CN114278409B - Crankshaft front end engine oil pressurizing structure and engine - Google Patents
Crankshaft front end engine oil pressurizing structure and engine Download PDFInfo
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- CN114278409B CN114278409B CN202111657854.3A CN202111657854A CN114278409B CN 114278409 B CN114278409 B CN 114278409B CN 202111657854 A CN202111657854 A CN 202111657854A CN 114278409 B CN114278409 B CN 114278409B
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Abstract
The invention discloses a crankshaft front end engine oil pressurizing structure and an engine, wherein the structure comprises: the crankshaft comprises a shaft body and a main journal oil duct arranged on the shaft body, wherein the main journal oil duct comprises a first oil duct, a second oil duct, a third oil duct and a fourth oil duct; the first oil duct extends along the axis line direction of the shaft body, the second oil duct, the third oil duct and the fourth oil duct penetrate through the shaft body along the direction perpendicular to the first oil duct and are communicated with the first oil duct, the second oil duct is communicated with an oil inlet of the first oil duct, the third oil duct is positioned between the oil inlet of the first oil duct and an oil outlet of the first oil duct, and the fourth oil duct is positioned between the third oil duct and the oil outlet of the first oil duct; the blockage blocks the first oil duct between the third oil duct and the fourth oil duct; and the booster pump takes the shaft body as a transmission shaft of the booster pump, an oil inlet cavity of the booster pump is communicated with the end part of the third oil duct in a sealing way, and an oil outlet cavity of the booster pump is communicated with the end part of the fourth oil duct in a sealing way. The structure can improve the use efficiency of high-pressure oil.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a crankshaft front end engine oil pressurizing structure and an engine.
Background
At present, the oil supply type plate spring shock absorber is widely applied to a diesel engine, and the torsional vibration energy of a shafting is absorbed and the stress of a crankshaft is reduced by increasing damping so as to achieve the purpose of protecting the crankshaft. The plate spring shock absorber needs external oil supply to generate damping and take away heat, and for the plate spring shock absorber which needs higher oil supply pressure to generate damping, the oil supply mode mainly adopts two modes of crankshaft direct supply and external pressurization oil supply.
As shown in fig. 1, a structural schematic diagram of the plate spring damper for directly supplying oil through a crankshaft is shown, the pressure of a main oil passage is firstly increased, the pressure oil of the main oil passage directly enters a plate spring damper 104 through a machine body 101, a bearing bush 102 and the crankshaft 103, and a pressurizing link is not arranged in the middle. In addition, in the process of lifting the pressure of the main oil gallery, the problems of increased flow of the oil pump, failure of a control valve, increased leakage, difficulty in sealing and the like are brought along, so that the risk of the whole lubricating system is increased.
As shown in fig. 2, which is a schematic structural diagram of the plate spring damper through external pressurization oil supply, after pressure oil in a main oil gallery is pressurized by an external pressurization pump, the pressure oil sequentially enters a front end cover 201 and a bushing 202, and finally enters a plate spring damper 203. Because the high-pressure oil flows through the bushing after being pressurized and is finally conveyed to the shock absorber, the high-pressure oil at the clearance of the bushing is seriously leaked, and the utilization efficiency of the pressurized high-pressure oil is low. And because the outer ring of the bush is in interference fit and the inner ring has small clearance, the assembly difficulty is high and the reliability is poor.
Disclosure of Invention
The invention provides a crankshaft front end engine oil supercharging structure and an engine, wherein the crankshaft front end engine oil supercharging structure can reduce the loss of oil transportation pressure drop, improve the use efficiency of high-pressure oil, ensure the reliability of the whole lubricating system, and has simple combined parts and high assembly performance.
In order to achieve the purpose, the invention provides the following technical scheme:
a crankshaft front end engine oil pressure increasing structure comprising:
the crankshaft comprises a shaft body and a main journal oil passage arranged on the shaft body, wherein the main journal oil passage comprises a first oil passage, a second oil passage, a third oil passage and a fourth oil passage; the first oil duct extends along the axis direction of the shaft body, an oil outlet of the first oil duct is located at the front end of the shaft body, the second oil duct, the third oil duct and the fourth oil duct penetrate through the shaft body along the direction perpendicular to the first oil duct, the second oil duct is communicated with an oil inlet of the first oil duct, the end portion of the second oil duct is communicated with a main oil duct of the machine body, the third oil duct is located between the oil inlet of the first oil duct and the oil outlet of the first oil duct and is communicated with the first oil duct, and the fourth oil duct is located between the third oil duct and the oil outlet of the first oil duct and is communicated with the first oil duct;
a plug located in the first oil passage between the third oil passage and the fourth oil passage for not communicating the first oil passage between the third oil passage and the fourth oil passage;
the booster pump, the booster pump cover in on the axis body with the axis body is its self transmission shaft for inhale main journal oil duct and pressurization with machine oil, the oil inlet chamber of booster pump with the end seal intercommunication of third oil duct, the oil outlet chamber of booster pump with the end seal intercommunication of fourth oil duct.
Optionally, the booster pump comprises a housing and an outer rotor and an inner rotor located inside the housing;
the inner rotor is arranged on the shaft body and located between the third oil duct and the fourth oil duct, inner teeth are arranged on the outer side of the inner rotor, the outer rotor is located on the outer side of the inner rotor, outer teeth are arranged on the inner side of the outer rotor, the number of the outer teeth is more than that of the inner teeth, and the outer teeth can be partially meshed with the inner teeth; the axial lead of the inner rotor is not coincident with the axial lead of the outer rotor, the inner rotor can eccentrically rotate relative to the outer rotor under the drive of the shaft body, and the outer rotor can rotate at a differential speed under the drive of the inner rotor;
the first end of the shell is hermetically connected with the part of the shaft body, which is positioned between the second oil duct and the third oil duct, and an oil inlet cavity is formed between the first end of the shell and the inner rotor and the outer rotor; the second end of the shell is in sealing connection with the part, between the shaft body and the oil outlet of the fourth oil duct and the oil outlet of the first oil duct, and an oil outlet cavity is formed between the second end of the shell and the inner rotor and the outer rotor.
Optionally, the first end of the housing is connected to the shaft through a front oil seal, and the second end of the housing is connected to the shaft through a rear oil seal.
Optionally, the matching section of the shaft body and the inner rotor is a hexagonal structure.
Optionally, a center line of the first oil passage coincides with a shaft axis of the shaft body.
Optionally, the second oil passage, the third oil passage and the third oil passage are arranged in parallel with each other.
The invention also provides an engine, which comprises any one crankshaft front end engine oil pressurizing structure provided by the technical scheme, a machine body and a part to be supplied with oil;
the machine body is connected with the shaft body through a bearing bush, a main oil way for supplying oil is arranged on the machine body, and the main oil way is communicated with the end part of the second oil duct through the bearing bush;
the oil supply part to be supplied is connected with the front end of the shaft body, and the oil duct on the oil supply part to be supplied is communicated with the oil outlet of the first oil duct.
Optionally, the oil-to-be-supplied member is a leaf spring damper.
Optionally, the booster pump further comprises a gear which is arranged on the shaft body in an interference fit manner, and the gear is located between the booster pump and the bearing bush.
The invention has the beneficial effects that:
the embodiment of the invention provides a crankshaft front end engine oil pressurizing structure and an engine, wherein the crankshaft front end engine oil pressurizing structure comprises a crankshaft, a plug and a booster pump, the crankshaft comprises a shaft body and a main journal oil passage arranged on the shaft body, engine oil can enter a second oil passage of the main journal oil passage from a main oil passage of a machine body and then flows into a first oil passage from the second oil passage, the engine oil flows into a third oil passage from the first oil passage due to the blocking of the plug in the first oil passage and then flows into an oil inlet cavity of the booster pump from a third oil passage, the booster pump pressurizes the inflowing engine oil to form high-pressure engine oil, the pressurized engine oil enters a fourth oil passage from an oil outlet cavity of the booster pump, the high-pressure engine oil and the low-pressure engine oil are separated from each other when the fourth oil passage flows into the first oil passage, and the high-pressure engine oil flows out from an oil outlet of the first oil passage under the blocking of the plug in the first oil passage, and pressurization and transmission of the engine oil are further realized. According to the crankshaft front end oil supercharging mechanism, the front end of the crankshaft shaft body can be connected with a component to be supplied with oil, the engine oil is sucked into a main journal oil duct on the crankshaft shaft body through the supercharging pump and is supercharged, the oil inlet cavity of the supercharging pump is communicated with the end portion of a third oil duct on the crankshaft shaft body in a sealing mode, the oil outlet cavity of the supercharging pump is communicated with the end portion of a fourth oil duct on the crankshaft shaft body in a sealing mode, the supercharging at the oil conveying end can be directly achieved, the engine oil is not leaked after supercharging, high-pressure oil directly enters the component to be supplied with oil, the loss of oil conveying pressure drop can be reduced, the using efficiency of the high-pressure oil is improved, and compared with the prior art, the pressure of the main oil duct and the flow of the engine oil do not need to be improved, the engine body and other engine oil accessories such as a pump filter and a control valve do not need to operate under high pressure, the risks of leakage, difficulty in sealing and the like can be reduced, the reliability of the whole lubricating system is guaranteed, the combined component is simple, and the assembly performance is high.
Drawings
FIG. 1 is a schematic view of a prior art leaf spring damper with oil supplied directly from the crankshaft;
FIG. 2 is a schematic structural view of a prior art leaf spring damper supplied with oil by external pressurization;
FIG. 3 is a schematic structural diagram of a crankshaft front end supercharging structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an outer rotor and an inner rotor according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an engine according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 3, the present invention provides a crankshaft front end engine oil pressure increasing structure, including:
the crankshaft comprises a shaft body 01 and a main journal oil passage arranged on the shaft body 01, wherein the main journal oil passage comprises a first oil passage L1, a second oil passage L2, a third oil passage L3 and a fourth oil passage L4; the first oil duct L1 extends along the axial lead direction of the shaft body 01, the oil outlet of the first oil duct L1 is positioned at the front end of the shaft body 01, the second oil duct L2, the third oil duct L3 and the fourth oil duct L4 penetrate through the shaft body 01 along the direction perpendicular to the first oil duct L1, the second oil duct L2 is communicated with the oil inlet of the first oil duct L1, the end part of the second oil duct L2 is communicated with the main oil duct of the machine body, the third oil duct L3 is positioned between the oil inlet of the first oil duct L1 and the oil outlet of the first oil duct L1 and is communicated with the first oil duct L1, and the fourth oil duct L4 is positioned between the third oil duct L3 and the oil outlet of the first oil duct L1 and is communicated with the first oil duct L1;
the plug 02 is positioned in the first oil passage L1 between the third oil passage L3 and the fourth oil passage L4, and is used for preventing the first oil passage L1 between the third oil passage L3 and the fourth oil passage L4 from being communicated;
the oil inlet cavity A of the booster pump 03 is communicated with the end part of the third oil duct L3 in a sealing mode, and the oil outlet cavity B of the booster pump 03 is communicated with the end part of the fourth oil duct L4 in a sealing mode.
The crankshaft front end engine oil supercharging mechanism provided by the embodiment of the invention comprises a crankshaft, a plug 02 and a supercharging pump 03, wherein the crankshaft comprises a shaft body 01 and a main journal oil passage arranged on the shaft body 01, engine oil can enter a second oil passage L2 of the main journal oil passage from the main oil passage of the machine body and then flows into a first oil passage L1 from the second oil passage L2, due to the blockage of the plug 02 in the first oil passage L1, the engine oil flows into a third oil passage L3 from the first oil passage L1 and then flows into an oil inlet cavity A of the supercharging pump 03 from the third oil passage, the supercharging pump 03 pressurizes the inflowing engine oil to form high-pressure engine oil, the pressurized engine oil enters a fourth oil passage L4 from an oil outlet cavity B of the supercharging pump 03, flows into the first oil passage L1 from the fourth oil passage L4, and is blocked by the plug 02 in the first oil passage L1, the high-pressure engine oil and the low-pressure engine oil flow out from an oil outlet of the first oil passage L1, and pressurization and transmission of the engine oil are further realized. The front end of the crankshaft front end oil supercharging mechanism can be connected with a part to be supplied with oil, the engine oil is sucked into a main journal oil duct on the crankshaft body 01 through the booster pump 03 and is supercharged, because the oil inlet cavity A of the booster pump 03 is communicated with the end part of a third oil duct L3 on the crankshaft body 01 in a sealing manner and the oil outlet cavity B of the booster pump 03 is communicated with the end part of a fourth oil duct L4 on the crankshaft body 01 in a sealing manner, the supercharging at the tail end of oil delivery can be directly realized, the engine oil does not leak after the supercharging, so that the high-pressure oil directly enters the part to be supplied with oil, the loss of oil delivery pressure drop can be reduced, the use efficiency of the high-pressure oil is improved, and compared with the prior art, the pressure of a main oil duct and the flow of the engine oil pump do not need to be improved, the machine body and other engine oil accessories such as a filter, a control valve and the like do not need to run at high pressure, the risks of leakage, difficulty in sealing and the whole lubricating system is ensured.
In one specific embodiment, the booster pump 03 may be a rotor pump, as shown in fig. 3 and 4, the booster pump 03 specifically includes a housing 031 and an outer rotor 032 and an inner rotor 033 located inside the housing 031; the inner rotor 033 is mounted on the shaft body 01 and located between the third oil channel L3 and the fourth oil channel L4, inner teeth 0331 are arranged on the outer side of the inner rotor 033, outer rotor 032 is located on the outer side of the inner rotor 033, outer teeth 0321 are arranged on the inner side of the outer rotor 032, the number of the outer teeth 0321 is larger than that of the inner teeth 0331, and the outer teeth 0321 and the inner teeth 0331 can be partially meshed; the axial lead of the inner rotor 033 is not coincident with the axial lead of the outer rotor, the inner rotor 033 can eccentrically rotate relative to the outer rotor 032 under the drive of the shaft body 01, and the outer rotor 032 can be driven by the inner rotor 033 to rotate at a differential speed; the first end of the housing 031 is hermetically connected with the portion of the shaft body 01 between the second oil passage L2 and the third oil passage L3, and an oil inlet cavity a is formed between the first end of the housing 031 and the inner rotor 033 and the outer rotor 032; the second end of the housing 031 is in sealing connection with the shaft body 01 at a portion between the oil outlets of the fourth oil passage L4 and the first oil passage L1, and an oil outlet cavity B is formed between the second end of the housing 031 and the inner rotor 033 and the outer rotor 032.
In the above-mentioned booster pump 03, because the external teeth 0321 on the external rotor 032 and the internal teeth 0331 on the internal rotor 033 are partially engaged, the axial lead of the external rotor 032 does not coincide with the axial lead of the internal rotor 033, the internal rotor 033 is driven by the crankshaft to perform eccentric motion relative to the external rotor 032, and the external rotor 032 can be driven by the internal rotor 033 to rotate at a differential speed. For example, as shown in fig. 4, in the upper half area, the volume formed by the inner teeth 0331 and the outer teeth 0321 gradually increases with the rotation direction of the inner rotor 033 while the inner rotor 033 rotates clockwise with the crankshaft, forming a vacuum oil suction chamber C. Along with the rotation of the inner rotor 033, the engine oil flows into the lower half portion, the volume formed by the inner teeth 0331 and the outer teeth 0321 is gradually reduced along with the rotation direction of the inner rotor 033 to form an oil pressing cavity D, the inner rotor 033 and the outer rotor 032 are matched with the compressor oil to form high-pressure oil, and the high-pressure oil flows into an oil outlet cavity B of the booster pump 03. The booster pump 03 can adjust the flow rate and pressure of engine oil by adjusting the inner rotor 033 and the outer rotor 032.
In a specific embodiment, as shown in fig. 3, a first end of the housing 031 may be hermetically connected to the shaft body 01 through a front oil seal 041, and a second end of the housing 031 may be hermetically connected to the shaft body 01 through a rear oil seal 042, so that oil leakage during transmission can be avoided.
In a specific embodiment, the matching section of the shaft body 01 and the inner rotor 033 may be a hexagonal structure, so as to ensure that the crankshaft shaft body 01 drives the inner rotor 033 to rotate.
In the above main journal oil passage, as shown in fig. 3, the center line of the first oil passage L1 and the axis line of the shaft body 01 may coincide with each other, so that the structural design of the main journal oil passage may be optimized, and the first oil passage L1, the second oil passage L2, the third oil passage L3, and the fourth oil passage L4 may be conveniently manufactured.
In addition, as shown in fig. 3, the second oil passage L2, the third oil passage L3, and the third oil passage L3 may be arranged in parallel to each other, so that the structural design of the main journal oil passage may be optimized, and the manufacturing is convenient.
An embodiment of the present invention further provides an engine, as shown in fig. 5, including any one of the crankshaft front end engine oil pressurizing structures provided in the foregoing technical solutions, further including an engine body 05 and a component 07 to be supplied with oil; the engine body 05 can be connected with the shaft body 01 through a bearing bush 06, a main oil path for supplying oil is arranged on the engine body 05, and the main oil path is communicated with the end part of the second oil passage L2 through the bearing bush 06; the part to be supplied with oil 07 may be connected to the front end of the shaft body 01, and an oil passage 071 of the part to be supplied with oil 07 is communicated with an oil outlet of the first oil passage L1.
In the engine provided by the embodiment of the invention, the engine oil pressurizing structure at the front end of the crankshaft, the engine body 05 and the part 07 to be supplied with oil are included, except that a small amount of leakage exists when the engine oil flows through a bearing bush 06, the engine oil is sucked into a main journal oil passage on a crankshaft body 01 through a booster pump 03 and is pressurized, because the oil inlet cavity A of the booster pump 03 is hermetically communicated with the end part of a third oil passage L3 on the crankshaft body 01 and the oil outlet cavity B of the booster pump 03 is hermetically communicated with the end part of a fourth oil passage L4 on the crankshaft body 01, the pressurization at the tail end of oil transportation can be directly realized, and no leakage exists after the pressurization of the engine oil, so that the high-pressure oil directly enters the part to be supplied with oil, the loss of the pressure drop of the transportation oil can be reduced, the use efficiency of the high-pressure oil can be improved, and compared with the prior art, the pressure of the main oil passage 051 and the pump flow rate do not need to be increased, the high-pressure operation of the engine body 05 and other engine oil accessories such as a filter and a control valve does not need to be operated at high pressure, the leakage and the sealing difficulty and the risk of the leakage and the whole lubricating system can be reduced, so that the whole lubricating system is ensured, the reliability is simple and the assembly property is high.
The oil supply part 07 can be a plate spring absorber, high-pressure engine oil pressurized by the engine oil pressurization structure at the front end of the crankshaft can directly enter the plate spring absorber, and external high-pressure oil enters a gap between reeds of the absorber, so that the reeds can rotate mutually between the inner ring and the outer ring and generate damping when the reeds are extruded, the effect of absorbing torsional vibration energy is achieved, and heat is taken away. Optionally, the oil supply unit 07 may also be another device, and in practical application, the oil pressurizing structure at the front end of the crankshaft is suitable for a unit that needs a larger oil supply pressure or a local pressurizing at the front end of the crankshaft, so that the structure of the oil supply unit 07 may be set according to practical situations, and is not limited herein.
The engine provided by the embodiment of the invention may further include a gear 08 that is mounted on the shaft body 01 in an interference manner, wherein the gear 08 is located between the booster pump 03 and the bearing bush 06, and the gear 08 enables the front end of the crankshaft body 01 to be in transmission connection with other components.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The utility model provides a bent axle front end machine oil pressure boost structure which characterized in that includes:
the crankshaft comprises a shaft body and a main journal oil passage arranged on the shaft body, wherein the main journal oil passage comprises a first oil passage, a second oil passage, a third oil passage and a fourth oil passage; the first oil duct extends along the axis direction of the shaft body, an oil outlet of the first oil duct is located at the front end of the shaft body, the second oil duct, the third oil duct and the fourth oil duct penetrate through the shaft body along the direction perpendicular to the first oil duct, the second oil duct is communicated with an oil inlet of the first oil duct, the third oil duct is located between an oil inlet of the first oil duct and an oil outlet of the first oil duct and is communicated with the first oil duct, and the fourth oil duct is located between the third oil duct and the oil outlet of the first oil duct and is communicated with the first oil duct;
the plug is positioned in the first oil duct between the third oil duct and the fourth oil duct and is used for enabling the first oil duct between the third oil duct and the fourth oil duct not to be communicated;
the booster pump, the booster pump cover in on the axis body with the axis body is its self transmission shaft for inhale engine oil main journal oil duct and pressurization, the oil inlet chamber of booster pump with the end seal intercommunication of third oil duct, the oil outlet chamber of booster pump with the end seal intercommunication of fourth oil duct.
2. The crankshaft front end oil boosting structure according to claim 1, wherein the booster pump includes a housing, and an outer rotor and an inner rotor inside the housing;
the inner rotor is arranged on the shaft body and located between the third oil duct and the fourth oil duct, inner teeth are arranged on the outer side of the inner rotor, the outer rotor is located on the outer side of the inner rotor, outer teeth are arranged on the inner side of the outer rotor, the number of the outer teeth is more than that of the inner teeth, and the outer teeth and the inner teeth can be partially meshed; the axial lead of the inner rotor is not coincident with the axial lead of the outer rotor, the inner rotor can eccentrically rotate relative to the outer rotor under the drive of the shaft body, and the outer rotor can rotate at a differential speed under the drive of the inner rotor;
the first end of the shell is hermetically connected with the part of the shaft body, which is positioned between the second oil duct and the third oil duct, and an oil inlet cavity is formed between the first end of the shell and the inner rotor and the outer rotor; the second end of the shell is in sealing connection with the shaft body at a part between the fourth oil duct and the oil outlet of the first oil duct, and an oil outlet cavity is formed between the second end of the shell and the inner rotor and the outer rotor.
3. The crankshaft front end oil pressurizing structure according to claim 2, wherein the first end of the housing is hermetically connected with the shaft body through a front oil seal, and the second end of the housing is hermetically connected with the shaft body through a rear oil seal.
4. The crankshaft front end oil pressure increasing structure according to claim 2, wherein a fitting section of the shaft body and the inner rotor is a hexagonal structure.
5. The crankshaft front end oil pressurizing structure according to any one of claims 1 to 4, wherein a center line of the first oil passage coincides with a shaft axis of the shaft body.
6. The crankshaft front end oil pressurizing structure according to any one of claims 1 to 4, wherein the second oil passage, the third oil passage, and the third oil passage are arranged in parallel with each other.
7. An engine comprising the crankshaft front end oil pressurizing structure according to any one of claims 1 to 6, further comprising a body and a member to be oil-supplied;
the machine body is connected with the shaft body through a bearing bush, a main oil way for supplying oil is arranged on the machine body, and the main oil way is communicated with the end part of the second oil duct through the bearing bush;
the oil supply part to be supplied is connected with the front end of the shaft body, and the oil duct on the oil supply part to be supplied is communicated with the oil outlet of the first oil duct.
8. The engine of claim 7, wherein the component to be supplied with oil is a leaf spring damper.
9. An engine according to claim 7 or 8, further comprising a gear interference mounted on the shaft, the gear being located between the booster pump and the bearing shells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111657854.3A CN114278409B (en) | 2021-12-31 | 2021-12-31 | Crankshaft front end engine oil pressurizing structure and engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111657854.3A CN114278409B (en) | 2021-12-31 | 2021-12-31 | Crankshaft front end engine oil pressurizing structure and engine |
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| CN114278409B true CN114278409B (en) | 2022-10-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4518662B2 (en) * | 2000-12-11 | 2010-08-04 | 本田技研工業株式会社 | Oil pump for internal combustion engine |
| JP2006200409A (en) * | 2005-01-19 | 2006-08-03 | Toyota Motor Corp | Balancer device of internal combustion engine |
| CN201246204Y (en) * | 2008-08-28 | 2009-05-27 | 佛山市顺德德力柴油机有限公司 | Lubricating system of diesel engine |
| JP2011144707A (en) * | 2010-01-12 | 2011-07-28 | Honda Motor Co Ltd | Engine lubricating device |
| CN210564698U (en) * | 2019-09-27 | 2020-05-19 | 江苏常发农业装备股份有限公司 | Engine lubricating system and engine |
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