CN104564468A - Diesel nozzle matching part - Google Patents
Diesel nozzle matching part Download PDFInfo
- Publication number
- CN104564468A CN104564468A CN201410766210.1A CN201410766210A CN104564468A CN 104564468 A CN104564468 A CN 104564468A CN 201410766210 A CN201410766210 A CN 201410766210A CN 104564468 A CN104564468 A CN 104564468A
- Authority
- CN
- China
- Prior art keywords
- spray orifice
- row
- nozzle
- valve body
- plane
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The invention provides a diesel nozzle matching part. The diesel nozzle matching part comprises a needle valve body and a needle valve which is arranged in the needle valve body, wherein a first row of spray holes and a second row of spray holes are formed in two adjacent circumferences at a nozzle at the front end of the needle valve body respectively; the nozzle axes of the first row of spray holes and the second row of spray holes form an included angle of 75 degrees with the axis of the needle valve body, and are uniformly distributed with the axis of the needle valve body as the center; the first row of spray holes are arranged on a parallel plane at the position which is 1 mm away from the plane where the central axis of the nozzle is perpendicular to the horizontal plane; the second row of spray holes are arranged on a parallel plane at the position which is 1 mm away from the plane where the central axis of the nozzle forms an included angle of 45 degrees with the horizontal plane. The diesel nozzle matching part has the advantages and positive effects that a speed component tangential to the circumference can be produced by a spray close to the nozzle in a diesel cylinder, namely at an oil-rich lean gas region, by designing the angles and the positions of the spray holes; the oil and gas can be fully mixed, the mixing degree of the fuel gas and air is improved, and a combustion process is optimized.
Description
Technical field
The invention belongs to diesel injector technical field, especially relate to a kind of diesel nozzeles couple strengthening air-fuel mixture degree.
Background technique
In prior art, in world wide, high-power diesel engine power per liter density continues to promote, and rated engine speed increases substantially.Raising power performance and reduction fuel consume are proposed and explicitly calls for.When power index is continually strengthened, to the increase in demand of air input of engine by air, need to increase Flow coefficient of inlet by reducing cylinder cap intake duct swirl rate.But lower swirl rate is disadvantageous to air-fuel mixture in cylinder.Therefore, need to close by design the uniformity coefficient that test coupling means optimize air-fuel mixture in cylinder.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of diesel nozzeles couple, increase air inlet and the relative mixing velocity of injected fuel, improve air-fuel mixture degree, improve in-cylinder combustion process.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of diesel nozzeles couple, comprises the needle-valve of needle-valve body and Qi Nei installation, two adjacent circumferential at nozzle place, described needle-valve body front end arranges first row spray orifice and second row spray orifice respectively; The spray orifice axis of described first row spray orifice and second row spray orifice is all 75 ° with the axis angle of needle-valve body, and is uniformly distributed centered by needle-valve body axis.
Further, described first row spray orifice is arranged on apart from the parallel plane crossing the nozzle centre axis plane 1mm position vertical with horizontal plane, and described second row spray orifice is arranged on apart from the parallel plane crossing nozzle centre axis and horizontal plane angle plane 1mm at 45 ° position.
Further, described first row spray orifice and second row spray orifice include the spray orifice of 4 Φ 0.4mm.
Further, the head of described needle-valve comprise from top to bottom connect successively first conical surface, vertical plane, second conical surface and bottom plane.
The advantage that the present invention has and good effect are:
By designing the angle of spray orifice and position, can to make near cylinder of diesel engine inner nozzle, i.e. the region of rich oil lean gas, oil bundle produces the tangential velocity component of circumference; Oil gas is fully mixed, improves the mixability of fuel oil-gas and air, Optimizing Combustion process;
By carrying out special construction design to needle-valve head, reduce because spray orifice is biased the decline problem that nozzle couple head increases, pressure chamber's volume increases the nozzle couple jet quality such as oil dripping, jet pressure reduction brought caused.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the jet orifice structure schematic diagram of needle-valve body of the present invention;
Fig. 3 is the head construction schematic diagram of needle-valve of the present invention.
In figure:
1-needle-valve body, 2-needle-valve, 3-first conical surface, 4-vertical plane, 5-second conical surface, 6-bottom plane.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Elaborate below in conjunction with accompanying drawing 1 to 3 pair of specific embodiments of the invention.
A kind of diesel nozzeles couple, comprises the needle-valve 2 of needle-valve body 1 and Qi Nei installation, two adjacent circumferential at nozzle place, described needle-valve body 1 front end arranges first row spray orifice and second row spray orifice respectively;
Described first row spray orifice is arranged on apart from the parallel plane crossing the nozzle centre axis plane 1mm position vertical with horizontal plane, as shown in Fig. 2 midship section A-A, in the present embodiment namely at needle-valve body 1 top to head (spray orifice layout place) 41.3mm place, arrange the spray orifice of 4 Φ 0.4mm, spray orifice is uniformly distributed centered by needle-valve body 1 axis, spray orifice axis and needle-valve body 1 axis angle 75 °;
Described second row spray orifice is arranged on apart from the parallel plane crossing nozzle centre axis and horizontal plane angle plane 1mm at 45 ° position; As shown in Fig. 2 midship section B-B, in the present embodiment namely at needle-valve body 1 top to head (spray orifice layout place) 41.56mm place, arrange the spray orifice of 4 Φ 0.4mm, spray orifice axis and needle-valve body axis angle 75 °, spray orifice is uniformly distributed centered by needle-valve body 1 axis.
By the appropriate design of two row's spray orifices, by the circumferential uniform for 8 spray orifices, effectively avoid oily beam interferometer problem simultaneously.
For reducing nozzle couple pressure chamber cavity volume, special construction design is carried out to needle-valve 2 head, as shown in Figure 3, the head of needle-valve 2 of the present invention comprise from top to bottom connect successively first conical surface 3, vertical plane 4, second conical surface 5 and bottom plane 6, reduce because spray orifice is biased the decline problem that nozzle couple head increases, pressure chamber's volume increases the nozzle couple jet quality such as oil dripping, jet pressure reduction brought caused as far as possible.
The present invention is by the spray orifice direction of appropriate design nozzle, and the appropriate vector realizing the fuel oil ejected has circumferentially tangential component, ensures that the direction of the tangential component of speed is identical with the tangential velocity direction of airspeed in cylinder simultaneously.Also make the rotating energy of the oil bundle sprayed from spray orifice increase, realize the relative velocity increasing air-flow and air mixing, increase relative eddy ratio, strengthen the degree of air-fuel mixture, meet the designing requirement of cylinder cap performance.Appropriate design is carried out to needle-valve 2 and reduces couple pressure chamber volume as far as possible, avoid the amount of pressure chamber's residual fuel oil as far as possible, ensure the quality that couple is sprayed.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (4)
1. a diesel nozzeles couple, the needle-valve (2) comprising needle-valve body (1) and install in it, it is characterized in that: two adjacent circumferential at nozzle place, described needle-valve body (1) front end arrange first row spray orifice and second row spray orifice respectively, the spray orifice axis of described first row spray orifice and second row spray orifice is all 75 ° with the axis angle of needle-valve body (1), and is uniformly distributed centered by needle-valve body (1) axis.
2. diesel nozzeles couple according to claim 1, it is characterized in that: described first row spray orifice is arranged on apart from the parallel plane crossing the nozzle centre axis plane 1mm position vertical with horizontal plane, and described second row spray orifice is arranged on apart from the parallel plane crossing nozzle centre axis and horizontal plane angle plane 1mm at 45 ° position.
3. diesel nozzeles couple according to claim 1, is characterized in that: described first row spray orifice and second row spray orifice include the spray orifice of 4 Φ 0.4mm.
4. diesel nozzeles couple according to claim 1, is characterized in that: the head of described needle-valve (2) comprise from top to bottom connect successively first conical surface, vertical plane, second conical surface and bottom plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410766210.1A CN104564468A (en) | 2014-12-11 | 2014-12-11 | Diesel nozzle matching part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410766210.1A CN104564468A (en) | 2014-12-11 | 2014-12-11 | Diesel nozzle matching part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564468A true CN104564468A (en) | 2015-04-29 |
Family
ID=53081349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410766210.1A Pending CN104564468A (en) | 2014-12-11 | 2014-12-11 | Diesel nozzle matching part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564468A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545559A (en) * | 2015-12-14 | 2016-05-04 | 中国北方发动机研究所(天津) | Diesel engine combustion system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113543A (en) * | 1994-05-27 | 1995-12-20 | 三菱重工业株式会社 | Cylinder cover for diesel engine |
| CN1651755A (en) * | 2005-02-07 | 2005-08-10 | 大连理工大学 | Fuel injection nozzle |
| CN103615344A (en) * | 2013-11-29 | 2014-03-05 | 哈尔滨工程大学 | Diesel injector capable of successively injecting oil |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
| CN103982350A (en) * | 2014-04-22 | 2014-08-13 | 江苏大学 | Needle valve component for fuel injection device |
-
2014
- 2014-12-11 CN CN201410766210.1A patent/CN104564468A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113543A (en) * | 1994-05-27 | 1995-12-20 | 三菱重工业株式会社 | Cylinder cover for diesel engine |
| CN1651755A (en) * | 2005-02-07 | 2005-08-10 | 大连理工大学 | Fuel injection nozzle |
| CN103615344A (en) * | 2013-11-29 | 2014-03-05 | 哈尔滨工程大学 | Diesel injector capable of successively injecting oil |
| CN103982350A (en) * | 2014-04-22 | 2014-08-13 | 江苏大学 | Needle valve component for fuel injection device |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545559A (en) * | 2015-12-14 | 2016-05-04 | 中国北方发动机研究所(天津) | Diesel engine combustion system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5762535B2 (en) | Self-igniting internal combustion engine | |
| CN202350096U (en) | Double-oil circuit fuel nozzle | |
| CN103134079B (en) | Double-oil-circuit fuel nozzle | |
| US10240569B2 (en) | Internal combustion engine with injection of two fuel jets at different flow rates and fuel-injection method for such an engine | |
| JP2017512273A (en) | Diesel engine collision / split combustion chamber | |
| CN103696847A (en) | In-cylinder direct injection engine combustion chamber | |
| CN102182600A (en) | Combustion engine oil spray nozzle with disturbance area | |
| CN201916044U (en) | Structure for improving air-inflowing rolling effect of petrol engine | |
| CN109996942A (en) | Piston top | |
| CN204082363U (en) | A kind of diesel engine piston combustion chamber | |
| CN108412603B (en) | Piston combustion chamber structure | |
| CN102235283A (en) | Fuel nozzle | |
| CN104564468A (en) | Diesel nozzle matching part | |
| CN103696868A (en) | Internal combustion engine cylinder cover with high eddy ratio or high tumble ratio | |
| CN204921139U (en) | Directly spout formula diesel engine burner | |
| CN205001085U (en) | Gaseous dual -fuel engine air intake manifold gas jet device | |
| CN206694114U (en) | A kind of open combustion chamber of diesel for strengthening combustion mixture generation | |
| CN203488285U (en) | Air inlet pipe and engine with air inlet pipe | |
| CN204900135U (en) | Engine gaseous fuel direct injection injection nozzle | |
| CN101285575A (en) | Multi-jet flow gas combustion burner ejection structure | |
| CN203035421U (en) | Conical spray injector nozzle matching parts | |
| CN203285600U (en) | Oil nozzle of inverted conical orifice | |
| CN102251845B (en) | Combustion system of vortex-type diesel engine | |
| CN201705488U (en) | Cylinder head | |
| CN105484919B (en) | A kind of micro-disturbance extends out the atomizer of type spray orifice |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |
|
| RJ01 | Rejection of invention patent application after publication |