CN103790663B - Integrated camshaft - Google Patents
Integrated camshaft Download PDFInfo
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- CN103790663B CN103790663B CN201310752155.6A CN201310752155A CN103790663B CN 103790663 B CN103790663 B CN 103790663B CN 201310752155 A CN201310752155 A CN 201310752155A CN 103790663 B CN103790663 B CN 103790663B
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- oil
- shaft body
- cam shaft
- camshaft
- integrated
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses an integrated camshaft. The integrated camshaft comprises a suction fan and a camshaft body, wherein a mounting hole for mounting the suction fan is formed inside one end, close to a gear chamber, of the camshaft body, a vent hole communicated with the mounting hole penetrates through the camshaft body, and oil discharging holes communicated with the vent hole are radially formed in the middle of the camshaft body. An oil-gas separation function is integrated in the integrated camshaft, active oil-gas separation can be achieved, separation efficiency of an oil-gas mixture is improved, and oil consumption of an internal combustion engine during working is reduced.
Description
Technical field
The present invention relates to field of internal combustion engine, particularly to a kind of integrated camshaft with Oil-gas Separation function.
Background technology
Internal combustion engine is a kind of device that the chemical energy of fuel is converted to mechanical energy output power, and this process is by combustion
Constantly burning generation gases at high pressure promote piston to move downward to material, and meanwhile, the piston of motion passes through linkage band dynamic crankshaft and revolves
Turn, thus exporting power.During the up and down motion of piston, the high-temperature gas after most of burning enters air from exhaust duct
In, but also there are partial gas can scurry into below piston by the gap between piston ring and piston, enter into crankcase
In.Enter the gas of crankcase and bent axle rotates after the splashing machine oil producing contacts and forms mixed oil and gas, meanwhile, because of cylinder block
Temperature is higher, also can produce some machine oil steam, so, there is substantial amounts of gas mixture in the crankcase, if to these
Gas mixture is left intact and directly arranges to air, then, not only pollute environment but also will be carried over part machine oil,
Increased the consumption of machine oil.
For the consumption reducing pollution and reduce machine oil, at present, typically all specially design a set of respirator system, mainly use
Carry out separation oil and gas.Respiratory system is typically made up of special purpose parts such as oil gas baffle, labyrinth passage and gs-oil separators, oil gas baffle
It is all disposed within inside valve mechanism cover with labyrinth passage, gs-oil separator is typically all disposed within outside valve mechanism cover, separates
Oil droplet oil sump is led back by rubber tube.Gs-oil separator mainly includes support, housing, gum cover, separates filter element and o type circle etc.
Part.
But, above-mentioned respirator system parts species is many, complex structure, high cost.Further, existing respirator system
Belong to passive separation oil and gas, realize the outside effusion of gas mixture by the pressure reduction of engine interior and air, it point
Affected by the effusion speed of gas mixture from efficiency, lead to often to occur Oil-gas Separation and thoroughly do not cause consumption of lubricating oil high
Problem.
Content of the invention
The present invention is to overcome defect in above-mentioned prior art, providing a kind of integrated camshaft, be capable of actively dividing
From oil gas, improve the separation efficiency of gas mixture, reduce internal combustion engine oil consumption in the course of the work.
For achieving the above object, the invention provides a kind of integrated camshaft, comprising: drawing fan；Camshaft is originally
Body, it is provided with the installing hole installing described drawing fan inside one end of gear chamber, passes through in described camshaft body interior
It is connected with the passage connecting with described installing hole, be radially provided with the draining with passage insertion in cam shaft body middle part
Hole.
In technique scheme, installing hole passes through bellmouth transition with passage.
In technique scheme, oil leak hole is located between every grade of admission cam and exhaust cam.
In technique scheme, oil leak hole is orthogonal with the axially bored line of passage.
In technique scheme, drawing fan is integrally formed using engineering plastics.
In technique scheme, be provided with for gear near the axle journal position of one end of gear chamber in cam shaft body or
Chain-drive driving gear, installing hole is located inside axle journal.
In technique scheme, drawing fan is fixed on installing hole inwall and is rotated together with cam shaft body.
In technique scheme, the installing hole position inside drawing fan is provided with gear oil screen.
Compared with prior art, the invention has the following beneficial effects: passing through to design drawing fan in cam shaft body
And respective channel, the function of Oil-gas Separation is integrated on camshaft, realizes the purpose of active separation oil and gas, thoroughly solve oil gas
Detached blockage problem；Meanwhile, reduce the most of part in the respiratory system of available engine, be especially mounted in cylinder head
Special gs-oil separator on cover, can lift the presentation quality of electromotor.
Brief description
Fig. 1 is the integrated camshaft cross-sectional schematic of the embodiment of the present invention；
Fig. 2 is cam shaft body cross-sectional schematic of the present invention；
Fig. 3 is the integrated camshaft front view of the embodiment of the present invention；
Fig. 4 is the integrated camshaft left view of the embodiment of the present invention.
In conjunction with accompanying drawing labelling the following drawings labelling thereon:
1- drawing fan, 2- cam shaft body, 21- installing hole, 22- passage, 23- oil leak hole, 24- bellmouth, 25- enters
Gas cam, 26- exhaust cam, 3- driving gear.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by specific embodiment.
The integrated camshaft of the present invention Oil-gas Separation function is integrated on camshaft it is achieved that camshaft multi-functional
Change, belong to active oil and gas separating system, Oil-gas Separation will more thorough and not have blockage problem.Meanwhile, using the present invention
Integrated camshaft carry out Oil-gas Separation, the most of part in the respiratory system of available engine can be reduced, especially pacify
It is contained in the special gs-oil separator in valve mechanism cover, the presentation quality of electromotor can be lifted.
As shown in Figures 1 and 2, as a kind of preferred embodiment, the integrated camshaft of the present invention, including drawing fan 1, convex
Wheel shaft body 2 and driving gear 3, driving gear 3 is arranged close to the axle journal position of crankcase one end, and driving gear 3 is by bent axle
Drive, drawing fan 1 is fixedly mounted on installing hole 21(within the camshaft journal at driving gear 3 referring to Fig. 2), and inhale
Gas fan 1, cam shaft body 2 are alignd with the end face of driving gear 3.Have and installing hole in cam shaft body 2 internal run-through
The passages 22 of 21 connections, the diameter of passage 22 can be designed according to the actual strength of cam shaft body 2, installing hole 21 with
Passage 22 passes through bellmouth 24 smooth transition, for changing mixed oil and gas circulation area.In cam shaft body 2 middle part footpath
To the oil leak hole 23 being provided with passage 22 insertion, main provide return flow line to the machine oil separated, oil leak hole 23 straight
Footpath can be designed according to the actual strength of cam shaft body, and meanwhile, the number of oil leak hole 23 can be identical with number of cylinders, that is, set
It is also possible to different between every grade of admission cam 25 and exhaust cam 26, but at least need 1-2, oil leak hole 23 and ventilation
The axially bored line in hole 22 is orthogonal.It is provided with gear oil screen (not shown) at the installing hole position of drawing fan 1 inner side, have more preferably
Oil-gas Separation function.
The hole of three types, i.e. installing hole, in concrete machining cam shaft body 2, are directly processed on cam shaft body 2
21st, passage 22 and oil leak hole 23, installing hole 21 is located at cam shaft body 2 and installs inside the axle journal of driving gear 3, passage 22
Axially penetrate through along cam shaft body 2, oil leak hole 23 is processed between admission cam 25 and exhaust cam 26, installing hole 21
Diameter is bigger than passage 22.
As shown in Figures 3 and 4, in the present embodiment, gear drive is passed through in the transmission between bent axle and camshaft or chain passes
Dynamic, so the timing gears installation end in cam shaft body 2 fixedly mounts driving gear 3, driving gear 3 can be convex with existing
Wheel shaft timing gears the same it is also possible to designed, designed according to actual needs.Drawing fan 1 adopts global design, uses engineering plastics
It is integrally formed, there is in rotary course air suction function, and there is good oil resistant gas corrosion and ageing resistace.Air-breathing wind
Fan 1 is relatively fixed with cam shaft body 2, is fitted close.In work process, bent axle drives driving gear by gear or chain
3 rotations, driving gear 3 is identical with the rotating speed of cam shaft body 2, and cam shaft body 2 drives drawing fan 1 to work, drawing fan 1
Absorb the entrance passage 22 of the gas mixture in crankcase and gear chamber (note: crankcase communicates with gear chamber) and carry out oil
Edema caused by disorder of QI from.
The operation principle of this integrated camshaft of detailed description below and work process:
Gas mixture rotation during, because their quality is different, so the centrifugal force being subject to is different,
Many to be weighed, machine oil granule will easily be isolated under the influence of centrifugal force for machine oil granule opposing gas molecule
Come.
1st, in engine working process, bent axle and camshaft are all continuous operatings, and the rotating speed of bent axle is the 2 of camshaft
Times.Transmission between bent axle and camshaft is typically all to pass through gear drive or chain drive, so needing in transmission process
Gear.Meanwhile, the working speed of general electromotor most of the time is at 1500-3000 rev/min about, so camshaft is most
At 750-1500 rev/min about, so, the centrifugal force producing inside camshaft is very big to the working speed of time.
So, it is feasible for carrying out Oil-gas Separation inside the camshaft with passage.
2nd, driving gear 3 and cam shaft body 2 are relatively-stationary, and the rotation that bent axle passes to driving gear 3 will drive
Cam shaft body 2 rotates together；Drawing fan 1 is fixed in the installing hole 21 in cam shaft body 2, so drawing fan 1 will
Follow cam shaft body 2 to operate together, operation process produces suction.So, the mixed oil and gas of crankcase and gear interior
Can smoothly enter inside the passage 22 within cam shaft body 2.
3rd, in engine working process, the gas mixture producing and machine oil steam are logical first in the presence of drawing fan
Cross drawing fan 1, now, part mixes can be with the blade contact of drawing fan 1, and the machine oil granule in gas can adsorb in leaf
On piece and under the influence of centrifugal force taken the lead in separating, realized initial gross separation, the machine oil granule separated can direct edge
Drawing fan 1 and the end face of driving gear 3 flows back in oil sump.Immediately, gas mixture enters passage 22, in this process
In, because air draught is to produce laminar motion, through drawing fan 2 laminar gas by installing hole 21 and passage 22 it
Between bellmouth 23 when because the change of cross-sectional flow area, enter passage 22 gas velocity will be enlarged and laminar flow
Athletic meeting is destroyed, under leading to the part machine oil granule in these gas mixtures adsorbed when contacting passage 22 inwall
Come.Meanwhile, the most of machine oil granule entering in the gas mixture of people's passage 22 can be operated together with cam shaft body 2,
The effect of centrifugal force is separated, and the machine oil granule separated will adsorb the inwall in passage 22, and oil leak hole 23
Intersect with passage 22, absorption can be got rid of from oil leak hole 23 under the influence of centrifugal force in the machine oil of passage 22 inwall
Go out.
4th, gas mixture is separated with gas after said process, having been realized in machine oil granule.After separating
Gas will flow out in the end (i.e. other end of camshaft) of passage 22, the waste gas of outflow passes through electromotor and air
Passage can draw electromotor the gas after separation.
To sum up, it is achieved that the purpose of active separation oil and gas by said process, the blocking thoroughly solving Oil-gas Separation is asked
Topic, the function of Oil-gas Separation is integrated on camshaft, reduces the most of part in the respiratory system of available engine, especially
It is arranged on the special gs-oil separator in valve mechanism cover, the presentation quality of electromotor can be lifted.
The specific embodiment being only the present invention disclosed above, but, the present invention is not limited to this, any this area
What technical staff can think change all should fall into protection scope of the present invention.
Claims (7)
1. a kind of integrated camshaft is it is characterised in that include:
Drawing fan；
Cam shaft body, it is provided with the installing hole installing described drawing fan inside one end of gear chamber, in described cam
Shaft body internal run-through has the passage connecting with described installing hole, and described installing hole passes through bellmouth mistake with described passage
Cross, be radially provided with the oil leak hole with described passage insertion in described cam shaft body middle part.
2. integrated camshaft according to claim 1 is it is characterised in that described oil leak hole is located at every grade of admission cam and row
Between gas cam.
3. integrated camshaft according to claim 1 is it is characterised in that the axially bored line of described oil leak hole and described passage
Orthogonal.
4. integrated camshaft according to claim 1 is it is characterised in that described drawing fan adopts engineering plastics one to become
Type.
5. integrated camshaft according to claim 1 is it is characterised in that in described cam shaft body near the one of gear chamber
The axle journal position at end is provided with for gear or chain-drive driving gear, and described installing hole is located inside described axle journal.
6. integrated camshaft according to claim 1 is it is characterised in that described drawing fan is fixed on described installation in the hole
Wall is rotated together with described cam shaft body.
7. according to the arbitrary described integrated camshaft of claim 1 to 6 it is characterised in that peace inside described drawing fan
Dress hole portion position is provided with gear oil screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752155.6A CN103790663B (en) | 2013-12-31 | 2013-12-31 | Integrated camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752155.6A CN103790663B (en) | 2013-12-31 | 2013-12-31 | Integrated camshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103790663A CN103790663A (en) | 2014-05-14 |
| CN103790663B true CN103790663B (en) | 2017-01-25 |
Family
ID=50666670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310752155.6A Active CN103790663B (en) | 2013-12-31 | 2013-12-31 | Integrated camshaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN103790663B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224057A (en) * | 2016-10-08 | 2016-12-14 | 湖南大学 | A kind of rebreather of engine system |
| CN107489489B (en) * | 2016-12-30 | 2019-11-22 | 宝沃汽车（中国）有限公司 | Gas and oil separating plant and engine |
| CN107084017B (en) * | 2017-06-21 | 2023-01-31 | 浙江春风动力股份有限公司 | Vehicle and engine thereof |
| CN111335982A (en) * | 2018-12-19 | 2020-06-26 | 北汽福田汽车股份有限公司 | Oil-gas separator, engine and vehicle |
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| CN101270683A (en) * | 2007-10-30 | 2008-09-24 | 重庆长安汽车股份有限公司 | Gas oil separation structure of internal combustion engine crankcase ventilation system |
| CN102348871A (en) * | 2009-03-10 | 2012-02-08 | 蒂森克虏伯普雷斯塔技术中心股份公司 | Hollow body comprising an integrated oil separator unit |
| CN203614149U (en) * | 2013-12-31 | 2014-05-28 | 广西玉柴机器股份有限公司 | Integrated camshaft |
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|---|---|---|---|---|
| DE19931740C2 (en) * | 1999-07-08 | 2001-06-13 | Daimler Chrysler Ag | Reciprocating internal combustion engine with a camshaft |
| DE102005034273A1 (en) * | 2005-07-22 | 2006-06-14 | Daimlerchrysler Ag | Combustion engine e.g. for motor vehicle, has two cam shafts in cylinder head with first cam shaft having longitudinal bore hole for conveying Blow-By-Gas and oil separating device provided |
| DE102006012611A1 (en) * | 2006-03-20 | 2007-09-27 | Mahle International Gmbh | Cylinder head of an internal combustion engine |
| CN201650407U (en) * | 2010-04-23 | 2010-11-24 | 中国北车集团大连机车车辆有限公司 | Negative pressure aspirator for crankcase of 240 diesel engine |
| CN202140107U (en) * | 2011-07-04 | 2012-02-08 | 上海攀极投资有限公司 | Ventilation air non-closed connecting device |
| CN102434250B (en) * | 2011-11-23 | 2013-11-20 | 奇瑞汽车股份有限公司 | Gas-oil separation structure with crankcase for ventilation and operation method thereof |
| JP5867051B2 (en) * | 2011-12-14 | 2016-02-24 | アイシン精機株式会社 | Oil separator |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270683A (en) * | 2007-10-30 | 2008-09-24 | 重庆长安汽车股份有限公司 | Gas oil separation structure of internal combustion engine crankcase ventilation system |
| CN102348871A (en) * | 2009-03-10 | 2012-02-08 | 蒂森克虏伯普雷斯塔技术中心股份公司 | Hollow body comprising an integrated oil separator unit |
| CN203614149U (en) * | 2013-12-31 | 2014-05-28 | 广西玉柴机器股份有限公司 | Integrated camshaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103790663A (en) | 2014-05-14 |
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