CN201953537U - Marine diesel engine needle valve matching parts - Google Patents
Marine diesel engine needle valve matching parts Download PDFInfo
- Publication number
- CN201953537U CN201953537U CN2010206974368U CN201020697436U CN201953537U CN 201953537 U CN201953537 U CN 201953537U CN 2010206974368 U CN2010206974368 U CN 2010206974368U CN 201020697436 U CN201020697436 U CN 201020697436U CN 201953537 U CN201953537 U CN 201953537U
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- Prior art keywords
- needle valve
- needle
- marine diesel
- diesel engine
- valve body
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Abstract
The utility model discloses marine diesel engine needle valve matching parts, and relates to the technical field of marine diesel engine oil injectors. The marine diesel engine needle valve matching parts comprise a needle valve body (1) and a needle valve (2), wherein the needle valve (2) is bedded in the central hole of the needle valve body (1); the fit clearance is 0.003 to 0.005 mm; the surface roughness degree Ra is 0.04 to 0.06; the cylindricity is 0.001 to 0.003 mm; and the radial bouncing amplitude of a sealing cone of the needle valve body (1) is in the range of 0.001 to 0.003. The marine diesel engine needle valve matching parts have the advantages of ingenious structure, small volume, high performance, low oil consumption, less emission, high reliability and long service life.
Description
Technical field:
The utility model relates to the marine diesel engine fuel injector technical field, relates in particular to a kind of marine diesel oil needle valve coupling.
Background technique:
Oil sprayer is the important composition parts of diesel engine, and its major function is that the high-pressure diesel from Injection Pump is atomized by certain requirement, and is distributed to the good inflammable mixture of formation in the firing chamber.The operating ambient temperature height of traditional oil sprayer makes its working life short, and needle-valve body oil holding slot and shower nozzle endoporus aperture burr, and the concentricity of pintle nozzle match-ing parts endoporus, sealing cone, sealing section is not high.
The model utility content:
The purpose of this utility model provides a kind of marine diesel oil needle valve coupling, and it can be alleviated the working environment of injector assembly high temperature and improve its working life, delicate structure, volume is little, performance good, oil consumption is low, the discharging less, good reliability.
In order to solve the existing problem of background technique, the utility model is by the following technical solutions: it comprises needle-valve body and needle-valve, bedding-in has needle-valve in the needle-valve body mesopore, matching gap is 0.003-0.005mm, surface roughness Ra 0.04-0.06, cylindricity 0.001-0.003mm, the circular runout amplitude of the sealing cone of needle-valve body 1 is in the 0.001-0.003 scope.
Described needle-valve body end face inside is provided with a circle cooling channel, and in use, cooling water circulates in pintle nozzle match-ing parts inside by the cooling channel, plays cooling effect.
Needle-valve body electrolysis oil holding slot in the utility model, adopt the mode of electrolysis to remove the burr at oil inlet hole place, and the special-purpose brill spray orifice frock clamping of employing, conveniently use and reach the requirement of precision, the injection diameter of Φ 0.68 uses alloy bit to process, the spray orifice of processing adopts the universal tool microscope projector to detect, and guarantees parameter request; Adopt high-precision three station grinding machines, to endoporus, sealing cone, seal face is disposable processes, and guarantees concentric requirement.
The utlity model has delicate structure, volume is little, performance good, oil consumption is low, the discharging less, good reliability, the advantage of long service life.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
With reference to Fig. 1, this embodiment is by the following technical solutions: it comprises needle-valve body 1 and needle-valve 2, bedding-in has needle-valve 2 in needle-valve body 1 mesopore, matching gap is 0.003-0.005mm, surface roughness Ra 0.05, cylindricity 0.002mm, the circular runout amplitude of the sealing cone of needle-valve body 1 is in the 0.001-0.003 scope.
Described needle-valve body 1 end face inside is provided with a circle cooling channel, and in use, cooling water circulates in pintle nozzle match-ing parts inside by the cooling channel, plays cooling effect.
Needle-valve body electrolysis oil holding slot in this embodiment, adopt the mode of electrolysis to remove the burr at oil inlet hole place, and the special-purpose brill spray orifice frock clamping of employing, conveniently use and reach the requirement of precision, the injection diameter of Φ 0.68 uses alloy bit to process, the spray orifice of processing adopts the universal tool microscope projector to detect, and guarantees parameter request; Adopt high-precision three station grinding machines, to endoporus, sealing cone, seal face is disposable processes, and guarantees concentric requirement.
This embodiment has delicate structure, volume is little, performance good, oil consumption is low, the discharging less, good reliability, the advantage of long service life.
Claims (2)
1. marine diesel oil needle valve coupling, it comprises needle-valve body (1) and needle-valve (2), it is characterized in that bedding-in has needle-valve (2) in needle-valve body (1) mesopore, matching gap is 0.003-0.005mm, surface roughness Ra 0.04-0.06, cylindricity 0.001-0.003mm, the circular runout amplitude of the sealing cone of needle-valve body (1) is in the 0.001-0.003 scope.
2. marine diesel oil needle valve coupling according to claim 1 is characterized in that described needle-valve body (1) end face inside is provided with a circle cooling channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206974368U CN201953537U (en) | 2010-12-31 | 2010-12-31 | Marine diesel engine needle valve matching parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206974368U CN201953537U (en) | 2010-12-31 | 2010-12-31 | Marine diesel engine needle valve matching parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201953537U true CN201953537U (en) | 2011-08-31 |
Family
ID=44497652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206974368U Expired - Fee Related CN201953537U (en) | 2010-12-31 | 2010-12-31 | Marine diesel engine needle valve matching parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201953537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564469A (en) * | 2014-12-25 | 2015-04-29 | 余姚市舒春机械有限公司 | Needle valve mating part of diesel |
-
2010
- 2010-12-31 CN CN2010206974368U patent/CN201953537U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564469A (en) * | 2014-12-25 | 2015-04-29 | 余姚市舒春机械有限公司 | Needle valve mating part of diesel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |