CN103511400A - Device and method for detecting performance of functional valves in oil pump of automatic gearbox - Google Patents
Device and method for detecting performance of functional valves in oil pump of automatic gearbox Download PDFInfo
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- CN103511400A CN103511400A CN201310483273.1A CN201310483273A CN103511400A CN 103511400 A CN103511400 A CN 103511400A CN 201310483273 A CN201310483273 A CN 201310483273A CN 103511400 A CN103511400 A CN 103511400A
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Abstract
The invention discloses a device and method for detecting the performance of functional valves in an oil pump of an automatic gearbox. The device comprises an oil tank (1), a reversing valve (2), a small high-pressure flow valve (3) and a big low-pressure flow valve (4), wherein the oil tank (1) is communicated with the oil pump (5), the oil pump (5) is communicated with an inlet of the reversing valve (2), a high-frequency pressure sensor (6) is arranged between an outlet of the oil pump (5) and an inlet of the reversing valve (2), the high-frequency pressure sensor (6) is electrically connected with an oscilloscope, a first outlet of the reversing valve (2) is communicated with an inlet of the small high-pressure flow valve (3) through a pipeline, and a second outlet of the reversing valve (2) is communicated with an inlet of the big low-pressure flow valve (4) through a pipeline. The method comprises the key steps of collecting response time Ta, the number of periods of waves and recovery time Tb and comparing the collected values with preset values correspondingly. According to the device and method for detecting the performance of the functional valves in the oil pump of the automatic gearbox, the performance of the oil pump (5) can be measured accurately so that the design effect of the functional valves in the oil pump (5) can be controlled accurately.
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 of 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 directly driven by motor.In oil pump for automatic transmission, be provided with a plurality of duty valves as safety valve etc., the selection of the model of above-mentioned functions valve, kind, quantity, rigging position has determined the performance of oil pump for automatic transmission.Prior art lacks the performance that corresponding detection device and detecting method detect each duty valve of oil pump for automatic transmission always, like this, the design effect of each duty valve in oil pump for automatic transmission is also difficult to hold.
Summary of the invention
The technical problem that the present invention will solve is, provide a kind of can Measurement accuracy oil pump performance accurately to hold the device for detecting performance of the duty valve in the oil pump for automatic transmission of the design effect of each duty valve in oil pump.
A technical solution of the present invention is, the device for detecting performance of the duty valve in a kind of oil pump for automatic transmission is provided, 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, between oil pump outlet and selector valve entrance, be provided with high-frequency pressure sensor, high-frequency pressure sensor is electrically connected to an oscillograph, the first outlet of selector valve is communicated with the entrance of high-pressure low-flow valve by the road, the second outlet of selector valve is communicated with the entrance of low pressure and mass flow valve by the road, the outlet of the outlet of high-pressure low-flow valve and low pressure and mass flow valve is communicated with fuel tank through two pipelines respectively.
Another technical problem that the present invention will solve is, provide a kind of can 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.
Another technical solution of the present invention is, the method for testing performance of the duty valve in a kind of oil pump for automatic transmission is provided, and its concrete steps are as follows:
A, 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;
B, continuation operation oil pump, after a period of time, switch selector valve oil pump are communicated with high-pressure low-flow valve, and the outlet pressure of oil pump is stabilized in another fixed value P through several secondary undulations
1upper, fixed value P
1be greater than fixed value P
0, high-frequency pressure sensor gathered each time point oil pump outlet pressure and on oscillograph, form the waveform about force value and time, wherein, the outlet pressure that the time point that starts to increase from the outlet pressure of oil pump plays oil pump reaches fixed value P for the second time
1time point only, the time period between two time points is response time T
a, judgement response time T
awhether be greater than the first alert time T
1, if so, confirm the performance inconsistency lattice of oil pump; If not, from oscillograph, observe, from the outlet pressure of oil pump start to increase play oil pump outlet pressure continually and steadily to fixed value P
1the value of internal pressure during this period of time and the waveform of time only fluctuateed altogether several cycles, then judges whether the number in the cycle of fluctuation is greater than 5, if so, confirms the performance inconsistency lattice of oil pump, if not, enters next step;
C, continuation operation oil pump, after a period of time, switch selector valve oil pump are communicated with low pressure and mass flow valve, and the outlet pressure of oil pump is from fixed value P
1after several secondary undulations, be again stabilized in fixed value P
0on, high-frequency pressure sensor gathered equally each time point oil pump outlet pressure and on oscillograph, form the waveform about force value and time, wherein, the outlet pressure value that the time point that starts to decline from the outlet pressure of oil pump plays oil pump reaches fixed value P for the second time
0time point only, the time period between two time points is T response time
b, judgement T response time
bwhether be greater than the second alert time T
2, if so, confirm the performance inconsistency lattice of oil pump; If not, 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 oil pump each valve body from low pressure operating mode to high pressure operating mode sudden change process fast response time, 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, each valve body that pump is described is during from the cataclysm of high pressure operating mode to low pressure operating mode, and reply speed is fast, and performance is good; By the comparison of above-mentioned three parameters, can Measurement accuracy the performance of each duty valve in oil pump, accurately hold the design effect of each duty valve in oil pump.
As improvement, the first alert time T
1be 0.1～0.3 second, by evidence, the first alert time when this scope value, detect effect comparatively desirable.
As improving again, the first alert time T
1be 0.2 second, by repeated tests, prove, when the first alert time is worth for this, detect effect the most desirable, testing result is the most accurate.
As further improvement, the second alert time T
2be 0.2～0.5 second, by evidence, the second alert time when this scope value, detect effect comparatively desirable.
As improving again, the second alert time T
2be 0.3 second, by repeated tests, prove, when the second alert time is worth for this, detect effect the most desirable, testing result is the most accurate.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the device for detecting performance of the duty valve in oil pump for automatic transmission of the present invention.
Fig. 2 is the waveform about oil pump outlet pressure and time showing on the oscillograph of device for detecting performance of the duty valve in oil pump for automatic transmission of the present invention.
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 Flow-rate adjustment obtained to 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 to relatively large modulating valve, and the pressure of this valve body is naturally relatively low.Fuel tank 1 is communicated with the entrance of the oil pump 5 of automatic transmission case through pipeline, the outlet of oil pump 5 is communicated with selector valve 2 entrances through pipeline, between oil pump 5 outlets and selector valve 2 entrances, be provided with high-frequency pressure sensor 6, high-frequency pressure sensor 6 is electrically connected to an oscillograph, the first outlet of selector valve 2 is communicated with the entrance of high-pressure low-flow valve 3 by the road, the 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 the outlet of high-pressure low-flow valve 3 and low pressure and mass flow valve 4 is communicated with fuel tank 1 through two pipelines respectively.
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:
A, 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.
B, continuation operation oil pump, after 5 a period of times, switch selector valve 2 oil pump 5 are communicated with high-pressure low-flow valve 3, and the outlet pressure of oil pump 5 is stabilized in another fixed value P through several secondary undulations
1upper, fixed value P
1be greater than fixed value P
0high-frequency pressure sensor 6 gathered each time point oil pump 5 outlet pressure and on oscillograph, form the waveform about force value and time, wherein, the outlet pressure that the time point that starts to increase from the outlet pressure of oil pump 5 plays oil pump 5 reaches fixed value P for the second time
1time point only, the time period between two time points is response time T
a, judgement response time T
awhether be greater than the first alert time T
1, if so, confirm the performance inconsistency lattice of oil pump 5; If not, from oscillograph, observe, from the outlet pressure of oil pump 5 start to increase play oil pump 5 outlet pressure continually and steadily to fixed value P
1the value of internal pressure during this period of time and the waveform of time only fluctuateed altogether several cycles, then judges whether the number in the cycle of fluctuation is greater than 5, if so, confirms the performance inconsistency lattice of oil pump 5, if not, enters next step.In this step, the first alert time T
1be 0.1～0.3 second, preferably 0.2 second.
C, continuation operation oil pump, after 5 a period of times, switch selector valve 2 oil pump 5 are communicated with low pressure and mass flow valve 4, and the outlet pressure of oil pump 5 is from fixed value P
1after several secondary undulations, be again stabilized in fixed value P
0on, high-frequency pressure sensor 6 gathered equally each time point oil pump 5 outlet pressure and on oscillograph, form the waveform about force value and time, wherein, the outlet pressure value that the time point that starts to decline from the outlet pressure of oil pump 5 plays oil pump 5 reaches fixed value P for the second time
0time point only, the time period between two time points is T response time
b, judgement T response time
bwhether be greater than the second alert time T
2, if so, confirm the performance inconsistency lattice of oil pump 5; If not, 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 (6)
1. the device for detecting performance of the duty valve in an oil pump for automatic transmission, it is characterized in that: 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 the entrance of oil pump (5) through pipeline, the outlet of oil pump (5) is communicated with the entrance of selector valve (2) through pipeline, between the outlet of oil pump (5) and selector valve (2) entrance, be provided with high-frequency pressure sensor (6), high-frequency pressure sensor (6) is electrically connected to an oscillograph, the first outlet of selector valve (2) is communicated with the entrance of high-pressure low-flow valve (3) through pipeline, the second outlet of selector valve (2) is communicated with the entrance of low pressure and mass flow valve (4) through pipeline, the outlet of the outlet of high-pressure low-flow valve (3) and low pressure and mass flow valve (4) is all communicated with fuel tank (1) through pipeline.
2. 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, 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;
B, continuation operation oil pump, after (5) a period of time, switch selector valve (2) oil pump (5) are communicated with high-pressure low-flow valve (3), and the outlet pressure of oil pump (5) is automatically from fixed value P
0through several secondary undulations, be stabilized in another fixed value P
1upper, fixed value P
1be greater than fixed value P
0high-frequency pressure sensor (6) gathered each time point oil pump (5) outlet pressure and on oscillograph, form the waveform about force value and time, wherein, the outlet pressure that the time point that starts to increase from the outlet pressure of oil pump (5) plays oil pump (5) reaches fixed value P for the second time
1time point only, the time period between two time points is response time T
a, judgement response time T
awhether be greater than predefined the first alert time T
1, if so, confirm the performance inconsistency lattice of oil pump (5); If not, from oscillograph, observe, from the outlet pressure of oil pump (5) start to increase play oil pump (5) outlet pressure continually and steadily to fixed value P
1the value of internal pressure during this period of time and the waveform of time only fluctuateed altogether several cycles, then judges whether the number in the cycle of fluctuation is greater than 5, if so, confirms the performance inconsistency lattice of oil pump (5), if not, enters next step;
C, continuation operation oil pump, after (5) a period of time, switch selector valve (2) oil pump (5) are communicated with low pressure and mass flow valve (4), and the outlet pressure of oil pump (5) is automatically from fixed value P
1after several secondary undulations, be again stabilized in fixed value P
0on, high-frequency pressure sensor (6) gathered equally each time point oil pump (5) outlet pressure and on oscillograph, form the waveform about force value and time, wherein, the outlet pressure value that the time point that starts to decline from the outlet pressure of oil pump (5) plays oil pump (5) reaches fixed value P for the second time
0time point only, the time period between two time points is T response time
b, judgement T response time
bwhether be greater than predefined the second alert time T
2, if so, confirm the performance inconsistency lattice of oil pump (5); If not, confirm that the performance of oil pump (5) is qualified.
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 0.1～0.3 second.
4. the method for testing performance of the duty valve in oil pump for automatic transmission according to claim 3, is characterized in that: the first alert time T
1it is 0.2 second.
5. the method for testing performance of the duty valve in oil pump for automatic transmission according to claim 2, is characterized in that: the second alert time T
2it is 0.2～0.5 second.
6. the method for testing performance of the duty valve in oil pump for automatic transmission according to claim 5, is characterized in that: the second alert time T
2it is 0.3 second.
Priority Applications (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 |
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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| Publication Number | Publication Date |
|---|---|
| CN103511400A true CN103511400A (en) | 2014-01-15 |
| CN103511400B CN103511400B (en) | 2015-12-02 |
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|---|---|---|---|
| CN201310483273.1A Active 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003489A (en) * | 2014-04-17 | 2015-10-28 | 上海汽车集团股份有限公司 | Hydraulic testing device of double-clutch transmission valve body |
| CN109236402A (en) * | 2018-10-29 | 2019-01-18 | 台州吉利罗佑发动机有限公司 | Control method and system for grease pump |
| CN112729810A (en) * | 2021-03-30 | 2021-04-30 | 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 (3)
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| JPH03289530A (en) * | 1990-04-06 | 1991-12-19 | Komatsu Ltd | Apparatus for feeding contaminant mixed oil in hydraulic circuit |
| 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 |
-
2013
- 2013-10-16 CN CN201310483273.1A patent/CN103511400B/en active Active
Patent Citations (3)
| 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 |
| 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 |
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|---|
| 张剑慈等: "流量阀液压试验系统的测试与应用", 《机械研究与应用》, vol. 16, no. 01, 31 March 2003 (2003-03-31) * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003489A (en) * | 2014-04-17 | 2015-10-28 | 上海汽车集团股份有限公司 | Hydraulic testing device of double-clutch transmission valve body |
| CN109236402A (en) * | 2018-10-29 | 2019-01-18 | 台州吉利罗佑发动机有限公司 | Control method and system for grease pump |
| CN112729810A (en) * | 2021-03-30 | 2021-04-30 | 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 |
| 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 |
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| CN103511400B (en) | 2015-12-02 |
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