CN102979654A - Cooling-type needle valve coupling with carbon deposition prevention effect - Google Patents
Cooling-type needle valve coupling with carbon deposition prevention effect Download PDFInfo
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- CN102979654A CN102979654A CN2012105575947A CN201210557594A CN102979654A CN 102979654 A CN102979654 A CN 102979654A CN 2012105575947 A CN2012105575947 A CN 2012105575947A CN 201210557594 A CN201210557594 A CN 201210557594A CN 102979654 A CN102979654 A CN 102979654A
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Abstract
The invention discloses a cooling-type needle valve coupling with a carbon deposition prevention effect. The cooling-type needle valve coupling comprises a needle valve body and a needle valve, which are assembled with each other. The needle valve is assembled in a valve chamber which is machined in the needle valve body; an annular clearance passage, through which a high pressure fuel passes, is formed between the outer circumference of the lower rod body of the needle valve and the inner wall of the valve chamber; and the annular clearance passage is communicated with an oil inlet passage. The cooling-type needle valve is characterized in that a cooling water jacket is fixedly mounted to the lower part of the needle valve body, a cooling chamber is formed between the cooling water jacket and the needle valve body, the needle valve body is provided with at least one group of cooling annular passages, the cooling annular passages are communicated with the cooling chamber, the opening at the two ends of each cooling annular passage are formed in the upper surface of the needle valve body; at least two jet holes are formed in the front end of the needle valve body and are communicated with the annular clearance passage. The cooling-type needle valve coupling has the advantages of smart structure, good performance, low oil consumption, less carbon deposition in the nozzle and long service life and can meet the needs for oil-fuel injector needle-valve couplings in marine diesel engines.
Description
Technical field
The present invention relates to the pintle nozzle match-ing parts of fuel injector for internal combustion engines, relate in particular 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 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 in the firing chamber with the air that enters into the firing chamber and forms good inflammable mixture.Pintle nozzle match-ing parts as the injector assembly core is a secondary precision pair, and guide cylinder face and the needle-valve body inner periphery on needle-valve top are done high-precision being slidingly matched, and its matching gap and surface roughness require very high.Needle-valve body, face of needle seating cooperate, and seal, and make it be in all the time closed condition under the effect of spring, only have when oil pressure reaches cracking pressure, and the needle-valve take-off, this moment, oil circuit was opened.
When diesel engine works, the pintle nozzle match-ing parts of oil sprayer is under high temperature, high pressure and the fast state all the time, and circulate owing to traditional pintle nozzle match-ing parts no-cooling-water lumen pore and cooling channel in this state, so cause easily pintle nozzle match-ing parts in hot environment, the situation of carbon distribution appears in the spray orifice of couple, causes oil dripping and atomization badness.Gently then make diesel oil because of the over-emitting black exhaust that can not fully burn, cause being short of power and the waste of the energy and the pollution of environment of motor, heavy then spray orifice is stopped up fully, cause the effect that can't form atomizing and cause this product to use and scrap.
Although existing cooling type pintle nozzle match-ing parts can reduce the temperature of pintle nozzle match-ing parts, 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 that needs at present research.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art present situation, and volume is little, performance good, oil consumption is low, discharge less, reliability is strong and a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts of long service life and provide.
The present invention solves the problems of the technologies described above the technological scheme that adopts:
A kind of anti-carbon deposition cooling type pintle nozzle match-ing parts, comprise equipped mutually needle-valve body and needle-valve, the needle-valve bedding-in is contained in the valve pocket that needle-valve body is shaped with, and be formed with the annular gas passageway that high pressure fuel passes through between the inwall of the external side face of the lower beam of needle-valve and valve pocket, annular gas passageway is communicated with oil inlet passage, wherein: needle-valve body bottom fixed cover is furnished with cooling jacket, be formed with cooling chamber between cooling jacket and the needle-valve body, needle-valve body is formed with at least one group of cooling circuit, and cooling circuit connection cooling chamber and both ends open are in the needle-valve body upper surface; The needle-valve body front end is formed with at least two spray orifices, and spray orifice is communicated with annular gas passageway.
For optimizing technique scheme, Adopts measure also comprises:
Above-mentioned needle-valve body front end is formed with sprayer body, is formed with the shower nozzle cavity in the sprayer body, and spray orifice is communicated with annular gas passageway by the shower nozzle cavity, and needle-valve is blocked the shower nozzle cavity by the piston cooperation with needle-valve body or is communicated with annular gas passageway.
Above-mentioned cooling jacket is shaped with cavity and the axis hole that concentric is connected, and the needle-valve body bottom is stretched into cavity and stretched out from axis hole.
Above-mentioned needle-valve body lower, outer perimeter indent is formed with ring surface, and ring surface cooperates the formation cooling chamber with cavity.
Above-mentioned cooling jacket and needle-valve body interference fit.
Above-mentioned needle-valve comprises that top has the upper body of rod of guide cylinder face, and has the tapering transition section between the lower body of rod and the upper body of rod.
The cylindricity of above-mentioned guide cylinder face is 0.002mm.
Above-mentioned needle-valve and needle-valve body are slidingly matched the gap in 0.003mm to 0.005mm scope, and surface roughness is lower than Ra0.05 μ m.
Compared with prior art, a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts of the present invention, comprise equipped mutually needle-valve body and needle-valve, the needle-valve bedding-in is contained in the valve pocket that needle-valve body is shaped with, and be formed with the annular gas passageway that high pressure fuel passes through between the inwall of the external side face of the lower beam of needle-valve and valve pocket, annular gas passageway is communicated with oil inlet passage, wherein: needle-valve body bottom fixed cover is furnished with cooling jacket, be formed with cooling chamber between cooling jacket and the needle-valve body, needle-valve body is formed with at least one group of cooling circuit, and cooling circuit connection cooling chamber and both ends open are in the needle-valve body upper surface; The needle-valve body front end is formed with at least two spray orifices, and spray orifice is communicated with annular gas passageway.In needle-valve body, be provided with two groups of cooling water circulation passages, in cooling type pintle nozzle match-ing parts in the past, generally only has one group of circulating water channel, cooling rate is slow, and cooling effect is bad, and the present invention adopts two circulating water channels to carry out multi-faceted cooling, at high temperature, in the working environment of high corrosion, good cooling effect can be played, the serious problem of pintle nozzle match-ing parts spray orifice carbon distribution can be effectively prevented.Simultaneously, be shaped with at least two spray orifices, can effectively reduce the problem that pintle nozzle match-ing parts that the spray orifice carbon distribution causes can't operate by increasing nozzle hole number, greatly improved the utilization rate of product, improve working life.The anterior termination of needle-valve body is shaped with spray orifice, milk capitiform sprayer body, spray orifice has certain angle of inclination, in order to guarantee 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 the even circumferential distribution design, guarantees the even of atomizing, and fuel oil is fully utilized.Cooling jacket of the present invention is shaped with cavity and the axis hole that concentric is connected, and the needle-valve body bottom is stretched into cavity and stretched out from axis hole, and needle-valve body lower, outer perimeter indent is formed with ring surface, and ring surface cooperates the formation cooling chamber with cavity.Cooling jacket Main Function of the present invention is to cooperate needle-valve body to consist of the cooling cavity with larger cooling side face, cooling jacket and the needle-valve body part that forms a whole, adopt cooling jacket to have manufacturing and characteristics easy for installation, and can effectively solve the situation that pintle nozzle match-ing parts easily causes spray orifice to stop up under hot environment.
The present invention has the advantages such as delicate structure, volume is little, performance good, oil consumption is low, reliability is strong, meet the requirement of current promotion energy-conserving and environment-protective, the reduce fuel oil consuming cost reduces toxic emission to greatest extent, can satisfy marine diesel engine to the Production requirement of Performance of Fuel Injection Nozzle.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the embodiment of the invention;
Fig. 2 is the sectional structure schematic representation of cooling jacket among Fig. 1;
Fig. 3 is that sectional view is looked on the right side of Fig. 1;
Fig. 4 is the sectional structure schematic representation of needle-valve body among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 to 4 is sectional structure schematic representation of the present invention.
Reference character wherein is: 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 chamber 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, comprise equipped mutually needle-valve body 1 and needle-valve 2, needle-valve 2 bedding-ins are contained in the valve pocket 11 that needle-valve body 1 is shaped with, and be formed with the annular gas passageway D that high pressure fuel passes through between the lower body of rod 22 outer circumferential faces of needle-valve 2 and the inwall of valve pocket 11, annular gas passageway D is communicated with oil inlet passage 13, wherein: needle-valve body 1 bottom fixed cover is furnished with cooling jacket 3, be formed with cooling chamber 15 between cooling jacket 3 and the needle-valve body 1, needle-valve body 1 is formed with two groups of cooling circuits 14, and cooling circuit 14 connection cooling chambers 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 is communicated with annular gas passageway D.
Among the embodiment, needle-valve body 1 front end is formed with sprayer body 12, be formed with shower nozzle cavity 12b in the sprayer body 12, spray orifice 12a is communicated with annular gas passageway D by shower nozzle cavity 12b, and needle-valve 2 is blocked shower nozzle cavity 12b by the piston cooperation with needle-valve body 1 or is communicated with annular gas passageway D.
Among the 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 stretched out from axis hole 32.
Among the embodiment, needle-valve body 1 lower, outer perimeter indent is formed with ring surface 1a, and ring surface 1a cooperates formation cooling chamber 15 with cavity 31.
Among the embodiment, cooling jacket 3 and needle-valve body 1 interference fit.
Among the embodiment, needle-valve 2 comprises that top 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.
Among the embodiment, the cylindricity of guide cylinder face 21a is 0.002mm.
Among the embodiment, needle-valve 2 is slidingly matched the gap in 0.003mm to 0.005mm scope with needle-valve body 1, and surface roughness is lower than Ra0.05 μ m.
The present invention is a kind of cooling type pintle nozzle match-ing parts peculiar to vessel, in needle-valve body 1, be provided with two groups of cooling water circulation passages, in cooling type pintle nozzle match-ing parts in the past, generally only have one group of circulating water channel, cooling rate is slow, cooling effect is bad, the present invention adopts two circulating water channels to carry out multi-faceted cooling, at high temperature, in the working environment of high corrosion, good cooling effect can be played, the serious problem of pintle nozzle match-ing parts spray orifice carbon distribution can be effectively prevented.Simultaneously, be shaped with at least two spray orifice 12a, can effectively reduce the problem that pintle nozzle match-ing parts that the spray orifice carbon distribution causes can't operate by increasing nozzle hole number, greatly improved the utilization rate of product, improve working life.Needle-valve body 1 anterior termination is shaped with spray orifice 12a's, milk capitiform sprayer body 12, spray orifice 12a has certain angle of inclination, in order to guarantee 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 the even circumferential distribution design, guarantees the even of atomizing, and fuel oil is fully utilized.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 stretched out from axis hole 32, and needle-valve body 1 lower, outer perimeter indent is formed with ring surface 1a, and ring surface 1a cooperates formation cooling chamber 15 with cavity 31.Cooling jacket 3 Main Functions of the present invention are to cooperate needle-valve body 1 to consist of the cooling cavity with larger cooling side face, cooling jacket 3 and needle-valve body 1 part that forms a whole, adopt cooling jacket 3 to have manufacturing and characteristics easy for installation, and can effectively solve the situation that pintle nozzle match-ing parts easily causes spray orifice to stop up under hot environment.
Delicate structure of the present invention, volume is little, performance good, oil consumption is low, discharging less, reliability is strong; It is few to have the interior carbon distribution of nozzle, and the advantages such as nozzle long service life can satisfy marine diesel engine to the production requirement of Performance of Fuel Injection Nozzle.
Most preferred embodiment of the present invention is illustrated, and various variations or the remodeling made by those of ordinary skills can not depart from the scope of the present invention.
Claims (8)
1. anti-carbon deposition cooling type pintle nozzle match-ing parts, comprise equipped mutually needle-valve body (1) 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 be formed with the annular gas passageway (D) that high pressure fuel passes through between the lower body of rod (22) outer circumferential face of needle-valve (2) and the inwall of valve pocket (11), described annular gas passageway (D) is communicated with oil inlet passage (13), it is characterized in that: described needle-valve body (1) bottom fixed cover is furnished with cooling jacket (3), be formed with cooling chamber (15) between described cooling jacket (3) and the needle-valve body (1), described needle-valve body (1) is formed with two groups of cooling circuits (14), and described cooling circuit (14) connection cooling chamber (15) and both ends open are in needle-valve body (1) upper surface; Described needle-valve body (1) front end is formed with at least two spray orifices (12a), and described spray orifice (12a) is communicated with annular gas passageway (D).
2. a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts according to claim 1, it is characterized in that: described needle-valve body (1) front end is formed with sprayer body (12), be formed with shower nozzle cavity (12b) in the described sprayer body (12), described spray orifice (12a) is communicated with annular gas passageway (D) by shower nozzle cavity (12b), and described needle-valve (2) is blocked shower nozzle cavity (12b) by the piston cooperation with needle-valve body (1) or is communicated with annular gas passageway (D).
3. a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts according to claim 2, it is characterized in that: 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 stretched out from axis hole (32).
4. a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts according to claim 3, it is characterized in that: described needle-valve body (1) lower, outer perimeter indent is formed with ring surface (1a), and described ring surface (1a) cooperates formation described cooling chamber (15) with cavity (31).
5. a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts according to claim 4 is characterized in that: described cooling jacket (3) and needle-valve body (1) interference fit.
6. a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts according to claim 5, it is characterized in that: described needle-valve (2) comprises that top has the upper body of rod (21) of 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).
7. a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts according to claim 6, it is characterized in that: the cylindricity of described guide cylinder face (21a) is 0.002mm.
8. a kind of anti-carbon deposition cooling type pintle nozzle match-ing parts according to claim 7 is characterized in that: described needle-valve (2) is slidingly matched the gap in 0.003mm to 0.005mm scope with needle-valve body (1), and surface roughness is lower than Ra0.05 μ m.
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 true CN102979654A (en) | 2013-03-20 |
| CN102979654B 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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Cited By (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 |
| CN105240180A (en) * | 2015-10-29 | 2016-01-13 | 常州机电职业技术学院 | Self-cleaning oil injector |
| CN106150816A (en) * | 2015-05-11 | 2016-11-23 | 朱海燕 | A kind of automotive mixed conjunction dynamical system |
| CN109715919A (en) * | 2016-09-22 | 2019-05-03 | 德尔福知识产权有限公司 | Dual fuel nozzle device |
| CN114542340A (en) * | 2022-03-30 | 2022-05-27 | 重庆红江机械有限责任公司 | Dual-fuel nozzle |
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| 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 needle valve matching part for 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 needle valve matching part for marine diesel engine |
Cited By (6)
| 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 | A kind of automotive mixed conjunction dynamical system |
| CN105240180A (en) * | 2015-10-29 | 2016-01-13 | 常州机电职业技术学院 | Self-cleaning oil injector |
| CN109715919A (en) * | 2016-09-22 | 2019-05-03 | 德尔福知识产权有限公司 | Dual fuel nozzle device |
| CN109715919B (en) * | 2016-09-22 | 2022-06-03 | 德尔福知识产权有限公司 | Dual fuel injector and nozzle assembly therefor |
| CN114542340A (en) * | 2022-03-30 | 2022-05-27 | 重庆红江机械有限责任公司 | Dual-fuel nozzle |
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| CN102979654B (en) | 2016-06-29 |
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