section 2 with references to key technical publications on ring conformability
Recommended Content
Ground Vehicle Standard | Power Cylinder Blow-by: Problem Solving |
Ground Vehicle Standard | Power Cylinder Oil Consumption: Transport Mechanisms |
Technical Paper | Influence Of Top Ring End Gap Types At Blow-By Of Internal Combustion Engines |
Topic
Data Sets - Support Documents
Issuing Committee
Piston and Ring Standards Committee
The Piston and Ring Standards Committee reports to the Powertrain Systems Group of the Motor Vehicle Council. The Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports related to piston and ring components used in gasoline and diesel engines. The committee¿s objectives are to ensure that current engineering practice is reflected in the documents and identify new work items where standardization can serve to advance manufacturing, design or application. The committee serves as the U.S. delegate on the ISO/TC22/WG1, Piston Ring Standards Working Group. Participants in the SAE Piston and Ring Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.
Reference
Number | Title |
---|---|
ISO 6621-1 | This document is not part of the subscrption. |
J2612_202002 | Internal Combustion Engines - Piston Vocabulary |