1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 4548-7:2012Methods of test for full-flow lubricating oil filters forinternal combustion enginesPart 7: Vibration fatigue testBS ISO 4548-7:2012 BRITISH STANDARDNational fo
2、rewordThis British Standard is the UK implementation of ISO 4548-7:2012. Itsupersedes BS 7403-7:1991 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/21/5, Filters for lubricating oil.A list of organizations represented on this committee can beobtain
3、ed on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 71007 0ICS 27.020Compliance with a Bri
4、tish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 4548-7:2012 ISO 2012Methods of test for full-flow
5、 lubricating oil filters for internal combustion engines Part 7: Vibration fatigue testMthodes dessai des filtres huile de lubrification passage intgral pour moteurs combustion interne Partie 7: Essai de fatigue aux vibrationsINTERNATIONAL STANDARDISO4548-7Second edition2012-10-15Reference numberISO
6、 4548-7:2012(E)BS ISO 4548-7:2012ISO 4548-7:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopy
7、ing and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS I
8、SO 4548-7:2012ISO 4548-7:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative reference . 13 Terms, definitions and graphical symbols . 13.1 Definitions . 13.2 Graphical symbols 14 Principle 15 Test rig . 16 Test liquid 27 Vibration fatigue test . 28 Test report . 4
9、Bibliography 6BS ISO 4548-7:2012ISO 4548-7:2012(E)ForewordISO (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
10、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
11、 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 ad
12、opted 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 pat
13、ent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 4548-7 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、-7:1990), which has been technically revised.ISO 4548 consists of the following parts, under the general title Methods of test for full-flow lubricating oil filters for internal combustion engines: Part 1: Differential pressure/flow characteristics Part 2: Element by-pass valve characteristics Part
15、3: Resistance to high differential pressure and to elevated temperature Part 4: Initial particle retention efficiency, life and cumulative efficiency (gravimetric method) Part 5: Method of test for cold start simulation and hydraulic pulse durability Part 6: Static burst pressure test Part 7: Vibrat
16、ion fatigue test Part 9: Inlet and outlet anti-drain valve tests Part 11: Self-cleaning filters Part 12: Filtration efficiency using particle counting, and contaminant retention capacity Part 13: Static burst pressure test for composite pressure vessel materials Part 15: Vibration fatigue test with
17、composite materialsiv ISO 2012 All rights reservedBS ISO 4548-7:2012INTERNATIONAL STANDARD ISO 4548-7:2012(E)Methods of test for full-flow lubricating oil filters for internal combustion engines Part 7: Vibration fatigue test1 ScopeThis part of ISO 4548 specifies a method of testing the construction
18、al integrity of full-flow lubricating oil filters to withstand engine vibrations. This test is intended for application to spin-on type filters and detachable filters with disposable elements with a maximum flow rate of 100 l/min.This test method is intended for test parts made from materials that d
19、o not experience mechanical property changes within the temperature range experienced in service. The test may be applied to other filters if thought applicable by agreement between the filter manufacturer and the purchaser.2 Normative referenceThe following referenced documents are indispensable fo
20、r 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 4548-1, Methods of test for full-flow lubricating oil filters for internal combustion engines Part 1:
21、 Differential pressure/flow characteristics3 Terms, definitions and graphical symbols3.1 DefinitionsFor the purposes of this document, the terms and definitions given in ISO 4548-1 apply.3.2 Graphical symbolsThe graphical symbols used in this part of IS0 4548 are in accordance with ISO 1219 1.4 Prin
22、cipleIntegrally mounted oil filter assemblies, including filter heads, adaptors, mounting brackets, etc., are subjected to forcing frequencies due to engine or installation vibrations. The test method specified in this part of ISO 4548 verifies the ability of the filter assembly to withstand these v
23、ibrations for a predetermined number of cycles, while under pressure.5 Test rigThe test rig shall comprise the following components, together with the necessary tubing, connectors and supports (see Figure 1):a) electro-mechanical vibrator, together with the necessary hardware and electronics to cont
24、rol and monitor displacement, velocity and acceleration; ISO 2012 All rights reserved 1BS ISO 4548-7:2012ISO 4548-7:2012(E)b) oil pressure source, which may be manually or mechanically operated;c) device to measure oil pressure, with sufficient range to cover the rated pressure of the test filter;d)
25、 two accelerometers, featuring linear calibration and ranges appropriate for the part being tested;e) filter to be tested, together with filter head or adaptor.3165274Figure 1 Test rig: first arrangementKey1 Output accelerometer2 Filter head or adaptor3 Axis of excitation4 Pressure source5 Input acc
26、elerometer6 Oil filter under test7 Vibrator table6 Test liquidThe test liquid shall be oil with a kinematic viscosity of less than 10 mm2/s 5 mm2/s at ambient temperature ISO viscosity class ISO VG22 at 63 C or SAE 5W at 68 C (see 2 and 3).7 Vibration fatigue test7.1 Install the filter on the filter
27、 head or adaptor, applying the recommended torque or angle of rotation for the filter to be tested.7.2 Mount the filter and head assembly on a rigid bracket or adaptor plate with high deformation resistance, using suitable jointing or sealant to ensure leak-proof mating surfaces.7.3 Rigidly mount th
28、e bracket or adaptor plate/filter assembly on the vibrator table, ensuring that the filter polar axis is at right angles to the axis of excitation (see Figure 1).2 ISO 2012 All rights reservedBS ISO 4548-7:2012ISO 4548-7:2012(E)7.4 Connect the filter to a pressure gauge and to a source of oil pressu
29、re at normal ambient temperature, using flexible tubing in such a way as to ensure that it does not interfere with the vibration of the filter unit.7.5 Attach the input accelerometer to the filter head/adaptor and the output accelerometer to the filter, positioned approximately 100 mm from the top f
30、ace of the sealing ring, or at a distance equivalent to 0,85 of the filter length if the filter is shorter than 120 mm. The polar axis of both accelerometers shall be parallel to the axis of excitation (see Figure 1). Make the appropriate electrical connections between the accelerometer, vibration c
31、ontrol and monitoring equipment.7.6 Ensure that the test filter is filled with the test liquid and that all entrapped air has been expelled from the assembly. Pressurize the assembly to the rated pressure of the filter, or as agreed upon by the manufacturer and customer. If no test pressure is given
32、, then pressurize the test filter 500 kPa. This pressure should be maintained throughout the duration of the test.7.7 Start the vibrator and conduct a resonant search up to a frequency of 400 Hz, maintaining peak input acceleration at a constant value of 60 0.3 m/s2, unless otherwise agreed upon by
33、the filter manufacturer and customer.Use the following criteria to determine the frequency at which to perform the fatigue test in 7.8. If resonance occurs at a single frequency, then carry out the test at that frequency. If resonance occurs at more than one frequency, carry out the test at the freq
34、uency which exhibits the maximum amplitude (peak-to-peak displacement). If resonance does not occur, carry out the test at a frequency of 150 Hz.Adjust the power of the vibrator to give peak input acceleration as agreed between the filter manufacturer and engine manufacturer or, in the absence of su
35、ch an agreement, an acceleration of 60 m/s2, and determine the total amplitude of vibration.NOTE The total amplitude (peak-to-peak) of vibration, S, in metres, can be calculated as follows:Saf=222piwherea is the peak acceleration, in metres per second squared;f is the frequency of vibration, in Hert
36、z.7.8 Test the assembly to a total of 107cycles unless prior failure occurs. Commence testing at the frequency determined in 7.7. Since the resonant frequency of the assembly under test could vary throughout the test, verify the test filter resonance periodically. This can be done automatically by s
37、haker controllers with resonance tracking. Otherwise, repeat the procedure described in 7.7 and correct the frequency values after each 5 105cycles and continue with the test.7.9 If 107cycles can be completed without apparent failure, then repeat the procedures given in 7.1 to 7.8 but with the test
38、filter oriented such that the polar axis is normal to the axis of excitation. Position the accelerometers as shown in Figure 2.7.10 If 107cycles in the second direction can be completed without apparent failure, determine the removal torque or angle of rotation of the test filter for comparison with
39、 the initial setting.7.11 Drain the test of fluid and carefully dismantle it to reveal any visual signs of internal damage. ISO 2012 All rights reserved 3BS ISO 4548-7:2012ISO 4548-7:2012(E)3165247Figure 2 Test rig: second arrangementKey1 Pressure source2 Input accelerometer3 Adaptor4 Axis of excita
40、tion5 Oil Filter under test6 Output accelerometer7 Vibrator table8 Test reportThe test report shall include at least the following:a) the name of the test establishment;b) the filter type (manufacturer, model number, and batch number);c) the date of the test;d) a description of the filter and whethe
41、r it is new or used; if it is used, the approximate period of service;e) the rated flow, in litres per minute;4 ISO 2012 All rights reservedBS ISO 4548-7:2012ISO 4548-7:2012(E)f) the test pressure, in kPa;g) the amplitude and frequency of vibration;h) the mode of failure and its location;i) the numb
42、er of cycles to failure or number of cycles completed;j) the torque applied initially to install spin-on filter and at the end of the test to remove the filter (in Newton metres). ISO 2012 All rights reserved 5BS ISO 4548-7:2012ISO 4548-7:2012(E)Bibliography1 ISO 1219 (all parts), Fluid power system
43、s and components Graphic symbols and circuit diagrams2 ISO 3448, Industrial liquid lubricants ISO viscosity classification3 SAE J300c, Engine oil viscosity classification6 ISO 2012 All rights reservedBS ISO 4548-7:2012BS ISO 4548-7:2012ISO 4548-7:2012(E) ISO 2012 All rights reservedICS 27.020, 17.16
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