CN2839602Y - Diesel engine combustion chamber fuel-injection nozzle - Google Patents
Diesel engine combustion chamber fuel-injection nozzle Download PDFInfo
- Publication number
- CN2839602Y CN2839602Y CN 200520027849 CN200520027849U CN2839602Y CN 2839602 Y CN2839602 Y CN 2839602Y CN 200520027849 CN200520027849 CN 200520027849 CN 200520027849 U CN200520027849 U CN 200520027849U CN 2839602 Y CN2839602 Y CN 2839602Y
- Authority
- CN
- China
- Prior art keywords
- needle
- cone
- valve body
- diesel engine
- valve core
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model provides a chamber fuel-injection nozzle of a diesel engine combustion, which is characterized in that the internal part of a needle valve body is provided with a cylindrical internal chamber, the lower end of which is provided with a pressure chamber with an injection hole and a sealing conical hole; the internal part of the needle valve body is provided with a cylindrical needle valve core, the lower end of which is provided with a sealing conical table of 60 DEG which is matched with the sealing conical hole of the needle valve body; a guide cone table of high-pressure oil of 45 DEG is arranged between the cylindrical surface of the needle valve core and the sealing conical table, and the lower end of the sealing conical table of the needle valve core is also provided with a small cone of 95 DEG. The utility model solves the problems that because of low spraying pressure, increase of discharge temperature of the combustion chamber is caused, and the utility model improves the combustion condition of a high pressure-charging diesel engine. In addition, the utility model also has the advantage of simple structure.
Description
Technical field
The utility model relates to a kind of diesel engine that is used for locomotive, especially a kind of burning chamber of diesel engine oil nozzle.
Background technique
Use pressurized machine at present and improve pressure and the density that burning chamber of diesel engine is inhaled into air, assistant is to improve the important means of diesel engine power and efficient with increase and rationalization's combustion process of fuel injection amount.The oil nozzle structure that existing burning chamber of diesel engine generally uses is to be made of needle-valve body 1 and the needle-valve core 3 that is installed in the needle-valve body, as shown in Figure 1, be the cylindrical inner chamber that has step in the needle-valve body, the lower end is conical sealing surface, and the sealing surface lower end is pressure chamber 6 and spray orifice 7.The needle-valve core is the cylindrical body B that the lower end has step, and needle-valve core lower end is shaped on the circular cone 4 with needle-valve body sealing surface coupling, and the circular cone lower end is shaped on small cone body 5.The oil nozzle of this structure has agitation at the annular space A place of needle-valve body cylindrical inner chamber lower end to fluid 2, influenced jet pressure, make spraying can not reach the bottom of firing chamber, smolder thereby cause, even the situation of excessive discharge temperature appears, promptly the turbine of pressurized machine is preceding 620 ℃, behind the turbine of pressurized machine 550 ℃, outlet pipe and pressurized machine all burn red, and exhaust smoke has reached 4 ripples and permitted value.
Summary of the invention
The utility model provides a kind of jet performance better burning chamber of diesel engine oil nozzle for solving the technical problem that exists in the known technology.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of burning chamber of diesel engine oil nozzle, be shaped on that the cylindrical cavity lower end that has step is shaped on hemisphere and the cylindrical pressure chamber that constitutes and the needle-valve body of the co-axial seal cone shape hole that links to each other, be distributed in four spray orifices that are interlinked to the outside in needle-valve body lower end and the pressure chamber and be installed in that lower end in the needle-valve body is shaped on 60 ° of cone angle circular cone being complementary with needle-valve body sealing cone shape hole and the cylindrical needle spool of tip small cone body is formed by the upper end, also be shaped on the cone angle that links to each other with needle-valve core cylndrical surface on the described needle-valve core circular cone conical surface and be 45 ° circular cone.
The utility model can also adopt following technical measures:
The cone angle of described needle-valve core small cone body is 95 °.
The advantage that the utlity model has with good effect is: replaced being connected of B cylindrical body and 60 ° of circular cone because the needle-valve core is connected with 60 ° of two circular cone with 45 °, it is smooth and easy that liquid is flowed, and reduced the disturbance at the A place; The utility model also changes the cone angle of the small cone body of needle-valve core lower end into 95 ° by 160 °, has further reduced the disturbance of oily stream in the pressure chamber, adds and has suitably reduced pressure chamber's volume, thereby strengthened the penetrating force of oily stream in the firing chamber.Test shows that oil stream spray penetration is brought up to 1m by 600mm in air, has adapted to and has increased the needs of pressing diesel engine.Service testing is measured, 590 ℃ of the front-seat temperature of turbine, and behind the turbine 510 ℃, smoke evacuation is permitted value less than 2 ripples, has improved the burning condition shape of highly supercharged diesel engine greatly, and the utility model also has advantage simple in structure, that be easy to realize in addition.
Description of drawings
Fig. 1 is the structural representation of known 6130 burning chamber of diesel engine oil nozzles;
Fig. 2 is a structural representation of the present utility model.
Among the figure: 1, needle-valve body; 2, high pressure oil; 3, needle-valve core; 4, O-ring frustum; 5, small cone body; 6, pressure chamber; 7, spray orifice; 8, needle-valve core; 9, guiding circular cone; 10, small cone body; 11, sealing cone shape hole; 12, O-ring frustum.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 2 and be the oil nozzle structure after improving, in the needle-valve body 1 is cylindrical cavity, the cylindrical cavity lower end is shaped on pressure chamber 6 and sealing cone shape hole 11 thereof, be shaped on the spray orifice 7 of outside inject high pressure oil in the pressure chamber, cylindrical needle spool 8 is installed in needle-valve body, and the lower end of needle-valve core is shaped on 60 ° of O-ring frustums 12 that are complementary with needle-valve body sealing cone shape hole.In order to reduce the disturbance of high pressure oil, on the O-ring frustum, be shaped on the guiding circular cone 9 of the high pressure oil 2 that is connected with needle-valve core cylndrical surface in needle-valve body cylindrical cavity lower end.Being shaped on cone angle in O-ring frustum lower end is 95 ° small cone body 10, thereby has reduced the disturbance of high pressure oil in needle-valve body cylindrical cavity and pressure chamber, makes oil stream more smooth and easy.
Claims (2)
1. burning chamber of diesel engine oil nozzle, be shaped on by the upper end that the cylindrical cavity lower end that has step is shaped on hemisphere and the cylindrical pressure chamber that constitutes and the needle-valve body of the co-axial seal cone shape hole that links to each other, be distributed in four spray orifices that are interlinked to the outside in needle-valve body lower end and the pressure chamber, and be installed in that lower end in the needle-valve body is shaped on 60 ° of cone angle circular cone being complementary with needle-valve body sealing cone shape hole and the cylindrical needle spool of tip small cone body is formed, it is characterized in that: the circular cone that also is shaped on the cone angle that links to each other with needle-valve core cylndrical surface on the described needle-valve core circular cone conical surface and is 45 °.
2. burning chamber of diesel engine oil nozzle according to claim 1 is characterized in that: the cone angle of described needle-valve core small cone body is 95 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520027849 CN2839602Y (en) | 2005-10-24 | 2005-10-24 | Diesel engine combustion chamber fuel-injection nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520027849 CN2839602Y (en) | 2005-10-24 | 2005-10-24 | Diesel engine combustion chamber fuel-injection nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839602Y true CN2839602Y (en) | 2006-11-22 |
Family
ID=37427586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520027849 Expired - Fee Related CN2839602Y (en) | 2005-10-24 | 2005-10-24 | Diesel engine combustion chamber fuel-injection nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839602Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103261665A (en) * | 2010-12-17 | 2013-08-21 | 罗伯特·博世有限公司 | Fuel injection valve for internal combustion engines |
| CN104088742A (en) * | 2014-06-22 | 2014-10-08 | 中国北方发动机研究所(天津) | Step type orifice oil nozzle |
| CN104976006A (en) * | 2014-04-07 | 2015-10-14 | 株式会社电装 | Fuel injector |
| CN105492757A (en) * | 2013-08-30 | 2016-04-13 | 罗伯特·博世有限公司 | Fuel injector |
-
2005
- 2005-10-24 CN CN 200520027849 patent/CN2839602Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103261665A (en) * | 2010-12-17 | 2013-08-21 | 罗伯特·博世有限公司 | Fuel injection valve for internal combustion engines |
| CN105492757A (en) * | 2013-08-30 | 2016-04-13 | 罗伯特·博世有限公司 | Fuel injector |
| CN105492757B (en) * | 2013-08-30 | 2018-10-23 | 罗伯特·博世有限公司 | Fuel injector |
| CN104976006A (en) * | 2014-04-07 | 2015-10-14 | 株式会社电装 | Fuel injector |
| CN104088742A (en) * | 2014-06-22 | 2014-10-08 | 中国北方发动机研究所(天津) | Step type orifice oil nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103134079B (en) | Double-oil-circuit fuel nozzle | |
| CN112460636B (en) | Double-oil-way single-nozzle double-fuel nozzle | |
| CN2839602Y (en) | Diesel engine combustion chamber fuel-injection nozzle | |
| CN109826738B (en) | Dual-fuel injector | |
| CN102182600A (en) | Combustion engine oil spray nozzle with disturbance area | |
| CN110118138A (en) | A kind of gaseous-fuel injector | |
| CN113047955B (en) | Ignition type supercharged two-stroke direct-injection multi-combustion engine | |
| CN1323239C (en) | Fuel injection nozzle | |
| CN109058013A (en) | A kind of natural gas diesel injector of new control model | |
| CN104662283B (en) | The fuel injection system of internal combustion engine | |
| CN205089513U (en) | Common rail fuel injection nozzle idol piece of little sealed diameter | |
| CN209925136U (en) | Novel direct injection injector in dual-fuel cylinder | |
| CN211975212U (en) | Water-blended injection system of mixed fuel engine | |
| CN103306871B (en) | A kind of Hydraulically-assistquick quick on-off electrical control oil injector for diesel engine and method thereof | |
| CN2825992Y (en) | Umbrella spray type micro-displacement oil spray nozzle | |
| CN209293945U (en) | A kind of natural gas diesel injector of new control model | |
| CN205014353U (en) | Dual medium of middle and high voltage fires oil atomizer | |
| CN219452276U (en) | Novel automobile fuel injector valve seat | |
| CN202756147U (en) | Double-seat-surface multiple-time atomizing nozzle | |
| CN211116364U (en) | Fuel spray nozzle matching part with multi-focus spray holes | |
| CN2818826Y (en) | Combined umbrella-jetting porous micro-displacement fuel injector | |
| CN111287867B (en) | Water mixing injection system of mixed fuel engine and control method thereof | |
| CN201884176U (en) | Fuel-injection nozzle matching part | |
| CN102734026A (en) | Double-seat multiple-atomizing nozzle | |
| CN202811156U (en) | Diesel injector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |