JB/T 9732-1999 JB/T 9732-1999 Standard pintle type fuel injection nozzle assembly JB/T9732-1999 Standard download decompression password: www.bzxz.net

ICS 43.060.40
Machinery Industry Standard of the People's Republic of China
JB/T9732-1999
negIso4010:1998
Delay pintle catibrating injection Dozzle1999-09-17 Issued
National Machinery Industry
2000-01-01 Implementation
JR/T9732-1999
This standard adopts ISO4010:1998 diesel engine auxiliary needle standard injection nozzle pair. Compared with ISO401:1998, this standard incorporates the test force method (diameter gap atmosphere measurement method) into this standard. This standard is a revision of 2.B194010-89 standard for pin-type nozzles. Editorial changes were made to the original standard during the revision, and the main technical content remained unchanged.
This standard replaces 2.B194010-69 from the date of implementation. It was proposed and approved by the China Standard Oil Pump Standardization Technical Committee. The drafting unit of this standard is Wuxi Oil Pump Nozzle Research Institute. The drafters of this standard are Zhang Limin, Zhu Fen, and 4. The standard was first issued in March 1989.
Mechanical Industry Standard of the People's Republic of ChinawwW.bzxz.Net
Delay pin type standard fuel injection nozzle pair
Delay pin type standard fuel injection nozzle pair JB/T9732—1999
neg1sod01n:1998
代719110-
This standard specifies the calibration size, air flow characteristics and measurement method of the standard fuel injection nozzle pair (hereinafter referred to as the standard pair) used for testing and adjusting the fuel injection pump on the oil recording test bench. The exact scope of use of this standard is related to the test specified in the notes. The suitability should be verified by the fuel injection manufacturer according to the specific situation, and the test specifications for each type of fuel pump are explained above. The approximate range is up to 150 L/cycle. 2 Dimensions and deviations
2.1 The deviation points of standard fuel injector nozzles should be cut and the dimensions should be as shown in Figure 1. 2.2 The dimensions of the dummy nozzle should be marked in Figure 2 and Table 1. 2.3 The clearance between the nozzle and the center hole of the valve body should be as small as possible, but it should be guaranteed to move freely. 3 Air flow characteristics of standard fuel injection couplings 3.1 Air flow characteristics of standard fuel injector nozzles should be as shown in Figure 3 and Table 2. 3.7 Cases for obtaining the control values ​​in Table 2;
) Environment: 0.098MP
6) Air flow rate: 20°C:
Flow meter accuracy level: +05%
Figure 1 Main dimensions of required parts for standard fuel injection nozzles
Approved by China Machinery Industry Bureau 19-Hu-17
2DD0-01-01 Implementation
Minimum quantity 600
Yuan 400
JB/T9732—1999
Figure 2 Dimensions of standard fuel injection nozzle pairs
Table 1 Dimensions
19 ± 0.2
Figure 3 Air flow characteristic curve
Maximum stroke
Needle lift
Maximum external product
Maximum product
Measurement conditions
FB/T9732—1999
Table 2 Air flow control value
ml tnin
120--220
328-238
210-220
In order to make the standard nozzle couple proportional to the effective coverage area, it is necessary to ensure that the pressure at the orifice of the standard suction end couple must be at least 0.6MPa lower than the ambient pressure during measurement. The energy flow rate characteristic curve is determined according to the laws of thermal under the conditions of an ambient pressure of 0.098MPa and an ambient temperature of 2. In order to obtain a relatively accurate characteristic, the measured results must be compared with the values ​​specified in Table 2. The readings of the meter used must be calibrated according to the manufacturer's standard flow meter. After this calibration, it must be calibrated and measured according to the conditions specified in Chapter 5 of this standard. The measuring device for measuring air flow rate using a float-type flow meter is shown in Figure 4. Treatment of Jiang Yan ratio: 2-rising dance number: 3-can be said to rise to explain Fei Guan-side pass
5-real seat table: 6-stop time: 7-a straight proof: 8-degree empty case Figure 4 Schematic diagram of airflow measurement device
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