CN105443207A - Reducing agent delivery unit of liquid cooling of selective catalytic reduction system of motor vehicle - Google Patents
Reducing agent delivery unit of liquid cooling of selective catalytic reduction system of motor vehicle Download PDFInfo
- Publication number
- CN105443207A CN105443207A CN201410476887.1A CN201410476887A CN105443207A CN 105443207 A CN105443207 A CN 105443207A CN 201410476887 A CN201410476887 A CN 201410476887A CN 105443207 A CN105443207 A CN 105443207A
- Authority
- CN
- China
- Prior art keywords
- casing pipe
- lower parts
- inner sleeve
- parts casing
- guard shield
- 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.)
- Pending
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Classifications
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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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- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a reducing agent delivery unit with an active cooling function. According to the reducing agent delivery unit, the structural stability is high enough, the corrosion resistance of components is improved, and the situation that a base ejector is corroded due to the utilization of incorrect cooling agent media is avoided. The reducing agent delivery unit is provided with an upper protection cover, a lower protection cover connected to the upper protection cover, and an inner sleeve and further comprises a lower sleeve which is connected to the inner sleeve and the lower protection cover. A liquid cooling cavity is formed through the connection between the inner sleeve and the lower protection cover, the connection between the lower sleeve and the lower protection cover as well as the connection between the lower sleeve and the inner sleeve. Cooling agents flow into the liquid cooling cavity and provide a cooling function for an ejector which is partially located in the inner sleeve. In addition, a corrugated part of the lower sleeve is used for transferring and dissipating heat away from at least part of the ejector.
Description
Technical field
Present invention relates in general to as the reducing agent delivery unit for Motor Vehicle selective catalytic reduction system operating provides active cooling.
Background technique
The realization of novel exhaust after-treatment system is being promoted, especially for the lean combustion technology of ignition by compression (diesel oil) motor such as operated under lean combustion and super lean-burn condition and stratified charge spark ignition engine (usually utilize and directly spray) in Europe and the new Abgasgesetz of North America.Lean-burn automotive display has high nitrogen oxide (NOx) emission level, and this is reluctant in the oxygen rich exhaust environmental characteristics of Lean burn combustion.Developing the exhaust gas aftertreatment techniques processing NOx in such a situa-tion at present.
One in these technology includes and is beneficial to ammonia (NH
3) react to produce nitrogen (N with the nitrogen oxide (NOx) of exhaust
2) and water (H
2o) catalyzer.This technology is called as selective catalytic reduction (SCR).Ammonia is reluctant in automotive environment under its respective pure form, therefore these systems use traditionally usually 32% urea (CO (NH
2)
2) the liquid urea aqueous solution under concentration.This solution is called as AUS-32, and also known with its trade name AdBlue.Urea is delivered to flow of hot exhaust and in exhaust, changes into ammonia after experience pyrolysis or thermolysis, becomes ammonia and isocyanic acid (HNCO).Isocyanic acid is then hydrolyzed with the water experience that exists in exhaust and changes into ammonia and carbon dioxide (CO
2), the ammonia produced by pyrolysis and hydrolysis then experiences catalytic reaction with foregoing nitrogen oxide.
In some systems, reducing agent delivery unit (RDU) is arranged on the downstream part of exhaust line below vehicle body.This causes the low transformation efficiency of the temperature relatively low at SCR catalyst place, longer light-off time and NOx.Attempt SCR catalyst and RDU sparger to relocate to closer to motor place, to provide the exhaust of higher temperature for the more high efficiency conversion of ignition and NOx faster.
But this in-plant layout can cause the surrounding environment for heat high sparger.In this case, may need the active cooling of sparger to prevent ejector top and the superheating of therefore AUS-32 working fluid.
Summary of the invention
The present invention is the reducing agent delivery unit with active cooling, and it is configured to have enough structure steadiness and the corrosion resistance improving assembly, wherein can expect by using incorrect coolant media and erosion to base portion sparger.
In one embodiment, reducing agent delivery unit has upper shroud, is connected to the bottom guard shield of upper shroud and inner sleeve.The outer surface of inner sleeve is connected to the internal surface of upper shroud and the internal surface of bottom guard shield.Reducing agent delivery unit also comprises the lower parts casing pipe with outer surface, and wherein, a part for the outer surface of lower parts casing pipe is connected to the internal surface of inner sleeve, and another part of the outer surface of lower parts casing pipe is connected to the outer surface of bottom guard shield.Liquid cooling cavity is by being connected to form between inner sleeve and bottom guard shield, between lower parts casing pipe and bottom guard shield and between lower parts casing pipe and inner sleeve.Wavy (corrugated) part is formed as a part for lower parts casing pipe, and sparger is positioned partially in inner sleeve, and is positioned partially in lower parts casing pipe.Freezing mixture influent cooling cavities is to provide refrigerating function to sparger, and the wavelike segments of lower parts casing pipe by heat transmission away from sparger at least partially.
First tie point is by being connected to form between the outer surface and the internal surface of bottom guard shield of inner sleeve, second tie point is formed by the part of outer surface of lower parts casing pipe for the internal surface being connected to inner sleeve, and the 3rd tie point is formed by the region of outer surface of lower parts casing pipe of the outer surface being connected to bottom guard shield.
Sparger comprises lower body, and a part for lower body is pressure fitted in the wavelike segments of lower parts casing pipe.
The reducing agent delivery system (RDU) that the object of the invention is via active cooling provides AUS-32 sending to engine exhaust, uses in the SCR exhaust after treatment system on vehicle.
Another object of the present invention provides active cooling to RDU from independent fluid loop.Although the source of cooling liquid can be change, it is within the scope of the invention that the engine coolant from available engine coolant circuit uses together with RDU of the present invention.
Another object of the present invention is to provide a kind of solution of the coolant exhaust fitting seat injection unit due to the mounting point of extreme high heat.
The further Applicable scope of the present invention will be become apparent by detailed description provided below.Although should be appreciated that detailed description and concrete example instruction the preferred embodiments of the present invention, it is intended to only for illustrating object, and also not intended to be limits the scope of the invention.
Accompanying drawing explanation
Will comprehend the present invention by the detailed description and the accompanying drawings, in the accompanying drawings:
Fig. 1 is the side view of the reducing agent delivery unit according to an embodiment of the invention with active cooling;
Fig. 2 is the sectional view of the reducing agent delivery unit according to an embodiment of the invention with active cooling; And
Fig. 3 is the sectional view of the reducing agent delivery unit according to an embodiment of the invention with active cooling, and wherein in inner member, some are removed.
Embodiment
The following description of (multiple) preferred embodiment is only exemplary in essence, and is never intended to limit invention, its application, or uses.
Referring to Fig. 1-3, the embodiment with the reducing agent delivery unit of active cooling for Motor Vehicle selective catalytic reduction (SCR) system illustrates at 10 places generally.Reducing agent delivery unit 10 comprises outside case generally shown in 12 places or housing, and case 12 comprises and keeps cap 14, and keep cap 14 to be connected to upper shroud 16 and bottom guard shield 18, bottom guard shield 18 is also connected to upper shroud 16.Maintenance cap 14 and case 16,18 form the cavity generally shown in 20 places when connecting together, in this cavity, be provided with various parts.
Cap 14 surrounds hydraulic connector 22 at least in part.Hydraulic connector 22 has inlet duct 24 and entry cup 26, and together with inlet duct 24 forms in this embodiment with entry cup 26, but within the scope of the invention, inlet duct 24 and entry cup 26 can be individually formed.Inlet duct 24 comprises aperture 28, and it extends through pipe 24 and is communicated with internal cavity (illustrating the 30 generally) fluid formed by entry cup 26, as being clear that in fig. 2.Internal cavity 30 is communicated with the sparger fluid generally shown in 32 places, and sparger 32 is arranged in cavity 20.
Cap 14 is kept to be held in place by entry cup 26 by welding with upper shroud 16.Upper shroud 16 is constructed such that the heat trnasfer of internal volume from the surrounding environment of heat to unit 10 and AUS-32 fluid passage minimizes, particularly in transient prediction (such as, motor is down to idling at trailer in tow after climbing the mountain) period.By doing like this, the thermal capacity of upper shroud 16 is protected for the short-term heating of the inner member of sparger 32.Upper shroud 16 joins bottom guard shield 18 to by laser bonding (but also can by hard soldering).
Sparger 32 comprises upper body 34, its be hollow and be communicated with internal cavity 30 fluid.A part for upper body 34 is surrounded by the first Sealing, first Sealing is top O shape ring 36 in this embodiment, it contacts with the inwall 38 of internal cavity 30, be tightly connected to provide between upper body 34 and entry cup 26, thus guarantee that all fluids flowing through entry cup 26 all enter in upper body 34.
Upper body 34 is surrounded by the shell 40 with connector 42.Connector 42 and coil 44 conduct, and coil 44 is parts of the solenoid portion generally shown in 46 places.Solenoid portion 46 is parts of sparger 32, and controls the movement of the valve portion generally shown in 48 places, and valve portion is also a part for sparger 32.Except coil 44, solenoid portion 46 also comprises the pole piece 50 and moveable armature 52 that are surrounded by coil 44.Pole piece 50 and armature 52 are hollow substantially, make return spring 54 be arranged on by pole piece 50 and armature 52 formed generally in the cavity shown in 56.When seeing in fig. 2, return spring 54 by armature 52 biased downward, and therefore towards closed position valve portion 48.Return spring 54 is between armature 52 and stop member 58.
The valve portion 48 first end place be included in generally shown in 62 places is connected to the pipe 60 of armature 52 and is connected to the ball 64 of the second end on the whole shown in 66 places.Ball 64 is parts of valve, and valve also comprises valve seat 68.Valve seat 68 is arranged in the lower end of lower body 70, and lower body 70 is connected to pole piece 50, and lower body 70 is partly surrounded by coil 44.The movement of ball 64 is controlled by guider 74.Guider 74 comprises ball 64 and moves the guide apertures 92 passed through, and also comprises the side opening mouth 76 that fluid flows through.Valve seat 68 comprises cone-shaped section 78, and when the valve is in the closed position, ball 64 is shelved on cone-shaped section 78.Valve seat 68 also comprises center port 80, and when fluid leaves sparger 32, fluid is through center port 80.
In the operation period of sparger 32, valve and more specifically pipe 60 and ball 64 biased to contact valve seat 68 by return spring 54, and therefore valve to be maintained in its closed position.When coil 44 is energized, armature 52 is pulled to pole piece 50.The energising of coil 44 generates enough power, makes armature 52 overcome the power of return spring 54, and moves towards pole piece 50.Because pipe 60 is connected to armature 52 and ball 64 is connected to pipe 60, so armature 52 makes ball 64 move away from valve seat 68 towards the movement of pole piece 50, thus open valve.When the valve is in an open state, fluid flows through internal cavity 30, upper body 34, pole piece 50, armature 52, pipe 60 and leave the multiple of the part being formed as pipe 60 and exit aperture 72 from aperture 28.After aperture 72 is exited in fluid outflow, fluid through side opening mouth 76, and flows out center port 80.
When coil 44 is no longer energized, return spring 54 forces armature 52 away from pole piece 50, and mobile armature 52, pipe 60 and ball 64, ball 64 is placed by the cone-shaped section 78 against valve seat 68, thus valve is placed in closed position.
Solenoid portion 46 also comprises housing 82, and it surrounds coil 44 and lower body 70 at least in part.What surround a part for housing 82 is the second Sealing, and the seal is bottom O shape ring 84 in this embodiment, and bottom O shape ring 84 is surrounded by inner sleeve 86.Inner sleeve 86 is arranged in cavity 20, and a part for the outer surface 88 of inner sleeve 86 (by using welding) is connected to the internal surface 90 of upper shroud 16 and both internal surfaces 94 of bottom guard shield 18.The first tie point 108 is connected to form between the outer surface 88 and the internal surface 94 of bottom guard shield 18 of inner sleeve 86.A part for lower body 70 is also surrounded by lower parts casing pipe 96.Lower parts casing pipe 96 comprises outer surface 98, and a part for the outer surface 98 of lower parts casing pipe 96 is by weld or brazing procedure is connected to the internal surface 100 of inner sleeve 86, forms the second tie point 102.Another region of the outer surface 98 of lower parts casing pipe 96 is by by weld or brazing procedure is connected to the outer surface 104 of bottom guard shield 18, to form the 3rd tie point 106.
Lower parts casing pipe 96 surrounds the lower end of the lower body 70 generally shown in 110 places.More specifically, lower parts casing pipe 96 is shaped so that lower parts casing pipe 96 comprises the wavelike segments 112 with ridge, and the lower end 110 of ridge contact lower body 70, makes lower body 70 be pressure fitted into lower parts casing pipe 96.Wavelike segments 112 is used for heat transmission to leave the part of the lower body 70 of being surrounded by wavelike segments 112.Connection between inner sleeve 86 and bottom guard shield 18, the connection between lower parts casing pipe 96 and bottom guard shield 18 and the liquid cooling cavity be connected to form generally shown in 114 places between lower parts casing pipe 96 and bottom guard shield 18.
Bottom guard shield 18 has various profile and shape, and it not only forms the lower end 110 for being connected with lower parts casing pipe 96, and forms the shape of liquid cooling cavity 114.Also there are two apertures being formed as a part for bottom guard shield 18, two hydraulic connectors are fixedly secured in them.More specifically, there is the inlet pressure connector 116 be arranged in the (not shown) of coolant entrance aperture and the outlet hydraulic connector 118 be arranged in coolant outlet aperture 120.Coolant outlet aperture 120 and coolant entrance aperture are substantially similar, therefore only illustrate one.
Bottom guard shield 18 joins inner sleeve 86 to airtightly by laser bonding or hard soldering.The outer surface 88 of inner sleeve 86 and the internal surface 94 of bottom guard shield 18 form the basic border surface of liquid cooling cavity 114.Liquid is introduced cavity 114 via the entrance aperture in bottom guard shield 18 and exit aperture 120 and is discharged from cavity 114, and entrance aperture and exit aperture 120 are furnished with the hydraulic connector 116,118 also joining bottom guard shield 18 preferably by hard soldering to.
It is space-minimized that inner sleeve 86 is designed so that between and the coated profiled surface of various sparger inner at inner sleeve 86.It is also understood that this volume also can be filled with conductivity compound to be improved to the heat trnasfer of the liquid coolant in cavity 114.In addition, inner sleeve 86, lower parts casing pipe 96 and bottom guard shield 18 are shaped so that the stress on tie point 108,102,106 is minimized.Lower parts casing pipe 96 comprises outward extending flange 122, and it contacts and is connected to the outer surface 104 of bottom guard shield 18.More particularly, bottom guard shield 18 comprises the flange 124 extended internally, and it is connected to outward extending flange 122, to form the 3rd tie point 106 by welding or brazing procedure.Outer surface 104 is the parts of the flange 124 extended internally.Lower parts casing pipe 96 also comprises the flange 126 upwards extended, and it contacts and is connected to the internal surface 100 of inner sleeve 86.In this embodiment, inner sleeve 86 comprises the flange 128 to downward-extension, and it is connected to the flange 126 that upwards extends to form the second tie point 102 by welding or brazing procedure.The internal surface 100 of inner sleeve 86 is parts of the flange 128 to downward-extension.
The outer surface being installed to bottom guard shield 18 is V-arrangement clamp flange 130, and it is for being arranged on the somewhere along vent systems by reducing agent delivery unit 10.In one embodiment, reducing agent delivery unit 10 can be installed to outlet pipe, but within the scope of the invention, reducing agent delivery unit 10 can be installed to gas exhaust manifold or other exhaust system component.In the operation period of unit 10, engine coolant is pumped to inlet pressure connector 116 and by inlet pressure connector 116 influent cooling cavities 114.Freezing mixture then cycles through liquid cooling cavity 114 and leaves liquid cooling cavity 114 by outlet hydraulic connector 118.Due to the weld seam at three tie points 108,102,106 place, freezing mixture is prevented from contacting with the solenoid portion 46 of sparger 32.This circulation of freezing mixture turnover liquid cooling cavities 114 makes reducing agent delivery unit 10 cool, and provides more consistent operating temperature for reducing agent delivery unit 10.
One for be applicable to V-arrangement clamp flange 130 shown here with the interface of exhaust line.Other installs configuration is also possible, comprises the flange with bolt.V-arrangement clamp flange 130 (or other flange configuration) also joins bottom guard shield 18 to preferably by hard soldering.Should be appreciated that and utilize an operation can realize multiple bracing operation simultaneously.Realization for seal washer is then provided suitable surface and geometrical shape by flange 130, in case stop-pass crosses the exhaust gas leakage of flange/tower interface.
That unit 10 can keep the constant fluid temperature (F.T.) of the urea as limited by liquid cooling loops thus for reducing agent delivery unit 10 provides the additional advantage of liquid cooling.Like this, can simplify or even eliminate the temperature adjustmemt for adjusting density in working fluid and viscosity B coefficent widely, this correction is that any temperature feedback system may need (such as, coil current is measured) usually.
In use, urea liquid is fed by inlet duct 24, makes urea liquid pass internal cavity 30 and enters the upper body 34 of sparger 32.In this embodiment, inlet duct 24 is depicted as and is substantially perpendicular to sparger 32, and this packs advantage for some devices provide some.But the radial oriented and axial orientation of inlet duct 24 can be change.In this embodiment, inlet duct 24 and entry cup 26 integrally turn to one; But also can be two-piece construction (inlet duct 24 and entry cup 26), this structure may be favourable from the angle of structure.
Description of the invention is only exemplary in essence, and the modification therefore not departing from main idea of the present invention is intended within the scope of the invention.Such modification is not considered to depart from the spirit and scope of the present invention.
Claims (16)
1. an equipment, comprising:
Reducing agent delivery unit, it comprises:
Liquid cooling cavity;
Lower parts casing pipe, a part for described lower parts casing pipe forms a part for described liquid cooling cavity; And
Sparger, it is surrounded by described liquid cooling cavity substantially;
Wherein, circulate coolant enters and leaves described liquid cooling cavity to control the temperature of described sparger.
2. equipment according to claim 1, also comprises:
Inner sleeve, it is connected to described lower parts casing pipe; And
Bottom guard shield, it is connected to described inner sleeve and described lower parts casing pipe, and described bottom guard shield, inner sleeve and bottom sleeve pipe form described liquid cooling cavity.
3. equipment according to claim 2, also comprises:
Outer surface, it is formed as a part for described inner sleeve;
Internal surface, it is formed as a part for described bottom guard shield, and the described internal surface of described bottom guard shield is connected to the described outer surface of described inner sleeve; And
Outer surface, it is formed as a part for described lower parts casing pipe;
Wherein, a part for the described outer surface of described lower parts casing pipe is connected to the described internal surface of described inner sleeve, and another part of the described outer surface of described lower parts casing pipe is connected to the outer surface of described bottom guard shield.
4. equipment according to claim 3, also comprises:
First tie point, it is by being connected to form between the described outer surface and the described internal surface of described bottom guard shield of described inner sleeve;
Second tie point, it is formed by the part of described outer surface of described lower parts casing pipe for the internal surface being connected to described inner sleeve; And
3rd tie point, it is formed by the region of described outer surface of described lower parts casing pipe of the described outer surface being connected to described bottom guard shield.
5. equipment according to claim 4, also comprises:
The flange upwards extended, it is formed as a part for described lower parts casing pipe; And
To the flange of downward-extension, its be formed as being connected to described in the part of the described inner sleeve of flange that upwards extends;
Wherein, between the described flange that upwards extends and the described flange to downward-extension, be connected to form described second tie point at least partially.
6. equipment according to claim 4, also comprises:
The flange extended internally, it forms a part for described bottom guard shield; And
Outward extending flange, a part for the described lower parts casing pipe of the flange extended internally described in its formation is connected to;
Wherein, between the described flange that extends internally and described outward extending flange, be connected to form described 3rd tie point at least partially.
7. equipment according to claim 1, described lower parts casing pipe also comprises wavelike segments, during for cycling through described liquid cooling cavity at fluid, described sparger is left in heat transmission.
8. equipment according to claim 7, described sparger also comprises:
Valve portion; And
Lower body, it is a part for described valve portion;
Wherein, a part for described lower body is pressure fitted in the described wavelike segments of described lower parts casing pipe.
9. a reducing agent delivery unit, comprising:
Bottom guard shield;
Inner sleeve, it is connected to described bottom guard shield;
Lower parts casing pipe, it is connected to described inner sleeve and described bottom guard shield;
Wavelike segments, it is formed as a part for described lower parts casing pipe;
Sparger, it is surrounded at least in part by described inner sleeve and is at least partially disposed in described wavelike segments; And
Liquid cooling cavity, it is by the connection between described inner sleeve and described bottom guard shield, connection between described lower parts casing pipe and described bottom guard shield and being connected to form between described lower parts casing pipe and described inner sleeve, and described liquid cooling cavity is used for receiving and circulating coolant;
Wherein, freezing mixture flows into and flows out described liquid cooling cavity, and circulate coolant is by described liquid cooling cavity, to allow described wavelike segments, described sparger is left in heat transmission.
10. reducing agent delivery unit according to claim 9, described sparger also comprises:
Solenoid portion;
Valve portion, it is controlled by described solenoid portion; And
Lower body, described lower body is a part for described valve portion;
Wherein, described lower body is at least partially disposed in described lower parts casing pipe, a part for described lower body is arranged in described wavelike segments and contacts with described wavelike segments.
11. reducing agent delivery unit according to claim 9, wherein, a part for described lower body is pressure fitted in described wavelike segments.
12. reducing agent delivery unit according to claim 9, also comprise:
Outer surface, it is formed as a part for described inner sleeve;
Internal surface, it is formed as a part for described bottom guard shield, and the described internal surface of described bottom guard shield is connected to the described outer surface of described inner sleeve; And
Outer surface, it is formed as a part for described lower parts casing pipe;
Wherein, a part for the described outer surface of described lower parts casing pipe is connected to the described internal surface of described inner sleeve, and another part of the described outer surface of described lower parts casing pipe is connected to the outer surface of described bottom guard shield.
13. reducing agent delivery unit according to claim 12, also comprise:
First tie point, it is by being connected to form between the described outer surface and the described internal surface of described bottom guard shield of described inner sleeve;
Second tie point, it is formed by the part of described outer surface of described lower parts casing pipe for the internal surface being connected to described inner sleeve; And
3rd tie point, it is formed by the region of described outer surface of described lower parts casing pipe of the described outer surface being connected to described bottom guard shield.
14. 1 kinds of reducing agent delivery unit with active cooling, comprising:
Upper shroud;
Bottom guard shield, it is connected to described upper shroud;
Inner sleeve, the outer surface of described inner sleeve is connected to the internal surface of described upper shroud and the internal surface of described bottom guard shield;
Lower parts casing pipe, it has outer surface, and a part for the described outer surface of described lower parts casing pipe is connected to the described internal surface of described inner sleeve, and another part of the described outer surface of described lower parts casing pipe is connected to the outer surface of described bottom guard shield;
Wavelike segments, it is formed as a part for described lower parts casing pipe;
Sparger, it to be positioned partially in described inner sleeve and to be positioned partially in described lower parts casing pipe; And
Liquid cooling cavity, it is by being connected to form between described inner sleeve and described bottom guard shield, between described lower parts casing pipe and described bottom guard shield and between described lower parts casing pipe and described inner sleeve;
Wherein, freezing mixture flows into described liquid cooling cavity to provide refrigerating function to described sparger, and the described wavelike segments of described lower parts casing pipe by heat transmission away from described sparger at least partially.
The 15. reducing agent delivery unit with active cooling according to claim 14, also comprise:
First tie point, it is by being connected to form between the described outer surface and the described internal surface of described bottom guard shield of described inner sleeve;
Second tie point, it is formed by the part of described outer surface of described lower parts casing pipe for the internal surface being connected to described inner sleeve; And
3rd tie point, it is formed by the region of described outer surface of described lower parts casing pipe of the described outer surface being connected to described bottom guard shield.
The 16. reducing agent delivery unit with active cooling according to claim 14, described sparger also comprises lower body, and wherein, a part for described lower body is pressure fitted in the described wavelike segments of described lower parts casing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476887.1A CN105443207A (en) | 2014-09-18 | 2014-09-18 | Reducing agent delivery unit of liquid cooling of selective catalytic reduction system of motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476887.1A CN105443207A (en) | 2014-09-18 | 2014-09-18 | Reducing agent delivery unit of liquid cooling of selective catalytic reduction system of motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443207A true CN105443207A (en) | 2016-03-30 |
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ID=55553777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410476887.1A Pending CN105443207A (en) | 2014-09-18 | 2014-09-18 | Reducing agent delivery unit of liquid cooling of selective catalytic reduction system of motor vehicle |
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|---|---|
| CN (1) | CN105443207A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020133475A (en) * | 2019-02-18 | 2020-08-31 | 株式会社デンソー | Cooling device |
| CN112512665A (en) * | 2018-07-25 | 2021-03-16 | 天纳克汽车经营有限公司 | Reagent injector freeze protection |
| CN113167162A (en) * | 2018-11-15 | 2021-07-23 | 纬湃科技有限责任公司 | Reductant dosing module with heat transfer coating |
-
2014
- 2014-09-18 CN CN201410476887.1A patent/CN105443207A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112512665A (en) * | 2018-07-25 | 2021-03-16 | 天纳克汽车经营有限公司 | Reagent injector freeze protection |
| CN112512665B (en) * | 2018-07-25 | 2023-04-14 | 天纳克汽车经营有限公司 | Reagent injector freeze protection |
| CN113167162A (en) * | 2018-11-15 | 2021-07-23 | 纬湃科技有限责任公司 | Reductant dosing module with heat transfer coating |
| CN113167162B (en) * | 2018-11-15 | 2022-09-02 | 纬湃科技有限责任公司 | Reductant dosing module with heat transfer coating |
| JP2020133475A (en) * | 2019-02-18 | 2020-08-31 | 株式会社デンソー | Cooling device |
| JP7135924B2 (en) | 2019-02-18 | 2022-09-13 | 株式会社デンソー | Cooling system |
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