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1、 Reference number ISO 7578:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 7578 Fourth edition 2008-12-15 Road vehicles Sheath-type glow- plugs General requirements and test methods Vhicules routiers Bougies de prchauffage du type fourreau Exigences gnrales et mthodes dessai Copyright International Orga
2、nization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 7578:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance
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5、very care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 All rights reserved. Unless otherwise speci
6、fied, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying 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 office Ca
7、se postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001
8、Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 7578:2008(E) ISO 2008 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies)
9、. 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
10、-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
11、 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
12、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 7578 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 1, Ign
13、ition equipment. This fourth edition cancels and replaces the third edition (ISO 7578:2001), which has been technically revised. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo rep
14、roduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,-
15、 INTERNATIONAL STANDARD ISO 7578:2008(E) ISO 2008 All rights reserved 1 Road vehicles Sheath-type glow-plugs General requirements and test methods 1 Scope This International Standard specifies general requirements and test methods for sheath-type glow-plugs. Detailed test condition(s) and/or require
16、ment(s) are agreed between the glow-plug manufacturers and the engine manufacturer. It is applicable to those sheath-type glow-plugs conforming to ISO 6550-1, ISO 6550-2, ISO 6550-3 and ISO 6550-4, used in compression ignition (diesel) engines. 2 Normative references The following referenced documen
17、ts 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 6550-1, Road vehicles Sheath-type glow-plugs with conical seating and their c
18、ylinder head housing Part 1: M14 1,25 glow-plugs ISO 6550-2, Road vehicles Sheath-type glow-plugs with conical seating and their cylinder head housing Part 2: M12 1,25 glow-plugs ISO 6550-3, Road vehicles Sheath-type glow-plugs with conical seating and their cylinder head housing Part 3: M10 glow-pl
19、ugs ISO 6550-4, Road vehicles Sheath-type glow-plugs with conical seating and their cylinder head housing Part 4: M8 1 glow-plugs IEC 60068-2-6, Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoidal) 3 Terms and definitions For the purposes of this document, the following terms and de
20、finitions apply. 3.1 nominal voltage voltage as marked on the housing of the glow-plug NOTE The nominal voltage of the glow-plug is generally not identical to the supply voltage of the electrical system. 3.2 test voltage voltage(s) applied to the glow-plug under test Copyright International Organiza
21、tion for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 7578:2008(E) 2 ISO 2008 All rights reserved 4 Test methods and requirements 4.1 General If n
22、ot otherwise specified, all tests shall be carried out at room temperature (RT) (23 5) C. 4.2 Gas tightness 4.2.1 Test Mount the sample on a test assembly with the tightening torque as specified in the relevant part of ISO 6550. Subject the sample to a pressure of 4 MPa 40 bar 1) above ambient air p
23、ressure on the sheath end for a duration of 15 s. Use air, nitrogen, carbon dioxide or any other detection gas. 4.2.2 Requirements The measured total leakage shall not exceed 2 cm3/min. If neither air nor nitrogen is used, the leakage rate shall be converted to that of air using the specific volume
24、of the detection gas. 4.3 Thermal characteristic 4.3.1 Test sample preparation Before the test, pre-heat the sample to oxidation at the nominal voltage of the glow-plug and then allow it to cool to RT. The time for oxidation shall be as agreed between the glow-plug manufacturer and the engine manufa
25、cturer, e.g. three times the duration of the glow cycle. 4.3.2 Test Carry out the test using a test installation in accordance with Figure 1 (see Table 1), equipped with a cooling device by which the temperature can be maintained below 30 C, measured at the seating of the glow-plug housing. If the t
26、hermal behaviour is measured in accordance with a specific application, this shall be by agreement between the glow-plug manufacturer and the engine manufacturer. Carry out the test at the test voltage(s) of the glow-plug as specified in the description of the glow plug system. Temperature measureme
27、nts shall be made without direct contact. 1) 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without
28、 license from IHS -,-,- ISO 7578:2008(E) ISO 2008 All rights reserved 3 Key Z maximum measuring zone Figure 1 Test installation 4.3.3 Requirements The hottest point of standard warm-up sheath-type glow-plugs shall be within the measuring zone, Z, as shown in Figure 1. Z shall have a maximum length o
29、f 8 mm. The temperature/time characteristic of the glow-plug shall be agreed between the glow-plug manufacturer and the engine manufacturer. 4.4 Resistance at room temperature 4.4.1 Test Use a suitable measuring device which does not distort the resistance (e.g. 4-pole measuring device). 4.4.2 Requi
30、rement The measured resistance shall be as agreed between the glow-plug manufacturer and the engine manufacturer. 4.5 Current characteristic 4.5.1 Test Use the test installation as specified in 4.3.2. Record the current characteristic by measuring the initial current, its gradient and the current at
31、 thermal equilibrium. 4.5.2 Requirement The recorded characteristics shall be as agreed between the glow-plug manufacturer and the engine manufacturer. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/
32、2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 7578:2008(E) 4 ISO 2008 All rights reserved 4.6 Higher voltage 4.6.1 Test Use the test installation as specified in 4.3.2. Apply a test voltage of 130 % of the nominal voltage of the glow- plug for the durati
33、on (15 1) s. 4.6.2 Requirement After the test, the glow-plug shall still meet the requirements of 4.3, 4.4 and 4.5. 4.7 Vibration (sinusoidal) 4.7.1 Test method The glow-plug, mounted as provided for and tightened as specified, shall be subjected to a vibration test of type Fc in accordance with the
34、 test method in IEC 60068-2-6, using the parameters given in Table 1. Table 1 Values for vibration test Frequency f Hz Amplitude mm Acceleration 50 f u 160 0,3 160 f u 500 30 g (294 m/s2) Sweep rate: Vibration directions: Duration: 1 octave/min glow-plug axis and perpendicular 8 h in each direction
35、4.7.2 Requirement After the test specified in 4.7.1, the glow-plug shall show no visual damage and shall meet the requirements mutually agreed between the glow-plug manufacturer and the engine manufacturer. 4.8 Endurance 4.8.1 Test The test conditions shall be agreed between the glow-plug manufactur
36、er and the engine manufacturer. The agreed conditions shall include at least the following: number of cycles, voltage characteristic, installation (i.e. in accordance with 4.3.2 or in a simulated cylinder head), environmental condition (e.g. air speed and temperature), cooling, and cycle start tempe
37、rature. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 7578:2008(E) ISO 2008 All rights reserved 5 4.8.2 Re
38、quirement The glow-plug manufacturer and the engine manufacturer shall agree on the performance. 5 Marking and labelling The glow-plug shall be permanently marked with at least the following: the nominal voltage of the glow-plug, and the manufacturers name, trademark or symbol. Copyright Internation
39、al Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO 7578:2008(E) ICS 43.060.50 Price based on 5 pages ISO 2008 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 05:41:03 MSTNo reproduction or networking permitted without license from IHS -,-,-