CN107559454A - Triple valve and vehicle for D egr systems - Google Patents
Triple valve and vehicle for D egr systems Download PDFInfo
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- CN107559454A CN107559454A CN201610503629.7A CN201610503629A CN107559454A CN 107559454 A CN107559454 A CN 107559454A CN 201610503629 A CN201610503629 A CN 201610503629A CN 107559454 A CN107559454 A CN 107559454A
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- switching device
- row stomata
- triple valve
- air admission
- admission hole
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Abstract
The invention provides a kind of triple valve and vehicle for D egr systems, triple valve includes：Valve body, valve body have air admission hole, first row stomata and second row stomata, and air admission hole connects with the exhaust outlet of any one cylinder in engine, and first row stomata connects with gas handling system, and second row stomata connects with gas extraction system；Switching device, switching device are arranged in valve body；Drive device, drive device are arranged for driving switching device around pivotal axis to turn on air admission hole and first row stomata or air admission hole and second row stomata, and pivot axis is located at the center of switching device.So in engine cold-start, switching device can turn on air admission hole and second row stomata, so that the waste gas in in-engine multiple cylinders all flows to catalyst converter, catalyst converter can be caused to be rapidly achieved operating temperature, and then the discharge of pernicious gas can be reduced, the environmental-protecting performance of vehicle can be improved.
Description
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of triple valve for D-EGR systems and with this three
The vehicle of port valve.
Background technology
D-EGR (waste gas recycling special Dedicated Exhaust Gas Recirculation-) research and development are contemplated
Come from South West USA research institute, it is contemplated that only participated in single cylinder in exhaust gas recirculation event, waste gas is reduced again with this
The excess energy expended in cyclic process.In engine operation process, the waste gas in only one cylinder enters in EGR line,
Participated in behind combustion chamber in exhaust cycle, that is to say, that this system will provide 25% constant ER EGR Rate
(abbreviation EGR rate).Due to that can maintain than relatively high and stable EGR rate, engine can be carried out surely under higher compression
Fixed work, so D-EGR can improve Fuel Economy while discharge is reduced.
But D-EGR have one it is obvious the shortcomings that, exactly discharged in cold start-up it is very poor, main cause be exhausted air quantity reduce
25%, catalyst converter can not reach operating temperature in a short time, and the waste gas without catalysis is exhausted directly in air, so causing to arrange
Put poor.How to improve cold start emission is the problem that D-EGR engines must solve.
The content of the invention
In view of this, the present invention is directed to propose a kind of triple valve for D-EGR systems, during solving engine cold-start
Discharge the problem of poor.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of triple valve for D-EGR systems, the vehicle includes engine, gas handling system and gas extraction system, described
Triple valve includes：Valve body, the valve body have air admission hole, first row stomata and second row stomata, the air admission hole and the hair
The exhaust outlet connection of any one cylinder in motivation, the first row stomata connect with the gas handling system, the second row
Stomata connects with the gas extraction system；Switching device, the switching device are arranged in the valve body；Drive device, the drive
Dynamic device is arranged for driving the switching device around pivotal axis to turn on the air admission hole and the first exhaust
Hole or the air admission hole and the second row stomata, the pivot axis are located at the center of the switching device.
Further, the valve body, the switching device are made by stainless steel alloy material.
Further, the drive device includes：Actuator, the actuator are arranged on the valve body；Driving link, institute
Driving link is stated with the actuator to be connected；Pivotal axis, the pivotal axis are connected with the driving link, and the switching device is arranged on
On the pivotal axis, the pivotal axis is suitable to the driving link synchronous axial system.
Further, the switching means configuration is valve block, and the pivotal axis is located at the center of the valve block.
Further, the bearing of trend of the bearing of trend of the pivotal axis and the valve block is perpendicular.
Further, at least there is a plane clearance between the valve block and the pivotal axis, the plane clearance
Size is less than 0.15mm.
Further, the maximum angle that the switching device rotates is between 50 ° -70 °.
Further, the triple valve also includes：Stopper slot, the end of the switching device stretch into the stopper slot and
The switching device is suitable to turn on the air admission hole and the first row stomata when turning to the first end of the stopper slot, with
And suitable for turning on the air admission hole and the second row stomata when turning to the second end of the stopper slot.
Further, the stopper slot is two and the both ends of the switching device are respectively protruding into two stopper slots
Interior, one of them described stopper slot is oppositely arranged with the air admission hole.
Relative to prior art, the triple valve of the present invention for D-EGR systems has the advantage that：
According to the triple valve for D-EGR systems of the present invention, the triple valve can turn on any one gas of engine
The exhaust outlet and gas handling system of cylinder or turn on engine any one cylinder exhaust outlet and gas extraction system, so as to so that
The catalyst converter that waste gas of the vehicle in cold start-up operating mode in cylinder all flows to gas extraction system is obtained, catalyst converter can quickly be reached
To operating temperature, and then the discharge of pernicious gas can be reduced, the environmental-protecting performance of vehicle can be improved, and in the normal row of vehicle
During sailing, combustion chambers burn that the waste gas in a cylinder can be entered back into each cylinder by gas handling system, so as to
The amount of nitrogen oxides in waste gas can be reduced, the environmental-protecting performance and fuel economy of vehicle can be improved.
Another object of the present invention is to propose a kind of vehicle.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of vehicle, including above-mentioned triple valve.
Relative to prior art, vehicle of the present invention has the advantage that：
Vehicle according to the invention, including the above-mentioned triple valve for D-EGR systems, due to being used for D- with above-mentioned
The triple valve of egr system, vehicle noxious gas emission in cold start-up is few, and in normal work, discharged nitrous oxides are few, so as to
Environmental-protecting performance and fuel economy can be lifted.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a stereogram of the triple valve for D-EGR systems described in the embodiment of the present invention；
Fig. 2 is another stereogram of the triple valve for D-EGR systems described in the embodiment of the present invention；
Fig. 3 is the sectional view of the triple valve for D-EGR systems described in the embodiment of the present invention；
Fig. 4 is the enlarged drawing of region A in Fig. 3.
Description of reference numerals：
Triple valve 100；
Valve body 10；Air admission hole a；First row stomata b；Second row stomata c；
Switching device 20；Drive device 30；Actuator 31；Driving link 32；Pivotal axis 33；Stopper slot 40.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the triple valve 100 of the embodiment of the present invention, the triple valve in detail below with reference to the accompanying drawings and in conjunction with the embodiments
100 can apply in the D-EGR systems of vehicle, for example, vehicle includes engine, gas handling system and gas extraction system, triple valve
100 are connected between engine, gas handling system and gas extraction system, so as to control gas flow.
As shown in figure 3, the triple valve 100 for D-EGR systems according to embodiments of the present invention can include：Valve body 10,
Switching device 20 and drive device 30, valve body 10 have air admission hole a, first row stomata b and second row stomata c, air admission hole a and hair
The exhaust outlet connection of any one cylinder in motivation, first row stomata b connect with gas handling system, second row stomata c and exhaust
System connectivity.Wherein, engine can include multiple cylinders, exhaust outlets of the air admission hole a only with a cylinder in multiple cylinders
Connection, it is preferable that the cylinder is located at the side of other cylinders, and so waste gas of other cylinders can be flowed to by exhaust manifold and arranged
The catalyst converter of gas system, after the catalyst effect in catalyst converter, waste gas is discharged into air, and the row in the cylinder
Gas port connects with the air admission hole a of triple valve 100, and so the waste gas of the cylinder can select to arrange to air inlet by first row stomata b
System is arranged into the catalyst converter of gas extraction system by second row stomata c.
As shown in figure 3, switching device 20 is arranged in valve body 10, wherein, valve body 10 can include main body and lid, lid
The both sides of sealed body, lid can be placed in valve body 10 rear sealed body in switching device 20.Drive device 30 is arranged to
For driving switching device 20 around pivotal axis to turn on air admission hole a and first row stomata b or air admission hole a and second exhaust
Hole c, pivot axis are located at the center of switching device 20.It is understood that drive device 30 can drive 20 turns of switching device
Dynamic, switching device 20 can seal second row stomata c, and now switching device 20 can turn on air admission hole a and first row stomata b,
The waste gas in cylinder entered from air admission hole a can be arranged into the pipeline of gas handling system by first row stomata b, and the waste gas
The burning of combustion chamber is participated in being entered after other gas mixings in each cylinder, the switch mode is going for vehicle just
Often traveling process, the nitrogen oxides in the waste gas of such vehicle discharge significantly reduces, so as to improve the environmental-protecting performance of vehicle
And fuel economy.
Switching device 20 can seal first row stomata b, and now switching device 20 can turn on air admission hole a and second exhaust
Hole c, the waste gas out of air admission hole a air inlets cylinder can be arranged into the catalyst converter of gas extraction system by second row stomata c, and this is cut
Mold changing formula goes for vehicle cold-start operating mode, and the waste gas in so multiple cylinders is all arranged to catalyst converter, so as to so that
Obtain catalyst converter and be rapidly achieved operating temperature, the discharge of pernicious gas can be avoided, the environmental-protecting performance of vehicle can be improved.
Wherein, it is located at due to pivot axis at the center of switching device 20, so the power that switching device 20 is required when rotating
Square is smaller, so can largely reduce the burden of drive device 30, can improve the reliability of drive device 30.
As depicted in figs. 1 and 2, drive device 30 can include：Actuator 31, driving link 32 and pivotal axis 33, actuator
31 are arranged on valve body 10, and specifically, valve body 10 can be provided with support, and actuator 31 is directly installed on support, support one
Aspect can reduce valve body 10 and transmit temperature to actuator 31, can make it that the operating temperature of actuator 31 is suitable, the opposing party
Face can improve installation reliability of the actuator 31 on valve body 10.Driving link 32 is connected with actuator 31, wherein, actuator 31
Can be pneumatic actuator, driving link 32 can be initiatively rocking arm, and pneumatic actuator can drive initiatively rocking arm to rotate, pivotal axis
33 are connected with driving link 32, and switching device 20 is arranged on pivotal axis 33, and pivotal axis 33 is suitable to the synchronous axial system of driving link 32.Can
With understanding, one end of pivotal axis 33 is connected on initiatively rocking arm, and so when initiatively rocking arm rotates, pivotal axis 33 can be with
Initiatively rocking arm synchronous axial system, and switching device 20 is arranged on pivotal axis 33, so as to which switching device 20 can be with pivotal axis 33
Synchronous axial system, and then allow switching device 20 to turn on air admission hole a and first row stomata b or air admission hole a and second exhaust
Hole c.Wherein, pivot axis is located at the center of pivotal axis 33, and pivotal axis 33 is located at the center of switching device 20.Such as Fig. 3 institutes
Show, switching device 20 is it is so structured that valve block, pivotal axis 33 are located at the center of valve block.Valve structure is simple, and thickness is smaller,
So as to be easy to it to be rotated with pivotal axis 33, the flexibility of the switching of triple valve 100 can be improved.
Alternatively, as shown in figure 4, the bearing of trend of pivotal axis 33 and the bearing of trend of valve block are perpendicular.Specifically, pivot
Axle 33 can be with elongated, the bearing of trend for extending perpendicularly to valve block of the pivotal axis 33 of the strip, such pivotal axis
33 can be preferably with moving valve plate synchronous axial system, so as to improve the structural reliability of triple valve 100.As shown in figure 4, valve block
Can at least have a plane clearance between pivotal axis 33, the size of plane clearance is less than 0.15mm.Meet above-mentioned size
Coordinate between the valve block and pivotal axis 33 of relation reliably, so that the reliable operation of triple valve 100.
Alternatively, the maximum angle α that switching device 20 rotates can be between 50 ° -70 °.Preferably, 20 turns of switching device
Dynamic maximum angle α is 60 °.The maximum angle α rotated by rationally limiting switching device 20, can cause initiatively rocking arm and pivot
The rotational angle of rotating shaft 33 is suitable, and switching device 20 can be caused to switch rapidly, so that the reliable operation of triple valve 100,
And then the performance of triple valve 100 can be lifted.
According to the specific embodiment of the present invention, as shown in figure 3, triple valve 100 can also include：Stopper slot 40, cuts
The end of changing device 20 is stretched into stopper slot 40, and switching device 20 is suitable to turn on when turning to the first end of stopper slot 40
Air admission hole a and first row stomata b, and suitable for turning on air admission hole a and second exhaust when turning to the second end of stopper slot 40
Hole c.When switching device 20 is clockwise to the first end of stopper slot 40, the switching device 20 that stopper slot 40 prevents continues to turn
It is dynamic, and from the pressure of the air admission hole a waste gas entered switching device 20 can be forced to be maintained at the first end of stopper slot 40, when
When switching device 20 is rotated counterclockwise to the second end of stopper slot 40, stopper slot 40 can prevent switching device 20 from being rotated further,
And from the pressure of the air admission hole a waste gas entered switching device 20 can be forced to be maintained at the second end of stopper slot 40.And
The maximum angle that above-mentioned switching device 20 rotates can be according to the center of circle angle setting corresponding to stopper slot 40.
As shown in figure 3, being arranged on due to pivotal axis 33 at the center of switching device 20, switching device 20 has two ends
Portion, so stopper slot 40 can be two, and the both ends of switching device 20 are respectively protruding into two stopper slots 40, one of them
Stopper slot 40 is oppositely arranged with air admission hole a.Wherein, the center of circle angle corresponding to stopper slot 40 is more than the center of circle corresponding to air admission hole a
Angle, such stopper slot 40 can cover air admission hole a, so that the reliable operation in the course of the work of switching device 20,
The functional reliability of triple valve 100 can be improved.
In addition, it is necessary to explanation, triple valve 100 can be mounted directly on the engine, because EGT is higher, bavin
The EGT of oil machine is close to 800 DEG C, and the EGT of gasoline engine is close to 1000 DEG C, therefore triple valve 100 is required to bear height
Temperature, valve body 10, switching device 20 can be made by resistant to elevated temperatures stainless steel alloy material.
Triple valve 100 for D-EGR systems according to embodiments of the present invention, the triple valve 100 can turn on engine
Any one cylinder exhaust outlet and gas handling system or turn on engine any one cylinder exhaust outlet and exhaust system
System, so that waste gas of the vehicle in cold start-up operating mode in cylinder all flows to the catalyst converter of gas extraction system, can make
Obtain catalyst converter and be rapidly achieved operating temperature, and then the discharge of pernicious gas can be reduced, the environmental-protecting performance of vehicle can be improved, and
And during normal vehicle operation, combustion that the waste gas in a cylinder can be entered back into each cylinder by gas handling system
Room burning is burnt, so as to reduce the amount of nitrogen oxides in waste gas, the environmental-protecting performance and fuel-economy of vehicle can be improved
Property.
Vehicle according to embodiments of the present invention, include the triple valve 100 for D-EGR systems of above-described embodiment, due to
The triple valve 100 for D-EGR systems with above-described embodiment, vehicle noxious gas emission in cold start-up is few, normal
Discharged nitrous oxides are few during work, so as to lift environmental-protecting performance and fuel economy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (10)
- A kind of 1. triple valve (100) for D-EGR systems, it is characterised in that the vehicle include engine, gas handling system and Gas extraction system, the triple valve (100) include：Valve body (10), the valve body (10) have air admission hole (a), first row stomata (b) and second row stomata (c), the air inlet Hole (a) connects with the exhaust outlet of any one cylinder in the engine, the first row stomata (b) and the gas handling system Connection, the second row stomata (c) connect with the gas extraction system；Switching device (20), the switching device (20) are arranged in the valve body (10)；Drive device (30), the drive device (30) are arranged for driving the switching device (20) around pivotal axis It is described to turn on the air admission hole (a) and the first row stomata (b) or the air admission hole (a) and the second row stomata (c) Pivot axis is located at the center of the switching device (20).
- 2. the triple valve (100) according to claim 1 for D-EGR systems, it is characterised in that the valve body (10), The switching device (20) is made by stainless steel alloy material.
- 3. the triple valve (100) according to claim 1 for D-EGR systems, it is characterised in that the drive device (30) include：Actuator (31), the actuator (31) are arranged on the valve body (10)；Driving link (32), the driving link (32) are connected with the actuator (31)；Pivotal axis (33), the pivotal axis (33) are connected with the driving link (32), and the switching device (20) is arranged on described On pivotal axis (33), the pivotal axis (33) is suitable to the driving link (32) synchronous axial system.
- 4. the triple valve (100) according to claim 3 for D-EGR systems, it is characterised in that the switching device (20) valve block is configured to, the pivotal axis (33) is located at the center of the valve block.
- 5. the triple valve (100) according to claim 4 for D-EGR systems, it is characterised in that the pivotal axis (33) Bearing of trend and the valve block bearing of trend it is perpendicular.
- 6. the triple valve (100) according to claim 4 for D-EGR systems, it is characterised in that the valve block with it is described At least there is a plane clearance, the size of the plane clearance is less than 0.15mm between pivotal axis (33).
- 7. the triple valve (100) according to claim 1 for D-EGR systems, it is characterised in that the switching device (20) maximum angle rotated is between 50 ° -70 °.
- 8. the triple valve (100) according to claim 1 for D-EGR systems, it is characterised in that also include：Stopper slot (40), the end of the switching device (20) is stretched into the stopper slot (40) and the switching device (20) is suitable to turning to The air admission hole (a) and the first row stomata (b) are turned on during the first end of the stopper slot (40), and suitable for turning to The air admission hole (a) and the second row stomata (c) are turned on during the second end of the stopper slot (40).
- 9. the triple valve (100) according to claim 8 for D-EGR systems, it is characterised in that the stopper slot (40) It is respectively protruding into for the both ends of two and the switching device (20) in two stopper slots (40), one of them described stopper slot (40) it is oppositely arranged with the air admission hole (a).
- 10. a kind of vehicle, it is characterised in that including three for D-EGR systems according to any one of claim 1-9 Port valve (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503629.7A CN107559454A (en) | 2016-06-30 | 2016-06-30 | Triple valve and vehicle for D egr systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503629.7A CN107559454A (en) | 2016-06-30 | 2016-06-30 | Triple valve and vehicle for D egr systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107559454A true CN107559454A (en) | 2018-01-09 |
Family
ID=60969383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610503629.7A Pending CN107559454A (en) | 2016-06-30 | 2016-06-30 | Triple valve and vehicle for D egr systems |
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| Country | Link |
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| CN (1) | CN107559454A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115919A (en) * | 2005-02-07 | 2008-01-30 | 博格华纳公司 | Exhaust throttle-egr valve module for a diesel engine |
| CN102089512A (en) * | 2008-10-09 | 2011-06-08 | 三菱电机株式会社 | EGR valve device |
| US20130167812A1 (en) * | 2010-12-13 | 2013-07-04 | Mitsubishi Electric Corporation | Exhaust gas recirculation valve |
| CN104864117A (en) * | 2014-02-24 | 2015-08-26 | 博格华纳埃斯林根有限公司 | Exhaust gate |
| CN104884764A (en) * | 2012-06-28 | 2015-09-02 | 康明斯有限公司 | Techniques for controlling a dedicated egr engine |
| CN105526017A (en) * | 2014-10-14 | 2016-04-27 | 福特环球技术公司 | Systems and methods for transient control |
-
2016
- 2016-06-30 CN CN201610503629.7A patent/CN107559454A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115919A (en) * | 2005-02-07 | 2008-01-30 | 博格华纳公司 | Exhaust throttle-egr valve module for a diesel engine |
| CN102089512A (en) * | 2008-10-09 | 2011-06-08 | 三菱电机株式会社 | EGR valve device |
| US20130167812A1 (en) * | 2010-12-13 | 2013-07-04 | Mitsubishi Electric Corporation | Exhaust gas recirculation valve |
| CN104884764A (en) * | 2012-06-28 | 2015-09-02 | 康明斯有限公司 | Techniques for controlling a dedicated egr engine |
| CN104864117A (en) * | 2014-02-24 | 2015-08-26 | 博格华纳埃斯林根有限公司 | Exhaust gate |
| CN105526017A (en) * | 2014-10-14 | 2016-04-27 | 福特环球技术公司 | Systems and methods for transient control |
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Application publication date: 20180109 |
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