ISO 4548-14:2023

Methods of test for full-flow lubricating oil filters for internal combustion engines - Part 14: Hydraulic pulse durability for composite filter housings

This document specifies the hydraulic pulse durability test for composite filter housings. This method tests the ability of full-flow lubricating oil filters manufactured with composite pressure vessel materials for internal combustion engines to withstand an internal pressure surge and cyclic internal pressure variations experienced in the application at specified operating temperatures. These tests are intended for application to spin-on type filters and detachable filters with disposable elements constructed of composite or temperature-sensitive materials.

Titre manque — Partie 14: Titre manque

General Information

• Status: Published
• Publication Date: 23-Mar-2023
• ICS: 27.020 - Internal combustion engines
• Technical Committee: ISO/TC 70/SC 7 - Tests for lubricating oil filters
• Drafting Committee: ISO/TC 70/SC 7 - Tests for lubricating oil filters
• Current Stage: 6060 - International Standard published
• Start Date: 24-Mar-2023
• Due Date: 18-Dec-2022
• Completion Date: 24-Mar-2023

Relations

• Revises: ISO 4548-14:2016 - Methods of test for full-flow lubricating oil filters for internal combustion engines - Part 14: Cold start simulation and hydraulic pulse durability for composite filter housings
• Effective Date: 06-Jun-2022

Overview

ISO 4548-14:2023 specifies a hydraulic pulse durability test for full-flow lubricating oil filters used on internal combustion engines. The standard targets composite or temperature‑sensitive pressure-vessel materials (spin‑on and detachable filters with disposable elements) and defines procedures to verify that filter housings and seals withstand internal pressure surges and cyclic pressure variations at specified operating temperatures.

Keywords: ISO 4548-14:2023, hydraulic pulse durability, composite filter housings, full‑flow lubricating oil filters, spin‑on filters, detachable filters.

Key topics and requirements

• Scope: Tests ability of composite pressure vessels to resist internal pressure surge and cyclic pressure variations representative of service conditions.
• Test liquid & temperature: Use oil functional between −20 °C and 130 °C (or as agreed). Viscosity range: 5 mm²/s to 10 000 mm²/s across the temperature range.
• Preconditioning: Test assembly preconditioned at test temperature for a minimum of 4 hours (shorter allowed if justified).
• Test rig & instrumentation: Example circuit includes pump, accumulator (charged to ≈50% of maximum test pressure), valves, pressure sensor, heat exchanger and climatic chamber. Pressure transducers should be mounted as close as possible to the component. Frequency response: 0–2 kHz with amplitude ratio within 0 dB to −3 dB.
• Waveform & cycle rate: Cyclic pressure waveform provided (see Figure 2); default cycle rate 0.5 to 2 cycles/s unless customer specifies otherwise. Oscilloscope or equivalent required to monitor waveform and cycle times.
• Accuracy: Pressure measurement ±5%, time ±0.002 s, temperature ±1 °C (with ±2 °C variation allowed).
• Pass/fail and data analysis: Run until failure or until agreed cycle count. For multiple samples report mean, standard deviation and, if >7 samples, B10 value via Weibull analysis.
• Test report requirements: Includes test lab, filter ID, date, description, category, rated flow, test pressure/temperature/fluid, failure mode/location, cycles to failure, cycle rate, any deviations, etc.
• Default test values: Annex A lists default pressures/cycle counts when no manufacturer agreement exists (e.g., spin‑on light duty: extreme 1 000 kPa/1 000 cycles; normal 500 kPa/25 000 cycles).

Applications and users

ISO 4548-14:2023 is used by:

• Filter manufacturers validating composite housings and seals
• Automotive and engine OEMs specifying durability requirements
• Independent test laboratories conducting compliance and R&D testing
• Quality, reliability and design engineers assessing fatigue life under hydraulic pulses Practical uses include product development, supplier qualification, durability benchmarking and conformity testing for components where pressure transients threaten housing integrity.

Related standards

• ISO 4548‑1 (differential pressure/flow characteristics)
• ISO 4548‑5 (hydraulic pulse durability for non‑composite housings)
• ISO 19973‑1 (Weibull analysis / B10 methodology)
• ISO 9110‑1 / ISO 9110‑2 (measurement techniques)

Use ISO 4548-14:2023 when you need standardized, reproducible hydraulic pulse durability data for composite filter housings to support design validation, supplier agreements and regulatory or OEM specifications.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 4548-14
Second edition
2023-03
Methods of test for full-flow
lubricating oil filters for internal
combustion engines —
Part 14:
Hydraulic pulse durability for
composite filter housings
Reference number
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and graphical symbols . 1
3.1 Terms and definitions . 1
3.2 Graphical symbols . 1
4 Operational characteristics to be tested . 1
5 Test equipment .2
6 Test liquid . 2
7 Test temperature . 2
8 Accuracy . 2
9 Hydraulic pulse durability test . .2
10 Test report . 5
Annex A (informative) Values to be used for tests if no agreement is reached with
the manufacturer . 6
Bibliography . 7
iii
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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 70, Internal combustion engines,
Subcommittee SC 7, Tests for lubricating oil filters.
This second edition cancels and replaces the first edition (ISO 4548-14:2016), which has been technically
revised.
The main changes are as follows:
— the title of this document has been updated, removing "cold start simulation";
— the test system schematic has been added;
— the test system setup has been defined in more detail;
— the statistical evaluation in testing with multiple samples has been added.
A list of all parts in the ISO 4548 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
This document establishes standard test procedures for measuring the performance of full-flow
lubricating oil filter modules made of composite or temperature-sensitive materials for internal
combustion engines. The ISO 4548 series has been prepared in separate parts, each part relating to a
particular performance characteristic.
Together the tests provide the information necessary to assess the characteristics of a filter but, if
agreed between the purchaser and the manufacturer, the tests can be conducted separately.
v
INTERNATIONAL STANDARD ISO 4548-14:2023(E)
Methods of test for full-flow lubricating oil filters for
internal combustion engines —
Part 14:
Hydraulic pulse durability for composite filter housings
1 Scope
This document specifies the hydraulic pulse durability test for composite filter housings. This method
tests the ability of full-flow lubricating oil filters manufactured with composite pressure vessel
materials for internal combustion engines to withstand an internal pressure surge and cyclic internal
pressure variations experienced in the application at specified operating temperatures.
These tests are intended for application to spin-on type filters and detachable filters with disposable
elements constructed of composite or temperature-sensitive materials.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1219-1, Fluid power systems and components — Graphical symbols and circuit diagrams — Part 1:
Graphical symbols for conventional use and data-processing applications
ISO 4548-1, Methods of test for full-flow lubricating oil filters for internal combustion engines — Part 1:
Differential pressure/flow characteristics
3 Terms, definitions and graphical symbols
3.1 Terms and definitions
For the purposes of this document,
...