CN201858069U - Oil sprayer assembly of diesel engine suitable for multiple fuels - Google Patents
Oil sprayer assembly of diesel engine suitable for multiple fuels Download PDFInfo
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- CN201858069U CN201858069U CN2010206170249U CN201020617024U CN201858069U CN 201858069 U CN201858069 U CN 201858069U CN 2010206170249 U CN2010206170249 U CN 2010206170249U CN 201020617024 U CN201020617024 U CN 201020617024U CN 201858069 U CN201858069 U CN 201858069U
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- needle
- valve
- needle valve
- conical surface
- fuel
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Abstract
The utility model relates to an oil sprayer assembly of a diesel engine suitable for multiple fuels. A fuel passage, a fuel containing cavity, a needle valve guide hole, a needle rod hole, a sealing inner conical surface, an oil spraying hole and a lubricating oil passage are arranged on a needle valve body. The oil spraying hole is arranged on the sealing inner conical surface. The fuel passage is communicated with the fuel containing cavity. The lubricating oil passage is communicated with the needle valve guide hole. A guide segment is sheathed in the needle valve guide hole on the needle valve body. A conical surface sealing rod is arranged in the needle rod hole. A sealing outer conical surface of a needle valve is matched with the sealing inner conical surface of the needle valve body. A lubricating oil tank is arranged on the guide segment of the needle valve. When the needle valve is located at the limit position, the lubricating oil tank is communicated with the lubricating oil passage. As the lubricating oil tank is arranged on the guide segment of the needle valve, the axial length of the lubricating oil tank between the needle valve and the needle valve body is increased, the processing cost is reduced and dead blockage cannot be caused between the needle valve and the needle valve body due to lack of lubrication; as a wear-resistant coating is additionally arranged on the sealing outer conical surface of the needle valve, the service life of the sealing between the needle valve and the needle valve body can be prolonged and the leakage of fuel liquid can be prevented.
Description
Technical field:
The utility model relates to a kind of diesel injector, relates 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.
The model utility content:
The purpose of this utility model provides a kind of diesel injector idol part 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 utility model is taked 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 utility model 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 utility model;
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 embodiment of the present utility model 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 |
|---|---|---|---|
| CN2010206170249U CN201858069U (en) | 2010-11-11 | 2010-11-11 | Oil sprayer assembly of diesel engine suitable for multiple fuels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206170249U CN201858069U (en) | 2010-11-11 | 2010-11-11 | Oil sprayer assembly of diesel engine suitable for multiple fuels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858069U true CN201858069U (en) | 2011-06-08 |
Family
ID=44103877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206170249U Expired - Fee Related CN201858069U (en) | 2010-11-11 | 2010-11-11 | Oil sprayer assembly of diesel engine suitable for multiple fuels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858069U (en) |
-
2010
- 2010-11-11 CN CN2010206170249U patent/CN201858069U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20131111 |