CN113915038A - Oil injector electromagnetic assembly for high-pressure common rail oil injection system - Google Patents
Oil injector electromagnetic assembly for high-pressure common rail oil injection system Download PDFInfo
- Publication number
- CN113915038A CN113915038A CN202110955552.8A CN202110955552A CN113915038A CN 113915038 A CN113915038 A CN 113915038A CN 202110955552 A CN202110955552 A CN 202110955552A CN 113915038 A CN113915038 A CN 113915038A
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- China
- Prior art keywords
- magnetic head
- pressing block
- head pressing
- oil
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 10
- 239000007924 injection Substances 0.000 title claims abstract description 10
- 208000010727 head pressing Diseases 0.000 claims abstract description 66
- 238000003466 welding Methods 0.000 claims abstract description 17
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 9
- 239000002131 composite material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses an oil injector electromagnetic assembly for a high-pressure common rail oil injection system, which comprises a magnetic head core shaft, a magnetic head pressing block, a magnetic core, an armature shaft and a spring, wherein the magnetic head core shaft is arranged on the magnetic head pressing block; the magnetic head core shaft and the magnetic head pressing block adopt a split structure; the magnetic head core shaft comprises an oil return section positioned at the upper part, a magnetic head pressing block connecting section positioned in the middle and a magnetic core mounting section positioned at the lower part; an annular welding groove is formed at the joint of the oil return section and the magnetic head pressing block; an oil inlet hole is formed in the magnetic core mounting section close to the magnetic head pressing block connecting section; an armature shaft and a spring are arranged in the magnetic head core shaft; the magnetic head core shaft is inserted into a central hole of the magnetic head pressing block, and the magnetic head pressing block connecting section is fixedly connected with the inner end face of the central hole of the magnetic head pressing block in the annular welding groove in a welding mode; and an annular oil inlet groove is formed in the position, corresponding to the oil inlet hole, of the lower surface of the magnetic head pressing block. The invention greatly reduces the processing difficulty of the electromagnetic component of the oil injector, improves the production efficiency and reduces the product cost.
Description
Technical Field
The invention belongs to an oil injection system of an internal combustion engine, and particularly relates to an oil injector electromagnetic assembly for a high-pressure common rail oil injection system.
Background
The magnetic head core 1 and the magnetic head pressing block 2 of the existing oil sprayer electromagnetic assembly are of an integral structure, please refer to fig. 4, the center hole of the magnetic head pressing block is in guiding fit with the armature shaft, and the wear resistance is required to be good; the lower end face of the magnetic head is welded to the magnetic core, and good weldability is required. The wear resistance is good, and the carbon content and the hardness of the material are high; good weldability requires low carbon content in the material. In order to meet the two requirements at the same time, the prior art is to perform carburizing and quenching on a low-carbon material and then grind off a carburized layer on the end face. In addition, the part of the armature shaft with smaller diameter at the lower section of the magnetic head structure in the prior art extends out of the end face to be longer, and the turning and cutting amount of the whole material is very large. Similarly, the upper-section oil return hole part of the magnetic head in the prior art is also longer, and the amount of the cutting materials is larger. Thirdly, when the magnetic head grinds the center hole and the small end face A in the prior art, if the clamping position is arranged at the position of an O-shaped ring groove B on the excircle of the magnetic head, the telescopic length of the chuck is very large, and the clamping precision is difficult to ensure; if the clamp is arranged at the excircle C connected with the tightening cap, the clamping precision is poor due to the machining precision of the excircle and the thermal treatment deformation. By combining the three points, the magnetic head in the prior art has higher processing cost and higher processing difficulty.
Therefore, the invention provides the oil injector electromagnetic assembly for the high-pressure common rail oil injection system, which greatly reduces the processing difficulty of the oil injector electromagnetic assembly, improves the production efficiency, reduces the product cost and is convenient to cope with the intense market competition.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the oil injector electromagnetic assembly for the high-pressure common rail oil injection system, which greatly reduces the processing difficulty of the oil injector electromagnetic assembly, improves the production efficiency and reduces the product cost so as to respond to intense market competition.
The invention is realized in this way, a fuel injector electromagnetic component for a high-pressure common rail fuel injection system comprises a magnetic head core shaft, a magnetic head pressing block, a magnetic core, an armature shaft and a spring; the magnetic head core shaft and the magnetic head pressing block are of split structures; the magnetic head core shaft is made of high-carbon steel, and the magnetic head pressing block is made of low-carbon steel;
the magnetic head core shaft comprises an oil return section positioned at the upper part, a magnetic head pressing block connecting section positioned in the middle and a magnetic core mounting section positioned at the lower part; an annular welding groove is formed at the joint of the oil return section and the magnetic head pressing block; the magnetic head pressing block connecting section and the magnetic core mounting section adopt a reducing structure, and the outer diameter of the magnetic core mounting section is smaller than that of the magnetic head pressing block connecting section; an oil inlet hole is formed in the magnetic core mounting section close to the magnetic head pressing block connecting section; an oil return hole, an oil passing hole and an armature shaft mounting hole which are communicated are arranged in the magnetic head core shaft from top to bottom at one time, and a spring is arranged between the armature shaft and the bottom surface of the oil passing hole; the magnetic head core shaft is inserted into a central hole of the magnetic head pressing block, and the magnetic head pressing block connecting section is fixedly connected with the inner end face of the central hole of the magnetic head pressing block in the annular welding groove in a welding mode;
the lower surface of the magnetic head pressing block is provided with an annular oil inlet groove corresponding to the position of the oil inlet hole, and the oil inlet hole is positioned in the annular oil inlet groove.
Preferably; the method comprises the following steps: the oil inlet is perpendicular to the axial direction of the magnetic head core shaft.
Preferably; the magnetic head pressing block connecting section is in interference fit with a center hole of the magnetic head pressing block, and the interference magnitude of the magnetic head pressing block connecting section is 0.002-0.008 mm.
Compared with the existing magnetic head core shaft and magnetic head pressing block integrated structure, the electromagnetic assembly of the oil sprayer has the advantages that the processing difficulty of the electromagnetic assembly of the oil sprayer is greatly reduced, the production efficiency is improved, and the product cost is reduced; in addition, the magnetic head core shaft is made of high-carbon steel material with higher wear resistance, and the magnetic head pressing block is made of low-carbon steel with better welding performance; the characteristics of the composite material are exerted during actual use, production and use, so that the production requirement and the use requirement are met, compared with the prior art, the composite material is kept consistent from the original use performance, and the service life is even superior to that of the prior art.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a magnetic head spindle structure;
FIG. 3 is a schematic view of a head compact structure;
fig. 4 is a schematic diagram of a prior art structure.
FIG. 1, a magnetic head spindle; 1-1, an oil return section; 1-2, a magnetic head pressing block connecting section; 1-3, a magnetic core mounting section; 1-4, an annular welding groove; 1-5, oil inlet holes; 1-6, oil return hole; 1-7 parts of oil passing holes; 1-8, armature shaft mounting holes; 2. a magnetic head briquetting; 2-1, an annular oil inlet groove; 3. a magnetic core; 4. an armature shaft; 5. a spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, an injector electromagnetic assembly for a high pressure common rail injection system includes a magnetic head core shaft 1, a magnetic head pressing block 2, a magnetic core 3, an armature shaft 4 and a spring 5; the magnetic head core shaft and the magnetic head pressing block adopt a split structure; the magnetic head core shaft is made of high-carbon steel materials, such as bearing steel, die steel and the like, and the magnetic head core shaft 1 is processed and formed on a core walking machine by a bar material which is a raw material in the first step; the second part is subjected to quenching treatment; and the third part is grinding processing, namely, processing a large excircle by using a through type centerless grinder, and grinding a small end face D and an armature shaft mounting hole 1-8 by clamping the large excircle. The magnetic head pressing block is made of low-carbon steel; for example, 20CrMo is firstly subjected to thermal refining and then is processed and formed once again, and the middle hole is ensured to be coaxial with the outer circle and vertical to the lower end face. The magnetic head core shaft 1 and the magnetic head pressing block 2 are made of two different materials, namely the abrasive resistance of the magnetic head pressing block is lower than that of the magnetic head core shaft, but the welding performance is better than that of the magnetic head core shaft; therefore, the welding requirement is ensured, and the service life of the easily damaged magnetic head mandrel is also ensured.
The magnetic head core shaft 1 comprises an oil return section 1-1 positioned at the upper part, a magnetic head pressure block connecting section 1-2 positioned in the middle and a magnetic core mounting section 1-3 positioned at the lower part; an annular welding groove 1-4 is arranged at the joint of the oil return section and the magnetic head pressing block; the magnetic head pressing block connecting section and the magnetic core mounting section adopt a reducing structure, and the outer diameter of the magnetic core mounting section is smaller than that of the magnetic head pressing block connecting section; an oil inlet hole 1-5 is arranged on the magnetic core mounting section near the magnetic head pressing block connecting section; the magnetic head core shaft is internally provided with through oil return holes 1-6, oil passing holes 1-7 and armature shaft mounting holes 1-8 from top to bottom at one time, and a spring 5 is arranged between the armature shaft and the bottom surface of the oil passing hole; the magnetic head core shaft is inserted into a central hole of the magnetic head pressing block, and the magnetic head pressing block connecting section is fixedly connected with the inner end face of the central hole of the magnetic head pressing block in the annular welding groove in a welding mode; the lower surface of the magnetic head pressing block 2 is provided with an annular oil inlet groove 2-1 corresponding to the position of the oil inlet hole, the oil inlet hole is positioned in the annular oil inlet groove, other structures of the magnetic head pressing block are the same as those of the prior art, and the lower end surface of the magnetic head pressing block is matched and welded with the magnetic core.
Preferably; the oil inlet is perpendicular to the axial direction of the magnetic head core shaft.
Preferably; the magnetic head pressing block connecting section is in interference fit with a center hole of the magnetic head pressing block, and the interference magnitude of the magnetic head pressing block connecting section is 0.002-0.008 mm.
Compared with the existing integrated structure of the magnetic head core shaft and the magnetic head pressing block, the integrated structure of the magnetic head core shaft and the magnetic head pressing block greatly reduces the processing difficulty of the electromagnetic assembly of the oil sprayer, improves the production efficiency and reduces the product cost; in addition, the magnetic head core shaft is made of high-carbon steel material with higher wear resistance, and the magnetic head pressing block is made of low-carbon steel with better welding performance; the characteristics of the composite material are exerted during actual use, production and use, so that the production requirement and the use requirement are met, compared with the prior art, the composite material is kept consistent from the original use performance, and the service life is even superior to that of the prior art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. An oil injector electromagnetic assembly for a high-pressure common rail oil injection system comprises a magnetic head core shaft, a magnetic head pressing block, a magnetic core, an armature shaft and a spring; the magnetic head core shaft and the magnetic head pressing block are of split structures; the magnetic head core shaft is made of high-carbon steel, and the magnetic head pressing block is made of low-carbon steel;
the magnetic head core shaft comprises an oil return section positioned at the upper part, a magnetic head pressing block connecting section positioned in the middle and a magnetic core mounting section positioned at the lower part; an annular welding groove is formed at the joint of the oil return section and the magnetic head pressing block; the magnetic head pressing block connecting section and the magnetic core mounting section adopt a reducing structure, and the outer diameter of the magnetic core mounting section is smaller than that of the magnetic head pressing block connecting section; an oil inlet hole is formed in the magnetic core mounting section close to the magnetic head pressing block connecting section; an oil return hole, an oil passing hole and an armature shaft mounting hole which are communicated are arranged in the magnetic head core shaft from top to bottom at one time, and a spring is arranged between the armature shaft and the bottom surface of the oil passing hole; the magnetic head core shaft is inserted into a central hole of the magnetic head pressing block, and the magnetic head pressing block connecting section is fixedly connected with the inner end face of the central hole of the magnetic head pressing block in the annular welding groove in a welding mode;
the lower surface of the magnetic head pressing block is provided with an annular oil inlet groove corresponding to the position of the oil inlet hole, and the oil inlet hole is positioned in the annular oil inlet groove.
2. The injector solenoid assembly of claim 1, wherein: the oil inlet is perpendicular to the axial direction of the magnetic head core shaft.
3. The injector solenoid assembly of claim 1, wherein: the magnetic head pressing block connecting section is in interference fit with a center hole of the magnetic head pressing block, and the interference magnitude of the magnetic head pressing block connecting section is 0.002-0.008 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110955552.8A CN113915038A (en) | 2021-08-19 | 2021-08-19 | Oil injector electromagnetic assembly for high-pressure common rail oil injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110955552.8A CN113915038A (en) | 2021-08-19 | 2021-08-19 | Oil injector electromagnetic assembly for high-pressure common rail oil injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113915038A true CN113915038A (en) | 2022-01-11 |
Family
ID=79233060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110955552.8A Pending CN113915038A (en) | 2021-08-19 | 2021-08-19 | Oil injector electromagnetic assembly for high-pressure common rail oil injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113915038A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660770A (en) * | 1985-09-25 | 1987-04-28 | United Technologies Diesel Systems, Inc. | Electromagnetic fuel injector |
| DE19736682A1 (en) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Fuel injector for internal combustion engine |
| US6163011A (en) * | 1997-12-11 | 2000-12-19 | Denso Corporation | Structure of and method for laser welding metal members and fuel injection valve |
| WO2001055585A1 (en) * | 2000-01-26 | 2001-08-02 | Hitachi, Ltd. | Electromagnetic fuel injector |
| JP2002263853A (en) * | 2001-03-08 | 2002-09-17 | Nippon Steel Corp | Method for assembling and welding high-temperature mechanical component |
| JP2010019215A (en) * | 2008-07-14 | 2010-01-28 | Denso Corp | Fuel injection device |
| JP2010174849A (en) * | 2009-02-02 | 2010-08-12 | Denso Corp | Solenoid valve and fuel injection valve |
| CN104314725A (en) * | 2014-09-25 | 2015-01-28 | 辽宁新风企业集团有限公司 | Middle hole pressure storage static leakage-free oil sprayer |
| CN209781107U (en) * | 2019-04-17 | 2019-12-13 | 无锡格林鲍尔科技有限公司 | Armature of hydraulic control common rail oil injector |
| DE102019218052A1 (en) * | 2019-11-22 | 2021-05-27 | Robert Bosch Gmbh | Injector with improved corrosion resistance on weld seams |
| CN215979662U (en) * | 2021-08-19 | 2022-03-08 | 北油电控燃油喷射***(天津)有限公司 | Magnetic head mandrel for high-pressure common rail oil injector |
| CN215979664U (en) * | 2021-08-19 | 2022-03-08 | 北油电控燃油喷射***(天津)有限公司 | Oil injector electromagnetic assembly for high-pressure common rail oil injection system |
-
2021
- 2021-08-19 CN CN202110955552.8A patent/CN113915038A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4660770A (en) * | 1985-09-25 | 1987-04-28 | United Technologies Diesel Systems, Inc. | Electromagnetic fuel injector |
| DE19736682A1 (en) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Fuel injector for internal combustion engine |
| US6163011A (en) * | 1997-12-11 | 2000-12-19 | Denso Corporation | Structure of and method for laser welding metal members and fuel injection valve |
| WO2001055585A1 (en) * | 2000-01-26 | 2001-08-02 | Hitachi, Ltd. | Electromagnetic fuel injector |
| JP2002263853A (en) * | 2001-03-08 | 2002-09-17 | Nippon Steel Corp | Method for assembling and welding high-temperature mechanical component |
| JP2010019215A (en) * | 2008-07-14 | 2010-01-28 | Denso Corp | Fuel injection device |
| JP2010174849A (en) * | 2009-02-02 | 2010-08-12 | Denso Corp | Solenoid valve and fuel injection valve |
| CN104314725A (en) * | 2014-09-25 | 2015-01-28 | 辽宁新风企业集团有限公司 | Middle hole pressure storage static leakage-free oil sprayer |
| CN209781107U (en) * | 2019-04-17 | 2019-12-13 | 无锡格林鲍尔科技有限公司 | Armature of hydraulic control common rail oil injector |
| DE102019218052A1 (en) * | 2019-11-22 | 2021-05-27 | Robert Bosch Gmbh | Injector with improved corrosion resistance on weld seams |
| CN215979662U (en) * | 2021-08-19 | 2022-03-08 | 北油电控燃油喷射***(天津)有限公司 | Magnetic head mandrel for high-pressure common rail oil injector |
| CN215979664U (en) * | 2021-08-19 | 2022-03-08 | 北油电控燃油喷射***(天津)有限公司 | Oil injector electromagnetic assembly for high-pressure common rail oil injection system |
Non-Patent Citations (1)
| Title |
|---|
| 孟炜等: "PP71喷油器壳体合件的焊接工艺研究", 现代车用动力, no. 01, 28 February 2006 (2006-02-28), pages 44 - 46 * |
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