Internal Combustion Engines--Piston Rings--Rectangular Rings With Narrow Ring Width
- Ground Vehicle Standard
- J1998_200806
- Cancelled
Scope
This SAE Standard specifies the essential dimensional features of R, B, and M rectangular piston ring types with narrow ring width.
Dimensional tables 8 and 9 allow for the use of cast iron (table 8) or steel (table 9). Since the modulus of elasticity of steel rings is higher than that of cast iron rings, the fluctuation in the surface pressure will become greater if the free gap is set as the reference for force. Therefore, forces are set using the surface pressure as the reference, in order to minimize the effect of the fluctuation.
The requirements of this document apply to rectangular rings for reciprocating internal combustion engines up to and including 90 mm diameter for cast iron rings and up to and including 100 mm diameter for steel. They may also be used for piston rings of compressors working under similar conditions.
Rationale
Recommended Content
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
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