JB/T 5173-1991 Injector assembly installation and connection dimensions JB/T5173-1991 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5173-1991
Injector assembly
Installation method and connection dimensions
Published on 1991-05-18
Implemented on 1992-01-01
Injector assembly
Installation method and connection dimensions
Subject content and scope of application
JB/T5173-1991
This standard specifies the installation method and connection dimensions of the injector assembly installed with S series, P series and T series injection nozzle pairs for medium and small power diesel engines.
This standard applies to the injector assembly installed with S series, P series and T series injection nozzle pairs for medium and small power diesel engines. 2
The meaning of the letters in this standard diagram: M—Oil inlet pipe thread diameter:
M—Oil return pipe screw thread diameter:
M2—Thread diameter connected to the cylinder head; L—Installation length: www.bzxz.net
A—Injector body outer diameter matching the cylinder head; B—Injection nozzle cap outer diameter.
3Injector assembly installation method and connection dimensions 3.1 See Figure 1 and Table 1 for the dimensions of flange-mounted injector assemblies. H
Axis-pin type
Approved by the Ministry of Machinery and Electronics Industry on May 18, 1991 Long hole type
Implemented on January 1, 1992
Recommended from 35
Every 5mm step
A or Bl)
JB/T5173-1991
25(d11)
(26)2)
Note: 1) The guide of the injector on the cylinder head can be A or B. If A is used, A>B. If B is used, B>A. 2) (26) Try not to use it,
3.2 See Figure 2 and Table 2 for the dimensions of the pressure plate mounted injector assembly. x*
PBS·type, PB·T type
b is a variant of a
PB.P...type
From 35, it is recommended to increase by 10mm
From 130, it is recommended to increase by 20mm
From 55, it is recommended to increase by 10mm
JB/T5173-1991
(M22×1.5）1)
Note: 1) (M22×1.5) and (45) are not used as far as possible. 3.3 The dimensions of the threaded (direct screw-in) injector assembly are shown in Figure 3 and Table 3. M
PL.S type (directly screw in)
Starting from 55, it is recommended to increase the speed by 10mm
25(d11)
(45）1)
PL.·P.. type
M24×2
JB/T5173-1991
Threaded type (screw in with connecting screw sleeve) The dimensions of the injector assembly are shown in Figure 4 and Table 4. 3.4!
Axis pin type
PLT.S type (screw in with connecting nut)
From 40 onwards, it is recommended to use every 10mm
Location pin position and size
Long hole type
4.1When there is a locating pin on the sealing end face of the S series injector assembly, its size is shown in Figure 5. The location and size of the locating pin should correspond to Figure 4 in JB5174.
e.16+3.07
2 hole 63
JB/T5173-1991
Position of inlet pool cover
Oil inlet pin placement
Pin 3h×8GB119-75
Figure 5 Position and size of positioning pin (S series) 263
4.2When there is a positioning pin on the sealing end face of the P series injector assembly, its size is shown in Figure 6. The position and size of the positioning pin should correspond to Figure 5 in JB5174.
Additional instructions:
Avoidance of inquiry hole placement
Position and size of positioning pin (P series)
This standard is proposed and managed by the Wuxi Oil Pump and Nozzle Research Institute of the Ministry of Machinery and Electronics Industry. This standard is drafted by the Wuxi Oil Pump and Nozzle Research Institute of the Ministry of Machinery and Electronics Industry. From the date of implementation of this standard, the original NJ237-81 "Injector Installation Method and Connection Dimensions" will be invalid.
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