ISO 6626 is a series of international standards on piston rings that discusses coil-spring-loaded oil control rings.
ISO 6626-3 is the third part of the ISO 6626 series of documents that specifies the essential dimensions of coil-spring-loaded oil control rings made of steel, of piston ring types SOR (with R-shaped groove) and SOV (with V-shaped groove).
ISO 6626-3 applies to coil-spring-loaded oil control rings made of steel with a diameter from 60 mm up to and including 160 mm for reciprocating internal combustion engines. It can also be used for piston rings in compressors working under analogous conditions.
ISO 6626-3 on piston rings of vehicle engines is useful for:
The piston rings act to carry heat away from the hot piston into the cooled cylinder wall/block of the engine.
ISO 6626-3 navigates you through the general features and dimensions of piston ring Type SOR - Steel oil control rings with R-shaped groove and Type SOV — Steel oil control rings with V-shaped groove. ISO 6626-3 provides the types of coil spring namely Type CSN coil spring and Type CSG coil spring.
ISO 6626-3 specifies coil-spring excursion (extended gap) and the position of coil spring gap and fixing.
Overall, ISO 6626-3 assists you in designing coil-spring-loaded oil-control piston rings that will control the supply of oil to the cylinder wall, in order to lubricate the piston skirt and the oil control rings. With Obedience and compliance ISO 6626-3, you can achieve precision in terms of product dimensions.
BS ISO 6626-3:2019 supersedes BS ISO 6626-3:2008. BS ISO 6626-3:2019 includes some technical changes with respect to BS ISO 6626-3:2008. These include:
ISO 6626-3