CN106194537A - A kind of damp type fuel injecting method and damp type atomizer - Google Patents
A kind of damp type fuel injecting method and damp type atomizer Download PDFInfo
- Publication number
- CN106194537A CN106194537A CN201610544420.5A CN201610544420A CN106194537A CN 106194537 A CN106194537 A CN 106194537A CN 201610544420 A CN201610544420 A CN 201610544420A CN 106194537 A CN106194537 A CN 106194537A
- Authority
- CN
- China
- Prior art keywords
- section
- damper portion
- needle
- damp type
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
- F02M2200/185—Fuel-injection apparatus having means for maintaining safety not otherwise provided for means for improving crash safety
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of damp type fuel injecting method and damp type atomizer.Valve body includes pressure chamber, fuel feed hole and multiple nozzle opening.Pressure chamber is made up of the section of damping, guide section and oil storage section, and needle also includes damper portion, and this damper portion is positioned at damping section, and the diameter of damping section is more than the diameter of damper portion, and the diameter of this damper portion is more than the diameter of guide section.Storing a small amount of fuel oil in damping section, when needle falls after rise to valve body, damper portion enters damping section, is extruded by fuel oil.Fuel oil slows down the needle shock to valve body during being extruded, it is to avoid part injury.After damper portion enters damping section, fuel oil can limit again needle and reversely beat, it is to avoid secondary fuel injection.
Description
Technical field
The present invention relates to diesel engine fuel injecting device, particularly relate to damp type fuel injecting method and damp type atomizer.
Background technology
Atomizer is made up of with valve body needle.Under normal conditions, needle is limited in valve body, closes nozzle opening.Electromagnetism etc.
After driving means drives needle to move, high-pressure diesel can spray from nozzle opening.After oil spout, needle returns in valve body.?
In prior art, needle is each made of a metal with valve body, and intermetallic Fast Collision may produce beats, and impact stops speed oil,
Frequent impact also easy injuring part.
Summary of the invention
The present invention proposes a kind of damp type fuel injecting method and damp type atomizer, arranges damping mechanism, it is to avoid needle
Reversely beat, reduce parts depreciation.
The technical scheme is that and be achieved in that:
A kind of damp type fuel injecting method, it is characterised in that the opening and closing of application valve body end, needle end nozzle opening；At needle afterbody
Arranging damper portion, damper portion is positioned at damping section, and reserved diesel oil in damping section, this damper portion delays the needle shock to valve body.
A kind of damp type atomizer, including valve body and needle, described valve body includes pressure chamber, fuel feed hole and multiple oil spout
Hole, described fuel feed hole is connected to described pressure chamber, and this pressure chamber is connected to described nozzle opening, and described needle is positioned at this pressure chamber
In, described needle includes conical seal, and this conical seal is pressed on described nozzle opening, it is characterised in that described pressure chamber
Being made up of damping section, guide section and oil storage section, described needle also includes damper portion, and this damper portion is positioned at described damping section,
The diameter of described damping section is more than the diameter of described damper portion, and the diameter of this damper portion is more than the diameter of described guide section.
In the damp type atomizer of the present invention, the height of described damper portion is more than described damping section.
In the damp type atomizer of the present invention, described damping section, guide section and oil storage section are coaxially arranged.
In the damp type atomizer of the present invention, between described oil storage section and fuel feed hole, it is provided with an arc transiting surface.
Implement this damp type atomizer of the present invention, in having the advantages that damping section, store a small amount of fuel oil, when
When needle falls after rise to valve body, damper portion enters damping section, is extruded by fuel oil.Fuel oil slows down needle to valve body during being extruded
Shock, it is to avoid part injury.After damper portion enters damping section, fuel oil can limit again needle and reversely beat, it is to avoid secondary fuel injection.
Even if damper portion completely attaches to the bottom of damping section, fuel oil still will not cover the top of damper portion, it is to avoid valve needle movements is by volume
Outer restriction.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this damp type atomizer of the present invention；
Fig. 2 is the partial view of Fig. 1；
Fig. 3 is the partial view at the A of Fig. 1；
Fig. 4 is the schematic diagram of another state of Fig. 3；
Fig. 5 is the partial view of Fig. 3.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe wholely.
Such as this damp type atomizer of Fig. 1 to the present invention shown in 5, including valve body 100 and needle 200.Described valve body
100 include that pressure chamber 110, fuel feed hole 120 and multiple nozzle opening 130, described fuel feed hole 120 are connected to described pressure chamber 110,
This pressure chamber 110 is connected to described nozzle opening 130, and described needle 200 is positioned at this pressure chamber 110.Described needle 200 includes cone
Shape sealing 210, this conical seal 210 is pressed on described nozzle opening 130.Conical seal 210 can be polymorphic structure, with
Just additional sealing effectiveness is reached.
As Fig. 1,2, described pressure chamber 110 is made up of damping section 111, guide section 112 and oil storage section 113, described damping
Section 111, guide section 112 and oil storage section 113 are coaxial.201310285655.3 the structure that deviates to side of that damping position
It is unfavorable for that needle positions.Described needle 200 also includes damper portion 220, and this damper portion 220 is positioned at described damping section 111.Described
The diameter of damping section 111 is more than the diameter of described damper portion 220, and the diameter of this damper portion 220 is more than described guide section 112
Diameter.Storing a small amount of fuel oil in damping section 111, when needle 200 falls after rise to valve body 100, damper portion 220 enters damping section 111,
Fuel oil is extruded.Fuel oil slows down the needle 200 shock to valve body 100 during being extruded, it is to avoid part injury.Damper portion
After 220 enter damping section 111, fuel oil can limit again needle 200 and reversely beat, it is to avoid secondary fuel injection.The height of described damper portion 220
Degree is more than described damping section 111.Even if this structure is conducive to damper portion 220 to completely attach to the bottom of damping section 111, fuel oil is the most not
The top of damper portion 220 can be covered, it is to avoid needle 200 motion is additionally limited.Additionally, described oil storage section 113 and fuel feed hole
Being provided with an arc transiting surface 121 between 120, this arc transiting surface 121 can avoid cavitation, it is to avoid part is corroded.
The top of existing conical seal main seal nozzle opening, causes the comburant in combustor can be directly entered cone
Conical region below shape sealing.In the present embodiment, conical seal 210 includes first annular seal section 211 and second
Ring packing section 212, described first annular seal section 211 is positioned at the top of the described nozzle opening 130 of at least one, and described second
Ring packing section 212 is positioned at the lower section of the described nozzle opening 130 of at least one.First annular seal section 211 and the second annular are close
Envelope section 212 fully seals nozzle opening 130 respectively from both sides, diesel oil both can have been stoped from top to enter nozzle opening 130, can stop again combustion
Burn indoor comburant and enter the conical region below pressure chamber 110.Described conical seal 210 also includes the 3rd ring packing
Section 213, the 3rd ring packing section 213 is positioned at the lower section of the described nozzle opening 130 of at least one.When valve body 100 is provided with multiple rows of
During nozzle opening 130, the 3rd ring packing section 213 also can play respective action.Described first annular seal section 211 and the second annular
Seal section 212 connects through an arc guide surface 214, and the bootable diesel oil of arcuate structure between seal section flows out nozzle opening 130.
As the preferred structure of indefiniteness, valve body 100 can also have intersection spray orifice 140, institute outside nozzle opening 130
State intersection spray orifice 140 and be positioned at the lower section of described nozzle opening 130.Described intersection spray orifice 140 includes the first fuel feed hole 141, second enters
Oilhole 142 and oil outlet 143, this first fuel feed hole 141 and the second fuel feed hole 142 be respectively positioned on described conical seal 210 with
Between oil outlet 143.Described first fuel feed hole 141 and the second fuel feed hole 142 are connected to described oil outlet 143, this oil outlet
The sectional area of 143 is less than described first fuel feed hole 141 and the sectional area sum of the second fuel feed hole 142.Separate first enters
Oilhole 141 and the second fuel feed hole 142 all can oil-feed, this diesel oil imports and sprays after oil outlet 143.Oil outlet 143 area is less, bavin
Oil forms turbulent flow after leaving oil outlet 143, and the diesel oil after ejection is more easy to and air contact, improves efficiency of combustion.Described fuel-displaced
The sectional area in hole 143 is more than the sectional area of described first fuel feed hole 141.The sectional area of oil outlet 143 should be greater than a fuel feed hole
The sectional area of 120, it is ensured that diesel oil has enough spaces to flow out.The axis phase of described first fuel feed hole 141 and the second fuel feed hole 142
Hand over and form acute angle.Two fuel feed holes 120 acutangulated mutually advantageously reduce resistance when diesel oil imports.Described first fuel feed hole
Being provided with arc enlarging 144 between 141 and described oil outlet 143, the maximum secting area of this arc enlarging 144 is more than described oil outlet
The sectional area of 143.Arc enlarging 144 area is relatively big, is conducive to the formation of turbulent flow.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (5)
1. a damp type fuel injecting method, it is characterised in that the opening and closing of application valve body end, needle end nozzle opening；At needle tail
Portion arranges damper portion, and damper portion is positioned at damping section, and reserved diesel oil in damping section, this damper portion delays needle to hit valve body
Hit.
2. a damp type atomizer, including valve body and needle, described valve body includes pressure chamber, fuel feed hole and multiple oil spout
Hole, described fuel feed hole is connected to described pressure chamber, and this pressure chamber is connected to described nozzle opening, and described needle is positioned at this pressure chamber
In, described needle includes conical seal, and this conical seal is pressed on described nozzle opening, it is characterised in that described pressure chamber
Being made up of damping section, guide section and oil storage section, described needle also includes damper portion, and this damper portion is positioned at described damping section,
The diameter of described damping section is more than the diameter of described damper portion, and the diameter of this damper portion is more than the diameter of described guide section.
Damp type atomizer the most according to claim 2, it is characterised in that the height of described damper portion is more than described damping
Section.
Damp type atomizer the most according to claim 2, it is characterised in that described damping section, guide section and oil storage section
Coaxially arranged.
Damp type atomizer the most according to claim 2, it is characterised in that be provided with one between described oil storage section and fuel feed hole
Arc transiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610544420.5A CN106194537A (en) | 2016-07-12 | 2016-07-12 | A kind of damp type fuel injecting method and damp type atomizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610544420.5A CN106194537A (en) | 2016-07-12 | 2016-07-12 | A kind of damp type fuel injecting method and damp type atomizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106194537A true CN106194537A (en) | 2016-12-07 |
Family
ID=57476461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610544420.5A Pending CN106194537A (en) | 2016-07-12 | 2016-07-12 | A kind of damp type fuel injecting method and damp type atomizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106194537A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2318387A (en) * | 1996-10-15 | 1998-04-22 | Bosch Gmbh Robert | I.c. engine fuel-injector with outwardly opening valve member and hydraulic damping of the opening stroke |
| CN1550661A (en) * | 2003-04-23 | 2004-12-01 | ����B��W���ͻ������ɷ�����˾ | Device for damping the closing of an injector needle of a fuel injector |
| CN1711415A (en) * | 2002-11-11 | 2005-12-21 | 罗伯特·博世有限公司 | Fuel injection valve for internal combustion engines |
| CN104334866A (en) * | 2012-06-05 | 2015-02-04 | 卡特彼勒发动机有限及两合公司 | Injection nozzle |
| CN205823522U (en) * | 2016-07-12 | 2016-12-21 | 江西汇尔油泵油嘴有限公司 | A kind of atomizer of diesel engine |
-
2016
- 2016-07-12 CN CN201610544420.5A patent/CN106194537A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2318387A (en) * | 1996-10-15 | 1998-04-22 | Bosch Gmbh Robert | I.c. engine fuel-injector with outwardly opening valve member and hydraulic damping of the opening stroke |
| CN1711415A (en) * | 2002-11-11 | 2005-12-21 | 罗伯特·博世有限公司 | Fuel injection valve for internal combustion engines |
| CN1550661A (en) * | 2003-04-23 | 2004-12-01 | ����B��W���ͻ������ɷ�����˾ | Device for damping the closing of an injector needle of a fuel injector |
| CN104334866A (en) * | 2012-06-05 | 2015-02-04 | 卡特彼勒发动机有限及两合公司 | Injection nozzle |
| CN205823522U (en) * | 2016-07-12 | 2016-12-21 | 江西汇尔油泵油嘴有限公司 | A kind of atomizer of diesel engine |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |
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| WD01 | Invention patent application deemed withdrawn after publication |