CN216198361U - Pressurization oil return pipeline, pressurization system and vehicle - Google Patents

Abstract

The utility model relates to the technical field of hydraulic systems, and provides a pressurization oil return pipeline, a pressurization system and a vehicle, wherein the pressurization oil return pipeline comprises: the oil return device comprises an oil return pump, a first oil return pipe section and a second oil return pipe section, wherein one end of the first oil return pipe section is connected with an oil inlet of the oil return pump, and the other end of the first oil return pipe section is suitable for being connected with an engine oil outlet of the supercharger; one end of the second oil return pipe section is connected with an oil outlet of the oil return pump, and the other end of the second oil return pipe section is suitable for being connected with an oil return port of the crankcase. According to the supercharging oil return pipeline, the supercharging system and the vehicle, negative pressure can be formed at the engine oil outlet of the supercharger, the engine oil is forcibly pumped back to the crankcase and flows to the oil pan through the crankcase, so that the oil return of the supercharger is smooth, the engine oil is prevented from being retained in the supercharger, and the working reliability of the supercharger is improved. In addition, the oil return pump is connected with the supercharger and the crankcase through the first oil pipe and the second oil pipe, so that the installation is more convenient and the arrangement is easy.

Description

Pressurization oil return pipeline, pressurization system and vehicle

Technical Field

The utility model relates to the technical field of hydraulic systems, in particular to a pressurization oil return pipeline, a pressurization system and a vehicle.

Background

Typically, the oil return from the engine supercharger is directed back into the crankcase via a conduit. Along with the increase of the service time of an engine, the air leakage of a piston is continuously increased, the pressure in a crankcase can be gradually increased, the oil return back pressure of a supercharger is increased, the oil is easy to be retained in the supercharger due to the large oil return back pressure, the temperature of the oil at the floating bearing of the supercharger is abnormally increased, carbonization even occurs in serious conditions, or the oil leakage of a sealing ring is caused, so that the working reliability of the supercharger is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a supercharging oil return pipeline, a supercharging system and a vehicle, which are used for solving the problem that engine oil return oil of a supercharger is easy to be retained in the supercharger in the prior art.

The utility model provides a pressurized oil return pipeline, which comprises:

an oil return pump;

one end of the first oil return pipe section is connected with an oil inlet of the oil return pump, and the other end of the first oil return pipe section is suitable for being connected with an engine oil outlet of the supercharger;

and one end of the second oil return pipe section is connected with an oil outlet of the oil return pump, and the other end of the second oil return pipe section is suitable for being connected with an oil return port of the crankcase.

According to the supercharging oil return pipeline provided by the utility model, the oil return pump is provided with a binding post, and the binding post is suitable for being electrically connected with an engine ECU controller.

The supercharged oil return pipeline further comprises a pressure sensor, wherein the pressure sensor is used for collecting a pressure value of a crankcase of a supercharger, and the pressure sensor is electrically connected with an engine ECU controller.

According to the pressurized oil return pipeline provided by the utility model, the end part of the first oil return pipe section and/or the second oil return pipe section is/are provided with a mounting plate, and the mounting plate is provided with a threaded hole.

According to the pressurized oil return pipeline provided by the utility model, the mounting plate is provided with a sealing gasket.

According to the pressurized oil return pipeline provided by the utility model, the mounting plate is provided with a mounting groove, and one side of the sealing gasket is embedded into the mounting groove.

According to the pressurized oil return pipeline provided by the utility model, the mounting grooves are annular grooves, more than two mounting grooves are coaxially arranged, and more than two sealing gaskets are arranged corresponding to the mounting grooves.

According to the pressurized oil return pipeline provided by the utility model, the end part of the first oil return pipe section and/or the second oil return pipe section is/are provided with an insert ring, the insert ring is suitable for being inserted into an engine oil outlet of the supercharger or an oil return opening of the crankcase, and the insert ring is positioned on the inner side of the sealing gasket.

The present invention also provides a supercharging system comprising: the oil return pipeline is characterized by comprising a supercharger and the supercharging oil return pipeline, wherein an engine oil outlet of the supercharger is connected with the first oil return pipe section, and an oil return opening of the crankcase is connected with the second oil return pipe section.

The utility model also provides a vehicle comprising a charge-back line as described above or a charge-up system as described above.

According to the supercharging oil return pipeline, the supercharging system and the vehicle, the oil return pump is connected between the supercharger and the crankcase in series through the first oil return pipe section and the second oil return pipe section, negative pressure can be formed at the engine oil outlet position of the supercharger when the oil return pump operates, engine oil is forcibly pumped back to the crankcase and flows to the oil pan through the crankcase, the supercharger is enabled to return oil smoothly, engine oil is prevented from being retained in the supercharger, and the working reliability of the supercharger is improved. In addition, the oil return pump is connected with the supercharger and the crankcase through the first oil pipe and the second oil pipe, so that the installation is more convenient and the arrangement is easy.

Furthermore, the oil return pump is electrically connected with an engine ECU controller, and the operation of the oil return pump is intelligently controlled through the engine ECU controller, so that overlarge negative pressure or insufficient negative pressure is avoided.

Furthermore, a pressure sensor is arranged, so that the pressure value of the crankcase can be collected, data support is provided for an engine ECU controller to control the oil return pump, and accurate pressure control is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an overall structure of a pressurized oil return line according to the present invention;

FIG. 2 is a schematic diagram of a first scavenge section in a pressurized scavenge line according to the present invention;

FIG. 3 is a schematic illustration of a first scavenge section installation in a scavenge line;

reference numerals:

100. a supercharger; 110. a supercharger oil outlet;

200. a first return oil pipe section; 210. mounting a plate; 211. a threaded hole; 212. mounting grooves; 220. a gasket; 230. inserting a ring; 231. a seal ring;

300. an oil return pump; 310. a binding post;

400. a second return oil pipe section;

500. a crankcase;

600. a pressure sensor;

700. an engine ECU controller.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

A pressurized return line according to an embodiment of the utility model is described below with reference to fig. 1, comprising: scavenge pump 300, first scavenge pipe section 200, and second scavenge pipe section 400. The first return pipe section 200 is connected to the oil inlet of the return pump 300, and the second return pipe section 400 is connected to the oil outlet of the return pump 300. The end of the first scavenge pipe section 200 facing away from scavenge pump 300 is adapted to be connected to the oil outlet of supercharger 100 and the end of the second scavenge pipe section 400 facing away from scavenge pump 300 is adapted to be connected to the oil return of crankcase 500. When the oil return pump 300 operates, lubricating oil in the supercharger 100 can be prompted to flow back to the oil pan, so that the oil is prevented from being retained in the supercharger 100, and the working reliability of the supercharger 100 is improved.

Optionally, a terminal 310 is disposed on the scavenging pump 300, and the terminal 310 of the scavenging pump 300 is adapted to be connected to the engine ECU controller 700. The operation of the scavenge pump 300 can be controlled by the engine ECU controller 700 to ensure that the pressure in the crankcase 500 is maintained within a set range, further improving the reliability of the operation of the supercharger 100. The engine ECU controller 700 may maintain the pressure in the crankcase 500 within a set range in various manners, for example, the start-stop time of the scavenge pump 300 is preset in the engine ECU controller 700, so that the scavenge pump 300 is started and stopped at regular time; for another example, engine ECU controller 700 controls the start and stop of scavenge pump 300 based on the operating parameters of supercharger 100.

Optionally, the charge return line further comprises a pressure sensor 600, which pressure sensor 600 may be arranged on the crankcase 500 or the second return pipe section 400 for collecting a pressure value in the crankcase 500 or in the second return pipe section 400. The pressure sensor 600 is electrically connected with the engine ECU controller 700, and after a pressure signal acquired by the pressure sensor 600 is fed back to the engine ECU controller 700, the engine ECU controller 700 can control the operation of the oil return pump 300 according to the pressure signal.

For example, the pressure threshold value at which the scavenge pump 300 starts to operate is set to 2.5kpa, when the pressure value in the crankcase 500 or the second scavenge pipe section 400, which is acquired by the pressure sensor 600, is lower than 2.5kpa, the engine ECU controller 700 controls the scavenge pump 300 to start, and when the scavenge pump 300 operates, a negative pressure is formed at an oil outlet position of the supercharger 100, so that the oil is forcibly pumped back to the oil pan, the supercharger 100 is prompted to scavenge oil, and the oil is prevented from being retained in the supercharger 100. As scavenge pump 300 is operated, the pressure in crankcase 500 may gradually drop and engine ECU controller 700 may control scavenge pump 300 to stop when pressure sensor 600 detects a pressure drop below 2.5kpa in crankcase 500 or in second scavenge section 400.

In one embodiment of the present invention, at least one of the first and second return pipe sections 200, 400 is provided with a mounting plate 210 at an end thereof, and the mounting plate 210 is provided with a threaded hole 211. The mounting plate 210 is perpendicular to the center line of the first oil return pipe section 200 or the second oil return pipe section 400, the mounting plate 210 is connected with the first oil return pipe section 200 or the second oil return pipe section 400 in a welding manner, or the mounting plate 210 and the first oil return pipe section 200 or the second oil return pipe section 400 are in an integrally formed structure.

Optionally, the mounting plate 210 is an elliptical plate, and the center of the mounting plate 210 is located on the extended path of the centerline of the first return pipe section 200 or the second return pipe section 400. The two threaded holes 211 are respectively arranged at two sides of the first oil return pipe section 200 or the second oil return pipe section 400.

Optionally, the first return oil pipe section 200 and the second return oil pipe section 400 are both provided with a mounting plate 210, and both ends of the first return oil pipe section 200 and the second return oil pipe section 400 are both provided with a mounting plate 210. The installation plate 210 facilitates connection and fixation, and is useful for enhancing sealing performance.

As shown in fig. 2, in one embodiment of the present invention, a gasket 220 is disposed on the mounting plate 210. For convenience of description, the mounting plate 210 of the first return pipe section 200 will be described as an example. The sealing gasket 220 is located on one side, away from the first oil return pipe section 200, of the mounting plate 210, the sealing gasket 220 can be made of an elastic material, when the first oil return pipe section 200 is connected with the supercharger 100 through the mounting plate 210, the sealing gasket 220 is located between the mounting plate 210 and an engine oil outlet of the supercharger 100, and the sealing gasket 220 generates slight elastic deformation after being locked through bolts. The sealing gasket 220 can increase the sealing performance of the connecting position, and avoid oil leakage, air leakage and the like.

Alternatively, the mounting plate 210 is provided with a mounting groove 212, and one side of the gasket 220 is inserted into the mounting groove 212. The mounting groove 212 not only can play a positioning role for the sealing gasket 220, prevent the sealing gasket 220 from deviating in the mounting process, but also can further enhance the sealing effect.

Optionally, the installation groove 212 is an annular groove, the end of the first return oil pipe section 200 or the second return oil pipe section 400 is located inside the installation groove 212, and after the sealing gasket 220 is installed in the installation groove 212, a seal can be formed in each direction of the port of the first return oil pipe section 200 or the second return oil pipe section 400. The mounting groove 212 is coaxially provided with more than two, and the sealing gasket 220 is correspondingly provided with more than two with the mounting groove 212, thereby forming multi-stage sealing, achieving better sealing effect, and preventing the phenomena of liquid leakage and air leakage caused by the failure of the single sealing gasket 220.

Further, as shown in fig. 3, an end of at least one of the first return oil pipe section 200 and the second return oil pipe section 400 is provided with a plug-in ring 230, and the plug-in ring 230 is a circular ring structure formed by extending the first return oil pipe section 200 or the second return oil pipe section 400 to a side of the mounting plate 210 facing away from the first return oil pipe section 200 or the second return oil pipe section 400. The insert ring 230 is suitable for being inserted into an oil outlet of the supercharger 100 or an oil return opening of the crankcase 500, the insert ring 230 is positioned on the inner side of the sealing gasket 220, and the insert ring 230 can be matched with the oil return opening of the supercharger 100 or the crankcase 500, so that the sealing performance is further improved. The oil outlet of the supercharger 100 and the oil return port of the crankcase 500 may be provided with a stepped opening structure, so that the insert ring 230 can be hidden inside, and the insert ring 230 is prevented from affecting the flow of the oil.

Optionally, a sealing groove is disposed on an outer wall of the insert ring 230, and a sealing ring 231 is disposed at the sealing groove. Further, more than two sealing grooves and sealing rings 231 are correspondingly arranged along the axial direction of the insert ring 230, so that a better sealing effect is achieved.

The utility model also provides a supercharging system, which comprises a supercharger 100 and any one of the supercharging oil return pipelines, wherein an engine oil outlet of the supercharger 100 is connected with the first oil return pipe section 200, and an oil return opening of the crankcase 500 is connected with the second oil return pipe section 400. When the scavenge pump 300 on the charge scavenge line is operating, oil in the supercharger 100 can be caused to flow back to the crankcase 500 and into the oil pan through the crankcase 500.

The utility model also provides a vehicle comprising a charge-back oil line according to any one of the above or a charge-up system as described above.

The pressurized oil return pipeline, the pressurization system and the vehicle provided by the embodiment of the utility model can avoid the retention of engine oil in the supercharger 100, prevent the abnormal rise, even carbonization or oil leakage of a sealing ring caused by the abnormal temperature rise of the engine oil at the floating bearing of the supercharger 100 in serious conditions, and are beneficial to improving the working reliability of the supercharger 100. Moreover, because the scavenge pump 300 is connected to the booster pump and the crankcase 500 via the first scavenge pipe section 200 and the second scavenge pipe section 400, the scavenge pump 300 can be prevented from being affected by the high temperature of the supercharger 100 or the crankcase 500, and the scavenge pump 300 can be more conveniently mounted.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A pressurized return line, comprising:

an oil return pump;

one end of the first oil return pipe section is connected with an oil inlet of the oil return pump, and the other end of the first oil return pipe section is suitable for being connected with an engine oil outlet of the supercharger;

and one end of the second oil return pipe section is connected with an oil outlet of the oil return pump, and the other end of the second oil return pipe section is suitable for being connected with an oil return port of the crankcase.

2. The charge-up oil return line according to claim 1, wherein positive and negative terminals are provided on the oil return pump, and the positive and negative terminals are adapted to be connected to an engine ECU controller.

3. The charge-return line of claim 2, further comprising a pressure sensor connected to said engine ECU controller.

4. A charge-return line according to claim 1, characterized in that the end of the first return pipe section and/or the second return pipe section is provided with a mounting plate, which mounting plate is provided with a threaded hole.

5. A charge-return line according to claim 4, characterized in that the mounting plate is provided with a sealing gasket.

6. The charge-return line of claim 5, wherein the mounting plate is provided with a mounting groove, and one side of the gasket is inserted into the mounting groove.

7. The pressurized oil return pipeline according to claim 6, wherein the mounting groove is an annular groove, more than two mounting grooves are coaxially arranged, and more than two sealing gaskets are arranged corresponding to the mounting grooves.

8. A charge-return line according to claim 5, 6 or 7, characterized in that the end of the first and/or second return pipe section is provided with an insert ring adapted to be inserted into the oil outlet of the supercharger or the oil return opening of the crankcase, said insert ring being located inside the gasket.

9. A supercharging system, comprising: a supercharger and a supercharging return line according to any of claims 1 to 8, the oil outlet of the supercharger being connected to the first return oil pipe section and the oil return opening of the crankcase being connected to the second return oil pipe section.

10. A vehicle comprising a charge-back line according to any of claims 1-8 or a charging system according to claim 9.

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