CN1789691B - Waste gas circulating valve - Google Patents
Waste gas circulating valve Download PDFInfo
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- CN1789691B CN1789691B CN2004101007786A CN200410100778A CN1789691B CN 1789691 B CN1789691 B CN 1789691B CN 2004101007786 A CN2004101007786 A CN 2004101007786A CN 200410100778 A CN200410100778 A CN 200410100778A CN 1789691 B CN1789691 B CN 1789691B
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- closure
- waste gas
- space
- gas circulating
- circulating valve
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- Y02T10/121—
Abstract
This invention provides one waste gas recycle valve, which is characterized by the following: the valve comprises one valve to set one space, first and second channels connected to the space, one seal unit located into the space and control line connected to fuel line. The invention uses mechanic structure to control economizer valve to drive control line to drive seal unit to control guide engine waste gas volume and further to decrease engine NOx drainage without affect on engine to improve utility life.
Description
[technical field]
The invention relates to a kind of waste gas circulating valve (EGR Valve), be meant a kind of waste gas circulating valve that moves by throttle line especially.
[background technique]
Pure and fresh with clean air quality is human lives's a basic important document, also is to guarantee one of healthy key element.Yet because China's economic development is rapid, the traffic tool are various, and the pollution that exhausting air caused is very huge to the air quality influence.Atmospheric pollution is serious day by day along with industrial development, and especially in large-scale metropolitan area, the waste gas that means of transportation discharged makes health of people suffer utmost point serious harm.This is main air pollutant source with vehicle again wherein.Under environmental consciousness came back, the atmospheric pollution that automotive exhaust gas caused had become the problem of very urgent solution.
Consult Fig. 1, the known Exhaust gas recirculation device 1 that is used for automobile is to be connected with the engine 100 of automobile, to reduce the production of NOx waste gas.
Waste gas circulating valve 11, the one control waste gas circulating valves 11 that Exhaust gas recirculation device 1 comprises an electromagnetic valve type open and close the electronic control line (ECU) 12 of start, first air pipe 13 of a connection outlet pipe 300, and second air pipe 14 that is communicated with suction tude 200.
When 11 starts of electronic control line (ECU) 12 control waste gas circulating valves are opened, first air pipe 13 is communicated with second air pipe 14, part waste gas in the engine 100 just can enter first air pipe 13 by outlet pipe 300 earlier, then, enter second air pipe 14 by first air pipe 13, enter suction tude 200 at last again, an amount of waste gas is sent in the car engine 100 with after fresh air mixes again.
Relatively, when electronic control line (ECU) 12 control waste gas circulating valves 11 are closed, be not interconnected between first air pipe 13 and second air pipe 14.So the waste gas in the engine 100 just can't enter in the suction tude 200 via first and second air pipe 13,14 at this moment, and is directly arranged from engine 100 by outlet pipe 300.
Because in 100 exhaust gas discharged of engine, the waste gas of some reenters suction tude 200 and mixes with fresh air, enter in the engine again and burn, and contain in this waste gas in a large number can not be combustion-supporting inert gas (as carbon dioxide), oxidation can not take place, but can absorb a large amount of heat, therefore when burning, the reduction of maximum temperature in the time of can suppressing engine 100 starts, and then the production of minimizing nitrogen oxides of exhaust gas (NOx).
But the above-mentioned Exhaust gas recirculation device 1 that is installed on the automobile is because the exhaust gas temperature of outlet pipe 300 is too high, make waste gas circulating valve 11 starts of Exhaust gas recirculation device 1 of electromagnetic type bad easily, even stop start, thus, just lost the meaning of installing Exhaust gas recirculation device 1.
Consult Fig. 2, another known Exhaust gas recirculation device 2, then adopt the mode start of negative pressure control, it comprises a waste gas circulating valve 3 that is communicated with suction tude 500 and the discharging passage 601 of outlet pipe respectively, and a TCU transfer control unit 4 that is communicated with waste gas circulating valve 3 and suction tude 500 respectively.
Waste gas circulating valve 3 has a valve body 31, a closure member 32, and the diaphragm block 33 of a may command closure member 32 starts.
Valve body 31 defines a start space 311, a connecting tube 312 that is connected with start space 311, and a waste gas runner 313, the waste gas that waste gas runner 313 imports from the discharging passage 601 that is communicated with outlet pipe.
Closure member 32 can be driven by diaphragm block 33 starts, with sealing/unlatching waste gas runner 313.
Diaphragm block 33 is arranged in the start space 311, comprise one and slippingly this start separated by spaces is become two-part diaphragm 331, one and the elastic recovery part 332 that is connected of diaphragm 331 (in this illustration shows be example explanation with a spring), and a connecting rod 333 that links diaphragm 331 and closure member 32 respectively.
TCU transfer control unit 4 comprises one and is communicated with the connecting tube 312 of valve body 31 and the negative pressure pipe 41 of the suction tude 500 of engine respectively, and a pressure adjusting transducer 42 that is arranged on the negative pressure pipe 41, and it is the negative pressure that can regulate the compensation intake duct that pressure is regulated transducer.
When throttle valve 700 apertures become big or diminish, the negative pressure of suction tude 500 also produces the variation of size, regulate transducer 42 compensation negative pressure by pressure this moment, and make the restoring force of the negative pressure of suction tude 500 greater than elastic recovery part 332, and make the diaphragm 331 slip bands bar 333 that is dynamically connected, and then drive closure member 32 to top offset, the row of making enters in the suction tude 500 via discharging passage 601, waste gas runner 313 from the waste gas of engine, and, send in the engine again with after fresh air mixes.
Owing to be installed in the engine periphery of extreme temperatures with the waste gas circulating valve 3 of the Exhaust gas recirculation device 2 of negative pressure control mode start, therefore, diaphragm 331 is easily because of high temperature damages, and makes not to be inconsistent user demand in working life of Exhaust gas recirculation device 2; Also because the working environment of the waste gas circulating valve 3 of negative pressure type is the working environment that belongs to high temperature, and must select resistant to elevated temperatures material preparation for use, also therefore increase manufacturing cost.
In addition, regulate the negative pressure that transducer 42 is regulated compensation suction tude 500,, thereby cause the increase of required part and manufacture cost with cooperation engine start demand owing to must additionally install working pressure additional between the negative pressure of suction tude 500 and the diaphragm block 33.
[summary of the invention]
Therefore, purpose of the present invention promptly provides a kind of waste gas circulating valve, links the mechanically controlled type start that control drives by throttle line, imports with the predetermined waste gas of the control of timely and appropriate discovery to cooperate the engine start in the engine, to reduce the Nox waste gas of discharging.
So, the invention provides a kind of waste gas circulating valve, it is characterized in that: this waste gas circulating valve has a valve body, and this valve body defines one and space, is set is communicated with this first flow in space is set, and is communicated with second runner that this is provided with the space with one; And a closed cell, be arranged on this movably and be provided with in the space, and the guide line of this closed cell connection one and throttle line binding.
Described waste gas circulating valve is characterized in that: this is provided with the space and comprises a holding part, from the upwardly extending portion that is provided with of this holding part end face, and a closure of extending downwards from this holding part bottom surface.
Described waste gas circulating valve is characterized in that: this first flow is connected with this closure bottom surface that this is provided with the space, and this second runner is connected with this holding part side that this is provided with the space.
Described waste gas circulating valve is characterized in that: this closure is apered to taper downwards from this holding part bottom surface.
Described waste gas circulating valve is characterized in that: this closed cell comprises a slider, a closure member that is provided with from this slider bottom downwards, and an elastic recovery part that links with this slider.
Described waste gas circulating valve, it is characterized in that: this closure member comprises first closure, second closure from this more downward extension in first closure bottom surface that is connected with this slider, and the 3rd closure from this more downward extension in second closure bottom surface, the gradually downward convergent of outer this first closure without leave of this second closure, the gradually downward convergent of outer this second closure without leave of the 3rd closure, the conflict open communication of this containing space and this first flow of this second closure side face is not connected so that this first flow is provided with the space with this.
Described waste gas circulating valve is characterized in that: the 3rd closure is apered to taper downwards from this second closure bottom surface.
Described waste gas circulating valve is characterized in that: this elastic recovery part is a spring.
Described waste gas circulating valve is characterized in that: this guide line is a steel wire, the synchronous interlock of this guide line and throttle line.
Described waste gas circulating valve is characterized in that: when this guide line was not spurred by throttle line, the restoring force of this this elastic recovery part of closed cell mat made this closed cell return back to this first flow of sealing.
The effect of waste gas circulating valve of the present invention is that linking control by throttle line drives guide line, and then drive closed cell, and the control of timely and appropriate discovery imports the waste gas of engine, and then the production of minimizing engine NOx waste gas, simultaneously, be not subjected to the influence of engine emissions high exhaust temperatures yet, and can improve working life, keep normal start.
[description of drawings]
Fig. 1 is a sectional view, and the known Exhaust gas recirculation device that is used for car engine is described;
Fig. 2 is a sectional view, and the Exhaust gas recirculation device of known negative pressure control mode is described;
Fig. 3 is a sectional view, and a preferred embodiment of waste gas circulating valve of the present invention is described, and explanation waste gas circulation valve position is at the state of a closing position; And
Fig. 4 is a sectional view, and the waste gas circulation valve position of schematic representation 3 is at the state of a connection position.
[embodiment]
About addressing other technologies content, characteristics and effect before the present invention, in the following detailed description that cooperates with reference to one of a graphic preferred embodiment, can clearly present.
Before the present invention is described in detail, be noted that in the following description content similar elements is to represent with identical numbering.
Consult Fig. 3, Fig. 4, one preferred embodiment of waste gas circulating valve 5 of the present invention, present embodiment to be describing on the engine (scheming not shown) that is used for handle type vehicle, and then reduces the production of the NOx waste gas of engine start discharging, and minimizing causes the air-polluting pollution sources.
To known similar, suction tude 500, outlet pipe (not shown), a discharging passage 601 that is connected with this outlet pipe for the toxic emission that produces after the oil inflame effect that can provide fresh air to enter is provided the engine of handle type vehicles such as locomotive, and one be arranged in the suction tude 500 control air inlet throttle valve 700, throttle valve 700 mats and handle 800 rotate the throttle line 900 regulating and controlling apertures of control, and then control the air quantity that enters engine from suction tude 500.
Waste gas circulating valve 5 comprises a valve body 6, a closed cell 7, and a guide line 8.
Valve body 6 slightly becomes tubular, and define one space 61, a first flow 62 are set, and one second runner 63.Holding part 611, that space 61 comprises one one-tenth circular hole shape is set from the upwardly extending portion 612 that is provided with of holding part 611 end faces, and the closure 613 of a downward extension from holding part 611 bottom surfaces, portion 612 is set also is the circular hole shape, and the diameter of axle of holding part 611 is greater than the diameter of axle that portion 612 is set, and the diameter of axle of closure 613 is from holding part 611 convergent and tapered downwards gradually.First flow 62 two opposite openings are communicated with suction tude 500 and the bottom surface that the closure 613 in space 61 is set respectively, and second runner, 63 two opposite openings are communicated with the discharging passage 601 and the side that the holding part 611 in space 61 is set of outlet pipe respectively.
Closed cell 7 is arranged on movably and is provided with in the space 61, comprises the closure member 72 that a slider 71, is provided with from slider 71 bottoms downwards, and an elastic recovery part 73 that links with slider 71.
Closure member 72 comprises that one is provided with first closure 721, second closure 722 from the first closure more downward extension in 721 bottom surfaces of binding downwards from slider 71 bottom surfaces, and the 3rd closure 723 from the second closure more downward extension in 722 bottom surfaces, second closure 722 gradually shortens taper downwards into from first closure, 721 bottom surfaces, and the 3rd closure 723 gradually shortens taper downwards into from second closure, 722 bottom surfaces.
Guide line 8 is steel wires that are connected with throttle line 900, in contrast to holding the perforation 712 of passing elastic recovery part 73, slider 71 with one of throttle line 900 bindings, and be installed with adjustably in containing groove 711, and make when rotatory handling 800 drives the aperture of throttle line 900 control throttle valve 700, guide line 8 can be driven start synchronously because of linking with throttle line 900, and then drive closed cell 7 moves around between a closing position and a connection position.
As shown in Figure 3, when handle 800 does not rotate drive throttle line 900 and guide line 8 starts, closed cell 7 is positioned at closing position, the side face of second closure 722 of closure member 72 contacts at the open communication of establishing containing space 61 and first flow 62, make first flow 62 with space 61 be set be not connected, at this moment, waste gas can't be via second runner 63, the holding part 611 that space 61 is set, first flow 62 by discharging passage 601, and enters in the suction tude 500.
As shown in Figure 4, when rotatory handling 800 when driving throttle line 900 and then driving guide line 8 starts, closed cell 71 drives self-enclosed position gradually to being communicated with position displacement by guide line 8, slider 71 gradually moves up and pressure elasticity answer part 73, simultaneously, the open communication of containing space 61 and first flow 62 communicates because of the moving of second closure 722 of closure member 72, at this moment, waste gas self-discharging road 601 is via second runner 63, the holding part 611 that space 61 is set, first flow 62, and enter suction tude 500, be mixed in the engine with fresh air again; Simultaneously, can regulate and control the amount that waste gas enters first flow 62 from holding part 611, and then enter in the engine, owing to contain a large amount of carbon dioxide (CO in the waste gas that enters once more with the waste gas and the fresh air of optimum mixture ratio example by the 3rd closure 723
2) inert gas, can suppress the interior oxygen concentration of engine and lower, rise on the control combustion temperature, the maximum temperature when making this engine combustion reduces, so can reduce the production of nitrogen oxides of exhaust gas (NOx).
As shown in Figure 3, when handle 800 returned back to the home position of not rotation, closed cell 7 promoted slider 71 by the elastic-restoring force of elastic recovery part 73, and then drove closed cell 7 and return back to closing position, with sealing first flow 62.
As shown in the above description, waste gas circulating valve 5 of the present invention is to utilize mechanical structure, rotate control with handle 800 and can regulate throttle line 900 starts of throttle valve 700 apertures, and the guide line 8 that synchronization control and throttle line 900 link, and then drive closed cell 7 opens and closes first flows 62, and the control of timely and appropriate discovery imports the exhausted air quantity of engine, and then the production of minimizing engine NOx waste gas, simultaneously, waste gas circulating valve 5 more is not subjected to the influence of engine emissions high exhaust temperatures yet, and can improve working life, keep normal start, really improve the known waste gas circulating valve 11 that is installed in the electromagnetic type of the Exhaust gas recirculation device 1 on the automobile, easily too high because of the exhaust gas discharged temperature, and it is bad to cause start, even stop the shortcoming of start, and the Exhaust gas recirculation device 2 of negative pressure control mode start, its waste gas circulating valve 3 is because of being installed in the engine periphery of extreme temperatures, remove and to use the high temperature resistant material making of costliness, also easily make diaphragm 331 because of high temperature damages, and make and be not inconsistent the shortcoming of user demand the working life of Exhaust gas recirculation device 2.
In sum, pure and fresh with clean air quality is human lives's a basic important document, also is to guarantee one of healthy key element.Waste gas circulating valve 5 of the present invention, by mechanical structure, with throttle line 900 control start guide lines 8, and then drive closed cell 7 to control the exhausted air quantity that is mixed into engine timely and appropriately, therefore can effectively reduce the production of the nitrogen oxide (NOx) in the discharging waste gas, reduce and cause the air-polluting pollution sources, can reach the present invention's purpose really.
But the above only is the present invention's preferred embodiment, and is promptly all according to simple equivalent variation and modification that the present invention did when not limiting protection scope of the present invention with this, all still belongs within the protection domain of the present invention.
Claims (8)
1. waste gas circulating valve, it is characterized in that: this waste gas circulating valve has
One valve body, this valve body define one and space, is set is communicated with this first flow in space is set, and are communicated with second runner that this is provided with the space with one; And
One closed cell, being arranged on this movably is provided with in the space, this is provided with the space and comprises a holding part, from this upwardly extending portion that is provided with of holding part item face, and the closure of a downward extension from this holding part bottom surface, and the guide line that this closed cell connection one and throttle line link, this guide line is a steel wire, the synchronous interlock of this guide line and throttle line.
2. waste gas circulating valve according to claim 1 is characterized in that: this first flow is connected with this closure bottom surface that this is provided with the space, and this second runner is connected with this holding part side that this is provided with the space.
3. waste gas circulating valve according to claim 1 is characterized in that: this closure is apered to taper downwards from this holding part bottom surface.
4. waste gas circulating valve according to claim 1 is characterized in that: this closed cell comprises a slider, a closure member that is provided with from this slider bottom downwards, and an elastic recovery part that links with this slider.
5. waste gas circulating valve according to claim 4, it is characterized in that: this closure member comprises first closure that is connected with this slider, one second closure from this more downward extension in first closure bottom surface, and the 3rd closure from this more downward extension in second closure bottom surface, the gradually downward convergent of outer this first closure without leave of this second closure, the gradually downward convergent of outer this second closure without leave of the 3rd closure, the conflict open communication of this containing space and this first flow of this second closure side face is not connected so that this first flow is provided with the space with this.
6. waste gas circulating valve according to claim 5 is characterized in that: the 3rd closure is apered to taper downwards from this second closure bottom surface.
7. waste gas circulating valve according to claim 4 is characterized in that: this elastic recovery part is a spring.
8. waste gas circulating valve according to claim 4 is characterized in that: when this guide line was not spurred by throttle line, the restoring force of this this elastic recovery part of closed cell mat made this closed cell return back to this first flow of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004101007786A CN1789691B (en) | 2004-12-14 | 2004-12-14 | Waste gas circulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2004101007786A CN1789691B (en) | 2004-12-14 | 2004-12-14 | Waste gas circulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1789691A CN1789691A (en) | 2006-06-21 |
| CN1789691B true CN1789691B (en) | 2010-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004101007786A Expired - Fee Related CN1789691B (en) | 2004-12-14 | 2004-12-14 | Waste gas circulating valve |
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| Country | Link |
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| CN (1) | CN1789691B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009149868A1 (en) * | 2008-06-12 | 2009-12-17 | Perkins Engines Company Limited | Exhaust gas mixing system |
| CN107061065B (en) * | 2017-04-28 | 2018-02-06 | 吉林大学 | Micro- pressurised exhaust gas circulating valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2644688Y (en) * | 2003-09-10 | 2004-09-29 | 黄显华 | Negative pressure type position feedback pattern exhaust gas recirculation valve |
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2004
- 2004-12-14 CN CN2004101007786A patent/CN1789691B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2644688Y (en) * | 2003-09-10 | 2004-09-29 | 黄显华 | Negative pressure type position feedback pattern exhaust gas recirculation valve |
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| CN1789691A (en) | 2006-06-21 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20100428 Termination date: 20111214 |