JB/T 8886-1999 Test methods for oil pumps of internal combustion engines
Some standard content:
ICS27.020
Machinery Industry Standard of the People's Republic of China
JB/T8886—1999
Internal combustion engines-Methods of test for lubricating oil pumps1999-09-17 Issued
National Bureau of Machinery Industry
Implementation on 2000-01-01
JBT88R61999
This standard is a revision of J432-86 internal combustion engine oil pump test method: Compared with 432-86, the main technical contents of this standard have been changed as follows: the provisions for reliability test age of lubricating oil pumps and general provisions for type test have been supplemented, and at the same time, necessary requirements have been made for all models. This standard is used in conjunction with BT8413-1996 Technical Conditions for Lubricating Oil of Internal Combustion Engines. This standard replaces NJ432-86 from the date of implementation. This standard is proposed and managed by the National Standardization Technical Committee. The drafting units of this standard are: Shanghai Internal Combustion Engine Research Institute, Chaonan Oil Pump Co., Ltd., Jiangxi Anyu Industry Co., Ltd., Wuxi Huiqi Dongtuan Co., Ltd., Shenyang Fusang Industry Co., Ltd. The original authors of this standard are: Fu Zeming, Xu Xingqiu, Zhou Yan, Ding Bangfeng, Li Chunhua. This standard was first issued in July 1986.
Machinery Industry Standard of the People's Republic of China
Internal Combustion Engine Oil Pump
Test Method
Internal Combustion EnginesMethods af rest for lubricating oil pups1 Scope
JB7F8886-1999
Production N1.2—8
This standard specifies the test items, test conditions, test equipment, performance test specifications and test collection of external involute gear pumps (hereinafter referred to as internal gear pumps) and internal meshing short gear pumps (hereinafter referred to as rotor pumps) and volumetric oil pumps for internal combustion engines (hereinafter referred to as engine pumps). This standard is applicable to the performance test of internal combustion engine oil pumps and other volumetric oil pump assemblies. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in the standard. After this standard is published, the versions shown are effective. All standards are subject to revision. Parties using this standard may use the latest version of the following standards (GB 11122199T
JB/6005—12
JR:T 413—1996
.IR:T 51(51..-1999
3 Definition
This standard adopts the following definition,
Type of oil engine
Internal combustion engine oil system rotor series parameters
From the technical conditions of the internal combustion engine oil pump
Internal combustion engine oil system product performance test
The liquid volume reported by the standard pump in one revolution is calculated based on the technical design data, (.3.2 Oil supply
3.2. Theoretical supply 2
Limited according to the certificate of benefit calculation of the standard system under the given speed light continuous working condition, L and the engine, 3.2. 2 Calibration of oil supply type 2
The oil supply volume of the machine marked on the design drawing at a given output pressure and working speed, plus in 3.2.3 Actual oil supply volume 9
Oil pump 1. On time, the flow output from the outlet of the oil pump in a unit time, referred to as supply oil pad or flow base, in. 3.2.4 Leakage volume 2.
The amount of oil discharged from the overflow hole of the oil system pressure limit, L/mi, 3.3 Oil bottom
3.! Oil suction
Approved by the State Machinery Industry Bureau on September 17, 1999 and implemented on January 02, 2000
JB/T 8886-1999
The suction force of the oil L at the inlet, also known as the suction force, MPa. Output pressure P:
The pressure at the outlet of the pump, MFa
3.3.3 Calibration tank pressure Plb, Psb
Design drawing! The specified oil system suction pressure or output pressure, MPa. The total
system output force and pressure value, MPa. Limit opening pressure
When the limit injection value, P
Limit valve cut-off force P
When the machine is empty, the K is true when the flow is zero, MPa. 3.4 Speed
3.4.1 Nominal speed n
The oil accumulated working speed specified on the design drawing, T/min3.4.2 Actual speed2
The speed actually measured during operation or test (referred to as speed, T/min3.5 Oil suction height
The distance from the surface of the oil pump to the center of the drive wheel (or inner wheel), mm3.6 Power
3.0.1 Mechanical power M
The power of the driving shaft is called mechanical power, axial power, kw, 3.6.2 Power M
The power of the oil pump can be measured by actual The product of the actual oil supply and the pump lift is expressed as: kw.
3.7 Efficiency
3.7.1 Volumetric efficiency
The ratio of the actual oil supply to the theoretical oil supply, that is, 7=0. 3.7.2 Total efficiency
The ratio of the compressed power to the machine power, that is, -N, 3.8 T characteristics
3.8.1 Speed characteristics
When the test oil viscosity and the specified output pressure are specified, it indicates the relationship between the oil supply and the rotational pressure, that is, -3.8.2 Pressure resistance
When the test oil viscosity and the specified speed are specified, it indicates the function relationship between the supply and the output pressure, that is, -3. 8. 3
Combined pressure valve 1. Working characteristics
When the test oil viscosity and the specified idling rate are specified, the relationship between the limit pressure thickening plate pump pressure and the full plate is shown, that is, the one factory (total) 2
3.8.4 Viscosity (or lubrication temperature) characteristics
[B/T8886-1999
When the source speed and the specified pump pressure are specified, the law of the influence of the viscosity (or temperature) of the test oil and the oil supply volume is shown, that is, (=!io-f(r
3.8. Service characteristics
When the test oil viscosity is specified, the full performance of the machine lubrication is within the allowable working speed and pressure range, that is, convex = (jin, k
4 Test items
4. "Outgoing" test
The small factory test refers to the "production quality" test of the product by the manufacturer before it leaves the factory. The test conducted by the quality management department to check the quality of the product, a light requirement) start the oil discharge time;
1 Supply lubrication (including calibration conditions and low stable speed conditions):
! Limited pressure lubrication pressure,
4.2 Type test
Type test refers to the test conducted to fully verify the quality and performance of the product to identify whether the product meets the requirements of B413 and the enterprise standards of related products. Generally, in addition to the factory test, necessary test items can be selected. 4.3 Non-factory test
! Speed characteristics
is a characteristic;
! Limited operation characteristics:
d) Adhesion characteristics;
e General characteristics
4.4 Reliability test,
5 Test conditions
5. 1 Test oil
This standard adopts L-Ece30 diesel engine oil that meets the requirements of GB11122. When the test oil source is 85%±2%, the kinematic viscosity of the oil is (16.5±0.8) m/s. When testing at the factory, it is allowed to use two clean mineral oils at room temperature to make a mixture of oil with a kinematic viscosity of (16.5±0.8) mm/s as the test oil. 5.2 The inner diameter of the suction and discharge pipes should be 1-1.5 times the diameter of the oil inlet and outlet holes. 5.3 Oil suction height
5.3.1 The oil suction height should not be less than 10m.
5.3.2 The oil pump with a filter can be used without the filter flushing the oil tank. 5.4 Equipment and instruments used for testing
The accuracy of the instruments and meters used should meet the requirements of Table 1. 3
Required, meter type
Tachometer
6Test equipment and potential measurement
Pressure gauge
JB/T88B6—1995
Degree gauge
Not less than 1.5°
Rate
C. ± 1.5%
Time
6.The test device shall comply with the requirements of Chapter 5. The test device for oil performance test and flow, speed, length, temperature, power and other measurements is shown in Figure 1.
1 Drive motor: 2-Stationary-rotation measurement; 3 Natural gas pump, 4 Degree meter: 5-Power meter: 6 Control room, 7 Door: 8-Size meter: 9-Oil tank: 10-Heating temperature device: 1 Degree meter: 12-Flow rate: [3-Space length meter: 14 Suction certificate Same as Figure
6.2 Parameter measurement
6. 2. 1 Oil supply
Supply tank and measurement adopt equal volume flow meter. 6.2.2
6.2.2.1 Selection of test points
According to Figure 1, the selection of test points should follow the following three requirements: a) The test points should be located at the oil inlet and outlet of the oil system at 2 times the diameter; the center line of the test hole should be parallel to the flow direction of the filter body; b) The connecting straight length should be greater than or equal to 4 times the inner diameter; c) Due to the size and volume of the oil pump, when a straight pipe 4 times the inner diameter cannot be installed, it is allowed to be led out with an elbow. 6.2.21.2 Test holes and connecting pipes
a) The pressure test hole should be manufactured according to the requirements shown in Figure 2, and its hole diameter should be 2~6m, and the depth of the hole should be greater than 2 times the inner diameter; b) The inner surface of the test hole and the pipe should be smooth, and burrs are not allowed on the edge of the test pipe; c) The pressure gauge and the test table connection system should be tight. 6.2.3 Oil test point a) Thermostat JE/T 8886-1999 The test point should be set at a distance less than or equal to 2 oil outlet diameters from the oil outlet. The thermometer should be installed according to Figure 3. The installation on the variable width channel 6.2.4 Speed measurement The speed can be measured by a tachometer or a digital counter. 6.2.5 Shaft power can be measured by a speed meter or other measurement methods. 7 Performance test specifications General requirements 1.1 Each performance curve should be tested at least six points. 7.1.2 The test points should be evenly distributed on the entire performance curve. 1.3 When measuring data, the readings of all these meters should be read at the same time. 7.2 Lubrication performance test specification In the case of insufficient lubrication, the kinematic viscosity of the test oil should not be higher than 170ms. When the particle pool system is started at a speed of 250T/mlm, the oil leakage hole (the oil outlet of the engine oil source is greater than or equal to 2 times the diameter of the filter pipe) begins to discharge oil. Note the time from starting to the end of oil discharge, which is the starting oil time. 7.3 Speed control
At the specified test oil viscosity and specified discharge pressure, for more than six different speeds including the calibration speed and 10% calibration speed, after running for 30 hours, measure the oil supply, oil temperature, speed, discharge pressure and shaft speed and other related parameters under various working conditions, and make records. 4 [E force characteristics
JE/T8896-1000
At the specified test oil viscosity and calibration speed (variable certain speed), for more than six different pumping pressure including the specified pumping pressure, after running for 30 hours, measure the oil supply, oil temperature, speed, pump pressure and auxiliary power and other related parameters under various conditions, and make records.
7.S Pressure-limited lubrication characteristics
7. 5. 1. Limit pressure opening self-power
7.5.1.1 Limit bottom oil hole opening
At the specified test oil viscosity and the specified speed, gradually load the source, and now the limit oil hole starts to consume oil: record the pump outlet pressure value at this time, which is the limit opening force
7.5.1.2 The limit main oil hole is connected to the oil inlet cavity. At the specified test oil temperature and the specified speed, before the pressure limit opening pressure, carry out the storage test in sections. Take more than 10 different pressures for each test point, and record each pressure after 305! 7.5.2 Pressure limiting valve cut-off pressure
At the specified test oil viscosity and specified speed, add oil drop by drop until the oil volume at the outlet is zero, record the residual pressure value at this time, which is the pressure limiting cut-off pressure. 7.5.3 Pressure limiting valve working characteristics
At the specified test oil viscosity and specified speed, from the beginning of oil overflow from the positive pressure valve, take six different values, run for 30 seconds, measure the oil supply, oil temperature, pressure and other parameters under normal conditions, and record them. 7.6 Viscous characteristics
At the specified speed (or a specified auxiliary speed) and a certain pump output: take more than six different test temperatures, or viscosity, run for 30 seconds, and measure and record the corresponding oil supply plate, oil temperature, pump output, speed and other parameters. 7. Versatility
Under the conditions of variable speed, variable cost and variable temperature, measure the oil supply, pump output force, oil release speed and other related parameters under various conditions, and record the relevant requirements. Before the test, the viscosity-temperature characteristics of the test oil should be prepared in advance. Quantity: Under the condition of less quantity, you can select according to 2, speed 6
Cisuin
", small, ,, and are the conversion values of different speeds respectively
fast n
iYnint
2P, P, P, P, are different output specific force values respectively, and there are engine oils with limited output pressure. The upper and lower limit pressures are
3, write,,, are different oils respectively. 6
7. Carryability test
JE/T 8886-1999
The reliability test method of engine oil products shall be carried out in accordance with the provisions of JB/T51051, or at the same time as the reliability test of internal combustion engines. 7.9 Sealability test
The specified test oil kinematic viscosity (16.5±0.8) mm/s is used for operation. During the test, the pump pressure is adjusted to [50% of the standard pressure, and the duration is 5mm. Check whether there is leakage at the static joint surface. Note: For machines with limited pressure, if the sealability test pressure is higher than the opening pressure limit, the residual pressure will be adjusted to the lower limit during the test. 0.02-0.05MPa
Test results summary
3.1 Performance test parameters, record table, see Table 3. 8.2 Calculation of the test
8.2.1 Oil supply
When using a pressure meter or a stopwatch, calculate according to formula (1): 60G
Wu City: -
Actual oil supply, L/min:
The liquid volume set after the test is cut off,
The time required for a simple measurement of G, 9.
8.2.2 Total pressure connection (21 Calculation:
Where: P-- total pressure, MPa;
, - pump discharge force. MPa
- vertical discharge pressure, MPa,
8.2.3.1 The hydraulic power
can only be adjusted by a relatively continuous torque,
8.2. 3.2 The positive power is calculated by formula (3): p
Where: N-hydraulic power, kw
8. 2. 4 Efficiency 8.2.4.1 The volumetric efficiency is calculated according to formula (4) 2 where: v Volumetric efficiency: — Theoretical shaft capacity: T.imin; (2) Note: The calculation of 2 is in accordance with Appendix A2 of TB4 [3-1996 and Appendix D (series rotor coupons [B6005 [992 units are not specified). 8.2.4.2 The total efficiency is calculated according to formula (5): Where: — Total efficiency. 8.3 Data collection and characteristic curve drawing 8.3.1 Speed characteristics JB/T 8886-1999
The parameters measured in 73 are: 9, speed, etc., and the least square method is used for numerical processing: regression fitting: the result makes the correlation coefficient greater than 0.9. The characteristic curve drawn by the regression equation is shown in Figure 4. The regression equation is according to formula (6):
Where: α, .
One regression coefficient,
Figure 4 Speed characteristics
8.3.2 Force characteristics
The obtained data: 0, the output force shaft speed, etc., are processed by the least square method: fit. The total result makes the relationship between the relationship and the relationship greater than 0.98. The characteristic curve drawn by the regression equation is shown in Figure 5, Figure 6. Regression equation (7) Formula (8):
Where: 4. b, regression coefficient.
8.3.3 Limit opening force
The vertical data measured in 7.5.1.2: with the oil base 2, record the pressure and other values, and divide the limit pressure element into two sections before and after opening, and use the least squares method to process and regress the result. The correlation coefficient should be greater than 0. The characteristics drawn by formula (9) are shown in Figure 6. [2 =a, -4P.
Q, u? +b2P.
In the first part, the topic is the oil supply range of the two sections before and after the pressure limiting valve is opened. L is: , and , are the regression coefficients of the two sections before and after the pressure limiting valve is opened. The pressure limiting working characteristic test is calculated according to the formula (): 8
Me: p
Limited starting pressure MPa
5 Pressure characteristics
8.3.4 Limiting low working characteristics
JB/T88861999
Limited pressure opening
Figure 6 Pressure characteristics [Limited pressure valve]
When the pressure limiting valve acts as a positive valve, the pressure limiting working characteristic test is carried out. Its characteristic curve is shown in Figure 7. The working characteristic of the pressure limiting valve is a curve after the pressure limiting opening point. The leakage is calculated according to formula 11): 2. = 0-0
In the formula: 9-
is the flow rate, 1min;
is the flow rate at unlimited time, mn
0 is the maximum flow rate of the pressure limiting valve and the opening plate, 1min
Figure 7 shows the working characteristic of the pressure limiting valve
8.3.5 Station characteristic
Most of the values measured in 7.6: oil supply, oil temperature? Etc., are processed by the least square method and regression fitting. Its station double row relationship coefficient is -0.981. 9.3.6 General specifications
JB/T8886-1999
: 7.7 Obtained data: oil supply quantity, rotation speed, pump outlet pressure P. and temperature T and other data; according to the temperature tolerance of the test oil, the data processing of the machine pump supply law is carried out: return to the store for calculation. Finally, the relationship is obtained (12): g-ft, tI)
Wherein, w.-kinematic viscosity, mms.
At this time, the correlation coefficient should be greater than 0.997, and the average return value should be less than 5% 1:25
At a certain test oil temperature and oil station, the decompression pressure is the horizontal half mark, the oil supply efficiency is the vertical half mark, and the equal-efficiency and speed characteristics are shown in Figure 9,wwW.bzxz.Net
Figure 8 Viscosity (oil temperature) characteristics
Figure 9 General characteristics
8.3.7 When the test is limited by conditions and cannot meet the predetermined speed, the speed can be calculated using Formula 1 obtained in 8.3.1 and 8.3.2. The increase in the value of the transfer and quality shall not exceed 15% of the test limit value. 8.4 Test report
The acid test report includes the following contents:
Let? Oil system manufacturer, manufacturing period;
b) Oil specifications (including gear or rotor structure number and pressure limit type);
d) Oil pump performance requirements;
d) Relative period, key points:
) Test items (including test oil brand, viscosity, oil absorption, main testing equipment);
h) Test results;
! ) Performance curve:
k) Signatures of the inspection personnel, report editor, and review personnel. 10
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