CN201747430U - Needle type positive crankcase ventilation valve suitable for supercharged engine - Google Patents
Needle type positive crankcase ventilation valve suitable for supercharged engine Download PDFInfo
- Publication number
- CN201747430U CN201747430U CN2010202182694U CN201020218269U CN201747430U CN 201747430 U CN201747430 U CN 201747430U CN 2010202182694 U CN2010202182694 U CN 2010202182694U CN 201020218269 U CN201020218269 U CN 201020218269U CN 201747430 U CN201747430 U CN 201747430U
- Authority
- CN
- China
- Prior art keywords
- supercharged engine
- crankcase ventilation
- ventilation valve
- spool
- pin type
- 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
- 238000009423 ventilation Methods 0.000 title claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 4
- 208000001953 Hypotension Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000021822 hypotensive Diseases 0.000 description 2
- 230000001077 hypotensive effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Abstract
The utility model provides a needle type positive crankcase ventilation valve suitable for a supercharged engine, which includes a casing and a valve core arranged in the casing, wherein a hole penetrating the valve core is formed on the valve core. The needle type positive crankcase ventilation valve suitable for the supercharged engine can improve the precision of control to the crankcase pressure.
Description
Technical field
The utility model relates to a kind of motor, especially relates to a kind of pin type crankcase ventilation valve that is applicable to supercharged engine.
Background technique
Engine PCV (Positive Crankcase Ventilation, PCV) valve mainly is made up of valve body, spool, spring, and outlet connects intake manifold, import connects the crank case gases outlet.Gas in the crankcase imports intake manifold by the PCV valve, and has a spot of air to enter intake manifold by air-strainer through the PCV valve.
Existing PCV valve has two kinds of pin type (joint type) and diaphragm types, pin type PCV is accurate inadequately for the control of crankcase pressure, especially when the motor large load operation, it is very low that crankcase pressure can become under the effect of air induction hose degree of vacuum, and this all has to a certain degree influence for working life of each oil sealing on the motor and oil consumption.
The model utility content
The purpose of this utility model provides a kind of pin type crankcase ventilation valve that is applicable to supercharged engine, and this is applicable to that the pin type crankcase ventilation valve of supercharged engine can improve the control accuracy to crankcase pressure.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of pin type crankcase ventilation valve that is applicable to supercharged engine, and comprise housing, be arranged on the spool in the housing, wherein, offer the hole that connects spool on the described spool.
Described hole is along the axial setting of described spool.
For the ease of processing, described hole is positioned at the center of described spool.
In order to obtain best aperture, provide the parameter that influences the aperture, the pressure of described aperture and the intake manifold relation of being inversely proportional to
The scope in described aperture is that 0.5mm is to 3mm.
Described aperture is 1mm.
The beneficial effects of the utility model: offer the hole that connects spool owing to adopt on spool, this hole has changed the pressure-flow characteristic of pin type PCV valve, has improved crankcase pressure; Especially when the motor large load operation, pressure in the supercharged engine intake manifold be on the occasion of, the degree of vacuum of air induction hose is often bigger, the interior air of intake manifold this moment enters crankcase by the hole on the needle-valve, can solve the hypotensive problem of this operating mode lower crankcase like this, thereby improve control accuracy crankcase pressure.
Below with reference to drawings and Examples, the utility model is carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is the organigram of pin type PCV valve.
Among the figure: 11. upper shells, 12. lower shell bodys, 20. pads, 30. spools, 31. holes, 41. big springs, 42. little springs.
Embodiment
As shown in Figure 1, the pin type PCV valve in the present embodiment comprises the housing of being made up of upper and lower casing (11,12), and the end of upper shell 11 is provided with the inlet that is communicated with crankcase, and the end of lower shell body 12 is provided with the outlet that is connected with intake manifold; Upper and lower casing is provided with pad 20 between (11,12), and spool 30 is arranged in the lower shell body 12, and the big spring 41 in the lower shell body 12 is arranged between spool 30 and the pad 20, and little spring 42 is arranged on the inwall of upper shell 12; Offer the hole 31 that connects spool 30 on the spool 30.This hole 31 can change the pressure-flow characteristic of PCV valve, thereby makes crankcase pressure satisfy corresponding requirement.Specifically when different operating modes:
When the little load operation of motor, pressure in the engine intake manifold is lower than barometric pressure, degree of vacuum is bigger, the gas that produces in the crankcase enters intake manifold through the gap between PCV valve core 30 and the pad 20, because the hole 31 on the spool 30 has increased flow, pass through the piston air leakage of the flow of PCV valve this moment greater than motor, portion of air enters in the crankcase from air induction hose, play certain compensating action, make crankcase pressure remain on certain limit;
In the motor during load operation, pressure in intake manifold and the air induction hose is all near atmospheric pressure, part crank case gases enters air induction hose by the connecting tube of air induction hose and crankcase, a part enters intake manifold by the PCV valve, hole 31 on the spool 30 has increased flow at this moment, and crankcase pressure is had some improvement;
Especially when the motor large load operation, pressure in the intake manifold be on the occasion of, pressure in the air induction hose is lower, the degree of vacuum that is air induction hose is bigger, the interior air of intake manifold this moment enters crankcase by the hole on the spool 30 31, then the connecting tube by air induction hose and crankcase enters air induction hose, thereby with the pressure control in the crankcase within the specific limits, has solved the hypotensive problem of this operating mode lower crankcase.In addition,, can take away the water vapour that produces in the crankcase owing to have air to pass through in the engine crankcase, for freezed in winter, the rotten problem of the machine oil effect that improves significantly.
As preferably, described hole 31 is along the axial setting of described spool 30.This structure is the shortest air-flow path, and short air-flow path is convenient to passing through of air-flow.
Described hole 31 is positioned at the center of described spool 30.The benefit of this structure is to be convenient to processing, simplified processing process.
Below provide the aperture parameters in described hole 31, the pressure of aperture and the intake manifold relation of being inversely proportional to; Also be subjected to the influence of air induction hose force value.The pairing aperture of different engine displacement is different, in this scope of 3mm, is optimum value with 1mm at 0.5mm.
Claims (6)
1. a pin type crankcase ventilation valve that is applicable to supercharged engine comprises housing, is arranged on the spool in the housing, it is characterized in that, offers the hole that connects spool on the described spool.
2. the pin type crankcase ventilation valve that is applicable to supercharged engine as claimed in claim 1 is characterized in that, described hole is along the axial setting of described spool.
3. the pin type crankcase ventilation valve that is applicable to supercharged engine as claimed in claim 1 is characterized in that described hole is positioned at the center of described spool.
4. as the arbitrary described pin type crankcase ventilation valve that is applicable to supercharged engine of claim 1 to 3, it is characterized in that the pressure of described aperture and the intake manifold relation of being inversely proportional to.
5. the pin type crankcase ventilation valve that is applicable to supercharged engine as claimed in claim 4 is characterized in that the scope in described aperture is that 0.5mm is to 3mm.
6. the pin type crankcase ventilation valve that is applicable to supercharged engine as claimed in claim 5 is characterized in that described aperture is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202182694U CN201747430U (en) | 2010-06-03 | 2010-06-03 | Needle type positive crankcase ventilation valve suitable for supercharged engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202182694U CN201747430U (en) | 2010-06-03 | 2010-06-03 | Needle type positive crankcase ventilation valve suitable for supercharged engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747430U true CN201747430U (en) | 2011-02-16 |
Family
ID=43582113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202182694U Expired - Fee Related CN201747430U (en) | 2010-06-03 | 2010-06-03 | Needle type positive crankcase ventilation valve suitable for supercharged engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747430U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545411A (en) * | 2014-10-28 | 2016-05-04 | 福特环球技术公司 | Crankcase ventilation for turbocharged engine |
| CN106285831A (en) * | 2015-06-02 | 2017-01-04 | 内蒙古欧意德发动机有限公司 | Ventilation valve and positive crankcase ventilation(PCV) |
| CN113202594A (en) * | 2021-04-26 | 2021-08-03 | 联合汽车电子有限公司 | Crankcase ventilation system, diagnostic method and storage medium |
-
2010
- 2010-06-03 CN CN2010202182694U patent/CN201747430U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545411A (en) * | 2014-10-28 | 2016-05-04 | 福特环球技术公司 | Crankcase ventilation for turbocharged engine |
| CN106285831A (en) * | 2015-06-02 | 2017-01-04 | 内蒙古欧意德发动机有限公司 | Ventilation valve and positive crankcase ventilation(PCV) |
| CN113202594A (en) * | 2021-04-26 | 2021-08-03 | 联合汽车电子有限公司 | Crankcase ventilation system, diagnostic method and storage medium |
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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: 20110216 Termination date: 20150603 |
|
| EXPY | Termination of patent right or utility model |