CN101798978A - Electronic control split-type fuel injector - Google Patents
Electronic control split-type fuel injector Download PDFInfo
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- CN101798978A CN101798978A CN 201010134934 CN201010134934A CN101798978A CN 101798978 A CN101798978 A CN 101798978A CN 201010134934 CN201010134934 CN 201010134934 CN 201010134934 A CN201010134934 A CN 201010134934A CN 101798978 A CN101798978 A CN 101798978A
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- fuel
- valve body
- fuel injector
- split
- type fuel
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Abstract
The invention relates to an electronic control split-type fuel injector which is formed by assembling a split-type fuel injector and a high-speed electromagnetic valve. 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, 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 classes, and a class is a hole nozzle, another kind of is axial needle type injector, and there is common shortcoming in two class 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 class oil sprayers are in that to add the man-hour precision prescribed higher, and the penetration degree of elaioleucite is big during oil spout, for the oil mist combustion that makes ejection abundant, the shaped design complexity of its firing chamber, surface to volume ratio is bigger, has reduced combustion efficiency.In addition, the fuel injection quantity of existing oil sprayer and injection time are subjected to 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 prior art exists to add the man-hour precision prescribed higher, the penetration degree of elaioleucite is big during oil spout, fuel-oil atmozation is insufficient, fuel injection quantity and the bigger problem of injection time control difficulty, provide 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, this oil sprayer is assembled by split-type fuel injector and high-speed electromagnetic valve; The enclosure interior of split-type fuel injector is equipped with the oil spout stress bar, be processed with oil duct between housing and the stress bar, there is a sealing head stress bar lower end, an annular sealing surface is arranged between sealing head and the housing, and oil duct is communicated with annular sealing surface by circulating tanks, and the top of housing is equipped with set screw nut, be processed with outside thread on the set screw nut, the lower end of set screw nut is equipped with seal ring, and the stress adjusting nut and the locking nut of stress bar is installed in the upper end of stress bar, has oilhole at the middle part of housing; Spool is equipped with at the valve body middle part of high-speed electromagnetic valve, had oil groove on the spool, spring and armature are housed in the epicoele on spool top, in the cavity of resorption of spool lower end cushion pad is installed, the armature upper end is equipped with electromagnetic coil, valve body middle part one side has oil outlet, oil outlet is communicated with the valve body middle part and is docked and connected with oilhole on the split-type fuel injector, the opposite side of valve body has the filler opening of high pressure fuel, filler opening is communicated with the valve body middle part, side of valve body also has a fluid return port, and return port is communicated with the upper and lower chamber of valve body.
Adopt technique scheme, high pressure fuel is entered by the filler opening of high-speed electromagnetic valve, enter split-type fuel injector through behind the spool by oilhole, 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, 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, therefore the spray cone angle of fuel oil design and manufacturing easily, be fit to desirable hemispherical combustion chamber's shape, by 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, this oil sprayer is assembled by split-type fuel injector and high-speed electromagnetic valve.
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; Oil spout stress bar 4 is installed in housing 7 inside, leave 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, an annular sealing surface 2 is arranged between sealing head 1 and the housing 7, oil duct 5 is communicated with annular sealing surface 2 by circulating tanks 3, 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, stress adjusting nut 10 and locking nut 11 are installed in the upper end of stress bar 4, have oilhole 6 at the middle part of housing 7;
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 and armature 13 are installed in the epicoele on spool 19 tops, 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, oilhole 21 is communicated with the valve bodies middle part and is docked and connected with oilhole 6 on the split-type fuel injector, the filler opening 16 of high pressure fuel and 17 processing of fluid return port are at 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 (3)
1. electronic control split-type fuel injector is characterized in that: on its split-type fuel injector high-speed electromagnetic valve is installed.
2. electronic control split-type fuel injector according to claim 1 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); Oil spout stress bar (4) is installed in housing (7) inside, leave 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, oil duct (5) is communicated with annular sealing surface (2) by circulating tanks (3), set screw nut (9) is installed in the top of stress bar (4), set screw nut is processed with outside thread on (9), seal ring (8) is installed in the lower end of set screw nut (9), stress adjusting nut (10) and locking nut (11) are installed in the upper end of stress bar (4), have oilhole (6) at the middle part of housing (7).
3. split-type fuel injector according to claim 2 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, 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), oilhole (21) is communicated with the valve body middle part and is docked and connected with oilhole (6) on the split-type fuel injector, filler opening of high pressure fuel (16) and fluid return port (17) processing are at the opposite side of valve body (15), filler opening (16) is communicated with the valve body middle part, on return port (17) and the valve body, cavity of resorption is communicated with.
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 true CN101798978A (en) | 2010-08-11 |
| CN101798978B 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) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896164A (en) * | 1981-12-02 | 1983-06-08 | Nissan Motor Co Ltd | Fuel injection nozzle |
| EP0365130A1 (en) * | 1988-10-17 | 1990-04-25 | General Motors Corporation | Fuel injection nozzle |
| JP2832555B2 (en) * | 1990-03-23 | 1998-12-09 | 株式会社ゼクセル | Electromagnetic fuel injection valve |
| US7311273B2 (en) * | 2003-05-09 | 2007-12-25 | Renault S.A.S. | Fluid injection device |
-
2010
- 2010-03-24 CN CN2010101349346A patent/CN101798978B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896164A (en) * | 1981-12-02 | 1983-06-08 | Nissan Motor Co Ltd | Fuel injection nozzle |
| EP0365130A1 (en) * | 1988-10-17 | 1990-04-25 | General Motors Corporation | Fuel injection nozzle |
| JP2832555B2 (en) * | 1990-03-23 | 1998-12-09 | 株式会社ゼクセル | Electromagnetic fuel injection valve |
| US7311273B2 (en) * | 2003-05-09 | 2007-12-25 | Renault S.A.S. | Fluid injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101798978B (en) | 2012-04-04 |
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Granted publication date: 20120404 Termination date: 20150324 |
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| EXPY | Termination of patent right or utility model |