CN207316080U - A kind of engine Pcv valve - Google Patents
A kind of engine Pcv valve Download PDFInfo
- Publication number
- CN207316080U CN207316080U CN201721370456.2U CN201721370456U CN207316080U CN 207316080 U CN207316080 U CN 207316080U CN 201721370456 U CN201721370456 U CN 201721370456U CN 207316080 U CN207316080 U CN 207316080U
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- spring
- housing
- spool
- pcv valve
- resisted against
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Abstract
The utility model provides a kind of engine Pcv valve, belongs to technical field of automobile parts.It solves the problems, such as that existing Pcv valve noise is big.This engine Pcv valve includes housing, one end of housing has air inlet, the other end of housing has gas outlet, spool is equipped with housing, first spring and second spring, the end of spool one end has the annular gear edge of outwardly setting, first spring pocket is outside spool and one end of the first spring is resisted against annular gear along upper, the other end of first spring is resisted against on housing, there are several spaced sections on the lateral wall on annular gear edge, annular gear along being cased with the cushion collar made of elastomeric material outside, when spool overcomes the elastic force of the first spring, the other end of spool can be resisted against in second spring.This engine Pcv valve has the advantages that noise is small.
Description
Technical field
The utility model belongs to technical field of automobile parts, is related to a kind of engine Pcv valve.
Background technology
PCV, which is that English Positive Crankcase Ventilation (positive crankcase ventilation (PCV)) are triliteral, to be write a Chinese character in simplified form,
Chinese means crankcase (or oil sump) active ventilated control system.The main function of Pcv valve is:By the gas in crankcase
Body imports inlet manifold by Pcv valve, and has a small amount of air to be directly entered inlet manifold through Pcv valve by air cleaner, this
Avoid to freeze at air throttle, the insufficient, deterioration of emission of burning phenomena such as, prevent gas blowby from entering air, while prevent machine oil
It is rotten.
Existing Pcv valve, such as Chinese patent literature data disclose the mounting structure [application number of Pcv valve：
201510736553.8；Application publication number：CN105569770A], it is using between the cylinder head and inlet manifold of engine
Engagement makes the downstream of the upstream side passage portion of the blow-by gas path of the cylinder head and the blow-by gas path of inlet manifold
Side passage portion connection, is built-in between cylinder head and inlet manifold in a manner of two passage portions across blow-by gas path
Pcv valve for the flow for adjusting blow-by gas, wherein, which possesses for by the composition surface of cylinder head and air inlet
The gasket sealed between the composition surface of manifold, is equipped with Pcv valve sealing on gasket, the Pcv valve sealing by between
It will be sealed between the two between one of cylinder head and inlet manifold and the valve casing of Pcv valve.
The Pcv valve of this kind of structure is plunger type Pcv valve, and spool is solid, i.e., spool is heavier, and inertia is big, and is lacked
Few corresponding buffer structure between spool and housing to isolating, and Pcv valve is because engine operating condition changes, the spool of high-speed cruising
Just inevitably tapped with housing, percussion causes under some operating modes that abnormal sound is serious, and noise is big, reduces the comfortable of automobile
Property.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, it is proposed that a kind of engine Pcv valve,
The technical problem of solution is how to reduce the noise of Pcv valve generation.
The purpose of this utility model can be realized by following technical proposal：A kind of engine Pcv valve, including housing, institute
Stating one end of housing has air inlet, and the other end of the housing has gas outlet, spool, the first spring are equipped with the housing
And second spring, the end of described spool one end have the annular gear edge of outwardly setting, first spring pocket is in valve
Core is outer and one end of first spring is resisted against annular gear along upper, and the other end of first spring is resisted against on housing, its
Be characterized in that there are several spaced sections on the lateral wall on the annular gear edge, the annular gear along be cased with outside by
Cushion collar made of elastomeric material, when the spool overcomes the elastic force of the first spring, the other end of the spool can be resisted against
In second spring.
When not ventilating, spool is resisted against housing under the action of the first spring force has one end of air inlet；During ventilation,
Gas is entered in housing from air inlet, and gas push spool overcomes the elastic force of the first spring, and makes spool and second spring phase
Contact, at this time spool unlatching, the setting of section make annular gear have gap along between the madial wall of housing, which can make
Gas is from housing by the way that gas is entered in inlet manifold by the air inlet and gas outlet of housing.Cushion collar is by rubber material
Material is made, and cushion collar has elasticity, can be directly by annular gear along being embedded into cushion collar during installation, easy for installation, cushion collar
Setting spool and housing are separated, make between spool and housing formed a buffer layer, avoid spool from directly tapping housing, drop
Low noise, improves the comfort of automobile.
In a kind of above-mentioned engine Pcv valve, the madial wall of the cushion collar and the lateral wall on annular gear edge are close to close
Set.This kind of structure makes cushion collar and annular gear be set along tight fit, and gap is not present between in cushion collar and annular gear, makes to delay
Rush set to be hardly damaged, cushion collar plays more preferable buffering effect, avoids cushion collar from producing abnormal sound when touching housing, also avoids spool
Housing is directly tapped, reduces noise, improves the comfort of automobile.
In a kind of above-mentioned engine Pcv valve, there is step surface in the housing, the second spring is resisted against step
On face, and the second spring is connected at step surface.Step surface plays the role of positioning second spring, makes second spring will not
Deviate setting position, second spring can preferably position spool, so as to avoid spool from being tapped with housing, reduce noise.
In a kind of above-mentioned engine Pcv valve, the gas outlet is in flared.Gas outlet allows gas to enough in flared
Preferably discharge, prevents gas backflow, improves the stability of spool, avoid spool from being tapped with housing, reduces noise.
In a kind of above-mentioned engine Pcv valve, the middle in the housing is equipped with baffle ring, and the one of first spring
End is resisted against annular gear along upper, and the other end of first spring is resisted against on baffle ring, and the spool part is threaded through in baffle ring.
The setting of baffle ring improves the stability of the first spring, the first spring is not deviated by setting position, so as to avoid spool and housing
Tap, reduce noise.
In a kind of above-mentioned engine Pcv valve, the housing includes air inlet pipe and air outlet pipe, the air inlet pipe and outlet
Pipe is connected by way of vibrating friction welding (FW), and the baffle ring is located at the junction of air inlet pipe and air outlet pipe.Air inlet pipe and outlet
The connected firmness of pipe is high, good airproof performance, and this kind of structure facilitates the installation of baffle ring.
In a kind of above-mentioned engine Pcv valve, the lateral wall of the air inlet pipe is equipped with the first sealing ring, the outlet
The lateral wall of pipe is equipped with the second sealing ring.First sealing ring and the second sealing ring play the role of sealing, make gas will not
Pass through at from this.
Compared with prior art, engine Pcv valve provided by the utility model in spool annular gear along being cased with outside by rubber
Cushion collar made of material, the setting of cushion collar separate spool and housing, make to form a buffer layer between spool and housing,
Avoid spool from directly tapping housing, reduce noise, improve the comfort of automobile.
Brief description of the drawings
Fig. 1 is the overall structure sectional view of this engine Pcv valve.
Fig. 2 is the explosive view of this engine Pcv valve spool and cushion collar.
In figure, 1, housing；11st, air inlet；12nd, gas outlet；13rd, step surface；14th, air inlet pipe；15th, air outlet pipe；2nd, spool；
3rd, the first spring；4th, second spring；5th, annular gear edge；6th, section；7th, cushion collar；8th, baffle ring；9th, the first sealing ring；10th, second
Sealing ring.
Embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, this engine Pcv valve includes housing 1, spool 2, the first spring 3, second spring 4 and cushion collar 7.
Housing 1 includes air inlet pipe 14 and air outlet pipe 15, and air inlet pipe 14 and air outlet pipe 15 are made by nylon material, air inlet pipe
14 lateral wall is equipped with the first sealing ring 9, and the lateral wall of air outlet pipe 15 is equipped with the second sealing ring 10.In the present embodiment, into
Tracheae 14 is connected with air outlet pipe 15 by way of vibrating friction welding (FW), and in actual production, air inlet pipe 14 and air outlet pipe 15 can
It is connected in a manner of being connected by screw thread.The junction of air inlet pipe 14 and air outlet pipe 15 is equipped with baffle ring 8, one end of air inlet pipe 14
With air inlet 11, one end of air outlet pipe 15 has gas outlet 12, and gas outlet 12 is in flared.
Spool 2, the first spring 3 and second spring 4 are all provided with the case 1, as shown in Fig. 2, the end tool of 2 one end of spool
It is outwardly convex go out setting annular gear along 5, the other end of spool 2 be in cusp-shaped, and in the present embodiment, annular keeps off the lateral wall along 5
Upper to have three spaced sections 6, in actual production, annular gear can have two or five along 5 lateral wall
A spaced section 6, annular gear are cased with cushion collar 7 made of elastomeric material, the madial wall and ring of cushion collar 7 along outside 5
Shape gear is close to close along 5 lateral wall to be set.
There is step surface 13, second spring 4 is resisted against on step surface 13, and second spring 4 is connected in step surface in housing 1
At 13, one end of the first spring 3 is resisted against annular gear along 5, and the other end of the first spring 3 is resisted against on baffle ring 8, spool 2
Divide and be threaded through in baffle ring 8.
When not ventilating, spool 2 is resisted against housing 1 under the action of 3 elastic force of the first spring has one end of air inlet 11；It is logical
During gas, gas is entered in housing 1 from air inlet 11, and gas push spool 2 overcomes the elastic force of the first spring 3, and make spool 2 with
Second spring 4 is in contact, and the tip end of spool 2 is threaded through in second spring 4, and spool 2 is opened at this time, gas by Pcv valve into
Enter into inlet manifold；No longer air inlet when, under the action of the first spring 3 and second spring 4, spool 2 reset blocks air inlet
11。
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although housing 1, air inlet 11, gas outlet 12, step surface 13, air inlet pipe 14, air outlet pipe is used more herein
15th, spool 2, the first spring 3, second spring 4, annular gear are close along 5, section 6, cushion collar 7, baffle ring 8, the first sealing ring 9, second
The grade term of seal 10, but it does not preclude the possibility of using other terms.The use of these items is only for more easily retouch
State and explain the essence of the utility model；Being construed as any one of the additional limitations is all and the utility model spirit phase
Run counter to.
Claims (7)
1. a kind of engine Pcv valve, including housing (1), one end of the housing (1) has air inlet (11), the housing (1)
The other end there are gas outlet (12), spool (2), the first spring (3) and second spring (4) are equipped with the housing (1), it is described
The annular gear that the end of spool (2) one end has outwardly setting is sleeved on spool (2) outside along (5), first spring (3)
And one end of first spring (3) is resisted against annular gear along (5), the other end of first spring (3) is resisted against housing
(1) on, it is characterised in that the annular gear has several spaced sections (6), the ring along the lateral wall of (5)
Shape gear is cased with cushion collar (7) made of elastomeric material along outside (5), when the spool (2) overcomes the elastic force of the first spring (3)
When, the other end of the spool (2) can be resisted against in second spring (4).
2. a kind of engine Pcv valve according to claim 1, it is characterised in that the madial wall and ring of the cushion collar (7)
The lateral wall of shape gear along (5), which is close to close, to be set.
3. a kind of engine Pcv valve according to claim 1 or 2, it is characterised in that there is step in the housing (1)
Face (13), the second spring (4) are resisted against on step surface (13), and the second spring (4) is connected in step surface (13) place.
4. a kind of engine Pcv valve according to claim 1 or 2, it is characterised in that the gas outlet (12) is in flaring
Shape.
A kind of 5. engine Pcv valve according to claim 1 or 2, it is characterised in that the middle in the housing (1)
Equipped with baffle ring (8), one end of first spring (3) is resisted against annular gear along (5), the other end of first spring (3)
It is resisted against on baffle ring (8), the spool (2) is partly threaded through in baffle ring (8).
6. a kind of engine Pcv valve according to claim 5, it is characterised in that the housing (1) includes air inlet pipe (14)
With air outlet pipe (15), the air inlet pipe (14) is connected with air outlet pipe (15) by way of vibrating friction welding (FW), the baffle ring (8)
Positioned at the junction of air inlet pipe (14) and air outlet pipe (15).
7. a kind of engine Pcv valve according to claim 6, it is characterised in that on the lateral wall of the air inlet pipe (14)
Equipped with the first sealing ring (9), the lateral wall of the air outlet pipe (15) is equipped with the second sealing ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370456.2U CN207316080U (en) | 2017-10-23 | 2017-10-23 | A kind of engine Pcv valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370456.2U CN207316080U (en) | 2017-10-23 | 2017-10-23 | A kind of engine Pcv valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316080U true CN207316080U (en) | 2018-05-04 |
Family
ID=62382261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721370456.2U Active CN207316080U (en) | 2017-10-23 | 2017-10-23 | A kind of engine Pcv valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316080U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591495A (en) * | 2018-05-11 | 2018-09-28 | 浙江吉利控股集团有限公司 | A kind of automobile engine Pcv valve and combinations thereof spool |
| CN112648395A (en) * | 2020-12-21 | 2021-04-13 | 曲阜天博汽车零部件制造有限公司 | PCV valve and lower valve body assembly thereof |
-
2017
- 2017-10-23 CN CN201721370456.2U patent/CN207316080U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591495A (en) * | 2018-05-11 | 2018-09-28 | 浙江吉利控股集团有限公司 | A kind of automobile engine Pcv valve and combinations thereof spool |
| CN108591495B (en) * | 2018-05-11 | 2020-06-23 | 浙江吉利控股集团有限公司 | Automobile engine PCV valve and combined valve core thereof |
| CN112648395A (en) * | 2020-12-21 | 2021-04-13 | 曲阜天博汽车零部件制造有限公司 | PCV valve and lower valve body assembly thereof |
| CN112648395B (en) * | 2020-12-21 | 2022-11-25 | 曲阜天博汽车零部件制造有限公司 | PCV valve |
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