ISO 2697 pdf download.Diesel engines — Fuel nozzles — Size “S”
1 Scope
This International Standard specifies the essential dimensional requirements for size “S” fuel nozzles used in diesel engines. These requirements allow the assembly and interchangeability of the nozzles in the corresponding nozzle holders. This International Standard is applicable to size “S” nozzles, which comprise hole type, long-stem nozzles (types A1 and A2) and pintle nozzles (type B). NOTE Type A1 and type B nozzles are the preferred types. The non-preferred hole type, short-stem nozzle, type C, is shown in annex A.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 2699, Diesel engines — Flange-mounted fuel injectors, size “S” — Types 2, 3, 4, 5 and 6 . ISO 7026, Diesel engines — Screw-in injection nozzle holders, types 20, 21 , 21 .1 and 27 for pintle nozzle size “S”, type “B” . ISO 7030, Road vehicles — Screw-mounted injection nozzle holders, types 1 2, 1 3, 1 4, 1 5, 1 6, 1 7, 1 8 and 1 9
4.2 Dimensions and tolerances of the assembly
The assembly dimensions and tolerances given in Figure 4 apply to nozzle types A1 , A2 and B and to nozzle holders of types 2 to 6 (ISO 2699), types 1 2 to 1 5 (ISO 7030) and types 20, 21 , 21 .1 and 27 (ISO 7026). The dimensions of the nozzle holder dowels and the nozzle dowel holes, as well as the dimensions and tolerances for their position, are necessary only if requested by the customer.
5 Other dimensions and specifications
Dimensions and requirements not specified in this International Standard are left to the discretion of the manufacturer.