CN102168637A - Injector nozzle matching parts for diesel engine - Google Patents
Injector nozzle matching parts for diesel engine Download PDFInfo
- Publication number
- CN102168637A CN102168637A CN2011101395230A CN201110139523A CN102168637A CN 102168637 A CN102168637 A CN 102168637A CN 2011101395230 A CN2011101395230 A CN 2011101395230A CN 201110139523 A CN201110139523 A CN 201110139523A CN 102168637 A CN102168637 A CN 102168637A
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- injector
- injector nozzle
- matching parts
- oil
- needle valve
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Abstract
The invention relates to injector nozzle matching parts for a diesel engine, which comprise an injector nozzle body (1), an injector nozzle needle valve (2), a needle valve spring (3), a fuel injector body (4), a fuel injector middleware (5) and a compression nut cap (6). The injector nozzle matching parts are characterized in that the injector nozzle body (1) and injector nozzle needle valve (2) form injector nozzle matching parts which are arranged below the fuel injector middleware (5); the needle valve spring (3) is arranged at the root part of the injector nozzle needle valve (3); the fuel injector middleware (5) and the injector nozzle matching parts are arranged below the fuel injector body (4) by the compression nut cap (6); and a sealed cone angle formed by the injector nozzle body (1) and the injector nozzle needle valve (2) is 90-150 degrees. The injector nozzle matching parts can effectively lower the limit of the minimum circulating section of the injector nozzle needle valve by means of increasing the sealed cone angle, thus greatly improving the use performance of a series of conventional injector nozzles on the conditions of high revolving speed and large fuel amount.
Description
Technical field
The invention belongs to the diesel engine field, be specifically related to a kind of injector nozzle matching parts of diesel engine.
Background technique
By improving the specific power that rotating speed or circulating fuel injection quantity can improve motor, yet along with engine speed improves, engine combustion cycles shortens, and corresponding oil spout continues the cycle and also will shorten; Along with the increase of the circulating fuel injection quantity of demand, the total area of nozzle hole of corresponding charge oil pressure and injector nozzle matching parts will increase.In a word, no matter be to promote rotating speed or raising circulating fuel injection quantity, all need higher injection rate.
By the structural design of injector nozzle matching parts as can be known, its main design parameters has needle lift, jet orifice structure, sealing cone angle, sealed diameter etc.Wherein P series is about 60 ° with S series injector nozzle matching parts sealing cone angle mostly.Along with the raising of engine speed and oil mass, the injector nozzle matching parts total area of nozzle hole increases, and in oil spout initial stage and oil spout later stage needle lift hour, the minimum actual internal area of injector nozzle matching parts is greater than total area of nozzle hole, plays the effect of throttling oil spout.Behind engine speed 〉=3600r/min, oil injection duration shortens to≤1.25ms, and the minimum actual internal area of oil spout idol part incites somebody to action 〉=40% greater than the shared time scale of the total face of spray orifice, and throttling action has limited the raising of injection rate greatly.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned deficiency, a kind of injector nozzle matching parts of diesel engine is provided, this injector nozzle matching parts can effectively reduce the restriction of the minimum flow area of injector valve by increasing the sealing cone angle, thereby improves the using scope of conventional serial oil nozzle under high rotating speed, big oil mass greatly.
Technological scheme of the present invention: a kind of injector nozzle matching parts of diesel engine, it comprises oil nozzle body, injector valve, needle valve spring, oil injector body, oil sprayer middleware and clamping nut, oil nozzle body and injector valve are formed injector nozzle matching parts, injector nozzle matching parts is arranged on oil sprayer intermediate below, needle valve spring is arranged on the root of injector valve, oil sprayer intermediate and injector nozzle matching parts are arranged on the oil injector body below by clamping nut, and the sealing cone angle that oil nozzle body and injector valve constitute is 90～150 °.
The present invention compared with prior art has following beneficial effect: the present invention is by optimizing the structural design of injector nozzle matching parts, do not changing under existing injector valve lift and the sealed diameter condition, after will sealing the cone angle increase, can effectively reduce the restriction of the minimum flow area of injector valve, thereby improve the using scope of conventional serial oil nozzle under high rotating speed, big oil mass greatly, under same needle valve stroke, oil spout structure, sealed diameter structure, injection rate can improve 10%.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an injector nozzle matching parts head partial enlarged drawing among the present invention.
Embodiment
A kind of injector nozzle matching parts of diesel engine, it comprises oil nozzle body 1, injector valve 2, needle valve spring 3, oil injector body 4, oil sprayer middleware 5 and clamping nut 6, oil nozzle body 1 is formed injector nozzle matching parts with injector valve 2, injector nozzle matching parts is arranged on oil sprayer intermediate 5 belows, needle valve spring 3 is arranged on the root of injector valve 2, oil sprayer intermediate 5 and injector nozzle matching parts are arranged on oil injector body 4 belows by clamping nut 6, and the sealing cone angle that oil nozzle body 1 and injector valve 2 constitute is 120 °.
As shown in Figure 1, general fuel system for diesel engine, fuel oil must spray in the cylinder through the spray orifice of injector nozzle matching parts at last through pump, pipeline, the inner oil duct of oil sprayer.Therefore, we can say injector nozzle matching parts be fuel oil must through the last section pipeline structure.During the injector nozzle matching parts design, must consider chamber structure and charge oil pressure, its sealing strip diameter affects the structure of needle valve spring, and for this programme electric-controlled fuel injector, sealed diameter also affects oil sprayer fluid power matching problem.Therefore, the sealed diameter of ordinary circumstance injector nozzle matching parts remains unchanged.By the formula of injector nozzle matching parts minimum flow area as can be known, under sealed diameter remained unchanged condition, increase minimum flow area can only increase needle lift or increase the sealing cone angle.Yet it is unfavorable that needle lift increases for shortening oil injection duration, therefore will satisfy the demand of high rotating speed and big flow motor, only can increase the sealing corners of the mouth of injector nozzle matching parts.The sealing cone angle bring up to 〉=90 ° after, under the same needle valve stroke, the injector nozzle matching parts minimum flow area will improve 30%～50%, will reduce the throttling action at oil nozzle place greatly, thus the raising oil sprayer injection rate.
Claims (1)
1. the injector nozzle matching parts of a diesel engine, it comprises oil nozzle body (1), injector valve (2), needle valve spring (3), oil injector body (4), oil sprayer middleware (5) and clamping nut (6), it is characterized in that oil nozzle body (1) and injector valve (2) composition injector nozzle matching parts, injector nozzle matching parts is arranged on oil sprayer intermediate (5) below, needle valve spring (3) is arranged on the root of injector valve (2), oil sprayer intermediate (5) and injector nozzle matching parts are arranged on oil injector body (4) below by clamping nut (6), and the sealing cone angle that oil nozzle body (1) and injector valve (2) constitute is 90～150 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101395230A CN102168637A (en) | 2011-05-25 | 2011-05-25 | Injector nozzle matching parts for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101395230A CN102168637A (en) | 2011-05-25 | 2011-05-25 | Injector nozzle matching parts for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102168637A true CN102168637A (en) | 2011-08-31 |
Family
ID=44489923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101395230A Pending CN102168637A (en) | 2011-05-25 | 2011-05-25 | Injector nozzle matching parts for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102168637A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410642A (en) * | 2013-07-02 | 2013-11-27 | 中国兵器工业集团第七0研究所 | High pressure common rail oil atomizer fuel oil injection law control body |
| CN103953484A (en) * | 2013-10-24 | 2014-07-30 | 中国船舶重工集团公司第七一一研究所 | Diesel injector for diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890660A (en) * | 1994-12-20 | 1999-04-06 | Lucas Industries Public Limited Company | Fuel injection nozzle |
| CN2864137Y (en) * | 2005-11-17 | 2007-01-31 | 中国兵器工业集团第七○研究所 | Thread valve body pressure room of diesel injector |
| CN101096939A (en) * | 2006-06-30 | 2008-01-02 | 柳州华威电控技术有限公司 | Electromagnetical type electric-controlled diesel oil fuel oil injector |
| CN101307741A (en) * | 2008-07-01 | 2008-11-19 | 浙江大学 | Engine fuel cylinder inner direct ejection device |
| CN101956635A (en) * | 2009-07-20 | 2011-01-26 | 柳州华威电控技术有限公司 | Electronically controlled diesel injector driven by electrostriction element |
-
2011
- 2011-05-25 CN CN2011101395230A patent/CN102168637A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890660A (en) * | 1994-12-20 | 1999-04-06 | Lucas Industries Public Limited Company | Fuel injection nozzle |
| CN2864137Y (en) * | 2005-11-17 | 2007-01-31 | 中国兵器工业集团第七○研究所 | Thread valve body pressure room of diesel injector |
| CN101096939A (en) * | 2006-06-30 | 2008-01-02 | 柳州华威电控技术有限公司 | Electromagnetical type electric-controlled diesel oil fuel oil injector |
| CN101307741A (en) * | 2008-07-01 | 2008-11-19 | 浙江大学 | Engine fuel cylinder inner direct ejection device |
| CN101956635A (en) * | 2009-07-20 | 2011-01-26 | 柳州华威电控技术有限公司 | Electronically controlled diesel injector driven by electrostriction element |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410642A (en) * | 2013-07-02 | 2013-11-27 | 中国兵器工业集团第七0研究所 | High pressure common rail oil atomizer fuel oil injection law control body |
| CN103953484A (en) * | 2013-10-24 | 2014-07-30 | 中国船舶重工集团公司第七一一研究所 | Diesel injector for diesel engine |
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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: 20110831 |