CN104088742A - Step type orifice oil nozzle - Google Patents
Step type orifice oil nozzle Download PDFInfo
- Publication number
- CN104088742A CN104088742A CN201410278949.8A CN201410278949A CN104088742A CN 104088742 A CN104088742 A CN 104088742A CN 201410278949 A CN201410278949 A CN 201410278949A CN 104088742 A CN104088742 A CN 104088742A
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- CN
- China
- Prior art keywords
- oil nozzle
- hole
- oil
- diameter
- step type
- 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
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- Fuel-Injection Apparatus (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The invention relates to a step type orifice oil nozzle. An orifice close to a pressure chamber (2), of the oil nozzle (1) is designed into a fine hole (3); an orifice close to the oil nozzle (1) is designed into a large hole (4); the diameter D1 of the large hole (4) is greater than the diameter D2 of the fine hole (3); the length L1 of the rough hole (4) is smaller than the length L2 of the fine hole (3). By adopting the step type orifice oil nozzle, fuel oil can be combusted sufficiently, and the purposes of energy conservation and emission reduction are achieved.
Description
Technical field
The invention belongs to diesel injector, be specifically related to a kind of cascade spray orifice oil nozzle of rational in infrastructure, atomization quality better.
Background technique
The burning of diesel engine is subject to the control of oil nozzle spray characteristic in very large factor.Diesel oil is by nozzle atomization, to realize under High Pressure with mixing of air, and the quality of fuel-oil atmozation directly affects the formation quality of mixed gas, affects Economy, power character and the emission level of motor.The service behaviour of diesel engine, fuel oil oil consumption and NOx, particulate emission, the temperature, pressure and the motion conditions that depend on to a great extent air in the shape of spraying, the distribution of sizes of elaioleucite and firing chamber, and this is closely related with the characteristics such as diameter, shape, roughness and flow coefficient of the spray orifice of oil nozzle.Therefore, spray orifice rational in infrastructure sprays and the effect of having greatly improved of atomization quality tool fuel oil.
Summary of the invention
The present invention is exactly the problem that causes motor to exist on Economy, power character and emission level due to unreasonable structure when the oil spout in order to solve existing diesel oil nozzle, and a kind of cascade spray orifice oil nozzle is provided.
The technical solution used in the present invention: a kind of cascade spray orifice oil nozzle, oil nozzle 1 spray orifice is designed to pore 3 in the hole near 2 places, pressure chamber, hole near oil nozzle 1 outlet port is designed to gross porosity 4, wherein the diameter D1 of gross porosity 4 is greater than the diameter D2 of pore 3, and the length L 1 of gross porosity 4 is less than the length L 2 of pore 3.
The present invention compared with prior art its beneficial effect is: 1. the present invention is less than gross porosity diameter D1 at the pore diameter D2 near pressure chamber, and nozzle spray cone angle increases like this.Penetration distance reduces, improved the atomization quality of fuel oil, thereby reach the object that energy saving reduces exhaust emission discharge, and the pressure gradient in nozzle pressure chamber and hole will be less and be evenly distributed, the inner air pocket intensity of spray orifice diminishes simultaneously, fuel flow velocity distribution is more even, and flow velocity is improved, and the increase of ladder place flow field turbulence intensity, the initial disturbance of fuel-oil atmozation formed, the diffusion of having improved fuel spray bundle, has improved fuel-oil atmozation quality; 2. in the pore length L 2 near nozzle pressure chamber, be greater than the gross porosity length L 1 near spray orifice outlet, be conducive to increase the penetration distance of mist bundle, simultaneously, be conducive to the central position that air pocket is diffused into spray orifice, can be for jet atomization provides maximum disturbance energy when hole bubble is crumbled and fall in position, jet-core region, thus be conducive to fire oil atomization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a cascade spray orifice oil nozzle, is designed to pore 3 by oil nozzle 1 spray orifice in the hole near 2 places, pressure chamber, and the hole in close oil nozzle 1 outlet port is designed to gross porosity 4, wherein the diameter D1 of gross porosity 4 is greater than the diameter D2 of pore 3, and the length L 1 of gross porosity 4 is less than the length L 2 of pore 3.
Claims (1)
1. a cascade spray orifice oil nozzle, it is characterized in that oil nozzle (1) spray orifice to be designed to pore (3) in the hole of locating near pressure chamber (2), hole near oil nozzle (1) outlet port is designed to gross porosity (4), wherein the diameter D1 of gross porosity (4) is greater than the diameter D2 of pore (3), and the length L 1 of gross porosity (4) is less than the length L 2 of pore (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410278949.8A CN104088742A (en) | 2014-06-22 | 2014-06-22 | Step type orifice oil nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410278949.8A CN104088742A (en) | 2014-06-22 | 2014-06-22 | Step type orifice oil nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104088742A true CN104088742A (en) | 2014-10-08 |
Family
ID=51636487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410278949.8A Pending CN104088742A (en) | 2014-06-22 | 2014-06-22 | Step type orifice oil nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104088742A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929837A (en) * | 2015-05-24 | 2015-09-23 | 北京工业大学 | Oil nozzle for spraying diesel oil in mixed manner of gas state and liquid state |
| CN105332840A (en) * | 2015-10-31 | 2016-02-17 | 北京工业大学 | Method for achieving pre-mixing burning through cavitation jet strengthening |
| CN106968857A (en) * | 2017-04-14 | 2017-07-21 | 无锡职业技术学院 | Petrol engine fuel injector nozzle |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB565299A (en) * | 1943-10-20 | 1944-11-03 | Wyndham Hewitt Ltd | Improvements relating to the nozzles of fuel injectors for internal combustion engines |
| JPS58222971A (en) * | 1982-06-22 | 1983-12-24 | Mitsubishi Heavy Ind Ltd | Fuel injection valve |
| CN2839602Y (en) * | 2005-10-24 | 2006-11-22 | 天津市天动技术中心 | Diesel engine combustion chamber fuel-injection nozzle |
| US20090242668A1 (en) * | 2008-03-31 | 2009-10-01 | Hitachi, Ltd. | Fuel Injection Valve and Method for Forming Orifice Thereof |
| JP2011099406A (en) * | 2009-11-06 | 2011-05-19 | Honda Motor Co Ltd | Method of manufacturing fuel injector, and nozzle sintered body |
| CN102720615A (en) * | 2012-07-07 | 2012-10-10 | 中国船舶重工集团公司第七�三研究所 | Cross jet hole fuel spray nozzle |
-
2014
- 2014-06-22 CN CN201410278949.8A patent/CN104088742A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB565299A (en) * | 1943-10-20 | 1944-11-03 | Wyndham Hewitt Ltd | Improvements relating to the nozzles of fuel injectors for internal combustion engines |
| JPS58222971A (en) * | 1982-06-22 | 1983-12-24 | Mitsubishi Heavy Ind Ltd | Fuel injection valve |
| CN2839602Y (en) * | 2005-10-24 | 2006-11-22 | 天津市天动技术中心 | Diesel engine combustion chamber fuel-injection nozzle |
| US20090242668A1 (en) * | 2008-03-31 | 2009-10-01 | Hitachi, Ltd. | Fuel Injection Valve and Method for Forming Orifice Thereof |
| JP2011099406A (en) * | 2009-11-06 | 2011-05-19 | Honda Motor Co Ltd | Method of manufacturing fuel injector, and nozzle sintered body |
| CN102720615A (en) * | 2012-07-07 | 2012-10-10 | 中国船舶重工集团公司第七�三研究所 | Cross jet hole fuel spray nozzle |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929837A (en) * | 2015-05-24 | 2015-09-23 | 北京工业大学 | Oil nozzle for spraying diesel oil in mixed manner of gas state and liquid state |
| CN104929837B (en) * | 2015-05-24 | 2017-08-11 | 北京工业大学 | A kind of diesel oil injection nozzle of gas-liquid binary states mixing jetting |
| CN105332840A (en) * | 2015-10-31 | 2016-02-17 | 北京工业大学 | Method for achieving pre-mixing burning through cavitation jet strengthening |
| CN106968857A (en) * | 2017-04-14 | 2017-07-21 | 无锡职业技术学院 | Petrol engine fuel injector nozzle |
| CN114353120A (en) * | 2021-12-17 | 2022-04-15 | 中国北方发动机研究所(天津) | Camber surface diversion type combustion chamber suitable for multi-aperture nozzle |
| CN114353120B (en) * | 2021-12-17 | 2023-04-25 | 中国北方发动机研究所(天津) | Undulating surface diversion type combustion chamber suitable for multi-aperture nozzle |
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Legal Events
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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: 20141008 |