JB/T 9734-1999 Technical requirements for fuel injection pump test bench
Some standard content:
ICS 43.060.4F
Machinery Industry Standard of the People's Republic of China
JB/T9734-1999
Fuel injection pump test bench
IS0 4008-1 : 1980
IS0 4008-2 : 1983
Technical speciflcations for fuel injection puimp test bench1999-09-17 Issued
State Machinery Industry Bureau Issued
2000-01-01 Implementation
JB/T9734-1999
This standard adopts TS04008-1:1980 (Road Vehicle Fuel Injection Test Part 1: Dynamic Conditions) and TS04008-2:1983 Road Vehicle Fuel Injection Pump Test Part 2: Dynamic Conditions. Compared with TS04008-1:1980 and TS04008-2:1983, this standard does not include the content of the test method. The test is to meet the requirements of GB14096-1993 "Fuel Injection Pump Test Bench Test". This standard is for 7 2BJ94016-90 revision of the technical requirements for fuel injection pump test benches. Compared with 2BJ94016-90, this standard has the following major technical changes: "This standard applies to fuel injection pump test benches used in fuel injection nozzle maintenance stations" was added to the scope. - In 42.2 "Transformation fluctuations under constant load", separate requirements for fuel injection pump test benches used in maintenance stations were added. In the table, the nozzle opening pressure was changed from 18MP to 17.2, and the calibration point per low cycle oil pan [mm] was changed to the calibration point per 200 oil supply times (c
- according to the actual number of 4.2.5 and 14.2.6 in the original standard, i.e. the rigidity of the coupling and the stability of the fuel injection system installation, are no longer inspection items, because their influence on the test bench can be controlled by testing other dynamic performance items. For example, the rigidity of the coupling can be guaranteed by testing the angular displacement. 4.2.1 in the original standard, “the curve to be provided by the test bench manufacturer”, is cancelled. This is because in actual use, this item can be replaced by 4.2.12 in the standard, “the test bench manufacturer shall provide the main parameters and basic data of the test bench”. According to IS04008-1 and the geometry and position specifications The definition and inspection standards of the difference have been revised, the technical requirements for the injection system test and the use requirements have been rewritten, and the regulations on the transfer of the test bench have been revised. In order to be consistent with 3.8 and 3.9 in GB/T5770199, the original standard "the oil unevenness rate of the injector assembly on the same test bench is ±0.5%" has been changed to 4.3.14 of this standard "the oil unevenness rate of the standard injector assembly on the same test bench is ≤2%", and "the maintenance station shall not show 4% in the oil system test bench", and the calculation formula has been changed to: 5 ± 210a. -9- 100%
The "machine is centrifugal type\ is less than 1 level" in the original standard 4.\ has been cancelled. "According to the actual use requirements of the standard, the provisions on the repeated degree of the test bench are added. According to the requirements of GB/T1.3199, the provisions of the inspection rules are added. The provisions of the transportation requirements are added. This standard replaces ZBJ94016-90 from the date of implementation. This standard is proposed and managed by the Technical Committee for Standardization of Fuel Injection Pumps. The drafting units of this standard are: Qian'an Test Equipment Factory and Wuxi Fuel Pump Research Institute. The main drafters of the standard are: Yan Yang, Xu Nian'an, Huang Cunchen, and Zhu Changfen. This standard was first issued in 190 as NJ198-80 and was revised as ZBJ94016901 in 1990.
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Fuel Injection Pump Test Bench
Technical conditions for fuel injection pump test benches This standard specifies the technical specifications, inspection rules and marking, packaging, and storage of the instantaneous oil injection test bench (hereinafter referred to as the test bench). This standard is applicable to the oil injection test bench used for routine verification of the injection assembly of high-speed oil loading machines and the conventional test bench used for the oil injection nozzle station.
2 Referenced standards
The text included in the standard package constitutes the meaning of the standard by reference in this standard. The edition indicated is valid at the time of publication of this standard. All standards will be revised in advance. Parties using non-standard standards should consider the possibility of using the newest edition of the following standards: GB 252—.1494
GRT 2828,198T
GR/T8029
G/T4096
E/T 8121—1999
JD/T9733—1999
JB/T9735—1999
3 Definitions
Light diesel
Counting and sampling procedures and sample tables (applicable to continuous batch inspection of diesel fuel injection pumps
Oil suction residual test bench, test method
Oil injection pump test bench for diesel engine fuel pipe assembly standard oil pump technical conditions
Oil pump test bench for standard oil pan assembly, technical specifications This standard adopts the following definitions
3.1 Specifications Anguiarcreep
Lift should be small The limited displacement between the two parts in the angle direction. 3.2 Backlash
The angular direction between the two parts
3.3 Coupling mounting surface couplingmountingface The surface of the drive shaft (or the handover part of the turntable) used to connect the coupling. 3.4 Coupling output drive surface couplingoutpurdrivingtace Also swollen (or the effect of the coupling shaft 1. The coupling! 3.5 Coupling stiffness Coupling stiffness The torsional stiffness between the coupling mounting surface and the coupling output tightening surface: 3.6 Drive shaft drive The part that connects the turntable to the coupling mounting surface, approved by the State Machinery Industry Bureau on September 17, 1999, and implemented in 2000-(h1-01). 3.7 Drive shaft drive shaft The driving shaft of the source drive shaft. 3.8 Turntable wheel The turning wheel connected to the drive shaft. 3.9 Full load full load JR/T 9734--1999
The power required when the test bench is capable of adjusting the maximum fuel supply (rated fuel supply) of the maximum injection object. 3.10 Net injection torque pekinjectionlurquThe maximum torque reached within the injection code period at full load: 3. The average speed drop caused by the increase in load at any given speed position. spccddroop nfan injectionpumpgovernor3.2 Speed drop of the speed regulator
The average speed drop required for the injection pump to increase from the minimum to the maximum speed. 3.13 Zero error
The difference between the actual reading of the test oil plate of the system and the oil indicated by the system. 3.14 Count error
The error caused by the error of the internal counting mechanism, the interrogation mechanism and the actuator system: 4 Technical requirements
4.1 The test bench shall be specified by the military The product drawings and technical documents approved by the manufacturer shall be manufactured in accordance with the requirements of this standard and the requirements shall be met. 4.2 Requirements
4.2. [When running on the speed fluctuation test bench under the specified load and under the specified voltage conditions, the speed of the driving shaft shall be determined for a period of not less than 1m. a) When the speed is greater than 0T/mn, the speed fluctuation rate shall not exceed .25%; b) When the speed is equal to or greater than 80urmin, the speed fluctuation value shall not exceed 2rrina, shall not exceed 0.5%, and An shall not exceed ±4mm. Table 1 Dynamic performance test load pump list
Test bench
>75-11
11-185
Fish-carrying environment pure pulp
No. 1
A type pump
2 times
"Injection nozzle
Open tire pressure small
Test time
Speed range
≤ 1200
e:[200
Negative oil supply state number
Calibration point
Oil supply sensitivity
EHI modification
29 ± 0.5
42±05
15 ± 0.5
42 ± 0.5
211 + 0.5
JR/T 9734-1999
Speed fluctuation rate history and passive value, connect formula () and formula (2) to calculate: ± =\m(or ma)-nx100%
Where:
Speed passive rate;
Maximum speed during the setting period. /mn
monthmin--the minimum speed during the measurement period, /min;m
the average speed during the measurement period, rn:
the number of cycles of speed recording during the measurement period; the actual speed measured each time during the measurement period.
A,-n【or n,]
where: An
speed fluctuation value, rmin.
4.2.2 Moment of inertia of the turntable
The turntable should be able to provide all the energy required by the fuel injection pump with its own stored energy without relying on the transmission system: and meet the requirements of 4.3.3
The maximum rotation speed of the turntable is calculated according to formula (3): 4802.
Where: The rotation speed of the turntable, ke·m: 2. The maximum cyclic fuel supply per unit of the fuel injection pump allowed by the test bench, mm\: The test speed, r.mim
4.2. 3. The speed of the passive negative transmission is caused by the change of the ambient torsional delay of the test pump. The test bench dynamic coupling interface is in the instantaneous rotation fluctuation within each revolution. a) When the speed is 0.000 rpm, the speed fluctuation rate shall not exceed 1%; b) When the speed is 600 rpm, the speed fluctuation value shall not exceed 6 rpm. The negative transmission during the measurement is in accordance with the provisions of the table. The speed of the first working (all cylinders) and the speed value are calculated according to formula [4] and formula (5):
=x100%
Wherein:
Speed fluctuation rate:
-the maximum speed of a cycle during the measurement period,/min: n. and \..the minimum speed of the same cycle, rmin-average speed, min;
&n,\Hn'.
Wherein: n-…speed fluctuation value in the same period, nmin【4]
4.2:4Drive shaft torsion degree
JB/T9734- 1999
When subjected to the peak injection torque, the torsional deformation of the drive shaft shall not exceed 0.02. 4.2.5 Test speed drop
In the test range allowed by the test, any injection pump shall be verified. The speed drop of the sensitive test oil system between no load and full load shall not exceed 12% of the speed drop of the tested governor. The speed regulation size of the governor shall be determined by the specific ordering agreement and shall not exceed 5% in general. 4.2.6 Test the torsional resonance of the transmission system at the allowable load. When the load and speed range are within the range, the residual torque of the fuel injection is not allowed to cause the mass of the moving parts in the transmission system to rotate with the torque of the fuel injection. 4.2.7 Relative angular displacement
When subjected to the effect of the fuel injection torque twice the value of the fuel injection, relative angular displacement is allowed between any two interacting mating surfaces between the turntable and the output end of the coupling. The maintenance station does not meet the requirements of 4.2.2-42.7 in the test bench. 4. 3. 8
There shall be no side clearance in the entire pump transmission system from the dial to the coupling output end movable surface. 4.2.9 Requirements for oil injection system installation
The structure of the entire oil injection system installation bracket shall ensure that the center line of the driven shaft is coaxial with the center line of the driving shaft at the coupling output end surface, and the tolerance is not more than 10.26mm. The parallelism tolerance of the two axis lines within a length of 300mm is not more than 0.25mm. 4.2.10 The test bench manufacturer shall provide the following important information and basic data of the test bench: a) output power, speed range and speed drop; b) rotational inertia of the turntable: c) within the tolerance range specified in 4.2.1-4.2.6, the maximum oil injection potential and test speed that the test bench can verify. 4.3 Working conditions requirements
4.3.1 Test oil container
Under normal working conditions, the inner surface of the oil tank containing the test oil is not allowed to be rusted, and it should be equipped with a tight oil tank seal. The oil on the workbench surface must not mix into the test oil circuit to ensure the cleanliness of the test oil. 4.3.2 Acid oil supply capacity
Send the test oil from the oil tank to the injection box replacement joint. When the oil supply pressure is stabilized at 0.5MPa, its flow rate per minute meets the requirements of Table 2.
Table 2, test bench oil system oil level table
>4-5 5
>5.5 -7.5
4.3.3 The supply pressure of the test bench can be adjusted according to the different requirements of the test spray pool and remain stable in any working position. When the pump inlet pipe has an expansion joint and the other end is closed, under any oil supply pressure, the pressure cycle fluctuation measured at the expansion joint from the maximum value to the minimum value shall not exceed 5%; when the average supply pressure is less than or equal to 0.03MPa, no requirement is made. When there is a violation, the oil pressure shall not be less than U.4MPa and the oil production pressure shall not be less than 4MPa. 4bzxz.net
JB/T 9734-1999
4.3.4 During the test, the oil leakage should be automatically controlled and kept within the allowable range of 4±2: the heat strength of the oil should not damage the test machine. 4.3.5 Test oil filter accuracy
The particle diameter of the test oil is 0.005mm, and the average fluorine particle interception efficiency is: 80% to 90%
4.3.6 The base cup of the test bench must be clear and accurate. The minimum scale should not be greater than 1% of the full scale, and the scale error should be within 0.5% of the full scale.
4.3. The operating temperature of the water-forging transmission system shall not exceed 1%. 4.3. The scale division value of the test bench turntable shall be less than or equal to 1.5°, and the error between any scales shall not exceed 15″. The layout of the scales will cause visual errors.
4.3.9 The error of the measurement system shall be as low as 0.5% of the maximum capacity of other measurement systems. 4.3.10 The counting system shall be accurate and flexible, and meet the requirements of 100~1000 times of counting in each gear. The counting error of the whole system shall be less than 10 times. 4.3.11 The test bench shall be used for calibration The oil system should comply with the provisions of GB8029, and the light diesel oil specified in GB252 is allowed. 4.3.12 The oil pipe assembly for the test bench should comply with the provisions of JD.T8121. 4.3.13 The standard frequency injector assembly on the test bench should comply with the specifications of JB/T9735. 4.3.14 The oil uniformity of the standard injector assembly on the flow test bench is 6=2%, and the oil uniformity of the standard injector assembly on the discharge station is 8-4%. The uniformity of the flushing is calculated according to formula [6):
210.-200%
.. +g...
Where: 5…Standard leak or oil volume unevenness rate: 2.——Standard injector assembly’s minimum circulating oil supply, mm/cycle: Qmm.Standard injector assembly’s minimum circulating oil supply, m cycles. 4.4 The test oil system and transmission system should be well sealed and should not be leaking. 4.5 The test bench’s operating handles and handles should be easy and convenient to use. The oil connection and readings of the cup should be correct and reliable. 6
4.6 The single-charge voltage between the live circuit of the test bench and the ground should not be less than 1M. All kinds of electrical systems in the test should have anti-interference capabilities, and all kinds of connectors should have good interchangeability. 4.7 Test bench cleanliness limit
The cleanliness limit of the test bench test oil system is 10 00m or more: 800m for hydraulic positioning system, 400mg for gearbox: The maintenance station does not meet this requirement when using the fuel injection pump test bench. 4.8 Thermometer allowable error: at 40T hour 05, 4.9 The allowable error of the digital display transfer meter is 1.5r/min, and the sampling time is 1s: 4.10 The accuracy of the pressure gauge and vacuum gauge on the test bench shall not be less than level 1.5. 4.11 Test bench repeatability
Use the injection sampling that meets the requirements of JB/T9733 to continuously carry out a fuel supply test at 100/min (or 1450/min). The repeatability error of each oil pan count shall not exceed 0.5%, and the number of cycles shall be 1000 times (or 600 times S
4.12 Test bench reliability
JB/T 9734—1999
After the test bench has been running for 300 hours, all elastic performance indicators should meet the requirements of this standard. There should be no oil leakage in the joints of various components, no abnormal wear and peeling on the surfaces of moving parts, and no abnormal damage to the main parts. 4.13 Service life
Under the condition of complying with the operating procedures and maintenance instructions specified by the manufacturer, the service life before the fuel injection test (first overhaul period) is 50uh.
4.4 The test methods of various performance tests of the test bench must be carried out in accordance with the standard T14096. 5 Inspection rules
5.1 Type test bench inspection is divided into two types: type inspection and factory inspection. Type tests should be carried out before the identification of new products and when there are major improvements to the products. When the products leave the factory, each test unit shall be inspected for delivery. 5. Factory inspection items are: 4.2.1, 4.2.4, 42.74.3.1, 4.3.3, 4.3.7, 4.3.J4, 4.4-4.6, 4.125. Type tests include all items in Section 4 of this standard. 5.4 The impact test shall be carried out according to the counting sampling procedure specified in GBT2828, and the defect classification listed in Table 3 and the sampling judgment plan in Table 4 shall be used to check and judge the performance and appearance of the test bench. Table 3 Oil pump test bench defect classification
Test bench transmission system transmission system total report
Equipment live and ground system absolute voltage negative test white running quality ()
Service life ||tt ||Test risk self-average continuous fluctuation
Test bench reduction (reverse value
Period negative odd conversion accuracy change
Test bench Xie Fengshe
Design to achieve the best oil accuracy
Test bench filtration
Test bench operation reliability
Transmission plate distribution time
Test face oil pedal and control boat high opening force vinegar
Tide oil tester
The best cup quality
Discharge of fuel injector assembly
Electric shock protection grounding
Turntable, coupling protection, transmission shaft joint without problem
Gaole oil general rat
Hydraulic transmission weak environment "operation awareness
Packaging improvement appearance quality
Collective workability
JHTT9734—1999
5,4,1 The products that exceed the inspection do not meet the requirements of the standards, product drawings and technical documents: they are all called defects: the degree of influence of the product use is generally divided into minor defects, medium and severe defects are divided into three groups: A, B, and C are defects that have a major impact on the performance of the product and should be strictly controlled; B and C are defects that have a greater impact on the performance of the product, and D is a minor defect that has a slight or few impact on the performance of the product. 5.4.2 Table 4 is a sample of the first time for the main hall. One rubber is determined as the mother of the inspection batch. According to the provisions of Table 4, the number of defects in the sample will not be accepted. If the number of defects in the sample is less than 4c, it will be judged as passed. When the four groups A, 2, C, and D are all passed, they can be judged as qualified. Table 4 Fuel injection pump test bench sample classification table light defects
Defects
By Hua Za
Xiang* mother ||tt ||Number of samples
Qualified products
Ac, Re
6 Marking, packaging, transportation and storage
(5 items for products)
6.1 Each test bench should be marked with a label on a prominent surface, which should indicate: Manufacturer name:
b1 Product model name;
) Factory number:
e) Trademark:
6.2 Packaging| |tt||Excellent Signature Product 8-
(.2.! The unconcentrated external surface of the monitoring platform should have protective measures. Before packing, drain the oil in the oil tank or check it, and put the oil back in the appropriate position of the "operating platform".
6.2.2 The test bench should only be removed from the original special pressure packaging tray and then loaded into the small box with standard materials! The drummer should have measures to mark the total injection nozzle. The finished products should be packed in sealed plastic bags, other accessories, and preparations, etc., after being coated with anti-rust oil, packed with anti-rust packaging, and packed in boxes, and sealed with paper screens or other fillers, and then packed together with the test bench. 6.2.3 The packaging box should be dry and hard: It should be able to ensure that the product will not be damaged or spoiled due to improper packaging under normal storage conditions: JB/T9734—1999
62.4 World Bank test bench issued! "The following documents shall be attached and packed in plastic bags and placed in the box: a) Packing list; b) Product certificate; c) Product instruction manual; 2. The outer surface of the packing box shall be marked with: a) Product name and model; b) Shipping station, manufacturer's name and packing date; e) Receiving station and receiving unit; d) Net weight, gross weight and dimensions (length × width × mm) of the product. Container lifting position:
Transport protection mark,
6.2.6 Transportation and storage
6.2.6.1: The test bench should be protected from mechanical damage, chemical corrosion and adverse effects of atmospheric changes during transportation. 6.26.2 The test bench should be stored in a coal-free warehouse and should not be stored together with acids and other chemicals that can cause corrosion: Under normal storage conditions, the manufacturer should ensure that the product will not rust within three years from the time it leaves the factory.2 The multi-parameter measurement and control test bench should only be removed from the original packaging tray and then packed in a small box with standard materials! The fuel injector assembly should be packed in a sealed plastic bag: other accessories, other accessories, and other accessories should be coated with anti-rust oil, packed with anti-rust materials, packed in a box, and filled with paper screens or other fillings, and then packed with the test bench. 6.2.3 The packaging box should be dry and hard: It should be able to ensure that the product will not be damaged due to improper packaging under normal storage conditions: JB/T9734-1999
62.4 World Bank test bench! "The following documents shall be attached and packed in plastic bags and placed in the box: a) Packing list; b) Product certificate; c) Product instruction manual; 2. The outer surface of the packing box shall be marked with: a) Product name and model; b) Shipping station, manufacturer's name and packing date; e) Receiving station and receiving unit; d) Net weight, gross weight and dimensions (length × width × mm) of the product. Container lifting position:
Transport protection mark,
6.2.6 Transportation and storage
6.2.6.1: The test bench should be protected from mechanical damage, chemical corrosion and adverse effects of atmospheric changes during transportation. 6.26.2 The test bench should be stored in a coal-free warehouse and should not be stored together with acids and other chemicals that can cause corrosion: Under normal storage conditions, the manufacturer should ensure that the product will not rust within three years from the time it leaves the factory.2 The multi-parameter measurement and control test bench should only be removed from the original packaging tray and then packed in a small box with standard materials! The fuel injector assembly should be packed in a sealed plastic bag: other accessories, other accessories, and other accessories should be coated with anti-rust oil, packed with anti-rust materials, packed in a box, and filled with paper screens or other fillings, and then packed with the test bench. 6.2.3 The packaging box should be dry and hard: It should be able to ensure that the product will not be damaged due to improper packaging under normal storage conditions: JB/T9734-1999
62.4 World Bank test bench! "The following documents shall be attached and packed in plastic bags and placed in the box: a) Packing list; b) Product certificate; c) Product instruction manual; 2. The outer surface of the packing box shall be marked with: a) Product name and model; b) Shipping station, manufacturer's name and packing date; e) Receiving station and receiving unit; d) Net weight, gross weight and dimensions (length × width × mm) of the product. Container lifting position:
Transport protection mark,
6.2.6 Transportation and storage
6.2.6.1: The test bench should be protected from mechanical damage, chemical corrosion and adverse effects of atmospheric changes during transportation. 6.26.2 The test bench should be stored in a coal-free warehouse and should not be stored together with acids and other chemicals that can cause corrosion: Under normal storage conditions, the manufacturer should ensure that the product will not rust within three years from the time it leaves the factory.
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