Rubber hoses for automotive turbochargers -- Specification

ISO 17324:2014 specifies requirements of rubber hoses used in the automotive turbocharger system to connect turbocharger, intercooler, and internal combustion engine at the working temperatures from −40°C to +250°C and the working pressures from −0,01MPa(−0,1bar) to 0,5MPa(5bar). Hoses covered by ISO 17324:2014 may be straight or shaped.

Tuyaux en caoutchouc pour turbocompresseurs automobiles -- Spécifications

General Information

Status
Published
Publication Date
16-Sep-2014
Current Stage
6060 - International Standard published
Start Date
04-Aug-2014
Completion Date
17-Sep-2014
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ISO 17324:2014 - Rubber hoses for automotive turbochargers -- Specification
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INTERNATIONAL ISO
STANDARD 17324
First edition
2014-09-15
Rubber hoses for automotive
turbochargers — Specification
Tuyaux en caoutchouc pour turbocompresseurs automobiles —
Spécifications
Reference number
ISO 17324:2014(E)
ISO 2014
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ISO 17324:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

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Published in Switzerland
ii © ISO 2014 – All rights reserved
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ISO 17324:2014(E)
Contents  Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2  Normative references ...................................................................................................................................................................................... 1

3  Terms and definitions ..................................................................................................................................................................................... 1

4  Classification ............................................................................................................................................................................................................ 2

4.1 Types and classes .................................................................................................................................................................................. 2

4.2 Grades ............................................................................................................................................................................................................. 2

5  Materials and construction ....................................................................................................................................................................... 2

5.1 Materials ....................................................................................................................................................................................................... 2

5.2 Construction .............................................................................................................................................................................................. 3

6  Dimensions and tolerances ....................................................................................................................................................................... 3

6.1 Inside diameter, wall thickness, and length tolerance .......................................................................................... 3

6.2 Hose end squareness ......................................................................................................................................................................... 4

7 Physical properties ............................................................................................................................................................................................ 5

7.1 Rubber compounds ............................................................................................................................................................................. 5

7.2 Hose .................................................................................................................................................................................................................. 7

8  Frequency of testing .......................................................................................................................................................................................... 8

9  Marking .......................................................................................................................................................................................................................... 9

10 Storage ............................................................................................................................................................................................................................ 9

Annex A (normative) Fatigue resistance test ............................................................................................................................................10

Annex B (normative) Type and routine tests ............................................................................................................................................12

Annex C (informative)  Recommended production tests ..............................................................................................................13

Bibliography .............................................................................................................................................................................................................................15

© ISO 2014 – All rights reserved iii
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ISO 17324:2014(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee

SC 1, Rubber and plastics hoses and hose assemblies.
iv © ISO 2014 – All rights reserved
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INTERNATIONAL STANDARD ISO 17324:2014(E)
Rubber hoses for automotive turbochargers —
Specification
1 Scope

This International Standard specifies requirements of rubber hoses used in the automotive turbocharger

system to connect turbocharger, intercooler, and internal combustion engine at the working temperatures

from −40°C to +250°C and the working pressures from −0,01MPa(−0,1bar) to 0,5MPa(5bar). Hoses

covered by this International Standard may be straight or shaped.
2  Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests

ISO 812, Rubber, vulcanized or thermoplastic — Determination of low-temperature brittleness

ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and

dynamic strain testing
ISO 1629, Rubber and latices — Nomenclature

ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of

hoses and the lengths of hose assemblies

ISO 7233:2006, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum

ISO 8033, Rubber and plastics hoses — Determination of adhesion between components

ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 8331, Rubber and plastics hoses and hose assemblies — Guidelines for selection, storage, use and

maintenance

ISO 28702, Rubber and plastics hoses and tubing — Textile-reinforced types — Sub-ambient temperature

crush test
3  Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8330 and the abbreviated

terms given in ISO 1629 apply.
© ISO 2014 – All rights reserved 1
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ISO 17324:2014(E)
4  Classification
4.1  Types and classes

The hoses are classified into three types as per the intended operating conditions.

— Type A: hose for connecting air filter and turbocharger, to transfer filtered atmospheric air. Working

temperature from −40°C to +100°C, and vacuum pressure low to −0,01MPa(−0,1bar).

— Type B: hose for connecting turbocharger and intercooler, to transfer the pressurized and heated

air. Working temperature from −40°C to +250°C.

Type B is subdivided into three subtypes as per working temperature and further classified into classes

as per maximum working pressures. The subtypes and classes are shown in Table 1.
Table 1 — Subtypes and classes for Type B
Class
Working temperature
1 2 3
Type
Maximum working pressure
MPa(bar)
B1 −40 approximately +180 0,16(1,6) 0,22(2,2) 0,28(2,8)
B2 −40 approximately +220 0,20(2,0) 0,28(2,8) 0,34(3,4)
B3 −40 approximately +250 0,30(3,0) 0,40(4,0) 0,50(5,0)

— Type C: hose for connecting intercooler and internal combustion engine, to transfer the pressurized

and cooled air. Working temperature from −40°C to +140°C and maximum working pressure 0,3 MPa

(3bar).
4.2 Grades
Type B and C of hose are classified into 2 grades as per fatigue resistance:
— Grade 200 — 200 000 impulse cycles;
— Grade 400 — 400 000 impulse cycles.
5  Materials and construction
5.1 Materials
The typical materials for the types of hoses are listed in Table 2.
2 © ISO 2014 – All rights reserved
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ISO 17324:2014(E)
Table 2 — Hose type and typical material
Dimensions in millimetres
Type Lining Reinforcement Cover
EPDM EPDM
CM CM
CR PET CR
A/C ECO PA ECO
AEM wire AEM
ACM ACM
VMQ VMQ
AEM AEM
PET
B1 ACM ACM
VMQ VMQ
FKM VMQ
B2/B3 AR
FVMQ VMQ

NOTE — All the abbreviated words are defined in ISO 1629 excluded PET, PA, and AR.

PET — poly(ethylene terephthalate) fibre
PA — polyamide
AR — Aramid
5.2  Construction
The hoses shall consist of:
— a flexible polymeric elastomers lining;

— a synthetic textile reinforcement or other reinforcements, applied by any suitable technique;

— a flexible polymeric elastomers cover.

Hose body may have a smooth or corrugated finish, and be further reinforced with wire at suitable

positions, and may be covered with glass fibre cloth with aluminium-foil paper, or heat insulation or

abrasion resistant jacket made of thermoplastic material on suitable position.
NOTE Type A may be rubber tubing without reinforcement.
6  Dimensions and tolerances
6.1  Inside diameter, wall thickness, and length tolerance

Unless otherwise specified, when measured in accordance with ISO 4671, inside diameters and wall

thicknesses tolerances are given in Table 3 and length tolerances are given in Table 4.

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ISO 17324:2014(E)
Table 3 — Inside diameter, wall thickness tolerance
Dimensions in millimetres
Inside diameter and tolerance Tolerance of wall thickness
Extruded Wrapped
Inside diameter Tolerance
hose hose
≤ 35
+05,
±0,3 ±0,5
−13,
> 35 and ≤ 50
+05,
> 50 and ≤ 80
−13,
±0,8 ±1,0
+08,
> 80 and ≤ 110
−17,
+12,
> 110 and ≤ 150
−20,
±1,0 ±1,2
+16,
> 150
−25,
Overlap zone excluded
Table 4 — Length tolerance
Dimensions in millimetres
Length Tolerance
≤ 300 ±3
> 300 and ≤ 600 ±4,5
> 600 ±1 %
6.2  Hose end squareness

All the points on the end surface of a hose shall be in the tolerance zone, given in Table 5, which is defined

by two planes vertical to the longitudinal axis of th
...

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