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  • BSI
    DD 208:1992 Piston rings up to 200 mm diameter for reciprocating internal combustion engines: specification for rectangular rings with narrow ring width
    Edition: 1992
    $313.97
    / user per year

Description of DD 208:1992 1992

This Technical Report specifies the essential dimensional features of R-, B- and M-rectangular piston ring types with narrow ring width.

Dimension Table 8 and Table 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 forces. Therefore forces are set using the surface pressure as the reference, in order to minimize the effect of the fluctuation.

The requirements of this Technical Report apply to rectangular piston rings of reciprocating internal combustion piston engines, up to and including 90 mm diameter for cast iron rings and up to and including 100 mm diameter for steel. It may also be used for piston rings of compressors working under similar conditions.



Standard NumberDD 208:1992
TitlePiston rings up to 200 mm diameter for reciprocating internal combustion engines: specification for rectangular rings with narrow ring width
StatusRevision Underway
Publication Date1992-05-01
ReplacesBS 5341-2:1977, BS 5341-3:1976, BS 5341-4:1976, BS 5341-1:1976
Identical National Standard OfISO/TR 6622-2:1988
DescriptorsPrime movers, Thickness, Designations, Dimensions, Engine components, Pistons, Molybdenum, Chromium, Reciprocating parts, Internal combustion engines, Shape, Metal coatings, Piston rings, Diameter
ICS43.060.10 Engine block and internal components
CommitteeMCE/14
ISBN0 580 20745 5
PublisherBSI
Pages22

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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