CN205532933U - EGR system and waste gas drive arrangement thereof - Google Patents
EGR system and waste gas drive arrangement thereof Download PDFInfo
- Publication number
- CN205532933U CN205532933U CN201620083491.5U CN201620083491U CN205532933U CN 205532933 U CN205532933 U CN 205532933U CN 201620083491 U CN201620083491 U CN 201620083491U CN 205532933 U CN205532933 U CN 205532933U
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- tracheae
- flue gas
- exhaust gas
- leading
- driven device
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Abstract
The utility model discloses a waste gas drive arrangement for drive waste gas is got into the air intake manifold of engine by the EGR valve, including plug bush complex flue gas leading, first trachea and second trachea, one in first trachea and the second trachea overlap outside the flue gas leading, one insert in the flue gas leading, first trachea water conservancy diversion air admission air intake manifold, EGR valve install the head -end in the flue gas leading, and first tracheal gas outlet, the gas outlet of flue gas leading, the tracheal gas outlet of second communicate simultaneously, installation impeller in the flue gas leading, and installation turbine in the first trachea, air flow drive turbine drives rotating impeller, annular opening is seted up to first tracheal lateral wall, the annular partition dish of annular opening erection joint impeller and turbine, annular partition dish with first tracheal lateral wall sealed and rotation is connected. Through the device pressure boost waste gas to make its automatic smooth entering air intake manifold. The utility model also discloses a EGR system of including this waste gas drive arrangement.
Description
Technical field
The utility model relates to technical field of internal combustion engines, particularly to a kind of exhaust gas driven device,
On this basis, the egr system of this exhaust gas driven device of a kind of application is further related to.
Background technology
EGR (Exhaust Gas Recirculation) is that waste gas recycles, will engine row
The waste gas gone out is reintroduced back to enter back into combustion chamber after air inlet pipe mixes with fresh air and fires
Burn.Thus reduce engine NOXDischarge.
In turbocharged direct-injected diesel engine, owing to its air inlet pipe average pressure is higher than cycle gas pressure,
Waste gas can not flow to air inlet pipe from blast pipe automatically, adds difficulty to realizing waste gas recycling.
It addition, the high-temperature gas after supercharging is directly entered in engine, cause combustion knock, damage
The phenomenons such as even dead fire.To this, it usually needs the gas after supercharging is lowered the temperature, improve whirlpool
The scavenging efficiency of wheel engine with supercharger.
In prior art, egr system generally uses the turbine case that small cross sections is long-pending so that circulation
Exhaust gas pressure increases, it is ensured that cycle gas pressure is more than air inlet pipe average pressure, and is allowed to ensure
Certain difference such that it is able to make waste gas be flowed to air inlet pipe by blast pipe automatically.Meanwhile, in order to
Guarantee egr system efficiency under each operating mode, the most also use variable-area turbocharger regulation
Cycle gas pressure and the pressure reduction of air inlet pipe average pressure, thus be used for driving egr system to circulate
Waste gas enter in motor intake manifold.But, when using variable-area turbocharger,
Relatively costly, and reliability is low.
Further, after using aforesaid way, the EGT of supercharging is higher, needs in another increasing cold
Device, as cooling component, adds again equipment cost.
In view of this, it would be highly desirable to for above-mentioned technical problem, egr system of the prior art is done
Optimize design further, it is provided that a kind of simple in construction, low cost, cycle gas can either be increased
Pressure, can be lowered into again the exhaust gas driven device of engine exhaust gas temperature.
Utility model content
The purpose of this utility model drives waste gas to be started by EGR valve entrance for providing one to be used for
The exhaust gas driven device of machine inlet manifold, by this device pressurised exhaust gas, so that it is the most suitable
The entrance inlet manifold of profit.On this basis, another object of the present utility model is for providing one
Apply the egr system of this exhaust gas driven device.
For solving above-mentioned technical problem, the utility model provides a kind of exhaust gas driven device, is used for
Waste gas is driven to be entered the inlet manifold of engine by EGR valve, including:
First tracheae, diversion air enters described inlet manifold；
Flue gas leading, coordinates with described first tracheae sleeve, and forms circular passage between the two,
One end of described flue gas leading seals, and the other end connects with the gas outlet of described first tracheae, described
EGR valve is installed on the sealed end in described flue gas leading；
Impeller, is placed in described flue gas leading；
Turbine, is placed in described first tracheal strips, and it is described that air draught drives described turbine to drive
Wheel rotation；
The sidewall of described first tracheae offers annular gap, and it is described that described annular gap installs connection
Impeller and the side of the annular and separation dish of described turbine, described annular and separation dish and described first tracheae
Wall seals and is rotationally connected.
Alternatively, the channel cross-sectional area of described flue gas leading is along exhaust gas flow direction flaring.
Alternatively, described turbine meet air draught side center install kuppe, described in lead
Stream cover diversion air is to described turbine.
Alternatively, described kuppe is taper.
Alternatively, the second tracheae coordinated with described flue gas leading sleeve, shape between the two are also included
Circularize passage, gas outlet the connection gas outlet of described first tracheae, the institute of described second tracheae
Stating the gas outlet of flue gas leading, described second tracheae diversion air enters inlet manifold.
Alternatively, the air inlet of described first tracheae and described second tracheae each arranges import and opens
Close.
Alternatively, the channel cross-sectional area of described second tracheae is tapered along air draught direction.
Alternatively, described second tracheae of mutual sleeve, described flue gas leading, described first tracheae
In, the outlet port of the tracheae being placed on outer layer all stretches out the outlet port of the tracheae being inserted therein.
Alternatively, described second tracheae, described flue gas leading, the outlet port of described first tracheae
Sidewall all slope inwardly.
The utility model also provides for a kind of egr system, including the EGR controlling amount of recirculated exhaust gas
Valve and above-described exhaust gas driven device, described EGR valve is installed on described exhaust gas driven device
Flue gas leading.
A kind of exhaust gas driven device that the utility model provides, including the first tracheae, is placed on first
The flue gas leading of tracheae periphery, impeller and turbine, wherein, turbine is placed in the first tracheal strips, and
Impeller is placed in flue gas leading.Air is flowed to turbine by the air inlet of the first tracheae, thus to whirlpool
Wheel acting, makes the waste gas acting to circulation in flue gas leading of the turbine impeller.It is arranged such, will
First tracheal strips air internal energy is converted into mechanical energy, then is waste gas by impeller by changes mechanical energy
Interior energy, thus temperature can be converted into cycle gas pressure, be effectively improved cycle gas pressure,
Make it higher than inlet manifold average pressure, beneficially waste gas and flowed to inlet manifold by blast pipe automatically；
Waste gas in flue gas leading also can be cooled down by the first endotracheal air, after effectively reducing supercharging
The temperature of gas, evades high-temperature gas and causes combustion knock, damages even dead fire phenomenon；And
And, air is through turbine, waste gas after impeller, and both are in the gas outlet of the first tracheae and give up
The connectivity part of the gas outlet of tracheae rotates to be converged, thus uniformly mixes before entering engine.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of exhaust gas driven device in detailed description of the invention；
Fig. 2 is the planar structure schematic diagram of exhaust gas driven device；
Fig. 3 is the rotor bearing arrangement schematic diagram shown in Fig. 1.
Wherein, the corresponding relation between the reference in Fig. 1 to Fig. 3 and component names is:
Exhaust gas driven device 10；
First tracheae the 11, second tracheae 12, flue gas leading 13, impeller 14, turbine 15, annular
Separator disc 16, kuppe 17, rolling bearing 18, full support rotor 19；
First tracheal entrance switch 111, first on-off controller the 112, second tracheal entrance switch
121；
Cartridge housing 181, bearing block 182；
EGR valve 20.
Detailed description of the invention
Core of the present utility model drives waste gas to be started by EGR valve entrance for providing one to be used for
The exhaust gas driven device of machine inlet manifold, by this device pressurised exhaust gas, so that it is the most suitable
The entrance inlet manifold of profit.On this basis, another core of the present utility model is for providing one
Apply the egr system of this exhaust gas driven device.
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, under
Face combines the drawings and specific embodiments, and the utility model is described in further detail.
Refer to shown in Fig. 1 to Fig. 3, Fig. 1 is exhaust gas driven device in detailed description of the invention
Internal structure schematic diagram；Fig. 2 is the planar structure schematic diagram of exhaust gas driven device；Fig. 3 is figure
Rotor bearing arrangement schematic diagram shown in 1.
Wherein, the arrow in Fig. 2 is the flow direction of gas.
In a kind of detailed description of the invention, as it is shown in figure 1, the utility model provides a kind of waste gas
Driving means 10, for driving waste gas to be entered in the inlet manifold of engine by EGR valve 20.
This exhaust gas driven device 10 includes the first tracheae 11 and flue gas leading 13, and wherein flue gas leading 13 overlaps
Periphery in the first tracheae 11, say, that waste gas is to flow in the flue gas leading 13 of annular.
Wherein, the air inlet of the first tracheae 11 connects turbine 15 booster, and gas outlet connects air inlet discrimination
Pipe, enters engine by air conducting；And upstream extremity is provided with EGR valve 20 in flue gas leading 13,
Thus portion is introduced in this flue gas leading 13, along the guiding of flue gas leading 13 by waste gas water conservancy diversion
Enter in inlet manifold；The gas outlet of the first tracheae 11 connects with the gas outlet of flue gas leading 13, then
It is simultaneously connected with inlet manifold, so, makes air be sufficiently mixed all before entering engine with waste gas
Even.
Shown in Fig. 1 and Fig. 2, impeller 14, the first tracheae are installed in flue gas leading 13
Being provided with turbine 15 in 11, both are connected by annular and separation dish 16.This annular and separation dish 16
Be installed on the annular opening position of the first tracheae 11 sidewall, and with the end face seal of annular gap, turn
It is dynamically connected.So, impeller 14 is fixed on the side of annular and separation dish 16, turbine 15 is fixed
In the opposite side of annular and separation dish 16, lead to so that impeller 14, turbine 15 separate corresponding
In road.
During specific works, air is flowed to turbine 15, to turbine by the air inlet of the first tracheae 11
15 do work, so that turbine 15 impeller 14 is to the waste gas of circulation in flue gas leading 13
Acting.Utilizing the flowing of air in the first tracheae 11, interior by air can be converted into mechanical energy,
By impeller 14 by the interior energy that changes mechanical energy is waste gas, i.e. realize the pressure of pressurised exhaust gas,
Thus it is effectively improved cycle gas pressure so that it is higher than inlet manifold average pressure, it is achieved waste gas
Inlet manifold is flowed to automatically by blast pipe；And the flowing of air is also to waste gas in the first tracheae 11
Waste gas in pipe 13 cools down, and reduces the temperature of waste gas after supercharging, evades high-temperature gas and lead
Cause combustion knock, damage even dead fire phenomenon.
In a particular embodiment, turbine 15 and impeller 14 are set to integrative-structure, such as Fig. 1 and
Shown in Fig. 2, i.e. connected by above-mentioned annular and separation dish 16, simple and compact for structure.
In conjunction with the rotor bearing arrangement shown in Fig. 3, its turbine 15 is supported in by this structure
In one tracheae 11.Specifically include rolling bearing 18, be installed on the cartridge housing 181 of both sides, its rolling
Dynamic bearing 18 is set in rotor, and this rotor is full support rotor 19, is bolted to axle
In bearing 182, turbine 15 is installed on full support in rotor 19 structure.
Further, the channel cross-sectional area of flue gas leading 13 is along exhaust gas flow direction flaring, the most just
Being to say, the cross sectional area of flue gas leading 13 is gradually increased to position, gas outlet by gas inlet position
Greatly.So, further ensure that the raising of exhaust gas pressure in flue gas leading 13, promote waste gas by waste gas
Pipe 13 flows into the smoothness of inlet manifold.
In order to install EGR valve 20, the upstream extremity of flue gas leading 13 is that one section of channel cross-sectional area is bigger
Passage, be for only for ease of installation EGR valve 20, and this section sectional area change do not exist
In the scope that the channel cross-section of above-mentioned narration is the biggest.It is to say, above-mentioned air inlet position should
Enter the position of waste gas at flue gas leading 13 Inner guide for EGR valve 20.
As it is shown in figure 1, kuppe 17 is installed in the center that air draught side met by turbine 15,
Air conducting to turbine 15, is enabled air to uniformly sufficiently flow to turbine 15 by kuppe 17,
Be conducive to turbine 15 is done work.
In a particular embodiment, kuppe 17 is cone, its simple in construction, and can make
Air smooth homogeneous flow to turbine 15.Further, the space taking the first tracheae 11 is less,
It is easily installed enforcement.
For above-described embodiment, this exhaust gas driven device 10 also includes being placed on flue gas leading 13 periphery
The second tracheae 12, this second tracheae 12 diversion air enter inlet manifold, and, second
The gas outlet of tracheae 12 connects the gas outlet of the first tracheae 11, the gas outlet of flue gas leading 13.Knot
Closing shown in Fig. 1 and Fig. 2, the second tracheae 12 is the air communication channel of annular, and its air inlet is even
Logical turbocharger, after air enters this second tracheae 12, flows to outlet port, gives vent to anger at it
Mouth position is sufficiently mixed with the air of waste gas, the first tracheae 11 circulation.
It is that the waste gas in flue gas leading 13 cools down by this second tracheae 12, reduces further
The temperature of waste gas, evades high-temperature gas and enters engine, engine produces the phenomenons such as damage.
It should be noted that " first, second " used herein limits exhaust gas driven device 10
The passage of the diversion air of diverse location, wherein, the first tracheae 11 refers to be positioned at this waste gas and drives
Dynamic device 10 center, it is internal that this first tracheae 11 is positioned at flue gas leading 13, and and flue gas leading
The inwall of 13 has certain distance；And the second tracheae 12 refers to be placed on the periphery of flue gas leading 13,
And with the outer wall of flue gas leading 13, there is certain distance.Therefore, the restriction of first, second is only
In order to distinguish the passage of diverse location, the technical scheme that the application is claimed is not intended that limit
System.
As it is shown in figure 1, the air inlet at the first tracheae 11 and the second tracheae 12 is respectively provided with import
Switch, can control the size of respective air inlet, switch by inlet switch, thus control sky
The flow of gas and break-make.
Wherein, the first tracheae 11 regulates the first tracheal entrance by the first on-off controller 112 and opens
Pass 111 carries out opening and closing, controls to open size.Second tracheal entrance switch 121 is for being arranged at ring
The ring switch of the second tracheae 12 air inlet of shape, by rotating the second tracheal entrance switch 121
Opening and closing and open size, control enter the second tracheae 12 air capacity.
Further, the channel cross-sectional area of the second tracheae 12 is tapered along air draught direction, also
That is, by the air inlet of the second tracheae 12 to its direction, gas outlet, its cross sectional area by
Tapered little, thus the flowing velocity of air can be accelerated, promote the cooling effect to waste gas.
As in figure 2 it is shown, in a kind of specific embodiment, described second tracheae 12 of mutual sleeve,
In described flue gas leading 13, described first tracheae 11, the outlet port of the tracheae being placed on outer layer is equal
Stretch out the outlet port of the tracheae being inserted therein；It is to say, the outlet port of the second tracheae 12
Stretch out the outlet port of flue gas leading 13, the outlet port of flue gas leading 13 stretches out the first tracheae 11
Outlet port.Being arranged such, the conduit wall of this second tracheae 12 is connected to inlet manifold, also
Just it is so that the mixed gas of three enters inlet manifold, it is achieved before entering inlet manifold all
Even mixing air and waste gas, evade be connected respectively loaded down with trivial details with inlet manifold simultaneously.
Further, in order to effectively make the gas of passage at three be sufficiently mixed, the second tracheae
12, the sidewall of the outlet port of flue gas leading the 13, first tracheae 11 slopes inwardly, say, that
Second tracheae 12, flue gas leading the 13, first tracheae 11 outlet port end to respective passage
Internal bending, thus form reducing, directing gas flow collects at the end of this exhaust gas driven device 10,
And full and uniform mixing.
It should be noted that the tube interior at the center that inserts in that the above-mentioned noun of locality " interior " refers to, " outward "
Refer to be placed on the outside of outermost layer pipe；It follows that refer to from outside to inside by this waste gas
The outside of driving means is to the inside of its central tube.
In a kind of specific embodiment, the upstream extremity of flue gas leading 13 is close, and it is only installed
There is the EGR valve 20 importing waste gas, and the upstream extremity of flue gas leading 13 is disposed in proximity to the first tracheae
The middle part of 11；And first the inlet port of tracheae the 11, second tracheae 12 concordant.It is arranged such,
Flue gas leading 13 can be made to be fully located between first tracheae the 11, second tracheae 12, enable air to
Enough fully the waste gas in flue gas leading 13 is cooled down, improve cooling effect.
Certainly, it is possible to make the upstream extremity of flue gas leading 13 approximate concordant first tracheae the 11, second gas
The air inlet of pipe 12, only need to make the upstream extremity of flue gas leading 13 still in closed state.
In addition to above-mentioned exhaust gas driven device 10, the utility model also provides for a kind of egr system,
It includes controlling the EGR valve 20 of amount of recirculated exhaust gas and above-mentioned exhaust gas driven device 10,
EGR valve 20 is installed in the flue gas leading 13 of exhaust gas driven device 10, thus is imported by waste gas
In this exhaust gas driven device 10.Other structures of this egr system and annexation, work are former
Manage please also refer to prior art, owing to above-mentioned exhaust gas driven device 10 has above technology effect
Really, therefore, the egr system with this exhaust gas driven device 10 should also be as having identical skill
Art effect, does not repeats them here.
Above egr system provided by the utility model and exhaust gas driven device thereof are carried out
It is discussed in detail.Principle of the present utility model and embodiment are entered by specific case used herein
Gone elaboration, the explanation of above example be only intended to help to understand method of the present utility model and
Its core concept.It should be pointed out that, for those skilled in the art, not
Depart from the premise of the utility model principle, it is also possible to the utility model is carried out some improvement and
Modifying, these improve and modification also falls in the utility model scope of the claims.
Claims (10)
1. an exhaust gas driven device, is used for driving waste gas to be entered the inlet manifold of engine by EGR valve (20), it is characterised in that including:
First tracheae (11), diversion air enters described inlet manifold；
Flue gas leading (13), coordinate with described first tracheae (11) sleeve, and form circular passage between the two, one end of described flue gas leading (13) seals, the other end connects with the gas outlet of described first tracheae (11), and described EGR valve (20) is installed on the sealed end in described flue gas leading (13)；
Impeller (14), is placed in described flue gas leading (13)；
Turbine (15), is placed in described first tracheae (11), and air draught drives described turbine (15) to drive described impeller (14) to rotate；
The sidewall of described first tracheae (11) offers annular gap, described annular gap installs the annular and separation dish (16) connecting described impeller (14) with described turbine (15), and described annular and separation dish (16) seals with the sidewall of described first tracheae (11) and is rotationally connected.
Exhaust gas driven device the most according to claim 1, it is characterised in that the channel cross-sectional area of described flue gas leading (13) is along exhaust gas flow direction flaring.
Exhaust gas driven device the most according to claim 1, it is characterized in that, described turbine (15) is met the center of air draught side and is installed kuppe (17), described kuppe (17) diversion air to described turbine (15).
Exhaust gas driven device the most according to claim 3, it is characterised in that described kuppe (17) is taper.
5. according to the exhaust gas driven device described in any one of claim 1-4, it is characterized in that, also include the second tracheae (12) coordinated with described flue gas leading (13) sleeve, form circular passage between the two, gas outlet the connection gas outlet of described first tracheae (11), the gas outlet of described flue gas leading (13) of described second tracheae (12), described second tracheae (12) diversion air enters inlet manifold.
Exhaust gas driven device the most according to claim 5, it is characterised in that the air inlet of described first tracheae (11) and described second tracheae (12) each arranges inlet switch.
Exhaust gas driven device the most according to claim 5, it is characterised in that the channel cross-sectional area of described second tracheae (12) is tapered along air draught direction.
Exhaust gas driven device the most according to claim 5, it is characterized in that, mutually in described second tracheae (12) of sleeve, described flue gas leading (13), described first tracheae (11), the outlet port of the tracheae being placed on outer layer all stretches out the outlet port of the tracheae being inserted therein.
Exhaust gas driven device the most according to claim 8, it is characterised in that described second tracheae (12), described flue gas leading (13), the sidewall of outlet port of described first tracheae (11) all slope inwardly.
10. an egr system, it is characterized in that, including the exhaust gas driven device (10) controlled described in the EGR valve (20) of amount of recirculated exhaust gas and any one of claim 1-9, described EGR valve (20) is installed on the flue gas leading (13) of described exhaust gas driven device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620083491.5U CN205532933U (en) | 2016-01-27 | 2016-01-27 | EGR system and waste gas drive arrangement thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620083491.5U CN205532933U (en) | 2016-01-27 | 2016-01-27 | EGR system and waste gas drive arrangement thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205532933U true CN205532933U (en) | 2016-08-31 |
Family
ID=56772395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620083491.5U Withdrawn - After Issue CN205532933U (en) | 2016-01-27 | 2016-01-27 | EGR system and waste gas drive arrangement thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205532933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545535A (en) * | 2016-01-27 | 2016-05-04 | 大连依勒斯涡轮增压技术有限公司 | EGR (exhaust gas recirculation) system and exhaust gas drive device thereof |
| CN108825562A (en) * | 2018-04-28 | 2018-11-16 | 西北工业大学 | A kind of twin-channel supercharging device |
| CN108843618A (en) * | 2018-04-28 | 2018-11-20 | 西北工业大学 | A kind of plenum member |
-
2016
- 2016-01-27 CN CN201620083491.5U patent/CN205532933U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545535A (en) * | 2016-01-27 | 2016-05-04 | 大连依勒斯涡轮增压技术有限公司 | EGR (exhaust gas recirculation) system and exhaust gas drive device thereof |
| CN108825562A (en) * | 2018-04-28 | 2018-11-16 | 西北工业大学 | A kind of twin-channel supercharging device |
| CN108843618A (en) * | 2018-04-28 | 2018-11-20 | 西北工业大学 | A kind of plenum member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20180525 |