CN201148890Y - Novel diaphragm type PCV valve - Google Patents
Novel diaphragm type PCV valve Download PDFInfo
- Publication number
- CN201148890Y CN201148890Y CNU2007201297699U CN200720129769U CN201148890Y CN 201148890 Y CN201148890 Y CN 201148890Y CN U2007201297699 U CNU2007201297699 U CN U2007201297699U CN 200720129769 U CN200720129769 U CN 200720129769U CN 201148890 Y CN201148890 Y CN 201148890Y
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- CN
- China
- Prior art keywords
- diaphragm
- pcv valve
- spring support
- small spring
- novel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 11
- 238000009423 ventilation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010587 phase diagram Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
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Abstract
The utility model relates to a novel PCV valve, in particular to a novel diaphragm type PVC valve. The PVC valve comprises a diaphragm (1), a supporting frame (4) and a casing body (6), a small spring support (5) is arranged under the diaphragm (1) and in the position where the supporting frame (4) is connected, a small spring (3) is positioned in the small spring support (5) and is in contact with the diaphragm (1), the cross section of the small spring support (5) in the radial direction is W-shaped, and a groove (7) is arranged in the position where the casing body (6) is in contact with the small spring support (5). The novel diaphragm type PVC valve with the special structure has the advantages that through a small spring added under the diaphragm of the PCV valve, the pressure in the crankcase can be adjusted according to different piston air leakage quantities, and the phenomenon that the diaphragm and the small spring are started interruptedly cannot occur. Therefore, the possibility of abnormal noise can be avoided, and simultaneously, the pressure in the crankcase can be maintained within the micro negative pressure range.
Description
Technical field
The utility model relates to engine crankshaft ventilation system, especially relates to a kind of novel PCV valve.
Background technique
The PCV valve of available engine crankcase ventilation system mainly contains two kinds of forms: a kind of is needle-valve (joint) formula, the major defect of this PCV valve is: flow is less, mainly show when motor moves under big load, the piston air leakage that produces is bigger, at this moment needle valve PCV valve just can not satisfy the requirement of crankcase ventilation system, also needs to increase in addition the pipeline that can in time the gas in the crankcase be incorporated into gas handling system; Another kind is a diaphragm type PCV valve, because the diaphragm type PCV valve circulation area is big, only need a ventilation duct just the piston air leakage in the crankcase in time can be imported gas handling system, therefore diaphragm type PCV valve has obtained application more and more widely, but because diaphragm type PCV valve is when engine idle moves, the PCV valve is in closed condition, but this moment, motor still had certain piston air leakage, when the piston air leakage in the crankcase reaches certain pressure, the PCV valve will instantaneously be opened, this moment, air communication was crossed the very little passage in cross section, was easy to generate abnormal sound.
The model utility content
Technical problem to be solved in the utility model is that diaphragm type PCV valve is easy to generate the problem of abnormal sound and a kind of novel diaphragm type PCV valve is provided under specific operation, its objective is to make air-flow no longer produce abnormal sound by diaphragm type PCV valve the time.
For solving the problems of the technologies described above, the technical solution of the utility model is that this a kind of novel diaphragm type PCV valve comprises diaphragm, support and housing, it is characterized in that being positioned at the following of diaphragm and support connection and be provided with the little spring support, little spring is positioned at the little spring support and contacts with diaphragm.
Described little spring support cross section radially is " W " shape.
Housing and the contacted place of little spring support are provided with groove.
A kind of novel diaphragm type PCV valve with above-mentioned special construction has the following advantages:
1, by below the diaphragm of PCV valve, increasing a little spring, can regulate pressure in the crankcase according to the difference of piston air leakage, can not produce diaphragm and little spring support and be interrupted the situation of opening, thereby avoided producing the possibility of abnormal sound, can guarantee that the interior pressure of crankcase is in little range of negative pressure simultaneously.
2, reliable operation and enforcement easily.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model PCV valve phase diagram when the little load operation of motor.
Shown in Fig. 1, Fig. 2: 1, diaphragm; 2, big spring; 3, little spring; 4, support; 5, little spring support; 6, housing; 7, groove.
Embodiment
Shown in Figure 1 is a kind of novel diaphragm type PCV valve, comprise diaphragm, support and housing, following and support 4 connections that are positioned at diaphragm 1 are provided with little spring support 5, little spring 3 is positioned at little spring support 5 and contacts with diaphragm 1, little spring support 5 cross section radially is " W " shape, little spring 3 is positioned at two Baltimore grooves of little spring support 5 " W ", and housing 6 is provided with groove 7 with little spring support 5 contacted places.
When on motor, assembling this PCV valve, should guarantee PCV valve horizontal positioned as shown in Figure 1 as far as possible, the right side joint is the crank case gases inlet, this joint is connected by rubber hose with the oil gas vent that cyclinder head cover covers usually, if the oil outer gas separating device is arranged, then the oil outer gas separating device is connected between valve chamber cover and the PCV valve, following edge connector is the crank case gases outlet, this joint is connected by rubber hose with engine intake manifold usually, when the motor large load operation, the PCV valve as shown in Figure 1, this moment, the engine piston air leakage was big, the degree of vacuum of intake manifold is very little, and the PCV valve film makes the PCV valve open fully under the effect of big spring 2, and crank case gases can enter intake manifold simultaneously by the major path of little spring support 5 bottoms and the hole on the little spring support 5.
Fig. 2 is the PCV valve phase diagram when the little load operation of motor of a kind of novel diaphragm type PCV valve.When the little load operation of motor, this moment, the engine piston air leakage was very little, the degree of vacuum of intake manifold is bigger, the PCV valve film is under the effect of intake manifold vacuum, the lower end surface of little spring support 5 and the annular projection on the housing 6 are fitted tightly, this moment, crank case gases can only enter intake manifold by the perforate on the little spring support 5, along with further reducing of engine load, diaphragm 1 also constantly reduces under the effect of intake manifold vacuum and little spring 3 with the distance of little spring support 5, thereby crankcase pressure inside when accurately controlling little load, when engine idle moves, diaphragm 1 is also fitted with little spring support 5 upper-end surfaces, and the interior gas of crankcase this moment can only enter intake manifold by the groove 7 of annular projection on the housing 6.
For different motors,, suitably adjust the pressure in stool and urine can regulate engine idle when operation crankcase of housing 6 upper grooves 6 according to the difference of piston air leakage.The PCV valve can not produce diaphragm 1 and produce the situation of opening of being interrupted with little spring support 5 when the structure of this groove 7 made the engine idle operation, therefore can not produce abnormal sound.
Claims (3)
1. a novel diaphragm type PCV valve comprises diaphragm, support and housing, it is characterized in that following and support (4) connection that is positioned at diaphragm (1) is provided with little spring support (5), and little spring (3) is positioned at little spring support (5) and contacts with diaphragm (1).
2. a kind of novel diaphragm type PCV valve according to claim 1 is characterized in that described little spring support (5) cross section radially is " W " shape.
3. a kind of novel diaphragm type PCV valve according to claim 1 is characterized in that housing (6) and the contacted place of little spring support (5) are provided with groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201297699U CN201148890Y (en) | 2007-12-28 | 2007-12-28 | Novel diaphragm type PCV valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201297699U CN201148890Y (en) | 2007-12-28 | 2007-12-28 | Novel diaphragm type PCV valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201148890Y true CN201148890Y (en) | 2008-11-12 |
Family
ID=40116657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201297699U Expired - Fee Related CN201148890Y (en) | 2007-12-28 | 2007-12-28 | Novel diaphragm type PCV valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201148890Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575997B (en) * | 2009-06-05 | 2010-11-17 | 上海万捷汽车控制***有限公司 | Diaphragm type PCV valve of crankcase ventilation system |
| CN101672381B (en) * | 2009-10-14 | 2011-01-05 | 奇瑞汽车股份有限公司 | Diaphragm type PCV valve |
| CN105705739A (en) * | 2013-10-30 | 2016-06-22 | 蒂森克虏伯普利斯坦技术中心股份公司 | Controllable oil separation device |
| CN107532731A (en) * | 2015-05-06 | 2018-01-02 | 曼·胡默尔有限公司 | For adjusting or controlling the unit of Fluid pressure |
-
2007
- 2007-12-28 CN CNU2007201297699U patent/CN201148890Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575997B (en) * | 2009-06-05 | 2010-11-17 | 上海万捷汽车控制***有限公司 | Diaphragm type PCV valve of crankcase ventilation system |
| CN101672381B (en) * | 2009-10-14 | 2011-01-05 | 奇瑞汽车股份有限公司 | Diaphragm type PCV valve |
| CN105705739A (en) * | 2013-10-30 | 2016-06-22 | 蒂森克虏伯普利斯坦技术中心股份公司 | Controllable oil separation device |
| CN105705739B (en) * | 2013-10-30 | 2018-11-16 | 蒂森克虏伯普利斯坦技术中心股份公司 | Controllable oil separation equipment |
| US10174651B2 (en) | 2013-10-30 | 2019-01-08 | Thyssenkrupp Presta Teccenter Ag | Controllable oil separation device |
| CN107532731A (en) * | 2015-05-06 | 2018-01-02 | 曼·胡默尔有限公司 | For adjusting or controlling the unit of Fluid pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |