CN101575997B - Diaphragm type PCV valve of crankcase ventilation system - Google Patents
Diaphragm type PCV valve of crankcase ventilation system Download PDFInfo
- Publication number
- CN101575997B CN101575997B CN2009100993973A CN200910099397A CN101575997B CN 101575997 B CN101575997 B CN 101575997B CN 2009100993973 A CN2009100993973 A CN 2009100993973A CN 200910099397 A CN200910099397 A CN 200910099397A CN 101575997 B CN101575997 B CN 101575997B
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- pcv valve
- lower shell
- ventilation system
- upper shell
- 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
Images
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a diaphragm type PCV valve of a crankcase ventilation system, which comprises an upper shell and a lower shell that are fixedly connected; a pressure ring is arranged on the bottom of the upper shell; a limit post corresponding to the pressure ring is arranged on top of the lower shell; the limit post is sequentially sheathed with a diaphragm plug mesh bracket and a diaphragm from bottom to top; the pressure ring is sheathed on the limit post and props against the diaphragm, and is vertically fixed on the bottom of the upper shell through reinforcing ribs I which are distributed on the inner wall of the upper shell evenly and slantingly downward; the limit post is vertically fixed on the top of the lower shell through reinforcing ribs II which are evenly distributedon the inner wall of the lower shell; the upper shell, the lower shell and the diaphragm plug mesh bracket adopt PA6-GF30 plastic; and the diaphragm adopts soft toughened fluorubber. The diaphragm type PCV valve can improve the vehicle exhaust purifying capacity, stabilize and limit gas flow, guarantee an engine to work safely and steadily, achieve the effect of gas circulation, simultaneously improve air ventilation, reduces weight and mould development cost, and improve the stability of processing technique.
Description
Technical field
The present invention relates to engine crankshaft ventilation system, be specifically related to the PCV valve.
Background technique
The PCV valve is a measuring control valve, is installed between engine crankshaft ventilation system and the gas handling system, and the PCV valve is controlled by degree of vacuum, and the secondary combustible exhaust gas of regulating the crankcase ventilation system generation enters the flow of gas handling system.Every car all has outlet pipe that the waste gas of engine combustion is discharged outside the car, but way does not absolutely discharge waste gas, the secondary combustible exhaust gas that still has few part creeps in the oil sump via the gap of piston and cylinder wall, in case it is many to enter the oil gas accumulation of oil sump, can't get rid of, will form air pressure, not only can dilute machine oil, cause engine parts insufficient lubrication, also can cause the serious consequence of unusual consumption of machine oil or the like.So the oil gas in the oil sump must have the pipeline of releasing, before the automobile gas emission pollution legislative control, all be to connect the bar pipe from oil sump in the past, allow oil gas directly be discharged in the middle of the atmosphere.Car is older, and the combustion oil air-blowing is leaked more serious, and the waste gas of discharging from oil sump just the more forms serious atmospheric pollution.
Present most of petrol engine all is equipped with the PCV valve and impels engine breathing, gas in the crankcase is imported intake manifold by the PCV valve, and having a spot of air directly to enter intake manifold through the PCV valve by air-strainer, this has just been avoided, and the closure place freezes, phenomenons such as burning is insufficient, deterioration of emission.When the normal speed of motor or rotating speed were slow, secondary combustible exhaust gas flow was little, and mixed gas is also few, and the PCV valve opening is less, thereby it is also fewer to be forced to suck the secondary combustible exhaust gas of burning.When motor quickens or rotating ratio when higher, secondary combustible exhaust gas flow is big, and mixed gas is also big, and the PCV valve opening is bigger, thereby it is also more to be forced to suck the secondary combustible exhaust gas of burning.
China national Department of Intellectual Property has announced name on November 12nd, 2008 and has been called a kind of novel diaphragm type PCV valve, and notification number is the patent of invention of CN201148890.Specifically implement part as can be known according to its specification in conjunction with Figure of description, this PCV valve comprises little spring, little spring support and the big spring of diaphragm and contact adjusting diaphragm, when the engine piston air leakage is big, the degree of vacuum of intake manifold is very little, and the PCV valve film is opened under the effect of big spring fully; When engine piston air leakage hour, the degree of vacuum of intake manifold is bigger, the lower end surface of little spring support and the annular projection on the housing are fitted tightly, along with engine load further reduces, the distance of diaphragm and little spring support also constantly reduces, thus crankcase pressure inside when controlling little load.Though can play effect under this PCV valve one stable condition, but have the following disadvantages: degree of vacuum pressure can't make spring open when motor utmost point low-speed running, and the secondary combustible exhaust gas that produces can't enter mixing, below standard phenomenon when being everlasting the automobile low-speed running, can occur discharging, can't satisfy country environmental requirement; The consistency and elasticity power of spring part very difficult control in processing technology can't guarantee the stability and the working life of PCV valve in addition.
Summary of the invention
The object of the present invention is to provide diaphragm type PCV valve of crankcase ventilation system, can effectively solve existing PCV valve poor stability, might can't open spring and make the secondary combustible exhaust gas can't enter mixing, the problem of below standard phenomenon occurs discharging.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme: diaphragm type PCV valve of crankcase ventilation system, comprise fixedly connected upper shell and lower shell body, it is characterized in that: the upper shell bottom is provided with pressure ring, the lower shell body top is provided with the limited post corresponding with pressure ring, limited post is socketed with diaphragm plug net support and diaphragm from bottom to up successively, and pressure ring is socketed in and props up diaphragm on the limited post.
Further, pressure ring vertically is fixed on the upper shell bottom by stiffening rib I, is evenly distributed on the upper enclosure inner wall under stiffening rib I is oblique.
Preferably, stiffening rib I is provided with 3～6, both can guarantee the constant intensity of pressure ring, thereby can guarantee air flow rate to avoid circulating resistance to increase again and reduce product stability.
Further, limited post vertically is fixed on the lower shell body top by stiffening rib II, and stiffening rib II is evenly distributed on the lower shell body inwall.
Preferably, stiffening rib II is provided with 6～10, equally both can guarantee the constant intensity of limited post, thereby can guarantee air flow rate to avoid circulating resistance to increase again and reduce product stability.
Further, diaphragm is provided with central through bore I, and diaphragm plug net support is provided with central through bore II, supports diaphragm plug net support and diaphragm thereby limited post passes central through bore II, central through bore I.
Further, be provided with the gap between the lower shell body opening at diaphragm plug net support and stiffening rib II place, be evenly distributed with vent on the diaphragm plug net support, the corresponding membrane covered that makes with diaphragm of the diameter of diaphragm plug net support is in the vent top.
Further, the lower shell body top is provided with draw-in groove, and the upper shell bottom sides is along being welded in the draw-in groove.
Further, upper shell, lower shell body and diaphragm plug net support adopt the PA6-GF30 plastics, and the Environmental Conditions that has satisfied product requires and the requirement of product welding processing.
Further, diaphragm adopts soft toughness reinforcing fluorine rubber, guarantees the usage requirement under the complex environment, the stability in use of enhancing product performance.
The present invention is owing to adopted technique scheme, can improve the purifying vehicle exhaust ability, at automobile crane Ventilation Control case PCV valve of the present invention being installed can make harmful gas content such as carbon monoxide, hydrocarbon and the nitrogen oxide of discharging in the waste gas, particulate, soot drop to minimum, and can stablize the gas flow that limits under this air pressure, guarantee the engine health smooth working, and make it reach the effect of gas circulation; The present invention has simultaneously improved the air circulation of product, reduced circulating resistance, and product weight and mould development cost have been reduced, improved product processing technique stability, this product can use under-40 ℃～130 ℃ complex environments for a long time, carries out along contrary direction lowpressure air mass flow fixed value restriction, and its volume simple in structure is little, good stability, easy for installation, with low cost.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of diaphragm type PCV valve of crankcase ventilation system of the present invention;
Fig. 2 is the worm's eye view of Fig. 1;
Fig. 3 is the structural representation of upper shell among the present invention;
Fig. 4 be among Fig. 3 M to structural representation;
Fig. 5 is the structural representation of diaphragm among the present invention;
Fig. 6 is the structural representation of diaphragm plug net support among the present invention;
Fig. 7 is the structural representation of lower shell body among the present invention;
Fig. 8 be among Fig. 7 N to structural representation;
Fig. 9 is the structural representation when air-flow is downward among the present invention;
Structural representation when Figure 10 makes progress for air-flow among the present invention.
Embodiment
Extremely shown in Figure 8 as Fig. 1, be diaphragm type PCV valve of crankcase ventilation system of the present invention, comprise fixedly connected upper shell 1 and lower shell body 2, lower shell body 2 tops are provided with draw-in groove 21, upper shell 1 bottom sides is welded in the draw-in groove 21 by ultrasonic welding machine along 11, thus fixedly connected upper shell 1 and lower shell body 2.Upper shell 1 bottom is provided with pressure ring 3, pressure ring 3 vertically is fixed on upper shell 1 bottom by stiffening rib I 4, be evenly distributed on upper shell 1 inwall under stiffening rib I 4 is oblique, stiffening rib I 4 can adopt 3～6, both can guarantee the constant intensity of pressure ring 3, thereby can guarantee air flow rate to avoid circulating resistance to increase again and reduce product stability.Lower shell body 2 tops are provided with the limited post 5 corresponding with pressure ring 3, limited post 5 vertically is fixed on lower shell body 2 tops by stiffening rib II 6, stiffening rib II 6 is evenly distributed on lower shell body 2 inwalls, stiffening rib II 6 can adopt 6～10, equally both can guarantee the constant intensity of limited post 5, thereby can guarantee air flow rate to avoid circulating resistance to increase again and reduce product stability.Limited post 5 is socketed with diaphragm plug net support 8 and diaphragm 7 from bottom to up successively, diaphragm 7 is provided with central through bore I 71, diaphragm plug net support 8 is provided with central through bore II 81 and equally distributed vent 82, limited post 5 passes central through bore II 81, thereby central through bore I 71 supports diaphragm plug net support 8 and diaphragm 7, pressure ring 3 is socketed in and props up diaphragm 7 on the limited post 5, be provided with the gap between lower shell body 2 openings at diaphragm plug net support 8 and stiffening rib II 6 places, the diameter of diaphragm plug net support 8 is corresponding with diaphragm 7, makes diaphragm 7 be covered in vent 82 tops.Upper shell 1, lower shell body 2 and diaphragm plug net support 8 adopt the PA6-GF30 plastics, and the Environmental Conditions that has satisfied product requires and the requirement of product welding processing; Diaphragm 7 adopts soft toughness reinforcing fluorine rubber, guarantees the usage requirement under the complex environment, the stability in use of enhancing product performance.
As shown in Figure 9, air-flow flows to the process of lower shell body 2 from upper shell 1, when air communication is crossed lower shell body 2 because at the vent 82 that has blocked under the straight tackling of diaphragm 7 on the diaphragm plug net support 8, thereby air-flow can only reach the amount of needed partial vacuum degree state by the cylindrical of diaphragm plug net support 8 and the quantitative gap between lower shell body 2 openings.
As shown in figure 10, air-flow flows to the process of upper shell 1 from lower shell body 2, air communication is crossed the vent 82 on the diaphragm plug net support 8, and is soft because diaphragm 7 materials are very light, thereby makes air communication cross that the resistance of valve is very little to have satisfied ventilation flow rate and pressure reduction requirement.
Claims (10)
1. diaphragm type PCV valve of crankcase ventilation system, comprise fixedly connected upper shell (1) and lower shell body (2), it is characterized in that: described upper shell (1) bottom is provided with pressure ring (3), described lower shell body (2) top is provided with the limited post (5) corresponding with pressure ring (3), described limited post (5) is socketed with diaphragm plug net support (8) and diaphragm (7) from bottom to up successively, and described pressure ring (3) is socketed in and props up described diaphragm (7) on the limited post (5).
2. diaphragm type PCV valve of crankcase ventilation system according to claim 1, it is characterized in that: described pressure ring (3) vertically is fixed on upper shell (1) bottom by stiffening rib I (4), is evenly distributed under described stiffening rib I (4) is oblique on upper shell (1) inwall.
3. diaphragm type PCV valve of crankcase ventilation system according to claim 2 is characterized in that: described stiffening rib I (4) is provided with 3～6.
4. diaphragm type PCV valve of crankcase ventilation system according to claim 1 is characterized in that: described limited post (5) vertically is fixed on lower shell body (2) top by stiffening rib II (6), and described stiffening rib II (6) is evenly distributed on lower shell body (2) inwall.
5. diaphragm type PCV valve of crankcase ventilation system according to claim 4 is characterized in that: described stiffening rib II (6) is provided with 6～10.
6. diaphragm type PCV valve of crankcase ventilation system according to claim 1, it is characterized in that: described diaphragm (7) is provided with central through bore I (71), described diaphragm plug net support (8) is provided with central through bore II (81), and described limited post (5) passes central through bore II (81), central through bore I (71) thereby supports diaphragm plug net support (8) and diaphragm (7).
7. diaphragm type PCV valve of crankcase ventilation system according to claim 6, it is characterized in that: be provided with the gap between lower shell body (2) opening at described diaphragm plug net support (82) and stiffening rib II (6) place, be evenly distributed with vent (82) on the described diaphragm plug net support (82), the corresponding described diaphragm (7) that makes with diaphragm (7) of the diameter of described diaphragm plug net support (8) is covered in vent (82) top.
8. diaphragm type PCV valve of crankcase ventilation system according to claim 1 is characterized in that: described lower shell body (2) top is provided with draw-in groove (21), and described upper shell (1) bottom sides is welded in the draw-in groove (21) along (11).
9. according to any described diaphragm type PCV valve of crankcase ventilation system of claim 1 to 8, it is characterized in that: described upper shell (1), lower shell body (2) and diaphragm plug net support (8) adopt the PA6-GF30 plastics.
10. according to any described diaphragm type PCV valve of crankcase ventilation system of claim 1 to 8, it is characterized in that: described diaphragm (7) adopts soft toughness reinforcing fluorine rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100993973A CN101575997B (en) | 2009-06-05 | 2009-06-05 | Diaphragm type PCV valve of crankcase ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100993973A CN101575997B (en) | 2009-06-05 | 2009-06-05 | Diaphragm type PCV valve of crankcase ventilation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101575997A CN101575997A (en) | 2009-11-11 |
| CN101575997B true CN101575997B (en) | 2010-11-17 |
Family
ID=41271046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100993973A Expired - Fee Related CN101575997B (en) | 2009-06-05 | 2009-06-05 | Diaphragm type PCV valve of crankcase ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101575997B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787914A (en) * | 2010-03-15 | 2010-07-28 | 徐连奎 | Forced ventilation one-way valve for automotive engine |
| CN108999674B (en) * | 2018-10-08 | 2023-09-15 | 河北亚大汽车塑料制品有限公司 | Integrated one-way PCV valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201148890Y (en) * | 2007-12-28 | 2008-11-12 | 奇瑞汽车股份有限公司 | Novel diaphragm type PCV valve |
| CN201461030U (en) * | 2009-06-05 | 2010-05-12 | 上海万捷汽车控制系统有限公司 | Diaphragm PCV valve of crankcase ventilation system |
-
2009
- 2009-06-05 CN CN2009100993973A patent/CN101575997B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201148890Y (en) * | 2007-12-28 | 2008-11-12 | 奇瑞汽车股份有限公司 | Novel diaphragm type PCV valve |
| CN201461030U (en) * | 2009-06-05 | 2010-05-12 | 上海万捷汽车控制系统有限公司 | Diaphragm PCV valve of crankcase ventilation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101575997A (en) | 2009-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101575997B (en) | Diaphragm type PCV valve of crankcase ventilation system | |
| CN201461030U (en) | Diaphragm PCV valve of crankcase ventilation system | |
| CN201614997U (en) | Fuel atomization expander for internal combustion engine | |
| CN213807792U (en) | Non-road diesel engine crankcase ventilation system | |
| CN208870660U (en) | Internal combustion engine bilateral air valve door | |
| CN202300634U (en) | Fuel-saving device of automobile | |
| CN102425508A (en) | Exhaust gas circulation (EGR) based hybrid charge system and method of gasoline engine | |
| CN202132089U (en) | Secondary air compensating valve for motorcycle | |
| CN202483679U (en) | Oil return pipe assembly of diesel engine supercharger | |
| CN201884150U (en) | Floating collection device for fuel vapor in fuel tank | |
| CN201273236Y (en) | Vehicle air-intake installation | |
| CN201187335Y (en) | Breather of engine | |
| CN201650496U (en) | Internal combustion engine fuel automatic control feeding device | |
| CN201041059Y (en) | Oil-saving device of engine | |
| CN202883160U (en) | Exhaust gas recirculation pipe-connecting structure and automobile engine with the same | |
| CN101798971A (en) | Automatic-control fuel feeding device of internal combustion engine and installation method thereof | |
| CN201599114U (en) | General engine | |
| CN211623547U (en) | Diesel generator | |
| CN218378979U (en) | A buffer gear for waste gas is collected | |
| CN211397689U (en) | Exhaust structure of engine of engineering machinery | |
| CN221074545U (en) | Integrated blowdown processing system of compressor and compressor | |
| CN102032078B (en) | Internal fuel steam collector with floating fuel tank | |
| CN201386604Y (en) | General carb engine | |
| CN201753622U (en) | Air valve guide rod oil seal | |
| CN201065801Y (en) | Fuel saver for motorcycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20180605 |