GB/T 1149.9-2008
ActiveInternal combustion engines - Piston rings - Part 9: Keystone rings made of cast iron
内燃机 活塞环 第9部分：梯形铸铁环
Application Summary AI generated
This standard specifies the dimensions, material properties, and inspection requirements for keystone-shaped cast iron piston rings used in internal combustion engines. It is applied in the manufacturing and quality control of engine components, particularly for heavy-duty diesel engines where the tapered ring profile helps reduce carbon buildup and improve sealing under high-temperature conditions. The standard ensures interchangeability and performance consistency across engine designs in automotive, marine, and industrial power generation applications.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.