CN202431374U - Exhaust back pressure valve - Google Patents
Exhaust back pressure valve Download PDFInfo
- Publication number
- CN202431374U CN202431374U CN2011204844646U CN201120484464U CN202431374U CN 202431374 U CN202431374 U CN 202431374U CN 2011204844646 U CN2011204844646 U CN 2011204844646U CN 201120484464 U CN201120484464 U CN 201120484464U CN 202431374 U CN202431374 U CN 202431374U
- Authority
- CN
- China
- Prior art keywords
- return spring
- back pressure
- valve
- exhaust back
- limited post
- 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
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Abstract
The utility model discloses an exhaust back pressure valve, which is arranged inside a silencer and includes a valve body, a valve core and a return spring, wherein the valve body is fixed on a partition board of the silencer; a return spring positioning column and a return spring spacing column are fixedly connected onto the outer wall of the valve body and protrude outwards in the radial direction; the return spring positioning column is sleeved with the ring part of the return spring, and the two are in close fit; the two straight line ends of the return spring are clamped on the two sides of the return spring spacing column, and extend in the direction of the valve core; the end of a knob of the valve core is provided with a positioning end; and the positioning end is clamped between the two straight line ends of the return spring. According to the utility model, the high and low speed variation of an engine can be automatically adapted under the action of the return spring, so that the operations of back pressure reduction and noise reduction can be balanced, as a result, the exhaust back pressure valve has the characteristics of low oil consumption and low noise, and is applicable to exhaust systems of automobile engines, and can be arranged inside silencers.
Description
Technical field
The utility model belongs to automotive field, especially relates to the vent systems of vehicle, specifically a kind of exhaust back pressure valve.
Background technique
The vent systems of domestic car does not generally have the exhaust back pressure valve, generally is employed in the mode of holing on the silencing apparatus dividing plate, and aperture and quantity all are certain, can not adapt to the requirement of motor high and low speed.
The model utility content
The technical problem that the utility model will solve provides a kind of exhaust back pressure valve, is used for vent systems; Effect through return spring comes to adapt to automatically the motor high and low speedization, reduces back pressure and the balance that reduces noise thereby reach, thereby it is little to have an exhaust back pressure; Oil consumption is low, the characteristics that noise is little.
For solving the problems of the technologies described above, the technological scheme that the utility model is taked is:
A kind of exhaust back pressure valve is positioned at silencing apparatus inside, comprises valve body, spool and return spring;
Said valve body is fixed on the silencing apparatus dividing plate; Be fixedly connected with radially return spring locating column, the return spring limited post of evagination on the valve outer wall; Said return spring locating column, return spring limited post are provided with along the direction that is parallel to central shaft at interval; The nearly dividing plate of return spring locating column, the nearly spool of return spring limited post; The two ends of said return spring are opened for parallel straight line shape, and the circle portion of return spring is placed in outside the return spring locating column, and the two closely cooperates; Two rectilinear ends of return spring are stuck in return spring limited post both sides, and extend to the direction of spool;
It is the knob of axis of rotation that the outer end of said spool has with the central shaft, and an end of knob has positioning end, and said positioning end is stuck between two rectilinear ends of return spring.
As a kind of qualification of the utility model, said return spring locating column, return spring limited post are cylindrical, and be suitable with the spacing of the circle portion internal diameter of return spring, return spring two rectilinear ends respectively.
Another kind as the utility model limits, and said return spring is a cylindrically coiled spring.
The working principle of the utility model is following: the exhaust back pressure valve is installed on silencing apparatus inside, is welded on the dividing plate.Adjust exhaust back pressure and noise through the unlatching of valve, the size of valve opening is adjusted through the rigidity of return spring, and the little noise of valve opening is little during low engine speed, and the big back pressure of valve opening is little during high engine speeds, and power loss is little.
During engine idle, valve closing, air-flow can only pass through through valve and valve body gap, and at this moment noise is little, and exhaust back pressure is high;
During high engine speeds, it is big that valve opening becomes, and through valve, exhaust back pressure is little rapidly for air-flow, exhaust back pressure size and spring force balance, and power loss is little.
Owing to adopted above-mentioned technological scheme, the utility model compared with prior art, institute's acquisition of technology progress is:
The effect of the utility model through return spring comes to adapt to automatically the motor high and low speedization, reduces back pressure and the balance that reduces noise thereby reach, thereby it is little to have an exhaust back pressure, and back pressure is little, oil consumption is low, the characteristics that noise is little.
The utility model is applicable to automobile engine exhaust system, is located at silencing apparatus inside.
The utility model below will combine Figure of description and specific embodiment to do further explain.
Description of drawings
Fig. 1 and Fig. 2 are respectively the utility model embodiment's overall structure stereogram and sectional view;
Fig. 3-Fig. 5 is respectively stereogram, plan view, the plan view of middle valve body 1 embodiment illustrated in fig. 1;
Fig. 6-Fig. 8 is respectively stereogram, right elevation, the plan view of middle spool 3 embodiment illustrated in fig. 1;
Fig. 9-Figure 11 is respectively stereogram, plan view and the plan view of middle return spring 2 embodiment illustrated in fig. 1;
Gas flow path schematic representation when Figure 12 and Figure 13 are respectively valve closing and unlatching.
Among the figure: 1-valve body, 2-return spring, 3-spool, 4-dividing plate, 5-return spring locating column, 6--return spring limited post, 7-knob, 8-positioning end.
Embodiment
Fig. 1 and shown in Figure 2 be a kind of exhaust back pressure valve, be located at silencing apparatus inside, comprise valve body 1, spool 3 and return spring 2.
Shown in Fig. 3-5, valve body 1 is connected between dividing plate 4 and the spool 3; Be fixedly connected with radially return spring locating column 5, the return spring limited post 6 of (valve body radially) evagination on valve body 1 outer wall.
Return spring locating column 5, return spring limited post 6 are provided with return spring locating column 5 nearly dividing plates 4, return spring limited post 6 nearly spools 3 at interval along the direction that is parallel to central shaft.
Like Fig. 9-shown in Figure 11, the two ends of return spring 2 are opened for parallel straight line shape, and the circle portion of return spring 2 is placed in outside the return spring locating column 5, and the two closely cooperates.Two rectilinear ends of return spring 2 are stuck in return spring limited post 6 both sides, and extend to the direction of spool 3.
Like Fig. 6-shown in Figure 8, it is the knob 7 of axis of rotation that the outer end of spool 3 has with the central shaft, and an end of knob 7 has positioning end 8, and positioning end 8 is stuck between two rectilinear ends of return spring 2.
Return spring locating column 5, return spring limited post 6 are cylindrical, and be suitable with the spacing of the circle portion internal diameter of return spring 2,2 liang of rectilinear ends of return spring respectively.
Return spring is a cylindrically coiled spring.
Shown in figure 12: during engine idle, valve closing, air-flow can only pass through through valve and valve body gap, and at this moment noise is little, and exhaust back pressure is high;
Shown in figure 13: during high engine speeds, it is big that valve opening becomes, and through valve, exhaust back pressure is little rapidly for air-flow, exhaust back pressure size and spring force balance, and power loss is little.
Claims (3)
1. an exhaust back pressure valve is located at silencing apparatus inside,
It is characterized in that:Comprise valve body, spool and return spring; Said valve body is fixed on the silencing apparatus dividing plate; Be fixedly connected with radially return spring locating column, the return spring limited post of evagination on the valve outer wall; Said return spring locating column, return spring limited post are provided with along the direction that is parallel to central shaft at interval; The nearly dividing plate of return spring locating column, the nearly spool of return spring limited post; The two ends of said return spring are opened for parallel straight line shape, and the circle portion of return spring is placed in outside the return spring locating column, and the two closely cooperates; Two rectilinear ends of return spring are stuck in return spring limited post both sides, and extend to the direction of spool; It is the knob of axis of rotation that the outer end of said spool has with the central shaft, and an end of knob has positioning end, and said positioning end is stuck between two rectilinear ends of return spring.
2. exhaust back pressure valve according to claim 1,
It is characterized in that:Said return spring locating column, return spring limited post are cylindrical, and be suitable with the spacing of the circle portion internal diameter of return spring, return spring two rectilinear ends respectively.
3. exhaust back pressure valve according to claim 2,
It is characterized in that:Said return spring is a cylindrically coiled spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204844646U CN202431374U (en) | 2011-11-29 | 2011-11-29 | Exhaust back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204844646U CN202431374U (en) | 2011-11-29 | 2011-11-29 | Exhaust back pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202431374U true CN202431374U (en) | 2012-09-12 |
Family
ID=46780830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204844646U Expired - Fee Related CN202431374U (en) | 2011-11-29 | 2011-11-29 | Exhaust back pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202431374U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670721A (en) * | 2013-11-28 | 2014-03-26 | 中北大学 | Two-stroke engine scavenging back pressure valve |
| CN111577436A (en) * | 2019-02-18 | 2020-08-25 | 波森公司 | Air flap device |
-
2011
- 2011-11-29 CN CN2011204844646U patent/CN202431374U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670721A (en) * | 2013-11-28 | 2014-03-26 | 中北大学 | Two-stroke engine scavenging back pressure valve |
| CN103670721B (en) * | 2013-11-28 | 2016-03-30 | 中北大学 | A kind of two stroke engine scavenging back pressure valve |
| CN111577436A (en) * | 2019-02-18 | 2020-08-25 | 波森公司 | Air flap device |
| EP3699416A1 (en) * | 2019-02-18 | 2020-08-26 | Friedrich Boysen GmbH & Co. KG | Flap device |
| US11220982B2 (en) | 2019-02-18 | 2022-01-11 | Friedrich Boysen Gmbh & Co. Kg | Flap device |
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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: 20120912 Termination date: 20191129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |