CN203239429U - Fluid control valve as well as reducing agent supply module and SCR (semiconductor control rectifier) system with same - Google Patents
Fluid control valve as well as reducing agent supply module and SCR (semiconductor control rectifier) system with same Download PDFInfo
- Publication number
- CN203239429U CN203239429U CN2013201507762U CN201320150776U CN203239429U CN 203239429 U CN203239429 U CN 203239429U CN 2013201507762 U CN2013201507762 U CN 2013201507762U CN 201320150776 U CN201320150776 U CN 201320150776U CN 203239429 U CN203239429 U CN 203239429U
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- China
- Prior art keywords
- valve body
- control valve
- fluids
- elastic film
- throttle orifice
- 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.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
- F16K15/145—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements being shaped as a solids of revolution, e.g. cylindrical or conical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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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
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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
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Gas After Treatment (AREA)
- Valve Housings (AREA)
Abstract
The utility model relates to a fluid control valve which is used for an engine SCR (semiconductor control rectifier) system. The fluid control valve is characterized by comprising a cylindrical valve body, wherein the valve body is provided with a first end part and a second end part along the axial direction, an inflow passage and an outflow passage are arranged inside the valve body, the inflow passage and the outflow passage stretches into the valve body respectively from the first end part and the second end part along the axial direction, the inflow passage and the outflow passage are mutually separated from each other, a throttling hole which is communicated with the inflow passage is formed on the outer circumferential wall of the valve body, and a circulating hole which is communicated with the outflow passage is formed on the outer circumferential wall of the valve body; and an elastic film is closely attached to the outer circumferential edge of the valve body and covers the throttling hole, and the elastic film is provided with an elastic structure which is used for opening the throttling hole when the fluid pressure in the inflow passage reaches a preset value so as to allow the fluid to flow out and for restoring the throttling hole to the original position when the fluid pressure is smaller than the preset value so as to stop the outflow of the fluid. The utility model also relates to a reducing agent supply module with the fluid control valve and an SCR system for a vehicle.
Description
Technical field
The reducing agent supply module that the utility model relates to a kind of control valve for fluids and has this control valve for fluids, relate in particular to a kind of control valve for fluids and reducing agent supply module that is applicable to selective catalytic reduction (Selective Catalytic Reduction, the SCR) system of vehicle (particularly diesel-engine road vehicle) motor.The utility model also relates to the SCR system of vehicle.
Background technique
At present motor, especially in the diesel engine, the SCR technology is widely used in reducing the discharge of motor harmful gas NOx.
Urea or aminoquinoxaline can be used as producing the carrier of reduction medium ammonia (NH3).Be provided with urea (for example AdBlue adds indigo plant) supply module and dosage distribution module in the SCR system commonly used at present.Urea in the urea box is supplied to the dosage distribution module via the urea supply module.
In the urea supply module, be provided with control valve for fluids, be used for guaranteeing that supply line has the urea-spray speed of stable system pressure to guarantee to expect.Control valve for fluids is as the one-way valve with throttling function.Specifically, on the one hand, during engine operation, supply module is worked thereupon, and at this moment, the pressure in the supply line is so that the one-way valve unlatching of control valve for fluids, under the throttling action of control valve for fluids, produce stable working pressure in the supply line, work with the post dose distribution module.On the other hand, when engine stop was worked, the urea liquid in the supply line must be back in the urea box (tank).In above situation, because the one-way valve effect of control valve for fluids, the urea liquid in the pipeline can adverse current.
Existing control valve for fluids comprises valve body, axially is formed on passage in the valve body, is formed on throttle orifice on the valve body end wall at passage one end, is placed in Metal Ball in the described passage and helical spring etc. along valve body in the SCR system.Under normal conditions, Metal Ball is sealed throttle orifice under the effect of pressing of spring force.
Above-mentioned existing control valve for fluids complex structure needs the parts such as spring, Metal Ball, and manufacture cost is high.And, any one parts in the control valve for fluids, damages such as Metal Ball or spring just must change whole control valve for fluids, so the maintenance cost in its later stage is high.In addition, not very good with the effect of Metal Ball sealing section discharge orifice yet.
The model utility content
In view of existing the problems referred to above of control valve for fluids of existing selective catalytic reduction system operating for diesel engine, the purpose of this utility model provides a kind of control valve for fluids simple in structure, and it can reduce the maintenance cost in manufacture cost and/or later stage.And according to a favourable aspect of the present utility model, can also improve the sealing effect of hole when sealing of flow controller.
The utility model provides a kind of control valve for fluids of the selective catalytic reduction system operating for motor, it is characterized in that comprising: columniform valve body, described valve body has first end and the second end in axial direction, have flow channel and flow pass in the described valve body, described flow channel and flow pass in axial direction extend to the valve body from described first end and described the second end respectively, described flow channel and flow pass are spaced, and, periphery wall at described valve body is formed with the throttle orifice that is communicated with described flow channel, and, form the opening that is communicated with described flow pass at the periphery wall of described valve body; And be close on the outer periphery of described valve body and cover the elastic film of described throttle orifice, described elastic film has hydrodynamic pressure in flow channel and reaches predetermined value and open described throttle orifice when above to allow fluid to flow out and hydrodynamic pressure in flow channel returns to the elastic structure of its original position to stop fluid to flow out during less than predetermined value.
According to a preferred embodiment of the present invention, it is characterized in that described elastic film is the annular cover of lock ring on described valve body outer periphery.
According to a preferred embodiment of the present invention, it is characterized in that, described control valve for fluids also comprises the ridge on the outer periphery that are arranged on valve body, described ridge is arranged on the position of close throttle orifice between described first end and the described throttle orifice, and described annular is overlapped lock ring and covered described ridge.
According to a preferred embodiment of the present invention, it is characterized in that control valve for fluids also is included in the O type seal ring near the outer periphery that are arranged on described valve body the first end of described valve body.
According to a preferred embodiment of the present invention, it is characterized in that described O type seal ring is between two adjacent ribs that are formed on the described valve body outer periphery.
According to a preferred embodiment of the present invention, it is characterized in that control valve for fluids also comprises the abutment sleeve on the outer periphery of a side of the described flow pass of formation that is arranged on described valve body.Preferably, described abutment sleeve is rubber bush.
According to a preferred embodiment of the present invention, it is characterized in that described opening is the hole that radially connects valve body along described valve body, and the diameter of described opening is greater than the diameter of throttle orifice.
According to a preferred embodiment of the present invention, it is characterized in that described elastic film is made by rubber material.
The utility model also relates to a kind of reducing agent supply module of the selective catalytic reduction system operating for motor (especially diesel engine), it is characterized in that having foregoing control valve for fluids.
The utility model also relates to a kind of selective catalytic reduction system operating for motor (especially diesel engine), it is characterized in that having foregoing reducing agent supply module.
Compare with existing control valve for fluids according to the control valve for fluids for motor SCR system of the present utility model, reduced the maintenance cost in manufacture cost and/or later stage.The utility model also can improve the sealing effect of hole when sealing of flow controller.
Description of drawings
Fig. 1 is the reducing agent supply module of the SCR system on the present motor and the schematic representation of dosage distribution module.
Fig. 2 is the perspective illustration according to control valve for fluids of the present utility model.
Fig. 3 is the plan view according to control valve for fluids of the present utility model.
Fig. 4 is the sectional view that the line I-I along among Fig. 3 according to control valve for fluids of the present utility model intercepts.
Fig. 5 illustrates the sectional view according to the state of control valve for fluids of the present utility model in being assembled to the housing of return line.
Detailed description with the accompanying drawing, purpose of the present invention and feature are with fully aware of.Yet be appreciated that the accompanying drawing that illustrates only limits for illustration rather than to scope.Will be further appreciated that accompanying drawing is not to draw in proportion, unless stated otherwise, they only are used for conceptual structure described herein and the process of exemplifying.
Embodiment
Below in conjunction with structure and the working principle of accompanying drawing detailed description according to control valve for fluids of the present utility model.
At first referring to Fig. 1, wherein, the part in the dot-dash wire frame is reducing agent supply module 2, reference character 3 expression dosage distribution module, reference character 26 expression urea boxes.Can be seen that by accompanying drawing 1 reducing agent supply module 2 comprises fluid control unit 4, pumpback pump 5, prefilter 6, main pump 7, main filter 8 and pressure transducer 9.Pipeline 21 expression urea return lines, pipeline 22 expression aspiration, pipeline 23 expressions and dosage distribution module 3 direct-connected pressure pipelines.
As shown in Figure 1, when the SCR of motor system works, aspiration 22 is supplied to dosage distribution module 3 with urea liquid through prefilter 6, main pump 7, main filter 8.Be provided with pressure transducer 9 in the pressure pipeline 23.The acting in conjunction of main pump 7 and fluid control unit 4 makes the stable pressure of maintenance in the pressure pipeline, thereby guarantees that dosage distribution module 3 has stable urea-spray speed.
On the other hand, when engine stop was worked, the urea liquid in the whole pipeline must be back in the urea box 26.At this moment, by pumpback pump 5 the urea pumpback in the pipeline is returned in the urea box 26.
In the various situations of describing, must guarantee that the urea liquid in the return line 21 can reverse flow in the above.This one-way valve by fluid control unit 4 is used for realizing.
Referring to Fig. 2-Fig. 5, the control valve for fluids 100 shown in the figure is used for the fluid control unit 4 of Fig. 1.Fig. 2-Fig. 5 (especially Fig. 4 and Fig. 5) clearly show that structure and the flow direction of urea liquid in control valve for fluids 100 of each parts of control valve for fluids 100.Fig. 5 also illustrates according to the state of control valve for fluids 100 of the present utility model in the housing 200 that is assembled to return line.
Referring to Figure 4 and 5, control valve for fluids 100 is made of valve body (or valve adapter) 114 and the elastic film 113 of being close on the valve body 114 again.Valve body 114 is longilineal cylindrical body roughly.In valve body 114, have flow channel 118 and flow pass 119.
When the hydrodynamic pressure in the pressure pipeline 23 when predetermined value is above, hydrodynamic pressure forces elastic film 113 distortion and no longer is close to throttle orifice 112 via throttle orifice 112, thereby allows fluid to flow out from throttle orifice 112.
When 5 work of pumpback pump, the pressure-acting in the return line 21 covers and closed throttle orifice 112 it in elastic film 113 better.
As known in the art, larger deformation can occur in rubber under external force, after external force is removed, can return to rapidly its original form again.Therefore, elastic film of the present utility model preferably adopts rubber material to make.The parameters such as the constituent of rubber material, thickness can be selected according to the size of the loine pressure predetermined value that sets.Alternatively, elastic film 113 can recover flexible metal or other material is made by having.
Alternatively, elastic film 113 can not be the annular cover, but only covers a part of outer periphery of valve body 114.In this case, thus elastic film 113 must the hydrodynamic pressure in return line can be out of shape when predetermined value is above and allows fluid to flow out throttle orifice and can return to its original position during less than predetermined value and stop fluid to flow out at hydrodynamic pressure.
Valve body 114 is formed with the one or more openings 116 that communicate with flow pass 119 at the periphery wall of the second end 142.Preferably, opening 116 is the holes that radially connect valve body 114 along described valve body 114, and the diameter of opening 116 is greater than the diameter of throttle orifice 112.In the present embodiment, the axial and valve body 114 of opening 116 is axial vertical.Alternatively, the axial out of plumb of the axial and valve body 114 of opening 116.
According to a preferred embodiment, on the outer periphery of valve body 114, near first end 141 places O type seal ring 115 is set.
According to a preferred embodiment, on the outer periphery of valve body 114, have flange 131 and flange 132 near first end 141 places, described O type seal ring 115 is folded between flange 131 and another flange 132.The external diameter of flange 131 and flange 132 is slightly less than the internal diameter of its chamber that cooperates.
Be appreciated that the utility model also can not arrange flange or arranges more than 2 flanges.
According to a preferred embodiment, between first end 141 on the outer periphery of valve body 114 and throttle orifice 112, be provided with ridge 130 near the position of throttle orifice 112, that is, and at the external diameter at the ridge 130 places external diameter greater than valve body 114 other positions.The effect of ridge 130 be when elastic film 113 are whens cover annular, annular cover and valve body 114 in the combination at ridge 130 places than the combination of other position tightr (combination force is larger in other words).Hydrodynamic pressure in return line is when predetermined value is above, the hydrodynamic pressure impact is opened elastic film 113 and is flowed out from throttle orifice 112, because ridge one side elastic film 113 is combined closelyr with valve body 114 outer periphery, therefore fluid is only to a side flow that is not provided with ridge 130, and the arrow among Fig. 4 and Fig. 5 clearly shows the direction of Fluid Flow in A.
In the present embodiment, ridge 130 is one with valve body 114.Alternatively, ridge 130 can be the independent parts of lock ring on valve body 114 outer periphery.Preferably, the diameter of ridge 130 gently changes.
Alternatively, ridge is not set on the outer periphery of valve body 114.
Alternatively, elastic film 113 is arranged to structure in uneven thickness, so that first portion ratio the second portion more difficult distortion throttle orifice 112 and opening 116 between of elastic film 113 between first end 141 and throttle orifice 112, the combination force with valve body 114 is larger in other words.
Alternatively, elastic film 113 is arranged to the inhomogeneous annular cover of internal diameter.The internal diameter that annular is enclosed within the first portion between first end 141 and the throttle orifice 112 is less than the internal diameter of the second portion between throttle orifice 112 and opening 116, so that the more difficult distortion of first portion, the combination force with valve body 114 is larger in other words.
Alternatively, elastic film 113 is arranged to the inhomogeneous structure of Young's modulus, namely, elastic film 113 is large at the Young's modulus at described second portion place in the modular ratio of described First office, so that elastic film 113 is larger in the combination force of its second portion place and valve body 114 at its First office ratio.The variation of the Young's modulus of elastic film 113 can be that cascade changes or gradual variation.
Alternatively, the first portion of elastic film 113 and valve body 114 contacted surfaces can add sealing gasket, sealing gasket Pasting or be arranged on the described surface in the mode of other hydraulic seal.
According to a preferred embodiment, be provided with abutment sleeve 111 in the outer periphery of the second end 142 1 sides of valve body 114.The chamber drive fit that the outer periphery of abutment sleeve 111 cooperate with it moves radially to prevent fluid control valve 110.Abutment sleeve 111 also can play the control valve for fluids 110 axially movable effects that prevent.Preferably, abutment sleeve 111 has certain length in order to reach better locating effect.
Preferably, abutment sleeve 111 is made by rubber, and its external diameter substantially equal or be slightly larger than cooperate the internal diameter of chamber so that the chamber drive fit that abutment sleeve 111 matches with it.
According to a preferred embodiment, control valve for fluids of the present utility model 110 further adopt abutment means against abutment sleeve 111 so that the first end 141 of control valve for fluids against the inwall (shown in the page left side of Fig. 5) of chamber.Can certainly abutment sleeve 111 be set and only adopt abutment means directly against the second end 142 of control valve for fluids 110 with fixing control valve for fluids 110.
Above-described embodiment has been described the basic novel features of the utility model, is understandable that those skilled in the art can carry out various omissions, replacement and change to form and the details of the device that illustrates.
Claims (10)
1. a control valve for fluids (100) is used for the selective catalytic reduction system operating of motor, it is characterized in that comprising:
Columniform valve body (114), described valve body (114) has first end (141) and the second end (142) in axial direction, have flow channel (118) and flow pass (119) in the described valve body (114), described flow channel (118) and flow pass (119) in axial direction extend to the valve body (114) from described first end (141) and described the second end (142) respectively, described flow channel (118) is spaced with flow pass (119), and, periphery wall at described valve body (114) is formed with the throttle orifice (112) that is communicated with described flow channel (118), and, form the opening (116) that is communicated with described flow pass (119) at the periphery wall of described valve body (114); And
Be close on the outer periphery of described valve body (114) and cover the elastic film (113) of described throttle orifice (112), described elastic film (113) has hydrodynamic pressure in flow channel and reaches predetermined value and open described throttle orifice (112) when above to allow fluid to flow out and hydrodynamic pressure in flow channel returns to the elastic structure of its original position to stop fluid to flow out during less than predetermined value.
2. control valve for fluids as claimed in claim 1 is characterized in that, described elastic film (113) is the annular cover of lock ring on described valve body (114) outer periphery.
3. control valve for fluids as claimed in claim 1 or 2, it is characterized in that the first portion of described elastic film (113) between described first end (141) and throttle orifice (112) is larger than the combination force of the second portion between throttle orifice (112) and opening (116) and described valve body (114).
4. control valve for fluids as claimed in claim 2, it is characterized in that, also comprise the ridge (130) on the outer periphery that are arranged on valve body (114), described ridge (130) is arranged on the position of close throttle orifice (112) between described first end (141) and the described throttle orifice (112), and described annular is overlapped lock ring and covered described ridge (130).
5. control valve for fluids as claimed in claim 1 or 2, it is characterized in that, the part of described elastic film (113) between described first end (141) and throttle orifice (112) is first portion, described first portion is provided with sealing gasket with the contacted surface of valve body (114), and described sealing gasket is arranged on the described surface in the mode of hydraulic seal.
6. control valve for fluids as claimed in claim 3 is characterized in that, elastic film (113) is arranged to structure in uneven thickness or the inhomogeneous structure of Young's modulus.
7. control valve for fluids as claimed in claim 1 or 2 is characterized in that, also comprises the abutment sleeve (111) on the outer periphery of a side of the described flow pass of formation (119) that is arranged on described valve body (114).
8. control valve for fluids as claimed in claim 1 or 2 is characterized in that, described elastic film (113) is made by rubber material.
9. a reducing agent supply module that is used for the selective catalytic reduction system operating of motor is characterized in that having such as the described control valve for fluids of any one among the claim 1-8.
10. a selective catalytic reduction system operating that is used for motor is characterized in that having reducing agent supply module as claimed in claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201507762U CN203239429U (en) | 2013-03-29 | 2013-03-29 | Fluid control valve as well as reducing agent supply module and SCR (semiconductor control rectifier) system with same |
| DE201410200985 DE102014200985A1 (en) | 2013-03-29 | 2014-01-21 | Fluid control valve and reducing agent supply device and SCR system with the such |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201507762U CN203239429U (en) | 2013-03-29 | 2013-03-29 | Fluid control valve as well as reducing agent supply module and SCR (semiconductor control rectifier) system with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203239429U true CN203239429U (en) | 2013-10-16 |
Family
ID=49316738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201507762U Expired - Lifetime CN203239429U (en) | 2013-03-29 | 2013-03-29 | Fluid control valve as well as reducing agent supply module and SCR (semiconductor control rectifier) system with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203239429U (en) |
| DE (1) | DE102014200985A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542151A (en) * | 2013-10-21 | 2014-01-29 | 北京天地玛珂电液控制系统有限公司 | Hydraulic-control switch throttle valve |
| US11008915B2 (en) | 2019-03-20 | 2021-05-18 | Caterpillar Inc. | Diesel exhaust fluid tank freeze mitigation |
-
2013
- 2013-03-29 CN CN2013201507762U patent/CN203239429U/en not_active Expired - Lifetime
-
2014
- 2014-01-21 DE DE201410200985 patent/DE102014200985A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542151A (en) * | 2013-10-21 | 2014-01-29 | 北京天地玛珂电液控制系统有限公司 | Hydraulic-control switch throttle valve |
| US11008915B2 (en) | 2019-03-20 | 2021-05-18 | Caterpillar Inc. | Diesel exhaust fluid tank freeze mitigation |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014200985A1 (en) | 2014-10-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131016 |
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| CX01 | Expiry of patent term |