CN200985843Y - One-way valve - Google Patents
One-way valve Download PDFInfo
- Publication number
- CN200985843Y CN200985843Y CNU2006201621310U CN200620162131U CN200985843Y CN 200985843 Y CN200985843 Y CN 200985843Y CN U2006201621310 U CNU2006201621310 U CN U2006201621310U CN 200620162131 U CN200620162131 U CN 200620162131U CN 200985843 Y CN200985843 Y CN 200985843Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- way valve
- valve block
- valve
- 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 - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to an exhaust gas recycle system for the engine, in particular to a single direction valve, which is characterized in that the utility model is composed of a valve core of a cone form, the small end is sealed and the big end is an inlet, some outlets arranged at the sides of the valve core, a freely movable valve plate is fixed at the outlet. The beneficial effect of the utility model is that the pressure pulse fluctuation in the exhaust pipe is utilized, and through intercepting the waste over the air inlet pressure part to realized the recycle of the exhaust gas, and the generation of NOx is validly inhibited, and the EGR single direction valve designed according to the different flow area can realized the control to the EGR.
Description
(1) technical field
The utility model relates to engine exhaust recirculation (exhaust gas recycle, EGR) system, particularly a kind of one-way valve.
(2) background technique
For air conservation, in Abgasgesetz, stipulated the discharge amount of oxynitrides (NOx) in the automobile discharge gas.(exhaust gas recycle, EGR) system introduces a part of waste gas in the gas handling system and mixed gas enters in the cylinder more together and burns, and to suppress the generation of nitrogen oxide (NOx), reduces the discharging of motor nitrogen oxide (NOx) in exhaust gas recirculation.NOx be mixed gas when high-temp combustion, be contained in the N in the mixed gas
2And O
2Chemical reaction produced in generation.Combustion temperature is high more, and the high concentrate NOx of discharge is many more.If waste gas is introduced gas handling system, because the increase of inertia waste gas impels the time delay that catches fire elongated, velocity of combustion descends, and combustion temperature also descends thereupon, so just can suppress the generation of NOx effectively.For turbocharged diesel engine, the pressure in most of operating mode lower inlet ducts (behind the gas compressor, down with) is greater than the pressure in the outlet pipe (before the turbine, down with), and the waste gas in the outlet pipe will be introduced suction tude just must overcome suction pressure in the suction tude.When diesel engine during in the work of a certain operating mode, the pressure in the suction tude is relatively stable, and it is very little pulse, and the interior pressure of outlet pipe has the fluctuation of pulsed, so exhaust pressure is sometimes less than suction pressure, sometimes greater than suction pressure.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, provides a kind of waste gas that can intercept above the intake pressure wave part to be transported to gas handling system and rekindled, thereby suppressed the one-way valve of the generation of NOx.
The utility model is achieved by the following technical solution:
One-way valve of the present utility model, its special way is: comprise spool, its profile is taper, small end sealing, big end is inlet, the side of spool is provided with several outlets, the outlet port be fixed with can free folding valve block.
One-way valve of the present utility model, too big in order to prevent valve block 3 distortion, the baffle plate of the restricted valve block distortion of valve block outside retaining.
One-way valve of the present utility model in order to guarantee the sealing when valve block 3 is closed, is fixed with caulking gum with the valve block contacting point on the spool.
The beneficial effects of the utility model are, utilized the pressure pulse fluctuation in the outlet pipe, the waste gas that surpasses the intake pressure wave part by intercepting is realized exhaust gas recirculation, can suppress the generation of NOx effectively, design the EGR one-way valve of different circulation areas according to the diesel engine of different displacements and can realize the control that EGR leads.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is the structural representation in the utility model longitudinal section.
Among the figure, 1 spool, 2 baffle plates, 3 valve blocks, 4 fluorine rubber.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
One-way valve of the present utility model comprises spool 1, and its profile is taper, small end sealing, big end is inlet, the side of spool is provided with several outlets, the outlet port be fixed with can free folding valve block 3.The baffle plate 2 of the restricted valve block distortion of valve block outside retaining.Be fixed with caulking gum with the valve block contacting point on the spool, caulking gum is a fluorine rubber 4.
One-way valve of the present utility model is valve block formula one-way valve, and spool is made by cast aluminium, is rectangular pyramid shape, and baffle plate is made by steel plate, plate washer 2 and valve block 3 by screw on spool 1.This one-way valve is connected in by pipeline between the air inlet-outlet pipe of egr system, and valve block 3 is opened when exhaust lateral pressure is higher than the air inlet side pressure, and waste gas can enter gas handling system; When exhaust pressure was lower than suction pressure, valve block 3 was closed, and waste gas can't enter gas handling system, and simultaneously the air of gas handling system is because the closing also can not leak in the vent systems and go of valve block 3.Design the one-way valve of different circulation areas according to the diesel engine of different displacements and can realize the control that EGR leads.
Claims (3)
1. one-way valve, it is characterized in that: comprise spool (1), its profile is the big taper of the little end of an end, the small end sealing, big end is inlet, the side is provided with several outlets, the outlet port be fixed with can free folding valve block (3).
2. one-way valve according to claim 1 is characterized in that: the baffle plate (2) of the restricted valve block distortion of valve block (3) outside retaining.
3. one-way valve according to claim 1 and 2 is characterized in that: spool (1) is gone up and the valve block contacting point is fixed with caulking gum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201621310U CN200985843Y (en) | 2006-12-14 | 2006-12-14 | One-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201621310U CN200985843Y (en) | 2006-12-14 | 2006-12-14 | One-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200985843Y true CN200985843Y (en) | 2007-12-05 |
Family
ID=38915301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201621310U Expired - Lifetime CN200985843Y (en) | 2006-12-14 | 2006-12-14 | One-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200985843Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152371A (en) * | 2015-09-26 | 2015-12-16 | 胡海平 | Saddle with non-return device and non-return valve |
| CN108150316A (en) * | 2017-12-25 | 2018-06-12 | 潍柴动力股份有限公司 | EGR mixing arrangements and internal combustion engine |
| US10253732B2 (en) * | 2014-05-30 | 2019-04-09 | Toyota Jidosha Kabushiki Kaisha | Supercharged internal combustion engine |
| CN112392631A (en) * | 2020-11-18 | 2021-02-23 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) one-way valve and EGR system |
-
2006
- 2006-12-14 CN CNU2006201621310U patent/CN200985843Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10253732B2 (en) * | 2014-05-30 | 2019-04-09 | Toyota Jidosha Kabushiki Kaisha | Supercharged internal combustion engine |
| CN105152371A (en) * | 2015-09-26 | 2015-12-16 | 胡海平 | Saddle with non-return device and non-return valve |
| CN108150316A (en) * | 2017-12-25 | 2018-06-12 | 潍柴动力股份有限公司 | EGR mixing arrangements and internal combustion engine |
| CN112392631A (en) * | 2020-11-18 | 2021-02-23 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) one-way valve and EGR system |
| CN112392631B (en) * | 2020-11-18 | 2022-04-26 | 潍柴动力股份有限公司 | EGR (exhaust gas recirculation) one-way valve and EGR system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071205 |
|
| EXPY | Termination of patent right or utility model |