CB/T 707.2-2002 Technical Specifications for Fuel Delivery Valve Assemblies of Marine Diesel Engine Injection Pumps CB/T707.2-2002 Standard download decompression password: www.bzxz.net

National Ship Standardization Technical Committee Professional Standard Marine Diesel Engine
Technical Conditions for Fuel Pump Delivery Valve Pairs
This standard applies to the delivery valve pairs of slide valve type fuel injection pumps for medium and large power marine diesel engines. 1 Technical Requirements
1.1 Delivery valve pairs shall comply with the requirements of this standard. 1.2 The delivery valve pairs of the same model shall be interchangeable. CB*107.2—88
Group: 45
Replace CB707-75
1.3 Delivery valve and oil valve seat are generally made of GC-15 (YB9—68) or CrWMn (GB1299—77) steel. The delivery valve can also be made of 18Cr2Ni4WA (YB 6—71) steel. With the consent of the ordering party, the oil outlet valve and the oil outlet valve seat are allowed to be made of other grades of steel: but their physical and mechanical properties shall not be lower than the above corresponding grades of steel. wwW.bzxz.Net
1.4 The oil outlet valve and the oil outlet valve seat shall be heat treated (including cold and aging treatment). 1.4.1 The oil outlet valve and the oil outlet valve seat made of GCr15 or CrWMn steel shall have a hardness of HRC62±21.4.2 The oil outlet valve made of 18Cr2Ni4WA steel shall be carburized, and the depth of the carburized layer shall be 0.40~0.80m; the surface hardness shall not be lower than HRC69,
1.5 Surface finish:
The surface finish of the oil outlet valve and the oil outlet valve seat shall not be lower than ten V9:b. The sealing cone surface of the oil outlet valve and the oil outlet valve seat should not be lower than V9;, and the sealing end surface of the oil confining valve seat should not be lower than 10. 1.6 The roundness of the cylindrical working surface of the oil outlet valve (with unloading flange) and the oil outlet valve seat shall not be greater than 0.001mm. 1.7 The cylindrical working surface of the oil outlet valve seat shall not be greater than 0.002mm. 1.8 The flatness of the sealing end surface of the oil outlet valve seat shall not be greater than 0.0009mm. 1.9 The inclination of the sealing cone surface of the oil outlet valve and the oil outlet valve seat to the cylindrical surface line shall not be greater than 0.003rI. 1.10 The radial clearance between the cylindrical working surface of the oil outlet valve and the oil outlet valve seat is 0.010~(,015mm. 1.11 The oil outlet valve pair with a load-bearing flange has an allowable deviation of +0.1tmm. 1.12 The oil outlet and the oil outlet valve seat should be subjected to magnetic particle inspection, and there should be no cracks, hairline cracks and inclusions. After inspection, retreat. 1.13 The sealing cone surface of the oil outlet valve pair should have good sealing performance. 2 Test method
2.1 The unloading stroke of the oil outlet valve can be inspected by pneumatic measuring on a special measuring tool, and it is also allowed to be guaranteed by dimensional tolerance. 2.2 The sealing test of the sealing surface of the oil outlet valve. 2.2.1 The test should be carried out on an airtight test bench. 2.2.2 The oil outlet valve parts should be washed in filtered light oil, installed in a special fixture, and passed through 4~6kgl/cm (0.39~0.69MFa) compressed air. There should be no leakage within 10 seconds. 2.2.3 During the test, the oil outlet valve must be rotated around its own center line in the oil outlet valve seat to three evenly distributed angle positions, and each position is tested once.
2.2.4 Those that fail the test are allowed to be re-tested after cleaning. National Ship Standardization Technical Committee 1983-.07-11 Issued 1984-05-01 Implementation
CB* 707.2—83
3 Inspection Rules
3.1 The oil outlet valve parts shall be inspected by the technical inspection department of the manufacturer in accordance with the requirements of this standard. 3.2 The shipper has the right to require the quality of the oil outlet valve parts to be sampled and inspected in accordance with this standard. The inspection content is generally Articles 1.10 and 11.13. The number of samples to be sampled shall not exceed 1% of the number of each batch of delivery, but not less than the number of samples. If there are other requirements, they shall be agreed upon by the ordering party and the manufacturer. If the inspection result shows that one pair is unqualified, double the number of the same pair of products shall be sampled for re-inspection. If only one pair is unqualified, it shall not be accepted. , Marking, Packaging, Transportation, Storage
4.1 The oil outlet valve parts shall be marked on the oil outlet valve seat: a. Manufacturer or trademark:
b. Model (diesel engine model can be used for non-standard models); C: manufacturing date (year, month).
4.2 Oil valve parts should be treated with corrosion protection and packaged. If sealed with peelable plastic packaging, the mark on the valve seat should be clearly recognized through the packaging.
4.3 The exported valve parts that have been treated with corrosion protection and packaged shall be packed together with the product certificate signed by the inspector (other sealing rules) into a packaging box with moisture-proof facilities, and the outside of the box shall be marked with:
Product name
Product model (diesel engine model can be used for non-standard models): c.
Quantity in the box:
Manufacturer or trademark:
Packing date (year, month, month);
Transport protection mark.
4.4 During transportation, the oil valve parts shall be protected from mechanical damage and chemical corrosion. 4.5 The oil outlet valve parts should be stored in a warehouse with a shelf and should not be stored with acid, alkali or other items that can cause corrosion. Under normal circumstances, the manufacturer should ensure that no rust will occur within one year from the date of delivery. If there are special requirements, the ordering party shall negotiate with the manufacturer.
Additional Notes:
This standard was proposed by the Diesel Engine Technical Committee and drafted by the 711 Institute. This standard was collectively drafted by the 711 Institute, Nanjing Ocean Shipping Parts Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery and Hongqi Cabin Parts.
Published by China Standard Press, China Standard Publishing House, Du Qinhuang Printing, First Edition, January 1984, First Printing, January 1984, Book Number: 15169·2-54188z:101
National Ship Standardization Technical Committee Professional Standard Marine Diesel Engine
Technical Conditions for Injection Nozzle Parts
This standard is used for closed-end nozzle parts of medium and large semi-engine diesel engines. 1 Technical Requirements
1.1 Injection end parts shall comply with the requirements of this standard. CB* 709.2— 83
Group,
Substitute CB709--75
1.2 Injection parts of the same model and the same flow group shall be interchangeable. 1.3 The needle valve is made of W18CrVA (YB12-77) or W6Mo5Cr4V2 (YH12-77) steel, and the needle body is generally made of 8Cr2NiWA (YB6-71), which can be made of 38CrMo41A (YB6-71). The needle and needle valve body can be made of GCr15 (YB9--) steel. With the consent of the ordering party, the needle and needle body can be made of other grades of steel, but the physical and mechanical properties are not the same as those of the above corresponding grades. 1. The needle valve body should be heat treated (including cooling and auxiliary treatment) 1.4.1 The outer mold of W18Cr4VA and W6M5Cr4V2 materials is made of HRC6212. 1.4.2 The needle valve body made of 18Cr2Ni4WA steel should be carburized. The depth of carburized layer is 0.40~0.8m. The sealing end face and needle valve body should not be less than -0.25mm; the surface hardness should not be less than HRC39, and the sealing end face hardness should not be less than RC56. 1.4.3 Needle valves made of 38CrMAlA steel should be treated with nitrogen, the depth of nitriding layer should not be less than 0.30mm, the surface hardness should not be less than HV850, and the sealing end face hardness should not be less than THV750: the nitriding layer should be the first grade specified in JB2819--8) Metallographic Inspection of Nitrogen Parts.
1.4. The outer body and the outer body are made of GCr15 steel, with a hardness of HRC62±2. 1.5 Surface finish:
, the surface finish of the valve stem of the needle valve and the needle valve is not less than 712; b. The contact zone of the needle valve body sealing surface is not less than V9, c. The contact zone of the needle valve cone sealing surface is not less than V10td. The width of the needle body is not less than 0.0005.
1. The surface finish of the cylindrical surface of the needle valve is not less than 0.0005 mm: The brushing degree of the needle valve working surface shall not exceed 0.003 mm1.7 The cylindricality of the needle valve cylinder working surface shall not exceed 0.013 mm, and the extension of the needle valve cylinder working surface shall not exceed 0.0005 mm.
The true diameter of the cylindrical working surface is only allowed to increase toward the radial surface. 1.8 Flatness of the needle valve sealing end face:
, for end face diameter less than or equal to 4mm, not more than 0.0009mm: b, for end face diameter greater than 4%m, not more than F0.0012㎡. 1.9 The oblique circular runout of the needle valve sealing cone face to the axis of the circular injection surface: for cylinder working surface diameter less than or equal to 10mm, not more than 3.0015mm; for cylinder working surface greater than 10mm, not more than 0.020mm. b.
1.,10 The oblique circular runout of the needle seal cone surface to the measuring note 1 is smaller or equal to F10mm, not more than 0.010m, b. The diameter of the rat column T is larger than 1tm, not more than 0.0015 mm. National Ship Standardization Technical Committee 1983-07-11 issued 198405-01 implementation
CB*709.2--83
, 1.11 The allowable deviation of the needle in the needle reading is: the minimum or equal to 0., inm. For + 0.03 mmb
, the selection is greater than 0., ±0.m
1.12 The needle and the needle body should be sent to the magnetic powder test, and there should be no cracks, cracks and impurities, and the magnetization should be removed after inspection. 1.13 The needle body can move horizontally in the platform, especially in the port environment. 1.14 The nozzle should be tightly sealed. 1.15 The clearance between the cylindrical surface and the design body should meet the requirements in the following table: The clearance between the nozzle and the cylindrical surface ... --0.037
0.n07~3.01u
1.16 The seal of the nozzle is tested by oil pressure. The upper and lower limits of the penetration time of the nozzle seal are determined according to the clearance test specified in Article 1.15. It is allowed to use the test method with the outer diameter of the nozzle to compare the seal of the tested parts. The oil penetration time of the seal of the tested parts should be Within the limit of the standard group column,
Note: The diameter of the valve is the pointer of the design width of the body column. 1.17 The nozzle should meet the following requirements; the fuel should be mist after reading the throat, and there should be no obvious limit, but the effect of splashing and turbidity should be seen, continuity and easy to distinguish. The fuel should not cause sleep phenomenon #
, before and after the beginning and end of the whole process, the leakage should be allowed to avoid the process of wet phenomenon. When the diameter is ten! mm, the liquid should be collected at the same time, but it should not drip. 1.18 The flow record of the separation parts should comply with the requirements of the product drawings. The ratio of the maximum and minimum flow rate to the average separation disk is high, the dripping of the user speed diesel engine should not be more than ten%, the low speed engine should not be more than ten%, and the generation should be improved according to the requirements of the product drawings. 1.19 The cold and liquid passage of the cold-type fuel injection nozzle should be sealed and leak-proof. 2 Test method
2. Fuel nozzle high-end non-motorized test:
The light diesel oil is full of clean gas and lubricating parts. When the part is 45 degrees to the surface, the needle valve is pulled out of the needle valve body by one third of its guide surface length. After it is rotated around the needle axis and placed at any position, it can hit the sliding seat with its body weight, and there shall be no problem phenomenon:
2.2 The requirements for the full entry of the injector test bench are: a. The original force accuracy shall not be less than 1.5 levels;
b. The new connection points of the test bench shall remain sealed. When the test bench is tested with a large lifting force, it should be at a full pressure of 400kgm? (39.23MPa), maintained for 3 liters, and the delivery force shall not exceed 10kgf/cm (.98MPa). 2.3 The sealing test of the nozzle pair during the drop 2
CB* 09.2—83
Under a pressure lower than the specified starting pressure by 2kgf/m* (1.96MPa), within 10s, there shall be no leakage, but a slight amount of wetting is allowed around the spray hole.
2.410 Test of lubricant pair
Adjust the starting agent pressure to the specified value, and check the spray quality by spraying 1 to 2 times of pump oil within 1 second. It is allowed to use the spray quality standard samples of the lubricant pair selected by the ordering party and the manufacturer for comparative testing. 2.5 The two-joint test of Articles 2.3 and 2.4 shall apply the light diesel specified in G252—81 "Light Diesel Oil". It is allowed to use the test fluid specified in Article 2.6.1. 2. The pressure reduction method is used for the sealing test of the nozzle pair. 2.6.1 The viscosity of the test pressure agent is 1.25~1.30"E20. 2.6.2 The flow temperature during the test is 20± 2.6.3 The oil accumulation of the high bed subjected to the pressure reduction effect should remain unchanged. 2.6.4 The starting pressure when measuring the sealing seepage pool should be 20kgf/cm2 (1.96MPa) lower than the specified starting pressure. The pressure drop is 50kgl/cm2 (4.90MPa). The sealing seepage pool time is measured in seconds. 2.6.5 When the test oil is pumped into the needle valve of the nozzle pair, the sealing of the needle valve body sealing end clamp should be ensured, and no oil is allowed to be produced:
2.6.6 It is allowed to use the method of entering from the oil inlet hole of the injector to test the sealing performance of the nozzle pair, but the following requirements must be met: : Tighten the nozzle fixing screw according to the specified torque; h, before each test, several injections must be carried out to exhaust the air:. During the test, the high-pressure sealing parts of the fuel injector and the sealing cone surface of the fuel injector nozzle pair shall not leak. It is allowed to have a slight amount of moisture around the orifice. It is allowed to adjust the fuel injection pressure to 20~3kgf/cm2 (1:96~2.94MPa) higher than the specified value for testing. 2.6.7 When using the standard sample of carbon fuel injector pair sealing for comparative testing, the viscosity of the test fluid and the ambient temperature are not specified, but when the ambient temperature changes by more than 4 degrees, the sample must be recalibrated. 2.7 The coolant channel of the fuel injector pair can be subjected to a pressure resistance test using a light diesel fuel with a pressure of 10kgf/cm (0.98MPa). No leakage shall occur within 3 minutes:
2.8 The flow test of the nozzle pair should be carried out after the inspections in 2.1, 2.3, 2.4 and 2.6. The test method is in accordance with the product drawing. 3 Inspection rules
3.1 The nozzle assembly shall be inspected by the manufacturing company's technical inspection department according to the requirements of this standard. 3.2 When the unit other than the manufacturing company inspects the sealing performance of the nozzle assembly, the sealing performance of the nozzle body and the spray quality, the test bench shall be calibrated with the standard sample provided by the manufacturer. 3.3 The ordering party may require the quality of the nozzle assembly to be sampled and inspected according to this standard. The inspection shall generally be for items 1.13, 1.14, 1.16, 1.17 and 11.18 of this standard. The sampling quantity shall not exceed 1% of the quantity of each batch of delivery, but shall not be limited to four items. If there are other requirements, the ordering party shall agree with the manufacturer that:
If one pair of the cold inspection results is unqualified, double the number of products in the same batch shall be sampled for re-inspection. If there is still one pair of unqualified, it shall not be accepted. 4.1 The nozzle assembly should be marked on the needle valve body: 1. Manufacturer or marking, 2. Model (non-standard model can use diesel commercial model); 3. Flow rate group; 4.2 The nozzle assembly should be clearly identifiable within the service life. 4.2 Spray: The nozzle assembly should be protected and packaged. If it is stored in a peelable plastic package, the marking content of the needle assembly should be clearly identifiable through the package.
CB* T09.2—83
4.8 The spray nozzle parts that have been treated with corrosion protection and packaged shall be packed into a package with anti-corrosion facilities together with the product certificate signed by the inspector and the factory documents (packaging and unsealing rules), and marked on the outside of the box: product name:
product number (for non-standard types, diesel engine type can be used); b.
digital display in the box!
manufacturer or trademark,
packing date (year, month, day)!
transportation warranty mark.
4.4 During transportation, the parts shall be guaranteed to be free from mechanical damage and chemical corrosion. 4.5 The spray nozzle parts shall be stored in a safe warehouse and shall not be stored together with acids, alkalis and other items that can cause corrosion. Under normal storage conditions, the manufacturer shall guarantee that no rust will occur within one year from the date of production. If there are special requirements, the ordering party and the manufacturer shall agree on it.
Additional Notes:
This standard is proposed by the Diesel Engine Technical Committee and is issued by the manufacturer. This standard was first issued by the Nanjing Seventh Institute, Nanjing Ocean Shipping Equipment Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery Factory and Hongqi Ship Parts Factory.
This standard was first issued in 1968 and revised once in 1975. China Standard Industry Press Printing Workshop China Standard Press 2nd Edition 1984 February 1984, ISBN: 13169·2-5416E01~0.102mm. am
True diameter
Diameter
n.0u2-[1.01035
.105 --0.037
0.n07~3.01u
1.16 The seal of the nozzle is tested by oil pressure. The upper and lower limits of the penetration time of the nozzle seal are determined according to the clearance test specified in Article 1.15. It is allowed to use the test method with the outer diameter of the nozzle to compare the seal of the tested parts. The oil penetration time of the seal should be within the limit of the standard. Note: The diameter is the auxiliary work table of the valve body. 1.17 The nozzle should meet the following requirements: the fuel discharged from the nozzle should be atomized, and there should be no obvious splashing, turbidity, continuity and easy to distinguish. The fuel should not cause sleep phenomenon. Before and after the whole process, it should be allowed to seep in, and the mouth should be free of wet phenomenon. When the diameter is 10 mm, there should be liquid collection phenomenon at the mouth, but it should not drip clear. 1.18 The flow record of the separation parts should comply with the requirements of the production drawings. The ratio of the maximum and minimum flow rate to the average separation disk is: for high-speed diesel engines, the dripping rate should not be more than 10%, for low-speed engines, the dripping rate should not be more than 10%, and for pregnant women, it should be divided into: The requirements are as specified in the product drawings. 1.19 The cold and liquid passages of the cold-type fuel injection parts should be sealed and not leak. 2 Test methods
2. The fuel nozzle is not tested:
The clean light diesel oil is filled with the yard and lubricated parts. When the parts are 45 degrees apart from the surface, the needle valve is pulled out of the needle valve body by one-third of its guide surface length, and after being rotated around the needle axis and placed in any sentence, it can be pushed against the sliding seat by its body weight, and there shall be no problem phenomenon:
2.2 The fuel injector test bench is fully loaded with the following requirements: a. The original force accuracy shall not be less than 1.5 levels;
b. The new process connection of the test bench point should remain sealed. When the test bench is tested with a large lifting force, it should be at 400kgm? (39.23MPa) full pressure, maintain 3 liters, the delivery force does not exceed 10kgf/cm2 (.98MPa). 2.3 Test of sealing performance of nozzle pair during operation 2
CB* 09.2—83
Under a pressure lower than the specified opening force by 2kgf/m2* (1.96MPa), within 10s, there shall be no leakage, but a slight amount of moisture is allowed around the spray hole.
2.410 Test of lubricant pair
Adjust the priming agent pressure to the specified value, and check the spray quality by spraying 1 to 2 times of pump oil within 1 second. It is allowed to use the spray quality standard sample of the nozzle pair selected by the ordering party and the manufacturer for comparison test. 2.5 The two-unit test of Articles 2.3 and 2.4 shall apply the light diesel specified in G252—81 "Light Diesel Oil". The test fluid specified in 2.6.1 is allowed to be used. 2. The pressure reduction method is used for the sealing test of the oil nozzle pair. 2.6.1 The viscosity of the test pressure agent is 1.25~1.30"E20. 2.6.2 The flow temperature during the test is 20±2 . 2.6.3 The oil accumulation in the high bed subjected to the pressure reduction effect should remain unchanged. 2.6.4 The starting pressure when measuring the sealing seepage pool should be 20kgf/cm2 (1.96MPa) lower than the specified starting pressure. The pressure drop is 50kgl/em2 (4.90MPa). The sealing seepage pool time is measured in seconds. 2.6.5 When the test oil is pumped into the needle valve of the nozzle assembly, the sealing of the needle valve body sealing end fixture should be ensured, and no oil infiltration is allowed:
2.6.6 It is allowed to use the method of entering from the oil inlet hole of the injector to test the sealing performance of the nozzle assembly, but the following requirements must be met: : Tighten the nozzle fixing screw according to the specified torque; h, before each test, Several fuel injections must be performed to exhaust all the air. During the test, the high-pressure sealing parts of the injector and the sealing cone surface of the injector nozzle assembly must not leak. A slight amount of moisture is allowed around the orifice. The injection pressure is allowed to be adjusted to 20~3kgf/cm2 (1:96~2.94MPa) higher than the specified value for testing. 2.6.7 When using carbon fuel nozzle assembly sealing standard samples for comparative testing, the viscosity of the test fluid and the ambient temperature are not specified, but when the ambient temperature changes by more than 4 degrees, the sample must be recalibrated. 2.7 The coolant channel of the injector nozzle assembly can be subjected to a pressure test using a light diesel fire with a pressure of 10kgf/cm (0.98MPa). No leakage is allowed within 3 minutes. 2.8 Spray i The flow test of the nozzle assembly shall be carried out after the inspection in 2.1, 2.3, 2.4 and 2.6. The test method shall be in accordance with the product drawing. 3 Inspection rules
3.1 The nozzle assembly shall be inspected by the manufacturing! Technical inspection department in accordance with the requirements of this standard. 3.2 When units other than the manufacturer inspect the sealing performance of the lower cone rain, the sealing performance of the sound part and the spray quality of the nozzle assembly, their test bench shall be calibrated with the standard samples provided by the manufacturer. 3.3 The ordering party may require the quality of the nozzle assembly to be sampled in accordance with this standard, and the inspection shall generally be for items 1.13, 1.14, 1.16, 1.17 and 11.18 of this standard. The sampling quantity shall not exceed 1% of the quantity of each batch delivered, but shall not exceed four. There are other requirements The ordering party and the manufacturer agree that:
If one pair of cold test results is unqualified, double the number of products in the same batch should be sampled for re-testing. If there is still one pair of unqualified products, they will not be accepted. 4 Marking, packaging, transportation, storage
4.1 The injection nozzle pair should be marked on the needle valve body 1: 8: manufacturer or marking,
b. model (non-standard model can use diesel commercial model); c. flow group;
d. period (year, year):
Within the period of use, the mark must be clearly recognizable. 4.2 Spray: The nozzle should be protected from pureness and packaged. If it is stored in a peelable plastic package, the marking content of the needle valve body should be clearly recognizable through the packaging.
CB* T09.2—83
4.8 The spray nozzle parts that have been treated with corrosion protection and packaged shall be packed into a package with anti-corrosion facilities together with the product certificate signed by the inspector and the factory documents (packaging and unsealing rules), and marked on the outside of the box: product name:
product number (for non-standard types, diesel engine type can be used); b.
digital display in the box!
manufacturer or trademark,
packing date (year, month, day)!
transportation warranty mark.
4.4 During transportation, the parts shall be guaranteed to be free from mechanical damage and chemical corrosion. 4.5 The spray nozzle parts shall be stored in a safe warehouse and shall not be stored together with acids, alkalis and other items that can cause corrosion. Under normal storage conditions, the manufacturer shall guarantee that no rust will occur within one year from the date of production. If there are special requirements, the ordering party and the manufacturer shall agree on it.
Additional Notes:
This standard is proposed by the Diesel Engine Technical Committee and is issued by the manufacturer. This standard was first issued by the Nanjing Seventh Institute, Nanjing Ocean Shipping Equipment Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery Factory and Hongqi Ship Parts Factory.
This standard was first issued in 1968 and revised once in 1975. China Standard Industry Press Printing Workshop China Standard Press 2nd Edition 1984 February 1984, ISBN: 13169·2-5416E01~0.102mm. am
True diameter
Diameter
n.0u2-[1.01035
.105 --0.037
0.n07~3.01u
1.16 The seal of the nozzle is tested by oil pressure. The upper and lower limits of the penetration time of the nozzle seal are determined according to the clearance test specified in Article 1.15. It is allowed to use the test method with the outer diameter of the nozzle to compare the seal of the tested parts. The oil penetration time of the seal should be within the limit of the standard. Note: The diameter is the auxiliary work table of the valve body. 1.17 The nozzle should meet the following requirements: the fuel discharged from the nozzle should be atomized, and there should be no obvious splashing, turbidity, continuity and easy to distinguish. The fuel should not cause sleep phenomenon. Before and after the whole process, it should be allowed to seep in, and the mouth should be free of wet phenomenon. When the diameter is 10 mm, there should be liquid collection phenomenon at the mouth, but it should not drip clear. 1.18 The flow record of the separation parts should comply with the requirements of the production drawings. The ratio of the maximum and minimum flow rate to the average separation disk is: for high-speed diesel engines, the dripping rate should not be more than 10%, for low-speed engines, the dripping rate should not be more than 10%, and for pregnant women, it should be divided into: The requirements are as specified in the product drawings. 1.19 The cold and liquid passages of the cold-type fuel injection parts should be sealed and not leak. 2 Test methods
2. The fuel nozzle is not tested:
The clean light diesel oil is filled with the yard and lubricated parts. When the parts are 45 degrees apart from the surface, the needle valve is pulled out of the needle valve body by one-third of its guide surface length, and after being rotated around the needle axis and placed in any sentence, it can be pushed against the sliding seat by its body weight, and there shall be no problem phenomenon:
2.2 The fuel injector test bench is fully loaded with the following requirements: a. The original force accuracy shall not be less than 1.5 levels;
b. The new process connection of the test bench point should remain sealed. When the test bench is tested with a large lifting force, it should be at 400kgm? (39.23MPa) full pressure, maintain 3 liters, the delivery force does not exceed 10kgf/cm2 (.98MPa). 2.3 Test of sealing performance of nozzle pair during operation 2
CB* 09.2—83
Under a pressure lower than the specified opening force by 2kgf/m2* (1.96MPa), within 10s, there shall be no leakage, but a slight amount of moisture is allowed around the spray hole.
2.410 Test of lubricant pair
Adjust the priming agent pressure to the specified value, and check the spray quality by spraying 1 to 2 times of pump oil within 1 second. It is allowed to use the spray quality standard sample of the nozzle pair selected by the ordering party and the manufacturer for comparison test. 2.5 The two-unit test of Articles 2.3 and 2.4 shall apply the light diesel specified in G252—81 "Light Diesel Oil". The test fluid specified in 2.6.1 is allowed to be used. 2. The pressure reduction method is used for the sealing test of the oil nozzle pair. 2.6.1 The viscosity of the test pressure agent is 1.25~1.30"E20. 2.6.2 The flow temperature during the test is 20±2 . 2.6.3 The oil accumulation in the high bed subjected to the pressure reduction effect should remain unchanged. 2.6.4 The starting pressure when measuring the sealing seepage pool should be 20kgf/cm2 (1.96MPa) lower than the specified starting pressure. The pressure drop is 50kgl/em2 (4.90MPa). The sealing seepage pool time is measured in seconds. 2.6.5 When the test oil is pumped into the needle valve of the nozzle assembly, the sealing of the needle valve body sealing end fixture should be ensured, and no oil infiltration is allowed:
2.6.6 It is allowed to use the method of entering from the oil inlet hole of the injector to test the sealing performance of the nozzle assembly, but the following requirements must be met: : Tighten the nozzle fixing screw according to the specified torque; h, before each test, Several fuel injections must be performed to exhaust all the air. During the test, the high-pressure sealing parts of the injector and the sealing cone surface of the injector nozzle assembly must not leak. A slight amount of moisture is allowed around the orifice. The injection pressure is allowed to be adjusted to 20~3kgf/cm2 (1:96~2.94MPa) higher than the specified value for testing. 2.6.7 When using carbon fuel nozzle assembly sealing standard samples for comparative testing, the viscosity of the test fluid and the ambient temperature are not specified, but when the ambient temperature changes by more than 4 degrees, the sample must be recalibrated. 2.7 The coolant channel of the injector nozzle assembly can be subjected to a pressure test using a light diesel fire with a pressure of 10kgf/cm (0.98MPa). No leakage is allowed within 3 minutes. 2.8 Spray i The flow test of the nozzle assembly shall be carried out after the inspection in 2.1, 2.3, 2.4 and 2.6. The test method shall be in accordance with the product drawing. 3 Inspection rules
3.1 The nozzle assembly shall be inspected by the manufacturing! Technical inspection department in accordance with the requirements of this standard. 3.2 When units other than the manufacturer inspect the sealing performance of the lower cone rain, the sealing performance of the sound part and the spray quality of the nozzle assembly, their test bench shall be calibrated with the standard samples provided by the manufacturer. 3.3 The ordering party may require the quality of the nozzle assembly to be sampled in accordance with this standard, and the inspection shall generally be for items 1.13, 1.14, 1.16, 1.17 and 11.18 of this standard. The sampling quantity shall not exceed 1% of the quantity of each batch delivered, but shall not exceed four. There are other requirements The ordering party and the manufacturer agree that:
If one pair of cold test results is unqualified, double the number of products in the same batch should be sampled for re-testing. If there is still one pair of unqualified products, they will not be accepted. 4 Marking, packaging, transportation, storage
4.1 The injection nozzle pair should be marked on the needle valve body 1: 8: manufacturer or marking,
b. model (non-standard model can use diesel commercial model); c. flow group;
d. period (year, year):
Within the period of use, the mark must be clearly recognizable. 4.2 Spray: The nozzle should be protected from pureness and packaged. If it is stored in a peelable plastic package, the marking content of the needle valve body should be clearly recognizable through the packaging.
CB* T09.2—83
4.8 The spray nozzle parts that have been treated with corrosion protection and packaged shall be packed into a package with anti-corrosion facilities together with the product certificate signed by the inspector and the factory documents (packaging and unsealing rules), and marked on the outside of the box: product name:
product number (for non-standard types, diesel engine type can be used); b.
digital display in the box!
manufacturer or trademark,
packing date (year, month, day)!
transportation warranty mark.
4.4 During transportation, the parts shall be guaranteed to be free from mechanical damage and chemical corrosion. 4.5 The spray nozzle parts shall be stored in a safe warehouse and shall not be stored together with acids, alkalis and other items that can cause corrosion. Under normal storage conditions, the manufacturer shall guarantee that no rust will occur within one year from the date of production. If there are special requirements, the ordering party and the manufacturer shall agree on it.
Additional Notes:
This standard is proposed by the Diesel Engine Technical Committee and is issued by the manufacturer. This standard was first issued by the Nanjing Seventh Institute, Nanjing Ocean Shipping Equipment Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery Factory and Hongqi Ship Parts Factory.
This standard was first issued in 1968 and revised once in 1975. China Standard Industry Press Printing Workshop China Standard Press 2nd Edition 1984 February 1984, ISBN: 13169·2-5416EThe test of the high-pressure nozzle is not a test:
and the light diesel oil is full of clean and lubricated parts. When the parts are 45 degrees apart from the surface, the needle valve is pulled out of the needle valve body by one-third of its guide surface length, and after it is rotated around the needle axis and placed in any position, it can use its body weight to hit the sliding seat, and there shall be no problem phenomenon:
2.2 The requirements for the full penetration of the injector test bench are: a. The original force accuracy shall not be less than 1.5 levels;
b. The new connection of the test bench point should be kept sealed. When the test bench is tested with a large lifting force, it should be at a full pressure of 400kgm? (39.23MPa), maintain 3 liters, and the delivery force drop shall not exceed 10kgf/cm (.98MPa). 2.3 The sealing test of the nozzle when the nozzle is lowered 2
CB* 09.2—83
Under a pressure lower than the specified starting pressure by 2kgf/m* (1.96MPa), within 10s, there shall be no leakage, but a slight amount of wetting is allowed around the spray hole.
2.410 Test of lubricant pair
Adjust the starting agent pressure to the specified value, and check the spray quality by spraying 1 to 2 times of pump oil within 1 second. It is allowed to use the spray quality standard samples of the lubricant pair selected by the ordering party and the manufacturer for comparative testing. 2.5 The two-joint test of Articles 2.3 and 2.4 shall apply the light diesel specified in G252—81 "Light Diesel Oil". It is allowed to use the test fluid specified in Article 2.6.1. 2. The pressure reduction method is used for the sealing test of the nozzle pair. 2.6.1 The viscosity of the test pressure agent is 1.25~1.30"E20. 2.6.2 The flow temperature during the test is 20± 2.6.3 The oil accumulation of the high bed subjected to the pressure reduction effect should remain unchanged. 2.6.4 The starting pressure when measuring the sealing seepage pool should be 20kgf/cm2 (1.96MPa) lower than the specified starting pressure. The pressure drop is 50kgl/cm2 (4.90MPa). The sealing seepage pool time is measured in seconds. 2.6.5 When the test oil is pumped into the needle valve of the nozzle pair, the sealing of the needle valve body sealing end clamp should be ensured, and no oil is allowed to be produced:
2.6.6 It is allowed to use the method of entering from the oil inlet hole of the injector to test the sealing performance of the nozzle pair, but the following requirements must be met: : Tighten the nozzle fixing screw according to the specified torque; h, before each test, several injections must be carried out to exhaust the air:. During the test, the high-pressure sealing parts of the fuel injector and the sealing cone surface of the fuel injector nozzle pair shall not leak. It is allowed to have a slight amount of moisture around the orifice. It is allowed to adjust the fuel injection pressure to 20~3kgf/cm2 (1:96~2.94MPa) higher than the specified value for testing. 2.6.7 When using the standard sample of carbon fuel injector pair sealing for comparative testing, the viscosity of the test fluid and the ambient temperature are not specified, but when the ambient temperature changes by more than 4 degrees, the sample must be recalibrated. 2.7 The coolant channel of the fuel injector pair can be subjected to a pressure resistance test using a light diesel fuel with a pressure of 10kgf/cm (0.98MPa). No leakage shall occur within 3 minutes:
2.8 The flow test of the nozzle pair should be carried out after the inspections in 2.1, 2.3, 2.4 and 2.6. The test method is in accordance with the product drawing. 3 Inspection rules
3.1 The nozzle assembly shall be inspected by the manufacturing company's technical inspection department according to the requirements of this standard. 3.2 When the unit other than the manufacturing company inspects the sealing performance of the nozzle assembly, the sealing performance of the nozzle body and the spray quality, the test bench shall be calibrated with the standard sample provided by the manufacturer. 3.3 The ordering party may require the quality of the nozzle assembly to be sampled and inspected according to this standard. The inspection shall generally be for items 1.13, 1.14, 1.16, 1.17 and 11.18 of this standard. The sampling quantity shall not exceed 1% of the quantity of each batch of delivery, but shall not be limited to four items. If there are other requirements, the ordering party shall agree with the manufacturer that:
If one pair of the cold inspection results is unqualified, double the number of products in the same batch shall be sampled for re-inspection. If there is still one pair of unqualified, it shall not be accepted. 4.1 The nozzle assembly should be marked on the needle valve body: 1. Manufacturer or marking, 2. Model (non-standard model can use diesel commercial model); 3. Flow rate group; 4.2 The nozzle assembly should be clearly identifiable within the service life. 4.2 Spray: The nozzle assembly should be protected and packaged. If it is stored in a peelable plastic package, the marking content of the needle assembly should be clearly identifiable through the package.
CB* T09.2—83
4.8 The spray nozzle parts that have been treated with corrosion protection and packaged shall be packed into a package with anti-corrosion facilities together with the product certificate signed by the inspector and the factory documents (packaging and unsealing rules), and marked on the outside of the box: product name:
product number (for non-standard types, diesel engine type can be used); b.
digital display in the box!
manufacturer or trademark,
packing date (year, month, day)!
transportation warranty mark.
4.4 During transportation, the parts shall be guaranteed to be free from mechanical damage and chemical corrosion. 4.5 The spray nozzle parts shall be stored in a safe warehouse and shall not be stored together with acids, alkalis and other items that can cause corrosion. Under normal storage conditions, the manufacturer shall guarantee that no rust will occur within one year from the date of production. If there are special requirements, the ordering party and the manufacturer shall agree on it.
Additional Notes:
This standard is proposed by the Diesel Engine Technical Committee and is issued by the manufacturer. This standard was first issued by the Nanjing Seventh Institute, Nanjing Ocean Shipping Equipment Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery Factory and Hongqi Ship Parts Factory.
This standard was first issued in 1968 and revised once in 1975. China Standard Industry Press Printing Workshop China Standard Press 2nd Edition 1984 February 1984, ISBN: 13169·2-5416EThe test of the high-pressure nozzle is not a test:
and the light diesel oil is full of clean and lubricated parts. When the parts are 45 degrees apart from the surface, the needle valve is pulled out of the needle valve body by one-third of its guide surface length, and after it is rotated around the needle axis and placed in any position, it can use its body weight to hit the sliding seat, and there shall be no problem phenomenon:
2.2 The requirements for the full penetration of the injector test bench are: a. The original force accuracy shall not be less than 1.5 levels;
b. The new connection of the test bench point should be kept sealed. When the test bench is tested with a large lifting force, it should be at a full pressure of 400kgm? (39.23MPa), maintain 3 liters, and the delivery force drop shall not exceed 10kgf/cm (.98MPa). 2.3 The sealing test of the nozzle when the nozzle is lowered 2
CB* 09.2—83
Under a pressure lower than the specified starting pressure by 2kgf/m* (1.96MPa), within 10s, there shall be no leakage, but a slight amount of wetting is allowed around the spray hole.
2.410 Test of lubricant pair
Adjust the starting agent pressure to the specified value, and check the spray quality by spraying 1 to 2 times of pump oil within 1 second. It is allowed to use the spray quality standard samples of the lubricant pair selected by the ordering party and the manufacturer for comparative testing. 2.5 The two-joint test of Articles 2.3 and 2.4 shall apply the light diesel specified in G252—81 "Light Diesel Oil". It is allowed to use the test fluid specified in Article 2.6.1. 2. The pressure reduction method is used for the sealing test of the nozzle pair. 2.6.1 The viscosity of the test pressure agent is 1.25~1.30"E20. 2.6.2 The flow temperature during the test is 20± 2.6.3 The oil accumulation of the high bed subjected to the pressure reduction effect should remain unchanged. 2.6.4 The starting pressure when measuring the sealing seepage pool should be 20kgf/cm2 (1.96MPa) lower than the specified starting pressure. The pressure drop is 50kgl/cm2 (4.90MPa). The sealing seepage pool time is measured in seconds. 2.6.5 When the test oil is pumped into the needle valve of the nozzle pair, the sealing of the needle valve body sealing end clamp should be ensured, and no oil is allowed to be produced:
2.6.6 It is allowed to use the method of entering from the oil inlet hole of the injector to test the sealing performance of the nozzle pair, but the following requirements must be met: : Tighten the nozzle fixing screw according to the specified torque; h, before each test, several injections must be carried out to exhaust the air:. During the test, the high-pressure sealing parts of the fuel injector and the sealing cone surface of the fuel injector nozzle pair shall not leak. It is allowed to have a slight amount of moisture around the orifice. It is allowed to adjust the fuel injection pressure to 20~3kgf/cm2 (1:96~2.94MPa) higher than the specified value for testing. 2.6.7 When using the standard sample of carbon fuel injector pair sealing for comparative testing, the viscosity of the test fluid and the ambient temperature are not specified, but when the ambient temperature changes by more than 4 degrees, the sample must be recalibrated. 2.7 The coolant channel of the fuel injector pair can be subjected to a pressure resistance test using a light diesel fuel with a pressure of 10kgf/cm (0.98MPa). No leakage shall occur within 3 minutes:
2.8 The flow test of the nozzle pair should be carried out after the inspections in 2.1, 2.3, 2.4 and 2.6. The test method is in accordance with the product drawing. 3 Inspection rules
3.1 The nozzle assembly shall be inspected by the manufacturing company's technical inspection department according to the requirements of this standard. 3.2 When the unit other than the manufacturing company inspects the sealing performance of the nozzle assembly, the sealing performance of the nozzle body and the spray quality, the test bench shall be calibrated with the standard sample provided by the manufacturer. 3.3 The ordering party may require the quality of the nozzle assembly to be sampled and inspected according to this standard. The inspection shall generally be for items 1.13, 1.14, 1.16, 1.17 and 11.18 of this standard. The sampling quantity shall not exceed 1% of the quantity of each batch of delivery, but shall not be limited to four items. If there are other requirements, the ordering party shall agree with the manufacturer that:
If one pair of the cold inspection results is unqualified, double the number of products in the same batch shall be sampled for re-inspection. If there is still one pair of unqualified, it shall not be accepted. 4.1 The nozzle assembly should be marked on the needle valve body: 1. Manufacturer or marking, 2. Model (non-standard model can use diesel commercial model); 3. Flow rate group; 4.2 The nozzle assembly should be clearly identifiable within the service life. 4.2 Spray: The nozzle assembly should be protected and packaged. If it is stored in a peelable plastic package, the marking content of the needle assembly should be clearly identifiable through the package.
CB* T09.2—83
4.8 The spray nozzle parts that have been treated with corrosion protection and packaged shall be packed into a package with anti-corrosion facilities together with the product certificate signed by the inspector and the factory documents (packaging and unsealing rules), and marked on the outside of the box: product name:
product number (for non-standard types, diesel engine type can be used); b.
digital display in the box!
manufacturer or trademark,
packing date (year, month, day)!
transportation warranty mark.
4.4 During transportation, the parts shall be guaranteed to be free from mechanical damage and chemical corrosion. 4.5 The spray nozzle parts shall be stored in a safe warehouse and shall not be stored together with acids, alkalis and other items that can cause corrosion. Under normal storage conditions, the manufacturer shall guarantee that no rust will occur within one year from the date of production. If there are special requirements, the ordering party and the manufacturer shall agree on it.
Additional Notes:
This standard is proposed by the Diesel Engine Technical Committee and is issued by the manufacturer. This standard was first issued by the Nanjing Seventh Institute, Nanjing Ocean Shipping Equipment Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery Factory and Hongqi Ship Parts Factory.
This standard was first issued in 1968 and revised once in 1975. China Standard Industry Press Printing Workshop China Standard Press 2nd Edition 1984 February 1984, ISBN: 13169·2-5416E1. The nozzle assembly shall be inspected by the manufacturing technical inspection department according to the requirements of this standard. 3.2 When the unit other than the manufacturer inspects the sealing performance of the nozzle lower parts, the sealing performance of the nozzle lower parts and the spray quality, the test bench shall be calibrated with the standard sample provided by the manufacturer. 3.3 The ordering party may require the quality of the nozzle assembly to be sampled and inspected according to this standard. The inspection shall generally be for items 1.13, 1.14, 1.16, 1.17 and 11.18 of this standard. The sampling quantity shall not exceed 1% of the quantity of each batch of delivery, but shall not exceed 4 items. If there are other requirements, the ordering party shall agree with the manufacturer that:
If one pair of the cold inspection results is unqualified, double the number of products in the same batch shall be sampled for re-inspection. If there is still one pair of unqualified, it shall not be accepted. 4.1 The nozzle assembly should be marked on the needle valve body: 1. Manufacturer or marking, 2. Model (non-standard model can use diesel commercial model); 3. Flow rate group; 4.2 The nozzle assembly should be clearly identifiable within the service life. 4.2 Spray: The nozzle assembly should be protected and packaged. If it is stored in a peelable plastic package, the marking content of the needle assembly should be clearly identifiable through the package.
CB* T09.2—83
4.8 The spray nozzle parts that have been treated with corrosion protection and packaged shall be packed into a package with anti-corrosion facilities together with the product certificate signed by the inspector and the factory documents (packaging and unsealing rules), and marked on the outside of the box: product name:
product number (for non-standard types, diesel engine type can be used); b.
digital display in the box!
manufacturer or trademark,
packing date (year, month, day)!
transportation warranty mark.
4.4 During transportation, the parts shall be guaranteed to be free from mechanical damage and chemical corrosion. 4.5 The spray nozzle parts shall be stored in a safe warehouse and shall not be stored together with acids, alkalis and other items that can cause corrosion. Under normal storage conditions, the manufacturer shall guarantee that no rust will occur within one year from the date of production. If there are special requirements, the ordering party and the manufacturer shall agree on it.
Additional Notes:
This standard is proposed by the Diesel Engine Technical Committee and is issued by the manufacturer. This standard was first issued by the Nanjing Seventh Institute, Nanjing Ocean Shipping Equipment Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery Factory and Hongqi Ship Parts Factory.
This standard was first issued in 1968 and revised once in 1975. China Standard Industry Press Printing Workshop China Standard Press 2nd Edition 1984 February 1984, ISBN: 13169·2-5416E1. The nozzle assembly shall be inspected by the manufacturing technical inspection department according to the requirements of this standard. 3.2 When the unit other than the manufacturer inspects the sealing performance of the nozzle assembly, the sealing performance of the nozzle body and the spray quality, the test bench shall be calibrated with the standard sample provided by the manufacturer. 3.3 The ordering party may require the quality of the nozzle assembly to be sampled and inspected according to this standard. The inspection shall generally be for items 1.13, 1.14, 1.16, 1.17 and 11.18 of this standard. The sampling quantity shall not exceed 1% of the quantity of each batch of delivery, but shall not exceed 4 items. If there are other requirements, the ordering party shall agree with the manufacturer that:
If one pair of the cold inspection results is unqualified, double the number of products in the same batch shall be sampled for re-inspection. If there is still one pair of unqualified, it shall not be accepted. 4.1 The nozzle assembly should be marked on the needle valve body: 1. Manufacturer or marking, 2. Model (non-standard model can use diesel commercial model); 3. Flow rate group; 4.2 The nozzle assembly should be clearly identifiable within the service life. 4.2 Spray: The nozzle assembly should be protected and packaged. If it is stored in a peelable plastic package, the marking content of the needle assembly should be clearly identifiable through the package.
CB* T09.2—83
4.8 The spray nozzle parts that have been treated with corrosion protection and packaged shall be packed into a package with anti-corrosion facilities together with the product certificate signed by the inspector and the factory documents (packaging and unsealing rules), and marked on the outside of the box: product name:
product number (for non-standard types, diesel engine type can be used); b.
digital display in the box!
manufacturer or trademark,
packing date (year, month, day)!
transportation warranty mark.
4.4 During transportation, the parts shall be guaranteed to be free from mechanical damage and chemical corrosion. 4.5 The spray nozzle parts shall be stored in a safe warehouse and shall not be stored together with acids, alkalis and other items that can cause corrosion. Under normal storage conditions, the manufacturer shall guarantee that no rust will occur within one year from the date of production. If there are special requirements, the ordering party and the manufacturer shall agree on it.
Additional Notes:
This standard is proposed by the Diesel Engine Technical Committee and is issued by the manufacturer. This standard was first issued by the Nanjing Seventh Institute, Nanjing Ocean Shipping Equipment Manufacturing Factory, Shaanxi Diesel Engine Factory, Hongjiang Machinery Factory and Hongqi Ship Parts Factory.
This standard was first issued in 1968 and revised once in 1975. China Standard Industry Press Printing Workshop China Standard Press 2nd Edition 1984 February 1984, ISBN: 13169·2-5416E
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.