CN105697185B - crankcase - Google Patents
crankcase Download PDFInfo
- Publication number
- CN105697185B CN105697185B CN201610059203.7A CN201610059203A CN105697185B CN 105697185 B CN105697185 B CN 105697185B CN 201610059203 A CN201610059203 A CN 201610059203A CN 105697185 B CN105697185 B CN 105697185B
- Authority
- CN
- China
- Prior art keywords
- lubricating oil
- crankcase
- duct
- rocker arm
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
-
- 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
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/06—Dip or splash lubrication
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of crankcases, crankcase is equipped with the lubricating oil splash duct being connected between crankcase and the rocker arm installation space of cylinder assemblies, the lubricating oil to splash in crankcase of the present invention enters rocker arm installation space by the duct, it is capable of forming and sufficient lubrication and cooling is carried out to the cylinder heads movement parts such as rocker arm, valve, the circulation route of lubricating oil is not changed, the Fast Wearing and the carbon distribution as caused by high temperature for avoiding rocker arm and valve, extend the service life of rocker arm assembly.
Description
Technical field
The present invention relates to a kind of engine components, in particular to a kind of crankcase.
Background technique
The air inlet system and exhaust system of engine are the necessary parts of engine, drive intake and exhaust valves by bent axle power
Charge combustion and exhaust gas discharge are realized in opening and closing；Intake and exhaust valves generally use rocker arm driving, and rocker arm assembly is located at gas
The closer position of cylinder, operating temperature are higher；And in order to prevent high-frequency movement rocker arm and valve Fast Wearing and reduce than
Temperature then needs that it is cooled down and is lubricated by lubricating oil；In the prior art, special oil leab can be equipped on cylinder head,
Lubricating oil in the oil leab forms circulation at cylinder head, but is unable to fully cause rocker arm to rocker arm and valve sufficient lubrication
It is higher with working temperature of valve, it is easily formed carbon distribution, and wear comparatively fast, reduced the service life.
Therefore, it is necessary to the lubrication systems to existing engine to improve, and be capable of forming and transport to cylinder heads such as rocker arm, valves
Moving part carries out sufficient lubrication and cooling, does not change the circulation route of lubricating oil, avoid rocker arm and valve Fast Wearing and by
The carbon distribution caused by high temperature extends the service life of rocker arm assembly.
Summary of the invention
In view of this, being capable of forming the object of the present invention is to provide a kind of crankcase to the cylinder heads movement parts such as rocker arm, valve
Sufficient lubrication and cooling are carried out, does not change the circulation route of lubricating oil, avoids the Fast Wearing of rocker arm and valve and due to height
Carbon distribution caused by temperature extends the service life of rocker arm assembly.
Crankcase of the invention, the crankcase are equipped with the rocker arm installation for being connected to crankcase and cylinder assemblies
Lubricating oil splash duct between space；In use, that lubricating oil can at runtime formed is winged for crankcase inside crankshaft link assembly
It splashing, the lubricating oil of splashing enters the rocker arm installation space (being located on cylinder head) of cylinder assembly by lubricating oil splash channel section,
The formation such as rocker arm and valve are lubricated and cooling, due to being lubrication of splashing, a small amount of lubricating oil can play the role of good.
Further, the lubricating oil splash duct be located at engine connecting rod big end setting get rid of oil skip get rid of oily splashing model
It encloses；The common components that oil skip (oil-throwing rod) belongs to put-put are got rid of, belong to the prior art, details are not described herein；Lubricating oil flies
Splash duct be located at get rid of oil skip get rid of in oily range (such as the movement tangent line for getting rid of oil skip), conducive to making more lubricating oil enter rocker arm
Installation space forms lubrication and cooling.
Further, the lubricating oil splash duct is directly through to rocker arm installation space；Directly through straight hole is formed, more
Required lubricant housings is directly splashed to conducive to lubricating oil, structure is simple, lubrication and good cooling results.
Further, the lubricating oil splash duct is located between inlet valve mandril through hole and exhaust valve mandril through hole；
Since the installation of rocker arm is corresponding with the position of inlet valve mandril and exhaust valve mandril, the profit splashed by lubricating oil splash duct
Lubricating oil is more conducive to act on rocker arm, forms efficient lubrication；Inlet valve mandril through hole and exhaust valve mandril through hole are existing
Structure, details are not described herein.
Further, the cross section in the lubricating oil splash duct is size header structure, and the major part of the size header structure is kept away
It extends to be formed to two sides after driving valve stem through hole and exhaust valve mandril through hole into；Size header structure includes T-shaped structure, ladder
Shape structure, triangular structure or the one large one small structure by smooth curved transition；The microcephaly position of the size header structure
It between inlet valve mandril through hole and exhaust valve mandril through hole, is gradually expanded after avoiding to two sides, two sides refer to distinguishing
Orientation to inlet valve mandril through hole and exhaust valve mandril through hole, details are not described herein.
Further, the major part of the size header structure corresponds to cylinder body side, which can further increase rocker arm entirety
Lubricating oil splash amount, meanwhile, which also corresponds to inlet and exhaust valve splashing lubricating oil, and cooling and lubricant effect is more preferable.
Further, the crankcase is the crankcase of vertical type general-purpose petrol engine.
Further, the lubricating oil splash duct is upper and lower straight hole, and more conducively lubricating oil passes through, and guarantees to flow back.
Further, the size header structure is that gradually ascending structure is made of smoothed curve, and stress is avoided to concentrate,
And space between inlet valve mandril through hole and exhaust valve mandril through hole can be made full use of, increase lubricating oil splash amount.
Beneficial effects of the present invention：Crankcase of the invention is equipped with using crankcase and is connected to crankcase and air cylinder group
The structure in the lubricating oil splash duct between the rocker arm installation space of part, the interior lubricating oil to splash of crankcase are entered by the duct
Rocker arm installation space is capable of forming and carries out sufficient lubrication and cooling to the cylinder heads movement parts such as rocker arm, valve, do not change lubricating oil
Circulation route, the Fast Wearing and the carbon distribution as caused by high temperature for avoiding rocker arm and valve, extend rocker arm assembly use the longevity
Life.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram that the present invention installs and uses；
Fig. 2 is Fig. 1 along A direction view；
Fig. 3 is longitudinal sectional view of the present invention.
Specific embodiment
Fig. 1 is the structural schematic diagram that the present invention installs and uses, and Fig. 2 is Fig. 1 along A direction view, and Fig. 3 is the longitudinal section view of the present invention
Figure, as shown in the figure：The crankcase of the present embodiment, the crankcase 1, which is equipped with, is connected to crankcase 1 and cylinder assemblies
Lubricating oil splash duct 5 between rocker arm installation space；In use, crankcase inside crankshaft link assembly can make to lubricate at runtime
Oil, which is formed, to splash, and the lubricating oil of splashing (is located at by the rocker arm installation space that lubricating oil splash channel section enters cylinder assembly
On cylinder head), the formation such as rocker arm and valve are lubricated and cooling, due to being lubrication of splashing, a small amount of lubricating oil can play good
Effect.
In the present embodiment, what 2 major part of connecting rod that the lubricating oil splash duct 5 is located at engine was arranged gets rid of getting rid of for oil skip 3
Oily splashing range；As shown, 2 major part of connecting rod of the piston rod part of engine, which is equipped with, gets rid of oil skip 3, the lubricating oil splash
Duct be located at get rid of oil skip get rid of oily splashing range；The common components that oil skip 3 (oil-throwing rod) belongs to put-put are got rid of, oily direction is got rid of
As indicated in the figures by an arrow, belong to the prior art, details are not described herein；Lubricating oil splash duct, which is located at, gets rid of the getting rid of in oily range of oil skip
(such as the movement tangent line for getting rid of oil skip) forms lubrication and cooling conducive to making more lubricating oil enter rocker arm installation space.
In the present embodiment, the lubricating oil splash duct 5 is directly through to rocker arm installation space；It is directly straight through being formed
Hole, more conducively lubricating oil directly splash to required lubricant housings, and structure is simple, lubrication and good cooling results.
In the present embodiment, the lubricating oil splash duct 5 is located at inlet valve mandril through hole 4 and exhaust valve mandril through hole
Between 6；Since the installation of rocker arm is corresponding with the position of inlet valve mandril and exhaust valve mandril, flown by lubricating oil splash duct
The lubricating oil splashed is more conducive to act on rocker arm, forms efficient lubrication；Inlet valve mandril through hole and exhaust valve mandril through hole
For existing structure, details are not described herein.
In the present embodiment, the cross section in the lubricating oil splash duct 5 is size header structure, the size header structure it is big
Head extends to be formed to two sides after avoiding inlet valve mandril through hole and exhaust valve mandril through hole；Size header structure includes T shape knot
Structure, trapezium structure, triangular structure or the one large one small structure by smooth curved transition, using flat in the present embodiment
The one large one small structure of sliding curve transition avoids stress that is, to be made of gradually ascending structure smoothed curve
It concentrates, and the space between inlet valve mandril through hole and exhaust valve mandril through hole can be made full use of, increase lubricating oil splash
Amount；The microcephaly of the size header structure is located between inlet valve mandril through hole 4 and exhaust valve mandril through hole 6, avoids backward two
Side is gradually expanded, and two sides refer to the orientation to inlet valve mandril through hole and exhaust valve mandril through hole respectively, herein
It repeats no more.
In the present embodiment, the major part of the size header structure corresponds to cylinder body side, which can further increase rocker arm
Whole lubricating oil splash amount, meanwhile, which also corresponds to inlet and exhaust valve splashing lubricating oil, and cooling and lubricant effect is more preferable.
In the present embodiment, the crankcase 1 is the crankcase of vertical type general-purpose petrol engine.
In the present embodiment, the lubricating oil splash duct 5 is upper and lower straight hole, and more conducively lubricating oil passes through, and guarantees
Reflux.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (3)
1. a kind of crankcase, it is characterised in that：The crankcase, which is equipped with, is connected to shaking for crankcase and cylinder assemblies
Lubricating oil splash duct between arm installation space；The lubricating oil splash duct be located at engine connecting rod big end setting get rid of oil
Spoon gets rid of oily splashing range；The lubricating oil splash duct is directly through to rocker arm installation space；The lubricating oil splash duct
Between inlet valve mandril through hole on crankcase and exhaust valve mandril through hole；The lubricating oil splash duct it is transversal
Face is size header structure, and the major part of the size header structure avoids inlet valve mandril through hole and exhaust valve mandril through hole is backward
Two sides extend to be formed；The major part of the size header structure corresponds to engine cylinder body side；The lubricating oil splash duct is upper
Under straight hole.
2. crankcase according to claim 1, it is characterised in that：The crankcase is vertical type general-purpose petrol engine
Crankcase.
3. crankcase according to claim 1 or 2, it is characterised in that：The size header structure is to be made of smoothed curve
Gradually ascending structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059203.7A CN105697185B (en) | 2016-01-28 | 2016-01-28 | crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059203.7A CN105697185B (en) | 2016-01-28 | 2016-01-28 | crankcase |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105697185A CN105697185A (en) | 2016-06-22 |
| CN105697185B true CN105697185B (en) | 2018-11-16 |
Family
ID=56229697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610059203.7A Active CN105697185B (en) | 2016-01-28 | 2016-01-28 | crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105697185B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563986A (en) * | 1983-09-09 | 1986-01-14 | Kubota Ltd. | Splash lubricated over head valve engine |
| CN1458394A (en) * | 2003-04-23 | 2003-11-26 | 周亮俊 | Forced lubrication in cylinder head cover of internal combustion engine |
| CN1483923A (en) * | 2002-09-20 | 2004-03-24 | 重庆宗申技术开发研究有限公司 | Pordable four-stroke gasoline engine |
| EP1666703A1 (en) * | 2003-08-29 | 2006-06-07 | Ji-Rong Hu | A small four-stroke gasoline engine with oil mist lubrication |
| WO2008052403A1 (en) * | 2006-10-28 | 2008-05-08 | Wuxi Kipor Power Co., Ltd | A lubricating device for a valve of an engine |
| CN205315141U (en) * | 2016-01-28 | 2016-06-15 | 隆鑫通用动力股份有限公司 | Crankcase of splash lubrication cylinder end |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4511999B2 (en) * | 2005-06-23 | 2010-07-28 | 本田技研工業株式会社 | Engine valve gear |
-
2016
- 2016-01-28 CN CN201610059203.7A patent/CN105697185B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4563986A (en) * | 1983-09-09 | 1986-01-14 | Kubota Ltd. | Splash lubricated over head valve engine |
| CN1483923A (en) * | 2002-09-20 | 2004-03-24 | 重庆宗申技术开发研究有限公司 | Pordable four-stroke gasoline engine |
| CN1458394A (en) * | 2003-04-23 | 2003-11-26 | 周亮俊 | Forced lubrication in cylinder head cover of internal combustion engine |
| EP1666703A1 (en) * | 2003-08-29 | 2006-06-07 | Ji-Rong Hu | A small four-stroke gasoline engine with oil mist lubrication |
| WO2008052403A1 (en) * | 2006-10-28 | 2008-05-08 | Wuxi Kipor Power Co., Ltd | A lubricating device for a valve of an engine |
| CN205315141U (en) * | 2016-01-28 | 2016-06-15 | 隆鑫通用动力股份有限公司 | Crankcase of splash lubrication cylinder end |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105697185A (en) | 2016-06-22 |
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| GR01 | Patent grant |