CN102720611A - Fuel injection nozzle with multi-angle spiral spray orifices - Google Patents
Fuel injection nozzle with multi-angle spiral spray orifices Download PDFInfo
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- CN102720611A CN102720611A CN2012102332905A CN201210233290A CN102720611A CN 102720611 A CN102720611 A CN 102720611A CN 2012102332905 A CN2012102332905 A CN 2012102332905A CN 201210233290 A CN201210233290 A CN 201210233290A CN 102720611 A CN102720611 A CN 102720611A
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- spray orifice
- spray orifices
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- fuel
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Abstract
The invention discloses an fuel injection nozzle with multi-angle spiral spray orifices, which comprises a needle valve and a needle valve body, and is characterized in that at least three main spray orifices are uniformly arrayed around the axis in the needle valve body; more than three auxiliary spray orifices corresponding to each main spray orifices are arranged on the needle valve body; the auxiliary spray orifices are communicated with the corresponding main spray orifice and branch at same position in the corresponding main spray orifice; the auxiliary spray orifices are arranged in an upward spiral manner at an outlet on the external surface of the needle valve body by taking the axis of the needle valve body as the axis; the auxiliary spray orifices on each main spray orifice are distributed in a diffused manner by taking the branch position in the main spray orifice as the center; an included angle is formed between axes of adjacent auxiliary spray orifices; the cross section area of each main spray orifices are less than the sum of the cross section areas of the corresponding auxiliary spray orifices; due to the change of the movement direction, the fuel generates stronger vortexes at the branch point of the auxiliary spray orifices and then is sprayed out from the auxiliary spray orifices, so that the atomization intensity of the fuel is enhanced; and as the auxiliary spray orifices spray fuel mist in different directions, the fuel spray space is enlarged, the atomization intensity is higher, the fuel and gas mixture is more uniform, the combustion is more sufficient, the energy-saving and emission reduction are facilitated, and the economic and social benefits are remarkable.
Description
Technical field
The present invention relates to a kind of in-cylinder direct injection fuel injection device for I. C. Engine, particularly a kind of multi-angle spiral spray orifice oil nozzle is used to realize multi-angle fuel injection behind the eddy current.
Background technique
Along with progress of science and technology; The birth of internal-combustion engine has driven the flourish of society; Present internal-combustion engine recoverable amount enormous amount but also in swift and violent increase; When offering convenience to the mankind, also aggravated environmental pollution and energy shortage, the discharging and the raising fuel utilization ratio that therefore reduce internal-combustion engine seem particularly important.The fogging degree of fuel of internal combustion engine has bigger influence to the Economy of motor with discharging; The method that improves atomizing intensity mainly contains and improves jet pressure and organize two kinds of methods of fuel oil eddy current; The high-pressure common rail technology of diesel engine can make jet pressure to 2000bar at present; But the raising once more of fuel pressure receives the restriction of material and machining accuracy, and organizing the fuel oil eddy current is a kind of method with broad prospects for development, and this organizes the fuel oil eddy-current technique still to be in the stage early stage of development at present; Await technological innovation, improve the energy-saving and emission-reduction of atomizing intensity.
Summary of the invention
The present invention the invention provides a kind of multi-angle spiral spray orifice oil nozzle in order to improve the atomizing intensity of injected fuel, through the sub-spray orifice of out of phase is set, can realize that multi-angle is sprayed behind the fuel oil eddy current.
The technological scheme that the present invention adopts is: a kind of multi-angle spiral spray orifice oil nozzle; Comprise needle-valve and needle-valve body, it is characterized in that along its axis one all uniform array at least three main jet holes being arranged in the needle-valve body, corresponding each main jet hole is being provided with sub-spray orifice more than three on the needle-valve body; Sub-spray orifice and main jet hole UNICOM; And same position bifurcated in the main jet hole, sub-spray orifice are that a spiral rises and arranges in the exit position of needle-valve body outer surface with the needle-valve body axis, and the sub-spray orifice on each main jet hole is that the center is divergent shape and arranges with bifurcation site in the main jet hole; Between adjacent sub-spray orifice axis one angle is arranged, main jet hole cross-section area is less than sub-spout cross-section area sum.
Said angle is 5 to 30 degree.
Sub-spray orifice bifurcation site is provided with the vortex space in the said main jet hole, and cross section, vortex space is greater than sub-spray orifice cross section sum, a side and main jet hole UNICOM, opposite side and sub-spray orifice UNICOM.
The present invention is provided with the plurality of sub spray orifice at the main jet bore end, and fuel oil because the change of moving direction is sprayed by sub-spray orifice after producing strong eddy current, strengthens fuel-oil atmozation intensity at sub-spray orifice crotch, arranges owing to there is an angle to be divergent shape between sub-spray orifice axis; The exit position spiral rises and arranges, and sub-spray orifice sprays mist of oil to different direction, has increased the fuel-injected space; Help oil gas and mix, this is simple in structure, and is easy to implement; Atomizing intensity is higher, and oil gas mixes more even, and it is more abundant to burn; Help energy-saving and emission-reduction, economic benefit and social benefit are obvious, and the market space is huge to be suitable for large scale application.
Description of drawings
Fig. 1 is an embodiment of the invention cross-sectional view;
Fig. 2 is that the sub-spray orifice of the embodiment of the invention is arranged schematic representation at the needle-valve body outer surface.
Label title among the figure: 1 needle-valve; 2 needle-valve bodies; 3 main jet holes; 4 sub-spray orifices.
Embodiment
The embodiment of the invention such as Fig. 1, shown in Figure 2, this multi-angle spiral spray orifice oil nozzle comprises needle-valve 1 and needle-valve body 2; Needle-valve 1 is formed a secondary precision pair with needle-valve body 2; Along its axis one all uniform array three main jet holes 3 are arranged in the needle-valve body 2, corresponding each main jet hole 3 is provided with four sub-spray orifices 4 on needle-valve body, sub-spray orifice 4 and main jet hole 3 UNICOMs; And same position bifurcated in main jet hole 3; Sub-spray orifice 4 is that a spiral rises and arranges in the exit position of needle-valve body 2 outer surfaces with needle-valve body 2 axis, and the sub-spray orifice 4 on each main jet hole 3 is that the center is divergent shape and arranges with bifurcation site in the main jet hole 3, between adjacent sub-spray orifice 4 axis one angle is arranged; Main jet hole 3 cross-section areas are less than sub-spout cross-section area sum, and fuel oil flow velocity in main jet hole 3 is higher than flow velocity in the sub-spout 4; During work, by sub-spout 4 ejections, fuel oil changes at crotch change direction flow velocity and produces stronger eddy current high pressure fuel after main jet hole 3 arrives sub-spray orifice 4 bifurcation site at a high speed, and the fuel-oil atmozation intensity after the ejection is bigger; Arrange owing to there is an angle to be divergent shape between sub-spray orifice axis, the exit position spiral rises and arranges, and sub-spray orifice sprays mist of oil to different direction, has increased the fuel-injected space; Help oil gas and mix, this is simple in structure, and is easy to implement; Atomizing intensity is higher, and oil gas mixes more even, and it is more abundant to burn; Help energy-saving and emission-reduction, economic benefit and social benefit are obvious, and the market space is huge to be suitable for large scale application.
Can also in the main jet hole, the vortex space be set sub-spray orifice bifurcation site when the present invention implements, cross section, vortex space is greater than sub-spray orifice cross section sum, a side and main jet hole UNICOM, and opposite side and sub-spray orifice UNICOM are used to add maelstrom and atomizing intensity.
Claims (3)
1. multi-angle spiral spray orifice oil nozzle; Comprise needle-valve (1) and needle-valve body (2); It is characterized in that along its axis one all uniform array at least three main jet holes (3) being arranged in the needle-valve body (2); Corresponding each main jet hole (3) is being provided with sub-spray orifice (4) more than three on the needle-valve body, sub-spray orifice (4) and main jet hole (3) UNICOM, and in main jet hole (3) the same position bifurcated; Sub-spray orifice (4) serves as that the rising of axle spiral is arranged in the exit position of needle-valve body (2) outer surface with needle-valve body (2) axis; Sub-spray orifice (4) on each main jet hole (3) is that the center is divergent shape and arranges with the interior bifurcation site in main jet hole (3), between adjacent sub-spray orifice (4) axis one angle is arranged, and main jet hole (3) cross-section area is less than sub-spout cross-section area sum.
2. multi-angle spiral spray orifice oil nozzle according to claim 1 is characterized in that said angle is 5 to 30 degree.
3. multi-angle spiral spray orifice oil nozzle according to claim 1 and 2; It is characterized in that sub-spray orifice (4) bifurcation site is provided with the vortex space in the said main jet hole (3); Cross section, vortex space is greater than sub-spray orifice (4) cross section sum; One side and main jet hole (3) UNICOM, opposite side and sub-spray orifice (4) UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102332905A CN102720611A (en) | 2012-07-06 | 2012-07-06 | Fuel injection nozzle with multi-angle spiral spray orifices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102332905A CN102720611A (en) | 2012-07-06 | 2012-07-06 | Fuel injection nozzle with multi-angle spiral spray orifices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102720611A true CN102720611A (en) | 2012-10-10 |
Family
ID=46946451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102332905A Pending CN102720611A (en) | 2012-07-06 | 2012-07-06 | Fuel injection nozzle with multi-angle spiral spray orifices |
Country Status (1)
| Country | Link |
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| CN (1) | CN102720611A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499862A (en) * | 1982-11-23 | 1985-02-19 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. | Injection device for direct injection diesel engines using alcohol and diesel fuel |
| CN1380942A (en) * | 2000-05-26 | 2002-11-20 | 罗伯特·博施有限公司 | Fuel injection system |
| FR2895465A3 (en) * | 2005-12-22 | 2007-06-29 | Renault Sas | Fuel injector for e.g. common rail type direct injection diesel engine, has hollow nozzle with injection holes, where one hole includes main and secondary passages, whose structure permits to form zone at level of intersection of passages |
| FR2860557B1 (en) * | 2003-10-06 | 2007-09-21 | Renault Sa | INTERNAL COMBUSTION ENGINE FUEL INJECTOR FOR A VEHICLE COMPRISING A NOZZLE HAVING AT LEAST ONE ORIFICE |
| WO2008004019A1 (en) * | 2006-07-04 | 2008-01-10 | Renault Trucks | A nozzle assembly, a fuel injector and an internal combustion engine comprising such an injector |
| JP2011220132A (en) * | 2010-04-05 | 2011-11-04 | Toyota Motor Corp | Fuel injection valve |
| CN202611966U (en) * | 2012-07-06 | 2012-12-19 | 中国船舶重工集团公司第七�三研究所 | Multi-angle spiral orifice oil nozzle |
-
2012
- 2012-07-06 CN CN2012102332905A patent/CN102720611A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499862A (en) * | 1982-11-23 | 1985-02-19 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. | Injection device for direct injection diesel engines using alcohol and diesel fuel |
| CN1380942A (en) * | 2000-05-26 | 2002-11-20 | 罗伯特·博施有限公司 | Fuel injection system |
| FR2860557B1 (en) * | 2003-10-06 | 2007-09-21 | Renault Sa | INTERNAL COMBUSTION ENGINE FUEL INJECTOR FOR A VEHICLE COMPRISING A NOZZLE HAVING AT LEAST ONE ORIFICE |
| FR2895465A3 (en) * | 2005-12-22 | 2007-06-29 | Renault Sas | Fuel injector for e.g. common rail type direct injection diesel engine, has hollow nozzle with injection holes, where one hole includes main and secondary passages, whose structure permits to form zone at level of intersection of passages |
| WO2008004019A1 (en) * | 2006-07-04 | 2008-01-10 | Renault Trucks | A nozzle assembly, a fuel injector and an internal combustion engine comprising such an injector |
| JP2011220132A (en) * | 2010-04-05 | 2011-11-04 | Toyota Motor Corp | Fuel injection valve |
| CN202611966U (en) * | 2012-07-06 | 2012-12-19 | 中国船舶重工集团公司第七�三研究所 | Multi-angle spiral orifice oil nozzle |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |