CN103511400B - The method for testing performance of the duty valve in oil pump for automatic transmission - Google Patents
The method for testing performance of the duty valve in oil pump for automatic transmission Download PDFInfo
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- CN103511400B CN103511400B CN201310483273.1A CN201310483273A CN103511400B CN 103511400 B CN103511400 B CN 103511400B CN 201310483273 A CN201310483273 A CN 201310483273A CN 103511400 B CN103511400 B CN 103511400B
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- oil pump
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Abstract
The invention discloses device for detecting performance and the detecting method of the duty valve in a kind of oil pump for automatic transmission, this device comprises fuel tank (1), selector valve (2), high-pressure low-flow valve (3) and low pressure and mass flow valve (4), fuel tank (1) is communicated with oil pump (5), oil pump (5) is communicated with the entrance of selector valve (2), high-frequency pressure sensor (6) is provided with between the outlet of oil pump (5) and selector valve (2) entrance, high-frequency pressure sensor (6) is electrically connected with an oscillograph, first outlet of selector valve (2) is communicated with through the entrance of pipeline with high-pressure low-flow valve (3), second outlet of selector valve (2) is communicated with through the entrance of pipeline with low pressure and mass flow valve (4), the committed step of the method gathers response time T
a, fluctuation cycle number and response time T
bcompare with setting value.The performance of this apparatus and method energy Measurement accuracy oil pump (5) is accurately to hold the design effect of each duty valve in oil pump (5).
Description
Technical field
The present invention relates to the oil pump for automatic transmission of automobile, is specifically the device for detecting performance of the duty valve in a kind of oil pump for automatic transmission and the detecting method utilizing this device.
Background technique
The oil pump for automatic transmission of vehicle is the power source of the whole hydraulic system of automatic transmission case, and it is generally by motor Direct driver.Be provided with multiple duty valve in oil pump for automatic transmission as safety valve etc., the selection of the model of above-mentioned functions valve, kind, quantity, rigging position determines the performance of oil pump for automatic transmission.Prior art lacks corresponding detection device and detecting method to detect the performance of each duty valve of oil pump for automatic transmission always, like this, is also difficult to hold to the design effect of each duty valve in oil pump for automatic transmission.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of energy Measurement accuracy oil pump performance accurately to hold the method for testing performance of the duty valve in the oil pump for automatic transmission of the design effect of each duty valve in oil pump.
Technical solution of the present invention is, provides the method for testing performance of the duty valve in a kind of oil pump for automatic transmission, and its concrete steps are as follows:
A, manufacture the device for detecting performance of the duty valve in oil pump for automatic transmission, it comprises fuel tank, selector valve, high-pressure low-flow valve and low pressure and mass flow valve, fuel tank is communicated with the entrance of oil pump through pipeline, oil delivery side of pump is communicated with selector valve entrance through pipeline, high-frequency pressure sensor is provided with between fuel pump outlet and selector valve entrance, high-frequency pressure sensor is electrically connected with an oscillograph, first outlet of selector valve is communicated with the entrance of high-pressure low-flow valve by the road, second outlet of selector valve is communicated with the entrance of low pressure and mass flow valve by the road, the outlet of high-pressure low-flow valve is communicated with fuel tank through two pipelines respectively with the outlet of low pressure and mass flow valve,
B, switching selector valve make oil pump be communicated with low pressure and mass flow valve, start operation of oil pump until the outlet pressure of oil pump is stabilized in the fixed value P of
0on;
After c, continuation run oil pump a period of time, switch selector valve and oil pump is communicated with high-pressure low-flow valve, the outlet pressure of oil pump is stabilized in another fixed value P through a few secondary undulation
1on, fixed value P
1be greater than fixed value P
0, high-frequency pressure sensor acquires the outlet pressure of the oil pump of each time point and the waveform formed on oscillograph about force value and time, and wherein, the outlet pressure second time that the time point increased from the outlet pressure of oil pump plays oil pump reaches fixed value P
1time point only, the time period between two time points is response time T
a, judge response time T
awhether be greater than the first alert time T
1, if so, then confirm the performance inconsistency lattice of oil pump; If not, then observe from oscillograph, increase from the outlet pressure of oil pump play oil pump outlet pressure continually and steadily to fixed value P
1the value of internal pressure during this period of time only and the waveform of time have fluctuated altogether several cycle, then judge whether the number in the cycle of fluctuating is greater than 5, if so, then confirms the performance inconsistency lattice of oil pump, if not, then enters next step;
After d, continuation run oil pump a period of time, switch selector valve and oil pump is communicated with low pressure and mass flow valve, the outlet pressure of oil pump is from fixed value P
1again fixed value P is stabilized in after a few secondary undulation
0on, high-frequency pressure sensor acquires the outlet pressure of the oil pump of each time point and the waveform formed on oscillograph about force value and time equally, wherein, the exit pressure levels second time that the time point declined from the outlet pressure of oil pump plays oil pump reaches fixed value P
0time point only, the time period between two time points is T response time
b, judge T response time
bwhether be greater than the second alert time T
2, if so, then confirm the performance inconsistency lattice of oil pump; If not, then confirm that oily pump performance is qualified.
Adopt above method, the device for detecting performance of the duty valve in oil pump for automatic transmission of the present invention and detecting method compared with prior art, have the following advantages:
Response time T
abe not more than the first alert time T
1, can judge fast response time the process of suddenling change from low pressure operating mode to high pressure operating mode of each valve body of oil pump, performance is good; And the number in the cycle of fluctuation is not more than 5, can judge that each valve body of oil pump does not produce new vibrations under high pressure operating mode, the good stability of each valve body; And response time T
bbe no more than the second alert time T
2, when each valve body of pump being described from the cataclysm of high pressure operating mode to low pressure operating mode, speed of replying is fast, and performance is good; By the comparison of above-mentioned three parameters, in energy Measurement accuracy oil pump, the performance of each duty valve, accurately holds the design effect of each duty valve in oil pump.
As improvement, the first alert time T
1be 0.1 ~ 0.3 second, by test prove, the first alert time when this scope value, Detection results is ideal.
As improving again, the first alert time T
1be 0.2 second, proved by repeated tests, when the first alert time is this value, Detection results is the most desirable, and testing result is the most accurate.
As further improvement, the second alert time T
2be 0.2 ~ 0.5 second, by test prove, the second alert time when this scope value, Detection results is ideal.
As improving again, the second alert time T
2be 0.3 second, proved by repeated tests, when the second alert time is this value, Detection results is the most desirable, and testing result is the most accurate.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the device for detecting performance of duty valve in oil pump for automatic transmission of the present invention.
Fig. 2 be the device for detecting performance of duty valve in oil pump for automatic transmission of the present invention oscillograph on show about fuel pump outlet pressure and the waveform of time.
Shown in figure 1, fuel tank, 2, selector valve, 3, high-pressure low-flow valve, 4, low pressure and mass flow valve, 5, oil pump, 6, high-frequency pressure sensor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, the device for detecting performance of the duty valve in oil pump for automatic transmission of the present invention, it comprises fuel tank 1, selector valve 2, high-pressure low-flow valve 3 and low pressure and mass flow valve 4.Described high-pressure low-flow valve 3 refers to and Flow-rate adjustment is obtained relatively little modulating valve, and the pressure of this valve body is naturally relatively high, and low pressure and mass flow valve 4 refers to Flow-rate adjustment is obtained relatively large modulating valve, and the pressure of this valve body is naturally relatively low.Fuel tank 1 is communicated with through the entrance of pipeline with the oil pump 5 of automatic transmission case, the outlet of oil pump 5 is communicated with selector valve 2 entrance through pipeline, oil pump 5 exports and be provided with high-frequency pressure sensor 6 between selector valve 2 entrance, high-frequency pressure sensor 6 is electrically connected with an oscillograph, first outlet of selector valve 2 is communicated with the entrance of high-pressure low-flow valve 3 by the road, second outlet of selector valve 2 is communicated with the entrance of low pressure and mass flow valve 4 by the road, and the outlet of high-pressure low-flow valve 3 is communicated with fuel tank 1 through two pipelines respectively with the outlet of low pressure and mass flow valve 4.
As shown in Figure 1 and Figure 2, the method for testing performance of the duty valve in oil pump for automatic transmission of the present invention, its concrete steps are as follows:
The device for detecting performance of the duty valve in the oil pump for automatic transmission in a, manufacture embodiment described in the second nature section.
B, switching selector valve 2 make oil pump 5 be communicated with low pressure and mass flow valve 4, start oil pump 5 and work until the outlet pressure of oil pump 5 is stabilized in the fixed value P of
0on.
After c, continuation run oil pump 5 a period of time, switch selector valve 2 and oil pump 5 is communicated with high-pressure low-flow valve 3, the outlet pressure of oil pump 5 is stabilized in another fixed value P through a few secondary undulation
1on, fixed value P
1be greater than fixed value P
0high-frequency pressure sensor 6 acquires the outlet pressure of the oil pump 5 of each time point and the waveform formed on oscillograph about force value and time, wherein, the outlet pressure second time that the time point increased from the outlet pressure of oil pump 5 plays oil pump 5 reaches fixed value P
1time point only, the time period between two time points is response time T
a, judge response time T
awhether be greater than the first alert time T
1, if so, then confirm the performance inconsistency lattice of oil pump 5; If not, then observe from oscillograph, increase from the outlet pressure of oil pump 5 play oil pump 5 outlet pressure continually and steadily to fixed value P
1the value of internal pressure during this period of time only and the waveform of time have fluctuated altogether several cycle, then judge whether the number in the cycle of fluctuating is greater than 5, if so, then confirm the performance inconsistency lattice of oil pump 5, if not, then enter next step.In this step, the first alert time T
1be 0.1 ~ 0.3 second, preferably 0.2 second.
After d, continuation run oil pump 5 a period of time, switch selector valve 2 and oil pump 5 is communicated with low pressure and mass flow valve 4, the outlet pressure of oil pump 5 is from fixed value P
1again fixed value P is stabilized in after a few secondary undulation
0on, high-frequency pressure sensor 6 acquires the outlet pressure of the oil pump 5 of each time point and the waveform formed on oscillograph about force value and time equally, wherein, the exit pressure levels second time that the time point declined from the outlet pressure of oil pump 5 plays oil pump 5 reaches fixed value P
0time point only, the time period between two time points is T response time
b, judge T response time
bwhether be greater than the second alert time T
2, if so, then confirm the performance inconsistency lattice of oil pump 5; If not, then confirm that the performance of oil pump 5 is qualified.In this step, the second alert time T
2be 0.2 ~ 0.5 second, preferably 0.3 second.
Claims (5)
1. a method for testing performance for the duty valve in oil pump for automatic transmission, is characterized in that: its step is as follows:
A, manufacture the device for detecting performance of the duty valve in oil pump for automatic transmission, it comprises fuel tank (1), selector valve (2), high-pressure low-flow valve (3) and low pressure and mass flow valve (4), fuel tank (1) is communicated with through the entrance of pipeline with oil pump (5), the outlet of oil pump (5) is communicated with through the entrance of pipeline with selector valve (2), high-frequency pressure sensor (6) is provided with between the outlet of oil pump (5) and selector valve (2) entrance, high-frequency pressure sensor (6) is electrically connected with an oscillograph, first outlet of selector valve (2) is communicated with through the entrance of pipeline with high-pressure low-flow valve (3), second outlet of selector valve (2) is communicated with through the entrance of pipeline with low pressure and mass flow valve (4), the outlet of high-pressure low-flow valve (3) is all communicated with fuel tank (1) through pipeline with the outlet of low pressure and mass flow valve (4),
B, switching selector valve (2) make oil pump (5) be communicated with low pressure and mass flow valve (4), start oil pump (5) work until the outlet pressure of oil pump (5) is stabilized in the fixed value P of
0on;
After c, continuation run oil pump (5) a period of time, switch selector valve (2) and oil pump (5) is communicated with high-pressure low-flow valve (3), then the outlet pressure of oil pump (5) is automatically from fixed value P
0another fixed value P is stabilized in through a few secondary undulation
1on, fixed value P
1be greater than fixed value P
0high-frequency pressure sensor (6) acquires the outlet pressure of the oil pump (5) of each time point and the waveform formed on oscillograph about force value and time, wherein, the outlet pressure second time that the time point increased from the outlet pressure of oil pump (5) plays oil pump (5) reaches fixed value P
1time point only, the time period between two time points is response time T
a, judge response time T
awhether be greater than the first alert time T preset
1, if so, then confirm the performance inconsistency lattice of oil pump (5); If not, then observe from oscillograph, from the outlet pressure of oil pump (5), increase plays the outlet pressure of oil pump (5) continually and steadily to fixed value P
1the value of internal pressure during this period of time only and the waveform of time have fluctuated altogether several cycle, then judge whether the number in the cycle of fluctuating is greater than 5, if so, then confirms the performance inconsistency lattice of oil pump (5), if not, then enters next step;
After d, continuation run oil pump (5) a period of time, switch selector valve (2) and oil pump (5) is communicated with low pressure and mass flow valve (4), then the outlet pressure of oil pump (5) is automatically from fixed value P
1again fixed value P is stabilized in after a few secondary undulation
0on, high-frequency pressure sensor (6) acquires the outlet pressure of the oil pump (5) of each time point and the waveform formed on oscillograph about force value and time equally, wherein, the exit pressure levels second time that the time point declined from the outlet pressure of oil pump (5) plays oil pump (5) reaches fixed value P
0time point only, the time period between two time points is T response time
b, judge T response time
bwhether be greater than the second alert time T preset
2, if so, then confirm the performance inconsistency lattice of oil pump (5); If not, then confirm that the performance of oil pump (5) is qualified.
2. the method for testing performance of the duty valve in oil pump for automatic transmission according to claim 1, is characterized in that: the first alert time T
1it is 0.1 ~ 0.3 second.
3. the method for testing performance of the duty valve in oil pump for automatic transmission according to claim 2, is characterized in that: the first alert time T
1it is 0.2 second.
4. the method for testing performance of the duty valve in oil pump for automatic transmission according to claim 1, is characterized in that: the second alert time T
2it is 0.2 ~ 0.5 second.
5. the method for testing performance of the duty valve in oil pump for automatic transmission according to claim 4, is characterized in that: the second alert time T
2it is 0.3 second.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310483273.1A CN103511400B (en) | 2013-10-16 | 2013-10-16 | The method for testing performance of the duty valve in oil pump for automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310483273.1A CN103511400B (en) | 2013-10-16 | 2013-10-16 | The method for testing performance of the duty valve in oil pump for automatic transmission |
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|---|---|
| CN103511400A CN103511400A (en) | 2014-01-15 |
| CN103511400B true CN103511400B (en) | 2015-12-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105003489B (en) * | 2014-04-17 | 2017-03-08 | 上海汽车集团股份有限公司 | Double clutch gearbox valve body hydraulic pressure testing devices |
| CN109236402B (en) * | 2018-10-29 | 2020-04-24 | 台州滨海吉利发动机有限公司 | Control method and system for lubricating oil pump |
| CN112729810B (en) * | 2021-03-30 | 2021-07-27 | 宁波圣龙智能汽车系统有限公司 | Test assembly, test method and test system for gearbox oil pump and functional valve |
Citations (2)
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|---|---|---|---|---|
| CN201420667Y (en) * | 2009-05-31 | 2010-03-10 | 东华机械有限公司 | Servo hydraulic pump station structure with by-pass unloading |
| CN203548423U (en) * | 2013-10-16 | 2014-04-16 | 宁波圣龙汽车动力系统股份有限公司 | Performance detection device for function valves in automatic transmission box oil pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03289530A (en) * | 1990-04-06 | 1991-12-19 | Komatsu Ltd | Apparatus for feeding contaminant mixed oil in hydraulic circuit |
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2013
- 2013-10-16 CN CN201310483273.1A patent/CN103511400B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201420667Y (en) * | 2009-05-31 | 2010-03-10 | 东华机械有限公司 | Servo hydraulic pump station structure with by-pass unloading |
| CN203548423U (en) * | 2013-10-16 | 2014-04-16 | 宁波圣龙汽车动力系统股份有限公司 | Performance detection device for function valves in automatic transmission box oil pump |
Non-Patent Citations (2)
| Title |
|---|
| 流量阀液压试验系统的测试与应用;张剑慈等;《机械研究与应用》;20030331;第16卷(第01期);全文 * |
| 电液比例阀静动态性能测试系统的研制;沈伟等;《机床与液压》;20050731(第07期);正文第108页第2栏第2行至第109页第2栏第26行 * |
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