CN107559100B - Crankcase and crankcase end cover - Google Patents
Crankcase and crankcase end cover Download PDFInfo
- Publication number
- CN107559100B CN107559100B CN201710758106.1A CN201710758106A CN107559100B CN 107559100 B CN107559100 B CN 107559100B CN 201710758106 A CN201710758106 A CN 201710758106A CN 107559100 B CN107559100 B CN 107559100B
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- Prior art keywords
- oil
- cooling
- crankcase
- end cover
- cooling oil
- Prior art date
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- 238000001816 cooling Methods 0.000 claims abstract description 143
- 239000003921 oil Substances 0.000 abstract description 236
- 239000010687 lubricating oil Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a crankcase end cover, which comprises an end cover body, wherein the end cover body is provided with a cylinder head supporting part, a crankshaft supporting part, a cylinder head oil way communicated with the cylinder head supporting part and a crankshaft oil way communicated with the crankshaft supporting part; the cooling oil way is arranged on the inner wall of the end cover body and is communicated with the cylinder head oil way and the crankshaft oil way. Set up the cooling oil circuit on the inner wall of end cover body, lubricating oil input is cooled down the cooling oil circuit through the contact of end cover body and external environment, later carries to cylinder head oil circuit and bent axle oil circuit to make lubricating oil before getting into cylinder head and bent axle, cool off the lubricating oil in the cooling oil circuit by the end cover body, reduce the temperature of the lubricating oil in input cylinder head oil circuit and the bent axle oil circuit, improve the cooling effect of crankcase. The invention also provides a crankcase with the crankcase end cover structure.
Description
Technical Field
The invention relates to the technical field of power devices, in particular to a crankcase and a crankcase end cover.
Background
The crankcase of motorcycle is used for supporting and installing other parts of whole engine, bearing parts and bearing various impact forces and driving moment generated when the engine works. The crankcase is divided into a two-stroke engine crankcase and a four-stroke engine crankcase, a freestanding crankcase and a crankcase combined with a transmission, an integral crankcase and a split crankcase, a crankcase without a transmission, a crankcase with a transmission, and the like. The crankcases are divided crankcases with symmetrical cylinder centers, the left and right cases are connected by screws, and a sealing gasket is arranged in the middle.
The existing right end cover of the crankcase is provided with a cylinder head supporting part and a crankshaft supporting part, the right end cover is limited by the structural limitation of the right end cover of the crankcase, only a cylinder head oil way communicated with the cylinder head is arranged on the right end cover, the cylinder head oil way is simultaneously separated into a crankshaft oil way communicated with the crankshaft supporting part, the cylinder head oil way and the crankshaft oil way can only cool the cylinder head and the crankshaft supporting position, after long-time working, the temperature in the crankcase is easily increased, the cooling efficiency of the cylinder head oil way and the crankshaft oil way is reduced, and the heat load of the crankcase is increased.
Therefore, how to improve the cooling effect of the crankcase is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a crankcase end cap to improve the cooling effect of the crankcase; the invention also provides a crankcase.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a crankcase end cover comprises an end cover body, wherein a cylinder head supporting part, a crankshaft supporting part, a cylinder head oil way communicated with the cylinder head supporting part and a crankshaft oil way communicated with the crankshaft supporting part are arranged on the end cover body; the cooling oil circuit is arranged on the inner wall of the end cover body and is communicated with the cylinder head oil circuit and the crankshaft oil circuit.
Preferably, in the above crankcase end cover, the cooling oil passage includes a cooling oil groove provided on an inner wall of the end cover body, and an oil passage cover plate provided on the cooling oil groove to seal the cooling oil groove.
Preferably, in the above crankcase end cover, the end cover body includes a first cover mounting portion provided to cover the clutch, and a second cover mounting portion provided at a lower end of the cylinder head body; the cooling oil circuit comprises a first cooling oil circuit and a second cooling oil circuit, wherein the first cooling oil circuit is arranged on the first cover assembly part, the second cooling oil circuit is arranged on the second cover assembly part, and the first cooling oil circuit and the second cooling oil circuit are mutually communicated.
Preferably, in the above crankcase end cover, the oil passage cover plate includes a first oil passage cover plate respectively covering the first cooling oil passage, and a second oil passage cover plate covering the second cooling oil passage.
Preferably, in the above crankcase cover, the first cooling oil passage includes an oil supply bridge that communicates with the second cooling oil passage, and first and second annular oil passages that communicate with the oil supply bridge and extend relatively in a circumferential direction of the first cover portion.
Preferably, in the above crankcase end cover, a plurality of oil passage cooling fins protruding from an outer wall of the second cover portion are provided on the end cover body, and the second cooling oil passage includes a second cooling oil groove sunk into the oil passage cooling fins from an inner wall of the second cover portion.
Preferably, in the above crankcase end cover, the oil supply bridge includes a first bridge oil inlet and a first bridge oil outlet that communicate the second cooling oil passage and the first annular oil passage, and a second bridge oil inlet and a second bridge oil outlet that communicate the second cooling oil passage and the second annular oil passage.
Preferably, in the above crankcase end cover, the first annular oil passage and the second annular oil passage are communicated with each other, and the oil supply bridge includes a bridge oil inlet communicating the first annular oil passage and the second cooling oil passage, and a bridge oil outlet communicating the second annular oil passage and the second cooling oil passage.
Preferably, in the above crankcase end cover, the oil passage fin is an oil passage fin structure having a semicircular annular structure in cross section.
A crankcase comprising a crankcase body and a crankcase end cover arranged at one end of the crankcase body, wherein the crankcase end cover is the crankcase end cover according to any one of the above.
The crankcase end cover provided by the invention comprises an end cover body, wherein the end cover body is provided with a cylinder head supporting part, a crankshaft supporting part, a cylinder head oil way communicated with the cylinder head supporting part and a crankshaft oil way communicated with the crankshaft supporting part; the cooling oil way is arranged on the inner wall of the end cover body and is communicated with the cylinder head oil way and the crankshaft oil way. The crankcase is through seting up cylinder head oil circuit and the bent axle oil circuit on the end cover body, provide the lubricating oil that cools off and lubricate cylinder head and bent axle, simultaneously, set up cooling oil circuit on the inner wall of end cover body, after the lubricating oil input to cooling oil circuit, the surface of end cover body and external environment's contact, make its interior cooling oil circuit in-cool off, continue to carry to cylinder head oil circuit and bent axle oil circuit, thereby make lubricating oil before getting into cylinder head and bent axle, the lubricating oil that has passed through the end cover body through the cooling oil circuit of end cover body has been circulated, cool off cylinder head oil circuit and bent axle oil circuit through the lubricating oil after the cooling, improve the cooling effect of both, thereby effectively reduce the interior temperature of crankcase, improve the cooling effect of crankcase.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a crankcase end cap provided by the present invention;
fig. 2 is a rear structural schematic view of fig. 1.
Detailed Description
The invention discloses a crankcase end cover, which improves the cooling effect of a crankcase; the invention also provides a crankcase.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, fig. 1 is a front view of a crankcase end cover provided by the present invention; fig. 2 is a rear structural schematic view of fig. 1.
The invention provides a crankcase end cover, which comprises an end cover body 1, wherein a cylinder head supporting part 2 and a crankshaft supporting part 3 are arranged on the end cover body 1, and a cylinder head oil way communicated with the cylinder head supporting part 2 and a crankshaft oil way communicated with the crankshaft supporting part 3; the cooling oil circuit 4 is arranged on the inner wall of the end cover body 2 and is communicated with the cylinder head oil circuit and the crankshaft oil circuit. The crankcase is through seting up cylinder head oil circuit and bent axle oil circuit on the end cover body 1, provide the lubricating oil that cools off and lubricate cylinder head and bent axle, simultaneously, set up cooling oil circuit 4 on the inner wall of end cover body 1, after lubricating oil input to cooling oil circuit 4, because end cover body 1 and external environment contact, external environment blows to end cover body 1, make its interior cooling oil circuit 4 in lubricating oil after cooling, continue to carry to cylinder head oil circuit and bent axle oil circuit, thereby make lubricating oil before getting into cylinder head and bent axle, at first cool down the lubricating oil in the cooling oil circuit 4 by end cover body 1, the lubricating oil after the cooling cools off cylinder head oil circuit and bent axle oil circuit, improve the cooling effect of both, thereby effectively reduce the interior temperature of crankcase, improve the cooling effect of crankcase.
In this case, the cooling oil path 4 includes a cooling oil groove 5 formed on the inner wall of the end cover body 1, and an oil path cover plate covering the cooling oil groove 5 to seal the cooling oil groove 5. The crankcase end cover is plate structure, sets up cooling oil circuit 4 as cooling oil groove 5, sets up the rib that protrudes in its inner wall at the inner wall of end cover body 1 promptly, encloses into cooling oil groove 5 by the rib, and the rigid coupling oil duct apron on cooling oil groove 5 seals cooling oil groove 5 by the oil duct apron for lubricating oil circulates in the direction of cooling oil groove 5, realizes the cooling to crankcase end cover surface.
Meanwhile, the oil duct cover plate is additionally arranged on the inner wall of the end cover body 1, so that the oil duct cover plate plays a role in sound insulation on transmission structures such as a clutch in a crank case, and accordingly the oil duct cover plate and the cooling oil groove 5 are matched to play a role in reducing noise, the sound insulation effect of the motorcycle is improved, and driving comfort is provided.
In this case, in one embodiment, the end cover body 1 includes a first cover part 101 covering the clutch, and a second cover part 102 located at the lower end of the cylinder cover body 1; the cooling oil passage 4 includes a first cooling oil passage 41 provided in the first cover portion 101 and a second cooling oil passage 42 provided in the second cover portion 102, and the first cooling oil passage 41 and the second cooling oil passage 42 communicate with each other. The second cover part 102 is located below the cylinder head, has a planar plate-like structure, and the first cover part 101 is covered on the end part of the clutch and has a circular arc end cover structure. The inner structure of the end cover body 1 is adapted, the cooling oil way 4 is divided into two parts on the first cooling oil way 41 and the second cooling oil way 42, the first cooling oil way 42 and the second cooling oil way 42 are mutually communicated, and when lubricating oil is conveyed, the end cover body 1 sequentially passes through the first cooling oil way and the second cooling oil way after being input through the oil inlet, and finally enters the cylinder head oil way and the crankshaft oil way.
In an embodiment of the present disclosure, the oil duct cover plate includes a first oil duct cover plate respectively covering the first cooling oil path, and a second oil duct cover plate covering the second cooling oil path. The first cooling oil way and the second cooling oil way all include cooling oil groove and oil duct apron structure, and the oil duct apron adapts to the arrangement position and the arrangement structure of first cooling oil way and second cooling oil way 42, sets up to split structure, and by first oil duct apron setting on first cooling oil way 41, second oil duct apron lid is located on the second cooling oil way 42, and split design is fixed alone, improves the leakproofness of first cooling oil way 41 and second cooling oil way 42.
In this case, the first cooling oil passage 41 includes an oil supply bridge 413 that communicates with the second cooling oil passage 42, and a first annular oil passage 411 and a second annular oil passage 412 that communicate with the oil supply bridge 413 and extend oppositely in the circumferential direction of the first lid portion 101. The first cooling oil path 41 and the second cooling oil path 42 are in a split structure, the two are in transition from the plane of the inner wall of the end cover of the crankcase to the arc surface, an oil supply bridge 413 which is arranged independently is arranged at the connecting position of the two, and the oil supply bridge 413 is bridged between the two end surfaces. The oil supply bridge 413 can be arranged as a rib plate at the contact position of the two end surfaces, and the middle part of the rib plate is provided with an oil passing hole. The first cover part 101 is covered at the end part of the clutch structure, the middle part of the arc structure protects and supports the end part of the clutch, the middle space of the arc structure is prevented from being occupied, the first cooling oil way 41 is branched by the oil supply gap bridge 413, extends out along the circumference of the first cover part 101 of the arc structure and is in a semicircular annular structure, the extending two parts are a first annular oil way 411 and a second annular oil way 412 respectively, lubricating oil input by the oil supply gap bridge 413 flows back to the second cooling oil way 42 after being cooled through the circulation of the loop formed by the first annular oil way 411 and the second annular oil way 412, and finally is sent into a cylinder head oil way and a crankshaft oil way.
In this embodiment, the end cover body 1 is provided with a plurality of oil duct cooling fins 103 protruding from the outer wall of the second cover portion, and the second cooling oil path 42 includes a second cooling oil groove sunk into the oil duct cooling fins 103 from the inner wall of the second cover portion 102. Further, in order to improve the cooling effect of the end cover, since the lubricating oil circulates through the inner wall surface of the end cover body 1, the outer wall of the end cover body 1 is provided with the oil passage cooling fin 103, and the end cover body 1 is air-cooled at the same time, thereby improving the heat dissipation effect. The oil passage cooling fin 103 protrudes from the outer wall of the end cover body 1, a sinking groove is formed in the oil passage cooling fin 103, and the arrangement position of the second cooling oil groove of the second cooling oil path 42 coincides with the sinking groove of the oil passage cooling fin 103, that is, the oil passage cooling fin 103 is formed in a thin-wall groove structure, lubricating oil circulates from the inside of the oil passage cooling fin, and air cooling and heat dissipation are performed from the outside of the oil passage cooling fin.
Preferably, the oil passage fins 103 are of an oil passage fin structure having a semicircular annular structure in cross section. The outer end face of the semicircular oil duct radiating fin protrudes out of the outer wall of the end cover body, and the inner end face is used as a second cooling oil groove.
In this embodiment, the oil supply bridge 413 includes a first bridge oil inlet and a first bridge oil outlet that communicate with the second cooling oil path 42 and the first annular oil path 411, and a second bridge oil inlet and a second bridge oil outlet that communicate with the second cooling oil path 42 and the second annular oil path 412. The first cooling oil path 41 is connected with the second cooling oil path 42, the second cooling oil path 42 is divided into two parts, one part is communicated with the oil inlet, lubricating oil is fed into the first annular oil path 411 through the second cooling oil path after being introduced, the first annular oil path 411 is a loop, and the second cooling oil path 42 simultaneously supplies oil to the first annular oil path 411 and receives the flowing-back lubricating oil; the lubricating oil flowing back through the first annular oil passage 411 is sent to the second annular circuit 412, the second annular oil passage 412 is a circuit, and the lubricating oil flows into the second cooling oil passage 42 through the second annular circuit 412, and finally is sent to the cylinder head. The second cooling oil path 42 includes three sections, namely a first section communicated with the first bridge oil inlet, a second section simultaneously connecting the first bridge oil outlet and the second bridge oil inlet, and a third section communicated with the second bridge oil outlet. The three-section structure ensures that the second cooling oil way fully covers the second cover assembly part and ensures that the oil way has no circulation dead angle.
In this embodiment, the first annular oil passage 411 and the second annular oil passage 412 are mutually communicated, and the oil supply bridge 413 includes a bridge oil inlet that communicates the first annular oil passage 411 with the second cooling oil passage 42, and a bridge oil outlet that communicates the second annular oil passage 412 with the second cooling oil passage 42. The first annular oil path 411 and the second annular oil path 412 can be simultaneously communicated, the second cooling oil path 42 is sent to the first annular oil path through the bridge oil inlet, and the lubricating oil flows through the first annular oil path and the second annular oil path and then flows back to the second cooling oil path through the bridge oil outlet.
Based on the crankcase end cover provided in the above embodiment, the invention also provides a crankcase, which comprises a crankcase body and a crankcase end cover arranged at one end of the crankcase body, wherein the crankcase end cover arranged on the crankcase body is the crankcase end cover provided in the above embodiment.
Since the crankcase employs the crankcase end cap of the above embodiment, the crankcase has the beneficial effects of the crankcase end cap, refer to the above embodiment.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The end cover of the crankcase is characterized by comprising an end cover body, wherein a cylinder head supporting part, a crankshaft supporting part, a cylinder head oil way communicated with the cylinder head supporting part and a crankshaft oil way communicated with the crankshaft supporting part are arranged on the end cover body; the cooling oil circuit is arranged on the inner wall of the end cover body and is communicated with the cylinder head oil circuit and the crankshaft oil circuit;
the end cover body comprises a first cover part and a second cover part, wherein the first cover part is covered on the clutch, and the second cover part is positioned at the lower end of the end cover body; the cooling oil circuit comprises a first cooling oil circuit and a second cooling oil circuit, the first cooling oil circuit is arranged on the first cover assembly part, the second cooling oil circuit is arranged on the second cover assembly part, and the first cooling oil circuit and the second cooling oil circuit are communicated with each other;
the first cooling oil path comprises an oil supply gap bridge communicated with the second cooling oil path, and a first annular oil path and a second annular oil path which are communicated with the oil supply gap bridge and extend out relatively along the circumferential direction of the first cover part.
2. The crankcase end cover of claim 1, wherein the cooling gallery includes a cooling oil sump opening on an inner wall of the end cover body, and an oil gallery cover plate covering the cooling oil sump to seal the cooling oil sump.
3. The crankcase end cover of claim 2, wherein said oil passage cover plate includes a first oil passage cover plate that covers said first cooling oil passage and a second oil passage cover plate that covers said second cooling oil passage, respectively.
4. The crankcase end cover according to claim 3 wherein said end cover body is provided with a plurality of oil passage fins protruding from an outer wall of said second cover portion, and said second cooling oil passage includes a second cooling oil groove sunk into said oil passage fins from an inner wall of said second cover portion.
5. The crankcase end cover of claim 4, wherein said oil supply bridge includes a first bridge oil inlet and a first bridge oil outlet communicating said second cooling gallery and said first annular gallery, and a second bridge oil inlet and a second bridge oil outlet communicating said second cooling gallery and said second annular gallery.
6. The crankcase end cover of claim 4, wherein said first annular oil passage and said second annular oil passage are in communication with each other, said oil supply bridge includes a bridge oil inlet in communication with said first annular oil passage and said second cooling oil passage, and a bridge oil outlet in communication with said second annular oil passage and said second cooling oil passage.
7. The crankcase end cover of claim 4 wherein said oil passage fins are of an oil passage fin structure having a semi-circular configuration in cross section.
8. A crankcase comprising a crankcase body and a crankcase end cap disposed at one end of the crankcase body, wherein the crankcase end cap is a crankcase end cap as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710758106.1A CN107559100B (en) | 2017-08-29 | 2017-08-29 | Crankcase and crankcase end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710758106.1A CN107559100B (en) | 2017-08-29 | 2017-08-29 | Crankcase and crankcase end cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107559100A CN107559100A (en) | 2018-01-09 |
| CN107559100B true CN107559100B (en) | 2024-01-16 |
Family
ID=60977447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710758106.1A Active CN107559100B (en) | 2017-08-29 | 2017-08-29 | Crankcase and crankcase end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107559100B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11223115A (en) * | 1998-02-04 | 1999-08-17 | Suzuki Motor Corp | Engine oil passage structure for motorcycle |
| CN2685585Y (en) * | 2004-04-02 | 2005-03-16 | 江苏常工动力机械有限公司 | Cooling rear cover for single-cylinder diesel oil engine |
| TWM318065U (en) * | 2007-03-13 | 2007-09-01 | Da-Yi Chiou | Cooling device for crankshaft housing cap |
| CN204126757U (en) * | 2014-10-09 | 2015-01-28 | 重庆隆鑫发动机有限公司 | Engine crankshaft box assembly and crankcase cover thereof |
| CN106907266A (en) * | 2015-10-16 | 2017-06-30 | 本田技研工业株式会社 | The cover of internal combustion engine |
| CN207297189U (en) * | 2017-08-29 | 2018-05-01 | 力帆实业(集团)股份有限公司 | Crankcase and crankcase end cover |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10033416C1 (en) * | 2000-07-08 | 2001-06-21 | Mtu Friedrichshafen Gmbh | Cover plate for crankcase of IC engine extends over complete crankcase and forms modular unit with heat exchangers, pumps, and filters |
| DE10325670B4 (en) * | 2003-06-06 | 2006-03-16 | Mtu Friedrichshafen Gmbh | Cover plate for a crankcase |
-
2017
- 2017-08-29 CN CN201710758106.1A patent/CN107559100B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11223115A (en) * | 1998-02-04 | 1999-08-17 | Suzuki Motor Corp | Engine oil passage structure for motorcycle |
| CN2685585Y (en) * | 2004-04-02 | 2005-03-16 | 江苏常工动力机械有限公司 | Cooling rear cover for single-cylinder diesel oil engine |
| TWM318065U (en) * | 2007-03-13 | 2007-09-01 | Da-Yi Chiou | Cooling device for crankshaft housing cap |
| CN204126757U (en) * | 2014-10-09 | 2015-01-28 | 重庆隆鑫发动机有限公司 | Engine crankshaft box assembly and crankcase cover thereof |
| CN106907266A (en) * | 2015-10-16 | 2017-06-30 | 本田技研工业株式会社 | The cover of internal combustion engine |
| CN207297189U (en) * | 2017-08-29 | 2018-05-01 | 力帆实业(集团)股份有限公司 | Crankcase and crankcase end cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107559100A (en) | 2018-01-09 |
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