CN108979779B - Engine lubricating oil circulation system - Google Patents
Engine lubricating oil circulation system Download PDFInfo
- Publication number
- CN108979779B CN108979779B CN201810923519.5A CN201810923519A CN108979779B CN 108979779 B CN108979779 B CN 108979779B CN 201810923519 A CN201810923519 A CN 201810923519A CN 108979779 B CN108979779 B CN 108979779B
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- oil
- balance shaft
- crankcase
- balance
- partition plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/04—Pressure lubrication using pressure in working cylinder or crankcase to operate lubricant feeding devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
Abstract
The invention discloses an engine lubricating oil circulating system, which comprises a crankcase and a crankshaft arranged in the crankcase; a balance shaft is arranged below the crankshaft in parallel, one side of the balance shaft in the horizontal radial direction is close to the box wall of the crankcase, a partition plate formed by upward extending the bottom of the crankcase is arranged at the other side of the balance shaft at intervals, the partition plate extends along the length direction of the balance shaft and forms a balance shaft cavity for the rotation of the balance shaft with the box wall of the crankcase, and the partition plate is higher than the maximum liquid level of engine oil in a shutdown state; and an oil inlet of the oil pumping device is connected to the bottom of the balance shaft cavity, and an oil outlet of the oil pumping device is connected to the inside of a crankcase body outside the balance shaft cavity. The engine oil stirring device has the advantages of being reasonable in structural design, capable of weakening the stirring of the balance shaft to engine oil, avoiding too fast increase of the fluidity of the engine oil, being beneficial to maintaining the lubricating effect of the engine oil, prolonging the service life of an engine and the like.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine lubricating oil circulating system.
Background
The balance shaft technology is widely applied to the motorcycle engine, has a simple and practical structure, and can effectively reduce the vibration of the whole motorcycle and improve the driving comfort. 253FMK is a parallel double-cylinder engine produced by my company, is not provided with a balance shaft, and is improved in structure in order to make a driver more comfortable, and a balance shaft mechanism is added to achieve the aim of reducing vibration.
Because the assembly space of the motorcycle is smaller, in order to make the engine structure more compact, consider utilizing the space below the crankshaft, arrange the balance shaft below the crankshaft, however, such arrangement makes the balance shaft position lower, the shaft body of the balance shaft is mostly immersed in the engine oil, when the engine runs, the balance shaft stirs the engine oil constantly, not only increases the friction loss and reduces the power, but also makes the mobility of the engine oil increase, thus lead to the temperature rise of the engine oil, reduce the lubricating function of the engine oil, finally influence the life-span of the engine.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a structural design is reasonable, can weaken the stirring of balanced axle to machine oil, avoids machine oil mobility to increase too fast, is favorable to keeping the lubricated effect of machine oil and improves engine oil circulation system of engine life-span.
In order to solve the technical problems, the invention adopts the following technical scheme:
an engine lubricating oil circulation system comprises a crankcase and a crankshaft arranged in the crankcase; the engine oil balancing device is characterized in that a rotatable balancing shaft is arranged below the crankshaft in parallel, one side of the balancing shaft in the horizontal radial direction is close to the wall of the crankcase, a partition plate formed by upward extending the bottom of the crankcase is arranged on the other side of the balancing shaft at intervals, the partition plate extends along the length direction of the balancing shaft and forms a balancing shaft cavity for the balancing shaft to rotate with the wall of the crankcase, and the partition plate is higher than the maximum liquid level of engine oil in a shutdown state; and an oil inlet of the oil pumping device is connected to the bottom of the balance shaft cavity, and an oil outlet of the oil pumping device is connected to the inside of a crankcase body outside the balance shaft cavity.
Adopt above-mentioned structure, through set up the baffle in the crankcase, form the balance shaft cavity that supplies the balance shaft gyration, thereby separate the lubricating oil in the balance shaft cavity alone, recycle the interior lubricating oil pump of pump oil device with the balance shaft cavity to the box outside the balance shaft cavity, make the interior lubricating oil liquid level of balance shaft cavity reduce, just can avoid the whole infiltration of balance shaft in lubricating oil, reduce the stirring of balance shaft to lubricating oil, thereby can prevent that the mobility of lubricating oil from increasing too fast, guarantee that lubricating oil has better viscosity, keep the lubrication effect of lubricating oil, the life of engine is prolonged. Lubricating oil lubricates parts in the crankcase through the lubricating system, and lubricating oil of the lubricating crankshaft can drip into the balance shaft cavity, so that partial lubricating oil can be reserved in the balance shaft cavity all the time.
Further, the oil pumping device comprises a disc-shaped oil pumping rotor, the oil pumping rotor is coaxially and fixedly installed at one end of the balance shaft, a circular groove matched with the oil pumping rotor is formed in the wall of the crankcase at the end, and the oil pumping rotor is rotatably installed in the circular groove to form a pump body structure; the oil pumping rotor is provided with an oil inlet communicated with the balance shaft cavity, and the circular groove is internally provided with an oil passage communicated with a crankcase outside the balance shaft cavity.
When the engine works, the balance shaft also starts to rotate to drive the oil pumping rotor to rotate, so that the lubricating oil in the cavity of the balance shaft is pumped into the crankcase body outside the cavity of the balance shaft. When the engine is stopped, the balance shaft stops rotating, and the oil pumping rotor stops pumping oil accordingly. Like this, can realize the synchronous of pumping oil device and balance shaft and open and stop, need not additionally to set up controlling means and control the pumping oil device, stability is good, and the reliability is high.
Furthermore, one side of the oil pumping rotor, which faces the circular groove, is provided with a plurality of oil grooves which are uniformly distributed along the circumferential direction, one end of each oil groove in the circumferential direction of the oil pumping rotor is an oil inlet end with a larger width, the other end of each oil groove is an oil outlet end with a smaller width, and the direction of each oil inlet end is consistent with the direction of rotation of the balance shaft; the oil groove is positioned at the outer side edge of the oil pumping rotor in the radial direction and is integrally communicated with the outer circular surface of the oil pumping rotor; the oil inlet end of the oil groove is provided with an oil inlet which axially penetrates through the oil pumping rotor; the bottom of the circular groove in the vertical radial direction is provided with an oil passage communicated with a crankcase outside the cavity of the balance shaft.
By adopting the structure, the lubricating oil in the cavity of the balance shaft flows into the oil groove through the oil inlet, the oil groove rotates to the oil passage at the bottom of the circular groove along with the rotation of the oil pumping rotor along with the balance shaft, and the oil groove is communicated with the oil passage at the bottom of the circular groove because the oil groove is integrally communicated with the outer circular surface of the oil pumping rotor, and the lubricating oil in the oil groove can flow into the oil passage. And because the orientation of the oil inlet end is consistent with the steering of the balance shaft, namely the oil channel is communicated with the oil inlet end of the oil groove and then communicated with the oil outlet end of the oil groove, in the rotation process of the oil pumping rotor, the lubricating oil and the oil groove move relatively, namely the lubricating oil flows towards the oil outlet end of the oil groove relative to the oil pumping rotor, and the width of the oil outlet end of the oil groove is smaller than that of the oil inlet end, so that the lubricating oil in the oil groove enters the oil channel under the centrifugal force and the squeezing force of gradually reducing the width of the oil groove, and the oil pumping. Because the oil inlet communicates with balanced axle cavity all the time, and the volume of oil groove does not actually reduce, in case when the liquid level in the balanced axle cavity is close the lower extreme height of circular recess, the oil groove can't be filled completely to lubricating oil, and the pump oil effect weakens, nevertheless can play the effect of lubricating to the pump oil device simultaneously, prevents that the pump oil rotor from taking place dry grinding. Therefore, the purpose of reducing the liquid level height in the cavity of the balance shaft can be achieved, dry grinding damage of the oil pumping rotor caused by complete evacuation of lubricating oil in the cavity of the balance shaft can be avoided, and the improvement of the operation reliability and the service life are facilitated.
Furthermore, two ends of the balance shaft are arranged on the box wall of the crankcase through single-side belt oil seal bearings; the circular groove is located the single side area oil blanket bearing orientation one side in the crankcase, the pump oil rotor orientation one side of single side area oil blanket bearing is coaxial to be provided with and is annular bulge, the external diameter of bulge is less than the inner circle external diameter of single side area oil blanket bearing.
Further, the crankcase includes left crankcase and the right crankcase of mutual lock installation, the right-hand member of balance shaft passes right crankcase, and this end has set gradually balancing piece installation axial region and screw shaft from inside to outside, install balance shaft driven tooth and balancing piece from inside to outside on the balancing piece installation axial region in proper order, the thickness sum of balance shaft driven tooth and balancing piece is greater than the length of balancing piece installation axial region, the epaxial cover of screw is equipped with the balancing piece gasket to compress tightly through installing the epaxial lock clamp nut of screw the tip of balancing piece.
Further, the lower end of the partition plate is obliquely arranged towards the lower part of the balance shaft, and a first oil duct is arranged at the bottom of the partition plate; an auxiliary partition plate formed by upward extending of the bottom of the crankcase is further arranged on one side, away from the balance shaft, of the partition plate, and the upper end of the auxiliary partition plate is connected with the partition plate to form an oil suction cavity; the oil pumping device is an oil pump of an engine, a second oil duct and a third oil duct which are connected with the oil pump are arranged on the box wall at one end of the partition plate in the length direction, the second oil duct and the third oil duct are respectively arranged on two sides of the auxiliary partition plate, and the second oil duct is communicated with the oil suction cavity.
Therefore, the lubricating oil in the balance shaft cavity flows into the oil suction cavity through the first oil passage and is sucked into the oil pump from the second oil passage. And the height of the partition plate is higher, so that lubricating oil in other cavities can be organized to flow into the balance shaft cavity through the top of the partition plate, and the liquid level height in the balance shaft cavity can be reduced under the action of the engine oil pump.
In conclusion, the engine oil lubricating device has the advantages that the structural design is reasonable, the stirring of the balance shaft on the engine oil can be weakened, the too fast increase of the fluidity of the engine oil is avoided, the lubricating effect of the engine oil is kept, the service life of an engine is prolonged, and the like.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Fig. 2 is a schematic sectional structure view of fig. 1.
Fig. 3 is a schematic structural view of the oil pumping rotor of fig. 1.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a schematic structural view of embodiment 2.
Fig. 6 is a schematic structural view of a-a in fig. 5.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the specific implementation: as shown in fig. 1 to 6, an engine lubricating oil circulation system includes a crankcase 1 and a crankshaft installed in the crankcase 1; a rotatable balance shaft 2 is arranged below the crankshaft in parallel, one side of the balance shaft 2 in the horizontal radial direction is close to the box wall of the crankcase 1, a partition plate 3 formed by upward extending the bottom of the crankcase 1 is arranged at the other side of the balance shaft at intervals, the partition plate 3 extends along the length direction of the balance shaft 2 and forms a balance shaft chamber for the balance shaft 2 to rotate with the box wall of the crankcase 1, and the partition plate 3 is higher than the maximum liquid level of engine oil in a shutdown state; an oil pumping device 4 is further arranged on the crankcase 1, an oil inlet of the oil pumping device 4 is connected to the bottom of the balance shaft cavity, and an oil outlet of the oil pumping device 4 is connected to the inside of the crankcase body outside the balance shaft cavity.
Adopt above-mentioned structure, through set up the baffle in the crankcase, form the balance shaft cavity that supplies the balance shaft gyration, thereby separate the lubricating oil in the balance shaft cavity alone, recycle the interior lubricating oil pump of pump oil device with the balance shaft cavity to the box outside the balance shaft cavity, make the interior lubricating oil liquid level of balance shaft cavity reduce, just can avoid the whole infiltration of balance shaft in lubricating oil, reduce the stirring of balance shaft to lubricating oil, thereby can prevent that the mobility of lubricating oil from increasing too fast, guarantee that lubricating oil has better viscosity, keep the lubrication effect of lubricating oil, the life of engine is prolonged. Lubricating oil lubricates parts in the crankcase through the lubricating system, and lubricating oil of the lubricating crankshaft can drip into the balance shaft cavity, so that partial lubricating oil can be reserved in the balance shaft cavity all the time.
In implementation, the oil pumping device 4 includes a disk-shaped oil pumping rotor 41, the oil pumping rotor 41 is coaxially and fixedly installed at one end of the balance shaft 2, a circular groove matched with the oil pumping rotor 41 is formed in a wall of the crankcase 1 at the end, and the oil pumping rotor 41 is rotatably installed in the circular groove to form a pump body structure; the oil pumping rotor 41 is provided with an oil inlet communicated with the balance shaft cavity, and the circular groove is internally provided with an oil passage communicated with a crankcase outside the balance shaft cavity.
When the engine works, the balance shaft also starts to rotate to drive the oil pumping rotor to rotate, so that the lubricating oil in the cavity of the balance shaft is pumped into the crankcase body outside the cavity of the balance shaft. When the engine is stopped, the balance shaft stops rotating, and the oil pumping rotor stops pumping oil accordingly. Like this, can realize the synchronous of pumping oil device and balance shaft and open and stop, need not additionally to set up controlling means and control the pumping oil device, stability is good, and the reliability is high.
In implementation, one side of the oil pumping rotor 41 facing the circular groove is provided with a plurality of oil grooves 42 uniformly distributed along the circumferential direction, one end of each oil groove 42 in the circumferential direction of the oil pumping rotor 41 is an oil inlet end with a larger width, the other end of each oil groove 42 is an oil outlet end with a smaller width, and the direction of each oil inlet end is consistent with the rotation direction of the balance shaft 2; the oil groove 42 is located at the outer edge of the oil pumping rotor 41 in the radial direction, and is integrally communicated with the outer circular surface of the oil pumping rotor 41; the oil inlet end of the oil groove 42 is provided with an oil inlet which axially penetrates through the oil pumping rotor; the bottom of the circular groove in the vertical radial direction is provided with an oil passage communicated with a crankcase outside the cavity of the balance shaft.
By adopting the structure, the lubricating oil in the cavity of the balance shaft flows into the oil groove through the oil inlet, the oil groove rotates to the oil passage at the bottom of the circular groove along with the rotation of the oil pumping rotor along with the balance shaft, and the oil groove is communicated with the oil passage at the bottom of the circular groove because the oil groove is integrally communicated with the outer circular surface of the oil pumping rotor, and the lubricating oil in the oil groove can flow into the oil passage. And because the orientation of the oil inlet end is consistent with the steering of the balance shaft, namely the oil channel is communicated with the oil inlet end of the oil groove and then communicated with the oil outlet end of the oil groove, in the rotation process of the oil pumping rotor, the lubricating oil and the oil groove move relatively, namely the lubricating oil flows towards the oil outlet end of the oil groove relative to the oil pumping rotor, and the width of the oil outlet end of the oil groove is smaller than that of the oil inlet end, so that the lubricating oil in the oil groove enters the oil channel under the centrifugal force and the squeezing force of gradually reducing the width of the oil groove, and the oil pumping. Because the oil inlet communicates with balanced axle cavity all the time, and the volume of oil groove does not actually reduce, in case when the liquid level in the balanced axle cavity is close the lower extreme height of circular recess, the oil groove can't be filled completely to lubricating oil, and the pump oil effect weakens, nevertheless can play the effect of lubricating to the pump oil device simultaneously, prevents that the pump oil rotor from taking place dry grinding. Therefore, the purpose of reducing the liquid level height in the cavity of the balance shaft can be achieved, dry grinding damage of the oil pumping rotor caused by complete evacuation of lubricating oil in the cavity of the balance shaft can be avoided, and the improvement of the operation reliability and the service life are facilitated.
When in implementation, two ends of the balance shaft 2 are arranged on the wall of the crankcase 1 through single-side belt oil seal bearings; the circular groove is located the single side area oil blanket bearing orientation one side in the crankcase 1, pump oil rotor 41 orientation one side of single side area oil blanket bearing is coaxial to be provided with and is annular bulge, the external diameter of bulge is less than the inner circle external diameter of single side area oil blanket bearing.
During implementation, crankcase 1 includes left crankcase and the right crankcase of mutual lock installation, the right-hand member of balance shaft 2 passes right crankcase, and this end has set gradually balancing piece installation axial region and screw spindle from inside to outside, install balance shaft driven tooth 5 and balancing piece 6 from inside to outside on the balancing piece installation axial region in proper order, the thickness sum of balance shaft driven tooth 5 and balancing piece 6 is greater than the length of balancing piece installation axial region, the epaxial cover of screw is equipped with balancing piece gasket 7 to compress tightly through installing at the epaxial lock clamp nut 8 of screw the tip of balancing piece.
When the balance shaft is implemented, the lower end of the partition plate 3 is obliquely arranged towards the lower part of the balance shaft, and the bottom of the partition plate is provided with a first oil duct 10; an auxiliary partition plate 9 formed by extending the bottom of the crankcase 1 upwards is further arranged on one side of the partition plate 3, which is far away from the balance shaft, and the upper end of the auxiliary partition plate is connected with the partition plate to form an oil suction cavity; the oil pumping device 4 is an oil pump of an engine, a second oil duct 11 and a third oil duct 12 connected with the oil pump are arranged on the wall of one end of the partition plate 3 in the length direction, the second oil duct and the third oil duct are respectively arranged on two sides of the auxiliary partition plate 9, and the second oil duct is communicated with the oil suction cavity.
Therefore, the lubricating oil in the balance shaft cavity flows into the oil suction cavity through the first oil passage and is sucked into the oil pump from the second oil passage. And the height of the partition plate is higher, so that lubricating oil in other cavities can be organized to flow into the balance shaft cavity through the top of the partition plate, and the liquid level height in the balance shaft cavity can be reduced under the action of the engine oil pump.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An engine lubricating oil circulation system comprises a crankcase (1) and a crankshaft arranged in the crankcase (1); the engine oil balance device is characterized in that a rotatable balance shaft (2) is arranged below the crankshaft in parallel, one side of the balance shaft (2) in the horizontal radial direction is close to the wall of the crankcase (1), a partition plate (3) formed by upward extending the bottom of the crankcase (1) is arranged at the other side of the balance shaft at intervals, the partition plate (3) extends along the length direction of the balance shaft (2) and forms a balance shaft cavity for the balance shaft (2) to rotate with the wall of the crankcase (1), and the partition plate (3) is higher than the maximum liquid level of engine oil in a shutdown state; an oil pumping device (4) is further arranged on the crankcase (1), an oil inlet of the oil pumping device (4) is connected to the bottom of the balance shaft cavity, and an oil outlet of the oil pumping device is connected to the inside of a crankcase body outside the balance shaft cavity;
the oil pumping device (4) comprises a disc-shaped oil pumping rotor (41), the oil pumping rotor (41) is coaxially and fixedly installed at one end of the balance shaft (2), a circular groove matched with the oil pumping rotor (41) is formed in the wall of the crankcase (1) at the end, and the oil pumping rotor (41) can be rotatably installed in the circular groove to form a pump body structure; the oil pumping rotor (41) is provided with an oil inlet communicated with the balance shaft cavity, and an oil passage communicated with a crankcase outside the balance shaft cavity is arranged in the circular groove;
one side of the oil pumping rotor (41) facing the circular groove is provided with a plurality of oil grooves (42) which are uniformly distributed along the circumferential direction, one end of each oil groove (42) in the circumferential direction of the oil pumping rotor (41) is an oil inlet end with a larger width, the other end of each oil groove is an oil outlet end with a smaller width, and the direction of each oil inlet end is consistent with the direction of the balance shaft (2); the oil groove (42) is positioned at the outer edge of the oil pumping rotor (41) in the radial direction and integrally communicated with the outer circular surface of the oil pumping rotor (41); the oil inlet end of the oil groove (42) is provided with an oil inlet which penetrates through the oil pumping rotor along the axial direction; the bottom of the circular groove in the vertical radial direction is provided with an oil passage communicated with a crankcase outside the cavity of the balance shaft.
2. The engine lubricating oil circulation system according to claim 1, characterized in that both ends of the balance shaft (2) are mounted on the wall of the crankcase (1) by single-side oil-sealed bearings; the circular groove is located the single side area oil blanket bearing orientation one side in the crankcase (1), pump oil rotor (41) orientation one side coaxial setting of single side area oil blanket bearing is annular bulge, the external diameter of bulge is less than the inner circle external diameter of single side area oil blanket bearing.
3. The engine lubricating oil circulation system of claim 1, wherein the crankcase (1) comprises a left crankcase and a right crankcase which are buckled with each other, the right end of the balance shaft (2) passes through the right crankcase, a balance block mounting shaft section and a threaded shaft are sequentially arranged at the right end of the balance shaft (2) from inside to outside, balance shaft driven teeth (5) and a balance block (6) are sequentially arranged on the balance block mounting shaft section from inside to outside, the sum of the thicknesses of the balance shaft driven teeth (5) and the balance block (6) is greater than the length of the balance block mounting shaft section, and a balance block gasket (7) is sleeved on the threaded shaft and is tightly pressed at the end part of the balance block through a locking clamp nut (8) arranged on the threaded shaft.
4. The engine lubricating oil circulation system according to claim 1, characterized in that the lower end of the bulkhead (3) is disposed obliquely toward the lower side of the balance shaft, and a first oil passage (10) is provided at the bottom; an auxiliary partition plate (9) formed by upward extending the bottom of the crankcase (1) is further arranged on one side, away from the balance shaft, of the partition plate (3), and the upper end of the auxiliary partition plate is connected with the partition plate to form an oil suction cavity; the oil pumping device (4) is an oil pump of an engine, a second oil duct (11) and a third oil duct (12) which are connected with the oil pump are arranged on the wall of one end of the partition plate (3) in the length direction, the second oil duct and the third oil duct are respectively arranged on two sides of the auxiliary partition plate (9), and the second oil duct is communicated with the oil suction cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923519.5A CN108979779B (en) | 2018-08-14 | 2018-08-14 | Engine lubricating oil circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923519.5A CN108979779B (en) | 2018-08-14 | 2018-08-14 | Engine lubricating oil circulation system |
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| Publication Number | Publication Date |
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| CN108979779A CN108979779A (en) | 2018-12-11 |
| CN108979779B true CN108979779B (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810923519.5A Active CN108979779B (en) | 2018-08-14 | 2018-08-14 | Engine lubricating oil circulation system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458412B (en) * | 2022-01-26 | 2023-10-17 | 浙江亚特电器股份有限公司 | A stir oily structure and engine for engine |
| CN115263487B (en) * | 2022-09-02 | 2024-04-16 | 中国重汽集团济南动力有限公司 | Oil pumping device without additional power |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288117A (en) * | 1999-09-03 | 2001-03-21 | 本田技研工业株式会社 | External shell of balancing shaft |
| CN101793180A (en) * | 2008-12-11 | 2010-08-04 | 通用汽车环球科技运作公司 | Engine balance shaft housing and method of assembling same |
| CN202220633U (en) * | 2011-07-22 | 2012-05-16 | 湖南机油泵股份有限公司 | Gear transmission rotor oil pump connected with an end cover of an engine |
| CN102518512A (en) * | 2011-12-19 | 2012-06-27 | 奇瑞汽车股份有限公司 | Transmission structure of oil pump |
| CN102797789A (en) * | 2012-07-31 | 2012-11-28 | 奇瑞汽车股份有限公司 | Balance shaft case structure of engine |
-
2018
- 2018-08-14 CN CN201810923519.5A patent/CN108979779B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1288117A (en) * | 1999-09-03 | 2001-03-21 | 本田技研工业株式会社 | External shell of balancing shaft |
| CN101793180A (en) * | 2008-12-11 | 2010-08-04 | 通用汽车环球科技运作公司 | Engine balance shaft housing and method of assembling same |
| CN202220633U (en) * | 2011-07-22 | 2012-05-16 | 湖南机油泵股份有限公司 | Gear transmission rotor oil pump connected with an end cover of an engine |
| CN102518512A (en) * | 2011-12-19 | 2012-06-27 | 奇瑞汽车股份有限公司 | Transmission structure of oil pump |
| CN102797789A (en) * | 2012-07-31 | 2012-11-28 | 奇瑞汽车股份有限公司 | Balance shaft case structure of engine |
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| CN108979779A (en) | 2018-12-11 |
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