CN202937390U - Electromagnetic actuator for gasoline direct injection oil atomizer - Google Patents
Electromagnetic actuator for gasoline direct injection oil atomizer Download PDFInfo
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- CN202937390U CN202937390U CN 201220656687 CN201220656687U CN202937390U CN 202937390 U CN202937390 U CN 202937390U CN 201220656687 CN201220656687 CN 201220656687 CN 201220656687 U CN201220656687 U CN 201220656687U CN 202937390 U CN202937390 U CN 202937390U
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- valve body
- electromagnetic actuator
- iron core
- direct injection
- gasoline
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Abstract
The utility model discloses an electromagnetic actuator for a gasoline direct injection oil atomizer. The electromagnetic actuator comprises a valve body component, an electromagnetic component, an iron core, a spring and an armature. The valve body component is in a split structure and comprises an upper valve body, a magnetism shielding sleeve and a lower valve body, wherein the upper valve body is connected with the lower valve body through the magnetism shielding sleeve, the iron core is arranged inside the valve body component, the upper valve body and the lower valve body are made of permeability magnetic materials, and the magnetism shielding sleeve is made of non permeability magnetic materials. According to the electromagnetic actuator, the magnetism shielding sleeve is embedded between the upper valve body and the lower valve body, air gaps between the magnetism shielding sleeve and the iron core are increased due to the iron core with a small outer diameter, the magnetic circuit efficiency of the electromagnetic actuator is improved, electromagnetic force is increased, response time is shortened, the electromagnetic force is improved by 30%, and the response time is shortened by about 30%; the upper valve body, the lower valve body and the magnetism shielding sleeve are in a mortise and tenon joint structure, and accordingly assembly is convenient; the inside of the iron core is provided with a boss to fix the spring, and installation is easy and convenient; and installation steps are arranged on the valve bodies, so assembly of the electromagnetic component is precise, and consistency and reliability of the electromagnetic actuator are further improved.
Description
Technical field
The utility model relates to field of internal combustion engine, is a kind of Engine inner direct oil sprayer electromagnetic actuator.
Background technique
In recent years, along with the surge of city automobile owning amount, the energy particularly is becoming tight the supply day of oil, and vehicle exhaust also strengthens day by day on the impact of environment, improves Fuel Economy, reduces engine emission and seem especially urgent.
Late nineteen nineties in last century the MITSUBISHI Application and Development gasoline in-cylinder direct injection fuel injection system that takes the lead in, this system directly sprays into gasoline in cylinder, transient response is fast, charging efficiency is high, hydrocarbon emission is few, and is more accurate to the control of air fuel ratio.Have data to show, direct injection gasoline engine, fuel economy intake port injection petrol engine relatively in the past improves 25% left and right, and it is nearly 10% that power output also increases, and pollutant emission is corresponding minimizing also.Based on above-mentioned advantage, American-European also numerous and confused release in recent years has the Engine inner direct oil-fired system of independent intellectual property right.
The present home-produced fuel engine fuel oil system of China is mainly the port fuel injection system, this system sprays into intake duct or intake manifold and air with fuel oil and forms inflammable mixture, this mode gasoline atomizing is incomplete, mixed gas quality is not good enough, therefore burn insufficient, cold start emission and fuel economy are relatively poor.
Present oil sprayer electromagnetic actuator oil injector body is overall structure, and the material of employing is magnetic material, and leakage field is more, affects electromagnetic performance.Oil sprayer electromagnetic actuator speed of response is relatively slow, stability also is difficult to reach the requirement of gasoline in-cylinder direct injection.Place to go part material when carrying out machining processes in order to reduce leakage field on the unit injector body, its wall thickness of attenuate reduces the leakage field passage, thereby reaches the purpose that reduces leakage field.But this method has also reduced the intensity of oil injector body simultaneously, and can only reduce the fraction leakage field, and effect is little.
Summary of the invention
The utility model purpose is to provide a kind of new structure electromagnetic actuator for gasoline direct spray oil sprayer, and component are easy to assembly accurately, and are stable and reliable for performance, can reach the fast response characteristic requirement of Engine inner direct.
The utility model adopts following technological scheme for achieving the above object:
A kind of gasoline in-cylinder direct injection oil sprayer electromagnetic actuator comprises valve body parts, electromagnetic component, iron core, spring, armature is characterized in that, described valve body parts is split-type structural, comprises upper valve body, magnetic shield and lower valve body three parts, and upper valve body and lower valve body link together by magnetic shield; Iron core is equipped with in valve body parts inside; Described upper valve body, lower valve body material are permeability magnetic material, and the magnetic shield material is non-magnet material.
It is further characterized in that: adopt joinery and its construction to be connected between described magnetic shield two ends and upper valve body, lower valve body, adopt the interference fit compression.
It is further characterized in that: described core interior has the boss larger than iron core internal diameter, is used for spring fitting and locates.
Described mandrel lower periphery has the step less than armature external diameter, makes between iron core part and magnetic shield and forms annular gap.Described annular gap radial width is 0.1mm to 2mm, and axial height is 0.1mm to 12mm.
Described lower valve outer wall has step, is used for the location electromagnetic component.
The beneficial effect that compared to the prior art the utility model has: inlay magnetic shield between the valve body of up and down, add the magnetic shield of little external diameter iron core increase and the air gap between iron core, improved electromagnetic actuator magnetic circuit efficient, thereby improved electromagnetic force and shorten the response time.According to analog computation analysis and verification experimental verification, this structure compared with prior art, electromagnetic force improves 30%, the response time shortens nearly 30%; Up and down valve body and magnetic shield adopt similar joinery and its construction, and be easy to assembly; At core interior design boss fixing spring, simple installation; Ad hoc installation step makes the electromagnetic component assembling accurately on valve body, can further improve conformity and the reliability of electromagnetic actuator.
Description of drawings
Fig. 1 is the utility model one embodiment's oil sprayer electromagnetic actuator structural representation.
Fig. 2 is the utility model oil sprayer electromagnetic actuator valve body parts structural representation.
Fig. 3-5th, the another several mode of execution assembly structure schematic diagram of the utility model oil sprayer electromagnetic actuator valve body parts.
In figure: 1. electromagnetic actuator, 2. valve body parts, 3. electromagnetic component, 4. iron core, 41. the iron core boss, 42. iron core steps, air gap between 43. iron cores and magnetic shield, 5. spring, 6. armature, 21. upper valve bodies, 22. magnetic shield, joinery and its construction between 221. upper valve bodies and magnetic shield, joinery and its construction between 222. times valve bodies and magnetic shield, 23. lower valve body, 231. electromagnetic component installation steps, 31. housings, 32. skeleton, 33. coils, 34. plastic packagings.
Embodiment
Describe structure characteristic and working condition according to the specific embodiment that the utility model proposes in detail below in conjunction with accompanying drawing 1, Fig. 2.
Embodiment: Fig. 1 is gasoline direct spray oil sprayer electromagnetic actuator 1 structural representation.This electromagnetic actuator is comprised of valve body parts 2, electromagnetic component 3, iron core 4, spring 5, armature 6, and wherein upper valve body 21, magnetic shield 22, lower valve body 23 form valve body parts, and housing 31, skeleton 32, coil 33, plastic packaging 34 form electromagnetic component 3.
Upper valve body 21 adopts permeability magnetic material with lower valve body 23, and magnetic shield 22 adopts non-magnet material.At first upper valve body 21 lower ends aimed at magnetic shield 22 upper end joinery and its constructions and passed through the interference fit compression fit, laser bonding is fixed simultaneously, then same method press in lower valve body 23 upper ends and magnetic shield 22 joinery and its construction positions, lower end assemble, composition valve body parts 2.
Iron core 4 is pressed into valve body parts inside, laser bonding behind special tool adjustment location, then spring 5 is put into iron core 4 inside.Armature 6 is put into valve body parts inside, first fit with iron core 4, then control the air gap of 6, iron core 4 and armature by the special tool adjustment.
Iron core 4 inside have the boss 41 larger than iron core internal diameter, be used for spring 5 location is installed.
Iron core 4 lower, outer perimeter have the step 42 less than armature external diameter, make between iron core 4 parts and magnetic shield 22 and form annular gap 43.Described annular gap 43 radial width are 0.1mm to 2mm, and axial height is 0.1mm to 12mm.
Take skeleton 32 as the axle center, after electromagnetic wire is become coil 33 around skeleton 32 sandwich wounds, be placed in housing 31 the rear composition electromagnetic component 3 of plastic packaging 34.Its middle shell 31 is permeability magnetic material, and electromagnetic wire is temperature resistant grade material more than 200 ℃.
Electromagnetic component 3 is placed on valve body parts 2 outsides, is directly installed on lower valve body 23 that on electromagnetic component assembly bench rank 231, laser bonding gets final product, easy to assembly quick, to improve the electromagnetic actuator consistency of performance, stability has very great help.
The electromagnetic actuator working principle:
When ECU receive instruction to coil 33 energising after, around coil 33, iron core 4, upper valve body 21, housing 31, lower valve body 23 and 6, armature form toroid, produce an attraction force at iron core 4 and 6, armature, make armature 6 overcome spring 5 power to iron core 4 direction motions, thereby the drive needle valve movement makes the oil sprayer oilhole open commencement of fuel injection.When the oil mass of spraying met the demands, ECU provided the instruction outage, and magnetic circuit disappears, and the attraction force that iron core 4 and armature are 6 makes zero, and armature 6 falls rapidly under the effect of spring 5 power, and needle-valve is taken a seat, end of injection.
Claims (6)
1. gasoline in-cylinder direct injection oil sprayer electromagnetic actuator, comprise valve body parts, electromagnetic component, iron core, spring, armature, it is characterized in that, described valve body parts is split-type structural, comprises upper valve body, magnetic shield and lower valve body three parts, and upper valve body and lower valve body link together by magnetic shield; Iron core is equipped with in valve body parts inside; Described upper valve body, lower valve body material are permeability magnetic material, and the magnetic shield material is non-magnet material.
2. gasoline in-cylinder direct injection oil sprayer electromagnetic actuator according to claim 1 is characterized in that: adopt joinery and its construction to be connected between described magnetic shield two ends and upper valve body, lower valve body, adopt the interference fit compression.
3. gasoline in-cylinder direct injection oil sprayer electromagnetic actuator according to claim 1, it is characterized in that: described core interior has the boss larger than iron core internal diameter, is used for the spring fitting location.
4. gasoline in-cylinder direct injection oil sprayer electromagnetic actuator according to claim 1, it is characterized in that: described mandrel lower periphery has the step less than armature external diameter, makes between iron core part and magnetic shield and forms annular gap.
5. gasoline in-cylinder direct injection oil sprayer electromagnetic actuator according to claim 4, it is characterized in that: described annular gap radial width is 0.1mm to 2mm, axial height is 0.1mm to 12mm.
6. gasoline in-cylinder direct injection oil sprayer electromagnetic actuator according to claim 1, it is characterized in that: described lower valve outer wall has step, is used for the location electromagnetic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220656687 CN202937390U (en) | 2012-12-04 | 2012-12-04 | Electromagnetic actuator for gasoline direct injection oil atomizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220656687 CN202937390U (en) | 2012-12-04 | 2012-12-04 | Electromagnetic actuator for gasoline direct injection oil atomizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937390U true CN202937390U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220656687 Expired - Lifetime CN202937390U (en) | 2012-12-04 | 2012-12-04 | Electromagnetic actuator for gasoline direct injection oil atomizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN202937390U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152362A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Novel structure fuel injector |
| CN107152363A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Fuel injector magnetic structure |
| CN108397327A (en) * | 2018-03-28 | 2018-08-14 | 柳州源创电喷技术有限公司 | Main shaft for big flow electromagnetic type injector |
| CN112652440A (en) * | 2020-12-14 | 2021-04-13 | 深圳先进技术研究院 | Electromagnetic coil sheath, coil assembly and magnetorheological damper |
| CN114439659A (en) * | 2022-02-07 | 2022-05-06 | 南岳电控（衡阳）工业技术股份有限公司 | High-pressure gasoline injector |
-
2012
- 2012-12-04 CN CN 201220656687 patent/CN202937390U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152362A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Novel structure fuel injector |
| CN107152363A (en) * | 2017-07-03 | 2017-09-12 | 浙江凯利智控科技有限公司 | Fuel injector magnetic structure |
| CN108397327A (en) * | 2018-03-28 | 2018-08-14 | 柳州源创电喷技术有限公司 | Main shaft for big flow electromagnetic type injector |
| CN112652440A (en) * | 2020-12-14 | 2021-04-13 | 深圳先进技术研究院 | Electromagnetic coil sheath, coil assembly and magnetorheological damper |
| CN114439659A (en) * | 2022-02-07 | 2022-05-06 | 南岳电控（衡阳）工业技术股份有限公司 | High-pressure gasoline injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170614 Address after: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee after: China Faw Co.,Ltd. Address before: 214061 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee before: CHINA FAW CORP LTD WUXI FUEL INJECTION EQUIPMENT RES INST,CHINA FIRST AUTOMOBILE WORKS |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |