CN109826687A - A kind of lubricating oil temperature control system and method for engine rig test - Google Patents
A kind of lubricating oil temperature control system and method for engine rig test Download PDFInfo
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- CN109826687A CN109826687A CN201910277748.9A CN201910277748A CN109826687A CN 109826687 A CN109826687 A CN 109826687A CN 201910277748 A CN201910277748 A CN 201910277748A CN 109826687 A CN109826687 A CN 109826687A
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 93
- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003921 oil Substances 0.000 claims abstract description 128
- 238000001514 detection method Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 230000001276 controlling effect Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000010721 machine oil Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The present invention relates to lubricating oil detection fields, disclose a kind of lubricating oil temperature control system for engine rig test, including engine, heat-exchanger rig, temperature measuring device and control device, engine includes oil filter, oil cooler and working connection, wherein oil filter is directly connected to working connection, to be shorted oil cooler, lubricating oil is enable to be directly entered working connection through oil filter；Heat-exchanger rig setting is connected in external engine, including oil inlet pipe and flowline, oil inlet pipe with oil filter, and flowline is connected to working connection；Temperature measuring device is arranged on working connection, for detecting the temperature of lubricating oil and exporting oil temperature；Control device includes the first control valve and controller, and the first control valve is arranged between oil filter and working connection.Invention additionally discloses a kind of lubricating oil temperature control methods for engine rig test.The present invention, which can be realized, controls the lubricating oil temperature in lubricating oil high-temp performance detection.
Description
Technical field
The present invention relates to lubricating oil detection fields, more particularly, to a kind of lubricating oil temperature for engine rig test
Control system and method.
Background technique
With automobile industry development, requirements at the higher level, such as overlength oil drain interval are proposed to engine lubrication oil quality；Make
Engine consumption is reduced with more low-viscosity oil, while not influencing lubricant effect；Specific oil consumption is controlled, guarantees emission compliance
Deng.Oil changing interval is extended, vehicle use cost can be reduced, there are very high economic results in society.
An important method for evaluating lubricating oil quality is engine rig test, and lubricating oil standard all over the world has
In the correlation method of evaluation, such as domestic API standard currently in use now, D7422, D8048 etc. are using engine bed
Frame is tested to evaluate lubricating oil.
In the high-temperature behavior detection for being lubricated oil, it usually needs the temperature for controlling lubricating oil is maintained at 100 DEG C or more
Some temperature value, in traditional engine rig test, due in used engine have oil cooler, into
When row lubricating oil detects, lubricating oil temperature can be reduced automatically, generally use the method for installing external heating device additional to improve profit
The temperature of lubricating oil, however the actual working state of lubricating oil can not be obtained by external heating, it is easy to influence the inspection of lubricating oil
Survey as a result, external heating simultaneously to may result in lubricating oil local temperature excessively high, so as to cause local metamorphism.
Summary of the invention
Based on the above, the purpose of the present invention is to provide a kind of lubricating oil temperature controls for engine rig test
System and method processed, realization control the lubricating oil temperature in lubricating oil high-temp performance detection.
To achieve the above object, the invention adopts the following technical scheme:
The present invention provides a kind of lubricating oil temperature control system for engine rig test, including engine, change
Thermal, temperature measuring device and control device, engine include oil filter, oil cooler and working connection, wherein institute
It states oil filter to be directly connected to the working connection, to be shorted the oil cooler, makes lubricating oil through the oil filtration
Device can be directly entered the working connection；Heat-exchanger rig be arranged in the external engine, the heat-exchanger rig include oil inlet pipe and
Flowline, the oil inlet pipe are connected to the oil filter, and the flowline is connected to the working connection；Temperature measuring device
It is arranged on the working connection, for detecting the temperature of the lubricating oil and exporting oil temperature；Control device includes the first control
Valve and controller, first control valve is arranged between the oil filter and the working connection, for controlling the machine
On-off between oil rectifier and the working connection；The controller is controlled with the temperature measuring device, described first respectively
Valve is connected with the heat-exchanger rig, and the controller first control valve can be controlled according to the oil temperature and the heat exchange fills
It sets.
Further, the heat-exchanger rig further includes heat exchanger, circulating water device and the second control valve, the heat exchange
Device includes oil inlet and oil outlet, and the oil inlet is connected with the oil inlet pipe, and the oil outlet is connected with the flowline
It is logical；The circulating water device is connected with the heat exchanger；Second control valve setting the circulating water device with it is described
Between heat exchanger, second control valve is electrically connected with the controller.
Further, the circulating water device includes first passage and second channel, and the heat exchanger includes water inlet
And water outlet, the first passage are connected via second control valve with the water inlet, the second channel is via institute
The second control valve is stated to be connected with the water outlet.
Further, it is provided with regulating valve on the first passage and the second channel, the regulating valve setting exists
Between the circulating water device and second control valve, for adjusting the water in the first passage and the second channel
Flow.
Further, the circulating water device is set as constant temperature and pressure and constant flow rate.
Further, third control valve is provided on the oil inlet pipe, the third control valve is connect with the controller,
For controlling lubricating oil into the heat-exchanger rig.
Further, the lubricating oil temperature control system further includes transfer block, for connect the engine with it is described
Heat-exchanger rig, the transfer block be equipped with the first connecting hole and the second connecting hole, the both ends of first connecting hole respectively with institute
Oil inlet pipe is stated to be connected to the oil filter, the both ends of second connecting hole respectively with the flowline and the working connection
Connection.
Further, pressure sensor is additionally provided in the transfer block, the pressure sensor setting connects described first
It connects on hole.
The present invention also provides a kind of lubricating oil temperature control methods for engine rig test, and engine includes machine
Oil rectifier, oil cooler and working connection, oil cooler setting the oil filter and the working connection it
Between, lubricating oil successively can enter the working connection via the oil filter and the oil cooler, comprising:
S1: being shorted the oil cooler, is directly connected to the oil filter with the working connection；
S2: preset temperature controlling value is set as T1；
S3: the first control valve of connection disconnects the second control valve and third control valve；
Lubricating oil is passed through in S4: Xiang Suoshu engine；
S5: detecting the temperature T2 of presently described working connection, compare T2 and T1, if T2≤T1, judgement is currently entering heating
State, and enter S6, if T2 > T1, judgement is currently entering the state of cooling, and enters S7；
S6: keeping being connected to first control valve, disconnects second control valve and the third control valve, described to start
The lubricating oil is heated in machine work, increases the lubricating oil temperature, while returning to S5 and continuing temperature detection；
S7: controller output signal closes first control valve, is connected to second control valve and third control
Valve enters the lubricating oil in heat exchanger via the oil filter and exchanges heat, the lubrication oil stream after heat exchange
The working connection is returned, while returning to S5 and continuing temperature detection.
Further, it is connected in step S7 after second control valve, further includes manually controlling regulating valve, to circulation
The flow that water enters the heat exchanger is finely adjusted.
The invention has the benefit that
The real-time detection of lubricating oil temperature is realized by temperature measuring device, and exports Lubricating Oil temperature value, control first
Control valve and heat-exchanger rig, when oil temperature is low, controller controls the first control valve and opens, and heat-exchanger rig does not work, makes to lubricate
Oil flows directly into working connection work heating；When oil temperature is high, controller controls the first control valve and closes, heat-exchanger rig work,
So that lubricating oil is entered working connection via heat-exchanger rig, realizes the cooling of lubricating oil.
Detailed description of the invention
Fig. 1 is the lubricating oil temperature control system for engine rig test provided in the specific embodiment of the invention
Structural schematic diagram；
Fig. 2 is the structural schematic diagram of the adapter provided in the specific embodiment of the invention；
Fig. 3 is the structural schematic diagram of the transfer block provided in the specific embodiment of the invention；
Fig. 4 is the lubricating oil temperature control method for engine rig test provided in the specific embodiment of the invention
Flow chart.
In figure:
100- oil filter；200- working connection；
1- heat-exchanger rig；11- oil inlet pipe；12- flowline；13- heat exchanger；14- circulating water device；141- first is logical
Road；142- second channel；15- adapter；151- tapered surface；16- transfer block；The first connecting hole of 161-；The second connecting hole of 162-；
17- regulating valve；
2- temperature measuring device；
3- controller；
The first control valve of 4-；
The second control valve of 5-；
6- third control valve.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.In addition it should be noted that, for the ease of
It describes, only the parts related to the present invention are shown rather than entire infrastructure in attached drawing.
As shown in Figure 1, the present embodiment provides a kind of lubricating oil temperature control systems for engine rig test, including
Engine, heat-exchanger rig 1, temperature measuring device 2 and control device.Wherein, engine includes that oil filter 100, machine oil are cold
But device and working connection 200.Specifically, due to will do it automatic cooling to lubricating oil in oil cooler work, make lubricating oil
Temperature is unable to reach the temperature of detection, it may be assumed that 100-125 DEG C, therefore, oil filter 100 and working connection 200 is directly connected
It connects, to be shorted oil cooler, lubricating oil is made to be directly entered working connection 200 through oil filter 100.Specifically, cancel machine oil
The outlet of oil filter 100 is connected to by the heat radiating fin structure in cooler using pipeline with the entrance of working connection 200.It is preferred that
Ground is provided with the first control valve 4 between oil filter 100 and working connection 200, for controlling oil filter 100 and master
On-off between oil circuit 200.
For the setting of heat-exchanger rig 1 in external engine, heat-exchanger rig 1 includes oil inlet pipe 11 and flowline 12, oil inlet pipe 11 with
Oil filter 100 is connected to, and flowline 12 is connected to working connection 200.Illustratively, in the present embodiment, oil inlet pipe 11 and fuel-displaced
Pipe 12 is all made of teflon pipe, has the characteristics that corrosion-resistant, easy cleaning.Preferably, third control valve is provided on oil inlet pipe 11
6, enter heat-exchanger rig 1 for controlling lubricating oil.Further, heat-exchanger rig 1 further includes heat exchanger 13 and circulating water device
14, wherein circulating water device 14 is connected with heat exchanger 13.
Specifically, heat exchanger 13 includes oil inlet, oil outlet, inlet and outlet, oil inlet and 11 phase of oil inlet pipe
Connection, oil outlet are connected with flowline 12, and inlet and outlet are connected to circulating water device 14 respectively.Heat exchanger 13 is
The mature technology product of state of the art, those skilled in the art can detect temperature according to practical lubricating oil and need to carry out
It selects, is repeated no more in the present embodiment.For realize lubricating oil temperature fast cooling, illustratively, in the present embodiment, using beauty
Heat exchanger.Further, optional by the interface of the heat exchanger 13 in this present embodiment, used for U.S. standard screw thread structure
Ground is additionally provided with adapter 15 in the present embodiment, to realize the connection of heat exchanger 13 Yu oil inlet pipe 11, flowline 12.Specifically
Ground, as shown in Fig. 2, one end of adapter 15 is U.S. standard screw thread structure, in mating connection with the interface of heat exchanger 13, turn
The other end of connector 15 is set as tapered surface 151, for being plugged to oil inlet pipe 11 and flowline 12, is convenient for by pyramidal structure
While 15 grafting of adapter, it is ensured that the sealing effect of adapter 15 and oil inlet pipe 11 and flowline 12 prevents oil leak.
Further, it is additionally provided with transfer block 16 between heat-exchanger rig 1 and engine, is filled for connecting engine and heat exchange
Set 1.Specifically, as shown in figure 3, transfer block 16 is equipped with the first connecting hole 161 and the second connecting hole 162, the first connecting hole 161
Both ends be connected to respectively with oil inlet pipe 11 and oil filter 100, the both ends of the second connecting hole 162 respectively with flowline 12 and main
Oil circuit 200 is connected to.Optionally, pressure sensor is additionally provided in transfer block 16, pressure sensor is arranged in the first connecting hole 161
On, for detecting lubricating oil pressure, monitor value is provided for the bench test of lubricating oil.
Circulating water device 14 includes first passage 141 and second channel 142, and first passage 141 is connected with water inlet, the
Two channels 142 are connected with water outlet, to make recirculated water via in 141 inflow heat exchanger 13 of first passage, to heat exchange
After lubricating oil in device 13 is cooled down, recirculated water flows back to circulating water device 14 via second channel 142 again, realizes cycle down
Temperature.For the circulating water flow in control heat exchanger 13, different degrees of cooling is realized to the lubricating oil in heat exchanger 13, it is excellent
Selection of land is provided with the second control valve 5 between circulating water device 14 and heat exchanger 13, and specifically, the setting of the second control valve 5 exists
On first passage 141 and second channel 142, that is, first passage 141 is connected via the second control valve 5 with water inlet, and second is logical
Road 142 is connected via the second control valve 5 with water outlet.It is further preferred that circulating water device 14 be set as constant temperature and pressure and
Constant flow rate, only need to adjust the second control valve 5 can be realized the flow of recirculated water in first passage 141 and second channel 142, from
And realize single control, improve the accuracy of control.It is further preferred that being all provided on first passage 141 and second channel 142
It is equipped with regulating valve 17, regulating valve 17 is arranged between circulating water device 14 and the second control valve 5, for adjusting first passage 141
With the flow of the recirculated water in second channel 142, to realize fine tuning.Illustratively, regulating valve 17 can use ball valve, cock
Valve etc., certainly, the present embodiment is not specifically limited in this embodiment.
Temperature measuring device 2 is arranged on working connection 200, for detecting the temperature of lubricating oil and output in working connection 200
Oil temperature.Illustratively, temperature measuring device 2 include temperature sensor, temperature sensor can be thermal resistance or thermocouple,
It is directly installed on the outer wall of working connection 200, since 200 outer wall of working connection is metal material, for the good conductor of heat, therefore main oil
200 outside wall temperature of road reflects the oil temperature of lubricating oil in working connection 200 substantially.Further, smart in order to be carried out to Lubricating Oil Temperature
Really measurement, can also be arranged multiple temperature measuring devices 2, avoid causing detection mistake due to 2 failure of portion temperature measuring device.
Certainly, the specific installation site of temperature measuring device 2 can be configured according to space in actually detected needs and engine, this
Embodiment is not specifically limited in this embodiment.
Control device includes controller 3, controller 3 respectively with temperature measuring device 2, the first control valve 4, the second control valve
5 and third control valve 6 be electrically connected.Specifically, controller 3 is connected with temperature measuring device 2, for receiving temperature measuring device
The oil temperature of 2 outputs, and oil temperature is compared with the first default oil temperature, control signal is exported according to comparison result, from
And control the on-off of the first control valve 4, the second control valve 5 and third control valve 6.When oil temperature is not more than the first preset temperature control
When value processed, controller 3 controls the connection of the first control valve 4, and the second control valve 5 and third control valve 6 disconnect, and makes lubricating oil via machine
Oil rectifier 100 is directly entered in working connection 200；When oil temperature is greater than the first preset temperature controlling value, the control of controller 3 the
One control valve 4 is closed, and third control valve 6 is opened, and is entered lubricating oil in heat exchanger 13 via oil filter 100 and is changed
Heat, while controller 3 adjusts the aperture of the second control valve 5 according to oil temperature, enters certain recirculated water in heat exchanger 13,
Cool down to the lubricating oil in heat exchanger 13, the lubricating oil after cooling flows back in working connection 200.
The lubricating oil temperature control system for engine rig test in the present embodiment can be according to the temperature of lubricating oil
Degree, by the on-off of control valve, realizes that two of lubricating oil flow through route: being that lubricating oil is straight via oil filter 100 all the way
It connects and flows into working connection 200；Another way is lubricating oil via the inflow heat-exchanger rig 1 of oil filter 100, flows into main oil after heat exchange again
Road 200.To realize the control of lubricating oil temperature, keep lubricating oil at a certain temperature.
As shown in figure 4, the present embodiment also proposed a kind of lubricating oil temperature control method for engine rig test,
Engine includes oil filter 100, oil cooler and working connection 200, and oil cooler is arranged in 100 He of oil filter
Between working connection 200, lubricating oil successively can enter working connection 200, this method via oil filter 100 and oil cooler
The following steps are included:
S1: it is shorted oil cooler, is directly connected to oil filter 100 with working connection 200；
S2: preset temperature controlling value is set as T1；
S3: the first control valve 4 of connection disconnects the second control valve 5 and third control valve 6；
S4: lubricating oil is passed through into engine；
S5: detecting the temperature T2 of current working connection 200, compare T2 and T1, if T2≤T1, judgement is currently entering heating shape
State, and enter S6, if T2 > T1, judgement is currently entering the state of cooling, and enters S7；
S6: keeping the first control valve 4 of connection, disconnects the second control valve 5 and third control valve 6, engine operation heating profit
Lubricating oil increases lubricating oil temperature, while returning to S5 and continuing temperature detection；
S7: 3 output signal of controller closes the first control valve 4, is connected to the second control valve 5 and third control valve 6, makes to moisten
Lubricating oil enters in heat exchanger 13 via oil filter 100 to exchange heat, and the lubricating oil after heat exchange flows back to working connection 200, together
When return S5 continue temperature detection.
Further, it is connected in above-mentioned steps S7 after the second control valve 5, further includes manually controlling regulating valve 17, to following
The flow that ring water enters heat exchanger 13 is finely adjusted, so as to accurate control lubricating oil temperature as needed.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but invention is not limited only to above embodiments, without departing from the inventive concept, may be used also
To include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of lubricating oil temperature control system for engine rig test characterized by comprising
Engine, including oil filter (100), oil cooler and working connection (200), wherein the oil filter
(100) it is directly connected to the working connection (200), to be shorted the oil cooler, makes lubricating oil through the oil filter
(100) working connection (200) can be directly entered；
Heat-exchanger rig (1) is arranged in the external engine, and the heat-exchanger rig (1) includes oil inlet pipe (11) and flowline
(12), the oil inlet pipe (11) is connected to the oil filter (100), the flowline (12) and the working connection (200)
Connection；
Temperature measuring device (2) is arranged on the working connection (200), for detecting the temperature of the lubricating oil and exporting oil
Temperature value；
Control device, including the first control valve (4) and controller (3), first control valve (4) are arranged in the oil filtration
Between device (100) and the working connection (200), for controlling between the oil filter (100) and the working connection (200)
On-off；The controller (3) respectively with the temperature measuring device (2), first control valve (4) and the heat-exchanger rig
(1) it connects, the controller (3) can control first control valve (4) and the heat-exchanger rig (1) according to the oil temperature.
2. the lubricating oil temperature control system according to claim 1 for engine rig test, which is characterized in that institute
Stating heat-exchanger rig (1) further includes heat exchanger (13), circulating water device (14) and the second control valve (5), the heat exchanger
(13) include oil inlet and oil outlet, the oil inlet is connected with the oil inlet pipe (11), the oil outlet with it is described fuel-displaced
Pipe (12) is connected；The circulating water device (14) is connected with the heat exchanger (13)；Second control valve (5) setting exists
Between the circulating water device (14) and the heat exchanger (13), second control valve (5) is electrically connected with the controller (3)
It connects.
3. the lubricating oil temperature control system according to claim 2 for engine rig test, which is characterized in that institute
Stating circulating water device (14) includes first passage (141) and second channel (142), the heat exchanger (13) include water inlet and
Water outlet, the first passage (141) are connected via second control valve (5) with the water inlet, the second channel
(142) it is connected via second control valve (5) with the water outlet.
4. the lubricating oil temperature control system according to claim 3 for engine rig test, which is characterized in that institute
It states and is provided with regulating valve (17) on first passage (141) and the second channel (142), the regulating valve (17) is arranged in institute
It states between circulating water device (14) and second control valve (5), leads to for adjusting the first passage (141) and described second
The flow of water in road (142).
5. the lubricating oil temperature control system according to claim 2 for engine rig test, which is characterized in that institute
It states circulating water device (14) and is set as constant temperature and pressure and constant flow rate.
6. the lubricating oil temperature control system according to claim 1 for engine rig test, which is characterized in that institute
It states and is provided on oil inlet pipe (11) third control valve (6), the third control valve (6) connect with the controller (3), for controlling
Lubricating oil processed enters the heat-exchanger rig (1).
7. the lubricating oil temperature control system according to claim 1 for engine rig test, which is characterized in that also
Including transfer block (16), for connecting the engine and the heat-exchanger rig (1), the transfer block (16) is equipped with first and connects
Connect hole (161) and the second connecting hole (162), the both ends of first connecting hole (161) respectively with the oil inlet pipe (11) and institute
State oil filter (100) connection, the both ends of second connecting hole (162) respectively with the flowline (12) and the main oil
Road (200) connection.
8. the lubricating oil temperature control system according to claim 7 for engine rig test, which is characterized in that institute
It states and is additionally provided with pressure sensor on transfer block (16), the pressure sensor is arranged on first connecting hole (161).
9. a kind of lubricating oil temperature control method for engine rig test, engine includes oil filter (100), machine
Oil cooler and working connection (200), the oil cooler are arranged in the oil filter (100) and the working connection
(200) between, lubricating oil successively can enter the working connection via the oil filter (100) and the oil cooler
(200) characterized by comprising
S1: being shorted the oil cooler, is directly connected to the oil filter (100) with the working connection (200)；
S2: preset temperature controlling value is set as T1；
S3: connection the first control valve (4) disconnects the second control valve (5) and third control valve (6)；
Lubricating oil is passed through in S4: Xiang Suoshu engine；
S5: detecting the temperature T2 of presently described working connection (200), compare T2 and T1, if T2≤T1, judgement is currently entering heating
State, and enter S6, if T2 > T1, judgement is currently entering the state of cooling, and enters S7；
S6: it keeps being connected to first control valve (4), disconnects second control valve (5) and the third control valve (6), institute
It states engine operation and heats the lubricating oil, increase the lubricating oil temperature, while returning to S5 and continuing temperature detection；
S7: controller (3) output signal closes first control valve (4), is connected to second control valve (5) and described the
Three control valves (6) enter the lubricating oil in heat exchanger (13) via the oil filter (100) and exchange heat, change
The lubricating oil after heat flows back to the working connection (200), while returning to S5 and continuing temperature detection.
10. the lubricating oil temperature control method according to claim 9 for engine rig test, which is characterized in that
It is connected in step S7 after second control valve (5), further includes manually controlling regulating valve (17), to described in recirculated water entrance
The flow of heat exchanger (13) is finely adjusted.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110314943A (en) * | 2019-08-05 | 2019-10-11 | 山东钢铁股份有限公司 | A kind of cold-rolling emulsion automatic temperature control system and method |
| CN110487537A (en) * | 2019-09-10 | 2019-11-22 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of transmission bench test oil temperature control system |
| CN114483252A (en) * | 2022-01-19 | 2022-05-13 | 武汉理工大学 | Engine oil replacement precision control system and control method for engine pedestal |
| CN115390595A (en) * | 2022-08-22 | 2022-11-25 | 奇瑞汽车股份有限公司 | Lubricating oil temperature adjusting device and engine bench test system |
| US11906939B2 (en) | 2020-12-21 | 2024-02-20 | Industrial Technology Research Institute | Lubricating oil volume adjustment system and lubricating oil volume adjustment method |
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