CN1469040A - Improved oil nozzle ofr diesel oil burning internal combustion engine - Google Patents
Improved oil nozzle ofr diesel oil burning internal combustion engine Download PDFInfo
- Publication number
- CN1469040A CN1469040A CNA021360936A CN02136093A CN1469040A CN 1469040 A CN1469040 A CN 1469040A CN A021360936 A CNA021360936 A CN A021360936A CN 02136093 A CN02136093 A CN 02136093A CN 1469040 A CN1469040 A CN 1469040A
- Authority
- CN
- China
- Prior art keywords
- oil
- internal combustion
- sliding spool
- oil cylinder
- chewed
- 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
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The improved oil nozzle for diesel oil burning internal combustion engine has increased base diameter of sealing conic surface in the sliding plunger and ratio between the plunger diameter to the base diameter reduced from available 0.6 to 0.45, so that the present invention has high start spraying pressure and no secondary spray phenomenon. In addition, one equal-cross section annular passage is formed between the cylindrical head of the sliding plunger and the spraying oil cylinder and the relatively large head size can arrange more nozzle holes, so that the present invention has short fuel jet period, fine jetted fuel oil grain, and improved engine performance.
Description
Technical field
The present invention relates to the fueling injection equipment of diesel engine oil supply system, especially a kind of can be with the oil injecting nozzle of fuel oil super-fine atomization.
Background technique:
The diesel engine nozzle of prior art is made up of the plunger and the oil cylinder of a pair of accurate cooperation.The top of plunger is a cone, and cone has sharp-pointed top, and the cone flank face of cone afterbody constitutes the conical surface of sealing with the in-oil cylinder conical surface, and control high pressure fuel oil enters the passage of You Zui jet chamber.A cylindrical cavity is arranged at the bottom of the in-oil cylinder conical surface, be distributed with several nozzle openings on the surface of this cylindrical cavity, when sliding spool is in closed condition, between sliding spool and the spraying oil cylinder a bigger garden cylindrical cavity arranged, can store fuel oil, be referred to as the jet chamber usually.In the prior art, because the plunger diameter of sliding spool is all bigger with the ratio of the area of contour of sealing cone, generally greater than more than 0.6, cause thus to close valve pressure bigger, it is little to open the spray and the pressure amplitude of closing, thereby causes easily and repeat repeatedly to spray, thereby influences the fuel-injected atomization quality, in addition, because closing pressure is big, also make the fuel-injected time lengthening, more than many drawbacks, the burning that all can cause fuel oil is abundant inadequately, has reduced the thermal efficiency of diesel engine.
Summary of the invention:
The objective of the invention is, design a kind of big flow, many spray orifices oil is chewed, and this oil is chewed and can be reduced fuel-injected and close valve pressure, shortens discharge time, finally stops to repeat the phenomenon of spraying, and power character, Economy, the thermal efficiency and the emission performance of motor are improved.
The technological scheme that the present invention takes is, strengthen the body diameter of sliding spool nose-circle facies basialis pyramidis, the cross section of fluid channel of fuel oil is increased, make the ratio of the area of contour between sliding spool diameter and the sealing cone bottom surface, from original being reduced to more than 0.6 about 0.4, simultaneously jet pressure is improved.In addition, by reducing the gap between sliding spool and the spraying oil cylinder, the cone on cancellation sliding spool top is top, reduces the volume of cylindrical cavity between sliding spool and the spraying oil cylinder, can further obtain the effect of refinement fuel spray particle diameter.Concrete measure is, the sliding spool top is a slightly socket cap of chamfering, the shape of the inner chamber of spraying oil cylinder and the profile of sliding spool head are in full accord, especially as one be anode membrane, another is a cavity block, between retain 0.15 mm clearance, form the annular pass of a standard, the width of this annular pass and the thickness of bottom are also equal, thereby become a bowl-shape jet chamber, and fuel oil sprays from nozzle opening through this annular pass.In addition, the spray orifice of spraying oil cylinder is evenly arranged in the head of its inverted cone, because the head dimensions of the taper of spraying oil cylinder is bigger, can satisfy the more nozzle hole number of design, even above 10.Because fuel-injected pressure increases and the increase of nozzle hole number, the minimizing of injection diameter, thereby the fogging degree that makes oil of the present invention chew fuel oil when spraying has very big raising.
In addition, can also adopt a kind of oil of so-called sphere structure to chew, the top of the sliding spool that this oil is chewed is spherical in shape, and the in-oil cylinder cavity of the spraying that matches with it is also spherical in shape, and also retains 0.15 mm clearance between the two.In addition, the profile of spray oils cylinder head is also spherical in shape, and oilhole is evenly distributed in the surface of the spraying oil cylinder of sphere-like, so the injection that this spheroid oil is chewed is more even, better effects if.
The beneficial effect that oil of the present invention is chewed is, because its sealing circular cone area of contour increases, thereby the runner of fuel oil increases, flow resistance reduces, thereby reduced to close valve pressure when fuel oil is closed, stopped the secondary injection phenomenon, and increased the result of spray oils cylinder head volume, make the oil cylinder head that more spray orifice can be set again, thereby shortened fuel injection time.Improve the fuel-injected fogging degree, make the burning of diesel engine more abundant, thereby make the power character of motor, Economy, the thermal efficiency and emission performance improve.
Description of drawings:
Accompanying drawing 1 is the longitudinal sectional drawing that oil of the present invention is chewed.
Accompanying drawing 2 is worm's eye views of accompanying drawing 1.
Accompanying drawing 3 is spheroid part part sectioned views that sphere structure oil of the present invention is chewed.
In the accompanying drawing 1, the 1st, sliding spool, the 2nd, oil spout oil cylinder, 3 sealing cones, 4 jet chambers, 5 nozzle openings.Φ 1 is the diameter of sliding spool, and Φ 2 is big end garden diameters of sliding spool end sealing cone, and Φ 3 is diameters of sliding spool top cylinder.
In the accompanying drawing 3, Φ 4 is bottom surface diameters of the sliding spool sealing cone chewed of sphere structure oil, and Φ 5 is sliding spool top sphere diameters that sphere structure oil is chewed.
Embodiment:
In the accompanying drawing 1, sliding spool 1 generally adopts W18Cr4V materials processing, and spraying oil cylinder 2 can adopt 18Cr2Ni4WA materials processing, also can adopt the similar material of other performances.In general, for cylinder diameter D=150 millimeter or bigger diesel engine, the diameter of sliding spool is generally got Φ 1=6 millimeter.It grinds after matching with the endoporus of spraying oil cylinder mutually, and both form one pair of precision pair.The bottom surface diameter of phi 2=4.6 millimeter of sealing cone so both bear the ratio of pressure, just equals the long-pending ratio of its projecting section, also is equivalent to the ratio of diameter square, and available down routine simple formula calculates:
ξ1＝(Φ1*Φ1-Φ2*Φ2)/Φ1*Φ1＝0.412＝0.4
The sealing cone of sliding spool 1 is got 120 ° of degree, and is corresponding therewith, and the cavity of spraying oil cylinder 2, its cone angle are got two sealing cones of 118 ° of degree and must be finish grinded.The column diameter Φ 3=3.6 millimeter at sliding spool 1 sealing cone top, there is the chamfering of 45 ° of degree the end of this cylinder.The diameter of the cylindrical cavity of spraying oil cylinder 2 sealing cone bottoms is 4 millimeters, and the bottom is flat, and it is the interior chamfering of 45 ° of degree that cone angle is arranged, and this is just in time consistent with the shape of sliding spool head, forms the ring-type uniform section passage of 0.2 mm wide between the two.The head configuration of spraying oil cylinder 2 is also tapered and the chamfering of 45 ° of degree arranged equally.The aperture of 12 nozzle openings is that 0.2 millimeter, angle are that the nozzle opening of 30 ° of degree is evenly distributed on outside cone one week of side surrounding of spraying oil cylinder, and links to each other with prismatic passage of above-mentioned ring-type.
Below, an embodiment chewing of the oil of sphere structure of the present invention for example again provides the implementation detail of best effects of the present invention by the description to its head construction.
As shown in Figure 2, the sliding spool material that this spheroid oil is chewed still can adopt W18Cr4V materials processing, and spraying oil cylinder 2 generally can adopt 15CrMoV materials processing.Φ 4 is bottom surface diameters of the sliding spool sealing cone in sphere structure oil is chewed, and Φ 5 is the sphere diameters on the sliding spool top in sphere structure oil is chewed.The bottom surface diameter of phi 4=4.2 millimeter of sealing cone, so its receiving area ratio:
ξ2＝(Φ1*Φ1-Φ4*Φ4)/Φ1*Φ1＝0.51
The sphere diameter Φ 5=5 millimeter of sliding spool 1 sealing cone bottom, spray oils cylinder bottom portion is spherical cavity, its internal diameter is 5.4 millimeters, therefore, forms the spherical jet chamber of uniform 0.2 millimeter thickness between sliding spool 1 and the spraying oil cylinder 2.The profile of spraying oil cylinder 2 heads also is spherical, and its external diameter is 11.4 millimeters.Numerous apertures are the surface that 0.2 millimeter nozzle opening is evenly distributed on spheroid, and are communicated with accumulator.
Effect of the present invention is to have reduced fuel oil runner and sliding spool throwing because this oil is chewed The shadow Area Ratio so that its when fuel injected, flow resistance and pressure oscillation are little, fuel oil sprays Rate improves, and injection duration shortens, and the oil mist particles of ejection is thin, and quality is good, namely uses Do not have the delivery valve of decompression band, can not produce secondary injection yet, make dynamic property, the warp of engine Ji property and discharge performance are improved. In addition, the processability of product structure that this oil is chewed is good, slides Contact stress when plunger is closed is little, so long service life.
Claims (7)
1. an improved diesel internal combustion machine oil is chewed, comprise a sliding spool (1) and spraying oil cylinder (2) composition, the top of sliding spool (1) is a cone, its cone flank face constitutes sealing cone with the conical surface of spraying oil cylinder (2), under the sealing cone jet chamber is arranged, the jet chamber communicates with nozzle opening, it is characterized in that: the diameter ratio of the end diameter of sealing cone and sliding spool (1) is less than 0.6, and the gap between sliding spool (1) and spraying oil cylinder (2) jet chamber is less than 0.2 millimeter.
2. a kind of improved diesel internal combustion machine oil according to claim 1 is chewed, it is characterized in that: the nose shape of described sliding spool (1) and the inner shape of spraying oil cylinder (2) fit like a glove, but keep the 0.15-0.2 mm clearance, this gap constitutes one section prismatic annular pass, and the thickness of width of channel and bottom surface equates.
3. a kind of improved diesel internal combustion machine oil according to claim 2 is chewed, and it is characterized in that: the cylindrical body that an end-beveling is arranged under the sealing cone of described sliding spool (1).
4. a kind of improved diesel internal combustion machine oil according to claim 3 is chewed, and it is characterized in that: the head configuration of oil spout oil cylinder (2) is inverted cone-shaped structure, and more oilhole (5) is distributed in the conical surface and rounds.
5. a kind of improved diesel internal combustion machine oil according to claim 1 is chewed, and it is characterized in that: inner chamber, the outside of sliding spool (1) head and oil spout oil cylinder (2) all are spheroid.
6. a kind of improved diesel internal combustion machine oil according to claim 5 is chewed, and it is characterized in that: on the spherome surface of oil spout oil cylinder (2), be uniform-distribution with oilhole (5).
7. chew according to claim 5 or 6 described a kind of improved diesel internal combustion machine oil, it is characterized in that: the diameter of oilhole (5) is less than or equal to 0.2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021360936A CN1469040A (en) | 2002-07-18 | 2002-07-18 | Improved oil nozzle ofr diesel oil burning internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021360936A CN1469040A (en) | 2002-07-18 | 2002-07-18 | Improved oil nozzle ofr diesel oil burning internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1469040A true CN1469040A (en) | 2004-01-21 |
Family
ID=34146313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021360936A Pending CN1469040A (en) | 2002-07-18 | 2002-07-18 | Improved oil nozzle ofr diesel oil burning internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1469040A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742778A (en) * | 2014-01-09 | 2014-04-23 | 四川宁江山川机械有限责任公司 | Improvement structure of oil nipple of oiling machine |
| CN107795421A (en) * | 2016-09-02 | 2018-03-13 | 罗伯特·博世有限公司 | fuel injector for engine |
| CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail Diesel Engine |
-
2002
- 2002-07-18 CN CNA021360936A patent/CN1469040A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742778A (en) * | 2014-01-09 | 2014-04-23 | 四川宁江山川机械有限责任公司 | Improvement structure of oil nipple of oiling machine |
| CN103742778B (en) * | 2014-01-09 | 2016-08-24 | 四川宁江山川机械有限责任公司 | A kind of improved structure of oiling machine pump nozzle |
| CN107795421A (en) * | 2016-09-02 | 2018-03-13 | 罗伯特·博世有限公司 | fuel injector for engine |
| CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail Diesel Engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5016820A (en) | Fuel injectors for internal combustion engines | |
| US5996912A (en) | Flat needle for pressurized swirl fuel injector | |
| US20030141385A1 (en) | Fuel injector swirl nozzle assembly | |
| JP2669819B2 (en) | Method for injecting liquid fuel into a spark ignition internal combustion engine having a combustion chamber | |
| US6109549A (en) | Fuel injector for internal combustion engines and method for making same | |
| CN1061127C (en) | Needle valve injector | |
| KR20030012931A (en) | Fuel injection system | |
| CN100494668C (en) | Fuel injector and an engine including such an injector | |
| CN100587253C (en) | Fuel injector for internal combustion engine | |
| US7185832B2 (en) | Fuel injection nozzle for an internal combustion engine with direct fuel injection | |
| US4080700A (en) | Method of atomizing a liquid, an atomizer tip for use in the method and method of manufacturing the tip | |
| DE10124748A1 (en) | Fuel injector | |
| JP2001165017A (en) | Fuel injection nozzle | |
| US7047946B2 (en) | Method for operating an internal combustion engine | |
| CN1469040A (en) | Improved oil nozzle ofr diesel oil burning internal combustion engine | |
| US6142392A (en) | Fuel injector for an internal combustion engine | |
| US9662709B2 (en) | Method for producing a fuel injection element having channels, and a fuel injection element | |
| US6676040B2 (en) | Variable swirl type GDI injector | |
| CN101694197A (en) | Split-type needle valve matching part | |
| CN2520424Y (en) | Electric controlled fuel jet | |
| CN2228137Y (en) | Fuel injector | |
| US7520269B2 (en) | Fuel injector nozzle assembly | |
| WO2004090323A1 (en) | Spray pattern element and fuel injection valve with a spray pattern element | |
| SU1557348A1 (en) | Atomizer for fuel nozzle | |
| CN213255176U (en) | Stepped penetration type atomizing nozzle of spray gun |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |