CN101798978B - Electronic control split-type fuel injector - Google Patents
Electronic control split-type fuel injector Download PDFInfo
- Publication number
- CN101798978B CN101798978B CN2010101349346A CN201010134934A CN101798978B CN 101798978 B CN101798978 B CN 101798978B CN 2010101349346 A CN2010101349346 A CN 2010101349346A CN 201010134934 A CN201010134934 A CN 201010134934A CN 101798978 B CN101798978 B CN 101798978B
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- fuel
- valve body
- fuel injector
- stress bar
- split
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Abstract
The invention relates to an electronic control split-type fuel injector. A fuel injection stress bar is arranged in the shell of the split-type fuel injector; an annular seal surface is arranged between a seal head at the lower end of the stress bar and the shell; the upper part of the stress bar is provided with a retaining nut, a stress regulating nut and a locking nut; a fuel hole is arranged in the middle part of the shell; the middle part of the valve body of the high-speed electromagnetic valve is provided with a valve core; the valve core is provided with a fuel passing slot; one side of the middle part of the valve body is provided with a fuel outlet; the fuel outlet is communicated with the middle part of the valve body and is butted and communicated with the fuel hole of the split-type fuel injector; and the other side of the valve body is provided with a high-pressure fuel inlet and a fuel return hole. When the high-speed electromagnetic valve moves up, the oil passing slot is connected across between the fuel inlet and the fuel outlet, and the high-pressure fuel is conducted and is injected from the annular seal surface of the fuel injector. Since the outlet pressure of the fuel injected by the fuel injector is high and the injecting angle is good, the atomization condition of the fuel is better and the combustion efficiency is higher.
Description
Technical field
The invention belongs to internal-combustion engine oil sprayer technical field.
Background technique
In the prior art, the internal-combustion engine oil sprayer is divided into two types, and one type is hole nozzle; Another kind of is axial needle type injector, and there is common shortcoming in two types of oil sprayers, has a trapped fuel district in the hole nozzle; Its final nozzle opening area is fixed, and the fogging degree of oil spout is affected; Axial needle type injector oil spout area is less, and spray cone angle is little, and atomizing back elaioleucite is more concentrated, is unfavorable for the even mixing of oil and air; Two types of oil sprayers are in that to add the man-hour precision prescribed higher, and the penetration degree of elaioleucite is big during oil spout, and abundant for the oil mist combustion that makes ejection, the shaped design of its firing chamber is complicated, and surface to volume ratio is bigger, has reduced combustion efficiency.In addition, the fuel injection quantity of existing oil sprayer and injection time receive the influence of fuel injection duration, have the Passive Control phenomenon, are unfavorable for accurate control.
Summary of the invention
The present invention is directed to that oil sprayer in the existing technology exists to add the man-hour precision prescribed higher; The penetration degree of elaioleucite is big during oil spout; Fuel-oil atmozation is insufficient; The bigger problem of fuel injection quantity and injection time control difficulty provides that a kind of fuel spray cone angle is big, atomizing effect is better, processing and the easy electronic control split-type fuel injector of working condition control.This oil sprayer technological scheme be:
A kind of electronic control split-type fuel injector, split-type fuel injector mainly are made up of housing, oil spout stress bar, seal ring, set screw nut, stress adjusting nut and locking nut, on its split-type fuel injector, high-speed electromagnetic valve are installed; The oil spout stress bar is installed in enclosure interior, has oilhole at the middle part of housing, leaves oil duct between housing and the stress bar; The stress bar lower end is processed with circulating tanks and sealing head, and an annular sealing surface is arranged between sealing head and the housing, and oil duct is communicated with annular sealing surface through circulating tanks; High pressure fuel is in high-speed electromagnetic valve gets into the oil duct of split-type fuel injector, and the stress bar produces elastic strain, the stress bar elongation; A uniform circular gap occurs at the sealing head of stress bar and the sealing surface place between the housing, high pressure fuel sprays from the gap, forms mist of oil; Set screw nut is installed in the top of stress bar; Be processed with outside thread on the set screw nut, seal ring is installed in the lower end of set screw nut, and stress adjusting nut and locking nut are installed in the upper end of stress bar.
Adopt technique scheme, high pressure fuel is got into by the filler opening of high-speed electromagnetic valve, through getting into split-type fuel injector by oilhole behind the spool; Rely on the high pressure of fuel oil self; Make the stress bar of oil sprayer produce elastic strain, the stress bar elongation makes the sealing head of stress bar and the sealing surface between the housing uniform circular gap occur; High pressure oil sprays from the gap, forms mist of oil.
In high-speed electromagnetic valve; Spool is moved up and down by the magnetic force of electromagnetic coil and the acting in conjunction of spring force; When spool moves down, stagger in the position of crossing oil groove and filler opening on the spool, and high pressure fuel is closed; Oil sprayer does not produce oil spout, and the seepage oil that occurs in the slit between spool and the valve body flows out this device by return port; When moving on the spool, cross oil groove and be connected across between filler opening and the oil outlet high pressure fuel conducting, oil sprayer oil spout.
Because the angle of inclination ratio of the annular sealing surface between sealing head and the housing is easier to processing, so design and the manufacturing easily of the spray cone angle of fuel oil, be fit to desirable hemispherical combustion chamber's shape; Through bigger pressure the stress bar elastic elongation is formed owing to spray the gap of oil, and sealing oil spout face is bigger, and can carries out independently full electronic control injection; Thereby the fuel outlet pressure that ejects is big; Its atomizing situation is better, and mist of oil is when burning, and the efficient of burning will improve greatly.
Description of drawings
Fig. 1 is a cross-sectional view of the present invention;
Embodiment
Embodiment: as shown in Figure 1, a kind of electronic control split-type fuel injector, split-type fuel injector mainly are made up of housing 7, oil spout stress bar 4, seal ring 8, set screw nut 9, stress adjusting nut 10 and locking nut 11, on its split-type fuel injector, high-speed electromagnetic valve are installed; Oil spout stress bar 4 is installed in housing 7 inside, has oilhole 6 at the middle part of housing 7, leaves oil duct 5 between housing 7 and the stress bar 4; Stress bar 4 lower ends are processed with circulating tanks 3 and sealing head 1, and an annular sealing surface 2 is arranged between sealing head 1 and the housing 7, and oil duct 5 is communicated with annular sealing surface 2 through circulating tanks 3; High pressure fuel is in high-speed electromagnetic valve gets into the oil duct 5 of split-type fuel injector, and stress bar 4 produces elastic strain, stress bar 4 elongations; A uniform circular gap occurs at the sealing head 1 of stress bar 4 and sealing surface 2 places between the housing 7, high pressure fuel sprays from the gap, forms mist of oil; Set screw nut 9 is installed in the top of stress bar 4; Be processed with outside thread on the set screw nut 9, seal ring 8 is installed in the lower end of set screw nut 9, and stress adjusting nut 10 and locking nut 11 are installed in the upper end of stress bar 4.
High-speed electromagnetic valve is made up of the filler opening 16 and the return port 17 of valve body 15, spool 19, spring 14, armature 13, electromagnetic coil 12, cushion pad 20, high pressure fuel; Spool 19 is installed in valve body 15 middle parts of high-speed electromagnetic valve; Had oil groove 18 on the spool 19, spring 14 is installed in the epicoele on spool 19 tops with armature 13, and cushion pad 20 is installed in the cavity of resorption of spool 19 lower ends; Electromagnetic coil 12 is installed in armature 13 upper ends; Valve body 15 middle parts one side has oilhole 21, and oilhole 21 connects the valve bodies middle part and is docked and connected with oilhole 6 on the split-type fuel injector, and the filler opening 16 and the fluid return port 17 of high pressure fuel is processed in the opposite side of valve body 15; Filler opening 16 is communicated with the valve body middle part, and return port 17 is communicated with the upper and lower chamber of valve body.
Claims (2)
1. electronic control split-type fuel injector; It is characterized in that: split-type fuel injector mainly is made up of housing (7), oil spout stress bar (4), seal ring (8), set screw nut (9), stress adjusting nut (10) and locking nut (11), on its split-type fuel injector, high-speed electromagnetic valve is installed; Oil spout stress bar (4) is installed in housing (7) inside, has oilhole (6) at the middle part of housing (7), leaves oil duct (5) between housing (7) and the stress bar (4); Stress bar (4) lower end is processed with circulating tanks (3) and sealing head (1), between sealing head (1) and the housing (7) annular sealing surface (2) is arranged, and oil duct (5) is communicated with annular sealing surface (2) through circulating tanks (3); High pressure fuel is in high-speed electromagnetic valve gets into the oil duct (5) of split-type fuel injector; Stress bar (4) produces elastic strain, and stress bar (4) elongation locates to occur a uniform circular gap at the sealing head (1) of stress bar (4) and the sealing surface (2) between the housing (7); High pressure fuel sprays from the gap; Form mist of oil, set screw nut (9) is installed in the top of stress bar (4), and set screw nut is processed with outside thread on (9); Seal ring (8) is installed in the lower end of set screw nut (9), and stress adjusting nut (10) and locking nut (11) are installed in the upper end of stress bar (4).
2. electronic control split-type fuel injector according to claim 1 is characterized in that: high-speed electromagnetic valve is made up of the filler opening (16) and the return port (17) of valve body (15), spool (19), spring (14), armature (13), electromagnetic coil (12), cushion pad (20), high pressure fuel; Spool (19) is installed in valve body (15) middle part of high-speed electromagnetic valve; Had oil groove (18) on the spool (19), spring (14) and armature (13) are installed in the epicoele on spool (19) top, and cushion pad (20) is installed in the cavity of resorption of spool (19) lower end; Electromagnetic coil (12) is installed in armature (13) upper end; Valve body (15) middle part one side has oilhole (21), and oilhole (21) connects the valve body middle part and is docked and connected with oilhole (6) on the split-type fuel injector, and filler opening of high pressure fuel (16) and fluid return port (17) are processed in the opposite side of valve body (15); Filler opening (16) is communicated with the valve body middle part, and return port (17) is communicated with the upper and lower chamber of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101349346A CN101798978B (en) | 2010-03-24 | 2010-03-24 | Electronic control split-type fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101349346A CN101798978B (en) | 2010-03-24 | 2010-03-24 | Electronic control split-type fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101798978A CN101798978A (en) | 2010-08-11 |
| CN101798978B true CN101798978B (en) | 2012-04-04 |
Family
ID=42594794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101349346A Expired - Fee Related CN101798978B (en) | 2010-03-24 | 2010-03-24 | Electronic control split-type fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101798978B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896164A (en) * | 1981-12-02 | 1983-06-08 | Nissan Motor Co Ltd | Fuel injection nozzle |
| US4909444A (en) * | 1988-10-17 | 1990-03-20 | General Motors Corporation | Poppet covered orifice fuel injection nozzle |
| JP2832555B2 (en) * | 1990-03-23 | 1998-12-09 | 株式会社ゼクセル | Electromagnetic fuel injection valve |
| FR2854664B1 (en) * | 2003-05-09 | 2006-06-30 | Renault Sa | FLUID INJECTION DEVICE |
-
2010
- 2010-03-24 CN CN2010101349346A patent/CN101798978B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101798978A (en) | 2010-08-11 |
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Granted publication date: 20120404 Termination date: 20150324 |
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| EXPY | Termination of patent right or utility model |