ISO 13296:2012
(Main)Diesel engines — High-pressure fuel injection pipe assemblies — General requirements and dimensions
Diesel engines — High-pressure fuel injection pipe assemblies — General requirements and dimensions
Moteurs diesels — Lignes assemblées d'injection de carburant à haute pression — Exigences générales et dimensions
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 13296
Third edition
2012-05-15
Diesel engines — High-pressure fuel
injection pipe assemblies — General
requirements and dimensions
Moteurs diesels — Lignes assemblées d’injection de carburant à haute
pression — Exigences générales et dimensions
Reference number
ISO 13296:2012(E)
©
ISO 2012
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ISO 13296:2012(E)
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© ISO 2012
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ii © ISO 2012 – All rights reserved
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ISO 13296:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Dimensions and tolerances . 1
5 Cleanliness . 2
6 Minimum bend radii . 3
7 Pipe end connections . 3
7.1 General . 3
7.2 Types of connection ends . 3
7.3 Pipe end assembly for integral 60° female cones . 5
7.4 Pipe end assembly for fabricated 60° female cones . 8
7.5 Bore entrance configuration . 9
8 Assembly clamps .10
9 External coatings .10
10 Operating pressure .10
11 Pipe inside diameter .10
12 Tightening torque and sealing performance .10
13 Packaging and identification .10
Annex A (normative) Operating pressure . 11
Bibliography .12
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ISO 13296:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13296 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 7, Injection
equipment and filters for use on road vehicles.
This third edition cancels and replaces the second edition (ISO 13296:2005), which has been technically revised.
iv © ISO 2012 – All rights reserved
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INTERNATIONAL STANDARD ISO 13296:2012(E)
Diesel engines — High-pressure fuel injection pipe
assemblies — General requirements and dimensions
1 Scope
This International Standard specifies dimensions and requirements for high-pressure fuel injection pipe
assemblies and assembled pipe sets for both integral and fabricated 60º female cones used on diesel
(compression-ignition) engines.
NOTE Dimensions of integral and fabricated 60º female cone connectors are specified in ISO 2974.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 2974, Diesel engines — 60° female cones for high-pressure fuel injection components
ISO 7876-4, Fuel injection equipment — Vocabulary — Part 4: High-pressure pipes and end-connections
ISO 8535-1:2011, Diesel engines — Steel tubes for high-pressure fuel injection pipes — Part 1: Requirements
for seamless cold-drawn single-wall tubes
ISO 8535-2:2003, Compression-ignition engines — Steel tubes for high-pressure fuel injection pipes — Part 2:
Requirements for composite tubes
ISO 12345, Diesel engines — Cleanliness assessment of fuel injection equipment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 7876-4 apply.
4 Dimensions and tolerances
The requirement and configuration drawing for a pipe assembly shall include at least the following:
a) an indication of compliance with this International Standard, i.e. ISO 13296;
b) the outside diameter and inside diameter of the pipe and an indication of compliance with ISO 8535-1
or ISO 8535-2;
c) the thread and the hexagon size of the connector nuts according to Table 2 or Table 4;
d) the type of connection ends as specified in 7.2;
e) a graphic representation of the centre-line of the pipe with the connection ends and each bend intersection
labelled as a point, with each point listed in a table with Cartesian coordinates x, y and z with the orthogonal
distance from the axis and the bend radius (the beginning and end points are given as the “S” dimension
for the defined configuration);
NOTE The coordinates are used to specify the theoretical exact centre-line of the pipe. See the example given in Figure 1.
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ISO 13296:2012(E)
f) the developed length of the pipe as an approximated value;
g) the material and surface finish requirements of the pipe and connector nuts according to ISO 8535-1
or ISO 8535-2.
The dimensional tolerance of a pipe assembly shall be stated in terms of the actual outside contour of the tube
in relation to the specified maximum outside contour and the variance of the actual pipe connection end from
the specified position, as agreed between supplier and customer.
Dimensions in millimetres
Point x y z Radius
A 0 0 0 0
B 65 0 0 15
C 65 100 0 15
D 140 100 0 15
E 140 150 0 15
F 40 150 0 15
G 40 185 0 0
Key
1 connector nut: thread M12; hexagon across flats 17
2 pipe: tube outside diameter 6 mm
3 connector nut: thread M14; hexagon across flats 19
4 pipe connection ends: both of Type C
a Developed length.
Figure 1 — Example of a requirement and configuration drawing
5 Cleanliness
The bore of a high-pressure fuel injection pipe assembly shall be clean, and this shall be assessed in accordance
with ISO 12345. Unless otherwise agreed between supplier and customer, cleanliness of pipe assemblies shall
be designated using the Fuel Injection Equipment Cleanliness Code (FIECC), as defined in ISO 12345.
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ISO 13296:2012(E)
6 Minimum bend radii
The radius of any bend made in fabricating high-pressure pipe assemblies shall be not less than two and a half
times (2,5×) the outside diameter of the pipe as measured from the pipe centre-line. Bends shall be a sufficient
distance from the end connections so as to allow easy fitting of the pipe assembly for its intended use. Bends
shall be a sufficient distance from one another so as not to impair fabrication. Bend radii shall be of uniform
size in each pipe assembly whenever possible.
7 Pipe end connections
7.1 General
The relationships of connection ends to the connector nut and with the dimensions G and S are shown in
Table 1 for the integral 60° female cone and in Table 3 for the fabricated 60° female cone.
The design of the shoulders of the connection end and of the related connector nut shall be agreed between
supplier and customer.
NOTE The dimensional characteristics of integral 60° female cones and of fabricated 60° female cones for high-
pressure fuel injection components are specified in ISO 2974.
7.2 Types of connection ends
Figures 2 and 3 show two fundamentally different designs of connection ends for high-pressure fuel injection
pipe assemblies:
— Type C, with conical sealing face;
— Type S, with spherical sealing face.
Details of a Type C connection end are shown in Figure 2; those of a Type S connection end are shown in Figure 3.
Key
1 connection-end sealing face (conical)
c
2 shoulder of connection end
3 connection end of pipe
NOTE For dimensions G and S, see Table 1.
a
Rounding of the leading edge of the se
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