CN102979654B - A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts - Google Patents
A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts Download PDFInfo
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- CN102979654B CN102979654B CN201210557594.7A CN201210557594A CN102979654B CN 102979654 B CN102979654 B CN 102979654B CN 201210557594 A CN201210557594 A CN 201210557594A CN 102979654 B CN102979654 B CN 102979654B
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Abstract
The invention discloses a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts, including the needle-valve body being equipped with mutually and needle-valve, needle-valve bedding-in is contained in the valve pocket that needle-valve body is shaped with, and it is formed with, between the inwall of the external side face of lower beam of needle-valve and valve pocket, the annular gas passageway that high pressure fuel passes through, annular gas passageway connects with oil inlet passage, wherein: needle-valve body bottom fixed cover is furnished with cooling jacket, cooling room it is formed with between cooling jacket and needle-valve body, needle-valve body is formed with least one set cooling circuit, and cooling circuit connection cooling room and both ends open are in needle-valve body upper surface；Needle-valve body front end is formed with at least two spray orifice, and spray orifice connects with annular gas passageway.This inventive structure is exquisite, performance is good, oil consumption is low has in nozzle the advantages such as the few long service life of carbon distribution, can meet the marine diesel demand to Performance of Fuel Injection Nozzle.
Description
Technical field
The present invention relates to the pintle nozzle match-ing parts of fuel injector for internal combustion engines, particularly relate to a kind of cooling environment protection type pintle nozzle match-ing parts with automatic cooling structure, specifically a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts.
Background technology
Fuel injector is the important composition parts of diesel engine, and its major function is to be atomized by certain requirement by the high-pressure diesel from injection pump, and is distributed in combustor and the air entering into combustor forms good combustion mixture.Pintle nozzle match-ing parts as injector assembly core is a secondary precision pair, and the guide cylinder face on needle-valve top and needle-valve body inner periphery make high-precision being slidably matched, and its fit clearance and surface roughness requirements are significantly high.Needle-valve body, face of needle seating coordinate, and seal, make it be closed all the time under the action of the spring, and only when oil pressure reaches to open pressure, needle-valve take-off, now oil circuit is opened.
When diesel engine normal operation, the pintle nozzle match-ing parts of fuel injector is under high temperature, high pressure and fast state all the time, and in this state owing to traditional pintle nozzle match-ing parts no-cooling-water lumen pore and cooling duct are circulated, so being easily caused pintle nozzle match-ing parts in hot environment, there is the situation of carbon distribution in the spray orifice of couple, causes oil dripping and atomization badness.Light then make diesel oil because can not fully burn and over-emitting black exhaust, cause being short of power and the pollution of the waste of the energy and environment of electromotor, heavy then spray orifice can be made completely plugged, cause the effect that cannot form atomization to cause that this product cannot use and scrap.
Although existing cooling type pintle nozzle match-ing parts can reduce the temperature of pintle nozzle match-ing parts, but dynamics is also not enough far away.The situation of spray orifice carbon distribution also happens occasionally, and therefore, how further the cooling performance of booster injection valve coupling is the problem being presently required research.
Summary of the invention
The technical problem to be solved is for above-mentioned prior art present situation, and provide that volume is little, performance good, oil consumption is low, discharge less, a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts of highly reliable and long service life.
This invention address that the technical scheme that above-mentioned technical problem adopts is:
A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts, including the needle-valve body being equipped with mutually and needle-valve, needle-valve bedding-in is contained in the valve pocket that needle-valve body is shaped with, and it is formed with, between the inwall of the external side face of lower beam of needle-valve and valve pocket, the annular gas passageway that high pressure fuel passes through, annular gas passageway connects with oil inlet passage, wherein: needle-valve body bottom fixed cover is furnished with cooling jacket, cooling room it is formed with between cooling jacket and needle-valve body, needle-valve body is formed with least one set cooling circuit, and cooling circuit connection cooling room and both ends open are in needle-valve body upper surface；Needle-valve body front end is formed with at least two spray orifice, and spray orifice connects with annular gas passageway.
For optimizing technique scheme, the measure taked also includes:
Above-mentioned needle-valve body front end is formed with sprayer body, is formed with shower nozzle cavity in sprayer body, and spray orifice is connected with annular gas passageway by shower nozzle cavity, and needle-valve passes through piston cooperation and blocked with annular gas passageway by shower nozzle cavity or connect with needle-valve body.
Above-mentioned cooling jacket is shaped with cavity and the axis hole that concentric is connected, and needle-valve body bottom is stretched into cavity and stretches out from axis hole.
Above-mentioned needle-valve body lower, outer perimeter indent is formed with ring surface, and ring surface and cavity cooperatively form cooling room.
Above-mentioned cooling jacket and needle-valve body interference fit.
Above-mentioned needle-valve includes top and has the upper body of rod in guide cylinder face, and has tapering transition section between the lower body of rod and the upper body of rod.
The cylindricity in above-mentioned guide cylinder face is 0.002mm.
Above-mentioned needle-valve and needle-valve body are slidably matched gap in 0.003mm to 0.005mm scope, and surface roughness is lower than Ra0.05 μm.
Compared with prior art, a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts of the present invention, including the needle-valve body being equipped with mutually and needle-valve, needle-valve bedding-in is contained in the valve pocket that needle-valve body is shaped with, and it is formed with, between the inwall of the external side face of lower beam of needle-valve and valve pocket, the annular gas passageway that high pressure fuel passes through, annular gas passageway connects with oil inlet passage, wherein: needle-valve body bottom fixed cover is furnished with cooling jacket, cooling room it is formed with between cooling jacket and needle-valve body, needle-valve body is formed with least one set cooling circuit, and cooling circuit connection cooling room and both ends open are in needle-valve body upper surface；Needle-valve body front end is formed with at least two spray orifice, and spray orifice connects with annular gas passageway.Two groups of cooling water circulation passages it are provided with in needle-valve body, in conventional cooling type pintle nozzle match-ing parts, general only one group of circulating water channel, cooling rate is slow, and cooling effect is bad, and the present invention adopts Two-way Cycle aquaporin to carry out multi-faceted cooling, at high temperature, in the working environment of high corrosion, it is possible to play good cooling effect, can effectively prevent the problem that pintle nozzle match-ing parts spray orifice carbon distribution is serious.Meanwhile, it is shaped with at least two spray orifice, can effectively reduce, by increasing nozzle hole number, the problem that the pintle nozzle match-ing parts that spray orifice carbon distribution causes cannot operate, substantially increase the utilization rate of product, improve service life.Termination, needle-valve body front portion is shaped with spray orifice, milk capitiform sprayer body, spray orifice has certain angle of inclination, in order to ensure the equilibrium of combustion chamber of air cylinder's oil atomizing, parameters of injector holes is 11 to Φ, 0.58 ± 0.01mm, spray orifice is even circumferential distribution design, it is ensured that atomization uniform, to the sufficiently conducted utilization of fuel oil.The cooling jacket of the present invention is shaped with cavity and the axis hole that concentric is connected, and needle-valve body bottom is stretched into cavity and stretches out from axis hole, and needle-valve body lower, outer perimeter indent is formed with ring surface, and ring surface and cavity cooperatively form cooling room.The cooling jacket Main Function of the present invention is to cooperate with needle-valve body and constitutes a cooling cavity with bigger cooling side face, cooling jacket and needle-valve body form a whole part, adopt cooling jacket to have processing and manufacturing and a feature easy for installation, and can effectively solve pintle nozzle match-ing parts and easily cause the situation of spray orifice blocking in high temperature environments.
The advantages such as the present invention has delicate structure, volume is little, performance good, oil consumption is low, highly reliable, meet the current requirement advocating energy-conserving and environment-protective, fuel oil consuming cost can be reduced to greatest extent, reduce toxic emission, the marine diesel Production requirement to Performance of Fuel Injection Nozzle can be met.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the sectional structure schematic diagram of cooling jacket in Fig. 1；
Sectional view is looked on the right side that Fig. 3 is Fig. 1；
Fig. 4 is the sectional structure schematic diagram of needle-valve body in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 to 4 is the sectional structure schematic diagram of the present invention.
Accompanying drawing therein is labeled as: needle-valve body 1, ring surface 1a, valve pocket 11, sprayer body 12, spray orifice 12a, shower nozzle cavity 12b, oil inlet passage 13, cooling circuit 14, cooling room 15, needle-valve 2, the upper body of rod 21, the lower body of rod 22, tapering transition section 23, cooling jacket 3, cavity 31, axis hole 32, annular gas passageway D.
A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts of the present invention, including the needle-valve body 1 being equipped with mutually and needle-valve 2, needle-valve 2 bedding-in is contained in the valve pocket 11 that needle-valve body 1 is shaped with, and it is formed with, between the inwall of the lower body of rod 22 outer peripheral face of needle-valve 2 and valve pocket 11, the annular gas passageway D that high pressure fuel passes through, annular gas passageway D connects with oil inlet passage 13, wherein: needle-valve body 1 bottom fixed cover is furnished with cooling jacket 3, cooling room 15 it is formed with between cooling jacket 3 and needle-valve body 1, needle-valve body 1 is formed with two groups of cooling circuits 14, cooling circuit 14 connection cooling room 15 and both ends open are in needle-valve body 1 upper surface；Needle-valve body 1 front end is formed with spray orifice 12a, and spray orifice 12a connects with annular gas passageway D.
In embodiment, needle-valve body 1 front end is formed with sprayer body 12, being formed with shower nozzle cavity 12b, spray orifice 12a in sprayer body 12 to be connected with annular gas passageway D by shower nozzle cavity 12b, needle-valve 2 by shower nozzle cavity 12b and annular gas passageway D blocking-up or is connected by piston cooperation with needle-valve body 1.
In embodiment, cooling jacket 3 is shaped with cavity 31 and the axis hole 32 that concentric is connected, and needle-valve body 1 bottom is stretched into cavity 31 and stretches out from axis hole 32.
In embodiment, needle-valve body 1 lower, outer perimeter indent is formed with ring surface 1a, ring surface 1a and cooperatively forms cooling room 15 with cavity 31.
In embodiment, cooling jacket 3 and needle-valve body 1 interference fit.
In embodiment, needle-valve 2 includes top and has the upper body of rod 21 of guide cylinder face 21a, and has tapering transition section 23 between the lower body of rod 22 and the upper body of rod 21.
In embodiment, the cylindricity of guide cylinder face 21a is 0.002mm.
In embodiment, needle-valve 2 and needle-valve body 1 are slidably matched gap in 0.003mm to 0.005mm scope, and surface roughness is lower than Ra0.05 μm.
The present invention is a kind of cooling type pintle nozzle match-ing parts peculiar to vessel, two groups of cooling water circulation passages it are provided with in needle-valve body 1, in conventional cooling type pintle nozzle match-ing parts, general only one group of circulating water channel, cooling rate is slow, cooling effect is bad, the present invention adopts Two-way Cycle aquaporin to carry out multi-faceted cooling, in high temperature, the working environment of high corrosion, good cooling effect can be played, can effectively prevent the problem that pintle nozzle match-ing parts spray orifice carbon distribution is serious.Meanwhile, it is shaped with at least two spray orifice 12a, can effectively reduce, by increasing nozzle hole number, the problem that the pintle nozzle match-ing parts that spray orifice carbon distribution causes cannot operate, substantially increase the utilization rate of product, improve service life.The anterior termination of needle-valve body 1 is shaped with spray orifice 12a's, milk capitiform sprayer body 12, spray orifice 12a has certain angle of inclination, in order to ensure the equilibrium of combustion chamber of air cylinder's oil atomizing, spray orifice 12a parameter is 11 to Φ, 0.58 ± 0.01mm, spray orifice is even circumferential distribution design, it is ensured that atomization uniform, to the sufficiently conducted utilization of fuel oil.The cooling jacket 3 of the present invention is shaped with cavity 31 and the axis hole 32 that concentric is connected, and needle-valve body 1 bottom is stretched into cavity 31 and stretches out from axis hole 32, and needle-valve body 1 lower, outer perimeter indent is formed with ring surface 1a, ring surface 1a and cooperatively forms cooling room 15 with cavity 31.Cooling jacket 3 Main Function of the present invention is to cooperate with needle-valve body 1 and constitutes a cooling cavity with bigger cooling side face, cooling jacket 3 and needle-valve body 1 form a whole part, adopt cooling jacket 3 to have processing and manufacturing and a feature easy for installation, and can effectively solve pintle nozzle match-ing parts and easily cause the situation of spray orifice blocking in high temperature environments.
Present configuration is exquisite, volume is little, performance good, oil consumption is low, discharge less, highly reliable；There is carbon distribution in nozzle few, the advantage such as nozzle long service life, the marine diesel production requirement to Performance of Fuel Injection Nozzle can be met.
Highly preferred embodiment of the present invention illustrates, those of ordinary skill in the art the various changes made or remodeling are all without departing from the scope of the present invention.
Claims (1)
1. an anti-carbon deposition cooling type pintle nozzle match-ing parts, including the needle-valve body (1) being equipped with mutually and needle-valve (2), described needle-valve (2) bedding-in is contained in the valve pocket (11) that needle-valve body (1) is shaped with, and between the inwall of the lower body of rod (22) outer peripheral face of needle-valve (2) and valve pocket (11), it is formed with the annular gas passageway (D) that high pressure fuel passes through, described annular gas passageway (D) connects with oil inlet passage (13), described needle-valve body (1) front end is formed with sprayer body (12), it is formed with shower nozzle cavity (12b) in described sprayer body (12), described needle-valve body (1) front end is formed with at least two spray orifice (12a), spray orifice (12a) has certain angle of inclination, described spray orifice (12a) is connected with annular gas passageway (D) by shower nozzle cavity (12b), described needle-valve (2) and needle-valve body (1) are coordinated shower nozzle cavity (12b) and annular gas passageway (D) blocking-up by piston or connect；Described needle-valve (2) includes top and has the upper body of rod (21) in guide cylinder face (21a), and has tapering transition section (23) between the described lower body of rod (22) and the upper body of rod (21)；The cylindricity in described guide cylinder face (21a) is 0.002mm；Described needle-valve body (1) bottom fixed cover is furnished with cooling jacket (3), is formed with cooling room (15) between described cooling jacket (3) and needle-valve body (1)；Described cooling jacket (3) is shaped with cavity (31) and the axis hole (32) that concentric is connected, and described needle-valve body (1) bottom is stretched into cavity (31) and stretches out from axis hole (32)；Described needle-valve body (1) lower, outer perimeter indent is formed with ring surface (1a), and described ring surface (1a) and cavity (31) cooperatively form described cooling room (15)；Described cooling jacket (3) and needle-valve body (1) interference fit；It is characterized in that: described needle-valve body (1) is formed with two groups of coolings circuit (14), described cooling circuit (14) connection cooling room (15) and both ends open are in needle-valve body (1) upper surface, anti-carbon deposition cooling type pintle nozzle match-ing parts adopts Two-way Cycle aquaporin to carry out multi-faceted cooling, in high temperature, the high working environment corroded, can effectively prevent pintle nozzle match-ing parts spray orifice from forming carbon distribution；Described needle-valve (2) and needle-valve body (1) are slidably matched gap in 0.003mm to 0.005mm scope, surface roughness is lower than Ra0.05 μm, described sprayer body is milk capitiform, and the parameter of described spray orifice (12a) is Φ 0.58 ± 0.01mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210557594.7A CN102979654B (en) | 2012-12-20 | 2012-12-20 | A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210557594.7A CN102979654B (en) | 2012-12-20 | 2012-12-20 | A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts |
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| Publication Number | Publication Date |
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| CN102979654A CN102979654A (en) | 2013-03-20 |
| CN102979654B true CN102979654B (en) | 2016-06-29 |
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| CN201210557594.7A Active CN102979654B (en) | 2012-12-20 | 2012-12-20 | A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts |
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Families Citing this family (5)
| 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 |
| CN106150816A (en) * | 2015-05-11 | 2016-11-23 | 朱海燕 | Hybrid power system for automobile |
| CN105240180B (en) * | 2015-10-29 | 2017-10-31 | 常州机电职业技术学院 | Self-cleaning oil sprayer |
| GB2554368B (en) * | 2016-09-22 | 2020-06-03 | Delphi Tech Ip Ltd | Dual fuel injector nozzle with an anti-leakage feature |
| CN114542340A (en) * | 2022-03-30 | 2022-05-27 | 重庆红江机械有限责任公司 | Dual-fuel nozzle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102659A (en) * | 1985-04-01 | 1986-02-10 | 大连工学院 | Multi-hole injector with small pressure chamber |
| CN1831321A (en) * | 2005-03-09 | 2006-09-13 | 无锡油泵油嘴研究所 | Fuel spray nozzle for premixed combustion of IC engine |
| CN102003320A (en) * | 2010-12-17 | 2011-04-06 | 无锡威孚长安有限责任公司 | Oil nozzle coupling part |
| CN102400825A (en) * | 2011-12-20 | 2012-04-04 | 余姚市舒春机械有限公司 | Cooling type needle valve coupling part of marine diesel engine |
-
2012
- 2012-12-20 CN CN201210557594.7A patent/CN102979654B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102659A (en) * | 1985-04-01 | 1986-02-10 | 大连工学院 | Multi-hole injector with small pressure chamber |
| CN1831321A (en) * | 2005-03-09 | 2006-09-13 | 无锡油泵油嘴研究所 | Fuel spray nozzle for premixed combustion of IC engine |
| CN102003320A (en) * | 2010-12-17 | 2011-04-06 | 无锡威孚长安有限责任公司 | Oil nozzle coupling part |
| CN102400825A (en) * | 2011-12-20 | 2012-04-04 | 余姚市舒春机械有限公司 | Cooling type needle valve coupling part of marine diesel engine |
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| CN102979654A (en) | 2013-03-20 |
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