CN214404327U - Variable compression ratio mechanism lubricating structure - Google Patents
Variable compression ratio mechanism lubricating structure Download PDFInfo
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- CN214404327U CN214404327U CN202023336284.1U CN202023336284U CN214404327U CN 214404327 U CN214404327 U CN 214404327U CN 202023336284 U CN202023336284 U CN 202023336284U CN 214404327 U CN214404327 U CN 214404327U
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Abstract
The utility model provides a variable compression ratio mechanism lubricating structure, including the main oil duct of locating in the bent axle, locate the adjusting link lubrication oil duct in the adjusting link, and constitute the main oil duct with the intercommunication structure of intercommunication between the adjusting link lubrication oil duct, the intercommunication structure is including radially running through the connecting rod journal of bent axle and with the intercommunication oil duct that the main oil duct links to each other, and the ring connecting rod journal circumference is located on the adjusting link with the intercommunication oil groove that the adjusting link lubrication oil duct links to each other, the intercommunication oil groove correspond to the intercommunication oil duct is arranged, and along with the connecting rod journal for the rotation of adjusting link, the intercommunication oil duct keep at least one end with the intercommunication oil groove is linked together. The utility model discloses a sustainable fuel feeding of variable compression ratio mechanism lubricating structure is in order to form continuous pressure oil film, and can improve lubricated effect.
Description
Technical Field
The utility model relates to a variable compression ratio engine technical field, in particular to variable compression ratio mechanism lubricating structure.
Background
The engine faces different working conditions when working, if the same compression ratio is adopted under various working conditions, the defects of low fuel efficiency, poor economy and high emission are inevitably caused, and the variable compression ratio technology is developed to overcome the defects of a single compression ratio. Among various types of variable compression ratio mechanisms, a multi-link variable compression ratio mechanism, which employs an eccentric shaft and a multi-link mechanism to cooperate with each other so as to be driven by the multi-link mechanism when the eccentric shaft is driven to rotate, thereby realizing the change of the top dead center of an engine piston, has become the research and development direction of many vehicle enterprises.
In the multi-link type variable compression ratio mechanism, the links are generally rotatably connected by the link pins, and the conventional multi-link structure generally employs a splash lubrication or pressure lubrication method to lubricate the rotatably connected portions of the links. The existing splash lubrication mode has the problem of unstable oil supply amount, the dry grinding condition of components is easy to occur, the existing pressure lubrication mode adopts intermittent pressure oil supply, a continuous pressure oil film cannot be formed, and the lubrication effect is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a variable compression ratio mechanism lubrication structure, which can continuously supply oil, form a continuous pressure oil film, and improve lubrication effect.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a variable compression ratio mechanism lubricating structure comprises a main oil duct arranged in a crankshaft, an adjusting connecting rod lubricating oil duct arranged in an adjusting connecting rod and a communicating structure forming communication between the main oil duct and the adjusting connecting rod lubricating oil duct, wherein the communicating structure comprises a communicating oil duct radially penetrating through a connecting rod journal of the crankshaft and connected with the main oil duct and a communicating oil groove circumferentially arranged on the adjusting connecting rod and connected with the adjusting connecting rod lubricating oil duct, the communicating oil groove is arranged corresponding to the communicating oil duct and rotates relative to the adjusting connecting rod along with the connecting rod journal, and at least one end of the communicating oil duct is communicated with the communicating oil groove.
Further, the main oil passage is located at the center of the connecting rod journal, the communicating oil passage and the main oil passage are intersected at the center of the connecting rod journal to form connection therebetween, and the circumferential angle of the communicating oil groove is 180 degrees.
Furthermore, a bearing bush is fixedly arranged on the adjusting connecting rod, a communicating oil groove is formed in the bearing bush, and a communicating hole for communicating the communicating oil groove with the lubricating oil channel of the adjusting connecting rod is formed in the bearing bush.
Furthermore, the lubricating oil channel of the adjusting connecting rod comprises a first lubricating oil channel and a second lubricating oil channel which are respectively connected with connecting rod connecting holes at two ends of the adjusting connecting rod, the communicating holes are two in number and are connected with the communicating oil grooves, and the communicating holes are respectively connected with the first lubricating oil channel and the second lubricating oil channel.
Furthermore, the adjusting connecting rod is provided with an upper connecting rod and a lower connecting rod which are buckled and connected to form a mounting hole, the two connecting rod connecting holes are respectively formed in the upper connecting rod and the lower connecting rod, the bearing bush is located in the mounting hole, the first lubricating oil channel comprises a connecting rod oil groove formed in the inner wall of the mounting hole and an upper connecting rod oil channel formed in the upper connecting rod and connected with one end of the connecting rod oil groove, the upper connecting rod oil channel is communicated to the connecting rod connecting hole formed in the upper connecting rod, and the connecting rod oil groove is connected with one of the communicating holes.
Further, the connecting rod oil groove is located the axial middle part of mounting hole, just go up the connecting rod oil duct through locating edge on the mounting hole inner wall the horizontal oil duct that the mounting hole axial was arranged with the connecting rod oil groove links to each other.
Further, the second lubricating oil channel comprises a lower connecting rod oil channel arranged in the lower connecting rod, one end of the lower connecting rod oil channel is connected with the other communicating hole, and the other end of the lower connecting rod oil channel is communicated into the connecting rod connecting hole on the lower connecting rod.
Furthermore, the bearing bush comprises an upper bearing bush and a lower bearing bush which are oppositely buckled together, the upper bearing bush is attached to the upper connecting rod, the lower bearing bush is attached to the lower connecting rod, the communicating oil groove and the communicating holes are located in the lower bearing bush, and the connecting rod oil groove extends from the lower connecting rod to the upper connecting rod and is connected with the upper connecting rod oil channel.
Furthermore, the first lubricating oil channel and the second lubricating oil channel are communicated with the end parts of the corresponding connecting rod connecting holes, connecting rod pins are inserted into the connecting rod connecting holes, a connecting rod pin lubricating oil channel with one end connected with the first lubricating oil channel or the second lubricating oil channel is arranged on each connecting rod pin, and the other end of the connecting rod pin lubricating oil channel is communicated to the outside of the connecting rod pin in the axial middle part of the connecting rod pin.
Furthermore, the connecting rod pin is provided with a lightening hole which axially penetrates through the connecting rod pin and a through hole which radially penetrates through the connecting rod pin, one end of the through hole is opened at the end part of the connecting rod pin, the other end of the through hole is opened at the middle part of the connecting rod pin and is intersected with the lightening hole, an oil pipe is fixedly inserted into the through hole, and due to the arrangement of the oil pipe, a lubricating oil channel of the connecting rod pin is formed in the through hole.
Compared with the prior art, the utility model discloses following advantage has:
variable compression ratio mechanism lubricating structure, utilize the setting of connectivity structure, when the connecting rod axle journal rotates for adjusting the connecting rod for the intercommunication oil duct keeps at least one end and communicates the oil groove to be linked together, can last the fuel feeding to adjusting the connecting rod lubricating oil duct through the main oil duct from this, in order can rotate at the connecting rod and connect the position and form continuous pressure oil film, and can improve lubricated effect, ensure variable compression ratio mechanism's normal work.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural view of a variable compression ratio mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an adjusting link according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bearing bush according to an embodiment of the present invention;
fig. 4 is a schematic view of a communication structure according to an embodiment of the present invention;
fig. 5 is a schematic view of the communication structure according to the embodiment of the present invention in another state;
fig. 6 is a schematic structural diagram of a first lubricating oil duct according to an embodiment of the present invention;
fig. 7 is a schematic position diagram of a cross oil gallery according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a second lubricating oil duct according to an embodiment of the present invention;
fig. 9 is a schematic structural view of an upper connecting rod pin according to an embodiment of the present invention;
fig. 10 is a schematic structural view of another form of the upper link pin according to the embodiment of the present invention;
description of reference numerals:
1. a piston; 2. a connecting rod journal; 3. an execution connecting rod; 4. adjusting the connecting rod; 5. a drive link; 6. an eccentric shaft; 7. an upper link pin; 8. a lower link pin; 9. an upper bearing bush; 10. a lower bearing bush; 11. a bushing;
201. a main oil gallery; 202. the oil duct is communicated;
41. an upper link; 411. an upper connecting rod connecting hole; 412. an upper mounting half-hole; 413. an upper connecting rod oil groove; 414. a cross oil passage; 415. an upper connecting rod oil passage;
42. a lower connecting rod; 421. a lower connecting rod connecting hole; 422. a lower mounting half-hole; 423. a lower connecting rod oil groove; 424. a lower connecting rod oil passage;
701. a connecting rod pin lubrication oil passage; 702. lightening holes; 703. mounting holes; 704. an oil pipe;
1001. the oil groove is communicated; 1002. a first communication hole; 1003. a second communication hole.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present embodiment relates to a lubrication structure of a variable compression ratio mechanism, wherein, firstly, for the variable compression ratio mechanism of the present embodiment, it is a multi-link type variable compression ratio mechanism that employs an eccentric shaft 6 to cooperate with a multi-link mechanism so as to be driven by the multi-link mechanism when the eccentric shaft 6 is driven to rotate, thereby realizing the variation of the top dead center of the piston 1.
As shown in fig. 1, the multi-link type variable compression ratio mechanism of the present embodiment is constructed by including a piston 1, an actuating connecting rod 3 having one end hinge-connected to the piston 1, a driving connecting rod 5 having one end rotatably connected to an eccentric wheel on an eccentric shaft 6, and an adjusting connecting rod 4 rotatably provided on a crankshaft and having both ends rotatably connected to the actuating connecting rod 3 and the driving connecting rod 5, respectively. The adjusting connecting rod 4 is rotatably mounted on a connecting rod journal 2 of the crankshaft, and the actuating connecting rod 3 and the adjusting connecting rod 4 of the driving connecting rod 5 are rotatably connected through an upper connecting rod pin 7 and a lower connecting rod pin 8 respectively. The two end parts of each connecting rod pin are assembled with the adjusting connecting rod 4 in an interference way, and the middle part of each connecting rod pin is assembled with the executing connecting rod 3 or the driving connecting rod 5 in a clearance way.
The eccentric shaft 6 is generally driven by a motor, a speed reducer is arranged between the eccentric shaft and the motor, when the variable compression ratio mechanism works, an engine ECU sends a control instruction to the motor according to the current engine load, and the motor rotates to drive the eccentric shaft 6 to rotate through the speed reducer. The rotation of the eccentric shaft 6 is transmitted via the drive connecting rod 5, the adjusting connecting rod 4 and the actuating connecting rod 2, so that the top dead center of the piston 1 is changed, thereby achieving the adjustment of the engine compression ratio.
Based on the above description of the variable compression ratio mechanism, and as shown in fig. 2, the variable compression ratio mechanism lubricating structure of the present embodiment includes the main oil gallery 201 provided in the crankshaft, the adjusting link lubricating oil gallery provided in the adjusting link 4, and a communication structure that constitutes communication between the main oil gallery 201 and the adjusting link lubricating oil gallery.
The communication structure specifically comprises a communication oil channel 202 which radially penetrates through the connecting rod journal 2 and is connected with the main oil channel 201, and a communication oil groove 1001 which is circumferentially arranged around the connecting rod journal 2 and is connected with the lubricating oil channel of the adjusting connecting rod. The communication oil groove 1001 is also arranged corresponding to the communication oil passage 202, and the communication oil passage 202 of the present embodiment is also such that at least one end can be kept in communication with the communication oil groove 1001 as the connecting rod journal 2 rotates relative to the adjusting connecting rod 4.
Specifically, a bearing bush is fixedly disposed in the adjusting link 4, and the communicating oil groove 1001 is disposed on the bearing bush. However, it should be noted that, in addition to being provided on the bush, when the bush is not provided in the adjusting link 4, the communicating oil groove 1001 may be directly provided on the adjusting link 4, and the arrangement thereof on the adjusting link 4 may be adjusted by structural adaptation as the case may be with reference to the description given herein below.
In this embodiment, as a preferred embodiment, the communicating oil groove 1001 is provided on the bearing shell as shown in fig. 3, which will be further described below. In addition, as a preferred embodiment, the main oil gallery 201 of the present embodiment is located at the center of the connecting rod journal 2, and the communication oil gallery 202, that is, the main oil gallery 201 and the connecting rod journal 2 meet at the center of the connecting rod journal to form a connection therebetween. Meanwhile, the circumferential angle of the communicating oil groove 1001 of the present embodiment is also set to 180 °.
Thus, as shown in fig. 4 and 5, when the connecting rod journal 2 rotates with the crankshaft relative to the adjusting connecting rod 4, that is, relative to the bearing shell, the communicating oil passage 202 communicates with both ends of the communicating oil groove 1001 in one-to-one correspondence, except that one end shown in fig. 4 communicates with the communicating oil groove 1001, and in the latter communicating case, the communicating section between the communicating oil passage 202 and the communicating oil groove 1001 is substantially the same as that shown in fig. 4. That is, at any time, the communication oil passage 202 can be connected to the communication oil groove 1001, so that at least one end of the communication oil passage 202 communicates with the communication oil groove 1001.
In the present embodiment, on the basis that the communicating oil groove 1001 is provided in the bearing shell, a communicating hole for connecting the communicating oil groove 1001 and the adjusting link lubrication oil passage in the adjusting link 4 is also provided in the bearing shell. In addition, in this embodiment, the lubricating oil passage of the adjusting link specifically includes a first lubricating oil passage and a second lubricating oil passage respectively connected to link connecting holes at two ends of the adjusting link 4, and the two communicating holes on the bearing bush are also connected to the communicating oil groove 1001, and the two communicating holes are respectively connected to the first lubricating oil passage and the second lubricating oil passage.
As a general embodiment of the multi-link type variable compression ratio mechanism, the adjusting link 4 of the present embodiment also has an upper link 41 and a lower link 42 that are snap-coupled to form the mounting holes, which are respectively provided on the upper link 41 and the lower link 42, and for convenience of description, the two link coupling holes are respectively referred to as an upper link coupling hole 411 and a lower link coupling hole 421. The bearing bush is located in the mounting hole, and the mounting hole is formed by engaging and enclosing an upper mounting half-hole 412 and a lower mounting half-hole 422 respectively formed on the upper and lower connecting rods.
Meanwhile, as a preferred example, the bearing bush of the present embodiment also specifically includes an upper bearing bush 9 and a lower bearing bush 10 which are relatively fastened together, the upper bearing bush 9 is located in the upper mounting half hole 412 and is attached to the upper connecting rod 41, and the lower bearing bush 10 is located in the lower mounting half hole 422 and is attached to the lower connecting rod 42. The communicating oil groove 1001 and the communicating holes are formed in the lower shell 10.
As shown in fig. 6, as an exemplary structure, the first lubricating oil passage of the present embodiment includes a link oil groove provided on an inner wall of the mounting hole, and an upper link oil passage 415 provided in the upper link 41 to be connected to one end of the link oil groove. The link oil groove is formed by extending the lower link 42 to the upper link 41, and specifically by connecting in series the upper link oil groove 413 and the lower link oil groove 423 respectively disposed on the inner walls of the upper mounting half-hole 412 and the lower mounting half-hole 422. One end of the upper link oil passage 415 is connected to the upper link oil groove 413, and the other end thereof is communicated to an upper link connection hole 411 formed in the upper link 41 for lubricating the rotation connection portion of the actuating link 3 and the adjusting link 4.
In this embodiment, for convenience of description, the two communication ports are also referred to as a first communication hole 1002 and a second communication hole 1003, respectively, and the lower link oil groove 423 in the integral link oil groove is connected to the first communication hole 1002. In addition, the rod oil groove of the present embodiment, which is composed of the upper rod oil groove 413 and the lower rod oil groove 423, is also located at the middle portion in the axial direction of the mounting hole as shown in fig. 6, and the upper rod oil passage 415 is connected to the upper rod oil groove 413 through the cross oil passage 414 provided on the inner wall of the upper mounting half hole 412 and arranged in the axial direction of the mounting hole.
Thus, the communication oil passage 202, the communication oil groove 1001, the first communication hole 1002, the link oil groove, and the cross oil passage 414 and the upper link oil passage 415 constitute a lubricant oil flow path for supplying oil from the main oil passage 201 in the crankshaft to the rotation connection portion of the actuator link 3 for pressure lubrication. Also as shown in fig. 7, it should be noted that in this embodiment, the cross oil passage 414 in the upper link 41 is arranged to be outside the main load bearing area of the upper link 41 to avoid affecting the structural strength of the upper link 41.
As shown in fig. 8, the second lubricating oil passage of the present embodiment specifically includes a lower link oil passage 424 provided in the lower link 42, and the lower link oil passage 424 has one end connected to the second communication hole 1003 and the other end communicated to a lower link connection hole 421 provided in the lower link 4 so as to be used for pressure lubrication of the rotatably connected portion of the drive link 5.
At this time, the communication oil passage 202, the communication oil groove 1001, the second communication hole 1003, and the lower link oil passage 424 form a lubricant oil flow path for supplying oil from the main oil passage 201 of the crankshaft to a rotation connection portion of the drive link 5 for pressure lubrication.
In the present embodiment, since each link connecting hole of the adjusting link 4 is formed on the link arm of the upper link 41 and the lower link 42, referring to fig. 6 again, the first lubricating oil passage and the second lubricating oil passage in the adjusting link 4 are specifically end portions that are communicated with the corresponding link connecting holes, taking the link pin 7 as an example. At this time, a link pin lubricating oil passage 701 having one end connected to the first lubricating oil passage or the second lubricating oil passage is provided on the upper link pin 7 and the lower link pin 8, and the other end of the link pin lubricating oil passage 701 penetrates outside the link pin at the middle in the axial direction of the link pin, so that the lubricating oil can finally enter the rotation connection portion of the actuating link 3 or the driving link 5 in clearance fit.
In order to prolong the service life of the mechanism, a bush 11 is generally arranged at the connecting part of the actuating link 3 and the driving link 5 with the adjusting link 4, and lubricating oil sprayed out through a link pin lubricating oil passage 701 forms an oil film between the link pin and the bush 11 so as to achieve the lubricating effect.
Note that, each link pin of the present embodiment may have a structure like the upper link pin 7 shown in fig. 6. Alternatively, as a modification, this embodiment may be provided with a lightening hole 702 penetrating in the axial direction and a through hole 703 penetrating in the radial direction on the link pin, as shown in fig. 9 and 10, also taking the link pin 7 as an example. One end of the through hole 703 is opened at the end of the link pin, the other end is opened at the middle of the link pin, and it is also intersected with the lightening hole 702, and an oil pipe 704 is also inserted and fixed in the through hole 703.
The link pin lubricating oil passage 701 is formed in the through hole 703 by the arrangement of the oil pipe 704 in the through hole. In addition, the connecting rod pin structure with the lightening holes 702 and the through holes 703 can greatly reduce the mass of the connecting rod pin structure, thereby having good lightening effect.
In addition, as still shown in fig. 9, as an exemplary structure, the openings at both ends of the through hole 703 may be designed in a stepped shape, and after the oil pipe 704 is inserted into the through hole 703 in a clearance fit state, both ends of the oil pipe 704 are reworked so that both ends thereof are radially expanded to be closely adhered to both ends of the through hole 703. At this time, stepped through hole 703 and both ends of oil pipe 704 also enable positioning of oil pipe 704 in through hole 703.
As another exemplary structure, referring to fig. 10 again, in this embodiment, the cross-sectional apertures of the through hole 703 may be the same, and after the oil pipe 704 is inserted into the through hole 703 in a clearance fit state, pressure is applied to both ends of the oil pipe 704, or high-pressure liquid is introduced. This not only allows oil pipe 704 to be closely attached to the inner wall of through hole 703, but also allows oil pipe 704 to bulge out of the portion of lightening hole 702, thereby also positioning oil pipe 704 in through hole 703.
The variable compression ratio mechanism lubricating structure of the present embodiment utilizes the arrangement of the communicating structure to keep at least one end of the communicating oil passage 202 in communication with the communicating oil groove 1001 when the connecting rod journal 2 rotates relative to the adjusting connecting rod 4, so that oil can be continuously supplied to the adjusting connecting rod lubricating oil passage through the main oil passage 201, a continuous pressure oil film can be formed at the connecting rod rotation connection part, the lubricating effect can be improved, and the normal operation of the variable compression ratio mechanism can be ensured.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a variable compression ratio mechanism lubricating structure, is including main oil gallery (201) of locating in the bent axle, locate the lubricated oil duct of regulation connecting rod in adjusting connecting rod (4), and constitute main oil gallery (201) with the intercommunication structure of intercommunication between the lubricated oil duct of regulation connecting rod, its characterized in that: the communicating structure comprises a communicating oil duct (202) which radially penetrates through a connecting rod journal (2) of the crankshaft and is connected with the main oil duct (201), and a communicating oil groove (1001) which is formed in the adjusting connecting rod (4) in a circumferential mode and is connected with a lubricating oil duct of the adjusting connecting rod, wherein the communicating oil groove (1001) is arranged corresponding to the communicating oil duct (202), and at least one end of the communicating oil duct (202) is communicated with the communicating oil groove (1001) along with the rotation of the connecting rod journal (2) relative to the adjusting connecting rod (4).
2. The variable compression ratio mechanism lubricating structure according to claim 1, characterized in that: the main oil gallery (201) is located at the center of the connecting rod journal (2), the communicating oil gallery (202) and the main oil gallery (201) are intersected at the center of the connecting rod journal (2) to form connection between the main oil gallery and the connecting rod journal, and the circumferential angle of the communicating oil groove (1001) is 180 degrees.
3. The variable compression ratio mechanism lubricating structure according to claim 2, characterized in that: and a bearing bush is fixedly arranged on the adjusting connecting rod (4), a communicating oil groove (1001) is arranged on the bearing bush, and a communicating hole for communicating the communicating oil groove (1001) with the lubricating oil channel of the adjusting connecting rod is arranged on the bearing bush.
4. The variable compression ratio mechanism lubricating structure according to claim 3, characterized in that: the lubricating oil channel of the adjusting connecting rod comprises a first lubricating oil channel and a second lubricating oil channel which are respectively connected with connecting rod connecting holes at two ends of the adjusting connecting rod (4), the communicating holes are two in number and are connected with the communicating oil groove (1001), and the communicating holes are respectively connected with the first lubricating oil channel and the second lubricating oil channel.
5. The variable compression ratio mechanism lubricating structure according to claim 4, characterized in that: the adjusting connecting rod (4) is provided with an upper connecting rod (41) and a lower connecting rod (42) which are buckled and connected to form a mounting hole, the two connecting rod connecting holes are respectively formed in the upper connecting rod (41) and the lower connecting rod (42), the bearing bush is positioned in the mounting hole, the first lubricating oil channel comprises a connecting rod oil groove arranged on the inner wall of the mounting hole and an upper connecting rod oil channel (415) arranged in the upper connecting rod (41) and connected with one end of the connecting rod oil groove, the upper connecting rod oil channel (415) is communicated to the connecting rod connecting hole in the upper connecting rod (41), and the connecting rod oil groove is connected with one of the communicating holes.
6. The variable compression ratio mechanism lubricating structure according to claim 5, characterized in that: the connecting rod oil groove is located in the axial middle of the mounting hole, and the upper connecting rod oil passage (415) is connected with the connecting rod oil groove through a transverse oil passage (414) which is arranged on the inner wall of the mounting hole along the axial direction of the mounting hole.
7. The variable compression ratio mechanism lubricating structure according to claim 5, characterized in that: the second lubricating oil channel comprises a lower connecting rod oil channel (424) arranged in the lower connecting rod (42), one end of the lower connecting rod oil channel (424) is connected with the other communication hole, and the other end of the lower connecting rod oil channel is communicated to the connecting rod connecting hole in the lower connecting rod (42).
8. The variable compression ratio mechanism lubricating structure according to claim 5, characterized in that: the bearing bush comprises an upper bearing bush (9) and a lower bearing bush (10) which are oppositely buckled together, the upper bearing bush (9) is attached to the upper connecting rod (41), the lower bearing bush (10) is attached to the lower connecting rod (42), the communicating oil grooves (1001) and the communicating holes are located in the lower bearing bush (10), and the connecting rod oil grooves extend from the lower connecting rod (42) to the upper connecting rod (41) and are connected with the upper connecting rod oil duct (415).
9. The variable compression ratio mechanism lubricating structure according to any one of claims 4 to 8, characterized in that: the first lubricating oil channel and the second lubricating oil channel are communicated with the end parts of the corresponding connecting rod connecting holes, a connecting rod pin is inserted into each connecting rod connecting hole, a connecting rod pin lubricating oil channel (701) with one end connected with the first lubricating oil channel or the second lubricating oil channel is arranged on each connecting rod pin, and the other end of the connecting rod pin lubricating oil channel (701) is communicated to the outside of the connecting rod pin in the axial middle part of the connecting rod pin.
10. The variable compression ratio mechanism lubricating structure according to claim 9, characterized in that: the connecting rod pin is provided with a lightening hole (702) which axially penetrates through the connecting rod pin and a through hole (703) which radially penetrates through the connecting rod pin, one end of the through hole (703) is opened at the end part of the connecting rod pin, the other end of the through hole is opened at the middle part of the connecting rod pin and is intersected with the lightening hole (702), an oil pipe (704) is fixedly inserted in the through hole (703), and due to the arrangement of the oil pipe (704), a connecting rod pin lubricating oil channel (701) is formed in the through hole (703).
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| CN202023336284.1U CN214404327U (en) | 2020-12-31 | 2020-12-31 | Variable compression ratio mechanism lubricating structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023336284.1U CN214404327U (en) | 2020-12-31 | 2020-12-31 | Variable compression ratio mechanism lubricating structure |
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| CN214404327U true CN214404327U (en) | 2021-10-15 |
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| CN202023336284.1U Active CN214404327U (en) | 2020-12-31 | 2020-12-31 | Variable compression ratio mechanism lubricating structure |
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