ISO 2698-2016 Diesel engines - Clamp-mounted fuel injectors types 7 and 28《柴油发动机 7型和28型夹紧式注油器》.pdf

1、 ISO 2016 Diesel engines Clamp-mounted fuel injectors, types 7 and 28 Moteurs allumage par compression Porte-injecteurs de combustible complets fixation par patte, types 7 et 28 INTERNATIONAL STANDARD ISO 2698 Fourth edition 2016-11-15 Reference number ISO 2698:2016(E) ISO 2698:2016(E)ii ISO 2016 Al

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4、 copyrightiso.org www.iso.org ISO 2698:2016(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Dimensions and tolerances . 1 4.1 Injectors, types 7 and 28 1 4.2 Clamp location . 3 4.3 Preferred length, L 4 5 Other specifications 4 Bibliography 5 ISO 2016 All rights res

5、erved iii Contents Page ISO 2698:2016(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 b

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7、technical 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

8、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

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11、 to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html. The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 34, Propulsion, powertrain, and powertrain fluids. This fourth edition cancels and replaces the third edition (ISO 2698:2013), which has been

12、 technically revised.iv ISO 2016 All rights reserved INTERNATIONAL ST ANDARD ISO 2698:2016(E) Diesel engines Clamp-mounted fuel injectors, types 7 and 28 1 Scope This document specifies dimensions necessary for the mounting of fuel injectors in diesel (compression- ignition) engines. The location of

13、 the fuel inlet and leak-off connections, and the dimensions of the clamp are not defined since they vary according to the particular application. This document applies to clamp-mounted injectors of types 7 and 28 made of an integral nozzle and nozzle holder design with a 9,5 mm (nominal) injector s

14、hank diameter. 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 docu

15、ment (including any amendments) applies. ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture. 3 T erms a nd definiti ons No terms and definitions are listed in this document. ISO and IEC maintain terminological

16、 databases for use in standardization at the following addresses: IEC Electropedia: available at http:/ /www.electropedia.org/ ISO Online browsing platform: available at http:/ /www.iso.org/obp 4 Dimensions and tolerances 4.1 Injectors, types 7 and 28 Dimensions and tolerances of injectors of types

17、7 and 28 are given in Figure 1 and Figure 2, respectively. ISO 2016 All rights reserved 1 ISO 2698:2016(E) Dimensions in millimetres Surface roughness in micrometres, measured according to ISO 4288 Key 1 sealing washer 2 nozzle holder 3 seal 4 nozzle 5 engine a These flats are optional. b See 4.3. c

18、 With commercial tolerances (before compression). d The outer diameter of the seal shall be chosen such that it provides appropriate sealing with the injector bore. Figure 1 Clamp-mounted injector, type 72 ISO 2016 All rights reserved ISO 2698:2016(E) Dimensions in millimetres Surface roughness in m

19、icrometres, measured according to ISO 4288 Key 1 dust/water seal 2 nozzle holder 3 seal 4 nozzle 5 engine a These flats are optional. b See 4.3. c With commercial tolerances (before compression). d This dimension determines the distance between the reference plane ZZ and the point of intersection of

20、 the injection holes axes with the injector axis, when the sealing washer is compressed; it varies with nozzle sac design. Figure 2 Clamp-mounted injector, type 28 4.2 Clamp location Dimensions and tolerances for the clamp location as related to the injector are given in Figure 3. Dimension, X, and

21、thread diameter, A, for the clamp fastener, as given in Table 1, are preferred values; they can vary with application, i.e. depending on cylinder head design. ISO 2016 All rights reserved 3 ISO 2698:2016(E) Key 1 engine 2 injector bore a Minimum length as required. b Clamp fastener thread. Figure 3

22、Clamp location for injectors, types 7 and 28 Table 1 Injector type X, A and B Dimensions in millimetres Injector type X 0,3 A anom. B min. 7 and 28 18,4 M8 1,25 15,8 25 M10 1,5 16,9 aFor fasteners of property class 9,8. 4.3 Preferred length, L The length, L, determines the distance between the refer

23、ence plane YY and the point of intersection of the injection holes axes with the injector axis (see Figure 1 and Figure 2); it varies with the application, i.e. depending on the cylinder head design. The dimensions and tolerances for the preferred length, L, are given in Table 2. Table 2 Injector ty

24、pe L Dimensions in millimetres Injector type L 0,3 7 and 28 81,4 5 Other specification s Dimensions and requirements not given in this document are left to the discretion of the manufacturer.4 ISO 2016 All rights reserved ISO 2698:2016(E) Bibliography 1 ISO 898-1, Mechanical properties of fasteners

25、made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread 2 ISO 2692, Geometrical product specifications (GPS) Geometrical tolerancing Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR) 3 ISO 7876-2, Fuel injection equipment Vocabulary Part 2: Fuel injectors ISO 2016 All rights reserved 5 ISO 2698:2016(E) ISO 2016 All rights reserved IC S 43.060.40 Price based on 5 pages