This standard specifies the technical requirements, test methods and inspection rules for hand-operated fuel injector calibrators. This standard is applicable to the calibrator of the injector assembly or injector assembly with a maximum injection volume of 300mm3/(cycle·cylinder) at full load. JB/T 6293-1992 Technical Conditions for Manual Injector Verifier JB/T6293-1992 Standard download and decompression password: www.bzxz.net

J94 | | tt | | JB | Published
Technical Conditions of the Ministry of Mechanical and Electronic Industry of the People's Republic of China
Implemented on 1993-07-01
Published
Machinery Industry Standards of the People's Republic of China
Hand Press Type fuel injector calibrator
Subject content and scope of application
Technical conditions
JB6293—92
This standard specifies the manual fuel injector calibrator (hereinafter referred to as the calibrator) technical requirements, test methods and inspection rules. This standard is applicable to the calibrator of the injector assembly or injector assembly with a maximum injection volume of 300mm/(cycle·cylinder) at full load. 2 Reference standards
GB252
GB2828
GB3539
GB8029
Light diesel oil
Batch-by-batch inspection and counting sampling procedures and sampling tables (applicable (Inspection of continuous batches) Basic types and technical conditions of high-pressure oil pipe joints for diesel engines Diesel engine injection pump calibration pump oil
Technical conditions of paper filter elements for Diesel engine Diesel-Shantou filters JB/T5240
Verifier structure Principle
3
The structural oil circuit principle of the checker is shown in the figure below. Yan
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Schematic diagram of the structural oil circuit principle of the checkerbzxZ.net
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1—Joystick; 2—Fuel injection; 3—Fuel filter: 4—Fuel tank: 5—Pressure gauge: 6 Variable volume device: 7—Cut-off reading: 8—High-pressure fuel pipe: 9 Tested injector: 10 Technical requirements for oil collection cup 4
4.1 The calibrator should be manufactured in accordance with the product drawings and technical documents approved by the prescribed procedures, and should comply with the provisions of this standard. 4.2 The calibrator oil system should be sealed
4.3 When equipped with a stop valve, the stop valve should be able to cut off the oil path connecting the fuel injection pump to the pressure gauge and variable volume device (if used), and should be sealed.
4.4 The head structure of the high oil pipe joint used shall comply with d in Table 2 of Article 1.2.1 of GB3539. =6mm (or d. =7mm) d=2mm The Ministry of Machinery and Electronics Industry approved the relevant regulations on the implementation of the
1
file on 1993-07-01 on 1992-06-10.
JB6293—92
4.5 The inner wall of the fuel tank should be smooth and treated with anti-corrosion. The structure of the tank cover should ensure ventilation and prevent dirt from entering the tank. 4.6 The paper filter element of the fuel filter should comply with the relevant regulations in JB/T5240. 4.7 The measuring range of the pressure gauge is 0~40MPa or 0~60MPa, and the accuracy level is not less than 1.5. In order to protect the pressure gauge from damage by oil pressure impact during operation, a buffer should be installed in the oil inlet, but the pressure should not be reduced. The response speed of the table. 4.8 The oil outlet of the fuel injection pump has no pressure reducing effect, and the sealing cone surface should be sealed. 4.9 The diameter of the plunger of the fuel injection pump should not be less than 8mm. 4.10 The stroke of the plunger of the fuel injection pump should not be less than 8mm. 4.11 When the stopper is open and the oil outlet is blocked, the hydrodynamic stiffness of the calibrator shall not be less than 0.2MPa/mm control stroke in the pressure range of 5 to 35MPa. 4.12 The nameplate mark of the calibrator shall be Clean off; there should be no bumps, burrs or rust on the processed surface; the surface of the casting should be smooth and there should be no casting defects; the paint surface should not have defects such as peeling off or overflowing. 4.13 The warranty period of the casualty insurance device is 18 months. When the user complies with the relevant provisions in the instruction manual, during the warranty period, if the damage is caused by poor manufacturing quality, the manufacturer shall repair or replace it free of charge. 4.14 The limit life of the calibrator is 10000h5 Test method
5.1 The test oil should comply with the regulations of GB252 or GB8029. Before doing each of the following tests, the oil pressure in the oil system should first be raised to the maximum. When the oil pressure is stopped, if the oil pressure drops, it is allowed to move the joystick multiple times within 30 minutes and repeatedly increase the oil pressure. Pump to the maximum to exhaust all the air entering the test oil. 5.2 Jade sealing test of the injection pump plunger. After the calibration oil system is exhausted, the oil outlet is blocked, and the oil outlet is blocked. Pressurize the pump chamber to 15MP8, and then operate the support slightly at a pumping rate of once every 3 seconds. During this process, the lubricating pressure (within the range of 1535MPa or 1555MPa) must continue to rise and should not remain unchanged or decrease.
5.3 Sealing test of the calibrator oil system. After the calibrator oil system is exhausted, block the oil outlet. With the stop valve open, maximize the hydraulic pump chamber and loosen it. Operate the lever, and then from 35MPa, the pressure gauge reading decreases at a speed not greater than 0.1MPa/min-5.4. The cut-off reading and the sealing test of the outlet valve sealing cone surface are installed at the oil outlet with a reference pressure gauge, and the cut-off reading is closed. , after the calibrator oil system is exhausted, move the joystick several times to pump the oil pressure to the maximum and release the joystick. At this time, there should be no change in the reading value of the pressure gauge, and the falling speed of the reading value of the reference pressure gauge should not be greater than 0.1 MPa/min.
5.5 Fluid Mechanics Stiffness Test
Reading and blocking at the opening cutoff In the case of the oil outlet, load 50N on the joystick handle, record the pressure gauge value pt, and continue loading to 150N. Record the pressure P and also record the vertical distance S fluid that the center of the handle moves downward from 50N to 150N. The mechanical stiffness K is calculated according to formula (1), and its unit is MPa/mmK-Pi-pt
S
6 Inspection Rules
6.1 Type Test
(1)
When the first batch of crystals are produced in a certain batch or cycle during the mass production process, the full performance test of the calibrator should be carried out in accordance with the requirements of Chapter 4
6.2 Factory or delivery acceptance test| |tt||6.2.1 Each calibrator shall be inspected by the quality inspection department of the manufacturer. After passing the inspection, the quality inspection department shall issue a product 2
certificate of conformity. | |tt | Articles 4.2, 4.3, 4.8 and 4.12: If other items in the technical requirements are to be inspected, they should be agreed with the manufacturer in advance. 6.3 Sampling rules
6.3.1 The inspection level shall be in accordance with the general inspection level II specified in GB2828. 6.3.2 The AQL value of the qualified quality level for delivery acceptance and the inspection batch shall be determined through negotiation between the supplier and the buyer. 6.3.3 Sample n shall be determined according to the relevant provisions of GB2828 based on the inspection batch N, inspection level and sample code. In the inspection batch randomly selected.
6.3.4 The sampling plan adopts the one-time normal sleeve sample plan specified in GB2828. According to the sample n and the qualified quality level AQL value, determine the judgment array As, Re]
6.3.5 The batch is qualified or not The judgment of qualification is based on the relevant provisions of Article 4.12 of GB2828. 6.3.6 The sample taking rules for type testing are stipulated by the enterprise standards. 7 Marking, packaging, transportation and purchase and storage
7.1 Mark
Each school There should be a nameplate on a prominent part of the tester, and the nameplate should be marked with: manufacturer name and trademark (or factory logo);
a.
b. Product model;
C. Ex-factory date.
7.2 Packaging
7.2.1 Each calibrator should have protective measures at its outlet to prevent damage to the Shantou pipe joint chain surface or contamination of the inner cavity of the oil pipe. 7.2.2
7.2.3
7.2.4
a.
The outer surface of each calibrator should be treated with rust prevention and packed in plastic bags. After packing. The packaging box should be dry and sturdy, and should be able to protect the product from moisture and damage during transportation. The packaging box should be accompanied by:
Product certificate signed by the manufacturing inspector: Product instruction manual:
b.
c.
7.2.5|| tt||Packing list.
The outside of the packaging box should be marked:
a.
b.
c.
Manufacturer’s name and trademark (or factory logo);|| tt||Product name and model:
Production license number or standard code:
d.
Quantity;
Packing period;
e .
Manufacturing factory address;
f.
Volume: length×width×height, mm;
g.
h.Gross weight (or net weight), kg;
i. Shipping location and receiving unit:
j. Transportation protection marks: "Afraid of getting wet", "Handle with care\" and "Up\" and other conventional signs. 7.3 Transportation and storage
7.3.1 The calibrator should be stored in a dry and ventilated warehouse. Under normal storage, the manufacturer should ensure that the calibrator will not rust within one year from the date of shipment.
7.3.2 The calibrator shall not be mixed with acid, 3
Additional notes:
JB629392
This standard is issued by the Boiler-free Shantou Pump Nozzle Research Institute of the Ministry of Machinery and Electrical Handicrafts. Proposed and centralized. This standard was drafted by the Wuxi Oil Pump and Nozzle Research Institute of the Ministry of Mechanical and Electronic Industry. The main participating unit of this standard is Feng'an Agricultural Machinery Test Equipment Factory.
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