CN211082031U - Fuel control and injection device for DPF regeneration - Google Patents
Fuel control and injection device for DPF regeneration Download PDFInfo
- Publication number
- CN211082031U CN211082031U CN201922154447.5U CN201922154447U CN211082031U CN 211082031 U CN211082031 U CN 211082031U CN 201922154447 U CN201922154447 U CN 201922154447U CN 211082031 U CN211082031 U CN 211082031U
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- oil
- injection
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- fuel
- base
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- 238000002347 injection Methods 0.000 title claims abstract description 76
- 239000007924 injection Substances 0.000 title claims abstract description 76
- 239000000446 fuel Substances 0.000 title claims abstract description 38
- 230000008929 regeneration Effects 0.000 title claims abstract description 21
- 238000011069 regeneration method Methods 0.000 title claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 48
- 239000000295 fuel oil Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 239000002199 base oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a DPF regeneration technical field discloses a fuel control and injection apparatus for DPF regeneration, including fuel the control unit and spraying the unit, the fuel the control unit includes control base, and control base is equipped with oil inlet and oil-out, and oil pipe intercommunication fuel feeding device is passed through to control base's oil inlet, and control base's oil-out passes through the oil inlet that oil pipe connects the injection unit, and the export of spraying the unit sets up in the exhaust pipe. The utility model has reasonable and compact structure, lower manufacturing difficulty, reduced cost, and good reliability and durability; the fuel control unit has high precision, and the fuel is metered at regular time and quantity by utilizing the two pressure sensors, so that the control of the regeneration required injection quantity can be accurately carried out, and partial system fault tests can be responded; the sprayed unit has a self-cleaning function, and the carbon deposition prevention effect is good by matching with a cooling liquid circulation cooling spray valve.
Description
Technical Field
The utility model relates to a DPF regeneration technical field, concretely relates to fuel control and injection apparatus for DPF regeneration.
Background
In order to meet increasingly stringent emission regulations, current internal combustion engines, particularly diesel internal combustion engines, are required to be equipped with exhaust gas aftertreatment systems, including diesel particulate traps (DPFs). Such traps accumulate soot during engine operation and thus cause an increase in engine exhaust back pressure, with consequent deterioration in the economy and dynamics of diesel internal combustion engines, and therefore must burn off the trapped soot in a timely manner to effect regeneration of the diesel particulate trap. Therefore, atomized diesel oil needs to be injected into the exhaust pipe of the diesel engine at regular time and quantity, atomized diesel oil droplets and exhaust gas in the exhaust pipe are mixed to generate violent oxidation reaction in an oxidation catalyst (DOC), and huge heat generated by the oxidation reaction comes into the DPF along with the exhaust gas to ignite carbon black particles, so that the regeneration of the DPF is realized.
The device for controlling and spraying the fuel for DPF regeneration in the prior art is complex in structure and high in manufacturing difficulty, so that the cost is high, and the popularization and the application are not facilitated.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of background art, the utility model provides a fuel control and injection apparatus for DPF regeneration, the problem of solution is that the device structure that is used for DPF regeneration's fuel control and injection among the prior art is comparatively complicated, makes the degree of difficulty height, leads to its with high costs.
For solving the technical problem, the utility model provides a following technical scheme:
the fuel control and injection device for DPF regeneration comprises a fuel control unit and an injection unit, wherein the fuel control unit comprises a control base, the control base is provided with an oil inlet and an oil outlet, the oil inlet of the control base is communicated with a fuel supply device through an oil pipe, the oil outlet of the control base is connected with the oil inlet of the injection unit through an oil pipe, and the outlet of the injection unit is arranged in an exhaust pipe;
the oil outlet of the metering valve is communicated with the oil outlet of the control base, the first pressure sensor is arranged on an oil path between the electromagnetic valve switch and the metering valve, a containing cavity of the first pressure sensor is communicated with the oil inlet of the metering valve, the second pressure sensor is arranged on the oil path behind the metering valve, a containing cavity of the second pressure sensor is communicated with the oil outlet of the control base, and the joint of the electromagnetic valve switch and the control base is sealed through a sealing ring; fuel oil is injected into an oil inlet of the control base by a fuel oil supply device (such as an oil pump), passes through the electromagnetic valve switch, the metering valve, an oil outlet of the control base and the injection unit in sequence, and is sprayed into the exhaust hole in a fogdrop mode.
The injection unit comprises an injection valve and a cooling base, the injection valve sleeve is arranged in the cooling base, and cooling liquid cools the injection valve in the cooling base.
Preferably, the cooling base is provided with a stepped injection valve mounting hole penetrating through the top surface and the bottom surface, a liquid inlet and a liquid outlet are arranged on the side surface of the cooling base, the liquid inlet and the liquid outlet are respectively communicated with the injection valve mounting hole through channels, the injection valve is mounted in the injection valve mounting hole, an annular cavity is formed between the periphery of the injection valve and the inner wall of the injection valve mounting hole, and a sealing cover for sealing the injection valve mounting hole is arranged above the cooling base, so that a sealed cooling channel is formed, namely, cooling liquid enters and flows into the annular cavity from the liquid inlet and then flows out from the liquid outlet, and the cooling liquid circulates and reciprocates to cool the injection valve.
Preferably, a joint for fuel to enter is arranged on the side face of the injection valve, an oil nozzle is arranged at the bottom end of the injection valve, the injection valve is fixed in the injection valve mounting hole through compression, the compression fixing cost is low, meanwhile, the sealing performance is high, and the manufacturing cost is further reduced.
Preferably, the bottom of the cooling base is provided with a heat insulation gasket, two ends of the heat insulation gasket are fixedly connected with the cooling base, the central part of the heat insulation gasket is a circular table protruding outwards, and the center of the circular table is provided with a through hole for fuel oil to pass through.
Preferably, the control base is provided with two notches, two opposite side walls in the notches are correspondingly provided with connecting holes, the electromagnetic valve switch and the metering valve are respectively arranged in one of the notches and are fixedly connected with the control base through inserting the connecting holes, the connecting holes are communicated with an oil way in the control base or an oil inlet of the control base or an oil outlet of the control base, and fuel oil enters the metering valve through the oil way in the control base after entering the electromagnetic valve switch and then flows out of the oil outlet of the control base.
Preferably, the connecting hole is provided with a clamp, the end part of the electromagnetic valve switch sleeved with the clamp is connected with the electromagnetic valve switch and the control base, or the end part of the electromagnetic valve switch sleeved with the clamp is connected with the metering valve and the control base, so that the connection firmness of the electromagnetic valve switch, the metering valve and the control base is further improved.
Compared with the prior art, the utility model following beneficial effect has at least:
1) the structure is reasonable and compact, the manufacturing difficulty is low, the cost is reduced, and the reliability and the durability are good;
2) the fuel control unit has high precision, and the fuel is metered at regular time and quantity by utilizing the two pressure sensors, so that the control of the regeneration required injection quantity can be accurately carried out, and partial system fault tests can be responded;
3) the sprayed unit has a self-cleaning function, and the carbon deposition prevention effect is good by matching with a cooling liquid circulation cooling spray valve.
Drawings
The utility model discloses there is following figure:
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic diagram of a fuel control unit according to the present invention;
fig. 3 is a schematic diagram of the fuel control unit according to the present invention (the solenoid valve switch is omitted);
fig. 4 is a schematic view of the injection unit of the present invention;
fig. 5 is an exploded view of the injection unit of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1-5, the fuel control and injection device for DPF regeneration comprises a fuel control unit 1 and an injection unit 2, the fuel control unit 1 comprises a control base 11, the control base 11 is provided with an oil inlet and an oil outlet, the oil inlet of the control base 11 is communicated with a fuel supply device through an oil pipe, the oil outlet of the control base 11 is connected with the oil inlet of the injection unit 2 through an oil pipe, and the outlet of the injection unit 2 is arranged in an exhaust pipe 3;
the control base 11 is provided with an electromagnetic valve switch 12, a metering valve 13, a first pressure sensor 14 and a second pressure sensor 15, an oil inlet of the electromagnetic valve switch 12 is communicated with an oil inlet 113 of the control base 11, an oil outlet of the electromagnetic valve switch 12 is communicated with an oil inlet of the metering valve 13, an oil outlet of the metering valve 13 is communicated with an oil outlet 114 of the control base 11, the first pressure sensor 14 is arranged on an oil path between the electromagnetic valve switch 12 and the metering valve 13, a containing cavity of the first pressure sensor 14 is communicated with the oil inlet of the metering valve 13, the second pressure sensor 15 is arranged on the oil path behind the metering valve 13, a containing cavity of the second pressure sensor 15 is communicated with the oil outlet of the control base 11, and a joint of the electromagnetic valve switch 12 and the control; fuel oil is injected into an oil inlet of the control base 11 by a fuel oil supply device (such as an oil pump), passes through the electromagnetic valve switch 12, the metering valve 13, an oil outlet of the control base 11 and the injection unit 2 in sequence, and is sprayed into the exhaust pipe 3 in a fog droplet mode.
The injection unit 2 includes an injection valve 21 and a cooling base 22, the injection valve 21 is housed in the cooling base 22, and the cooling liquid flows through the cooling base 22 to cool the injection valve 21.
The cooling base 22 is provided with a stepped injection valve mounting hole 221 penetrating through the top surface and the bottom surface, the side surface of the cooling base 22 is provided with a liquid inlet 222 and a liquid outlet 223, the liquid inlet 222 and the liquid outlet 223 are respectively communicated with the injection valve mounting hole 221 through channels, the injection valve 21 is mounted in the injection valve mounting hole 221, a ring cavity is formed between the periphery of the injection valve 21 and the inner wall of the injection valve mounting hole 221, and a sealing cover for sealing the injection valve mounting hole 221 is arranged above the cooling base 22, so that a sealed cooling channel is formed, namely, cooling liquid enters from the liquid inlet 222, flows into the ring cavity, flows out from the liquid outlet 223, circulates and reciprocates to cool the injection valve 21.
The side of the injection valve 21 is provided with a joint 224 for fuel to enter, the bottom end of the injection valve 21 is provided with an oil nozzle 225, the injection valve 21 is fixed in the injection valve mounting hole 221 through compression, the compression fixing cost is low, meanwhile, the sealing performance is high, and the manufacturing cost is further reduced.
The bottom of the cooling base 22 is provided with a heat insulation gasket 226, two ends of the heat insulation gasket 226 are fixedly connected with the cooling base 22, the center of the heat insulation gasket 226 is a circular truncated cone 227 protruding outwards, and a through hole for fuel oil to pass through is formed in the center of the circular truncated cone 227.
Two notches 111 are formed in the control base 11, connecting holes 112 are correspondingly formed in two opposite side walls in the notches 111, the electromagnetic valve switch 12 and the metering valve 13 are respectively arranged in one notch 111 and are fixedly connected with the control base 11 through being inserted into the connecting holes 112, the connecting holes 112 are communicated with an oil way in the control base 11 or an oil inlet of the control base 11 or an oil outlet of the control base 11, and fuel enters the metering valve 13 through the oil way in the control base 11 after entering the electromagnetic valve switch 12 and then flows out from the oil outlet of the control base 11.
The connecting hole 112 is provided with a clamp 16, the clamp 16 is sleeved on the end portion of the electromagnetic valve switch 12 to connect the electromagnetic valve switch 12 and the control base 11, or the clamp 16 is sleeved on the end portion of the metering valve 13 to connect the metering valve 13 and the control base 11, so that the connection firmness of the electromagnetic valve switch 12, the metering valve 13 and the control base 11 is further improved.
In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A fuel control and injection apparatus for DPF regeneration, including fuel control unit and injection unit, its characterized in that: the fuel control unit comprises a control base, the control base is provided with an oil inlet and an oil outlet, the oil inlet of the control base is communicated with a fuel supply device through an oil pipe, the oil outlet of the control base is connected with the oil inlet of the injection unit through an oil pipe, and the outlet of the injection unit is arranged in an exhaust pipe;
the control base is provided with a solenoid valve switch, a metering valve, a first pressure sensor and a second pressure sensor, an oil inlet of the solenoid valve switch is communicated with an oil inlet of the control base, an oil outlet of the solenoid valve switch is communicated with an oil inlet of the metering valve, an oil outlet of the metering valve is communicated with an oil outlet of the control base, the first pressure sensor is arranged on an oil way between the solenoid valve switch and the metering valve, the second pressure sensor is arranged on an oil way behind the metering valve, and a joint of the solenoid valve switch and the control base is sealed through a sealing ring;
the injection unit comprises an injection valve and a cooling base, and the injection valve sleeve is arranged in the cooling base.
2. The fuel control and injection apparatus for DPF regeneration of claim 1, wherein: the cooling base is provided with a stepped hole type injection valve mounting hole penetrating through the top surface and the bottom surface, a liquid inlet and a liquid outlet are formed in the side surface of the cooling base, the liquid inlet and the liquid outlet are communicated with the injection valve mounting hole through channels respectively, the injection valve is mounted in the injection valve mounting hole, an annular cavity is formed between the periphery of the injection valve and the inner wall of the injection valve mounting hole, and a sealing cover for sealing the injection valve mounting hole is arranged above the cooling base.
3. The fuel control and injection apparatus for DPF regeneration of claim 2, wherein: the side of the injection valve is provided with a joint for fuel to enter, the bottom end of the injection valve is provided with an oil nozzle, and the injection valve is fixed in the injection valve mounting hole through compression.
4. The fuel control and injection apparatus for DPF regeneration of claim 3, wherein: the cooling base bottom sets up thermal-insulated gasket, the both ends fixed connection cooling base of thermal-insulated gasket, the central part of thermal-insulated gasket is outside convex round platform, the center of round platform is equipped with the through-hole that supplies the fuel to pass through.
5. The fuel control and injection apparatus for DPF regeneration of claim 1, wherein: the electromagnetic valve switch and the metering valve are respectively arranged in one of the notches and are fixedly connected with the control base through inserting the connecting hole, and the connecting hole is communicated with an oil circuit in the control base or an oil inlet of the control base or an oil outlet of the control base.
6. The fuel control and injection apparatus for DPF regeneration of claim 5, wherein: the end part of the electromagnetic valve switch is sleeved with the clamp and connected with the electromagnetic valve switch and the control base, or the end part of the electromagnetic valve switch is sleeved with the clamp and connected with the metering valve and the control base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154447.5U CN211082031U (en) | 2019-12-04 | 2019-12-04 | Fuel control and injection device for DPF regeneration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154447.5U CN211082031U (en) | 2019-12-04 | 2019-12-04 | Fuel control and injection device for DPF regeneration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211082031U true CN211082031U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922154447.5U Active CN211082031U (en) | 2019-12-04 | 2019-12-04 | Fuel control and injection device for DPF regeneration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211082031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031896A (en) * | 2020-08-31 | 2020-12-04 | 郑州日产汽车有限公司 | Automobile hydrocarbon injection system |
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2019
- 2019-12-04 CN CN201922154447.5U patent/CN211082031U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031896A (en) * | 2020-08-31 | 2020-12-04 | 郑州日产汽车有限公司 | Automobile hydrocarbon injection system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200824 Address after: 405-1, building D, Xingye building, 97-1 Linghu Avenue, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Wuxi Keka Technology Co., Ltd Address before: No.10, Hewan group, Taochong village, Qingcao Town, Tongcheng City, Anqing City, Anhui Province Patentee before: Wang Liushuai |