CN101985912A - Diesel injector coupler applied to multiple fuels - Google Patents
Diesel injector coupler applied to multiple fuels Download PDFInfo
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- CN101985912A CN101985912A CN2010105524221A CN201010552422A CN101985912A CN 101985912 A CN101985912 A CN 101985912A CN 2010105524221 A CN2010105524221 A CN 2010105524221A CN 201010552422 A CN201010552422 A CN 201010552422A CN 101985912 A CN101985912 A CN 101985912A
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- needle valve
- fuel
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Abstract
The invention discloses a diesel injector coupler applied to multiple fuels. A needle valve body is provided with a fuel passage, a fuel accommodating cavity, a needle valve guide hole, a needle bar hole, a sealed inner conical surface, an oil jet hole and a lubricating oil passage, wherein the oil jet hole is formed on the sealed inner conical surface; the fuel passage is communicated with the fuel accommodating cavity; the lubricating oil passage is communicated with the needle valve guide hole; a guide section is sleeved in the needle valve guide hole on the needle valve body; a conical surface sealing bar is positioned in the needle bar hole; the sealed outer conical surface of a needle valve is matched with the sealed inner conical surface of the needle valve body; the guide section of the needle valve is provided with a lubrication groove; and when the needle valve is positioned at a limit position, the lubrication groove is communicated with the lubricating oil passage. The lubrication groove is formed on the guide section of the needle valve so as to increase the axial length of the lubrication groove between the needle valve and the needle valve body, reduce the processing cost and prevent the needle valve and the needle valve body from being blocked due to lubrication lack; and an abrasion-resistant coating is arranged on the sealed outer conical surface of the needle valve so as to prolong the sealing life between the needle valve and the needle valve body and prevent the fuel liquid from leaking.
Description
Technical field:
The present invention relates to a kind of diesel injector, relate in particular to the oil sprayer idol part of diesel injector.
Background technique:
Injection Pump is the most key component in the combustion system of diesel engine, and it directly has influence on the exhaust index of diesel engine, and along with the raising of environmental requirement, the exhaust index of diesel engine improves constantly, and diesel engine all requires to reach Europe II, Europe III emission request now.Simultaneously, continuous expansion along with the application area of diesel powered, the social recoverable amount of diesel engine constantly increases, and the consumption of diesel oil increases year by year, because the petroleum resources in the whole world are limited, and it is exhausted day by day, the alternative fuel of diesel oil is all being sought in countries in the world, and at present, the dimethyl ether that extracts from coal is the clean fuel of the alternative diesel oil of generally acknowledging, in addition, industrial chemical such as methyl alcohol, ethanol also is the desirable clean fuel that substitutes diesel oil.Yet, diesel injector idol part is when work, must have good lubricating condition between needle-valve and the needle-valve body, kill phenomenon otherwise just be easy to generate, because all than little a lot of of the viscosity of diesel oil, for example the viscosity of dimethyl ether only is 0.15Kg/ms to the viscosity of dimethyl ether, methyl alcohol, ethanol, 3～8Kg/ms, therefore, existing diesel injection pump is not suitable for using diesel oil alternative fuel such as dimethyl ether, methyl alcohol, ethanol.Disclose one kind of multiple fuel diesel machine injector nozzle matching partses in patent 200620127617.0, it has offered oil groove at the needle-valve body endoporus of oil sprayer idol part, and oil leab communicates with oil groove, makes the good lubricating condition of formation between needle-valve body and the needle-valve.
Summary of the invention:
The diesel injector idol part that the purpose of this invention is to provide a kind of suitable pluralities of fuel, it both had been applicable to diesel oil, also be applicable to the relatively poor liquid fuels of self-lubricating property such as dimethyl ether, methyl alcohol, ethanol, can solve in the oil sprayer idol part lubrication problem between the needle-valve body and needle-valve ideally, prevent between needle-valve body and the needle-valve for want of lubricated produce kill phenomenon.
The technological scheme that the present invention takes is as follows:
The diesel injector idol part of described suitable pluralities of fuel, it is made up of needle-valve body and needle-valve, on needle-valve body, be provided with fuel channel, fuel cavity volume, needle-valve pilot hole, needle bar hole, sealing inner conical surface, nozzle opening and oil leab, nozzle opening is opened on the sealing inner conical surface, fuel channel and fuel cavity volume interlink, and oil leab and needle-valve pilot hole interlink; Described needle-valve is made up of guide section, conical surface seal bar and sealing male cone (strobilus masculinus), the guide section of needle-valve is sleeved in the needle-valve pilot hole on the needle-valve body, the conical surface seal bar is arranged in needle bar hole, the sealing male cone (strobilus masculinus) of needle-valve cooperates with sealing inner conical surface on the needle-valve body, on the guide section of needle-valve, have oil groove, when needle-valve was in limit position, oil groove communicated with oil leab.
Further, when needle-valve was in the limes superiors position, oil groove communicated with oil leab.
Further, on needle-valve, have two road oil grooves, and two road oil grooves are divided into impartial three parts vertically with the guide section of needle-valve, link to each other by helical oil groove between the two road oil grooves.
Further, on the sealing male cone (strobilus masculinus) of needle-valve, scribble wear resistant coating equably.
Because the pressure lubrication trapped fuel structure in the oil sprayer idol part between pintle valve seat and the needle-valve, oil groove is arranged on the guide section of needle-valve, both increased the oil groove axial length between needle-valve and the needle-valve body, guaranteed to form lubricant film between the two, and simplified the processing technology of pressure lubrication, reduced processing cost, make the present invention can not only be suitable for the injection of organic-fuels such as dimethyl ether, methyl alcohol, ethanol, and can be because of not lacking the lubricated stuck phenomenon that produces between needle-valve and the needle-valve body; On the sealing male cone (strobilus masculinus) of needle-valve, scribble wear resistant coating equably, can prolong the sealing life between needle-valve and the needle-valve body, prevent the seepage of fuel fluid.
Its working procedure is as follows:
The fuel inflow path is: band compression ignite feed liquid is pressed into the fuel cavity volume from fuel channel, leads to sealing inner conical surface place then along the gap between needle bar hole and the conical surface seal bar.Because fuel fluid has pressure, and the guide section diameter of needle-valve is greater than the diameter of the conical surface seal bar of its hypomere, when the pressure in the fuel cavity volume surpasses predetermined pressure, move on the needle-valve, the conical surface of conical surface seal bar lower end breaks away from the sealing male cone (strobilus masculinus), and fuel under high pressure liquid is the vaporific firing chamber that sprays into from nozzle opening, after descending, the pressure of fuel cavity volume resets under the compressing of needle-valve at spring, the conical surface of needle-valve lower end is sealed the nozzle opening face again, and the fuel cavity volume is further boosted, so circulation.
The lubricant oil inflow path: extreme pressure lubricant is pressed into guiding fitting surface between needle-valve and the needle-valve body from oil leab, and enters in the oil groove on the needle-valve, along with moving up and down of needle-valve, forms lubricant film at needle-valve with the guiding section of cooperation of needle-valve body.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of needle-valve body;
Fig. 3 is the structural representation of needle-valve;
Among the figure, the 1-needle-valve body; The 11-fuel channel; 12-fuel cavity volume; 13-needle-valve pilot hole; The 14-needle bar hole; 15-seals inner conical surface; The 16-nozzle opening; The 17-oil leab; The 2-needle-valve; The 21-guide section; 22-conical surface seal bar; 23-seals male cone (strobilus masculinus); The 24-oil groove; The 25-helical oil groove; The 26-wear resistant coating.
Embodiment:
Illustrate the specific embodiment of the present invention below:
Embodiment 1: the diesel injector idol part of described suitable pluralities of fuel, it is made up of needle-valve body 1 and needle-valve 2, on needle-valve body 1, be provided with fuel channel 11, fuel cavity volume 12, needle-valve pilot hole 13, needle bar hole 14, sealing inner conical surface 15, nozzle opening 16 and oil leab 17, nozzle opening 16 is opened on the sealing inner conical surface 15, fuel channel 11 interlinks with fuel cavity volume 12, and oil leab 17 interlinks with needle-valve pilot hole 13; Described needle-valve 2 is made up of guide section 21, conical surface seal bar 22 and sealing male cone (strobilus masculinus) 23, the guide section 21 of needle-valve 2 is sleeved in the needle-valve pilot hole 13 on the needle-valve body 1, conical surface seal bar 22 is arranged in needle bar hole 14, the sealing male cone (strobilus masculinus) 23 of needle-valve 2 cooperates with sealing inner conical surface 15 on the needle-valve body 1, on sealing male cone (strobilus masculinus) 23, be provided with wear resistant coating 26, have oil groove 24 on the guide section 21 of needle-valve 2, when needle-valve 2 was in limit position, oil groove 24 communicated with oil leab 17.
Embodiment 2: in embodiment 1, oil groove 24 that the position is set is relevant with oil leab 17 exit positions, oil leab 17 outlets both can be communicated with oil groove 24 when needle-valve 2 is in the limit inferior position, also can when needle-valve 2 is in the limes superiors position, communicate with oil groove 24.
Embodiment 3: have two road oil grooves 24 on needle-valve 2, and two road oil grooves 24 are divided into impartial three parts vertically with the guide section 21 of needle-valve 2, are linked to each other by helical oil groove 25 between the two road oil grooves 24.
Claims (4)
1. the diesel injector of suitable pluralities of fuel idol part, it is made up of needle-valve body (1) and needle-valve (2), it is characterized in that: on needle-valve body (1), be provided with fuel channel (11), fuel cavity volume (12), needle-valve pilot hole (13), needle bar hole (14), sealing inner conical surface (15), nozzle opening (16) and oil leab (17), nozzle opening (16) is opened on the sealing inner conical surface (15), fuel channel (11) interlinks with fuel cavity volume (12), and oil leab (17) interlinks with needle-valve pilot hole (13); Described needle-valve (2) is made up of guide section (21), conical surface seal bar (22) and sealing male cone (strobilus masculinus) (23), the guide section (21) of needle-valve (2) is sleeved in the needle-valve pilot hole (13) on the needle-valve body (1), conical surface seal bar (22) is arranged in needle bar hole (14), the sealing male cone (strobilus masculinus) (23) of needle-valve (2) cooperates with sealing inner conical surface (15) on the needle-valve body (1), on the guide section (21) of needle-valve (2), have oil groove (24), when needle-valve (2) when being in limit position, oil groove (24) communicates with oil leab (17).
2. according to the diesel injector idol part of the described suitable pluralities of fuel of claim 1, it is characterized in that: when needle-valve (2) was in the limes superiors position, oil groove (24) communicated with oil leab (17).
3. according to the even part of the diesel injector of the described suitable pluralities of fuel of claim 1, it is characterized in that: on needle-valve (2), have two road oil grooves (24), and two road oil grooves (24) are divided into impartial three parts vertically with the guide section (21) of needle-valve (2), are linked to each other by helical oil groove (25) between the two road oil grooves (24).
4. according to the diesel injector idol part of the described suitable pluralities of fuel of claim 1, it is characterized in that: on the sealing male cone (strobilus masculinus) (23) of needle-valve (2), scribble wear resistant coating (26) equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105524221A CN101985912A (en) | 2010-11-11 | 2010-11-11 | Diesel injector coupler applied to multiple fuels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105524221A CN101985912A (en) | 2010-11-11 | 2010-11-11 | Diesel injector coupler applied to multiple fuels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101985912A true CN101985912A (en) | 2011-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105524221A Pending CN101985912A (en) | 2010-11-11 | 2010-11-11 | Diesel injector coupler applied to multiple fuels |
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| CN (1) | CN101985912A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475739A (en) * | 2015-08-26 | 2017-03-08 | 博世汽车柴油系统有限公司 | The nozzle member of fuel injector and its manufacture method |
| CN108953115A (en) * | 2018-09-27 | 2018-12-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of atomized lubrication device, crankshaft, compressor and refrigerator |
| CN109695516A (en) * | 2017-10-24 | 2019-04-30 | 东方技术股份有限公司 | Improve the gaseous fuel automobile injector of lubrication property |
-
2010
- 2010-11-11 CN CN2010105524221A patent/CN101985912A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106475739A (en) * | 2015-08-26 | 2017-03-08 | 博世汽车柴油系统有限公司 | The nozzle member of fuel injector and its manufacture method |
| CN106475739B (en) * | 2015-08-26 | 2019-04-23 | 博世汽车柴油系统有限公司 | The nozzle member and its manufacturing method of fuel injector |
| CN109695516A (en) * | 2017-10-24 | 2019-04-30 | 东方技术股份有限公司 | Improve the gaseous fuel automobile injector of lubrication property |
| CN108953115A (en) * | 2018-09-27 | 2018-12-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of atomized lubrication device, crankshaft, compressor and refrigerator |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110316 |