CN111981113A - New energy automobile transmission or power assembly speed reducer lubricating method - Google Patents
New energy automobile transmission or power assembly speed reducer lubricating method Download PDFInfo
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- CN111981113A CN111981113A CN202011010130.5A CN202011010130A CN111981113A CN 111981113 A CN111981113 A CN 111981113A CN 202011010130 A CN202011010130 A CN 202011010130A CN 111981113 A CN111981113 A CN 111981113A
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- lubricating
- transmission
- lubricating oil
- new energy
- energy automobile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0458—Oil-mist or spray lubrication; Means to reduce foam formation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0458—Oil-mist or spray lubrication; Means to reduce foam formation
- F16H57/046—Oil-mist or spray lubrication
Abstract
The invention discloses a lubricating method for a new energy automobile transmission or a power assembly speed reducer, which is characterized in that a mechanism for dispersing lubricating oil is arranged on the new energy automobile transmission or the power assembly speed reducer, and the lubricating oil is dispersed by the mechanism for dispersing the lubricating oil and then is conveyed to the surface of a part needing to be lubricated in a box body of the new energy automobile transmission or the power assembly speed reducer, so that the dispersed lubricating oil is in contact with the part in the box body for lubrication. The invention can realize the sufficient lubrication of the parts through smaller lubricating flow, avoid the accumulation of lubricating oil in the box body and the oil stirring loss of the reduction box, reduce the impact on the parts, particularly the gears and not add extra load to the parts.
Description
Technical Field
The invention relates to a lubricating method, in particular to a lubricating method for a transmission or a power assembly reducer of a new energy automobile.
Background
With the increasing development of new energy automobile technology, the performance and cost competition of new energy automobiles puts higher demands on electric drive systems, and the electric drive systems are highly integrated and light in weight, which is the trend of development in the future. In the design concept of high integration and light weight of an electric drive system, high rotating speed and high power density are important methods for realizing light weight of the electric drive system, and cooling and lubrication of the electric drive system are inevitably caused for realizing the high rotating speed and the high power density.
At present, the integration of an oil-cooled motor and an active lubrication technology is a solution for cooling and lubrication, the active lubrication mode can improve the assembly efficiency, and the efficiency of the assembly can be effectively improved only by complex oil duct design and oil mass design. In the active lubrication mode of the electric drive assembly, the lubricating oil is generally delivered to the position needing lubrication through an oil pump and a pipeline. Such a lubrication method can ensure that the assembly is fully lubricated to the maximum extent, but because the injected medium is liquid and the direction and angle of the injection are fixed, in order to ensure the lubrication, the flow rate is often selected as large as possible in design. This adds to the power loss of the oil pump and is detrimental to further optimizing the efficiency of the assembly.
In the above-described lubrication system, the lubricating medium is injected to the gears and bearings by the oil pump, and the lubricating medium is generally a common lubricating oil and is in a liquid state; when fluid is sprayed onto lubricated parts, additional loads are placed on the parts, particularly the gears. Meanwhile, if the lubricating liquid in the box body does not enter the circulation through the oil pump in time and is accumulated in the box body, the oil stirring loss can be caused to the assembly due to the fact that the gear rotates to stir the oil.
Through searching, the patent documents which are the same as or similar to the patent documents in the application are not discovered for a while.
In summary, a new energy automobile transmission or power assembly speed reducer lubricating method is urgently needed to be designed, so that the parts can be fully lubricated through a small lubricating flow, the lubricating oil is prevented from being accumulated in a box body, the oil stirring loss of a reduction box is avoided, meanwhile, the impact on the parts, particularly gears, can be reduced, and the technical problem that extra load is not added to the parts is urgently needed to be solved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a lubricating method for a new energy automobile transmission or a power assembly speed reducer, aiming at the defects in the prior art, the method can realize the sufficient lubrication of parts through a smaller lubricating flow, avoid the accumulation of lubricating oil in a box body and the oil stirring loss of a reduction box, reduce the impact on the parts, particularly gears and not add extra load to the parts.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a lubricating method for a new energy automobile transmission or a power assembly speed reducer is characterized in that a mechanism for dispersing lubricating oil is arranged on the new energy automobile transmission or the power assembly speed reducer, and the lubricating oil is dispersed by the mechanism for dispersing the lubricating oil and then is conveyed to the surface of a part needing to be lubricated in a box body of the new energy automobile transmission or the power assembly speed reducer, so that the dispersed lubricating oil is in contact with the part in the box body for lubrication; the contact area of the dispersed lubricating oil and the parts is enlarged, and the lubrication is more sufficient, so that the purpose of reducing the lubricating flow is achieved.
Preferably, the form of the dispersed lubricating oil includes an oil mist, dispersed oil droplets, or a mixture of the oil mist and the dispersed oil droplets.
Preferably, the lubricating oil is dispersedly injected inside the tank.
Preferably, the mechanism for dispersing the lubricating oil comprises a power source, a pipeline and a dispersing part, and the dispersing part is communicated with the power source through the pipeline; the dispersion member is disposed inside the case.
Preferably, the dispersing component is a nozzle or a spray head, and the power source is an oil pump.
Preferably, the form of the dispersed lubricating oil is adjusted by adjusting the nozzle according to the actual working condition requirement.
Preferably, the oil pump is integrated outside the tank, and the pipes and the nozzles or nozzles are arranged inside the tank.
Preferably, when the gear in the case is lubricated, the sprayed state of the dispersed lubricating oil is formed into a fan shape, and the width direction of the fan-shaped dispersed lubricating oil is aligned with the tooth direction of the teeth on the gear.
Preferably, the dispersing member is provided in plurality, and each dispersing member is provided in the meshing position of a pair of transmission gears in the casing.
Preferably, when the pair of transmission gears are screwed from top to bottom toward the middle meshing position of the pair of transmission gears, each dispersing member is arranged above one of the pair of transmission gears or above the meshing position of the pair of transmission gears; when the screwing directions of the pair of transmission gears are screwed in from bottom to top towards the two side parts of the pair of transmission gears, each dispersion part is arranged at the position right above the middle meshing position of the pair of transmission gears.
The invention has the beneficial effects that: the invention can realize the full lubrication of the parts through smaller lubricating flow, thereby avoiding the accumulation of lubricating oil in the box body and avoiding the oil stirring loss of the power assembly; the consumption of the lubricating oil is reduced, and even if leakage occurs, the pollution to the environment can be reduced; meanwhile, the lubricating oil is dispersed by the lubricating oil dispersing mechanism and then the parts are lubricated, and compared with the method of directly spraying the lubricating oil on the parts, the resistance to the parts such as gears or bearings is greatly reduced, and the efficiency loss of a speed changer or a power assembly speed reducer is reduced. The form of the dispersed lubricating oil can be adjusted according to the actual working condition requirements, so that the application range of the lubricating method is wider. Through carrying out the dispersion injection with lubricating oil inside the box, the pipeline pipe diameter can be selected moderately, and also does not have too much requirement to the length of pipeline to can be according to the operating condition demand, set up nozzle or shower nozzle in the most suitable position. The spraying state of the dispersed lubricating oil is fan-shaped, and the length direction of the fan-shaped dispersed lubricating oil is consistent with the length direction of gear teeth on the gear, so that the resistance caused during gear transmission can be further reduced, and the power consumption is reduced. The specific position of the nozzle or the spray head in the box body is set according to the rotating direction of the transmission gear, so that the resistance of oil injection to gear transmission can be further reduced.
Drawings
FIG. 1 is a schematic view showing an internal structure of a case body when lubrication is performed by a lubrication method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the relationship between the spraying state of the dispersed lubricating oil and the lubricated gear when the gear is lubricated according to the embodiment of the present invention;
FIG. 3 is a schematic partial perspective view of a nozzle or nozzle tip in accordance with an embodiment of the present invention;
FIG. 4 is a first schematic view illustrating the specific position of the nozzle or the spray head in the box body according to the rotation direction of the transmission gear in the embodiment of the invention;
FIG. 5 is a second schematic diagram illustrating the specific position of the nozzle or the spray head in the box body according to the rotation direction of the transmission gear in the embodiment of the invention;
in the figure: 1. dispersing part, 2, pipeline, 3, box, 4, gear, 411, gear teeth, 5, fan-shaped dispersed lubricating oil, 6, spray nozzle or spray head, and 7, spray groove.
Detailed Description
The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.
Example (b): the invention discloses a lubricating method for a new energy automobile transmission or a power assembly speed reducer, which is characterized in that a box body of the new energy automobile transmission or the power assembly speed reducer is provided with a mechanism for dispersing lubricating oil, and the lubricating oil is dispersed by the mechanism for dispersing the lubricating oil and then is conveyed to the surface of a part needing to be lubricated in the box body of the new energy automobile transmission or the power assembly speed reducer, so that the dispersed lubricating oil is in contact with the part in the box body for lubrication; the contact area of the dispersed lubricating oil and the parts is enlarged, and the lubrication is more sufficient, so that the purpose of reducing the lubricating flow is achieved. The invention can realize the full lubrication of the parts through smaller lubricating flow, thereby avoiding the accumulation of lubricating oil in the box body and avoiding the oil stirring loss of the power assembly; the consumption of the lubricating oil is reduced, and even if leakage occurs, the pollution to the environment can be reduced; meanwhile, the lubricating oil is dispersed by the lubricating oil dispersing mechanism and then the parts are lubricated, and compared with the method of directly spraying the lubricating oil on the parts, the resistance to the parts such as gears or bearings is greatly reduced, and the efficiency loss of a speed changer or a power assembly speed reducer is reduced.
As shown in fig. 1, in the present embodiment, the mechanism for dispersing lubricating oil includes a power source, a conduit, and a dispersing member, and the dispersing member and the power source are communicated through the conduit; the dispersion member is disposed inside the case. The power source is an oil pump (not shown in the figure), the oil pump can adopt an electronic pump or a mechanical pump, the dispersing component 1 can adopt a nozzle or a spray head, and the pipeline 2 can adopt a hard plastic pipe, such as a PA66 pipe, and the like, or can adopt a metal pipe.
Lubricating oil is dispersedly sprayed into a box body of a new energy automobile transmission or a power assembly speed reducer through a nozzle or a spray head, the dispersed lubricating oil can be regulated according to actual working condition requirements, for example, the lubricating oil can be completely sprayed into an oil mist shape after being dispersed through the nozzle or the spray head, oil drops in a dispersed sparse shape can be formed, and the oil drops can be in a mixed state of the two states. The most preferable oil mist form is adopted in the three forms, if all the lubricating oil forms the oil mist form, the arrangement of an oil duct does not need to be considered, an oil duct does not need to be arranged, the mist lubricating medium can be directly filled in the whole box body, the oil mist form lubricating oil is attached to the surfaces of all the parts, the purpose of simplifying the design of the oil duct is achieved, and the lubricating efficiency is fully realized.
The state of the lubricating oil of the assembly is adjusted by selecting different nozzles or spray heads, and the state of the lubricating oil is selected according to the lubricating and cooling requirements of the actual assembly, so that the types of the nozzles or spray heads are determined.
The applicant has also studied the dispersion position of the lubricating oil, in two forms: firstly, performing dispersion treatment outside the box body, namely dispersing lubricating oil outside the box body and conveying the lubricating oil to the inside of the box body through a pipeline; secondly, dispersion treatment is carried out in the box body, namely a nozzle or a spray head is arranged in the box body, and lubricating oil is conveyed into the box body by an oil pump and then is dispersed and sprayed in the box body through the nozzle or the spray head. In the second processing mode, if the lubricating oil is firstly dispersed outside the box body and then conveyed into the box body through the pipeline in the first processing mode, in order to ensure that the lubricating oil is still in a dispersed state after reaching the inside of the box body, the pipe diameter of the pipeline required by the lubricating oil is thicker, the occupied space is larger, and the cost is higher; in addition, the length of the required piping must not be too long, which limits the position of the input points on the tank and therefore affects the design requirements. In the embodiment, the lubricating oil is dispersedly sprayed in the box body, so that the problems are solved, the pipe diameter of the pipeline can be properly selected, and the length of the pipeline is not required too much, so that a nozzle or a spray head can be arranged at the most appropriate position according to the requirements of actual working conditions.
In addition, the pipe between the nozzle or the nozzle head and the oil pump is preferably not exposed to the box, i.e. the nozzle or the nozzle head and the pipe are arranged in the box, because the exposure to the box increases the difficulty of sealing the box, thereby increasing the risk of environmental pollution. Thus, in the present embodiment, the oil pump is integrated on the outside of the tank 3, and is not shown in fig. 2, because fig. 2 shows the case of the inside side of the tank, and the oil pump is integrated on the outside side of the tank 3, communicating with the nozzle or the head through the pipe 2 provided inside the tank 3.
The applicant also studied the relationship between the injection state of the dispersed lubricating oil and the components to be lubricated. In particular, when lubricating a gear, the applicant has found that it is preferable that the sprayed state of the dispersed lubricating oil is formed into a fan shape, and the width direction W of the fan-shaped dispersed lubricating oil is aligned with the tooth direction of the teeth of the gear. As shown in fig. 2 and 4, since there are many types of gears, the distribution of the teeth of the gears on the root circle is not uniform, while helical gear transmission is generally adopted in a transmission or a reducer, the tooth direction K of the teeth 411 is also obliquely distributed on the root circle of the gear 4, so that the width direction W of the fan-shaped dispersed lubricating oil is also obliquely sprayed, and the length directions of the two are parallel to each other, thereby further reducing resistance to the gear transmission and power consumption.
In order to form the nozzle or the nozzle head 6 into the fan-shaped dispersed lubricating oil, as shown in fig. 3, an injection groove 7 may be formed in an end surface of the nozzle or the nozzle head 6, and the injected lubricating oil is injected through the injection groove 7 to form the fan-shaped dispersed lubricating oil. The nozzle or nozzle head 6 may be a fan nozzle or fan nozzle.
The applicant has also studied the position of the nozzle or the spray head. Firstly, it is preferable that a plurality of nozzles or heads are provided at the transmission positions of each pair of the transmission gears, as shown in fig. 1, and the dispersion member 1, i.e., the nozzles or heads, provided in the casing is provided, each nozzle or head is provided at the transmission position of one pair of the transmission gears in the casing, and two nozzles or heads are shown in fig. 1, and the two nozzles or heads are located at the transmission positions of the two pairs of the transmission gears in sections.
Secondly, more specifically, the position of the nozzle or the head may also be set according to the rotation direction of a pair of transmission gears. As shown in fig. 4 and 5 (the direction of the arrow in the figures represents the rotation direction of the gears), when the rotation direction of a pair of transmission gears 4 is from top to bottom (i.e. from point a to point B in fig. 4) toward the middle meshing part of the pair of transmission gears 4, the nozzle or the spray head 6 can be arranged at the upper part of one of the transmission gears 4; when the rotation directions of the pair of transmission gears 4 are from bottom to top (i.e., from point B to point a in fig. 5) and are screwed toward both side portions of the pair of transmission gears 4, the nozzle or the head 6 is disposed at a position above the middle meshing portion of the pair of transmission gears 4; this arrangement can further increase the lubricating effect.
In order to verify the lubrication effect, the applicant performs a related comparison test, and the applicant performs a conventional active lubrication test and a lubrication method test in the embodiment on the same sample machine, wherein the following data are three comparison tests, as follows:
first comparative test data:
wherein, the test conditions of the A group and the B group are as follows: the loading of the prototype is 10Nm, and the lubricating flow is one; group a is the conventional active lubrication test and group B is the lubrication method test in this example.
Second comparative test data:
wherein, the test conditions of the A group and the B group are as follows: the loading of the prototype is all 30Nm, and the lubricating flow is all two; group a is the conventional active lubrication test and group B is the lubrication method test in this example.
Third comparative test data:
wherein, the test conditions of the A group and the B group are as follows: the loading of the prototype is 100Nm, and the lubricating flow is three; group a is the conventional active lubrication test and group B is the lubrication method test in this example.
From the above three sets of comparative test data, it can be seen that the power consumption of the prototype performing conventional active lubrication is greater than that of the prototype performing lubrication using the lubrication method in the present embodiment at various rotation speeds, such as 500rpm, 2000rpm, 4000rpm, 5000rpm, and the like, under various loading loads and lubrication flow rates. Therefore, the lubricating method in the embodiment is used for lubricating, so that the power loss of a new energy automobile transmission or a power assembly speed reducer can be reduced, and the power assembly efficiency is effectively improved.
In conclusion, the invention can realize the full lubrication of the parts through smaller lubricating flow, avoid the accumulation of lubricating oil in the box body and avoid the oil stirring loss of the power assembly; the consumption of the lubricating oil is reduced, and even if leakage occurs, the pollution to the environment can be reduced; meanwhile, the lubricating oil is dispersed by the lubricating oil dispersing mechanism and then the parts are lubricated, and compared with the method of directly spraying the lubricating oil on the parts, the resistance to the parts such as gears or bearings is greatly reduced, and the efficiency loss of a speed changer or a power assembly speed reducer is reduced. The form of the dispersed lubricating oil can be adjusted according to the actual working condition requirements, so that the application range of the lubricating method is wider. Through carrying out the dispersion injection with lubricating oil inside the box, the pipeline pipe diameter can be selected moderately, and also does not have too much requirement to the length of pipeline to can be according to the operating condition demand, set up nozzle or shower nozzle in the most suitable position. The spraying state of the dispersed lubricating oil is fan-shaped, and the length direction of the fan-shaped dispersed lubricating oil is consistent with the length direction of gear teeth on the gear, so that the resistance caused during gear transmission can be further reduced, and the power consumption is reduced. The specific position of the nozzle or the spray head in the box body is set according to the rotating direction of the transmission gear, so that the resistance of oil injection to gear transmission can be further reduced.
The "plurality" described in this embodiment is the number of "two or more". The above embodiments are provided for illustrative purposes only and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should fall within the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (10)
1. A lubricating method for a new energy automobile transmission or a power assembly speed reducer is characterized by comprising the following steps: the mechanism for dispersing lubricating oil is arranged on a new energy automobile transmission or a power assembly speed reducer, and the lubricating oil is dispersed by the mechanism for dispersing lubricating oil and then conveyed to the surface of a part needing to be lubricated in a box body of the new energy automobile transmission or the power assembly speed reducer, so that the dispersed lubricating oil is in contact with the part in the box body for lubrication.
2. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to claim 1, characterized in that: the form of the dispersed lubricating oil comprises oil mist or dispersed sparse oil drops or a mixed state of the oil mist and the dispersed sparse oil drops.
3. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to claim 1, characterized in that: the lubricating oil is dispersedly sprayed inside the box body.
4. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to claim 3, characterized in that: the lubricating oil dispersing mechanism comprises a power source, a pipeline and a dispersing part, and the dispersing part is communicated with the power source through the pipeline; the dispersion member is disposed inside the case.
5. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to claim 4, characterized in that: the dispersing component is a nozzle or a spray head, and the power source is an oil pump.
6. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to claim 5, characterized in that: and selecting the state of the lubricating oil meeting the requirements of lubrication and cooling according to the requirements of actual working conditions, and further determining the type of the nozzle or the spray head.
7. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to claim 5, characterized in that: the oil pump integration is outside the box, and pipeline and nozzle or shower nozzle all set up inside the box.
8. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to any one of claims 1 to 7, characterized in that: when the gear in the box body is lubricated, the spraying state of the dispersed lubricating oil is in a fan shape, and the width direction of the fan-shaped dispersed lubricating oil is consistent with the tooth direction of the gear teeth on the gear.
9. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to any one of claims 1 to 7, characterized in that: the dispersing component is provided with a plurality of dispersing components, and each dispersing component is arranged at the meshing position of a pair of transmission gears in the box body.
10. The method for lubricating a transmission or a powertrain retarder of a new energy automobile according to claim 9, characterized in that: when the rotating direction of the pair of transmission gears is from top to bottom and the transmission gears are screwed towards the middle meshing part of the pair of transmission gears, each dispersion part is arranged above one of the transmission gears or above the meshing position of the transmission gears; when the screwing directions of the pair of transmission gears are screwed in from bottom to top towards the two side parts of the pair of transmission gears, each dispersion part is arranged at the position right above the middle meshing position of the pair of transmission gears.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011010130.5A CN111981113A (en) | 2020-09-23 | 2020-09-23 | New energy automobile transmission or power assembly speed reducer lubricating method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011010130.5A CN111981113A (en) | 2020-09-23 | 2020-09-23 | New energy automobile transmission or power assembly speed reducer lubricating method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008025832A (en) * | 2006-06-21 | 2008-02-07 | Kawasaki Heavy Ind Ltd | Low-loss gear device |
| JP2012087822A (en) * | 2010-10-15 | 2012-05-10 | Isuzu Motors Ltd | Cooling promotion mechanism for transmission |
| JP2017133526A (en) * | 2016-01-25 | 2017-08-03 | Ntn株式会社 | Motor drive unit for vehicle |
| CN206668928U (en) * | 2017-03-03 | 2017-11-24 | 郑州宇通客车股份有限公司 | The decelerator of integrated active lubrication function and the drive system using the decelerator |
| CN207316043U (en) * | 2017-08-25 | 2018-05-04 | 北京新能源汽车股份有限公司 | Retarder lubricating system |
| CN110686069A (en) * | 2019-10-15 | 2020-01-14 | 吉林大学 | Intelligent oil injection lubricating system of high-speed gear transmission device and control method thereof |
| EP3693636A1 (en) * | 2019-02-11 | 2020-08-12 | ALSTOM Transport Technologies | Gearbox for a vehicle and associated vehicle |
-
2020
- 2020-09-23 CN CN202011010130.5A patent/CN111981113A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008025832A (en) * | 2006-06-21 | 2008-02-07 | Kawasaki Heavy Ind Ltd | Low-loss gear device |
| JP2012087822A (en) * | 2010-10-15 | 2012-05-10 | Isuzu Motors Ltd | Cooling promotion mechanism for transmission |
| JP2017133526A (en) * | 2016-01-25 | 2017-08-03 | Ntn株式会社 | Motor drive unit for vehicle |
| CN206668928U (en) * | 2017-03-03 | 2017-11-24 | 郑州宇通客车股份有限公司 | The decelerator of integrated active lubrication function and the drive system using the decelerator |
| CN207316043U (en) * | 2017-08-25 | 2018-05-04 | 北京新能源汽车股份有限公司 | Retarder lubricating system |
| EP3693636A1 (en) * | 2019-02-11 | 2020-08-12 | ALSTOM Transport Technologies | Gearbox for a vehicle and associated vehicle |
| CN110686069A (en) * | 2019-10-15 | 2020-01-14 | 吉林大学 | Intelligent oil injection lubricating system of high-speed gear transmission device and control method thereof |
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