CN201526354U - Crankcase ventilation system for an engine and an engine - Google Patents
Crankcase ventilation system for an engine and an engine Download PDFInfo
- Publication number
- CN201526354U CN201526354U CN201020117781XU CN201020117781U CN201526354U CN 201526354 U CN201526354 U CN 201526354U CN 201020117781X U CN201020117781X U CN 201020117781XU CN 201020117781 U CN201020117781 U CN 201020117781U CN 201526354 U CN201526354 U CN 201526354U
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- camshaft
- ventilation system
- oil
- crankcase ventilation
- crankcase
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Abstract
A crankcase ventilation system for an engine comprises a crankcase, a hollow camshaft communicated with the crankcase, an exhaust pipe communicated with the camshaft and an oil-gas separation device, wherein the oil-gas separation device comprises a shell and an oil-gas filter in the shell; the shell is mounted on the engine; one end of the camshaft is inserted into the inner cavity of the shell and the oil-gas separation filter is mounted on the end of the camshaft inserted into the inner cavity of the shell. The engine comprises the crankcase ventilation system. The special oil-gas separation device is arranged in the crankcase ventilation system, thus a radial hole arranged on the camshaft is not necessary and only the camshaft is processed into a horizontal hollow camshaft.
Description
Technical field
The utility model relates to engine art, more particularly, relates to a kind of motor that is used for the crankcase ventilation system of motor and comprises this system.
Background technique
As everyone knows, when explosive motor is worked, always some inflammable mixture and waste gas through piston ring and channelling in crankcase, channelling can make the pressure in the crankcase increase to inflammable mixture and the waste gas in the crankcase, thereby the possibility of inefficacy (losing efficacy as crank shaft oil seal) appears in the sealing that improves crankcase largely, causes engine oil leakage easily.
In order to overcome above-mentioned defective at least, in the current motor usually design crankcase ventilation system is arranged, it is excessive etc. that it mainly act as the pressure that prevents in the crankcase.
For this reason, the various crankcase ventilation technology that are used for motor have been developed in the prior art.For example, CN101270683A discloses a kind of gas oil separation structure of internal combustion engine crankcase ventilation system, with reference to figure 1, Fig. 2 and Fig. 3 as can be known, the agent structure of explosive motor comprises oil pan 1, oil strainer 2, crankcase 3, bent axle 5, connecting rod 6, piston 7, cylinder head 8, distribution device 9, camshaft 10, camshaft cover 11, valve mechanism cover 12, PCV valve 25 etc.Oil pan 1 forms machine oil chamber 20 with machine oil cover 4, and gas channel 19 passes through machine oil refecting cover 4.Be provided with venting cavity 17 at crankcase 3, near cylinder head 8, also be provided with venting cavity 15.One end of camshaft extends outside the valve mechanism cover 12, is covered by end cap 23, and end cap 23 forms with camshaft cover 11 and impacts separation chamber 26.End cap 23 has ventilating hole and return opening, and ventilating hole upwards enters PCV valve 25 by venting channels 24, and return opening is by oil returning tube 16 grease chamber 20 that meets sb. at the airport.Camshaft 10 is a hollow structure, forms separation chamber 29, and an end of this separation chamber 29 is a suction port, and the other end is the air outlet, and the centre is provided with some apertures 30 that communicate with valve cage 14.
When inflammable mixture and waste gas channelling are in crankcase, these (being mixed with oil product) gases can pass through venting cavity 17,15 successively, then enter into valve cage 14, enter again in the disengagement chamber 29 of camshaft 10 of hollow, under the high speed rotating of camshaft, heavier relatively oil droplet moves to the camshaft radial direction, and throws away camshaft 10 by the some apertures 30 on the disengagement chamber 29, and gets back to machine oil chamber 20 by drainback passage again.Enter the further Oil-gas Separation of gas meeting of impacting separation chamber 26, the oil product of acquisition then can be back in the machine oil chamber by return opening, and gas is then discharged through PCV valve 25.
In the disclosed above-mentioned crankcase ventilation structure of CN101270683A, camshaft 10 not only plays the effect of its intrinsic driving gas distribution system work, and in crankcase ventilation structure, camshaft 10 also plays the effect of Oil-gas Separation.Therefore, a plurality of apertures 30 radially need be set on camshaft 10.Thereby, cause this traditional crankcase ventilation structure to have the defective of camshaft 10 processing technology relative complex, thereby make the manufacture cost of camshaft 10 higher, the structural strength of camshaft 10 is descended to some extent.
The model utility content
The purpose of this utility model is to overcome the higher relatively defective of crankcase ventilation structure manufacture difficulty of CN101270683A, and provide a kind of manufacture difficulty the relatively low crankcase ventilation system that is used for motor, and the motor that comprises this crankcase ventilation system.
According to an aspect of the present utility model, a kind of crankcase ventilation system that is used for motor is provided, this crankcase ventilation system comprises: crankcase, the camshaft of the hollow that communicates with this crankcase and the outlet pipe that communicates with described camshaft, wherein, described crankcase ventilation system also comprises gas and oil separating plant, this gas and oil separating plant comprises housing and is positioned at the hydrocarbon filter device of this housing, described housing is installed on the motor, an end of described camshaft is stretched in the inner chamber of described housing, and described hydrocarbon filter device is installed on the described end of the described housing inner chamber of stretching into of described camshaft.
According to another aspect of the present utility model, a kind of motor also is provided, this motor comprises above-mentioned crankcase ventilation system provided by the utility model.
According to crankcase ventilation system provided by the utility model and motor, in this crankcase ventilation system, be provided with special gas and oil separating plant, thereby the camshaft of hollow need not to bring into play its effect as Oil-gas Separation again, therefore aperture radially need be set on camshaft, and the camshaft that only camshaft is processed as vertical hollow gets final product.Obviously, compare with the camshaft of crankcase ventilation structure in the prior art, camshaft structure of the present utility model is more simple, and manufacturing is more easy, also can not cause the reduction of camshaft structure intensity.
Preferably, described crankcase communicates with described camshaft by the inner chamber of described housing.In this case, scurry into crankcase gas (as channelling in the crankcase inflammable mixture and waste gas and/or oil sump in the machine oil gas that volatilizees etc.) at first enter in the housing of gas and oil separating plant, after passing through the filtering separation of hydrocarbon filter device then, gas after the filtration passes through the camshaft of hollow again, discharges by outlet pipe then.
Preferably, described crankcase ventilation system also comprises swivel joint, and described outlet pipe is communicated with the other end of described camshaft by this swivel joint.When motor moved, camshaft was among the high speed rotating state,
Preferably, described camshaft communicates with described outlet pipe by the inner chamber of described housing.In this case, scurry into crankcase gas (as channelling in the crankcase inflammable mixture and waste gas and/or oil sump in the machine oil gas that volatilizees etc.) at first directly enter in the camshaft of hollow, and then the hydrocarbon filter device that enters gas and oil separating plant filters, and the gas after the filtration is discharged by outlet pipe again.
Preferably, described crankcase ventilation system also comprises way to cycle oil, and this way to cycle oil is communicated with between the oil sump of the intracavity bottom of described housing and motor.Utilize way to cycle oil, filter the oil product of acquisition, can be back in the oil sump, thereby help the machine oil in the makeup oil drain pan by the hydrocarbon filter device of gas and oil separating plant.
Preferably, described housing is removably mounted on the motor, so that this crankcase ventilation system is safeguarded.
Preferably, described outlet pipe leads to atmosphere or described outlet pipe communicates with the gas handling system of motor.
Preferably, the arrangement of described camshaft in motor is underneath type, middle or up-set type.
Description of drawings
Fig. 1 to Fig. 3 is respectively the schematic representation of the disclosed crankcase ventilation structure of CN101270683A;
Fig. 4 is the structural representation according to crankcase ventilation system of the present utility model; With
Fig. 5 is the perspective view according to crankcase ventilation system of the present utility model.
The reference character of critical piece
Oil pan 1
Oil strainer 2
Crankcase 3
Machine oil cover 4
Bent axle 5
Connecting rod 6
Piston 7
Cylinder head 8
Distribution device 9
Camshaft 10
Camshaft cover 11
Valve mechanism cover 12
Valve cage 14
Venting cavity 15,17
Gas channel 19
Machine oil chamber 20
End cap 23
PCV valve 25
Impact separation chamber 26
(in the utility model) crankcase 100
(in the utility model) camshaft 200
Gas and oil separating plant 400
Way to cycle oil 700
Swivel joint 900
Embodiment
Below with reference to accompanying drawing embodiment of the present utility model is described in detail.
As shown in Figure 4 and Figure 5, the crankcase ventilation system that is used for motor that the utility model provides comprises: crankcase 100, the camshaft 200 of the hollow that communicates with this crankcase 100, and the outlet pipe 300 that communicates with described camshaft 200, wherein, described crankcase ventilation system also comprises gas and oil separating plant 400, this gas and oil separating plant 400 comprises housing 500 that is installed on the motor and the hydrocarbon filter device 600 that is positioned at this housing 500, an end of described camshaft 200 is stretched in the inner chamber of described housing 500, and described hydrocarbon filter device 600 is installed on the described end of described housing 500 inner chambers of stretching into of described camshaft 200.
Motor typically refers to explosive motor.This motor comprises crankcase 100, accommodates the bent axle (not shown) of motor in the crankcase 100, and for bent axle provides the space that rotatablely moves, to allow normal working of engine.The utility model relates generally to the crankcase ventilation system part that is used for motor, thereby mainly above-mentioned crankcase ventilation system related parts or device are described in detail in this manual, and omit or simplify in the motor with the irrelevant or far parts of above-mentioned crankcase ventilation system or the description of device, for the structure and the setting of these parts or device, can be with reference to existing internal combustion.
Camshaft 200 is a hollow.The camshaft 200 of this hollow communicates with the space of crankcase 100, can be directly to communicate, and also can be by other pipelines or intermediate space and communicate indirectly.Simultaneously, the camshaft 200 of hollow also communicate with outlet pipe 300 (directly communicate or communicate indirectly).Therefore, the effect of the hollow space of this camshaft 200 is the transfer passage as (pressure) gas in the crankcase 100, so that the gas delivery in the crankcase 100 is arrived outlet pipe 300.
In the disclosed crankcase ventilation structure of CN101270683A, camshaft also is provided with radial hole, thereby makes the manufacturing of this camshaft comparatively complicated, and manufacture cost is higher, and the bulk strength of camshaft is descended.And in crankcase ventilation system provided by the utility model, also include gas and oil separating plant 400.In other words, in crankcase ventilation system of the present utility model, utilize gas and oil separating plant to realize separating of oil product and gas, rather than the centrifugal force when utilizing the high speed rotating of camshaft is realized Oil-gas Separation.Therefore, in crankcase ventilation system of the present utility model, aperture radially need be set on camshaft, this camshaft is no longer born the task of Oil-gas Separation, but utilizes its hollow space to be used for the interior pressed gas of conveyer axle case.
Specifically, described gas and oil separating plant 400 comprises housing 500 that is installed on the motor and the hydrocarbon filter device 600 that is positioned at this housing 500, an end of described camshaft 200 is stretched in the inner chamber of described housing 500, and described hydrocarbon filter device 600 is installed on the described end of described housing 500 inner chambers of stretching into of described camshaft 200.
The inner chamber of housing 500 forms a chamber, owing to an end of camshaft 200 is stretched in the inner chamber of housing 500, thereby the inner chamber of housing 500 is communicated with the hollow space of camshaft 200.Simultaneously, hydrocarbon filter device 600 is installed to camshaft 200 and stretches on the end of housing 500 inner chambers, thereby in the rotary course of camshaft 200, is realized the detached job of oil product and gas by this hydrocarbon filter device 600.
By above analysis as can be known, crankcase ventilation system provided by the utility model is by the gas and oil separating plant of realizing Oil-gas Separation that is specifically designed to of other setting, thereby allow camshaft 200 no longer to bear the task of Oil-gas Separation, and then make the manufacturing of camshaft 200 more simple, make the structure of whole crankcase ventilation system more compact, and reduce whole cost.
According to a kind of mode of execution of the present utility model, as shown in Figure 4 and Figure 5, gas and oil separating plant 400 is installed the right-hand member (in orientation shown in Figure 4) of camshaft 200.That is to say that described crankcase 100 communicates with described camshaft 200 by the inner chamber of described housing 500.In this embodiment, not directly to communicate between crankcase 100 and the camshaft 200, but communicate indirectly that is: crankcase 100 at first is communicated in the inner chamber of housing 500, and then is communicated in the hollow space of camshaft 200 again by the inner chamber of housing 500.
With reference to shown in Figure 4, arrow signal crankcase 100 internal pressure gas flow directions in Fig. 4.A part of inflammable mixture in the cylinder and waste gas can be through piston ring and channelling in crankcase 100, in addition, from oil sump 800, can have part machine oil steam also to enter in the crankcase 100, thereby cause increased pressure in the crankcase 100.
Pressed gas (can comprise inflammable mixture, waste gas and/or machine oil steam) in the crankcase 100 at first enters in the inner chamber of housing 500, thereby be drawn in the hydrocarbon filter device 600 that is arranged on camshaft 200 ends, carry out Oil-gas Separation by this hydrocarbon filter device 600 and handle.After handling through Oil-gas Separation, the gas after the separation is transported to outlet pipe 300 through the camshaft 200 of hollow again, and then is discharged into atmosphere or is transported in the gas handling system of motor.Therefore, in this embodiment, after at first handling from the pressed gas of crankcase 100, discharge by outlet pipe 300 again through the Oil-gas Separation of gas and oil separating plant 400.
Be rotatable being tightly connected between camshaft 200 and the outlet pipe 300.This rotatable being tightly connected can be realized in several ways.For example, between outlet pipe 300 and rotatable camshaft 200, suitable bearing is set, and sealing gasket is set in addition, to guarantee the sealing between the two.For another example, preferably, as shown in Figure 4 and Figure 5, described crankcase ventilation system also comprises swivel joint 900, and described outlet pipe 300 is communicated with the other end of described camshaft 200 by this swivel joint 900.The acting as of this swivel joint 900 can guarantee that camshaft 200 keeps and being communicated with of outlet pipe 300, and can also guarantee the sealing between camshaft 200 and the outlet pipe 300 simultaneously under rotation status.
Though in Fig. 4 and mode of execution shown in Figure 5, gas and oil separating plant 400 is installed in the right-hand member of camshaft 200.But the utility model is not limited to this, and according to another kind of mode of execution (not shown), described gas and oil separating plant 400 also can be installed in the left end of camshaft 200, and promptly described camshaft 200 communicates with described outlet pipe 300 by the inner chamber of described housing 500.In this embodiment, the hollow space of camshaft 200 directly communicates with crankcase 100 by an end of camshaft 200, and at the other end of camshaft 200, camshaft 200 is communicated with outlet pipe 300 by the inner chamber of housing 500.
Pressed gas (can comprise inflammable mixture, waste gas and/or machine oil steam) in the crankcase 100 type of flow and the type of flow in Fig. 4 and the mode of execution shown in Figure 5 in this embodiment is slightly different.In the present embodiment, pressed gas at first directly enters in the camshaft 200 of hollow at an end of camshaft 200, handle through the Oil-gas Separation of gas and oil separating plant 400 at the other end of camshaft 200 then, the gas after will separating again is discharged in the outlet pipe 300.But these two kinds of mode of executions all can be realized the purpose of this utility model fully.
Gas after handling through gas and oil separating plant 400 Oil-gas Separation is discharged to outlet pipe 300, obtaining liquid oil product after the Oil-gas Separation then can be stored in the specific container, for example recess is set, obtains oil product and be stored in this recess separating in the bottom of the housing 500 of gas and oil separating plant 400.Perhaps, in crankcase ventilation system of the present utility model, aspirator is set,, the liquid of separating is drawn into the outside of motor as pump.
Preferably, as shown in Figure 4, described crankcase ventilation system also comprises way to cycle oil 700, and this way to cycle oil 700 is communicated with between the oil sump 800 of the intracavity bottom of described housing 500 and motor.Thereby, when the hydrocarbon filter device 600 that is positioned at housing 500 inside carries out the Oil-gas Separation processing, the liquid oil that produces can automatically flow to the intracavity bottom of housing 500, and then flow to the oil sump 800 of motor by described way to cycle oil 700, thereby can avoid the loss of engine motor oil, realize the recycling of oil product.
Preferably, for the ease of the hydrocarbon filter device 600 in the described gas and oil separating plant 400 being safeguarded (as changing or maintenance), described housing 500 is removably mounted on the motor, for example by modes such as bolt connections.
Preferably, described outlet pipe 300 leads to atmosphere, thereby the gas that obtains through Oil-gas Separation processing back can directly be led in the atmosphere; Perhaps, consider the factor of environmental protection, described outlet pipe 300 also can communicate with the gas handling system of motor, thereby this gas is introduced in the cylinder, participates among the work by combustion process.
Gas and oil separating plant 400 of the present utility model can be selected from existing various device or the instrument that liquids and gases are separated that have with hydrocarbon filter device 600.For example, U.S. Patent No. 6640792 disclosed hydrocarbon filter devices.
Crankcase ventilation system provided by the utility model is applicable to various explosive motors, as the internal-combustion engine of various petrol engine, diesel engine or other fuel.And structure of the present utility model there is no specific (special) requirements to the set-up mode of camshaft, communicates as long as can guarantee the camshaft of crankcase, hollow and outlet pipe.Therefore, the arrangement of described camshaft 200 in motor can be underneath type, middle or up-set type.
More than described the concrete structure and the running principle thereof of crankcase ventilation system provided by the utility model, in addition, the utility model also provides a kind of motor, and this motor comprises above-mentioned crankcase ventilation system.Utilize this crankcase ventilation system, can avoid making the overall construction intensity of camshaft to descend, can also reduce manufacture cost.
Above described crankcase ventilation system provided by the utility model and motor in conjunction with mode of execution of the present utility model, still, this specification should be considered as descriptive or indicative, rather than to restriction of the present utility model.The utility model is not limited to above-mentioned text description, under the prerequisite that does not break away from the utility model essential scope, above-mentioned feature of the present utility model can combine separately and/or in combination in any suitable manner, thereby can make various modifications, replacement and variation.
Claims (9)
1. crankcase ventilation system that is used for motor, this crankcase ventilation system comprises: crankcase (100), the camshaft (200) of the hollow that communicates with this crankcase (100), and the outlet pipe (300) that communicates with described camshaft (200), it is characterized in that, described crankcase ventilation system also comprises gas and oil separating plant (400), this gas and oil separating plant (400) comprises housing (500) that is installed on the motor and the hydrocarbon filter device (600) that is positioned at this housing (500), an end of described camshaft (200) is stretched in the inner chamber of described housing (500), and described hydrocarbon filter device (600) is installed on the described end of stretching into described housing (500) inner chamber of described camshaft (200).
2. crankcase ventilation system according to claim 1 is characterized in that, described crankcase (100) communicates with described camshaft (200) by the inner chamber of described housing (500).
3. crankcase ventilation system according to claim 2 is characterized in that, described crankcase ventilation system also comprises swivel joint (900), and described outlet pipe (300) is communicated with the other end of described camshaft (200) by this swivel joint (900).
4. crankcase ventilation system according to claim 1 is characterized in that, described camshaft (200) communicates with described outlet pipe (300) by the inner chamber of described housing (500).
5. according to any described crankcase ventilation system in the claim 1 to 4, it is characterized in that, described crankcase ventilation system also comprises way to cycle oil (700), and this way to cycle oil (700) is communicated with between the oil sump (800) of the intracavity bottom of described housing (500) and motor.
6. crankcase ventilation system according to claim 5 is characterized in that, described housing (500) is removably mounted on the motor.
7. crankcase ventilation system according to claim 5 is characterized in that, described outlet pipe (300) leads to atmosphere, and perhaps described outlet pipe (300) communicates with the gas handling system of motor.
8. crankcase ventilation system according to claim 5 is characterized in that, the arrangement of described camshaft (200) in motor is underneath type, middle or up-set type.
9. motor is characterized in that, this motor comprises any described crankcase ventilation system among the claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020117781XU CN201526354U (en) | 2010-02-23 | 2010-02-23 | Crankcase ventilation system for an engine and an engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020117781XU CN201526354U (en) | 2010-02-23 | 2010-02-23 | Crankcase ventilation system for an engine and an engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526354U true CN201526354U (en) | 2010-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020117781XU Expired - Lifetime CN201526354U (en) | 2010-02-23 | 2010-02-23 | Crankcase ventilation system for an engine and an engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526354U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192041A (en) * | 2010-12-31 | 2011-09-21 | 宁波易能动力科技有限公司 | Four-stroke internal-combustion engine for handheld tool |
| CN102434250A (en) * | 2011-11-23 | 2012-05-02 | 奇瑞汽车股份有限公司 | Gas-oil separation structure with crankcase for ventilation and operation method thereof |
| CN103228874A (en) * | 2010-08-10 | 2013-07-31 | 蒂森克虏伯普利斯坦技术中心股份公司 | Hollow body having an integrated oil separating device |
| CN104863666A (en) * | 2014-07-10 | 2015-08-26 | 北汽福田汽车股份有限公司 | Oil and gas separation channel structure of crank case as well as crank case assembly comprising structure |
| CN107489485A (en) * | 2016-08-22 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Oil-gas separating device of engine and there is its engine |
| CN107489489A (en) * | 2016-12-30 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Gas and oil separating plant and engine |
| CN109281730A (en) * | 2018-09-25 | 2019-01-29 | 浙江锋锐发动机有限公司 | Crankcase ventilation system and automobile |
-
2010
- 2010-02-23 CN CN201020117781XU patent/CN201526354U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228874A (en) * | 2010-08-10 | 2013-07-31 | 蒂森克虏伯普利斯坦技术中心股份公司 | Hollow body having an integrated oil separating device |
| CN103228874B (en) * | 2010-08-10 | 2015-11-25 | 蒂森克虏伯普利斯坦技术中心股份公司 | With the hollow body of integrated oil separating device |
| CN102192041A (en) * | 2010-12-31 | 2011-09-21 | 宁波易能动力科技有限公司 | Four-stroke internal-combustion engine for handheld tool |
| CN102434250A (en) * | 2011-11-23 | 2012-05-02 | 奇瑞汽车股份有限公司 | Gas-oil separation structure with crankcase for ventilation and operation method thereof |
| 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 |
| CN104863666A (en) * | 2014-07-10 | 2015-08-26 | 北汽福田汽车股份有限公司 | Oil and gas separation channel structure of crank case as well as crank case assembly comprising structure |
| CN104863666B (en) * | 2014-07-10 | 2017-08-04 | 北汽福田汽车股份有限公司 | A kind of crankcase Oil-gas Separation channel design and the crankcase assembly with it |
| CN107489485A (en) * | 2016-08-22 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Oil-gas separating device of engine and there is its engine |
| CN107489489A (en) * | 2016-12-30 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Gas and oil separating plant and engine |
| CN109281730A (en) * | 2018-09-25 | 2019-01-29 | 浙江锋锐发动机有限公司 | Crankcase ventilation system and automobile |
| CN109281730B (en) * | 2018-09-25 | 2020-04-21 | 浙江锋锐发动机有限公司 | Crankcase ventilation system and car |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100714 |