CN2228137Y - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- CN2228137Y CN2228137Y CN 95210871 CN95210871U CN2228137Y CN 2228137 Y CN2228137 Y CN 2228137Y CN 95210871 CN95210871 CN 95210871 CN 95210871 U CN95210871 U CN 95210871U CN 2228137 Y CN2228137 Y CN 2228137Y
- Authority
- CN
- China
- Prior art keywords
- needle
- conical surface
- valve
- fuel
- groove
- 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
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a fuel injector having the performance of umbrella form injection and multihole. The fuel injection conical surface (6) of a needle valve head (3) is provided with a groove (5), or the conical surface is of a waviness shape. The fuel can be injected in a cone shape or an umbrella shape along the conical surface, and can also be injected in a bundle head shape from the groove or from the inner of a wave trough. Thus, the utility model can not only cause the fuel spray to be uniform, but also has enough penetration degree, and the fuel can have more reasonable space distribution in a combustion chamber.
Description
The utility model relates to a kind of oil sprayer, and especially umbrella-injection injector is further improving of Chinese patent CN95200039.3 patent.
By the CN95200039.3 patent disclosure of the utility model patentee application a kind of umbrella-injection injector with secondary spray orifice.Thereby this kind oil sprayer has been set up the penetration degree that hole or groove have increased the spraying of umbrella-injection injector on the needle-valve body of umbrella-injection injector, improved the distribution of fuel oil in the firing chamber.But, because mostly fuel oil is along the face of needle seating ejection when spraying, rather than eject along needle-valve body, it is also very limited to the influence of spraying overall performance therefore to set up hole or groove on needle-valve body, to improving the distributed degrees of fuel oil in the firing chamber remarkable not enough.
Therefore, the purpose of this real effect type is to provide a kind of oil sprayer that can make fuel oil have more rational space distribution in the firing chamber.
The oil sprayer of the utility model comprises a needle-valve and needle-valve body, described needle-valve is loaded in the needle-valve body and with needle-valve body and constitutes precision pair, described needle-valve has a head, this head has one makes the conical surface of the tapered ejection of fuel oil and the outer peripheral surface that links to each other with this conical surface, described needle-valve body is provided with one and unites the main jet hole of working with the needle-valve head, it is characterized in that at least one groove that the described conical surface is provided with and outer peripheral surface intersects.
The conical surface that is characterised in that of the oil spout of the another kind of form of the utility model is corrugated.
The oil sprayer of the utility model since on face of needle seating, be provided with groove or since the conical surface be corrugated, this groove or corrugated trough just are similar to the spray orifice of multiple orifice nozzle, again because fuel oil sprays into the firing chamber along the conical surface mostly, therefore most fuel oils spray in the firing chamber by the overall characteristic of porous and two kinds of oil sprayers of umbrella spray, the advantage that possesses two kinds of oil sprayers, so fuel oil can more reasonably be uniformly distributed in the firing chamber.
Fig. 1 is one of the utility model embodiment's a schematic representation;
Fig. 2 is another embodiment's of the utility model a schematic representation.
As shown in Figure 1, the oil sprayer of the utility model comprises a needle-valve (1) and a needle-valve body (2), and needle-valve body (2) is provided with a main jet hole (4).Needle-valve (1) has a needle-valve head (3).Needle-valve head (3) inserts from main jet hole (4), thereby make needle-valve (1) unite to work with main jet hole (4) with needle-valve body (2) a pair of precision pair of formation and needle-valve head (3) fuel oil is sprayed along this needle-valve (3) from main jet hole (4).This needle-valve head (3) has a conical surface towards the main jet hole (6), fuel oil is tapered or umbrella shape ejection along this conical surface (6), this conical surface (6) has an outer peripheral surface that is attached thereto (8), and described outer peripheral surface (8) constitutes cylindrical contour (7) with the intersection of the conical surface (6).The direction that this conical surface (6) makes progress in towards the axis of needle-valve (1) towards Fig. 1 is shunk.Shrinkage direction along the conical surface in this conical surface (6) is provided with at least one groove (5) that intersects with conical surface outer peripheral surface (8).Described groove (5) can be to connect the whole conical surface also to be provided with in the local conical surface of outer circumferential surface (8) one ends.Many of this grooves (5) as even number bar or odd number bar, also can along the circumferential direction be symmetrical arranged or asymmetric setting.
Fig. 2 is another embodiment's of the utility model a schematic representation, and other structure and Fig. 1 are identical, and different the is conical surface (6) is for corrugated, and the groove (5) of trough (5) in Fig. 1.The quantity of described trough is provided with as required, can be even number and also can be odd number.
Below in conjunction with the embodiments the utility model has been done detailed description, but the utility model is not limited in the foregoing description, any improvement that those skilled in the art are done in the utility model claims scope all is conspicuous with distortion.
Claims (6)
1, a kind of oil sprayer, comprise a needle-valve and needle-valve body, described needle-valve is loaded in the needle-valve body and with needle-valve body and constitutes precision pair, described needle-valve has a head, this head has one makes the conical surface of the tapered ejection of fuel oil and the outer peripheral surface that links to each other with this conical surface, described needle-valve body is provided with one and unites the main jet hole of working with the needle-valve head, it is characterized in that the described conical surface is provided with at least one the groove that intersects with outer peripheral surface.
2, oil sprayer according to claim 1 is characterized in that described groove is the even number bar.
3, oil sprayer according to claim 1 is characterized in that described groove is the odd number bar.
4, oil sprayer according to claim 1 is characterized in that the described conical surface is corrugated.
5, as oil sprayer as described in the claim 4, the trough that it is characterized in that described ripple is an even number.
6, as oil sprayer as described in the claim 4, the trough that it is characterized in that described ripple is an odd number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95210871 CN2228137Y (en) | 1995-05-18 | 1995-05-18 | Fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95210871 CN2228137Y (en) | 1995-05-18 | 1995-05-18 | Fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2228137Y true CN2228137Y (en) | 1996-05-29 |
Family
ID=33861475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95210871 Expired - Fee Related CN2228137Y (en) | 1995-05-18 | 1995-05-18 | Fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2228137Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015024139A1 (en) * | 2013-08-19 | 2015-02-26 | Wang Kangmei | Centrifugal conical-spray fuel spray nozzle |
-
1995
- 1995-05-18 CN CN 95210871 patent/CN2228137Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015024139A1 (en) * | 2013-08-19 | 2015-02-26 | Wang Kangmei | Centrifugal conical-spray fuel spray nozzle |
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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 |