CN104024597A - Valve device and secondary air introduction device - Google Patents
Valve device and secondary air introduction device Download PDFInfo
- Publication number
- CN104024597A CN104024597A CN201380004678.0A CN201380004678A CN104024597A CN 104024597 A CN104024597 A CN 104024597A CN 201380004678 A CN201380004678 A CN 201380004678A CN 104024597 A CN104024597 A CN 104024597A
- Authority
- CN
- China
- Prior art keywords
- communication passage
- main
- draught excluder
- opening portion
- secondary air
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Multiple-Way Valves (AREA)
Abstract
To provide: a secondary air introduction device configured so that after-burn is easily and effectively prevented and so that a reed valve can be easily cooled; and a valve device used for the secondary air introduction device. [Solution] Depending on the axial position of a drive rod (30) driven by a diaphragm (20), a shutoff valve body (40) is located at a position (fully open position) at which a connection passage (10) within a casing (4) is fully open, a position (fully closed position) at which the connection passage (10) is fully closed, or a position (small-amount-of-flow position) at which the primary opening (10a) of the connection passage (10) is closed and the secondary opening (10b) thereof is not closed.
Description
Technical field
The present invention relates to for the secondary air lead-in device of for example petrolic waste-gas cleaning countermeasure with for the control valve unit of described secondary air lead-in device.
Background technique
In order to tackle petrolic waste-gas cleaning, feeding secondary air in known oriented waste gas, makes to be included in the secondary air lead-in device that the unburnt ingredient in waste gas burns again.For the control valve unit of this secondary air lead-in device, be set to utilize vent systems waste gas streams pulsation and pilot valve is opened to feeding secondary air.
In the secondary air lead-in device of prior art, the situation during as high speed high loaded process etc., in the situation that may to cause vent systems partly to occur overheated due to the supply of secondary air, no matter whether waste gas streams pulse, can feeding secondary air.Yet, not during feeding secondary air, can not carry out cooling action by the mobile of secondary air so completely, thereby pilot valves etc. are due to the conduction of waste gas heat or radiation and the overheated durability that lacks, and discharge also variation.
Therefore, as shown in following patent documentation 1, overheated in order to prevent pilot valve, proposed to arrange the aperture that constantly flows into a small amount of air to pilot valve direction.
Yet in the device of this prior art, pipe is a small amount of, but because air constantly flows, the cooling condition of pilot valve is good, but under the incidental situation of so-called after-burning, is difficult to effectively prevent after-burning.
Prior art document
Patent documentation
Patent documentation 1: the real public clear 57-17050 communique of Japan
Summary of the invention
The present invention makes in view of above-mentioned actual conditions, and its object is to provide a kind of after-burning that easily effectively prevents, and pilot valve cooling is also easy to secondary air lead-in device and for the control valve unit of described secondary air lead-in device.
In order to achieve the above object, control valve unit of the present invention has:
Housing, comprises the communication passage that imports ingress port and outlet port described in the ingress port of main fluid, the outlet port of discharging described main fluid and UNICOM;
Pilot valve portion, is arranged on the outlet port side of described communication passage in described enclosure interior;
Draught excluder portion, is arranged on the ingress port side of described communication passage in described enclosure interior, wherein,
Described draught excluder portion comprises:
Driveshaft, one end is connected to barrier film, according to the pressure by the separated pressure chamber of barrier film, moves freely in the axial direction; With
Draught excluder main body, is fixed on described bar and moves axially together with described bar,
According to the axial position of described driveshaft, described draught excluder main body is movable to position (fully open position), the described communication passage main passage in complete totally enclosed position (full close position), described communication passage in of described communication passage in opening completely and stops up but the unplugged position of subaisle (position of circulating on a small quantity).
Control valve unit of the present invention can be suitable for the secondary air lead-in device that waste-gas cleaning countermeasure is used.That is, from outlet port, the secondary air of more amount (example of main fluid) is sent into waste gas system, and when hope promotes waste-gas cleaning, driveshaft is moved axially, thereby make draught excluder main body in fully open position.
In addition, in vent systems, there is situation that the possibility of after-burning is high etc., driveshaft is moved axially, thereby make draught excluder main body in full close position.Thus, block completely to vent systems air supply, thereby can greatly reduce the possibility that after-burning occurs.And, can also prevent the adverse current from vent systems to control valve unit.
And then, the possibility of after-burning exist to occur in vent systems, but this possibility is when lower, or the temperature of pilot valve portion is while surpassing setting temperature, driveshaft is moved axially, thereby make draught excluder main body in a small amount of circulation position.Thus, can make a small amount of air flow pilot valve portion, thereby easily prevent that pilot valve portion is overheated.
In the inside of described housing, the way of the described communication passage from the extremely described pilot valve of described ingress port portion, can arrange to form the main opening portion of described main passage and form and compare the secondary opening portion of the described subaisle that opening area is little with this main opening portion.
Preferably, the inside of described housing is formed with: the first valve seat, at described driveshaft, move to greatest extent vertically the position of described ingress port side, and draught excluder main body described in butt, thus described communication passage is sealed completely; With the second valve seat, at described driveshaft, move to greatest extent vertically the position of described pressure chamber side, draught excluder main body described in butt, thus stop up the main passage of described main opening portion.
Preferably, in the position of the second valve seat described in described draught excluder main body butt, allow fluid from described ingress port, to flow to described guide portion by the subaisle of described secondary opening portion.Can also form described the second valve seat in the outside of described main opening portion.
Accompanying drawing explanation
Figure 1A is the concise and to the point sectional view of control valve unit in one embodiment of the present invention, represents the fully open position of draught excluder.
Figure 1B shows the full cut-off fully open position of the draught excluder main body in the control valve unit shown in Figure 1A.
Fig. 1 C shows a small amount of circulation position of the draught excluder main body in the control valve unit shown in Figure 1A.The concise and to the point sectional view of the control valve unit of a mode of execution in the present invention, the full close position of expression draught excluder main body.
Fig. 2 is the secondary air lead-in device that has used the control valve unit shown in Figure 1A.
Symbol description
2 ... control valve unit
4 ... housing
4a ... housing body
4b ... entry end mouth mask
4c ... outlet end mouth mask
4d ... pressure chamber's cover
4f ... next door
6 ... ingress port
8 ... outlet port
10 ... communication passage
10a ... main opening portion
10b ... secondary opening portion
12 ... pilot valve portion
14 ... pressure chamber
14a ... the first pressure chamber
14b ... the second pressure chamber
16 ... draught excluder portion
20 ... barrier film
30 ... driveshaft
34 ... spring
40 ... draught excluder main body
52 ... the first valve seat
54 ... the second valve seat
60 ... motor
62 ... suction system pipe arrangement
64 ... vent systems pipe arrangement
70 ... secondary air supplying tubing
100 ... secondary air lead-in device
Embodiment
Below, based on mode of execution explanation the present invention shown in the drawings.
Control valve unit 2 shown in Figure 1A～Fig. 1 C is for purifying the secondary air lead-in device 100 of waste gas of the vent systems pipe arrangement 64 of the petrol engine 60 shown in Fig. 2.The suction port 61 that is loaded into the motor 60 of vehicle etc. is connected with suction system pipe arrangement 62, and exhaust port 63 is connected with vent systems pipe arrangement 64.
Control valve unit 2 has ingress port 6 and outlet port 8, and outlet port 8 is connected with vent systems pipe arrangement 64 by secondary air supplying tubing 70.Outside air by purifications such as diagram abridged air cleaner is directed into the inside of control valve unit 2 from ingress port 6, valve by control valve unit 2 operates, exhaust pulsation according in vent systems pipe arrangement 64, is also optionally supplied to secondary air in vent systems pipe arrangement 64 by outlet port 8.
As shown in Figure 1A～Fig. 1 C, control valve unit 2 has the housing 4 that forms the communication passage 10 from ingress port 6 to outlet port 8 in inside.Housing 4 there is the housing body 4a that forms communication passage 10 in inside, be installed on this housing body 4a and form the entry end mouth mask 4b of ingress port 6, form outlet port 8 outlet end mouth mask 4c, form the cover 4d of pressure chamber of the pressure chamber 14 that is different from communication passage 10.
In the present embodiment, the mode with the axle core of ingress port 6 and the axle core cardinal principle quadrature of outlet port 8 arranges communication passage 10.Be installed on the joint of housing body 4a at the outlet end mouth mask 4c that forms outlet port 8 near, be provided with pilot valve portion 12, the communication passage 10 between pilot valve portion 12 and ingress port 6 is provided with draught excluder portion 16.
Pilot valve portion 12 opens according to the pulsation of the waste gas streams in the vent systems pipe arrangement 64 shown in Fig. 2, and makes the secondary air of introducing from ingress port 6 be supplied to vent systems pipe arrangement 64 by outlet port 8 and secondary air supplying tubing 70.Draught excluder portion 16 is described after a while.
In the inside of housing body 4a, the way of the communication passage 10 from ingress port 6 to outlet port 8, be formed with the next door 4f that is used to form the 10a of main opening portion and secondary opening portion 10b.The opening area that is formed at the secondary opening portion 10b of next door 4f be the 10a of main opening portion opening area 1/34～1/28, compare enough little with the 10a of main opening portion.
Main opening Bu10a center, in the mode unanimous on the whole and unanimous on the whole with the axle core of ingress port 6 of the axle core with driveshaft 30, is moved axially driveshaft 30 is freely installed by bearing 32 in the inside of the communication passage 10 that comprises the 10a of main opening portion.Bearing 32 is fixed on the partition wall 4e being wholely set in housing body 4a inside.Partition wall 4e forms pressure chamber 14 and communication passage 10 is separated.
The central part of discoid barrier film 20 is fixed on driveshaft 30 first end 30a in the axial direction with the central part of the pair of discs shape retainer 18 of clamping barrier film 20 simultaneously.The outer rim of barrier film 20 is fixed on the joint part that the cover 4d of pressure chamber is installed on the upper end of housing body 4a, and barrier film 20Jiang pressure chamber 14 is separated into the first 14a of pressure chamber and the second 14b of pressure chamber.
To cover the cover 4d of pressure chamber that the mode of the first 14a of pressure chamber has, be connected with connecting tube 16.The front end of connecting tube 16 is formed with limiting holes 18.The limiting holes 18 of connecting tube is communicated with the suction system pipe arrangement 62 shown in Fig. 2 by diagram abridged pipe arrangement, the internal pressure of suction system pipe arrangement 62 is directed into the first 14a of pressure chamber, according to and the second 14b of pressure chamber between pressure difference, barrier film 20 is deformed into as shown in Figure 1A～Figure 1B, and driveshaft 30 is moved axially.
In addition, limiting holes 18 can also be not attached to the suction system pipe arrangement 62 shown in Fig. 2, but is connected to fluid pressure control device etc.And the second 14b of pressure chamber is airtight space in the present embodiment, but can also be communicated to barometric pressure.
As shown in Figure 1A～Fig. 1 C, as the second end 30b place of the lower end of driveshaft 30, be fixed with the central part of the discoid draught excluder main body 40 that forms draught excluder portion 16.Draught excluder main body 40 is fixed on the second end 30b of driveshaft 30 by pair of holders 41, the lower end of the retainer 41 butt coiled type springs 34 of upside.Below the partition wall 4e of the upper end butt housing body 4a of spring 34, by the spring force of this spring 34, can valve body 40 relatively be pressed to axial below together with driveshaft 30 with respect to housing body 4a.
Below the outer circumferential side of valve body 40, be formed with ring-type the first protuberance 42.As shown in Figure 1B, compare the pressure of the second 14b of pressure chamber, it is large that the pressure of the first 14a of pressure chamber becomes to greatest extent, driveshaft 30 is moved under the state of axial lowest positions, ring-type first protuberance 42 of valve body 40 is crimped on the first valve seat 52 forming at the inner face of entry end mouth mask 4b, and blocks completely being communicated with between ingress port 6 and communication passage 10.
Above the outer circumferential side of valve body 40, be formed with ring-type the second protuberance 44.As shown in Figure 1 C, compare the pressure of the second 14b of pressure chamber, the pressure of the first 14a of pressure chamber diminishes to greatest extent, driveshaft 30 is moved under the state of axial position, the top, ring-type second protuberance 44 of valve body 40 is crimped to the second valve seat 54 forming below forming the next door 4f of the aforesaid main opening 10a of portion, and stops up the main passage of the 10a of main opening portion.But, under this state, the secondary opening portion 10b that is formed at next door 4f, owing to being formed on the outside outside of valve body 40 (and) of the 10a of main opening portion and not stopped up by valve body 40, guarantees the connection of the communication passage 10 from ingress port 6 to pilot valve 12 by this pair opening portion 10b.
As shown in Figure 1A, the pressure between the first 14a of pressure chamber and the second 14b of pressure chamber reaches under the state of balance, and the valve body 40 of the driveshaft 30 being connected with barrier film 20 is positioned at the neutral position of the first valve seat 52 and the second valve seat 54.For this reason, valve body 40 is opened the 10a of main opening portion and secondary opening portion 10b, also open ingress port 6 simultaneously, the air of introducing from ingress port 6 is according to the switching of pilot valve portion 12, and inside from outlet port 8 to the vent systems pipe arrangement 64 shown in Fig. 2 that can be from is with flow feeding secondary air to greatest extent.
In the present embodiment, the material that forms each material of control valve unit 2 is not particularly limited, and can consist of metal, rubber, synthetic resin etc.But preferably, barrier film 20 consists of flexible part materials such as sheetmetal, synthetic resin or rubber, and valve body 40 consists of elastic members such as synthetic resin or rubber, cover 4b, 4c, 4d consist of metal etc.
The control valve unit 2 of present embodiment goes for the secondary air lead-in device 100 that the waste-gas cleaning countermeasure shown in Fig. 2 is used.That is, from exporting port 8 more amount, secondary air is sent into vent systems pipe arrangement 70, when expectation promotes waste-gas cleaning, in importing, the first 14a of pressure chamber presses, as shown in Figure 1A, make the pressure balance in the first 14a of pressure chamber and the second 14b of pressure chamber, make draught excluder main body 40 in fully open position.
In addition, in the vent systems pipe arrangement 64 shown in Fig. 2, there is situation that the possibility of after-burning is high etc., to the first 14a of pressure chamber, import the pressure higher than aforementioned middle pressure.Its result.As shown in Figure 1B, from the first 14a of pressure chamber, to the second 14b of pressure chamber, press down barrier film 20, driveshaft 30 is moved axially, thereby make draught excluder main body 40 in full close position.Thus, stop up ingress port 6 completely, the air of supplying with to vent systems pipe arrangement 64 by outlet port 8 is blocked completely, can greatly reduce the possibility that after-burning occurs.And, can prevent the adverse current from vent systems pipe arrangement 64 to control valve unit 2.
And then, the possibility of after-burning exist to occur in the inside of vent systems pipe arrangement 64, but this possibility is when lower, or the temperature of pilot valve portion 12 is while surpassing setting temperature, to the first 14a of pressure chamber, imports the pressure lower than aforementioned middle pressure.Its result, as shown in Figure 1 C, presses barrier film 20 from the second 14b of pressure chamber to the first 14a of pressure chamber, and driveshaft 30 is moved axially, an open auxiliary opening portion 10b, thus make draught excluder main body 40 in a small amount of circulation position.Thus, a small amount of air can flow to pilot valve portion 12 by secondary opening portion 10b from ingress port 6, thereby easily prevents that pilot valve portion 12 is overheated.
In addition, the present invention is not limited to above-mentioned mode of execution, can carry out various changes within the scope of the invention.
For example, control valve unit 2 of the present invention is not limited to secondary air lead-in device 100 as shown in Figure 2, can also be applicable to other devices.
Application in industry
The present invention is as such as the secondary air lead-in device for petrolic waste-gas cleaning countermeasure with for the control valve unit of described secondary air lead-in device etc.
Claims (4)
1. a control valve unit, has: housing, possesses the communication passage that imports ingress port and outlet port described in the ingress port of main fluid, the outlet port of discharging described main fluid, UNICOM; Pilot valve portion, is arranged on the outlet port side of described communication passage in described enclosure interior; Draught excluder portion, is arranged on the ingress port side of described communication passage in described enclosure interior, wherein,
Described draught excluder portion has:
Driveshaft, one end is connected to barrier film, according to the pressure by the separated pressure chamber of barrier film, moves freely in the axial direction; With
Draught excluder main body, is fixed on described bar and moves axially together with described bar,
According to the axial position of described driveshaft, described draught excluder main body is movable to position, the described communication passage main passage in complete totally enclosed position, described communication passage in of described communication passage in opening completely and stops up but the unplugged position of subaisle.
2. control valve unit according to claim 1, wherein,
In the inside of described housing, the way of the described communication passage from described ingress port to described pilot valve portion, be provided with the main opening portion, formation that form described main passage and compare the secondary opening portion of the described subaisle that opening area is little with described main opening portion,
The inside of described housing is formed with:
The first valve seat, moves to greatest extent vertically draught excluder main body described in the position butt of described ingress port side, thereby described communication passage is sealed completely at described driveshaft,
The second valve seat, moves to draught excluder main body described in the position butt of described pressure chamber side vertically to greatest extent at described driveshaft, thereby the main passage of described main opening portion is stopped up,
In the position of the second valve seat described in described draught excluder main body butt, allow fluid from described ingress port, to flow to described guide portion by the subaisle of described secondary opening portion.
3. control valve unit according to claim 2, wherein, the outside of described main opening portion is formed with described the second valve seat.
4. a secondary air lead-in device, wherein, described secondary air lead-in device has the control valve unit described in any one in claim 1～3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012125182 | 2012-05-31 | ||
| JP2012-125182 | 2012-05-31 | ||
| PCT/JP2013/059055 WO2013179750A1 (en) | 2012-05-31 | 2013-03-27 | Valve device and secondary air introduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104024597A true CN104024597A (en) | 2014-09-03 |
| CN104024597B CN104024597B (en) | 2017-05-17 |
Family
ID=49672958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380004678.0A Active CN104024597B (en) | 2012-05-31 | 2013-03-27 | Valve device and secondary air introduction device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6031101B2 (en) |
| CN (1) | CN104024597B (en) |
| WO (1) | WO2013179750A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56111213U (en) * | 1980-01-28 | 1981-08-28 | ||
| JPS56159610U (en) * | 1980-04-28 | 1981-11-28 | ||
| JPS5717050Y2 (en) * | 1976-07-24 | 1982-04-09 | ||
| JPS58104316A (en) * | 1981-12-16 | 1983-06-21 | Toyota Motor Corp | Secondary air control for internal-combustion engine |
| WO2004061280A1 (en) * | 2002-12-26 | 2004-07-22 | Mikuni Corporation | Diaphragm air valve and secondary air-controlling device for internal combustion engine |
| CN101487410A (en) * | 2009-02-13 | 2009-07-22 | 重庆隆鑫机车有限公司 | Secondary air compensating valve for motor vehicle |
| CN101871378A (en) * | 2009-04-25 | 2010-10-27 | 吴裕农 | Secondary air supplementing device for motorcycle |
| CN103321725A (en) * | 2012-03-23 | 2013-09-25 | 江门市大长江集团有限公司 | Motorcycle secondary air compensating valve |
-
2013
- 2013-03-27 JP JP2014518315A patent/JP6031101B2/en active Active
- 2013-03-27 CN CN201380004678.0A patent/CN104024597B/en active Active
- 2013-03-27 WO PCT/JP2013/059055 patent/WO2013179750A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5717050Y2 (en) * | 1976-07-24 | 1982-04-09 | ||
| JPS56111213U (en) * | 1980-01-28 | 1981-08-28 | ||
| JPS56159610U (en) * | 1980-04-28 | 1981-11-28 | ||
| JPS58104316A (en) * | 1981-12-16 | 1983-06-21 | Toyota Motor Corp | Secondary air control for internal-combustion engine |
| WO2004061280A1 (en) * | 2002-12-26 | 2004-07-22 | Mikuni Corporation | Diaphragm air valve and secondary air-controlling device for internal combustion engine |
| CN101487410A (en) * | 2009-02-13 | 2009-07-22 | 重庆隆鑫机车有限公司 | Secondary air compensating valve for motor vehicle |
| CN101871378A (en) * | 2009-04-25 | 2010-10-27 | 吴裕农 | Secondary air supplementing device for motorcycle |
| CN103321725A (en) * | 2012-03-23 | 2013-09-25 | 江门市大长江集团有限公司 | Motorcycle secondary air compensating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6031101B2 (en) | 2016-11-24 |
| WO2013179750A1 (en) | 2013-12-05 |
| CN104024597B (en) | 2017-05-17 |
| JPWO2013179750A1 (en) | 2016-01-18 |
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