CN207598324U

CN207598324U - Integrating device and its exhaust gas aftertreatment system

Info

Publication number: CN207598324U
Application number: CN201721495835.4U
Authority: CN
Inventors: 杨振球; 樊高峰; 彭威波; 王学良; 宋红卫
Original assignee: Tenneco Suzhou Emission System Co Ltd
Current assignee: Tenneco Suzhou Emission System Co Ltd
Priority date: 2017-03-20
Filing date: 2017-11-10
Publication date: 2018-07-10
Anticipated expiration: 2027-11-10
Also published as: CN108625939A; WO2018171216A1

Abstract

A kind of integrating device pumped with nozzle, including pump group part and nozzle assembly.The pump group part includes motor case assembly, magnetic force shade assembly and pump case assembly.The motor case assembly includes electro-magnetic shielding cover and electrical-coil.The motor case assembly is fixed together with the pump case assembly by way of rolling or welding.The pump case assembly includes pumping the access road and exit passageway that connect with described, and the exit passageway is connected with the nozzle assembly.The pump case assembly further includes intermeshing first gear component and second gear component.The integrating device further includes the fluid media (medium) return line being connected with the nozzle assembly, and overflow element is equipped in the fluid media (medium) return line.The integrating device of the utility model is simple in structure, compact, and control is accurate higher.In addition, the utility model further relates to a kind of exhaust gas aftertreatment system.

Description

Integrating device and its exhaust gas aftertreatment system

Technical field

The utility model is related to a kind of integrating device and its exhaust gas aftertreatment systems, belong to motor exhaust post-processing technology Field.

Background technology

It is more and more tighter with the discharge standard of internal-combustion engines vehicle, in order to reduce the harmful substances such as oxynitrides in exhaust, The post-processing technology of industry generally use is selective catalytic reduction (SCR) at present, and installs in the upstream of SCR and sprayed into exhaust Penetrate urea liquid.Hydrolysis occurs for urea liquid, pyrolysis generates ammonia, and is chemically reacted with oxynitrides etc., and then drops The concentration of low harmful substance.

Urea injection system currently on the market generally includes air assist system and non-air auxiliary system.Certainly, nothing By which kind of system include urea box assembly, be connected by low pressure pipeline with the urea box assembly pump feed unit, pass through The nozzle module and controller that pressure piping is connected with pump feed unit.Pump feed unit includes urea pump and pressure passes Sensor etc., nozzle module is including urea nozzle etc..Urea pump and urea nozzle interval larger distance, and pass through urea tube phase Even.In addition, existing urea injection system includes more parts, installation is complicated, and cost is higher.

Utility model content

More accurate integrating device and its exhaust gas aftertreatment system are controlled the purpose of this utility model is to provide a kind of.

To achieve the above object, the utility model adopts the following technical solution：

A kind of integrating device pumped with nozzle, wherein described pump to pump fluid media (medium), the nozzle to the nozzle To spray the fluid media (medium) into the exhaust of engine, the integrating device includes housing, is at least partly installed on the shell Internal pump group part and with the matched nozzle assembly of the pump group part, wherein the housing is included positioned at the pump group part It upstream and the access road connected with the pump group part and is connected positioned at the downstream of the pump group part and with the pump group part Exit passageway, the exit passageway are connected with the nozzle assembly；The pump group part include to transfer tube electrical-coil, with The magnetic substance and intermeshing first gear component and second gear component of the electrical-coil interaction, wherein described First gear component includes first gear, and the second gear component includes second gear, the first gear and described second Gear is intermeshed, and the housing is equipped with the gear grooved for accommodating the first gear and the second gear, the gear grooved Side is equipped with the admission chamber with the inlet passage, and the opposite side of the gear grooved is equipped with what is connected with the exit passageway Go out sap cavity；The nozzle assembly includes the nozzle coil to drive the nozzle；

The integrating device further includes the fluid media (medium) return line being connected with the nozzle assembly, the fluid media (medium) Overflow element is equipped in return line.

As the further improved technical solution of the utility model, the fluid media (medium) return line is being connected to fluid Media storage case.

As the further improved technical solution of the utility model, the pump is urea pump, and the nozzle is urea nozzle, The fluid media (medium) is urea liquid.

As the further improved technical solution of the utility model, the integrating device be additionally provided with to the urea pump and The controller that the urea nozzle is independently controlled respectively, the controller include circuit board, the electrical-coil with it is described Nozzle coil is all connected on the circuit board.

The utility model further relate to it is a kind of pump with the integrating device of nozzle, wherein the pump is to the nozzle pump flow Body medium, the nozzle to spray the fluid media (medium) into the exhaust of engine, the integrating device include pump group part and Nozzle assembly；The pump group part includes motor case assembly, the magnetic force cover group being at least partially disposed in the motor case assembly Part and with the matched pump case assembly of the motor case assembly；The motor case assembly include electro-magnetic shielding cover and The electrical-coil being at least partially disposed in the electro-magnetic shielding cover；The magnetic force shade assembly includes being at least partially inserted into the motor Metal cap in coil and the rotor being contained in the metal cap；The pump case assembly is included positioned at the upstream of the pump And pump the access road connected and the exit passageway connected positioned at the downstream of the pump and with the pump, the outlet with described Channel is connected with the nozzle assembly；The pump case assembly further includes intermeshing first gear component and second gear Component, wherein the first gear component includes first gear axis and first gear, the second gear component includes second Gear shaft and second gear, the first gear are intermeshed with the second gear, and the rotor is fixed on described first On gear shaft；The pump case assembly is equipped with the gear grooved for accommodating the first gear and the second gear, the gear grooved Side be equipped with admission chamber with the inlet passage, the opposite side of the gear grooved is equipped with to be connected with the exit passageway Go out sap cavity；The nozzle assembly includes the nozzle coil to drive the nozzle；

As the further improved technical solution of the utility model, the motor case assembly include to the urea pump with And the controller that the urea nozzle is independently controlled respectively, the controller include circuit board, the electrical-coil and institute Nozzle coil is stated to be all connected on the circuit board.

As the further improved technical solution of the utility model, it is additionally provided in the metal cap positioned at the upper of the rotor The freeze proof body of side, the freeze proof body can be compressed to absorb because of swelling volume caused by urea icing.

As the further improved technical solution of the utility model, the pump group part, which further includes, to be housed in the metal cap And the elastomer below the rotor, the elastomer can be compressed to absorb because of expander caused by urea icing Product.

As the further improved technical solution of the utility model, the pump case assembly is additionally provided with positioned at the admission chamber In the first freeze proof stick and positioned at it is described go out sap cavity in the second freeze proof stick, the first freeze proof stick and the described second freeze proof stick It can be compressed when urea freezes.

As the further improved technical solution of the utility model, the injector assembly includes mutual with the nozzle coil The magnetic portion of effect, the first sleeve at least partly accommodating the magnetic portion, the needle portion below the magnetic portion, at least The second sleeve in needle portion described in partial receipt, act on spring between the magnetic portion and the needle portion, with the valve The valve seat and be fabricated separately with the valve seat and stick on the spinning disk on the valve seat that needle portion coordinates, the spinning disk is equipped with Several eddy flow slots.

As the further improved technical solution of the utility model, the nozzle coil is located at the periphery of the magnetic portion, The needle portion is equipped with needle, and first sleeve is mutually fixed with the second sleeve and is centered around the outer of the needle portion to be formed The space enclosed, the needle are equipped with the through-hole being connected with the space, and the second sleeve, which is equipped with, connects the space and institute The connectivity slot of eddy flow slot is stated, the valve seat is equipped with and the matched spray-hole of the needle.

As the further improved technical solution of the utility model, the motor case assembly is equipped with patching for injection molding Part, the connector are electrically connected with the circuit board, and the circuit board is equipped with several electronic components, the motor case Assembly further includes the cooling pad for being covered in the electronic component surface.

As the further improved technical solution of the utility model, the magnetic force shade assembly includes being located under the metal cap The plate portion of side, the plate portion is fixed on by several screws on the pump case assembly.

As the further improved technical solution of the utility model, the pump case assembly includes first shell, and described the One housing include the first upper surface, the first lower surface and first side, wherein first upper surface be equipped with first annular slot, The first island portion surrounded by the first annular slot and the first sealing ring being housed in the first annular slot, the plate Portion compresses downwards first sealing ring；First island portion is equipped with the first positioning hole for running through first lower surface and passes through Wear the second location hole of first lower surface, the urea pump include being housed in the first axle sleeve in the first positioning hole with And the second axle sleeve in second location hole is housed in, wherein the first gear axis is inserted into first axle sleeve, it is described Second gear axis is inserted into second axle sleeve.

As the further improved technical solution of the utility model, first island portion is further included through first upper table Face and the first diversion trench connected with second location hole and connected through first upper surface and with going out sap cavity One outlet opening；First upper surface is additionally provided with the side positioned at first island portion and is received to accommodate the sensor of sensor Rong Kong, the integrating device include sensor to detect temperature and pressure；The first shell is additionally provided with and the sensor The second outlet hole that accepting hole is connected.

As the further improved technical solution of the utility model, the pump case assembly includes being located at the first shell Lower section and the second shell that is connect with the first shell, the second shell include the second upper surface and the second following table Face, the gear grooved is through second upper surface and the second lower surface.

As the further improved technical solution of the utility model, the pump case assembly includes being located at the second shell Lower section and the third housing that is connect with the second shell, the third housing include body part and from the body part to The lug boss of lower extension, wherein the body part be equipped with third upper surface, the third upper surface be equipped with third annular groove and The third island portion surrounded by the third annular groove.

As the further improved technical solution of the utility model, the nozzle assembly includes injector assembly and is socketed in The water-cooling subbase of the outside of the injector assembly, the water-cooling subbase be equipped with mounting groove, the first cooling duct, with it is described first cold But channel spacing setting the second cooling duct and be sealed in the mounting groove periphery end cap, the injector assembly is in institute State formd between end cap and the second sleeve connect first cooling duct and second cooling duct annular it is cold But slot, first cooling duct are connect with inlet attack with so that engine coolant injects, second cooling duct with Outlet connection connection is flowed out with for engine coolant.

The utility model further relates to a kind of exhaust gas aftertreatment system, after spraying system and tail gas including exhaust aftertreatment The package system of processing, wherein the spraying system includes aforementioned integrating device, the package system includes being located at the collection Into the carrier in device downstream.

Compared to the prior art, pump is integrated in one by the utility model pump and the integrating device of nozzle with nozzle well It rises, it is simple in structure, compact, greatly facilitate the installation of client.In addition, by being controlled to electrical-coil and nozzle coil System, so as to avoid interfering with each other between pump and nozzle, improves the accuracy of control.Urea pump is integrated in integrating device On the basis of urea nozzle, due to the raising of control accuracy, the amount and oxynitrides of the urea in exhaust can be sparged into Reach suitable ratio, reduce the crystallization risk generated when excessively spraying urea.In addition, by the way that fluid media (medium) is set to flow back Cooling, improves cooling effect.

Description of the drawings

Fig. 1 is that the exhaust gas aftertreatment system of the utility model applies schematic diagram when handling motor exhaust.

Fig. 2 is the schematic diagram of integrating device in Fig. 1.

Fig. 3 is the stereoscopic schematic diagram of the integrating device of the utility model in one embodiment.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is the part isometric exploded view of the utility model integrating device, and wherein pump group part is separated with nozzle assembly.

Fig. 6 is the part isometric exploded view of the utility model integrating device, and wherein motor case assembly is separated.

Fig. 7 is the stereoscopic schematic diagram of motor case assembly in Fig. 6.

Fig. 8 is the part isometric exploded view of motor case assembly in Fig. 6.

Fig. 9 is the further three-dimensional exploded views of Fig. 8, and wherein electrical-coil is separated.

Figure 10 is further three-dimensional exploded view after motor case assembly in removal Fig. 6.

Figure 11 is the further three-dimensional exploded views of Figure 10.

Figure 12 is the further three-dimensional exploded views of Figure 11.

Figure 13 is the further three-dimensional exploded views of Figure 12, and wherein pump case assembly, injector assembly, end cap etc. is separated Come.

Figure 14 is the part isometric exploded view of pump case assembly in Figure 13.

Figure 15 is first shell and the three-dimensional exploded view of element thereon in Figure 14.

Figure 16 is Figure 15 in the three-dimensional exploded view of another angle.

Figure 17 is the stereogram of first shell in Figure 15.

Figure 18 is Figure 17 in the stereogram of another angle.

Figure 19 is the vertical view of Figure 18.

Figure 20 is the vertical view of Figure 17.

Figure 21 is the diagrammatic cross-section of the line C-C along Figure 20.

Figure 22 is the diagrammatic cross-section of the line D-D along Figure 20.

Figure 23 is the diagrammatic cross-section of the E-E lines along Figure 20.

Figure 24 is the diagrammatic cross-section of the F-F lines along Figure 20.

Figure 25 is the stereoscopic schematic diagram removed in Figure 14 after first shell.

Figure 26 is the part isometric exploded view of Figure 25.

Figure 27 is the vertical view of Figure 25.

Figure 28 is the further three-dimensional exploded views of Figure 25.

Figure 29 is the stereogram of injector assembly in Figure 13.

Figure 30 is the diagrammatic cross-section of the G-G lines along Figure 29.

Figure 31 is the three-dimensional exploded view of Figure 29.

Figure 32 is the further three-dimensional exploded views of Figure 31.

Figure 33 is the diagrammatic cross-section of the line A-A along Fig. 4.

Figure 34 is the diagrammatic cross-section of the line B-B along Fig. 4.

Figure 35 is the diagrammatic cross-section of the H-H lines along Figure 33.

Figure 36 is the three-dimensional exploded view of the utility model integrating device.

Specific embodiment

It please join shown in Fig. 1, the utility model discloses a kind of exhaust gas aftertreatment system 100, can be applied to processing and starts The tail gas of machine 10 reduces the discharge of harmful substance to meet the requirement of emission regulation.The exhaust gas aftertreatment system 100 includes tail Gas post processing spraying system 200 and exhaust aftertreatment package system 300, wherein the spraying system 200 include to Pumped from urea box 201 urea liquid (ginseng arrow X shown in) and to the engine 10 air inlet or exhaust (such as to In exhaust pipe 106 or package system 300) in injection urea liquid integrating device 1；The package system 300 includes being located at The mixer 301 in 1 downstream of integrating device and the carrier 30 as one kind 2 positioned at 301 downstream of mixer.Certainly, in certain realities Mixer can not also be set in mode or set two or more mixer by applying.The carrier 30 as one kind 2 can example Selective catalytic reduction (SCR) etc. in this way.

The engine 10 has engine coolant circulation loop.It please join shown in Fig. 1, in the reality of the utility model diagram It applies in mode, the engine coolant circulation loop is followed including first circulation circuit 101 (shown in ginseng block arrow Y) and second Loop back path 102 (is joined shown in thin arrow Z), wherein the first circulation circuit 101 is to cool down the integrating device 1, to reduce Its risk burnt out by the engine exhaust of high temperature；The second circulation circuit 102 is to heat the urea box 201, with reality Now heat defrosting function.It is understood that in first circulation circuit 101, the integrating device 1 is equipped with for engine cool The inlet attack 103 and the outlet connection 104 for engine coolant outflow that liquid stream enters；In second circulation circuit 102, Equipped with control valve 105, to open or close the control valve 105 under appropriate conditions, realize to second circulation circuit 102 Control.The heating rod 202 being connected in the second circulation circuit 102 is equipped in the urea box 201, to utilize engine The temperature of coolant carries out heating defrosting to urea liquid.

The integrating device of the utility model 1 is described in detail below.

It please join shown in Fig. 2, from principle, the integrating device 1 of the utility model is integrated with urea pump 11 and urea nozzle 12 function.The urea pump 11 includes but not limited to gear pump, diaphragm pump, plunger pump or vane pump etc..It should be appreciated that It is that term " integrated " as used herein refers to that urea pump 11 and urea nozzle 12 can be installed in air inlet as single device On pipe or exhaust pipe；Or urea pump 11 is close to each other with urea nozzle 12 and passes through shorter connecting pipe and is attached, It can be considered as a device on the whole.

In addition, the exhaust gas aftertreatment system 100 of the utility model is additionally provided with controller 13.The controller 13 can be to urine Element pump 11 and urea nozzle 12 are independently controlled.It is appreciated that the controller 13 can be integrated with the integrating device 1 It is provided separately together or with the integrating device 1.It please join shown in Fig. 2, in the utility model embodiment illustrated, institute It states controller 13 to be integrated in the integrating device 1, to realize the Highgrade integration of part, improves the installation facility of client Property.

The integrating device 1 is equipped with the housing 14 to accommodate the urea pump 11 and the urea nozzle 12.Shown in Fig. 2 Embodiment be only rough display to housing 14.For example, in one embodiment, the housing 14 by urea pump 11 with And urea nozzle 12 is shared；In another embodiment, the housing 14 is divided into and urea pump 11 matched first Housing and with 12 matched second shell of urea nozzle, first shell is assembled together with second shell, to form one It is whole.Certainly, in other implementations, the housing 14 can also be divided into several with urea pump 11 and/or urine Plain nozzle 12 matches.The housing 14 is equipped with the access road being connected between the urea box 201 and the urea pump 11 15 and the exit passageway 16 that is connected between the urea pump 11 and the urea nozzle 12.It should be noted that make here By the use of term " access road 15 " in " entrance " and " exit passageway 16 " in " outlet " be using urea pump 11 as reference, i.e., The upstream of urea pump 11 is entrance, and the downstream of urea pump 11 is outlet.The exit passageway 16 is connected with the urea nozzle 12, To pump urea liquid to the urea nozzle 12.It is understood that the access road 15 is located at the upstream of urea pump 11, For low-pressure channel；The exit passageway 16 is located at the downstream of urea pump 11, is high-pressure channel.

In addition, the integrating device 1 is equipped with the temperature sensor to detect temperature.The temperature sensor can be set It is set to and is connected with the access road 15 and/or the exit passageway 16；Or the temperature sensor can be set to pacify Mounted in any position of the integrating device 1.The signal that the temperature sensor detects passes to controller 13, controller 13 The accuracy of spray of urea nozzle 12 can be improved based on the control algolithm designed by the input signal and other signals.The collection It is additionally provided with to detect the pressure sensor of pressure into device 1, the pressure sensor is connected with the exit passageway 16, with inspection Survey the pressure in the high-pressure channel that urea pump 11 exports.Due to the Integrated design of the utility model, the distance of inner passage compares It is short, it can be considered that the pressure sensor is located closer to the urea nozzle 12.The advantages of this design, is Pressure measured by the pressure sensor relatively pressure in urea nozzle 12, improves the accuracy of data, and then improve The accuracy of spray of urea nozzle 12.In a kind of embodiment of the utility model, the temperature sensor and the pressure Sensor is two elements；In the another embodiment in the utility model, the temperature sensor is passed with the pressure Sensor is an element (i.e. sensor 174, be detailed later), but has the function of to detect temperature and pressure simultaneously.It in addition, please Join shown in Fig. 1 and Fig. 2, the integrating device 1 further includes the accumulator 108 being connected with the exit passageway 16.The accumulation of energy Device 108 is equipped with elastic component 1083, positioned at the first cavity 1081 of the side of the elastic component 1083 and positioned at the elastic component Second cavity 1082 of 1083 opposite side, wherein first cavity 1081 is connected with the exit passageway 16, described The volume of one cavity 1081 and second cavity 1082 can be adjusted by the deformation of the elastic component 1083.The bullet Property part 1083 can be spring or elastic film etc..

It please join shown in Fig. 2, the integrating device 1 is additionally provided with the fluid media (medium) return duct being connected with the nozzle assembly 19 Road 191 is equipped with overflow element 173 in the fluid media (medium) return line 191.The fluid media (medium) return line 191 is to even It is connected to fluid media (medium) storage box (i.e. urea box 201 in Fig. 1).The overflow element 173 includes but not limited to overflow element, peace Full valve or electrically-controlled valve etc..The function of the overflow element 173 is when the pressure in fluid media (medium) return line 191 is higher than setting During value, the overflow element 173 is opened, the fluid media (medium) is flowed back into the urea box 201, with to the integrated dress 1 is put to be cooled down.

In order to drive urea pump 11, the urea pump 11 is equipped with the electrical-coil 111 communicated with the controller 13. In order to drive urea nozzle 12, the urea nozzle 12 is equipped with the nozzle coil 121 communicated with the controller 13.

The controller 13 is communicated with the temperature sensor and the pressure sensor, by temperature signal with And pressure signal sends the controller 13 to.Certainly, in order to realize accurate control, the controller 13 can also receive Other signals, such as from CAN bus, related with engine operating parameter signal.In addition, the controller 13 can be with Obtain the rotating speed of the urea pump 11, certainly, the acquisition of tach signal can by corresponding speed probe 175 (hardware) or Person is realized by control algolithm (software).The controller 13 respectively to the urea pump 11 and the urea nozzle 12 into Row independent control.The advantages of this control, is that influence of the action of urea pump 11 to urea nozzle 12 can be reduced, to realize Compare high control accuracy.

In addition, under certain operating modes, since being vented for engine has higher temperature, and 12 ordinary circumstance of urea nozzle It is lower to be mounted on exhaust pipe again, it is therefore desirable to the urea nozzle 12 to be cooled down and/or heat-insulated.The integrating device 1 is additionally provided with cooling component thus, and the cooling component cools down the urea nozzle 12 by cooling down medium.The cooling Medium includes but not limited to air and/or engine coolant and/or lubricating oil and/or urea etc..It please join shown in Fig. 2, this Utility model embodiment illustrated uses water cooling, i.e., urea nozzle 12 is cooled down using engine coolant.Housing 14 It is interior to be equipped with the cooling duct 141 circulated for engine coolant.It please join shown in Fig. 1, in the implementation of the utility model diagram In mode, the integrating device 1 be additionally provided with mounting base 107 on the exhaust pipe 106 and with the mounting base 107 The heat shield 109 being fixed together.

It please join shown in Fig. 2, the main operational principle of the integrating device 1 is as follows：

Controller 13 drives urea pump 11 to operate, and urea liquid is inhaled by access road 15 in urea box 201 Urea pump 11, through being overpressurized and then being delivered to urea nozzle 12 by exit passageway 16.Wherein, controller 13 acquire and/or Calculate the signal needed, such as temperature, pressure, revolution speed etc..When reaching injection conditions, controller 13 send out control signal to Urea nozzle 12, such as be powered to nozzle coil 121, realize that urea sprays by controlling the movement of needle.Controller 13 is sent out Go out to control signal to urea pump 11 to control its rotating speed, so as to the pressure of systems stabilisation.In the embodiment party of the utility model diagram In formula, the controller 13 is respectively independently controlled the urea pump 11 and the urea nozzle 12.

It please join shown in Fig. 3 to Figure 36, structurally, in the utility model embodiment illustrated, the integrating device 1 Including pump group part 18 and nozzle assembly 19.It please join shown in Fig. 5, the nozzle assembly 19 is at least partially inserted into the pump group part In 18, and it is welded and fixed together.

It please join shown in Fig. 3 to Fig. 5, in the utility model embodiment illustrated, the pump group part 18 includes motor machine Housing assy 181, the magnetic force shade assembly 6 being at least partially disposed in the motor case assembly 181 and total with the motor case Into 181 matched pump case assemblies 182.

It please join shown in Fig. 7 to Figure 10, the motor case assembly 181 includes electro-magnetic shielding cover 183, is at least partially disposed at institute State the electrical-coil 111 and controller 13 in electro-magnetic shielding cover 183.It is described in the utility model embodiment illustrated Electro-magnetic shielding cover 183 is to be made of metal material to reduce interference of the extraneous factor to internal electronic component etc., while also can Reduce influence of the internal electronic component to other external electronic equipments.The motor case assembly 181 further includes injection molding Case 2 in periphery.The case 2 includes the case cavity to cover the controller 13 and at least part pump group part 18 21st, the through-hole 22 connected with the case cavity 21 and the waterproof and breathable lid 24 being fixed in the through-hole 22.The motor Coil 111 is electrically connected with controller 13.In the utility model embodiment illustrated, the controller 13 includes cloth thereon It is equipped with the circuit board 131 of several electronic components.Electronic component can generate heat at work, and surrounding air is caused to expand, The utility model is by setting waterproof and breathable lid 24 to well solve because air expands to damage chip and/or electronic component by pressure The problem of, while the effect of can also play waterproof.In addition, the waterproof and breathable lid 24 can improve the ring residing for controller 13 Border can meet operating condition.

In the utility model embodiment illustrated, the circuit board 131 is annular in shape, is equipped with positioned at the center at middle part Hole 135.The connector 132 being connect with the circuit board 131 is injection molded on the case 2.In addition, the motor case is total The cooling pad 130 for being covered in the electronic component surface is further included into 181.It so set, can be electricity by cooling pad 130 The equalizing temperature of sub- component, so as to avoid because burning out electronic component during hot-spot.

The magnetic force shade assembly 6 includes the metal cap 62 being at least partially inserted into the electrical-coil 111, positioned at the gold Belong to the plate portion 61 below cover 62 and the rotor 72 being contained in the metal cap 62 etc..Wherein described metal cap 62 is prominent upwards For the plate portion 61.The metal cap 62 is upward through the centre bore 135 of the circuit board 131, and is at least partially inserted into In electrical-coil 111.It please join shown in Figure 10, the plate portion 61 is tightened in by several screws 133 on pump case assembly 182, The magnetic force shade assembly 6 to be fixed.In addition, it is additionally provided in the metal cap 62 positioned at the anti-of the top of the rotor 72 Freeze body 70, the freeze proof body 70 can be compressed when urea freezes, and swelling volume be absorbed, so as to avoid being damaged by frost.In this reality With in novel embodiment illustrated, the freeze proof body 70 is installed in a sleeve, the sleeve top with metal cap 62 again It is rolled, so as to be fixed.The pump group part 18, which further includes, to be housed in the metal cap 62 and positioned at the rotor 72 The elastomer 71 of lower section, the elastomer 71 can also be compressed to absorb because of swelling volume caused by urea icing.It please join Shown in Figure 34, the electrical-coil 111 is socketed in the periphery of the metal cap 62.

The pump case assembly 182 includes stacking gradually first shell 3, second shell 4 and third together up and down Housing 5.In the utility model embodiment illustrated, the first shell 3, second shell 4 and third housing 5 are by gold Belong to material to be made.The housing 14 includes the first shell 3, second shell 4 and third housing 5.

In the utility model embodiment illustrated, the urea pump 11 is gear pump, including the electrical-coil 111st, the metal cap 62, the elastomer 71 in the metal cap 62 and rotor 72, positioned at 62 lower section of metal cap First sealing ring 73 and intermeshing first gear component 74 and second gear component 75 etc..Since gear pump can be built Vertical bigger operating pressure, therefore be conducive to improve the flow of urea nozzle 12.In addition, gear pump also is able to invert, it is conducive to Remaining urea liquid is evacuated, reduces the risk of urea crystals.

It please join shown in Figure 14 to Figure 28, in the utility model embodiment illustrated, the first shell 3, second shell Body 4 and third housing 5 are machined pieces, and pass through bolt 66 and be fixed together.The first shell 3 is equipped with positioned at side Card slot 34 and the O-ring seals 35 being held in the card slot 34.In the utility model embodiment illustrated, described One housing 3 is fixed together with motor case assembly 181 by way of rolling or welding, and pass through O-ring seals 35 into Row piston seal.

The first shell 3 includes the first upper surface 31, the first lower surface 32 and first side 33, wherein described first Upper surface 31 is equipped with first annular slot 311 and the first island portion 312 surrounded by the first annular slot 311.First ring Shape slot 311 is accommodating first sealing ring 73.The plate portion 61 is close to realize downwardly against first sealing ring 73 Envelope.First lower surface 32 is equipped with the second annular groove 325 and the second island portion 326 surrounded by second annular groove 325. Second annular groove 325 is accommodating the second sealing ring 731 (as shown in figure 16).

First island portion 312 is equipped with the first positioning hole 3121 through first lower surface 32, through described first Second location hole 3122 of lower surface 32, through first upper surface 31 and the first outlet that is connected with the exit passageway 16 Hole 3123 and the first diversion trench 3124 connected through first upper surface 31 and with second location hole 3122.Institute Urea pump 11 is stated to be equipped with the first axle sleeve 76 being housed in the first positioning hole 3121 and be housed in second location hole The second axle sleeve 77 in 3122.The first shell 3 further includes several first assembly holes 318 passed through for bolt 66, and described One assembly hole 318 is through first upper surface 31 and first lower surface 32.First upper surface 31, which is additionally provided with, to be located at First island portion, 312 side and the sensor accepting hole 313 to accommodate sensor 174, the sensor 174 have simultaneously Detect the function of temperature and pressure.The first shell 3 is additionally provided with the connection exit passageway 16 and the sensor accepting hole 313 second outlet hole 3125.

In addition, please join shown in Figure 24, the first shell 3 be equipped with through the first side 33 with urea connector 331 The feed pathway 332 of connection.It please join shown in Figure 15, Figure 16 and Figure 34, the urea connector 331 includes the filter screen close to outside 3311 and close to inside freeze proof element 3312, wherein the filter screen 3311 can carry out the impurity in urea liquid Filter, the freeze proof element 3312 can absorb swelling volume when urea freezes, so as to reduce the risk being damaged by frost.Described first Housing 3 is equipped with the connecting hole 3127 for running through first lower surface 32 and being connected with the feed pathway 332.First outlet hole 3123 are each perpendicular to feed pathway 332 with connecting hole 3127.The first positioning hole 3121, the second location hole 3122, connecting hole 3127 downward through the second island portion 326.First lower surface 32, which is equipped with, connects the first positioning hole 3121 and described the First drain charge slot 321 of two location holes 3122, to ensure pressure balance.The first drain charge slot 321 is located at the second island portion 326 On.In addition, the first shell 3 is additionally provided with the host cavity 322 downward through first lower surface 32, to accommodate at least portion The nozzle assembly 19 divided.It please join shown in Figure 21 and Figure 22, the host cavity 322 is connected with the sensor accepting hole 313. Meanwhile the host cavity 322 is also connected with second outlet hole 3125.In the utility model embodiment illustrated, second goes out Oral pore 3125 is inclined in the inside of the first shell 3.

In addition, please join shown in Figure 14 to Figure 16, Figure 22 and Figure 24, the first shell 3 is additionally provided with and feed pathway 332 And the overflow element container 319 that host cavity 322 connects.The overflow element container 319 runs through first side 33 outward, To accommodate the overflow element 173.

It please join shown in Fig. 1, the urea connector 331 is connected by urea connecting tube 333 with the urea box 201.In order to Preferably realize heating defrosting function, the exhaust gas aftertreatment system 100 is also provided with carrying out the urea connecting tube 333 The heating unit 334 of heating.It please join shown in Figure 24, in the utility model embodiment illustrated, 332 water of feed pathway The flat inside for extending into the first shell 3.Certainly, in other embodiments, the feed pathway 332 can also be in certain Angle.

It please join shown in Figure 25 to Figure 27, the first gear component 74 includes first gear axis 741 and is fixed on first First gear 742 on gear shaft 741；The second gear component 75 includes second gear axis 751 and is fixed on the second tooth Second gear 752 on wheel shaft 751, the first gear 742 are intermeshed with the second gear 752.In the utility model In embodiment illustrated, the first gear 742 and 752 external toothing of second gear.In addition, the first gear axis 741 be driving shaft, and the second gear axis 751 is driven shaft, and the first gear axis 741 is higher than the second gear axis 751. The upper end of the first gear axis 741 passes through first axle sleeve 76 and is fixed with rotor 72.The second gear axis 751 Upper end be located in second axle sleeve 77.When being powered to electrical-coil 111, interaction is generated with magnetic substance 72, Electromagnetic force can drive first gear axis 741 to rotate, and thus first gear 742 and second gear 752 be driven to rotate.

Please join shown in Figure 25 to Figure 28, the second shell 4 be located at the lower section of the first shell 3 and with first shell 3 It is connected.In addition, in order to preferably position, several positioning pins are additionally provided between the first shell 3 and the second shell 4 328.The second shell 4 includes the second upper surface 41, the second lower surface 42 and through second upper surface 41 and second Lower surface 42 and the gear grooved 43 to accommodate the first gear 742 and second gear 752.The side of the gear grooved 43 Equipped with the admission chamber 431 connected with access road 15, the opposite side of the gear grooved 43 is equipped with to be connected with the exit passageway 16 Go out sap cavity 432.Specifically, admission chamber 431 is connected with connecting hole 3127, goes out the upper end of sap cavity 432 and first outlet hole 3123 Connection.In addition, in order to improve the anti-freezing property of product, the second shell 4 is additionally provided with first in the admission chamber 431 Freeze proof stick 441 and positioned at it is described go out sap cavity 432 in the second freeze proof stick 442, the first freeze proof stick 441 and described second anti- Freezing stick 442 can be compressed when urea freezes.

In addition, second shell 4 is additionally provided with the receiving hole 411 passed through at least partly described nozzle assembly 19.The nozzle Component 19 partly protrudes second upper surface 41 and is housed in the host cavity 322 upwards.So set, the urea of high pressure Solution can be transported to urea nozzle 12.The second shell 4 further includes several be aligned with first assembly hole 318 Two assembly holes 418.

It please join shown in Figure 28, the third housing 5 is located at the lower section of the second shell 4 and is connected with second shell 4. The third housing 5 includes body part 51, the lug boss 52 extended downwardly from body part 51 and outside from the body part 51 The flange 53 of extension wherein the flange 53 is equipped with several third assembly holes 531 being aligned with second assembly hole 418, is used So that bolt 66 passes through.The body part 51 is equipped with third upper surface 511, and the third upper surface 511 is equipped with third annular groove 512 and the third island portion 513 surrounded by the third annular groove 512.The third annular groove 512 seals to accommodate third Enclose 732 (as shown in figure 33).Third island portion 513 is equipped with through the third location hole 5111 of third upper surface 511 and through the 4th location hole 5112 of three upper surfaces 511.The third housing 5 is equipped with the third being contained in the third location hole 5111 Axle sleeve 78 and the 4th axle sleeve 79 being contained in the 4th location hole 5112.The lower end positioning of the first gear axis 741 In third axle sleeve 78, the lower end of the second gear axis 751 is located in the 4th axle sleeve 79.

In addition, the third island portion 513 is additionally provided with the second diversion trench 5114 and positioned at the third upper surface 511 Three diversion trenches 5115, wherein second diversion trench 5114 is connected with third location hole 5111, third diversion trench 5115 and the 4th Location hole 5112 connects.Second diversion trench 5114 is to be obliquely installed in the inside of third housing 5 with third diversion trench 5115 's.In the vertical direction, second diversion trench 5114 and the third diversion trench 5115 with it is described go out sap cavity 432 be connected It is logical, so set, to ensure that urea liquid can enter in 5111 and the 4th location hole 5112 of third location hole with to third 78 and the 4th axle sleeve 79 of axle sleeve is lubricated.

During work, urea liquid from the urea connecting tube 333 enter feed pathway 332, and pass through connecting hole 3127 into Enter in admission chamber 431；After the pressurization of gear pump, the urea liquid of a part of high pressure is upward through first outlet hole 3123 And enter in metal cap 62, the urea liquid of another part high pressure is downwardly into the second diversion trench 5114 and third diversion trench In 5115；A part for urea liquid in metal cap 62 enters from the first diversion trench 3124 in the second axle sleeve 77, then leads to It crosses the first drain charge slot 321 to enter in the first axle sleeve 76, to improve the stationarity of gear pump rotation, reduces abrasion；Positioned at metal cap Another part urea liquid in 62 enters from second outlet hole 3125 in host cavity 322 to flow to nozzle assembly 19.

It is appreciated that in the utility model embodiment illustrated, access road 15 includes feed pathway 332, connection Hole 3127 and admission chamber 431.Because the access road 15 is located at the upstream of urea pump 11, it is referred to as low pressure and leads to Road.The exit passageway 16 includes sap cavity 432, first outlet hole 3123, second outlet hole 3125, host cavity 322 etc..Because The exit passageway 16 is located at the downstream of urea pump 11, so being referred to as high-pressure channel.

It please join shown in Figure 29 to Figure 36, the nozzle assembly 19 includes injector assembly 120 and to be socketed in the nozzle total Into the water-cooling subbase 190 of 120 outside.In the utility model embodiment illustrated, the injector assembly 120 and Water-cooled bottom Seat 190 together constitutes urea nozzle 12.

It please join shown in Figure 29 to Figure 32, in the utility model embodiment illustrated, the injector assembly 120 includes spray Mouth coil 121, with the magnetic portion 81 of the nozzle coil 121 interaction, positioned at the needle portion 82 of 81 lower section of the magnetic portion, The spring 83 acted between the magnetic portion 81 and the needle portion 82 and the valve seat 84 coordinated with the needle portion 82 (ginseng Shown in Figure 30) etc..Wherein, the nozzle coil 121 is located at the periphery of the magnetic portion 81, and the injector assembly 120 further includes It at least partly accommodates the first sleeve 811 of the magnetic portion 81 and at least partly accommodates the second sleeve in the needle portion 82 812.In addition, the injector assembly 120 further includes the sleeve part 122 for being socketed in 121 periphery of nozzle coil.The spring 83 In the magnetic portion 81 and the needle portion 82.The needle portion 82 is equipped with tapered portion 821 and from the tapered portion 821 needles 822 extended downwardly.

First sleeve 811 is secured together to be centered around the needle portion 82 with the second sleeve 812 The space 813 of periphery, the needle 822 are equipped with the through-hole 814 being connected with the space 813.The injector assembly 120 also wraps It includes and the spinning disk 85 on the valve seat 84 is fabricated separately and sticked on the valve seat 84, the spinning disk 85 is equipped with several eddy flows Slot 851.The second sleeve 812, which is equipped with, connects the space 813 and the connectivity slot 815 of the eddy flow slot 851.The valve seat 84 Equipped with the 822 matched spray-hole 841 of needle.

Please join shown in Figure 30, the upper end of the magnetic portion 81 be socketed with the 4th sealing ring 816 with the host cavity 322 Inner wall realizes sealing.In addition, the injector assembly 120 further includes the terminal package portion 86 being connect with the nozzle coil 121, institute It states and the 5th sealing ring 817 is socketed in terminal package portion 86.

The water-cooling subbase 190 includes main part 91, downward through the mounting groove 92 of the main part 91 and described in 91 outwardly extending mounting flange 93 of main part.The mounting flange 93 is equipped with is installed to exhaust pipe 106 by the integrating device 1 Or several first mounting holes 931 on package system 300.The main part 91 is equipped with the 4th upper surface 911 and the 4th side Face 912.4th upper surface 911 is equipped with the accommodating chamber 94 for accommodating the urea nozzle 12 and the groove for accommodating lug boss 52 95。

Cooling duct 141 in water-cooling subbase 190 is included through the first cooling duct of the 4th side 912 913 and with 913 spaced second cooling duct 914 of the first cooling duct.Wherein, first cooling duct 913 connect with the inlet attack 103, and second cooling duct 914 is connected with the outlet connection 104.The Water-cooled bottom Seat 190 is equipped with the end cap 96 for the periphery for being sealed in mounting groove 92 (shown in ginseng Figure 33).In the utility model embodiment illustrated In, the end cap 96 is welded in mounting groove 92.So set, the water-cooling subbase 190 is in end cap 96 and the second sleeve The annular cooling bath 916 of the first cooling duct 914 of connection and the second cooling duct 915 is formd between 812.

In the utility model embodiment illustrated, the mounting flange 93 is formed with 91 one machining of main part. Certainly, in other embodiments, the mounting flange 93 can also be fabricated separately with the main part 91, then be welded on one It rises.

It is appreciated that in the other embodiment of the utility model, such as integrating device is applied to the row to engine Fuel is sprayed in gas, to realize the regeneration of the diesel particulate filter in downstream (DPF).Under this application, the urea pump 11 Petrolift is may alternatively be, the urea nozzle 12 may alternatively be fuel nozzle, and the urea liquid can be replaced For fuel.It is this variation be to person of ordinary skill in the field it will be appreciated that, details are not described herein.

For the ease of understanding the utility model, urea pump is referred to as pumping with petrolift, and urea nozzle is referred to as with fuel nozzle For nozzle, urea liquid is referred to as fluid media (medium) with fuel.

Compared to the prior art, the integrating device 1 of the utility model is a kind of integrated design, can save or shorten In the prior art to connect the urea tube of pump and nozzle, various sensors in the pump feed unit of the prior art can also be saved Plug connector between harness can also need not heat thawing apparatus, therefore reliability is higher.The integrating device of the utility model 1 is compact-sized, small, convenient for the installation of a variety of models.In addition, interior fluid mediums in the integrating device 1 of the utility model Channel is shorter, and pressure drop is small, and the dead volume between pump and nozzle is small, and efficiency is higher.Sensor 174 is near from nozzle, injection pressure essence Degree is high.In addition, by being independently controlled respectively to pump and nozzle, the action for avoiding nozzle is driven by the action pumped It is dynamic, so as to improve the accuracy of control.Since the accuracy of spray of nozzle improves, so as to the urea being sparged into exhaust Amount and oxynitrides reach suitable ratio, reduce the crystallization risk generated when excessively spraying urea.This practicality is new Water cooling may be used in the integrating device 1 of type, makes the urea temperature remained in integrating device 1 that crystalline temperature be not achieved, is not likely to produce Crystallization.

Above example is merely to illustrate the utility model and not limits the described technical solution of the utility model, right The understanding of this specification should be based on person of ordinary skill in the field, although this specification is with reference to the above embodiments The utility model is had been carried out being described in detail, still, it will be understood by those of ordinary skill in the art that, technical field Technical staff still the utility model can be modified or replaced equivalently, and all do not depart from the essence of the utility model The technical solution and its improvement of god and range, should all cover in the right of the utility model.

Claims

1. a kind of integrating device, the integrating device includes pump and nozzle, wherein described pump to pump fluid to the nozzle Medium, the nozzle is spraying the fluid media (medium) into the exhaust of engine, it is characterised in that：The integrating device includes shell Body, the pump group part being at least partly installed in the housing and with the matched nozzle assembly of the pump group part, wherein described Housing includes the access road for being located at the upstream of the pump group part and being connected with the pump group part and positioned at the pump group part Downstream and the exit passageway connected with the pump group part, the exit passageway are connected with the nozzle assembly；The pump group part packet Include the electrical-coil to transfer tube, the magnetic substance to interact with the electrical-coil and intermeshing first gear group Part and second gear component, wherein the first gear component includes first gear, the second gear component includes the second tooth Wheel, the first gear are intermeshed with the second gear, and the housing, which is equipped with, accommodates the first gear and described second The gear grooved of gear, the side of the gear grooved are equipped with the admission chamber with the inlet passage, the gear grooved it is another Side is equipped with goes out sap cavity with what the exit passageway connected；The nozzle assembly includes the nozzle coil to drive the nozzle；

The integrating device further includes the fluid media (medium) return line being connected with the nozzle assembly, the fluid media (medium) reflux Overflow element is equipped in pipeline.

2. integrating device as described in claim 1, it is characterised in that：The fluid media (medium) return line is being connected to fluid Media storage case.

3. integrating device as described in claim 1, it is characterised in that：The pump is urea pump, and the nozzle is urea nozzle, The fluid media (medium) is urea liquid.

4. integrating device as claimed in claim 3, it is characterised in that：The integrating device be additionally provided with to the urea pump and The controller that the urea nozzle is independently controlled respectively, the controller include circuit board, the electrical-coil with it is described Nozzle coil is all connected on the circuit board.

5. a kind of integrating device, the integrating device includes pump and nozzle, wherein described pump to pump fluid to the nozzle Medium, the nozzle is spraying the fluid media (medium) into the exhaust of engine, it is characterised in that：The integrating device includes pump Component and nozzle assembly；The pump group part includes motor case assembly, is at least partially disposed in the motor case assembly Magnetic force shade assembly and with the matched pump case assembly of the motor case assembly；The motor case assembly includes electromagnetic screen Cover cover and the electrical-coil being at least partially disposed in the electro-magnetic shielding cover；The magnetic force shade assembly includes being at least partially inserted into Metal cap in the electrical-coil and the rotor being contained in the metal cap；The pump case assembly includes being located at described The upstream of pump and the access road connected with the pump and the exit passageway connected positioned at the downstream of the pump and with the pump, The exit passageway is connected with the nozzle assembly；The pump case assembly further include intermeshing first gear component with Second gear component, wherein the first gear component includes first gear axis and first gear, the second gear component Including second gear axis and second gear, the first gear is intermeshed with the second gear, and the rotor is fixed on On the first gear axis；The pump case assembly is equipped with the gear grooved for accommodating the first gear and the second gear, institute The side of gear grooved is stated equipped with the admission chamber with the inlet passage, the opposite side of the gear grooved is equipped with and the outlet Channel connection goes out sap cavity；The nozzle assembly includes the nozzle coil to drive the nozzle；

6. integrating device as claimed in claim 5, it is characterised in that：The pump is urea pump, and the nozzle is urea nozzle, The fluid media (medium) is urea liquid.

7. integrating device as claimed in claim 6, it is characterised in that：The motor case assembly include to the urea pump with And the controller that the urea nozzle is independently controlled respectively, the controller include circuit board, the electrical-coil and institute Nozzle coil is stated to be all connected on the circuit board.

8. integrating device as claimed in claim 6, it is characterised in that：It is additionally provided in the metal cap positioned at the upper of the rotor The freeze proof body of side, the freeze proof body can be compressed to absorb because of swelling volume caused by urea icing.

9. integrating device as claimed in claim 8, it is characterised in that：The pump group part, which further includes, to be housed in the metal cap And the elastomer below the rotor, the elastomer can be compressed to absorb because of expander caused by urea icing Product.

10. integrating device as claimed in claim 6, it is characterised in that：The pump case assembly is additionally provided with positioned at the feed liquor The first freeze proof stick in chamber and positioned at it is described go out sap cavity in the second freeze proof stick, the first freeze proof stick and described second freeze proof Stick can be compressed when urea freezes.

11. integrating device as claimed in claim 5, it is characterised in that：The nozzle includes mutually making with the nozzle coil Magnetic portion, the first sleeve at least partly accommodating the magnetic portion, at least the needle portion below the magnetic portion, portion The second sleeve in point receiving needle portion, act on spring between the magnetic portion and the needle portion, with the needle The valve seat and be fabricated separately with the valve seat and stick on the spinning disk on the valve seat that portion coordinates, if the spinning disk is equipped with Dry eddy flow slot.

12. integrating device as claimed in claim 11, it is characterised in that：The nozzle coil is located at the outer of the magnetic portion It encloses, the needle portion is equipped with needle, and first sleeve is mutually fixed with the second sleeve and is centered around the needle portion to be formed Periphery space, the needle is equipped with the through-hole that is connected with the space, and the second sleeve, which is equipped with, connects the space With the connectivity slot of the eddy flow slot, the valve seat is equipped with and the matched spray-hole of the needle.

13. integrating device as claimed in claim 7, it is characterised in that：The motor case assembly is equipped with connecing for injection molding Plug-in unit, the connector are electrically connected with the circuit board, and the circuit board is equipped with several electronic components, the motor machine Housing assy further includes the cooling pad for being covered in the electronic component surface.

14. integrating device as claimed in claim 6, it is characterised in that：The magnetic force shade assembly includes being located at the metal cap The plate portion of lower section, the plate portion are fixed on by several screws on the pump case assembly.

15. integrating device as claimed in claim 14, it is characterised in that：The pump case assembly includes first shell, described First shell includes the first upper surface, the first lower surface and first side, wherein first upper surface is equipped with first annular Slot, the first island portion surrounded by the first annular slot and the first sealing ring being housed in the first annular slot, it is described Plate portion compresses downwards first sealing ring；First island portion be equipped with through first lower surface first positioning hole with And the second location hole through first lower surface, the urea pump include the first axle being housed in the first positioning hole The second axle sleeve for covering and being housed in second location hole, wherein the first gear axis is inserted into first axle sleeve, The second gear axis is inserted into second axle sleeve.

16. integrating device as claimed in claim 15, it is characterised in that：First island portion is further included on described first It surface and the first diversion trench connected with second location hole and is connected through first upper surface and with going out sap cavity First outlet hole；First upper surface is additionally provided with the side positioned at first island portion and the sensor to accommodate sensor Accepting hole, the integrating device include sensor to detect temperature and pressure；The first shell is additionally provided with and the sensing The second outlet hole that device accepting hole is connected.

17. integrating device as claimed in claim 15, it is characterised in that：The pump case assembly includes being located at the first shell The lower section of body and the second shell being connect with the first shell, the second shell include the second upper surface and the second following table Face, the gear grooved is through second upper surface and the second lower surface.

18. integrating device as claimed in claim 17, it is characterised in that：The pump case assembly includes being located at the second shell The lower section of body and the third housing being connect with the second shell, the third housing include body part and from the body parts The lug boss extended downwardly, wherein the body part be equipped with third upper surface, the third upper surface be equipped with third annular groove with And the third island portion surrounded by the third annular groove.

19. integrating device as claimed in claim 12, it is characterised in that：The nozzle assembly includes injector assembly and socket Water-cooling subbase in the outside of the injector assembly, the water-cooling subbase are equipped with mounting groove, the first cooling duct and described first Spaced second cooling duct in cooling duct and the peripheral end cap for being sealed in the mounting groove, the injector assembly exist The annular for connecting first cooling duct and second cooling duct is formd between the end cap and the second sleeve Cooling bath, first cooling duct are connect with inlet attack with so that engine coolant injects, second cooling duct It is connect with outlet connection with so that engine coolant flows out.

20. a kind of exhaust gas aftertreatment system, the package system of spraying system and exhaust aftertreatment including exhaust aftertreatment, Described in spraying system include integrating device as described in any one in claim 1 to 19, the package system includes Carrier positioned at the integrating device downstream.