CN101397989B - Engine oil pollution sensitivity testing method for lubricating pump - Google Patents
Engine oil pollution sensitivity testing method for lubricating pump Download PDFInfo
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- CN101397989B CN101397989B CN2008101209521A CN200810120952A CN101397989B CN 101397989 B CN101397989 B CN 101397989B CN 2008101209521 A CN2008101209521 A CN 2008101209521A CN 200810120952 A CN200810120952 A CN 200810120952A CN 101397989 B CN101397989 B CN 101397989B
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Abstract
The invention discloses a method for testing the sensitivity of an oil pump to the oil pollution, which comprises the following steps: making advance-phrase preparation, extracting heated oil from a loop, mixing a fetched mixture into the extracted oil, adding the mixture and the extracted oil into a pollution oil tank of a test stand, running a circulation, opening a valve of a pollution tank, sucking pollution oil in next two circulations, closing the valve of the pollution tank after the end of the circulation, extracting oil from a heating loop, adding a mixture into the extracted oil and then pouring the mixture and the extracted oil into the pollution oil tank; the three steps are repeated for a plurality of times; when designed times are finished, the valve of the pollution oil tank is closed; the oil pump is stopped at the end of a circulation; various parameters are recorded after a real time detection. The method provides a reference for the correct selection of oil pumps and tests and improves the designed oil pumps simultaneously.
Description
Technical field:
The present invention relates to a kind of engine oil pollution sensitivity testing method for lubricating pump.
Background technique:
At present, most mechanical transmission all realizes by hydraulic control system, and the power source of hydraulic control system is exactly an oil pump.Oil pump has determined the performance and the working life of machine driven system to a great extent to the receptance of oil pollution.But up to the present domestic also do not have system the oil pump oil pollution sensitivity is tested, and the characteristic that how to test out the anti-oil pollution sensitivity of oil pump is a difficult problem of industry.
Summary of the invention:
But the purpose of this invention is to provide the engine oil pollution sensitivity testing method for lubricating pump that a kind of system promotes.
For realizing the object of the invention, used technological scheme is: a kind of engine oil pollution sensitivity testing method for lubricating pump, and it may further comprise the steps:
(1) early-stage preparations;
Described early-stage preparations may further comprise the steps:
A, provide variable-frequency motor to drive test stand and oil pump model machine;
B, the element in oil pump pressure limiting loop is carried out dimensional inspection, need the parameter of record to comprise: spool bore diameter, spool bore straightness accuracy, spool bore surface roughness, valve core diameter, groove position, groove depth, spool pilot angle shape and spool face roughness;
C, test stand must refuel to the level that causes mutually with the pasta of oil pump in actual motion;
D, prepare pollutant: hybrid solid pollutant in proportion by weight, the shot of 1 part of 150 μ m～500 μ m iron filings, 1 part of fine sand, 2 parts of SAE crude test dirt and 1 part of 2 μ m～200 μ m is by weight mixing the mixed mixtures that are taken to few 22 grams;
E, connection oil groove oil heater and recycle pump are set control oil temperature;
(2) running test platform, oil is heated to preset temperature after, standby;
When (3) treating that the rotating speed of oil pump gets back to zero in the test stand, from the petcock after the oil filter of heating circuit, extract 3 liters of machine oil through heating;
(4) get 5～7 gram solid mixtures and sneak in 3 liters of machine oil of step (3), again these 3 liters of machine oil are joined in the pollution oil groove of test stand;
(5) oil pump in the running test platform, the oil pump revolution that in 2.5 minutes variable-frequency motor is driven is raised to 5000～5400 from 1000～1400 commentaries on classics to be changeed, in 2.5 minutes, drop to 1000～1400 rotating speeds that change as a circulation again from 5000～5400 commentaries on classics, write down the variation of pressure fuel pump during each loop around test, unusually promptly stop test as oil pressure;
(6) valve of opening pollution groove makes the oil of pollution groove flow into the inlet of oil pump;
(7) oil of 2 liters of band suspended contaminant is inhaled into, pollutes the oil that stays 1 liter of band pollutant in the oil groove;
(8) in last step (7) after subsequently two loop ends, close the valve of pollution groove, keep rotating speed, 2 liters of machine oil of sucking-off from the petcock after the oil filter of heating circuit, and after in oil, adding 3～5 gram solid mixtures, the oil of this band suspended matter is put into the pollution oil groove;
(9) after circulation of work, open the valve between pollution groove and oil pump import;
(10) oil of 2 liters of band suspended contaminant is inhaled into, pollutes the oil that stays 1 liter of band suspended contaminant in the oil groove;
(11) following repetition (9) and (10) step repeat repeatedly;
(12) after the number of repetition that formerly designs to tester, close the valve that pollutes between oil groove and oil pump import, shut down after the circulation that works on;
(13) check pressure-limit valve work whether steadily, whether can close fully and flow whether normal;
(14) oil exchange is become clean machine oil, the operation oil pump sees that the changes in flow rate of machine oil is whether in 5%～10%;
(15) after the shutdown; each part is split out; remeasure each size of pretest inspection; contrast sees whether surpassed the tolerance value of each accessory size; and the oil pump outlet pressure that each cycle period is detected in real time and writes down is compared with the pressure of first circulation time; see variation in pressure whether in the normal variation scope of setting value, reach a conclusion and finish this test.
Described preset temperature is 116 ℃.
Described 5～7 gram mixtures of getting are meant that getting 6 restrains mixtures.
The described oil pump that in 2.5 minutes variable-frequency motor is driven is changeed the rotating speeds that are raised to 5000～5400 commentaries on classics from 1000～1400, in 2.5 minutes, change the rotating speeds that drop to 1000～1400 commentaries on classics again and be meant that the oil pump that in 2.5 minutes variable-frequency motor is driven is raised to 5200 rotating speeds that change from 1200 commentaries on classics, changes the rotating speeds that drop to 1200 commentaries on classics from 5200 again in 2.5 minutes from 5000～5400.
Described 3～5 gram mixtures that add in oil are meant that adding 4 restrains mixtures.
Describedly repeat repeatedly to be meant repetition 5 times.
The test of employing said method, the parameter of the test that obtains comprises that it is the pressure of oil pump outlet that changes in flow rate, the dimensional changes before and after each component test and each cyclic process medium speed of test front and back oil pump machine oil change, and the data before and after the test are analyzed and judge, draw the receptance of oil pump to oil pollution, thereby for selecting correct oil pump that reference is provided, simultaneously the oil pump of designing is verified and improved, and for industry to oil pump to the receptance of oil pollution lay down a criterion may, provide support.
Concrete embodiment:
Below in conjunction with concrete embodiment explanation, but the invention is not restricted to following concrete embodiment:
Embodiment 1:
A kind of engine oil pollution sensitivity testing method for lubricating pump, it may further comprise the steps:
(1) early-stage preparations:
A, provide variable-frequency motor to drive test stand and oil pump model machine, comprise and cooperate frock, output oil pressure modulating valve, oil pressure sensor, but the hydraulic pressure output unit of speed probe, oil temperature sensor and closed loop control, the sampling of oil pump model machine should be detection immediately, and by correlation standard, the oil pump of this test must through the check of relevant departments of enterprise and judge qualified;
B, the element in oil pump pressure limiting loop is carried out dimensional inspection, need the parameter of record to comprise: spool bore diameter, spool bore straightness accuracy, spool bore surface roughness, valve core diameter, groove position, groove depth, spool pilot angle shape and spool face roughness;
C, test stand must refuel to the level that causes mutually with the pasta of oil pump in actual motion;
D, preparation pollutant, the shot 4.6 gram mixing with 150 μ m～500 μ m iron filings, 4.6 grams, fine sand 4.6 grams, SAE crude test dirt 9.2 grams and 2 μ m～200 μ m mix the mixtures of producing 23 grams;
E, connection oil groove oil heater and recycle pump, setting the oily temperature of control is 116 ℃;
(2) running test platform, oil is heated to 116 ℃ after, standby;
When (3) treating that the rotating speed of oil pump gets back to zero in the test stand, from the petcock after the oil filter of test stand heating circuit, extract 3 liters of machine oil through heating;
(4) get 5 gram solid mixtures and sneak in 3 liters of machine oil of step (3), again these 3 liters of machine oil are joined in the pollution oil groove of test stand;
(5) oil pump in the running test platform, the oil pump that in 2.5 minutes variable-frequency motor is driven is changeed the rotating speeds that are raised to 5000 commentaries on classics from 1000, in 2.5 minutes, drop to 1000 rotating speeds that change as a circulation again from 5000 commentaries on classics, write down the variation of pressure fuel pump during each loop around test, unusually promptly stop test as oil pressure, should note first circulation especially, this is the symbol point of pressure limiting thing generation viscous;
(6) valve of opening pollution groove makes the oil of pollution groove flow into the inlet of oil pump;
(7) subsequently and the oil of 2 liters of band pollutants is inhaled into, pollute the oil that stays 1 liter of band pollutant in the oil groove;
(8) in last step (7) after subsequently two loop ends, close the valve of pollution groove, keep rotating speed, 2 liters of machine oil of sucking-off from the petcock after the oil filter of heating circuit, and after in oil, adding 3 gram solid mixtures, the oil of this band suspended contaminant is put into the pollution oil groove;
(9) after circulation of work, open the valve between pollution groove and oil pump import;
(10) oil of 2 liters of band suspended contaminant is inhaled into, pollutes the oil that stays 1 liter of band suspended contaminant in the oil groove;
(11) following repetition (9) and (10) step repeat 5 times;
(12) after the repetition that formerly designs to tester 5 times, close the valve that pollutes between oil groove and oil pump import, shut down after the circulation that works on;
(13) check pressure-limit valve work whether steadily, whether can close fully and flow whether normal;
(14) oil exchange is become clean machine oil, the operation oil pump sees that the changes in flow rate of machine oil is whether in 5%～10%;
(15) after the shutdown; each part is split out; remeasure each size of pretest inspection; contrast sees whether surpassed the tolerance value of each accessory size; and the oil pump outlet pressure that each cycle period is detected in real time and writes down is compared with the pressure of first circulation time; see variation in pressure whether in the normal variation scope of setting value, reach a conclusion and finish this test.
Embodiment 2:
(1) early-stage preparations:
A, provide variable-frequency motor to drive test stand and oil pump model machine, comprise and cooperate frock, output oil pressure modulating valve, oil pressure sensor, but the hydraulic pressure output unit of speed probe, oil temperature sensor and closed loop control, the sampling of oil pump model machine should be detection immediately, and by correlation standard, the oil pump of this test must through the check of relevant departments of enterprise and judge qualified;
B, the element in oil pump pressure limiting loop is carried out dimensional inspection, need the parameter of record to comprise: spool bore diameter, spool bore straightness accuracy, spool bore surface roughness, valve core diameter, groove position, groove depth, spool pilot angle shape and spool face roughness;
C, test stand must refuel to the level that causes mutually with the pasta of oil pump in actual motion;
D, preparation pollutant, the shot 6 gram mixing with 150 μ m～500 μ m iron filings, 6 grams, fine sand 6 grams, SAE crude test dirt 12 grams and 2 μ m～200 μ m mix the mixtures of producing 30 grams;
E, connection oil groove oil heater and recycle pump, setting the oily temperature of control is 116 ℃;
(2) running test platform, oil is heated to 116 ℃ after, standby;
When (3) treating that the rotating speed of oil pump gets back to zero in the test stand, from the petcock after the oil filter of test stand heating circuit, extract 3 liters of machine oil through heating;
(4) get 6 gram solid mixtures and sneak in 3 liters of machine oil of step (3), again these 3 liters of machine oil are joined in the pollution oil groove of test stand;
(5) oil pump in the running test platform, the oil pump that in 2.5 minutes variable-frequency motor is driven is changeed the rotating speeds that are raised to 5200 commentaries on classics from 1200, in 2.5 minutes, drop to 1200 rotating speeds that change as a circulation again from 5200 commentaries on classics, write down the variation of pressure fuel pump during each loop around test, unusually promptly stop test as oil pressure, should note first circulation especially, this is the symbol point of pressure limiting thing generation viscous;
(6) valve of opening pollution groove makes the oil of pollution groove flow into the inlet of oil pump;
(7) oil of 2 liters of band pollutants is inhaled into, pollutes the oil that stays 1 liter of band pollutant in the oil groove;
(8) in last step (7) after subsequently two loop ends, close the valve of pollution groove, keep rotating speed, 2 liters of machine oil of sucking-off from the petcock after the oil filter of heating circuit, and after in oil, adding 4 gram solid mixtures, the oil of this band suspended contaminant is put into the pollution oil groove;
(9) after circulation of work, open the valve between pollution groove and oil pump import;
(10) oil of 2 liters of band suspended contaminant is inhaled into, pollutes the oil that stays 1 liter of band suspended contaminant in the oil groove;
(11) following repetition (9) and (10) step repeat 5 times;
(12) after the repetition that formerly designs to tester 5 times, close the valve that pollutes between oil groove and oil pump import, shut down after the circulation that works on;
(13) check pressure-limit valve work whether steadily, whether can close fully and flow whether normal;
(14) oil exchange is become clean machine oil, the operation oil pump sees that the changes in flow rate of machine oil is whether in 5%～10%;
(15) after the shutdown; each part is split out; remeasure each size of pretest inspection; contrast sees whether surpassed the tolerance value of each accessory size; and the oil pump outlet pressure that each cycle period is detected in real time and writes down is compared with the pressure of first circulation time; see variation in pressure whether in the normal variation scope of setting value, reach a conclusion and finish this test.
Embodiment 3:
(1) early-stage preparations:
A, provide variable-frequency motor to drive test stand and oil pump model machine, comprise and cooperate frock, output oil pressure modulating valve, oil pressure sensor, but the hydraulic pressure output unit of speed probe, oil temperature sensor and closed loop control, the sampling of oil pump model machine should be detection immediately, and by correlation standard, the oil pump of this test must through the check of relevant departments of enterprise and judge qualified;
B, the element in oil pump pressure limiting loop is carried out dimensional inspection, need the parameter of record to comprise: spool bore diameter, spool bore straightness accuracy, spool bore surface roughness, valve core diameter, groove position, groove depth, spool pilot angle shape and spool face roughness;
C, test stand must refuel to the level that causes mutually with the pasta of oil pump in actual motion;
D, preparation pollutant, the shot 7.4 gram mixing with 150 μ m～500 μ m iron filings, 7.4 grams, fine sand 7.4 grams, SAE crude test dirt 14.8 grams and 2 μ m～200 μ m mix the mixtures of producing 37 grams;
E, connection oil groove oil heater and recycle pump, setting the oily temperature of control is 116 ℃;
(2) running test platform, oil is heated to 116 ℃ after, standby;
When (3) treating that the rotating speed of oil pump gets back to zero in the test stand, from the petcock after the oil filter of test stand heating circuit, extract 3 liters of machine oil through heating;
(4) get 7 gram solid mixtures and sneak in 3 liters of machine oil of step (3), again these 3 liters of machine oil are joined in the pollution oil groove of test stand;
(5) oil pump in the running test platform, the oil pump that in 2.5 minutes variable-frequency motor is driven is changeed the rotating speeds that are raised to 5400 commentaries on classics from 1400, in 2.5 minutes, drop to 1400 rotating speeds that change as a circulation again from 5400 commentaries on classics, write down the variation of pressure fuel pump during each loop around test, unusually promptly stop test as oil pressure, should note first circulation especially, this is the symbol point of pressure limiting thing generation viscous;
(6) valve of opening pollution groove makes the oil of pollution groove flow into the inlet of oil pump;
(7) oil of 2 liters of band pollutants is inhaled into, pollutes the oil that stays 1 liter of band pollutant in the oil groove;
(8) in last step (7) after subsequently two loop ends, close the valve of pollution groove, keep rotating speed, 2 liters of machine oil of sucking-off from the petcock after the oil filter of heating circuit, and after in oil, adding 5 gram solid mixtures, the oil of this band suspended contaminant is put into the pollution oil groove;
(9) after circulation of work, open the valve between pollution groove and oil pump import;
(10) oil of 2 liters of band suspended contaminant is inhaled into, pollutes the oil that stays 1 liter of band suspended contaminant in the oil groove;
(11) following repetition (9) and (10) step repeat 5 times;
(12) after the repetition that formerly designs to tester 5 times, close the valve that pollutes between oil groove and oil pump import, shut down after the circulation that works on;
(13) check pressure-limit valve work whether steadily, whether can close fully and flow whether normal;
(14) oil exchange is become clean machine oil, the operation oil pump sees that the changes in flow rate of machine oil is whether in 5%～10%;
(15) after the shutdown; each part is split out; remeasure each size of pretest inspection; contrast sees whether surpassed the tolerance value of each accessory size; and the oil pump outlet pressure that each cycle period is detected in real time and writes down is compared with the pressure of first circulation time; see variation in pressure whether in the normal variation scope of setting value, reach a conclusion and finish this test.
In the process of the test, the situation of checking machine oil pump at any time, as it is unusual abnormal sound, vibration or outlet oil pressure to occur, abort immediately, and check and the damaged condition of record each several part, analyze; After the off-test Test datas such as test report, test program are filed in the lump in order to inquiry.
Claims (6)
1. engine oil pollution sensitivity testing method for lubricating pump, it is characterized in that: it may further comprise the steps:
(1) early-stage preparations;
Described early-stage preparations may further comprise the steps:
A, provide variable-frequency motor to drive test stand and oil pump model machine;
B, the element in oil pump pressure limiting loop is carried out dimensional inspection, need the parameter of record to comprise: spool bore diameter, spool bore straightness accuracy, spool bore surface roughness, valve core diameter, groove position, groove depth, spool pilot angle shape and spool face roughness;
C, test stand must refuel to the level that causes mutually with the pasta of oil pump in actual motion;
D, prepare pollutant: hybrid solid pollutant in proportion by weight, the shot of 1 part of 150 μ m～500 μ m iron filings, 1 part of fine sand, 2 parts of SAE crude test dirt and 1 part of 2 μ m～200 μ m is by weight mixing the mixed mixtures that are taken to few 22 grams;
E, connection oil groove oil heater and recycle pump are set control oil temperature;
(2) running test platform, oil is heated to preset temperature after, standby;
When (3) treating that the rotating speed of oil pump gets back to zero in the test stand, from the petcock after the oil filter of test stand heating circuit, extract 3 liters of machine oil through heating;
(4) get 5～7 gram solid mixtures and sneak in 3 liters of machine oil of step (3), again these 3 liters of machine oil are joined in the pollution oil groove of test stand;
(5) oil pump in the running test platform, the oil pump rotating speed that in 2.5 minutes variable-frequency motor is driven is raised to 5000～5400 from 1000～1400 commentaries on classics to be changeed, in 2.5 minutes, drop to 1000～1400 rotating speeds that change as a circulation again from 5000～5400 commentaries on classics, write down the variation of pressure fuel pump during each loop around test, unusually promptly stop test as oil pressure;
(6) valve of opening pollution groove makes the oil of pollution groove flow into the inlet of oil pump;
(7) oil of 2 liters of band suspended contaminant is inhaled into, pollutes the oil that stays 1 liter of band pollutant in the oil groove;
(8) in last step (7) after subsequently two loop ends, close the valve of pollution groove, keep rotating speed, 2 liters of machine oil of sucking-off from the petcock after the oil filter of heating circuit, and after in oil, adding 3～5 gram solid mixtures, the oil of this band suspended contaminant is put into the pollution oil groove;
(9) after circulation of work, open the valve between pollution groove and oil pump import;
(10) oil of 2 liters of band suspended contaminant is inhaled into, pollutes the oil that stays 1 liter of band suspended contaminant in the oil groove;
(11) following repetition (9) and (10) step repeat repeatedly;
(12) after the number of repetition that formerly designs to tester, close the valve that pollutes between oil groove and oil pump import, shut down after the circulation that works on;
(13) check pressure-limit valve work whether steadily, whether can close fully and flow whether normal;
(14) oil exchange is become clean machine oil, the operation oil pump sees that the changes in flow rate of machine oil is whether in 5%～10%;
(15) after the shutdown; each part is split out; remeasure each size of pretest inspection; contrast sees whether surpassed the tolerance value of each accessory size; and the oil pump outlet pressure that each cycle period is detected in real time and writes down is compared with the pressure of first circulation time; see variation in pressure whether in the normal variation scope of setting value, reach a conclusion and finish this test.
2. engine oil pollution sensitivity testing method for lubricating pump according to claim 1 is characterized in that: described preset temperature is 116 ℃.
3. engine oil pollution sensitivity testing method for lubricating pump according to claim 1 is characterized in that: described 5～7 gram mixtures of getting are meant that getting 6 restrains mixtures.
4. engine oil pollution sensitivity testing method for lubricating pump according to claim 1, it is characterized in that: the described oil pump that in 2.5 minutes variable-frequency motor is driven is changeed the rotating speeds that are raised to 5000～5400 commentaries on classics from 1000～1400, in 2.5 minutes, change the rotating speeds that drop to 1000～1400 commentaries on classics again and be meant that the oil pump that in 2.5 minutes variable-frequency motor is driven is raised to 5200 rotating speeds that change from 1200 commentaries on classics, changes the rotating speeds that drop to 1200 commentaries on classics from 5200 again in 2.5 minutes from 5000～5400.
5. engine oil pollution sensitivity testing method for lubricating pump according to claim 1 is characterized in that: described 3～5 gram mixtures that add in oil are meant that adding 4 restrains mixtures.
6. engine oil pollution sensitivity testing method for lubricating pump according to claim 1 is characterized in that: describedly repeat repeatedly to be meant repetition 5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008101209521A CN101397989B (en) | 2008-09-09 | 2008-09-09 | Engine oil pollution sensitivity testing method for lubricating pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101209521A CN101397989B (en) | 2008-09-09 | 2008-09-09 | Engine oil pollution sensitivity testing method for lubricating pump |
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| CN101397989A CN101397989A (en) | 2009-04-01 |
| CN101397989B true CN101397989B (en) | 2010-06-16 |
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| CN103869056B (en) * | 2012-12-14 | 2015-12-23 | 中航商用航空发动机有限责任公司 | Fuel oil pollution injected system and fuel oil pollution experimental system thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6757630B2 (en) * | 1994-08-19 | 2004-06-29 | Mediq/Prn Life Support Services, Inc. | Integrated systems for testing and certifying the physical, functional, and electrical performance of IV pumps |
| CN1975148A (en) * | 2006-12-14 | 2007-06-06 | 中国船舶重工集团公司第七一一研究所 | Engine common rail fuel combustion system endurance test device and testing method thereof |
| CN101196185A (en) * | 2007-12-20 | 2008-06-11 | 奇瑞汽车有限公司 | Method of testing self-changing gearbox oil pump assembly |
-
2008
- 2008-09-09 CN CN2008101209521A patent/CN101397989B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6757630B2 (en) * | 1994-08-19 | 2004-06-29 | Mediq/Prn Life Support Services, Inc. | Integrated systems for testing and certifying the physical, functional, and electrical performance of IV pumps |
| CN1975148A (en) * | 2006-12-14 | 2007-06-06 | 中国船舶重工集团公司第七一一研究所 | Engine common rail fuel combustion system endurance test device and testing method thereof |
| CN101196185A (en) * | 2007-12-20 | 2008-06-11 | 奇瑞汽车有限公司 | Method of testing self-changing gearbox oil pump assembly |
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Granted publication date: 20100616 |