CN103174553A - Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality - Google Patents
Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality Download PDFInfo
- Publication number
- CN103174553A CN103174553A CN2013101083350A CN201310108335A CN103174553A CN 103174553 A CN103174553 A CN 103174553A CN 2013101083350 A CN2013101083350 A CN 2013101083350A CN 201310108335 A CN201310108335 A CN 201310108335A CN 103174553 A CN103174553 A CN 103174553A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- seat
- honour
- egr
- 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.)
- Pending
Links
Images
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
- Lift Valve (AREA)
Abstract
The invention discloses a vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality. The vacuum EGR valve structure capable of enhancing the valve rod motion verticality comprises a valve cover and a valve seat which are installed in a mutually matched mode, a valve rod is arranged in a cavity formed by the valve cover and the valve seat, the upper portion of the valve rod is positioned with an upper seat through a lower seat, a leather film is arranged between the lower seat and the upper seat, and the edge of the leather film is tightly pressed at a connecting position of the valve cover and the valve seat. A spring used for resetting the valve rod is arranged on the inner wall of the valve cover. A thread section provided with a thread is arranged at the top end of the valve rod, and is installed with a nut in a matched mode. A clamping groove is formed on the upper portion of the valve rod. A seal mechanism is arranged on the periphery of the clamping groove in a sleeved mode. The valve rod is tightly pressed on the upper seat under the action of the nut and through the seal mechanism. According to the EGR valve structure, the valve rod is enabled to keep the good verticality in the process of assembling, the noise produced by inclination of the valve rod in the working process of an EGR valve is removed, and working reliability of the EGR valve is improved.
Description
Technical field
The present invention relates to a kind of EGR valve arrangement in engine exhaust emission control gear field, particularly engine exhaust emission gas recirculation system.
Background technique
The EGR valve is mainly used in regulating the flow of controlling EGR gas in engine exhaust-gas recirculating system (egr system), vacuum EGR valve is by the position of the size adjustment valve rod of degree of vacuum in vacuum chamber, further control the aperture size of suction port, thereby adjusting exhaust gas flow, return to cylinder after making waste gas and fresh air mixing by a certain percentage and carry out recirculation, with reduction combustor inner cylinder temperature and velocity of combustion, thus the further discharge amount that reduces NOX.
At present vacuum EGR valve is in assembly process, usually first with spring fitting in valve gap, be assembled into one after then valve rod being passed successively lower, epithelium and the seat of honour; Again epithelium is placed on valve seat at last, compresses by valve gap.Due to spring and the valve gap gap larger, so the EGR valve easily causes spring to tilt in being press-fitted process, thereby causes the EGR valve valve rod that is connected with the spring bottom can not vertical motion in movement process, can only do the motion of relative tilt.In addition, all adopt the mode of revolving riveting in the process of the valve rod upper end of EGR valve and seat of honour assembling, make valve rod produce distortion owing to being subject to inhomogeneous axial impact force in revolving the process of riveting, inclination when further strengthening stem movement, thereby make the fricting movement of doing relative tilt between valve rod and valve seat, not only easily damage valve rod, and can produce larger noise in the course of the work.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of EGR structure that can guarantee valve seat medi-spring and valve rod perpendicularity, the inclination during with the reduction stem movement, and noise decrease further improves the reliability of EGR valve work.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Strengthen the vacuum EGR valve arrangement of stem movement perpendicularity, comprise equipped mutually valve gap and valve seat, be provided with the valve rod that stretches out valve seat in the cavity that valve gap and valve seat form, the top of valve rod is by being positioned at lower and location, the seat of honour of cavity, be provided with the epithelium that cavity is divided into two Room, up and down between described lower and the seat of honour, the edge of epithelium is pressed on the joint of valve gap and valve seat; Be provided with the spring be used to the valve rod that resets on the valve gap inwall; The top of described valve rod is for being provided with externally threaded thread section, and thread section is fitted with the nut that press-fits valve rod; The top that valve rod is close to the seat of honour is provided with draw-in groove, and the draw-in groove periphery is set with sealing mechanism; Described valve rod is pressed on the seat of honour by sealing mechanism under the effect of nut.
The concrete structure of described sealing mechanism is: described sealing mechanism comprises and is inlaid in the seal washer that is adjacent to the seat of honour in draw-in groove and is sleeved on the rubber washer between nut and seal washer and pad on valve rod.
Improvement of the present invention is: the bottom that described valve rod is positioned at below valve seat is provided with the flat position of being convenient to the clamping valve rod.
Further improvement of the present invention is: described valve rod is equipped mutually with lower by lower seat board.
Improvement of the present invention also is: the upper end of described spring is fixedly connected on the roof of valve gap by the spring seat of honour.
Owing to having adopted above technological scheme, the invention technological progress is as follows.
The present invention is by changing the structure of valve stem tip, and then change valve rod and the seat of honour and lower 's assembling mode, solved and produced the problem of distortion owing to being subject to inhomogeneous axial impact force due to what employing revolved that riveting assembling mode exists in assembly process, make valve rod keep good perpendicularity in assembly process, eliminated the noise that tilts to produce due to valve rod in EGR valve working procedure.The setting of sealing mechanism between valve rod and the seat of honour can prevent effectively that waste gas is leaked in vacuum chamber from the circumferential surface of valve rod, has guaranteed the sealability of EGR valve.Clamping valve rod in assembly process is convenient in the flat position that the valve rod bottom arranges, to reduce the damage to valve rod.Valve rod is equipped with lower by lower seat board, can accurately locate the central axis of valve rod, prevents from that valve rod and lower are equipped with not agree with and cause valve rod to rock.
Spring in the present invention is arranged on valve gap by the spring seat of honour, can increase the area of contact of spring and valve gap, make the point of action of spring force evenly distribute on the valve gap circumferencial direction, can be because of active force inhomogeneous and run-off the straight on valve gap thereby guarantee to make when making progress vertical motion spring when valve rod, further effectively reduce the noise that valve rod produces because of banking motion, improve the reliability of EGR valve work.
Description of drawings
Fig. 1 is the structural representation of valve rod of the present invention.
Fig. 2 is structural representation of the present invention.
Wherein: 1, valve rod, 2, draw-in groove, 3, thread section, 4, flat position, 5, lower seat board, 6, lower, 7, epithelium, 8, the seat of honour, 9, seal washer, 10, pad, 11, rubber washer, 12, nut, 13, vacuum chamber, 14, the spring seat of honour, 15, valve gap, 16, spring, 17, valve seat.
Embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is further elaborated.
A kind of vacuum EGR valve arrangement that strengthens the stem movement perpendicularity, its structure as shown in Figure 2.Vacuum EGR valve comprises equipped mutually valve gap 15 and valve seat 17, is provided with the valve rod 1 that stretches out valve seat 17 in the cavity that valve gap and valve seat form, and the top of valve rod 1 is by being positioned at lower 6 and 8 location, the seat of honour of cavity.Be provided with epithelium 7 between lower seat 6 and the seat of honour 8, the edge of epithelium is pressed on the joint of valve gap 15 and valve seat 17, is used for cavity is divided into two Room, up and down, and upper chamber is vacuum chamber 13.
The structure of valve rod 1 as shown in Figure 1, the top of valve rod is for being provided with externally threaded thread section 3, thread section 3 is fitted with the nut 12 that press-fits valve rod.The top that valve rod 1 is close to the seat of honour 8 is provided with draw-in groove 2, and draw-in groove 2 peripheries are set with sealing mechanism.The bottom that valve rod 1 is positioned at valve seat 17 belows is provided with flat position 4, is convenient to clamping valve rod in the process of assembling valve rod.
Sealing mechanism comprises seal washer 9, pad 10 and the rubber washer 11 that is sleeved on valve rod, and wherein seal washer 9 is inlaid in draw-in groove 2, and the lower end surface of seal washer is adjacent on the seat of honour 8, and pad 10 is between seal washer 9 and rubber washer 11.Valve rod is being pressed on the seat of honour 8 by sealing mechanism under the effect of nut.
Be provided with spring 16 in vacuum chamber 13, be used for resetting valve rod 1.The top of spring 16 is fixedly connected on the roof of valve gap 15 by the spring seat of honour 14, and the bottom of spring 16 is fixed on the seat of honour 8.The concentricity axis of medi-spring of the present invention and valve rod.
When the present invention assembles, at first the upper end of valve rod is passed successively lower seat board 5, lower 6, epithelium 7, the seat of honour 8, the draw-in groove end clamps seal washer 9, seal washer 9 upper end suit pad 10 and rubber washers 11, clamp at last 4 places, flat position of valve rod 1, by screwing nut 12, make epithelium 7, seal washer 9 and rubber washer 11 extrusion-deformations, valve rod is assemblied on the seat of honour and lower.Secondly valve seat is passed in the bottom of valve rod, makes the edge of epithelium be positioned at the upper edge of valve seat, then on the seat of honour mounting spring 16, and make spring and the concentricity axis of valve rod.Then the welding spring seat of honour 14 on the roof of valve gap is fixedly connected on the top of spring on the spring seat of honour 14.At last valve gap is fitted in and namely completes assembling work on valve seat.
Claims (5)
1. vacuum EGR valve arrangement that strengthens the stem movement perpendicularity, comprise equipped mutually valve gap (15) and valve seat (17), be provided with the valve rod (1) that stretches out valve seat (17) in the cavity that valve gap and valve seat form, lower (6) and the seat of honour (8) location of the top of valve rod (1) by being positioned at cavity, be provided with the epithelium (7) that cavity is divided into two Room, up and down between described lower (6) and the seat of honour (8), the edge of epithelium is pressed on the joint of valve gap (15) and valve seat (17); Be provided with the spring (16) be used to the valve rod that resets (1) on valve gap (15) inwall; It is characterized in that: the top of described valve rod (1) is for being provided with externally threaded thread section (3), and thread section (3) is fitted with the nut (12) that press-fits valve rod; The top that valve rod (1) is close to the seat of honour (8) is provided with draw-in groove (2), and draw-in groove (2) periphery is set with sealing mechanism; Described valve rod is being pressed on by sealing mechanism on the seat of honour (8) under the effect of nut.
2. the vacuum EGR valve arrangement of enhancing stem movement perpendicularity according to claim 1 is characterized in that: described sealing mechanism comprises and is inlaid in the seal washer (9) that is adjacent to the seat of honour (8) in draw-in groove (2) and is sleeved on rubber washer (11) and the pad (10) that is positioned on valve rod (1) between nut (12) and seal washer (9).
3. the vacuum EGR valve arrangement of enhancing stem movement perpendicularity according to claim 1 is characterized in that: the bottom that described valve rod (1) is positioned at valve seat (17) below is provided with the flat position (4) of being convenient to the clamping valve rod.
4. the vacuum EGR valve arrangement of enhancing stem movement perpendicularity according to claim 1 is characterized in that: described valve rod is equipped with mutually by lower seat board (5) and lower (6).
5. the vacuum EGR valve arrangement of enhancing stem movement perpendicularity according to claim 1, it is characterized in that: the upper end of described spring is fixedly connected on the roof of valve gap (15) by the spring seat of honour (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101083350A CN103174553A (en) | 2013-03-29 | 2013-03-29 | Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101083350A CN103174553A (en) | 2013-03-29 | 2013-03-29 | Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103174553A true CN103174553A (en) | 2013-06-26 |
Family
ID=48634661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101083350A Pending CN103174553A (en) | 2013-03-29 | 2013-03-29 | Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103174553A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865739A (en) * | 2005-05-16 | 2006-11-22 | 闵育秀 | Control valve of freon packing container and method for manufacturing same |
| CN101855482A (en) * | 2007-12-07 | 2010-10-06 | 费希尔控制产品国际有限公司 | Ring sealed diaphragm |
| CN201620974U (en) * | 2009-12-30 | 2010-11-03 | 沈阳斯瓦特汽车零部件有限公司 | Exhaust gas recirculation valve |
| CN201772073U (en) * | 2010-08-26 | 2011-03-23 | 中国船舶重工集团公司第七○五研究所 | High-pressure air valve |
| CN102297285A (en) * | 2011-08-07 | 2011-12-28 | 无锡隆盛科技有限公司 | Sealing mechanism of exhaust brake valve |
| CN203146149U (en) * | 2013-03-29 | 2013-08-21 | 无锡隆盛科技股份有限公司 | Vacuum EGR valve structure enhancing valve rod motion perpendicularity |
-
2013
- 2013-03-29 CN CN2013101083350A patent/CN103174553A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865739A (en) * | 2005-05-16 | 2006-11-22 | 闵育秀 | Control valve of freon packing container and method for manufacturing same |
| CN101855482A (en) * | 2007-12-07 | 2010-10-06 | 费希尔控制产品国际有限公司 | Ring sealed diaphragm |
| CN201620974U (en) * | 2009-12-30 | 2010-11-03 | 沈阳斯瓦特汽车零部件有限公司 | Exhaust gas recirculation valve |
| CN201772073U (en) * | 2010-08-26 | 2011-03-23 | 中国船舶重工集团公司第七○五研究所 | High-pressure air valve |
| CN102297285A (en) * | 2011-08-07 | 2011-12-28 | 无锡隆盛科技有限公司 | Sealing mechanism of exhaust brake valve |
| CN203146149U (en) * | 2013-03-29 | 2013-08-21 | 无锡隆盛科技股份有限公司 | Vacuum EGR valve structure enhancing valve rod motion perpendicularity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104890887B (en) | Adopt supersonic speed, the hypersonic inlet of the inoperative control method of pneumatic type | |
| US10364807B2 (en) | Method and device for actuating an electrically commutated fluid working machine | |
| CN203146149U (en) | Vacuum EGR valve structure enhancing valve rod motion perpendicularity | |
| CN203783672U (en) | Intake valve seat ring of automobile engine | |
| CN103174553A (en) | Vacuum exhaust gas recirculation (EGR) valve structure capable of enhancing valve rod motion verticality | |
| KR102453360B1 (en) | Intake port | |
| CN202348485U (en) | Carbon tank solenoid valve | |
| CN202187818U (en) | Engine piston cooling nozzle | |
| CN204253192U (en) | A kind of auto idle speed control valve | |
| CN104153895B (en) | The pneumatic fuel limit device of mixed combustion engine | |
| CN209129774U (en) | The rotatable synchronous oil injection structure of two-chamber EFI atomizer | |
| CN203656320U (en) | Ball valve bonnet | |
| CN203463161U (en) | Valve oil seal easy to mount and hard to demount and applied to turbo-charging and cylinder direct injection engine | |
| CN208311608U (en) | A kind of axial-flow type pressure reducing valve | |
| CN204572287U (en) | A kind of engine air inlet tube | |
| CN204692127U (en) | A kind of mining energy-saving negative ion blower fan | |
| CN203584491U (en) | Air valve rocker component and gasoline engine | |
| CN203641532U (en) | Installation structure of radial seal valve parts | |
| CN110397529A (en) | The fuel dispenser modular construction of engine embedded one-way valve structures | |
| CN204783354U (en) | Air cleaner installation component | |
| CN104405534B (en) | A kind of intelligent carburetor for small universal gasoline engine | |
| CN204691875U (en) | A kind of linkage structure of engine exhaust pipe | |
| CN204060946U (en) | The pneumatic fuel limit device of mixing combustion engine | |
| CN203742800U (en) | Throttle valve and idle speed control device for engine | |
| CN208831199U (en) | A kind of box-like air valve of compressor set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130626 |