ISO 6626-2:2013
Internal combustion engines — Piston rings — Part 2: Coil-spring-loaded oil control rings of narrow width made of cast iron
ISO 6626-2:2013 specifies the essential dimensional features of coil-spring-loaded oil control rings made of cast iron, types DSF-C, SSF, GSF, DSF, SSF-L, DSF-NG and DSF-CNP. It is applicable to those piston rings in sizes 60 mm to 110 mm, inclusive, for reciprocating internal combustion engines for road vehicles and other applications.
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Section sec_1
Section sec_2
Section sec_3
Section sec_4
Section sec_4.1
Section sec_4.1.1
Figure fig_1
Section sec_4.2
Section sec_4.2.1
Table tab_a
Figure fig_2
Section sec_4.2.2
Section sec_4.3
Section sec_4.3.1
Table tab_b
Figure fig_3
Section sec_4.3.2
Section sec_4.4
Section sec_4.4.1
Table tab_c
Figure fig_4
Section sec_4.4.2
Section sec_4.5
Section sec_4.5.1
Table tab_d
Figure fig_5
Section sec_4.5.2
Section sec_4.6
Section sec_4.6.1
Table tab_e
Figure fig_6
Section sec_4.6.2
Section sec_4.7
Section sec_4.7.1
Table tab_f
Figure fig_7
Section sec_4.7.2
Section sec_4.8
Section sec_4.8.1
Table tab_g
Figure fig_8
Section sec_4.8.2
Section sec_5
Section sec_5.1
Section sec_5.1.1
Section sec_5.1.1.1
Section sec_5.1.1.2
Section sec_5.1.1.3
Section sec_5.1.1.4
Figure fig_9
Table tab_1
Section sec_5.1.2
Figure fig_10
Section sec_5.1.2.1
Section sec_5.2
Figure fig_11
Table tab_2
Section sec_5.3
Section sec_6
Section sec_6.1
Table tab_h
Figure fig_12
Table tab_i
Figure fig_13
Table tab_j
Figure fig_14
Table tab_k
Figure fig_15
Section sec_6.2
Section sec_6.3
Figure fig_16
Section sec_6.4
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_7.3.1
Section sec_7.3.2
Section sec_7.3.3
Section sec_7.4
Table tab_3
Figure fig_17
Section sec_8
Table tab_4
Table tab_4___1
Table tab_4___2
Table tab_4___3
Table tab_5
Table tab_5___1
Table tab_5___2
Table tab_5___3
Table tab_6
Table tab_6___1
Table tab_7
Table tab_7___1
Table tab_8
Table tab_8___1
Table tab_8___2
Table tab_8___3
Table tab_9
Table tab_9___1
Reference ref_1
Reference ref_2
Reference ref_3
Reference ref_4
Reference ref_5
Reference ref_6
Foreword
Introduction
1 Scope
2 Normative references
3 Overview
4 Piston ring types and designation
4.1 DSF-C, SSF, GSF, DSF, SSF-L, DSF-NG and DSF-CNP types
4.2 Type DSF-C — Coil-spring-loaded bevelled edge oil control ring, chromium-plated, and profile ground
4.3 Type DSF-CNP — Coil-spring-loaded bevelled-edge oil control ring, chromium-plated not profile ground
4.4 Type SSF — Coil-spring-loaded slotted oil control ring
4.5 Type GSF — Coil-spring-loaded double bevelled oil control ring
4.6 Type DSF — Coil-spring-loaded bevelled edge oil control ring
4.7 Type DSF-NG — Coil-spring-loaded bevelled-edge oil control ring (face geometry similar to type DSF-C)
4.8 Type SSF-L — Coil-spring-loaded slotted oil control ring with 0,4 mm nominal land width
5 Common features
5.1 Oil drainage by slots or holes
5.2 Plating thickness — DSF-C and DSF-CNP (coil-spring-loaded bevelled edge oil control ring, chromium plated)
5.3 Peripheral edges at gap of chromium plated oil control rings
6 Coil springs
6.1 Types of coil spring
6.2 Coil spring excursion (extended gap)
6.3 Position of coil spring gap and fixing
6.4 Material
7 Tangential force and nominal contact pressure
7.1 Tangential force
7.2 Force factors
7.3 Tangential force, Ft
7.4 Classes of nominal contact pressure, po
8 Dimensions and tangential forces
Bibliography
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Section sec_1
Section sec_2
Section sec_3
Section sec_4
Section sec_4.1
Section sec_4.1.1
Figure fig_1
Section sec_4.2
Section sec_4.2.1
Table tab_a
Figure fig_2
Section sec_4.2.2
Section sec_4.3
Section sec_4.3.1
Table tab_b
Figure fig_3
Section sec_4.3.2
Section sec_4.4
Section sec_4.4.1
Table tab_c
Figure fig_4
Section sec_4.4.2
Section sec_4.5
Section sec_4.5.1
Table tab_d
Figure fig_5
Section sec_4.5.2
Section sec_4.6
Section sec_4.6.1
Table tab_e
Figure fig_6
Section sec_4.6.2
Section sec_4.7
Section sec_4.7.1
Table tab_f
Figure fig_7
Section sec_4.7.2
Section sec_4.8
Section sec_4.8.1
Table tab_g
Figure fig_8
Section sec_4.8.2
Section sec_5
Section sec_5.1
Section sec_5.1.1
Section sec_5.1.1.1
Section sec_5.1.1.2
Section sec_5.1.1.3
Section sec_5.1.1.4
Figure fig_9
Table tab_1
Section sec_5.1.2
Figure fig_10
Section sec_5.1.2.1
Section sec_5.2
Figure fig_11
Table tab_2
Section sec_5.3
Section sec_6
Section sec_6.1
Table tab_h
Figure fig_12
Table tab_i
Figure fig_13
Table tab_j
Figure fig_14
Table tab_k
Figure fig_15
Section sec_6.2
Section sec_6.3
Figure fig_16
Section sec_6.4
Section sec_7
Section sec_7.1
Section sec_7.2
Section sec_7.3
Section sec_7.3.1
Section sec_7.3.2
Section sec_7.3.3
Section sec_7.4
Table tab_3
Figure fig_17
Section sec_8
Table tab_4
Table tab_4___1
Table tab_4___2
Table tab_4___3
Table tab_5
Table tab_5___1
Table tab_5___2
Table tab_5___3
Table tab_6
Table tab_6___1
Table tab_7
Table tab_7___1
Table tab_8
Table tab_8___1
Table tab_8___2
Table tab_8___3
Table tab_9
Table tab_9___1
Reference ref_1
Reference ref_2
Reference ref_3
Reference ref_4
Reference ref_5
Reference ref_6
Foreword
Introduction
1 Scope
2 Normative references
3 Overview
4 Piston ring types and designation
4.1 DSF-C, SSF, GSF, DSF, SSF-L, DSF-NG and DSF-CNP types
4.2 Type DSF-C — Coil-spring-loaded bevelled edge oil control ring, chromium-plated, and profile ground
4.3 Type DSF-CNP — Coil-spring-loaded bevelled-edge oil control ring, chromium-plated not profile ground
4.4 Type SSF — Coil-spring-loaded slotted oil control ring
4.5 Type GSF — Coil-spring-loaded double bevelled oil control ring
4.6 Type DSF — Coil-spring-loaded bevelled edge oil control ring
4.7 Type DSF-NG — Coil-spring-loaded bevelled-edge oil control ring (face geometry similar to type DSF-C)
4.8 Type SSF-L — Coil-spring-loaded slotted oil control ring with 0,4 mm nominal land width
5 Common features
5.1 Oil drainage by slots or holes
5.2 Plating thickness — DSF-C and DSF-CNP (coil-spring-loaded bevelled edge oil control ring, chromium plated)
5.3 Peripheral edges at gap of chromium plated oil control rings
6 Coil springs
6.1 Types of coil spring
6.2 Coil spring excursion (extended gap)
6.3 Position of coil spring gap and fixing
6.4 Material
7 Tangential force and nominal contact pressure
7.1 Tangential force
7.2 Force factors
7.3 Tangential force, Ft
7.4 Classes of nominal contact pressure, po
8 Dimensions and tangential forces
Bibliography