JB/T 5176-1991 Technical Specifications for Single Plunger Dispensing Pump Assembly JB/T5176-1991 Standard Download Decompression Password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of ChinawwW.bzxz.Net
JB/T5176-1991
Technical Conditions for Single-Plunger Dispensing Pump Assembly
Published on 1991-05-18
Implemented on 1992-01-01
Technical Conditions for Single-Plunger Dispensing Pump Assembly
1 Subject Content and Scope of Application
JB/T5176-1991
This standard specifies the technical requirements, test methods, inspection rules and markings, packaging, transportation, storage, etc. of single-plunger dispensing pump assembly (hereinafter referred to as dispensing pump).
This standard applies to dispensing pumps on cars, small buses, tractors and other high-speed light diesel engines. 2 Reference standards
ZBJ94016
GB8029
GB5770
GB2828
3 Technical requirements
Light diesel oil
Technical conditions for fuel injection pump test bench
Diesel fuel injection pump calibration oil
Technical conditions for plunger fuel injection pump assembly
Count sampling procedures and sampling tables for batch inspection (applicable to inspection of continuous batches)3.1 The parts and components of the distribution pump shall be manufactured according to the product drawings and technical documents approved by the prescribed procedures, and the technical requirements for its assembly shall comply with the provisions of this standard.
3.2 The distribution pump shall use light diesel oil No. 0 or No. 10 specified in GB252. It is allowed to select the appropriate brand of diesel due to changes in the working environment temperature. Under normal filtration conditions, the normal operation of the diesel engine must be ensured. 3.3 The plunger-distribution sleeve, plunger-control sleeve and some parts of the main components of the distribution pump shall not be replaced separately, and other parts and components shall be interchangeable.
3.4 ​​All moving parts of the distribution pump shall move flexibly without any jamming or abnormal noise. 3.5 When the distribution pump is at 150r/min, the oil delivery pressure of the vane oil delivery pump in the pump shall not be less than 0.1MPa. Under other working conditions, the oil delivery pressure shall meet the matching requirements of the engine. 3.6 The limit deviation of the angle between the oil supply starting point of each cylinder of the distribution pump and the specified reference cylinder oil supply starting point should not exceed ±30". 3.7 The oil supply characteristics and automatic advance oil supply characteristics of the distribution pump assembly should be able to meet and adapt to the matching requirements of the main engine respectively. 3.8 The oil supply of the distribution pump under the calibration condition (or maximum torque condition) should be within the range specified in the technical documents. 3.9 The oil stop mechanism of the distribution pump must be flexible and reliable, and must ensure that the engine can be stopped quickly at any time. 3.10 The speed regulating mechanism of the distribution pump should be sensitive and should ensure stable operation of the engine under any working condition. When recovering from the oil cut-off speed specified by the governor to the calibration condition speed, the recovery deviation of the oil supply should not exceed ±3%. The recovery deviation β of the oil supply at the calibration point is calculated as follows: β==αx100% ·
Where: Q is the arithmetic mean of the oil supply of each cylinder at the rated speed before speed increase; Qb is the arithmetic mean of the oil supply of each cylinder when the rated speed is restored. The speed regulation rate of the speed regulator should meet the matching requirements of the main engine. Approved by the Ministry of Machinery and Electronics Industry on May 18, 1991 (1)
Implemented on January 1, 1992
JB/T5176-1991
At the specified oil cut-off speed, the oil supply of each cylinder is allowed to be no more than 0.5mL per 100 times. 3.11
3.12 At the rated speed, the ... The deviation of the average oil supply of each cylinder from the calibration value under the fixed working condition is allowed to be no more than ±2%. The error r is calculated as follows: QQ×100%
Where: Q is the arithmetic mean of the oil supply of each cylinder: Q is the calibration value of the oil supply.
3.13 The unevenness of the oil supply of each cylinder of the distribution pump is no more than ±4% for four cylinders and below, and no more than ±4.5% for six cylinders and above under the calibration working condition (or maximum torque working condition). Under the lowest speed (idling) working condition, it should be no more than ±20%. The unevenness of the oil supply of each cylinder of the distribution pump 6 should be calculated as follows: 8=m(@)-0
2x100%
Wherein: Qmax—the maximum oil supply in each cylinder; Qmin—the minimum oil supply in each cylinder;
Q—the arithmetic mean of the oil supply in each cylinder. 3.14 When the distribution pump is working, there shall be no oil leakage at the sealing points. 3.15 The cleanliness of the distribution pump assembly shall comply with the provisions of relevant standard provisions. 3.16 After the commissioning of the distribution pump is completed, the manufacturer shall seal the appropriate parts of the oil pump with lead. (3)
3.17 When the user complies with the instructions for use of the diesel engine and distribution pump The warranty period of the distribution pump is 12 months from the date of leaving the factory (the cumulative working time shall not exceed 2000 hours) provided that the installation, maintenance and use rules specified in the book and all the lead seals of the distribution pump assembly are kept intact. During the warranty period, if the parts are damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall replace or repair them for the user free of charge. 4 Test method
4.1 Test conditions
4.1.1 The injection pump test bench shall comply with the provisions of ZBJ94016. 4.1.2 The oil used in the injection pump test bench shall comply with the provisions of GB8029. The oil delivery pressure of the test bench shall be 0.02MPa, and the oil temperature shall be controlled within the range of 40±2℃. The test oil temperature is allowed to be determined according to the user's requirements. 4.2 Sealing test of distribution pump
4.2.1 Operation method
On the injection pump test bench, pass the test oil into the distribution pump, then clean and wipe the surface of the pump with gasoline, and operate it for 30 minutes under the calibrated working conditions. During this period, no obvious oil marks that can be observed by touching with fingers are allowed on the seals of the distribution pump. 4.2.2 Air pressure method
Introduce compressed air with a pressure of 0.5MPa at the oil inlet of the distribution pump, and then immerse the pump in the oil pool. There shall be no leakage within 30s.
You may choose any one of the above two methods. 4.3 The angle between the starting point of the oil supply of each cylinder and the starting point of the oil supply of the designated reference cylinder is allowed to be measured by the method in Article 2.2.2 of GB5770 or other methods, but the provisions of Article 3.6 of this standard must be ensured. 4.4 Oil supply characteristic test
Fix the speed control handle at the calibrated working position and the rapid working position respectively, and measure the oil supply characteristics of the distribution pump. Measuring point of oil supply 4.5 Test of uneven oil supply rate of each cylinder
JB/T5176-1991
When conducting the test in Article 4.4, measure the uneven oil supply rate of each cylinder under the calibration condition (or maximum torque condition). The amount of oil collected in each cylinder for each measurement should not be less than 20mL. 4.6 Cleanliness determination
The cleanliness determination method of the distribution pump shall be carried out in accordance with the provisions of the relevant standards. 5 Inspection rules
5.1 Each distribution pump shall be inspected by the quality inspection department of the manufacturer. After passing the inspection, a product certificate shall be issued. 5.2 The ordering unit may randomly inspect the quality of the distribution pump according to the technical requirements of this standard. The acceptance content is generally limited to Articles 3.4, 3.9, 3.10, 3.11, 3.12, 3.13 and 3.14. If other technical requirements need to be inspected, they should be agreed with the manufacturer in advance. 5.3 When the ordering unit conducts random inspection of the distribution pump, the oil pump shall not be disassembled. The acceptance plan shall be agreed upon by the supply and demand parties in accordance with the relevant provisions of GB2828. 6 Marking, packaging, transportation, storage
6.1 Marking
Each distribution pump shall have a nameplate at a prominent position, which shall indicate: a. Manufacturer name and trademark (or factory mark); b. Product model:
c. Direction of rotation;
d. Manufacturing number:
e. Date of manufacture (year, month).
During the warranty period, the marking on the nameplate shall be clearly recognizable. 6.2 Packaging
6.2.1Each distribution pump shall be equipped with various protective parts (shields, protective caps, etc.) to prevent the inner cavity of the oil pump from being contaminated. 6.2.2Each distribution pump shall be treated with anti-corrosion. After packing in plastic film bags, put them into dry and solid packaging boxes with moisture-proof materials to ensure that they will not be damaged during normal transportation. The boxes should be accompanied by: a. Product certificate; b. Product instruction manual; c. Packing list and the specified number of spare parts. 6.2.3 The outer surface of the packaging box should be clearly marked with: a. Manufacturer name and trademark (or factory logo); b. Product name and model: c. Quantity: d. Packing date (year, month); e. Manufacturer address; f. Volume: length × width × height, mm: g. Gross weight (net weight) kg; h. Shipping address and consignee: i. Transport protection mark.
6.2.4 The weight of each box shall not exceed 30kg
JB/T5176-1991
6.2.5 The packaging shall be protected from damage and dirt and shall have conventional signs such as rainproof, moisture-proof, handle with care and do not invert. 6.3 Transportation and storage
6.3.1 The dispensing pump shall not be transported and stored together with acids, alkalis and other chemicals that may cause corrosion of the product, and shall not be damaged or affected by moisture during transportation.
6.3.2 The dispensing pump shall be placed in a dry and ventilated warehouse. Under normal storage conditions, the manufacturer shall ensure that the dispensing pump will not rust within one year from the date of leaving the factory.
Additional Notes:
This standard is proposed and managed by Wuxi Oil Pump and Nozzle Research Institute. This standard was drafted by Wuxi Oil Pump and Nozzle Research Institute, and Shanghai Yichu General Machinery Co., Ltd. was the main participating unit. 66
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