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Technology Info >> Injector Nozzle type and connection size

 Injector Nozzle type and connection size
(ISO2697:1999
)

1.     Subject content and scope of application

This standard specifies the types and connection sizes of P type, S type and T type injectors nozzles for medium and small power diesel engines.  This standard is applicable to the classification of injector nozzles, that is it is divided into three types: shaft pin type (including throttle shaft pin type), hole type and long hole type.

2.       Main structure size of nozzles

2.1   Shaft needle nozzle size and tolerance

     The dimensions and tolerances of the pin needle nozzles are shown in following:

   

 

   Shaft needle nozzle

Type

Size

A

B

C

D

T

Rmax

ZSS

 

17h11

 

14c11

8  0

-0.4

 

19 0.2

16.3 +0.2

0

 

0.3

ZST

 

22h11

 

17.8h11

10 0

-0.4

 

30.5 0.2

21.3 +0.4

0

ZSP

 

14.3h11

 

11c11

6  0

-0.2

 

11 0.2

13.8 +0.2

0

 

0.3

 

2.2   Hole type nozzle fitting size and tolerance

            The hole type nozzle fittings are the same as the shaft pin type nozzle parts of Fig. 1 except for the dimension D in Fig. 2. The dimension D is shown in Table 2.

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