CN202402109U - Reducing agent supply module for vehicle and shell of reducing agent supply module - Google Patents
Reducing agent supply module for vehicle and shell of reducing agent supply module Download PDFInfo
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- CN202402109U CN202402109U CN2012200201204U CN201220020120U CN202402109U CN 202402109 U CN202402109 U CN 202402109U CN 2012200201204 U CN2012200201204 U CN 2012200201204U CN 201220020120 U CN201220020120 U CN 201220020120U CN 202402109 U CN202402109 U CN 202402109U
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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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Abstract
The utility model discloses a reducing agent supply module for a vehicle. The reducing agent supply module comprises a reducing agent supply line for supplying a reducing agent from a reducing agent tank of a reducing system to a metering and spraying module and a reducing agent clearing line for conveying the residual reducing agent from the metering and spraying module to the reducing agent tank, wherein the reducing agent supply line comprises a main pump, a reducing agent input pipeline and a reducing agent output pipeline; the main pump is respectively connected with the reducing agent tank and the metering and spraying module through the reducing agent input pipeline and the reducing agent output pipeline; and the reducing agent clearing line comprises a clearing pump, a clearing pump output pipeline and a clearing pump input pipeline; and the clearing pump is respectively connected with the reducing agent tank and the metering and spraying module through clearing pump output pipeline and the clearing pump input pipeline. The utility model also discloses a shell of the reducing agent supply module. The pipelines of the reducing agent supply module are simply distributed.
Description
Technical field
The utility model relates to a kind of vehicle especially the reducing agent supply module and housing thereof of diesel-engine road vehicle of being used for.
Background technique
In order to reduce the harmful components in the vehicle motor tail gas, can adopt the appropriate postprocessing technology, reduce with the harmful gas amount that motor is discharged.For example, SCR (SCR) system is a kind of effective motor exhaust after-treatment system, and it can utilize selective catalytic reduction to reduce the NOx in the tail gas more than 50%.As shown in Figure 1, the reducing agent supply section of a kind of existing SCR system comprises: reducing agent jar 2, and it is storing the urea liquid as reducing agent; Metered injection module 8, it is used for urea liquid is ejected into engine exhaust pipe with accurate amount; And the reducing agent supply module, it is connected between reducing agent jar 2 and the metered injection module 8.This reducing agent supply module mainly comprises: main pump 6, and it links to each other with reducing agent jar 2 through reducing agent intake line L1, and links to each other with metered injection module 8 through reducing agent output pipe L2; Selector valve 4, it is connected between input, output port and pipeline L1, the L2 of main pump 6; Prefilter 12, it is arranged among the reducing agent intake line L1; Main filter 14, it is arranged among the reducing agent output pipe L2.Through the operation of selector valve 4, main pump 6 optionally from reducing agent jar 2 to metered injection module 8 supply urea liquids, and from metered injection module 8 to reducing agent jar 2 reverse transport urea solution (avoiding urea liquid to remain in the metered injection module 8).
In addition, above-mentioned reducing agent supply module also comprises: throttling one-way valve 16, and it is being connected reducing agent jar 2 and metered injection module 8 respectively through backflow output pipe L3 with backflow intake line L4; Be arranged in the return filter 18 among the backflow intake line L4; Pressure transducer 20, it is connected on the backflow intake line L4, in order to detect backflow intake line L4, in fact also to be the pressure of the input end of metered injection module 8.16 on one-way valve allow urea liquid from backflow intake line L4 towards backflow output pipe L3 one-way flow.
Each element in this reducing agent supply module carry/is formed by a housing (not shown).Particularly, pipeline L1-L4 is formed on enclosure interior, and main filter 14, prefilter 12, return filter 18, one-way valve 16 are installed in the housing, and pressure transducer 20, main pump 6, selector valve 4 are installed on the housing.Consider the line arrangement of main pump, selector valve and housing, main pump is imported and exported pipeline and is needed to link to each other with selector valve, and selector valve must link to each other with the housing pipeline.And main pump and selector valve need be fixed on the housing simultaneously.Need consider factors such as runner thawing at low temperatures, overall cost simultaneously, selector valve need be installed in below the main pump.This layout makes that the distribute overall dimensions of complicacy comparatively and reducing agent supply module of the pipeline in the housing is bigger.
The model utility content
The utility model is intended to simplify the overall dimensions that pipeline in the housing of reducing agent supply module of vehicle selective catalytic reduction system operating distributes and reduces the reducing agent supply module.
An aspect according to the utility model; A kind of reducing agent supply module (device) that is used for vehicle is provided; It comprises: supply circuit from the reducing agent jar of restoring system to the reducing agent of metered injection module supply reducing agent, it comprises main pump and reducing agent intake line and reducing agent output pipe that main pump and said reducing agent jar and metered injection module are linked to each other respectively; And carry the reducing agent cleaning circuit of remaining reducing agent to said reducing agent jar from said metered injection module, it comprises the cleaning pump and will clear up the cleaning pump main road that pump and said reducing agent jar and metered injection module link to each other respectively and clear up the pump intake line.
According to a kind of preferred implementation; Said reducing agent supply module also comprises makes said main pump turn back to the reducing agent reflux line of reducing agent jar at least a portion of the reducing agent of metered injection module supply, and said reducing agent reflux line comprises throttling one-way valve and backflow output pipe and backflow intake line that said one-way valve and said reducing agent jar and metered injection module are linked to each other respectively.
According to a kind of preferred implementation, said reducing agent supply module also comprises housing, and it is carrying said reducing agent supply circuit, reducing agent cleaning circuit and reducing agent reflux line.
In said reducing agent intake line, reducing agent output pipe, cleaning pump main road, cleaning pump intake line, backflow output pipe and the backflow intake line at least some are formed in the said housing.
Said main pump, cleaning pump, throttling one-way valve are installed on the said housing.
According to a kind of preferred implementation, be formed with the reducing agent output port that the reducing agent input port that is used for linking to each other with the reducing agent jar returns port and is used for linking to each other with the metered injection module with reducing agent on the said housing.
According to a kind of preferred implementation; Said reducing agent intake line leads to said reducing agent input port; Said reducing agent output pipe, backflow intake line and cleaning pump intake line lead to said reducing agent output port, and said backflow output pipe leads to said reducing agent with cleaning pump main road and returns port.
According to a kind of preferred implementation, said reducing agent supply module also is included in the prefilter that is connected in the housing in the reducing agent intake line and in housing, is connected the main filter in the reducing agent output pipe.
According to a kind of preferred implementation, said reducing agent supply module also comprises the return filter that is arranged in the backflow intake line.
According to a kind of preferred implementation, said reducing agent supply module also comprises and is installed on the said housing and the pressure transducer that links to each other with said reducing agent output pipe.
According to a kind of preferred implementation, said main pump has the one-way valve that only allows reducing agent to flow to the direction of metered injection module from said reducing agent jar.
According to a kind of preferred implementation, said cleaning pump has stop valve, and has working position and the rest position that can switch each other; Between said main pump on-stream period, said cleaning pump is positioned at rest position, wherein clears up the pump main road and links to each other with the port of stop valve with cleaning pump intake line; After said main pump running finished, said cleaning pump switched to the working position.
The utility model relates to a kind of reducing agent supply module housing that is used for vehicle on the other hand at it, and it comprises: the reducing agent input port, the reducing agent that are formed on the housing return port, reducing agent output port, main pump interface, cleaning pump interface; Be formed on the reducing agent intake line between reducing agent input port and the main pump interface that is connected in the housing; Be formed on the reducing agent output pipe between main pump interface and the reducing agent output port that is connected in the housing; The reducing agent that is connected that is formed in the housing returns backflow output pipe and backflow intake line between port and the reducing agent output port, and said backflow output pipe and backflow intake line communicate with each other; The reducing agent that is connected that is formed in the housing returns the cleaning pump main road between port and the cleaning pump interface; And be formed on the cleaning pump intake line between cleaning pump interface and the reducing agent output port that is connected in the housing.
According to a kind of preferred implementation, said reducing agent supply module housing also comprises the pressure sensor interface that is arranged on the said housing, and it is communicated with said reducing agent output pipe.
According to a kind of preferred implementation; Said reducing agent supply module housing also comprises main filter cavity volume; It is arranged in the said housing in said reducing agent output pipe, and said main pump interface, pressure sensor interface, cleaning pump interface are arranged in the position facing to said main filter cavity volume.
According to the underground design of the reducing agent supply module of the utility model, be provided with the reducing agent supply circuit that comprises main pump and comprise that the reducing agent of clear up pump clears up circuit.These two circuits are arranged apart from each other, but not as the single reducing agent supply/cleaning circuit of describing in the background technique of front that switches by means of selector valve.Therefore, more flexible according to the concrete layout of the underground of the reducing agent supply module of the utility model, thus easily the reducing agent supply module is designed with less overall dimensions.
Further say; Can all be placed in the corresponding position of main filter cavity volume with main filter according to the main pump in the reducing agent supply module of the utility model, pressure transducer, cleaning pump; Therefore the pipeline distribution in the housing of reducing agent supply module can be more simple, and the structure of whole reducing agent supply module can be more compact.
Description of drawings
Fig. 1 is the schematic representation according to the reducing agent supply section of a kind of SCR system of existing technology.
Fig. 2 is the schematic representation according to the reducing agent supply section of the SCR system of a mode of execution of the utility model.
Fig. 3 is the schematic perspective view of the reducing agent supply module of SCR shown in Figure 2 system, has shown housing and the main pump that will on this housing, assemble, pressure transducer and the cleaning pump of reducing agent supply module.
Fig. 4 is the front view of housing shown in Figure 3.
Fig. 5 is the plan view of housing shown in Figure 3.
Fig. 6 is the worm's eye view of housing shown in Figure 3.
Fig. 7 is the A-A sectional view that direction is done in Fig. 4.
Fig. 8 is the B-B sectional view that direction is done in Fig. 5.
Fig. 9 is the C-C sectional view that direction is done in Fig. 5.
Figure 10 is the D-D sectional view that direction is done in Fig. 5.
Figure 11 is the enlarged view of Figure 10, and has shown return filter and the throttling one-way valve that is installed in the housing.
Embodiment
The preferred implementation of the utility model is described with reference to the accompanying drawings.
Illustrated among Fig. 2 according to the mode of execution of the utility model be used for the especially reducing agent supply section of the selective catalytic reduction system operating of diesel-engine road vehicle of vehicle, it comprises: reducing agent jar 2, it is storing for example urea liquid (like AdBlue) of reducing agent; Metered injection module 8, it is used for reducing agent is ejected into engine exhaust pipe with accurate amount, generates the innoxious substance (NH that at high temperature decomposites of urea liquid for example so that the harmful components in reducing agent and the Vehicular exhaust react
3React under the effect of catalyzer with NOx in the tail gas and generate N
2And H
2O); And reducing agent supply module (device), it is connected between reducing agent jar 2 and the metered injection module 8.
This reducing agent supply module mainly comprises three fluid power circuits of housing 30 (not shown in Fig. 2, please referring to Fig. 3-11, and will be described in detail later) and related setting with housing.These three fluid power circuits are formed at least in part in the housing and/or by housing and carry.
Article one, the fluid power circuit is a reducing agent supply circuit; It mainly comprises: the main pump 6 of band one-way valve; It links to each other with reducing agent jar 2 through the reducing agent intake line L1 pipeline L7 outer with being positioned at housing that is formed in the housing; And link to each other with metered injection module 8 through the reducing agent output pipe L2 pipeline L9 outer that is formed in the housing with being positioned at housing; Pipeline L7 connects with reducing agent intake line L1 through the reducing agent input port P1 that is formed on the housing, and pipeline L9 connects with reducing agent output pipe L2 through the reducing agent output port P2 that is formed on the housing; In reducing agent intake line L1, be arranged in the prefilter 12 at main pump 6 upper reaches; In reducing agent output pipe L2, be arranged in the main filter 14 in main pump 6 downstream.
Article one, the fluid power circuit is used for during engine running, supplying reducing agents from reducing agent jar 2 to metered injection module 8.Particularly, when main pump 6 runnings, the reducing agent in the reducing agent jar 2 is fed to metered injection module 8 through pipeline L7, L1, L2, L9 successively by main pump 6 suctions.Main pump 6 make that with the orientation of one-way valve article one fluid power circuit only allows reducing agent to flow to metered injection module 8 from reducing agent jar 2, and does not allow to flow to reducing agent jar 2 from metered injection module 8.
Behind engine stoping operation, main pump 6 shuts down, thereby stops from reducing agent jar 2 to metered injection module 8 supply reducing agents.
Second fluid power circuit is reducing agent cleaning (pumpback) circuit; It mainly comprises: cleaning (pumpback) pump 24 of band stop valve 22; It links to each other with reducing agent jar 2 through the cleaning pump main road L5 pipeline L8 outer with being positioned at housing that is formed in the housing; And being communicated with (promptly clearing up pump intake line L6 is communicated with the reducing agent output pipe tract in the main filter of being positioned at of reducing agent output pipe L2 14 downstream) with the discharge side of main filter 14 through being formed on the cleaning pump intake line L6 in the housing, pipeline L8 returns port P3 and connects with cleaning pump main road L5 through being formed on reducing agent on the housing.
Behind engine stoping operation, main pump 6 also shuts down, and cleaning pump 24 switches to its working position, and clears up pump 24 runnings and aspirate reducing agents from metered injection module 8 to reducing agent jar 2.Particularly, when 24 runnings of cleaning pump, the residual reducing agent in the metered injection module 8 tract, L6, L5, the L8 of L9, L2 by the road returns in the reducing agent jar 2, to prevent having residual reducing agent in the metered injection module 8.
, engine running need the residual reducing agent in the metered injection module 8 be drawn back reducing agent jar 2 sometimes after finishing.This be because, behind the motor end of run, exhaust system temperature descends, and reducing agent at low temperatures may be in the metered injection module crystallization or frost, and this possibly cause SCR thrashing.Through adopting special reducing agent cleaning circuit, solved the residual problem of reducing agent in the metered injection module.
Article three, the fluid power circuit is the reducing agent reflux line; It mainly comprises: throttling one-way valve (one-way valve of band throttle orifice) 16; Its two ends are connecting backflow output pipe L3 and the backflow intake line L4 that is formed in the housing; Backflow output pipe L3 and cleaning pump main road L5 junction (promptly be connected to reducing agent and return port P3); Backflow intake line L4 joins (promptly also be communicated with the discharge side of main filter 14, also just be communicated with the reducing agent output pipe tract that is positioned at main filter 14 downstream) with cleaning pump intake line L6; Be arranged in the return filter 18 among the backflow intake line L4.
The orientation of one-way valve 16 be arranged to only allow reducing agent from backflow intake line L4 towards backflow output pipe L3 one-way flow.Through throttling one-way valve 16, main pump 6 is back in the reducing agent jar 2 to the part of the reducing agent of metered injection module 8 conveyings, keep the input end pressure of metered injection module 8 simultaneously.
In addition; This reducing agent supply module also comprises pressure transducer 20; It is connected on the reducing agent output pipe L2; In order to the tract that detects reducing agent output pipe L2, in fact also be the pressure of the input end of metered injection module 8, and pressure detecting signal is sent to the control unit (not shown) of SCR system.
Show the housing 30 of above-mentioned reducing agent supply module among Fig. 3 and will be assembled into main pump 6, pressure transducer 20 and the cleaning pump 24 on the housing 30.The details of housing 30 is shown in Fig. 4-11.
As shown in Figure 3, it is roughly rectangular-shaped that housing 30 is, and is suitable for being installed on the vehicle in its bottom surface.For this reason, be formed with the assembly department 60 that is used to attach it on the vehicle on the housing 30, for example be used for the mounting hole that fastener passes perpendicular to what extended the housing bottom surface.Referring to Fig. 5,6, the quantity of assembly department 60 is 3.Be appreciated that the assembly department that also can adopt other quantity or mounting structure of other form etc.
In addition, can see from Fig. 3 that the reducing agent input port P1 shown in Fig. 2, reducing agent output port P2, reducing agent return port P3 and become a row to be parallel to the housing bottom surface and stretch out from a vertical side of housing in parallel with each other.The enclosure interior pipeline that links to each other with these ports is formed in the housing 30.Distribution and they of these ports and the position relation of cover plate mounting interface 50 have also been clearly illustrated among Fig. 5-7.
The upside of housing 30 is formed with the main pump interface 52 that is used to install main pump 6, be used for the pressure sensor interface 54 of setting pressure sensor 20 and be used to install the cleaning pump interface 56 of cleaning pump 24.Main pump 6 is fixed on the main pump interface 52 through the screw 34 that is screwed in the screw thread fixed base 36 on the housing 30.Pressure transducer 20 is fixed on the pressure sensor interface 54 through the screw 40 that is screwed in the screw thread fixed base 42 on the housing 30.Cleaning pump 24 is fixed on the cleaning pump interface 56 through the screw 46 that is screwed in the screw thread fixed base 48 on the housing 30.
Main filter cavity volume is opened on a transverse side of housing 30, and this transverse side is adjacent with the vertical side that is provided with port P1-P3.The opening of main filter cavity volume constitutes cover plate mounting interface 50, and for example the helical mounting interface is used to install the cover plate (not shown) to seal main filter cavity volume 66.
The front view that has shown housing 30 among Fig. 4 has wherein clearly illustrated the front shape of main filter cavity volume 66.Main filter cavity volume 66 is formed in the housing 30; And has the cover plate mounting interface 50 that is positioned on the housing transverse side; Main filter 14 is inserted in the main filter cavity volume 66, and the cover plate (not shown) that is used to seal main filter cavity volume 66 is fixed on cover plate mounting interface 50.Reducing agent from reducing agent jar 2 is introduced the main filter of passage 64 entering 14 inside through the main filter that is formed in the housing 30; The outside of runner master filter 14 after the filter media in main filter 14 promptly arrives in the space between main filter 14 outsides and main filter cavity volume 66 inwalls.
The plan view that has shown housing 30 among Fig. 5 has wherein shown 6 tapped hole shaped shell cover assembly departments 58 of housing 30 upsides.The quantity and the structure that are appreciated that case cover assembly department 58 are not limited thereto.
Also shown the distribution of main pump interface 52, pressure sensor interface 54, cleaning pump interface 56 and respective threads fixed base 36,42,48 among Fig. 5.
Shown main pump discharge passage 76 among Fig. 5,7,8, main pump 14 extracts the reducing agent in the reducing agent jar 2 through reducing agent input port P1, and reducing agent is discharged in the main pump discharge passage 76.Main pump discharge passage 76 is introduced passage 64 with main filter and is linked to each other, and the two has constituted the reducing agent output pipe Upstream section that is positioned at main filter 14 upper reaches of reducing agent output pipe L2.
The introducing passage 82 and the discharge route 84 that have shown cleaning pump 24 among Fig. 5,10,11.Introduce passage 82 and constitute aforementioned cleaning pump intake line L6, it leads to the space between main filter 14 outsides and main filter cavity volume 66 inwalls.Discharge route 84 leads to reducing agent and returns port P3, thereby constitutes the part of aforementioned cleaning pump main road L5.
Sectional view among Fig. 7-11 has shown the internal structure details of housing 30.Like Fig. 7, shown in 8, constitute aforementioned reducing agent intake line L1 from reducing agent input port P1 to the inboard input channel of extending 68 of housing, it leads to the main pump intake in the housing 30.Be formed with the prefilter installation interface in the input channel 68, be used for prefilter 12 is installed on wherein.
Like Fig. 7, shown in 9, constitute the reducing agent output pipe tract that is positioned at main filter 14 downstream from reducing agent output port P2 to the inboard output channel of extending 70 of housing, it leads to the space between main filter 14 outsides and main filter cavity volume 66 inwalls.Also shown the pressure sensor interface 54 that is used for setting pressure sensor 20 among Fig. 9, it is communicated with output channel 70 through pressure transducer passage 80.
Like Fig. 7, shown in 10, return port P3 from reducing agent and constitute aforementioned backflow output pipe L3 to the inboard return passage that extends 72 of housing, also constituted the part of cleaning pump main road L5 simultaneously.Be provided with the installation interface of throttling one-way valve 16 and return filter 18 in the return passage 72.Shown in figure 11, one-way valve 16 is installed in series in return passage 72 with return filter 18.The inner periphery of return filter 18 seals through O type ring 86 and forming in interior week of return passage 72.The inner of return passage 72 is communicated with introducing passage 82 through the passage that constitutes an aforementioned backflow intake line L4 part.Like this, on the one hand, the reducing agent in the space between main filter 14 outsides and main filter cavity volume 66 inwalls can pass through introduces passage 82 inflow return filters 18 and throttling one-way valve 16, returns port P3 row to reducing agent jar 2 by reducing agent then.On the other hand, the reducing agent in the space between main filter 14 outsides and main filter cavity volume 66 inwalls can be extracted by cleaning pumps 24 through introducing passage 82, returns port P3 and arranges to reducing agent jar 2 through discharge route 84, return passage 72 and reducing agent again.
Rubber system balancing component (equalizing element, not shown) can be installed in main filter cavity volume 66, be used to compensate reducing agent pressure surge and the serviceability that improves under the freezing point pressure (ice-pressure).
In addition, can in its outside the heater (not shown) be installed around main filter cavity volume 66, it is worked when ambient temperature low excessively (for example being lower than-11 ℃), to guarantee reducing agent supply module proper functioning.Heater can be installed on the housing through modes such as ultra-sonic welded, laser bonding, rivet hot, clamping, buckles.
In addition, in the housing lead frame (not shown) can be installed, it comprises plastics bearing part, plain conductor and tenminal block, is used for each electric elements of reducing agent supply module is connected with the control unit of SCR system.Lead frame can be fixed in the housing through modes such as ultra-sonic welded.
Hydraulic element in the reducing agent supply module all pass through seal element such as O type ring, elastomer diaphragm and realize sealing with housing.
Employing can reduce the NOx in the motor exhaust more than 80% according to the reducing agent supply module of the utility model.
In the mode of execution that illustrates and describes in front, (the pipeline L1～L6) all be formed in the housing for example of each pipeline in reducing agent supply circuit, reducing agent cleaning circuit and the reducing agent reflux line.Yet according to another mode of execution of the application, some in these pipelines can be formed in the housing, and other can be made up of the pipe fitting of housing outside.
In addition, in this application, the pipeline that is formed in the housing had both comprised the pipeline that is formed entirely in the housing, also comprised the pipeline that partly is formed in the housing.
According to the fluid power circuit arrangement in the reducing agent supply module of the utility model, be provided with reducing agent supply circuit and separated reducing agent cleaning circuit.Therefore, more flexible according to the concrete layout of the underground of the reducing agent supply module of the utility model, thus easily the reducing agent supply module is designed with less overall dimensions.
In addition; Further say; Can be placed in the corresponding position of main filter cavity volume of main filter adjacent to each other according to the main pump in the reducing agent supply module of the utility model, pressure transducer, cleaning pump; Therefore the pipeline distribution in the housing of reducing agent supply module can be more simple, and the structure of whole reducing agent supply module can be more compact, and be convenient to be connected with other element of SCR system.
Though the concrete mode of execution of reference is here described and has been described the utility model, in the details shown in the scope of the utility model is not limited to.Under the situation of the basic principle that does not depart from the utility model, can make various modifications to these details.
Claims (12)
1. a reducing agent supply module that is used for vehicle is characterized in that, comprising:
Supply circuit from the reducing agent jar of restoring system to the reducing agent of metered injection module supply reducing agent, it comprises main pump (6) and reducing agent intake line (L1) and reducing agent output pipe (L2) that main pump and said reducing agent jar and metered injection module are linked to each other respectively; And
Carry the reducing agent cleaning circuit of remaining reducing agent from said metered injection module to said reducing agent jar, it comprises cleaning pump (24) and will clear up the cleaning pump main road (L5) that pump and said reducing agent jar and metered injection module link to each other respectively and clear up pump intake line (L6).
2. reducing agent supply module as claimed in claim 1; It is characterized in that; Also comprise making said main pump turn back to the reducing agent reflux line of reducing agent jar at least a portion of the reducing agent of metered injection module supply, said reducing agent reflux line comprises throttling one-way valve (16) and backflow output pipe (L3) and backflow intake line (L4) that said one-way valve and said reducing agent jar and metered injection module are linked to each other respectively.
3. reducing agent supply module as claimed in claim 2 is characterized in that, also comprises housing (30), and it is carrying said reducing agent supply circuit, reducing agent cleaning circuit and reducing agent reflux line.
4. reducing agent supply module as claimed in claim 3; It is characterized in that at least some in said reducing agent intake line (L1), reducing agent output pipe (L2), cleaning pump main road (L5), cleaning pump intake line (L6), backflow output pipe (L3) and the backflow intake line (L4) are formed in the said housing.
5. reducing agent supply module as claimed in claim 4 is characterized in that, said main pump (6), cleaning pump (24), throttling one-way valve (16) are installed on the said housing.
6. like each described reducing agent supply module among the claim 3-5; It is characterized in that; Be formed with the reducing agent output port (P2) that the reducing agent input port (P1) that is used for linking to each other with the reducing agent jar and reducing agent return port (P3) and be used for linking to each other with the metered injection module on the said housing; Wherein, Said reducing agent intake line (L1) leads to said reducing agent input port (P1), and said reducing agent output pipe (L2), backflow intake line (L4) and cleaning pump intake line (L6) lead to said reducing agent output port (P2), and said backflow output pipe (L3) and cleaning pump main road (L5) are led to said reducing agent and returned port (P3).
7. like each described reducing agent supply module among the claim 3-5; It is characterized in that, also be included in the prefilter (12) that is connected in the housing in the reducing agent intake line (L1) and in housing, be connected the main filter (14) in the reducing agent output pipe (L2).
8. reducing agent supply module as claimed in claim 7 is characterized in that, also comprises the return filter (18) that is arranged in the backflow intake line (L4).
9. like each described reducing agent supply module among the claim 1-5, it is characterized in that said main pump (6) has the one-way valve that only allows reducing agent to flow to the direction of metered injection module from said reducing agent jar.
10. like each described reducing agent supply module among the claim 1-5, it is characterized in that said cleaning pump (24) has stop valve (22), and have working position and the rest position that to switch each other; Between said main pump on-stream period, said cleaning pump is positioned at rest position, wherein clears up pump main road (L5) and links to each other with the port of stop valve with cleaning pump intake line (L6); After said main pump running finished, said cleaning pump switched to the working position.
11. a reducing agent supply module housing that is used for vehicle is characterized in that, comprising: the reducing agent input port (P1), the reducing agent that are formed on the housing return port (P3), reducing agent output port (P2), main pump interface (52), cleaning pump interface (56);
Be formed on the reducing agent intake line (L1) between reducing agent input port (P1) and the main pump interface (52) that is connected in the housing;
Be formed on the reducing agent output pipe (L2) between main pump interface (52) and the reducing agent output port (P2) that is connected in the housing;
The reducing agent that is connected that is formed in the housing returns backflow output pipe (L3) and backflow intake line (L4) between port (P3) and the reducing agent output port (P2), and said backflow output pipe (L3) and backflow intake line (L4) communicate with each other;
The reducing agent that is connected that is formed in the housing returns the cleaning pump main road (L5) between port (P3) and the cleaning pump interface (56); And
Be formed on the cleaning pump intake line (L6) between cleaning pump interface (56) and the reducing agent output port (P2) that is connected in the housing.
12. reducing agent supply module housing as claimed in claim 11; It is characterized in that; Also comprise main filter cavity volume (66); It is arranged in the said housing in said reducing agent output pipe (L2), and said main pump interface (52), pressure sensor interface (54), cleaning pump interface (56) are arranged in the position facing to said main filter cavity volume (66).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200201204U CN202402109U (en) | 2012-01-17 | 2012-01-17 | Reducing agent supply module for vehicle and shell of reducing agent supply module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200201204U CN202402109U (en) | 2012-01-17 | 2012-01-17 | Reducing agent supply module for vehicle and shell of reducing agent supply module |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953787A (en) * | 2012-11-28 | 2013-03-06 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Dual-pump type reducer jetting and supplying device |
| CN103291423A (en) * | 2013-06-13 | 2013-09-11 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Reducing-agent supply device |
| CN103797195A (en) * | 2013-09-25 | 2014-05-14 | 株式会社小松制作所 | Operating vehicle |
| CN103898939A (en) * | 2012-12-26 | 2014-07-02 | 住友建机株式会社 | Construction machine and control method thereof |
| CN106574535A (en) * | 2014-08-15 | 2017-04-19 | 罗伯特·博世有限公司 | Diesel exhaust fluid delivery system with pressure control |
| CN109209587A (en) * | 2017-06-30 | 2019-01-15 | 罗伯特·博世有限公司 | Method for calibrating the pressure sensor in SCR system |
| WO2021073536A1 (en) * | 2019-10-18 | 2021-04-22 | 上海船用柴油机研究所 | System and method for urea supply and injection for ship |
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2012
- 2012-01-17 CN CN2012200201204U patent/CN202402109U/en not_active Expired - Lifetime
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|---|---|---|---|---|
| CN102953787A (en) * | 2012-11-28 | 2013-03-06 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Dual-pump type reducer jetting and supplying device |
| CN103898939B (en) * | 2012-12-26 | 2018-07-24 | 住友建机株式会社 | Construction machinery and its control method |
| CN103898939A (en) * | 2012-12-26 | 2014-07-02 | 住友建机株式会社 | Construction machine and control method thereof |
| CN103291423A (en) * | 2013-06-13 | 2013-09-11 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Reducing-agent supply device |
| CN103797195A (en) * | 2013-09-25 | 2014-05-14 | 株式会社小松制作所 | Operating vehicle |
| CN103797195B (en) * | 2013-09-25 | 2016-09-28 | 株式会社小松制作所 | Working truck |
| CN106574535A (en) * | 2014-08-15 | 2017-04-19 | 罗伯特·博世有限公司 | Diesel exhaust fluid delivery system with pressure control |
| CN106574535B (en) * | 2014-08-15 | 2019-04-30 | 罗伯特·博世有限公司 | Diesel engine vent gas treatment fluid transportation system with pressure control |
| US10669911B2 (en) | 2014-08-15 | 2020-06-02 | Robert Bosch Gmbh | Diesel exhaust fluid delivery system with pressure control |
| CN109209587A (en) * | 2017-06-30 | 2019-01-15 | 罗伯特·博世有限公司 | Method for calibrating the pressure sensor in SCR system |
| CN109209587B (en) * | 2017-06-30 | 2021-11-30 | 罗伯特·博世有限公司 | Method for calibrating a pressure sensor in an SCR system |
| WO2021073536A1 (en) * | 2019-10-18 | 2021-04-22 | 上海船用柴油机研究所 | System and method for urea supply and injection for ship |
| CN114483262A (en) * | 2021-12-29 | 2022-05-13 | 潍柴动力股份有限公司 | Urea pump, and control method and control system for urea pump |
| WO2023125819A1 (en) * | 2021-12-29 | 2023-07-06 | 潍柴动力股份有限公司 | Urea pump, and control method and control system for urea pump |
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| C14 | Grant of patent or utility model | ||
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| C56 | Change in the name or address of the patentee |
Owner name: BOSCH AUTOMATIVE DISEL SYSTEM CO., LTD. Free format text: FORMER NAME: BOSCH AUTOMOTIVE DIESEL OIL SYSTEM CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 214028 Xinhua Road national hi tech Industrial Development Zone, Jiangsu, China, No. 17, No. Patentee after: BOSCH AUTOMOTIVE DIESEL SYSTEMS CO., LTD. Address before: 214028 Xinhua Road national hi tech Industrial Development Zone, Jiangsu, China, No. 17, No. Patentee before: Bosch Automotive Diesel Oil System Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214028 No.17 Xinhua Road, national high tech Industrial Development Zone, Wuxi City, Jiangsu Province Patentee after: Bosch powertrain Co.,Ltd. Address before: 214028 No.17 Xinhua Road, national high tech Industrial Development Zone, Wuxi City, Jiangsu Province Patentee before: Bosch Automotive Diesel Systems Co.,Ltd. |
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Granted publication date: 20120829 |