CN110056454A - A kind of high leakproofness exhaust gas recirculation valve - Google Patents
A kind of high leakproofness exhaust gas recirculation valve Download PDFInfo
- Publication number
- CN110056454A CN110056454A CN201910418366.3A CN201910418366A CN110056454A CN 110056454 A CN110056454 A CN 110056454A CN 201910418366 A CN201910418366 A CN 201910418366A CN 110056454 A CN110056454 A CN 110056454A
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- China
- Prior art keywords
- valve
- hole
- valve rod
- attachment base
- pin shaft
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/68—Closing members; Valve seats; Flow passages
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of high leakproofness exhaust gas recirculation valve, it include shell, valve seat, valve member, electric machine assembly and chip assembly, the valve member includes valve rod and valve, the valve rod is socketed with axle sleeve, and described valve rod one end is provided with bearing, and the bindiny mechanism includes attachment base, through-hole is provided on the valve rod, the attachment base offers connecting hole, is equipped with a pin shaft in the connecting hole and through-hole, has gap between the through-hole and pin shaft.The beneficial effects of the present invention are: through-hole is arranged on valve rod, connecting hole is set on the attachment base of valve, then it connect valve with valve rod by pin shaft, after pin shaft both ends are fixed on attachment base again, finally by the gap between pin shaft and through-hole, valve member is made to have the function of a universal adjustment, realizes automatic guide, by clearance fine adjustment, the sealing performance of waste gas circulating valve is significantly improved with lower manufacturing cost.
Description
Technical field
The present invention relates to gas recirculation system fields, and in particular to a kind of high leakproofness exhaust gas recirculation valve.
Background technique
With the increase year by year of automobile quantity, the harm of vehicle exhaust bring is increasingly severe.Contain one in vehicle exhaust
Carbonoxide, hydrocarbon, nitrogen oxides and particle.Wherein, nitrogen oxides not only threatens people's health, but also can be serious
Environment is polluted, such as causes photochemical fog.Each emission regulation proposes to be strict with to the discharge of nitrogen oxides as a result,.EGR
(Exhaust Gas Recirculation, abbreviation EGR, exhaust gas recycling) as the technology that can effectively reduce nitrogen oxides,
It is widely used in automobile engine.
EGR is directed to the inlet end of air flue by the exhaust gas that suitable engine is discharged, and subtracts to the waste gas recovery of discharge
Row, and the fresh air mixed with the fresh air of sucking at inlet end to dilute fresh air, after dilution enters combustion chamber,
By reducing peak combustion temperatures to inhibit the generation of nitrogen oxides and to achieve the purpose that reduce discharge nitrogen oxides.
EGR valve (exhaust gas recirculation valve) is the device for controlling exhaust gas and entering engine chamber, and wherein valve member is
An important component in exhaust gas recirculation valve, effect are that its suitable setting angle and oblique angle control exhaust gas recirculation valve
It opens and is closed, control the exhaust gas flow in entire exhaust gas recirculation event, make the recirculation volume of exhaust gas in each work
Point all reaches optimum, so that combustion process be made to be in optimal situation always, the final pollution guaranteed in emission at
Part is minimum.
Existing valve member includes valve and valve rod, wherein between valve and valve rod mostly by welding into
Row connection, this mode by valve and valve rod welding just can inevitably have a geometric tolerance, and during being generated due to exhaust gas
It is always maintained at high temperature, so that can only seal by the way of sealing firmly between valve and EGR valve body, leads to existing EGR valve
Sealing performance is poor, so that EGR valve producer cannot have breakthrough always in the product qualified rate in leakproofness.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art,
A kind of high leakproofness exhaust gas recirculation valve of energy automatic guide seal valve seat is provided.
To achieve the above object, the present invention provides the following technical scheme that a kind of high leakproofness exhaust gas recirculation valve, packet
Include shell, be mounted on the intracorporal valve seat of shell, the valve member that one end is contacted with valve seat, setting valve member is controlled in shell
The electric machine assembly of stroke movement and the chip assembly that electric machine assembly one end is arranged in, the valve member includes valve rod and valve
Door, it is characterised in that: described valve rod one end passes through valve seat and is socketed with axle sleeve, and the other end is connected to valve by bindiny mechanism,
The valve is abutted with valve seat, and the end that the valve rod corresponds to axle sleeve one end is provided with bearing, and the bindiny mechanism includes
Have and be set to the attachment base that valve corresponds to valve rod one end, valve rod one end for be inserted on the position of attachment base be provided with it is logical
Hole offers connecting hole corresponding with the through-hole on the attachment base, is equipped with a pin shaft in the connecting hole and through-hole,
There is gap between the through-hole and pin shaft.
By adopting the above technical scheme, concentric through-hole and connecting hole are opened up on valve rod and attachment base, then by through-hole
With a piece pin shaft of insertion in connecting hole, the both ends of pin shaft keep there are some fine tunings between valve rod and valve without departing from attachment base
Gap, be fixed on the both ends of pin shaft on attachment base by laser welding, due to through-hole on valve rod aperture be slightly larger than pin shaft
Diameter make valve rod while connecting by pin shaft with valve, and valve can be made so that will there be gap between through-hole and pin shaft
Bar can the freely all directions activity in attachment base, have a function of a universal adjustment, automatic guide realized, outside valve rod
Portion is arranged with axle sleeve, so that axle sleeve wraps valve rod, can guide the rotation direction and stem wear of valve rod, when replacement
Also axle sleeve easy to process, that replacement cost is low is only needed to change, bearing is set in the end of valve rod, enables bearing that valve rod to be supported to drive
Valve rod rotation, in waste gas circulating valve use process, waste gas circulating valve is directed to by the exhaust gas that suitable engine is discharged
The inlet end of air flue, and mix with the fresh air of sucking at inlet end the fresh air to dilute fresh air, after dilution
Into combustion chamber, collected vehicle status signal is transferred to ECU COMPREHENSIVE CALCULATING by chip assembly, and ECU issues one to EGR valve again
The voltage output for determining duty ratio, by the voltage control electric machine assembly rotation angle or magnetic force size of different duty to control shaft
The stem movement held controls useless in entire exhaust gas recirculation event to control the unlatching and closure of waste gas circulating valve
Throughput makes the recirculation volume of exhaust gas reach optimum in each operating point, promotes to connect with valve rod by driving stem
Clearance fine adjustment is constantly carried out between the valve and valve seat connect, and then is made up in manufacturing process, the influence that geometric tolerance is brought, from
And combustion process is made to be in optimal situation always, and it is final to guarantee that the succession in emission is minimum, with lower manufacture
Cost significantly improves the leakproofness of waste gas circulating valve.
A kind of above-mentioned high leakproofness exhaust gas recirculation valve, can be further arranged to: the valve rod is correspondingly connected with the one of seat
End is equipped with the limiting section of limitation valve rod intubating length, and the diameter of the limiting section is greater than the diameter of attachment base.
By adopting the above technical scheme, one limit for being greater than attachment base diameter is set in one end that valve rod is correspondingly connected with seat
One end of valve rod insertion attachment base is arranged in portion, limiting section, and the length in control valve rod insertion attachment base keeps valve rod complete
Valve is abutted to, when valve and attachment base assemble, is inserted directly into until attachment base is abutted against with limiting section, rotation valve rod makes to connect
It is concentric with through-hole to connect hole, so that it may be inserted into pin shaft, keep assembly more convenient.
A kind of above-mentioned high leakproofness exhaust gas recirculation valve, can be further arranged to: the both ends of the pin shaft and connecting hole
Between connected by way of laser welding.
By adopting the above technical scheme, pin shaft both ends is enable to be fixed on attachment base by laser welding, and it is logical on valve rod
Hole enables valve rod to be movably connected in attachment base, the mode of laser welding can be more stable because being greater than the internal diameter of pin shaft
Pin shaft and connecting hole are fixed together.
The beneficial effects of the present invention are: through-hole is arranged on valve rod, connecting hole is set on the attachment base of valve, is then led to
Crossing pin shaft connect valve with valve rod, then after pin shaft both ends are fixed on attachment base, finally by between pin shaft and through-hole
Gap makes valve member have the function of a universal adjustment, realizes that automatic guide makes up manufacturing process by clearance fine adjustment
In, the influence that geometric tolerance is brought significantly improves the sealing performance of waste gas circulating valve with lower manufacturing cost.
Invention is further described in detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the embodiment of the present invention.
Fig. 2 is the cross-sectional view of the embodiment of the present invention.
Fig. 3 is the stereoscopic schematic diagram of valve member of the embodiment of the present invention.
Fig. 4 is the structural schematic diagram of valve member of the embodiment of the present invention.
Fig. 5 is the sectional view along AA of Fig. 4.
Fig. 6 is the structural schematic diagram of valve member of embodiment of the present invention second embodiment.
Fig. 7 is the cross-sectional view of valve member of embodiment of the present invention second embodiment.
Fig. 8 is the structural schematic diagram of valve member of embodiment of the present invention 3rd embodiment.
Fig. 9 is the cross-sectional view of valve member of embodiment of the present invention 3rd embodiment.
Specific embodiment
As Figure 1-Figure 5, the valve that a kind of high leakproofness exhaust gas recirculation valve includes shell 1, is mounted in shell 1
Valve member 2 that seat 11, one end contacts with valve seat 11, the electric machine assembly that control 2 stroke movement of valve member is set in shell 1
3 and the chip assembly 4 of 3 one end of electric machine assembly is set, the valve member 2 includes valve rod 21 and valve 22, feature
Be: described 21 one end of valve rod passes through valve seat 11 and is socketed with axle sleeve 5, and the other end is connected to valve 11, institute by bindiny mechanism
It states valve 22 to abut with valve seat 11, the end of corresponding 5 one end of axle sleeve of the valve rod 21 is provided with bearing 6, the connection machine
Structure includes the attachment base 221 for being set to corresponding 21 one end of valve rod of valve 22, and described 21 one end of valve rod is for being inserted into attachment base
It is provided with through-hole 211 on 221 position, connecting hole 222 corresponding with the through-hole 211 is offered on the attachment base 221,
It is equipped with a pin shaft 7 in the connecting hole 222 and through-hole 211, has gap, the valve rod between the through-hole 211 and pin shaft 7
21 one end for being correspondingly connected with seat 221 are equipped with the limiting section 212 of limitation 21 intubating length of valve rod, and the diameter of the limiting section 212 is big
It is connected by way of laser welding between the diameter of attachment base 221, the both ends and connecting hole 222 of the pin shaft 7.
Embodiment 1: as Figure 1-Figure 5, EGR valve is mounted on engine body, the inlet end and engine of EGR valve
Exhaust manifold connection, the exhaust end of EGR valve are connect with engine air inlet tube, and the portion being discharged after engine operation enters
EGR valve, then engine air inlet tube is sent by EGR valve, in waste gas circulating valve use process, waste gas circulating valve passes through will be suitable
The exhaust gas of engine discharge is directed to the inlet end of air flue, and mixes with the fresh air of sucking at inlet end fresh to dilute
Air, the fresh air after dilution enter combustion chamber, and collected vehicle status signal is transferred to vehicle ECU by chip assembly 4
COMPREHENSIVE CALCULATING, vehicle ECU issue the voltage output of certain duty ratio to EGR valve again, control motor by the voltage of different duty
Component 3 rotates angle or magnetic force size to control the 21 exercise EGR exhaust gas management system of valve rod on bearing 6, valve
21 one end of bar is connect by bearing 6 with electric machine assembly 3, and the other end, which is inserted into attachment base 222, passes through pin shaft 7 and 22 activity of valve seat even
It connects, the both ends of pin shaft 7 are connect with connecting hole 222 by laser welding, since the aperture of through-hole 211 on valve rod 21 is slightly larger than pin shaft
7 diameter so that will there be gap between through-hole 211 and pin shaft 7, make valve rod 21 connect by pin shaft 7 with valve 22 it is same
When, and the freely all directions activity in attachment base 222 of valve rod 21 can be enable, have the function of a universal adjustment, realizes
Automatic guide controls the exhaust gas flow in entire exhaust gas recirculation event to control the unlatching and closure of waste gas circulating valve,
So that the recirculation volume of exhaust gas is reached optimum in each operating point, promotes to connect with valve rod 21 by driving stem 21
Clearance fine adjustment is constantly carried out between valve 22 and valve seat 11, and then is made up in manufacturing process, the influence that geometric tolerance is brought, from
And combustion process is made to be in optimal situation always, and it is final to guarantee that the succession in emission is minimum, with lower manufacture
Cost significantly improves the leakproofness of waste gas circulating valve, existing leakproofness product qualified rate has been increased to 99% from 70%, in fact
The quantum jump of Product Process is showed.
Embodiment 2: as Figure 6-Figure 7, one attachment base 221 is set in one end of the corresponding valve 22 of valve rod 21, even
Connecting hole 222 is opened up on joint chair 221, one end one root cutting of setting that valve 22 is correspondingly connected with seat 221 enters the connection in attachment base 221
Column 8, one end that connecting column 8 is correspondingly connected with hole 222 offer through-hole 211, after pin shaft 7 is inserted into connecting hole 222 and through-hole 211,
Pin shaft 7 is fixed on the both ends of attachment base 221 by laser welding without departing from attachment base 221 by the both ends of pin shaft 7, due to pin shaft 7
Diameter be less than the diameter of through-hole 211 and make valve 22 by pin shaft 7 so that will there be gap between through-hole 211 and pin shaft 7
While connection with valve rod 21, and the freely all directions activity in attachment base 221 of valve 22 can be enable, have one it is universal
The function of adjusting realizes that automatic guide is made up in manufacturing process by clearance fine adjustment, the influence that geometric tolerance is brought, with lower
Manufacturing cost significantly improve the leakproofness of waste gas circulating valve.
Embodiment 3: as illustrated in figs. 8-9, the connection being inserted into for valve rod 21 is equipped in one end of the corresponding valve rod 21 of valve 22
Seat 221, described 21 one end of valve rod are provided with through-hole 211 for being inserted on the position of attachment base 221, are equipped in through-hole 211
A piece telescopic pin 7 is equipped with the spring 71 to stretch for telescopic pin 7 inside telescopic pin 7, opened up inside attachment base 221 there are two with it is logical
The concentric link slot 223 in hole 211, telescopic pin 3 are set to inside link slot 223, are retracted 7 both ends of telescopic pin in assembly and are led to
Behind hole 211, valve rod 21 is inserted into attachment base 221, after rotary valve rod 21, the spring 71 of telescopic pin 7 can be because of resilient force
The both ends of telescopic pin 7 enter in link slot 223, make the flexible connection of valve rod 21 and valve seat 22, between telescopic pin 7 and through-hole 211
There is gap, makes valve 22 while connecting by telescopic pin 7 with valve rod 21, and valve rod 21 can be enable freely in attachment base
All directions activity in 221 has the function of a universal adjustment, realizes that automatic guide is made up and manufactured by clearance fine adjustment
Cheng Zhong, the influence that geometric tolerance is brought significantly improve the leakproofness of waste gas circulating valve with lower manufacturing cost.
The foregoing is merely a prefered embodiment of the invention, all with the present invention therefore, it does not limit the scope of the patents of the invention
Specification and simply modification and the equivalent structure variation for it of schema content institute, be intended to be limited solely by scope of patent protection of the invention it
It is interior.
Claims (3)
1. a kind of high leakproofness exhaust gas recirculation valve includes shell, be mounted on the intracorporal valve seat of shell, one end is contacted with valve seat
Valve member is arranged in the electric machine assembly for controlling valve member stroke movement in shell and the core of electric machine assembly one end is arranged in
Piece component, the valve member include valve rod and valve, it is characterised in that: described valve rod one end passes through valve seat and is socketed with axis
Set, the other end are connected to valve by bindiny mechanism, and the valve is abutted with valve seat, and the valve rod corresponds to axle sleeve one end
End is provided with bearing, and the bindiny mechanism includes the attachment base for being set to valve and corresponding to valve rod one end, described valve rod one end
It is provided with through-hole for being inserted on the position of attachment base, connection corresponding with the through-hole is offered on the attachment base
It is equipped with a pin shaft in hole, the connecting hole and through-hole, has gap between the through-hole and pin shaft.
2. a kind of high leakproofness exhaust gas recirculation valve according to claim 1, it is characterised in that: the valve rod is correspondingly connected with
One end of seat is equipped with the limiting section of limitation valve rod intubating length, and the diameter of the limiting section is greater than the diameter of attachment base.
3. a kind of high leakproofness exhaust gas recirculation valve according to claim 1 or 2, it is characterised in that: the two of the pin shaft
It is connected by way of laser welding between end and connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418366.3A CN110056454A (en) | 2019-05-20 | 2019-05-20 | A kind of high leakproofness exhaust gas recirculation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910418366.3A CN110056454A (en) | 2019-05-20 | 2019-05-20 | A kind of high leakproofness exhaust gas recirculation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110056454A true CN110056454A (en) | 2019-07-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910418366.3A Pending CN110056454A (en) | 2019-05-20 | 2019-05-20 | A kind of high leakproofness exhaust gas recirculation valve |
Country Status (1)
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| CN (1) | CN110056454A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090070615A (en) * | 2007-12-27 | 2009-07-01 | 한국델파이주식회사 | Vehicle Exhaust Gas Recirculation System |
| CN102635467A (en) * | 2012-03-30 | 2012-08-15 | 常州市美特精密电机有限公司 | Automobile exhaust gas recycling circulating valve |
| JP2014001764A (en) * | 2012-06-15 | 2014-01-09 | Denso Corp | Valve control device |
| CN204212877U (en) * | 2014-11-10 | 2015-03-18 | 大陆汽车电子(芜湖)有限公司 | Sealing system and comprise the exhaust gas recirculation valve of sealing system |
| CN105715416A (en) * | 2016-04-08 | 2016-06-29 | 浙江银轮机械股份有限公司 | Valve used for exhaust gas recirculation of internal combustion engine |
| CN205895439U (en) * | 2016-08-10 | 2017-01-18 | 瑞安市阳宇机动车零部件有限公司 | Automatically controlled formula exhaust gas recirculation valve |
| JP2017172609A (en) * | 2016-03-21 | 2017-09-28 | 愛三工業株式会社 | Flow control valve |
| CN207212525U (en) * | 2017-08-28 | 2018-04-10 | 温州汇众汽车电器有限公司 | Waste gas recycles EGR valve |
| CN208220922U (en) * | 2018-04-27 | 2018-12-11 | 瑞安市立安汽车部件有限公司 | A kind of exhaust gas recirculation valve with sealing device |
| CN209959374U (en) * | 2019-05-20 | 2020-01-17 | 瑞安市科亿汽车配件有限公司 | High leakproofness exhaust gas recirculation valve |
-
2019
- 2019-05-20 CN CN201910418366.3A patent/CN110056454A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090070615A (en) * | 2007-12-27 | 2009-07-01 | 한국델파이주식회사 | Vehicle Exhaust Gas Recirculation System |
| CN102635467A (en) * | 2012-03-30 | 2012-08-15 | 常州市美特精密电机有限公司 | Automobile exhaust gas recycling circulating valve |
| JP2014001764A (en) * | 2012-06-15 | 2014-01-09 | Denso Corp | Valve control device |
| CN204212877U (en) * | 2014-11-10 | 2015-03-18 | 大陆汽车电子(芜湖)有限公司 | Sealing system and comprise the exhaust gas recirculation valve of sealing system |
| JP2017172609A (en) * | 2016-03-21 | 2017-09-28 | 愛三工業株式会社 | Flow control valve |
| CN105715416A (en) * | 2016-04-08 | 2016-06-29 | 浙江银轮机械股份有限公司 | Valve used for exhaust gas recirculation of internal combustion engine |
| CN205895439U (en) * | 2016-08-10 | 2017-01-18 | 瑞安市阳宇机动车零部件有限公司 | Automatically controlled formula exhaust gas recirculation valve |
| CN207212525U (en) * | 2017-08-28 | 2018-04-10 | 温州汇众汽车电器有限公司 | Waste gas recycles EGR valve |
| CN208220922U (en) * | 2018-04-27 | 2018-12-11 | 瑞安市立安汽车部件有限公司 | A kind of exhaust gas recirculation valve with sealing device |
| CN209959374U (en) * | 2019-05-20 | 2020-01-17 | 瑞安市科亿汽车配件有限公司 | High leakproofness exhaust gas recirculation valve |
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| Title |
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| 刘波;: "废气再循环系统", 现代零部件, no. 04, pages 42 - 43 * |
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Application publication date: 20190726 |
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| RJ01 | Rejection of invention patent application after publication |