1、BSI Standards Publication BS ISO 6550-4:2014 Incorporating corrigendum August 2015 BS ISO 6550-4:2014 Road vehicles Sheath- type glow-plugs with conical seating and their cylinder head housing Part 4: M8 x 1 glow-plugsBS ISO 6550-4:2014 BRITISH STANDARD National foreword This British Standard is the
2、 UK implementation of ISO 6550-4:2014. Together with BS ISO 17747-1:2015, BS ISO 17747-2:2015 and BS ISO 17747-3:2015, it supersedes BS ISO 6550-4:2009 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MCE/22, Engines for road vehicles. A list of organi
3、zations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 20
4、15 ISBN 978 0 580 90562 9 ICS 43.060.50 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2014. Amendments/corrigenda issued since publication Date Text af
5、fected 31 August 2015 Implementation of corrigendum August 2015: supersession information correctedBS ISO 6550-4:2014 ISO 2014 Road vehicles Sheath-type glow- plugs with conical seating and their cylinder head housing Part 4: M8 x 1 glow-plugs Vhicules routiers Bougies de prchauffage fourreau et sig
6、e conique, et leur logement dans la culasse Partie 4: Bougies M8 x 1 INTERNATIONAL STANDARD ISO 6550-4 Third edition 2014-05-01 Reference number ISO 6550-4:2014(E)BS ISO 6550-4:2014ISO 6550-4:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless oth
7、erwise specified, 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
8、 below or ISOs member body in the country of the requester. ISO copyright office Case 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 SwitzerlandBS ISO 6550-4:2014ISO 6550-4:2014(E) ISO 2014 All rights reserved iii Conten
9、ts Page Foreword iv 1 Scope . 1 2 Normative references 1 3 Dimensions and tolerances . 1 3.1 General . 1 3.2 Glow-plugs 1 3.3 Cylinder head housing 5 3.4 Threads 6 3.5 Dimension limits of threads M8 1 6 4 Installation tightening torque 7 Annex A (informative) M8 1 glow-plugs with 10 mm hexagon and t
10、heir cylinder head housing .8 Bibliography .10BS ISO 6550-4:2014ISO 6550-4:2014(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 throu
11、gh 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 collabora
12、tes 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 c
13、riteria 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 subjec
14、t 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
15、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 ISOs adherence to the WTO principles in the Tech
16、nical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 1, Ignition equipment. This third edition cancels and replaces the second edition (ISO 6550-4:2009) of which it constitut
17、es a minor revision. ISO 6550 consists of the following parts, under the general title Road vehicles Sheath-type glow-plugs with conical seating and their cylinder head housing: Part 1: M14 1,25 glow-plugs Part 2: M12 1,25 glow-plugs Part 3: M10 glow-plugs Part 4: M8 1 glow-plugsiv ISO 2014 All righ
18、ts reservedBS ISO 6550-4:2014INTERNATIONAL ST ANDARD ISO 6550-4:2014(E) Road vehicles Sheath-type glow-plugs with conical seating and their cylinder head housing Part 4: M8 x 1 glow-plugs 1 Scope This part of ISO 6550 specifies the main characteristics of M8 1 sheath-type glow-plugs with conical sea
19、ting and their cylinder head housing, for use with diesel (compression-ignition) engines. 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.
20、For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 68-1, ISO general purpose screw threads Basic profile Part 1: Metric screw threads ISO 261, ISO general purpose metric screw threads General plan ISO 965-1, ISO general purpose metric screw
21、threads Tolerances Part 1: Principles and basic data ISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: Deviations for constructional screw threads ISO 2768-2:1989, General tolerances Part 2: Geometrical tolerances for features without individual tolerance indications ISO 8092-4:
22、1997, Road vehicles Connections for on-board electrical wiring harnesses Part 4: Pins for single- and multi-pole connections Dimensions and specific requirements 3 Dimensions and tolerances 3.1 General Unless otherwise specified, the general geometric tolerances in accordance with ISO 2768-2:1989, t
23、olerance class H, apply. 3.2 Glow-plugs Sheath-type glow-plug dimensions and tolerances shall be as shown in Figures 1 to 6, and Tables 1 and 2. ISO 2014 All rights reserved 1BS ISO 6550-4:2014ISO 6550-4:2014(E) Dimensions in millimetres Key a Major diameter, in accordance with ISO 965-1 or 965-3. b
24、 See Figure 2. c Hexagon. Figure 1 Glow-plug with pin terminal Dimensions in millimetres Figure 2 Detail of X of Figure 12 ISO 2014 All rights reservedBS ISO 6550-4:2014ISO 6550-4:2014(E) Dimensions in millimetres Key a Contour agreed between glow-plug and engine manufacturer. b Hexagon. Figure 3 Gl
25、ow-plug pin terminal Dimensions in millimetres Key a Hexagon. Figure 4 Glow-plug threaded terminal ISO 2014 All rights reserved 3BS ISO 6550-4:2014ISO 6550-4:2014(E) Dimensions in millimetres Key 1 pin ISO 8092-4:1997 Table 1, pin size 4 Figure 5 Optional glow-plug pin terminal Dimensions in millime
26、tres Key 1 glow-plug type A2, A4, A6, A8, B2, B4, B6 and B8 2 glow-plug type A1, A3, A5, A7, B1, B3, B5 and B7 a Contour optional. Figure 6 Reduced tip end and cone end Table 1 Glow-plug dimensions (dimension l 1 and l 2 ) Dimensions in millimetres l 1 a 0,5 27 42 57 67 72 87 102 l 2 a 0,5 20 25 28
27、30 35 aDimensions l 1and l 2to be combined as appropriate. Bold numbers are to be preferred.4 ISO 2014 All rights reservedBS ISO 6550-4:2014ISO 6550-4:2014(E) Table 2 Glow-plug dimensions Dimensions in millimetres Type Terminal Hexagon Body Glow-plug tube s e min. k 2 d 2 d 3 ref. l 3 min. d 4 0,2 d
28、 5 0,1 a min. A1 pin 8,0h13 8,6 93 6,0 10 4,0 A2 3,3 5 A3 4,4 A4 3,5 5 A5 M4 4,0 A6 3,3 5 A7 4,4 A8 3,5 5 B1 pin 123 4,0 B2 3,3 5 B3 4,4 B4 3,5 5 B5 M4 4,0 B6 3,3 5 B7 4,4 B8 3,5 5 3.3 Cylinder head housing The dimensions and tolerances of the cylinder head housing for sheath-type glow-plugs shall b
29、e as given in Figure 7 and Table 3. ISO 2014 All rights reserved 5BS ISO 6550-4:2014ISO 6550-4:2014(E) Dimensions in millimetres Key a Pitch diameter in accordance with ISO 965-1 or 965-3. 90 1 or 120 1 Figure 7 Cylinder head housing for 8 mm hexagon Table 3 Cylinder head housing dimensions Dimensio
30、ns in millimetres l 3max. 22 37 52 62 67 82 97 l 1a 27 42 57 67 72 87 102 l 4 To be specified by the engine manufacturer. al 3max. for cylinder head has to correspond to l 1of the glow plug as in this table. 3.4 Threads The threads of M8 1 glow-plug and the corresponding tapped hole in cylinder head
31、 shall be in accordance with ISO 68-1, ISO 261, ISO 965-1, and ISO 965-3. The thread M8 1 - 6g shall be used for the glow-plugs. The threads in the corresponding tapped holes in the cylinder heads shall be M8 1 - 6H. 3.5 Dimension limits of threads M8 1 Dimension limits of threads M8 1 are given in
32、Table 4.6 ISO 2014 All rights reservedBS ISO 6550-4:2014ISO 6550-4:2014(E) Table 4 Dimension limits of threads M8 1 Dimensions in millimetres Dimensions Plug thread M8 - 6g (on finished plug) Tapped hole in cylinder head M8 1 6H Major diameter max. 7,974 not specified min. 7,794 8,000 Pitch diameter
33、 max. 7, 324 7, 500 min. 7, 212 7, 350 Minor diameter max. 6,747 7,153 min. 6,596 a 6,917 aWith a root radius of fillet 0,100 mm (0,1 P). 4 Installation tightening torque The installation torque values shall be 9 Nm to 12 Nm. These values apply to unused nickel or zinc plated sheath-type glow-plugs
34、without lubricant on the threads. If glow-plugs are plated with a different material and/or the threads are lubricated the applicable torque values shall be agreed between the glow-plug manufacturer and the engine manufacturer. When the installation deformation by cylinder head housing material and
35、by glow-plug plating is big, consultation should be held between glow-plug manufacturers and engine manufacturers. ISO 2014 All rights reserved 7BS ISO 6550-4:2014ISO 6550-4:2014(E) Annex A (informative) M8 1 glow-plugs with 10 mm hexagon and their cylinder head housing Dimensions in millimetres Key
36、 a Major diameter, in accordance with ISO 965-1 and 965-3. b Hexagon. Figure A.1 Glow-plugs with threaded terminal and 10 mm hexagon Dimensions in millimetres Figure A.2 Glow-plug tip with reduced cylinder8 ISO 2014 All rights reservedBS ISO 6550-4:2014ISO 6550-4:2014(E) Dimensions in millimetres Ke
37、y a Pitch diameter, in accordance with ISO 965-1 and 965-3. Figure A.3 Cylinder head housing dimensions ISO 2014 All rights reserved 9BS ISO 6550-4:2014ISO 6550-4:2014(E) Bibliography 1 ISO 1101; Geometrical Product Specifications (GPS) General tolerancing Tolerances of form, orientation, location a
38、nd run-out10 ISO 2014 All rights reservedBS ISO 6550-4:2014BS ISO 6550-4:2014ISO 6550-4:2014(E) ISO 2014 All rights reserved ICS 43.060.50 Price based on 10 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publicat
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