CN208040478U - The ventilating system and vehicle of crankcase - Google Patents
The ventilating system and vehicle of crankcase Download PDFInfo
- Publication number
- CN208040478U CN208040478U CN201820124386.0U CN201820124386U CN208040478U CN 208040478 U CN208040478 U CN 208040478U CN 201820124386 U CN201820124386 U CN 201820124386U CN 208040478 U CN208040478 U CN 208040478U
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- crankcase
- gas
- oil
- separation structure
- ventilating system
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Abstract
The utility model discloses a kind of ventilating system of crankcase and vehicle, the logical wind system of crankcase includes：Crankcase；Gas oil separation structure, the gas oil separation structure are arranged between the exhaust outlet of the crankcase and the ventilation opening of cylinder head；Anti- gas reflux apparatus is additionally provided between the ventilation opening and the exhaust outlet of the crankcase of the wherein described cylinder head, the anti-gas reflux apparatus is suitable for opening when gas flows to the ventilation opening of the cylinder head from the exhaust outlet of the crankcase, be closed when gas flows to the exhaust outlet of the crankcase from the ventilation opening of the cylinder head.The ventilating system of axle box according to the present utility model can ensure the pressure stability in crankcase, prevent mixed gas from flowing back.
Description
Technical field
The utility model is related to vehicular field, more particularly to the ventilating system and vehicle of a kind of crankcase.
Background technology
In the related technology, the ventilating system of crankcase can not ensure that the pressure when engine is shut down in crankcase keeps negative
Pressure；Meanwhile the exploitation of Modern Engine requires respiratory system integrated with engine component, avoids unnecessary space waste,
The oil-gas separation efficiency of engine is relatively low at present, wants to reach higher separative efficiency by existing gas oil separation structure and compare
It is difficult.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
With a kind of crankcase ventilation system of novel proposition, the ventilating system of the crankcase can ensure the pressure stability in crankcase, prevent
Only mixed gas flows back.
The utility model also proposes a kind of vehicle with above-mentioned ventilating system.
The ventilating system of crankcase according to the present utility model, including：Crankcase；Gas oil separation structure, the oil gas point
From structure setting between the exhaust outlet of the crankcase and the ventilation opening of cylinder head；The ventilation opening mouth of the wherein described cylinder head with
It is additionally provided with anti-gas reflux apparatus between the exhaust outlet of the crankcase, the anti-gas reflux apparatus is suitable in gas from institute
It states and is opened when the exhaust outlet of crankcase flows to the ventilation opening of the cylinder head, flows to institute from the ventilation opening of the cylinder head in gas
It is closed when the exhaust outlet for stating crankcase.
The ventilating system of crankcase according to the present utility model is returned by the way that anti-gas is arranged between crankcase and cylinder head
Device is flowed, ensure that the pressure value stabilization in crankcase, reduces the influence due to pressure change to crankcase seals performance, simultaneously
Pollution of the burning waste gas to machine oil is avoided, the service life of engine and crankcase ventilation system is improved.
One embodiment according to the present utility model, the anti-gas reflux apparatus are check valve.
One embodiment according to the present utility model, the gas oil separation structure include：Oil gas crude separation structure, the oil
The check valve is provided between rough separated structure and the crankcase.
One embodiment according to the present utility model, the oil gas crude separation structure are integration member with the check valve.
One embodiment according to the present utility model, the check valve include：Valve body is provided with gas stream in the valve body
Circulation passage；Spool, the spool are movably disposed in the valve body to open or close the air ventilation passage；Wherein
The oil gas crude separation device is arranged in the air ventilation passage.
One embodiment according to the present utility model, at least part of diameter of the air ventilation passage gas from
The crankcase flows to gradually to be increased on the direction of the gas oil separation structure, and the air ventilation passage has bore smaller
Contracting dead end and the larger open end of bore, the spool are suitable for being pressed on the internal perisporium of the necking end, and the spool is separate
When the necking section, air ventilation passage conducting.
One embodiment according to the present utility model, the check valve further include：Holddown spring, the one of the holddown spring
End is connected with the valve body, and the other end of the holddown spring is connected with the spool.
One embodiment according to the present utility model, the oil gas crude separation structure include at least one layer of woven wire.
One embodiment according to the present utility model, the woven wire are that multiple and quantity is adjustable.
Vehicle according to the present utility model is briefly described below.
The ventilating system of the crankcase of above-described embodiment is provided on vehicle according to the present utility model, due to according to this reality
With the crankcase ventilation system for being provided with above-described embodiment on novel vehicle, therefore the pressure in the crankcase of the vehicle is steady
Fixed, sealing effect is good, and service life of aeroengine is long.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram according to the check valve of the utility model embodiment；
Fig. 2 is the sectional view according to the check valve of the utility model embodiment；
Fig. 3 is the structural schematic diagram according to the crankcase of the utility model embodiment；
Fig. 4 is the position view according to the gas oil separation structure of the utility model embodiment.
Reference numeral：
Crankcase 110, gas oil separation structure 120, oil gas crude separation structure 121, check valve 130, valve body 131, spool
132, holddown spring 133, air ventilation passage 134.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings.Below by
The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and should not be understood as new to this practicality
The limitation of type.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on ... shown in the drawings
Or position relationship, be merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the utility model
System.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be
Mechanical connection can also be electrical connection or can communicate each other；It can be directly connected, the indirect phase of intermediary can also be passed through
Even, can be the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
As emission regulation demands further increase, it is desirable that must keep negative pressure at the moment in crankcase, avoid vehicle launch
The problem of at moment, a large amount of oil gas that the positive pressure in crankcase is brought participate in burning and discharge quality is caused to be deteriorated.Meanwhile people couple
The oil and gas separating system of engine is increasingly paid attention to, and increasingly harsher, oil gas point is required crankcase ventilation system separating effect
From structure while meeting legislation discharge requirement, plays and can not grind in the performance and raising fuel economy for improving engine
The effect gone out.And due to the compact-sized and inexpensive design requirement of Modern Engine, the cloth of crankcase ventilation system empties
Between it is smaller and smaller, and integrated with engine component, therefore compact-sized and efficient separative efficiency becomes at present point
Design focal point from system.
Mainly the gas scurried out inside crankcase is discharged in time for the purpose of design of crankcase ventilation system, is sent into burning
Room is burnt, and avoids engine crankcase internal pressure is excessive from influencing the sealing of each sealing surface of engine, prevent from scurrying out from combustion chamber
The generation of the problems such as gaseous contamination machine oil, parts corrosion.
Gas is mainly leaked to through piston in crankcase by the exhaust gas after burning Indoor Combustion in crankcase, enters bent axle
It is high-temperature gas in case, mainly thus gas generates air-fuel mixture gas after being mixed with the machine oil in oil sump, crankcase oils
Gas mixture enters valve chamber cover component by cylinder head ventilation opening again upwards through cylinder body gas blowby hole, through the fan in valve chamber cover
Palace structure carries out crude separation, and mixture continues to move forward into the smart separation of cyclone type respirator progress, and the machine oil after separation is through oil return
To oil sump, the gas after separation introduces gas handling system for hole and oil return pipe of respirator, it is therefore necessary to improve oil-gas separation efficiency, protect
Gas engine oil carrying quantity after card separation is as few as possible.
Existing crankcase ventilation system can not ensure when engine is shut down in crankcase the case where negative pressure, meanwhile, it is existing
Exploitation for engine requires respiratory system integrated with engine component, avoids unnecessary space waste, at present engine
Oil-gas separation efficiency it is relatively low, want to reach higher separative efficiency relatively difficult by existing gas oil separation structure.It takes into account
It is inexpensive, simple in structure, processing and manufacturing is simple, easily arrangement and separating effect is preferable and can guarantee that the structure of crankcase negative pressure is
Problem to be solved at present.
The ventilating system of crankcase according to the present utility model is described in detail below according to Fig. 1-Fig. 4.
As shown in figure 3, the ventilating system of crankcase according to the present utility model includes crankcase 110 and gas oil separation structure
120。
Gas oil separation structure 120 is arranged between the exhaust outlet of crankcase 110 and the ventilation opening of cylinder head；Wherein cylinder head
Ventilation opening and the exhaust outlet of crankcase 110 between be additionally provided with anti-gas reflux apparatus, anti-gas reflux apparatus is suitable in gas
It opened when body flows to the ventilation opening of cylinder head from the exhaust outlet of crankcase 110, flow to crankcase from cylinder head ventilation opening in gas
It is closed when 110 exhaust outlet.
Gas oil separation structure 120 is arranged between the exhaust outlet of crankcase 110 and the ventilation opening of cylinder head, crankcase 110
Interior gas mixture enters gas oil separation structure 120 via the exhaust outlet of crankcase 110, is entered after Oil-gas Separation
In cylinder head.Anti- gas reflux apparatus be suitable for when gas flows to the ventilation opening of cylinder head from the exhaust outlet of crankcase 110 open,
It is closed when gas flows to the exhaust outlet of crankcase 110 from the ventilation opening of cylinder head.
In the related technology, when the engine is working, it is negative pressure in crankcase 110, after engine is shut down, due to burning
The mixed gas of exhaust gas and machine oil steam flows back, and resulting in crankcase ventilation system can not ensure that the pressure in crankcase 110 is steady
Fixed, mixed gas reflux makes the pressure rise in crankcase 110, influences the sealing effect of engine, while the mixing to flow back
Gas can pollute machine oil, lead to parts corrosion.
Gas oil separation structure 120 in the utility model is used to divide the mixed gas of burning waste gas and machine oil steam
From the gas after separation, which can be re-introduced into combustion chamber, to burn, to meet emission request.
Anti- gas reflux apparatus is arranged between gas oil separation structure 120 and crankcase 110, works as engine work
When, burning waste gas and the mixed gas of machine oil steam can be entered by anti-gas reflux apparatus in gas oil separation structure 120
Or the mixed gas of burning waste gas and machine oil steam can pass sequentially through gas oil separation structure 120 and anti-gas reflux apparatus into
Enter into cylinder head, so that the pressure in crankcase 110 is maintained at a stable pressure value, prevents the pressure in crankcase 110
Power is excessively high；After engine stop, anti-gas reflux apparatus can be effectively prevented the gaseous mixture of burning waste gas and machine oil steam
Body flows back, and to ensure the pressure stability in crankcase 110, prevents from reducing crankcase due to the hypertonia in crankcase 110
110 sealing effect can also avoid burning waste gas to the pollution of machine oil, prevent the rotten of machine oil.
The ventilating system of crankcase 110 according to the present utility model, it is anti-by being arranged between crankcase 110 and cylinder head
Gas reflux apparatus ensure that the pressure value stabilization in crankcase 110, reduce since pressure change is to 110 leakproofness of crankcase
The influence of energy, while pollution of the burning waste gas to machine oil is avoided, improve the service life of engine and crankcase ventilation system.
One embodiment according to the present utility model, anti-gas reflux apparatus are check valve 130, and check valve 130 can have
The reflux for avoiding to effect mixed gas, further ensures the gas pressure value stabilization in crankcase 110, reduces crankcase 110
The variation of interior gas pressure, to ensure the sealing effect of crankcase 110.
One embodiment according to the present utility model, gas oil separation structure 120 include oil gas crude separation structure 121, oil gas
It can be provided with check valve 130 between crude separation structure 121 and crankcase 110 or check valve 130 is arranged in oil gas crude separation
Between structure 121 and the ventilation opening of cylinder head.Oil gas crude separation structure 121 can carry out crude separation to oil gas, will be relatively large in diameter
Oil mist particles detached, to improve separative efficiency of the gas oil separation structure 120 to mixed gas.
Further, check valve 130 and gas and oil separating plant 121 are integration member, improve in crankcase ventilation system zero
The integrated level of part reduces the efficiency of assembling of cost crankcase.
As depicted in figs. 1 and 2, one embodiment according to the present utility model, check valve 130 include valve body 131 and spool
132.Wherein, it is provided with air ventilation passage 134 in valve body 131；Spool 132 is movably disposed in valve body 131 to open
Or close air ventilation passage 134；Oil gas crude separation device is arranged in air ventilation passage 134.
After the gas pressure in crankcase 110 reaches certain pressure value, gas pressure makes spool 132 move, and will
Air ventilation passage 134 is opened, so that bent axle can be discharged by air ventilation passage 134 in the mixed gas in crankcase 110
Case 110；After engine stop works, the pressure reduction in crankcase 110, spool 132 will close air ventilation passage 134,
To prevent mixed gas from flowing back into crankcase 110, to ensure the pressure stability in crankcase 110.By oil gas crude separation device
It is arranged in air ventilation passage 134, to improve the part degree of integration of crankcase ventilation system, reduces crankcase ventilation system
Difficulty of processing, improve gas oil separation structure 120 working efficiency.
One embodiment according to the present utility model, at least part of diameter of air ventilation passage 134 gas from
Crankcase 110 flows to gradually to be increased on the direction of gas oil separation structure 120, the contracting that air ventilation passage 134 has bore smaller
Mouthful end and the larger open end of bore, spool 132 is suitable for being pressed on the internal perisporium of necking end, when spool 132 is far from necking end,
Air ventilation passage 134 is connected.
Specifically, after the gas pressure in crankcase 110 reaches certain pressure value, spool 132 towards gas stream all
The increased direction movement of diameter in road 134 and spool 132 are moved towards open end, so that spool 132 can not be with gas stream all
The peripheral wall in road 134 contacts, and then check valve 130 is opened so that mixed gas can enter Oil-gas Separation from crankcase 110
In structure 120.
When the gas pressure in crankcase 110 does not reach certain pressure value, spool 132 compresses the peripheral wall of necking end
On, air ventilation passage 134 is closed, the reflux of mixed gas is avoided.
One embodiment according to the present utility model, check valve 130 further include holddown spring 133, and the one of holddown spring 133
End is connected with valve body 131, and the other end of holddown spring 133 is connected with spool 132.
Specifically, when the gas pressure in crankcase 110 is less than the elastic force of holddown spring 133, holddown spring 133 is by valve
Core 132 is pressed on air ventilation passage 134 at least partially, and spool 132 closes air ventilation passage 134, ensures unidirectional
Valve 130 is in closed state, prevents the reflux of mixed gas；Gas pressure in crankcase 110 is more than holddown spring 133
When elastic force, check valve 130 is connected, so that the mixed gas in crankcase 110 enters oil gas point by air ventilation passage 134
From in structure 120.
By the way that holddown spring 133 is arranged on check valve 130 so that the opening and closing of check valve 130 are sensitiveer, protect
The pressure stability in crankcase 110 has been demonstrate,proved, the reflux of mixed gas is further prevented, has improved the steady of crankcase ventilation system
It is qualitative.
One embodiment according to the present utility model, oil gas crude separation structure 121 be include at least one layer of woven wire, gold
Can effectively mist of oil be detached by belonging to silk screen, and the oil mist particles by diameter at 0.4 μm or more are filtered, and alleviate oil gas
The operating pressure of smart separated structure improves the working efficiency of gas oil separation structure 120, ensure that crankcase ventilation system indirectly
The stability of system.
Further, woven wire is that multiple and quantity is adjustable, and the quantity by increasing woven wire can be further
Crude separation is carried out to oil mist particles, oil mist particles is reduced and enters the oil gas essence separated structure in valve chamber cover, to improve oil
The working efficiency of gas essence separated structure.
Vehicle according to the present utility model is briefly described below.
The ventilating system of the crankcase 110 of above-described embodiment is provided on vehicle according to the present utility model, due to basis
The ventilating system of the crankcase 110 of above-described embodiment, therefore the crankcase 110 of the vehicle are provided on the vehicle of the utility model
Interior pressure stability, sealing effect is good, and service life of aeroengine is long.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combines and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. a kind of ventilating system of crankcase, which is characterized in that including：
Crankcase (110)；
Gas oil separation structure (120), exhaust outlet and gas of gas oil separation structure (120) setting in the crankcase (110)
Between the ventilation opening of cylinder cap；Wherein
Anti- gas reflux apparatus, institute are additionally provided between the ventilation opening of the cylinder head and the exhaust outlet of the crankcase (110)
Anti- gas reflux apparatus is stated to be suitable for beating when gas flows to the ventilation opening of the cylinder head from the exhaust outlet of the crankcase (110)
It opens, closed when gas flows to the exhaust outlet of the crankcase (110) from the ventilation opening of the cylinder head.
2. the ventilating system of crankcase according to claim 1, which is characterized in that the anti-gas reflux apparatus is unidirectional
Valve (130).
3. the ventilating system of crankcase according to claim 2, which is characterized in that gas oil separation structure (120) packet
It includes：Oil gas crude separation structure (121) is provided with described between the oil gas crude separation structure (121) and the crankcase (110)
Check valve (130).
4. the ventilating system of crankcase according to claim 3, which is characterized in that the oil gas crude separation structure (121)
It is integration member with the check valve (130).
5. the ventilating system of crankcase according to claim 4, which is characterized in that the check valve (130) includes：
Valve body (131), the valve body (131) is interior to be provided with air ventilation passage (134)；
Spool (132), the spool (132) are movably disposed in the valve body (131) to open or close the gas
Circulation passage (134)；Wherein
The oil gas crude separation device setting is in the air ventilation passage (134).
6. the ventilating system of crankcase according to claim 5, which is characterized in that the air ventilation passage (134)
At least part of diameter flows on the direction of the gas oil separation structure (120) gradually in gas from the crankcase (110)
Increase, the larger open end of the necking end and bore that the air ventilation passage (134) has bore smaller, the spool
(132) it is suitable for being pressed on the internal perisporium of the necking end, when the spool (132) is far from the necking end, the gas
Circulation passage (134) is connected.
7. the ventilating system of crankcase according to claim 6, which is characterized in that the check valve (130) further includes：Pressure
Tight spring (133), one end of the holddown spring (133) are connected with the valve body (131), the holddown spring (133) it is another
One end is connected with the spool (132).
8. the ventilating system of the crankcase according to any one of claim 2-7, which is characterized in that the oil gas crude separation
Structure (121) includes at least one layer of woven wire.
9. the ventilating system of crankcase according to claim 8, which is characterized in that the woven wire is multiple and quantity
It is adjustable.
10. a kind of vehicle, which is characterized in that including crankcase (110) ventage described in any one of claim 1-9
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124386.0U CN208040478U (en) | 2018-01-24 | 2018-01-24 | The ventilating system and vehicle of crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124386.0U CN208040478U (en) | 2018-01-24 | 2018-01-24 | The ventilating system and vehicle of crankcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208040478U true CN208040478U (en) | 2018-11-02 |
Family
ID=63954324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820124386.0U Active CN208040478U (en) | 2018-01-24 | 2018-01-24 | The ventilating system and vehicle of crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208040478U (en) |
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2018
- 2018-01-24 CN CN201820124386.0U patent/CN208040478U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181206 Address after: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Patentee after: Beiqi Futian Automobile Co., Ltd. Address before: 100102 No.1 Courtyard Building, Futong East Street, Chaoyang District, Beijing Patentee before: Auto (China) Co., Ltd. |
|
| TR01 | Transfer of patent right |