CN108708809A - A kind of fuel injector is fixed and clamped device - Google Patents
A kind of fuel injector is fixed and clamped device Download PDFInfo
- Publication number
- CN108708809A CN108708809A CN201810830159.4A CN201810830159A CN108708809A CN 108708809 A CN108708809 A CN 108708809A CN 201810830159 A CN201810830159 A CN 201810830159A CN 108708809 A CN108708809 A CN 108708809A
- Authority
- CN
- China
- Prior art keywords
- fuel injector
- cylinder head
- injector
- hole
- fastening bolt
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000005056 compaction Methods 0.000 abstract description 2
- 210000002683 foot Anatomy 0.000 description 14
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
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
It is fixed and clamped device the invention discloses a kind of fuel injector, including：Cylinder head, injector plate, fuel injector, fastening bolt, steel ball and cylinder head bolt, the injector plate is symmetrically arranged at the front end with the presser feet that bottom end is cambered surface, the steel ball is arranged in injector plate rear end bottom, the injector plate front end is contacted by presser feet with compression fuel injector both sides planar line, form two presser feet lines, the injector plate rear end is pressed on cylinder head bolt by steel ball by forms contact point, the midpoint of two presser feet lines forms isosceles triangular structure with contact point, the axis of the fastening bolt is in the centre symmetry line of isosceles triangular structure.The device by the above-mentioned means, fuel injector of the present invention is fixed and clamped will not make injector plate generate torsion tendency, it is ensured that fuel injector both sides uniform force in the compaction process of fastening bolt.
Description
Technical field
The present invention relates to Diesel Engine Technique Field, it is fixed and clamped device more particularly to a kind of fuel injector.
Background technology
Fastening generally use two ways of the diesel injector in cylinder head：First, fuel injector is passed through on fuel injector
External screw thread be fastened directly in cylinder head；Another kind is that fuel injector is fastened in cylinder head by injector plate.
Since the combustion gas explosion pressure in cylinder is higher, for the sealing etc. of guarantee fuel injector and cylinder head, pressing plate is usually
Rigid design.Since the problems such as Element Design quality, machining accuracy and assembly precision, is easy to cause injector plate unbalance stress,
Coordinate so as to cause fuel injector inside couple and abrasion and catching phenomenon occurs, leads to oil spout degradation, burning deteriorates, to lead
The decline of the economy and discharge index of diesel engine is caused to deteriorate.
In the prior art, patent application（Authorization Notice No. CN 201096049Y）Middle told pressing plate one end passes through ball
It is supported on cylinder cap（Or cylinder head bolt）Raised end face, on the other end compacting fuel injector of pressing plate, the spray that is connected on cylinder cap
Oily device pressing plate spherical surface is pressed on pressing plate, the axis of fuel injector, the axis of fastening bolt and ball and cylinder cap protrusion end face
Stress point and the extended line at ball center are mutually parallel.The technology by control the axis of the axis of fuel injector, fastening bolt with
And ball is mutually parallel with the extended line at ball center with the stress point of cylinder cap protrusion end face and reaches purpose of design, but for spray
Oily device pressing plate and fuel injector and the receiving of cylinder cap protrusion belong to point contact, when fastener axis not in above-mentioned 3 lines institute at geometry
When symmetrical centre, pressing plate will necessarily distort under the pressing force of fastener, lead to fuel injector unbalance stress.
The prior art usually only ensures the axis of fuel injector, the axis of fastening bolt and ball and cylinder cap in design
The stress point of raised end face and the extended line at ball center are mutually parallel.Since the axis of fastening bolt is not in pressing plate and related zero
On 3 lines institute line in a center of symmetry of part contact, when injector plate compresses, pressing plate will produce torsion tendency, cause and
The two points stress of fuel injector contact is uneven, so that fuel injector is deformed failure, needs to improve.
Invention content
It is fixed and clamped device the invention mainly solves the technical problem of providing a kind of fuel injector, avoids the torsion of pressing plate,
Promote fuel injector both sides uniform force.
In order to solve the above technical problems, one aspect of the present invention is：A kind of fuel injector is provided to be fixed and clamped
Device, including：Cylinder head, injector plate, fuel injector, fastening bolt, steel ball and cylinder head bolt are arranged in the cylinder head
There are mounting hole of oil sprayer, fastening bolt threaded hole and cylinder head bolt threaded hole, the fastening bolt threaded hole to be located at fuel injector
Between mounting hole and cylinder head bolt threaded hole, the fuel injector is mounted on mounting hole of oil sprayer, the cylinder head bolt peace
On cylinder head bolt threaded hole, the injector plate is symmetrically arranged at the front end with the presser feet that bottom end is cambered surface, the oil spout
Device both sides are symmetrically arranged with plane corresponding with presser feet, and the steel ball is arranged in injector plate rear end bottom, the fuel injector
Pressing plate front end is contacted by presser feet with compression fuel injector both sides planar line, two presser feet lines of formation, after the injector plate
End is pressed on cylinder head bolt by steel ball by forms contact point, and midpoint and the contact point of two presser feet lines form isosceles
Triangular structure, the axis of the fastening bolt is in the centre symmetry line of isosceles triangular structure, the fuel injector pressure
The through-hole of the centre symmetry line of vertical isosceles triangular structure is provided on plate, the fastening bolt bottom is fixed across through-hole
In fastening bolt threaded hole.
In a preferred embodiment of the present invention, the via top is provided with sphere hole, is provided on the sphere hole
Spheric washer.
In a preferred embodiment of the present invention, the fastening bolt is extended downwardly across spheric washer and through-hole.
In a preferred embodiment of the present invention, injector plate rear end bottom indent is provided with corresponding with steel ball
Embedded groove.
In a preferred embodiment of the present invention, the mounting hole of oil sprayer is parallel with fastening bolt threaded hole.
In a preferred embodiment of the present invention, the presser feet is integrated steel construction with injector plate.
The beneficial effects of the invention are as follows：A kind of fuel injector that the present invention points out is fixed and clamped device, and fastening bolt is vertical etc.
The centre symmetry line of lumbar triangle shape structure is had an effect, and in the compaction process of fastening bolt, pressing force can uniformly be implemented two
On bar presser feet line, injector plate will not be made to generate torsion tendency, it is ensured that fuel injector both sides uniform force is fixedly mounted more
Add reliable.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, wherein：
Fig. 1 is that a kind of fuel injector of the present invention is fixed and clamped the structural schematic diagram of one preferred embodiment of device；
Fig. 2 is the structural schematic diagram of injector plate in Fig. 1；
Fig. 3 is the stereogram of Fig. 2.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
~ Fig. 3 is please referred to Fig.1, the embodiment of the present invention includes：
A kind of fuel injector is fixed and clamped device, including：Cylinder head 1, injector plate 2, fuel injector 3, fastening bolt 4,6 and of steel ball
Cylinder head bolt 7 is provided with mounting hole of oil sprayer 10, fastening bolt threaded hole 9 and cylinder head bolt screw thread in the cylinder head 1
Hole 8, the fastening bolt threaded hole 9 is between mounting hole of oil sprayer 10 and cylinder head bolt threaded hole 8, the fuel injector peace
It is parallel with fastening bolt threaded hole 9 to fill hole 10.The fuel injector 3 is mounted on mounting hole of oil sprayer 10, the cylinder head spiral shell
Bolt 7 is mounted on cylinder head bolt threaded hole 8, easy to operate.
The injector plate 2 is symmetrically arranged at the front end with the presser feet 23 that bottom end is cambered surface 21, the presser feet 23 and fuel injector
Pressing plate 2 is integrated steel construction, and intensity is high, sound construction.
3 both sides of the fuel injector are symmetrically arranged with plane corresponding with presser feet 23, and the steel ball 6 is arranged in injector plate
2 rear ends bottom, 2 rear end bottom indent of the injector plate are provided with interference corresponding with steel ball 6 hole, and installation facility avoids
The slippage of steel ball 6.
2 front end of the injector plate is contacted by presser feet with compression 3 both sides planar line of fuel injector, and two presser feets are formed
Line, 1 rear end of the injector plate are pressed on cylinder head bolt 7 by steel ball 6 by form contact point, two presser feet lines
Midpoint and contact point form isosceles triangular structure, the axis of the fastening bolt 4 is in isosceles triangular structure
On heart line of symmetry, the through-hole 22 of the centre symmetry line of vertical isosceles triangular structure is provided on the injector plate 2, it is described
4 bottom of fastening bolt is fixed on across through-hole 22 in fastening bolt threaded hole 9, and installation and removal are more convenient.
The centre symmetry line of 4 vertical isosceles triangular structure of fastening bolt generates pressing force, in the compression of fastening bolt 4
Cheng Zhong, pressing force can uniformly be implemented on two presser feet lines, injector plate 2 will not be made to generate torsion tendency, it is ensured that oil spout
Device both sides uniform force is fixedly mounted relatively reliable.
22 top of the through-hole is provided with sphere hole, and spheric washer 5, the fastening bolt 4 are provided on the sphere hole
It is extended downwardly across spheric washer 5 and through-hole 22.Spheric washer 5 is placed on sphere hole, due to two sphere curvature radius
Consistent reason, during being pressed into contact with, the meeting automatic capturing of spheric washer 5 makes up mounting hole of oil sprayer 10 in cylinder head 1
With the error of the output in processing of fastening bolt threaded hole 9, installation accuracy is promoted.
The device in conclusion a kind of fuel injector that the present invention points out is fixed and clamped, the simple process and low cost of processing, knot
Structure is secured, and to the good fixing effect of fuel injector, use is relatively reliable.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (6)
- The device 1. a kind of fuel injector is fixed and clamped, which is characterized in that including：Cylinder head, injector plate, fuel injector, fastening spiral shell Bolt, steel ball and cylinder head bolt are provided with mounting hole of oil sprayer, fastening bolt threaded hole and cylinder head bolt in the cylinder head Threaded hole, the fastening bolt threaded hole is between mounting hole of oil sprayer and cylinder head bolt threaded hole, the fuel injector peace On mounting hole of oil sprayer, the cylinder head bolt is mounted on cylinder head bolt threaded hole, the injector plate front end It is symmetrically arranged with the presser feet that bottom end is cambered surface, the fuel injector both sides are symmetrically arranged with plane corresponding with presser feet, the steel ball It is arranged in injector plate rear end bottom, the injector plate front end is connect by presser feet with compression fuel injector both sides planar line It touches, forms two presser feet lines, the injector plate rear end is pressed on cylinder head bolt by steel ball by forms contact point, institute The midpoint and contact point for stating two presser feet lines form isosceles triangular structure, and the axis of the fastening bolt is perpendicular to isoceles triangle In the centre symmetry line of shape structure, the logical of the centre symmetry line of vertical isosceles triangular structure is provided on the injector plate Hole, the fastening bolt bottom are fixed on across through-hole in fastening bolt threaded hole.
- The device 2. fuel injector according to claim 1 is fixed and clamped, which is characterized in that the via top is provided with spherical surface Hole is provided with spheric washer on the sphere hole.
- The device 3. fuel injector according to claim 2 is fixed and clamped, which is characterized in that the fastening bolt passes through ball ring Circle and through-hole and extend downwardly.
- The device 4. fuel injector according to claim 1 is fixed and clamped, which is characterized in that injector plate rear end bottom Indent is provided with embedded groove corresponding with steel ball.
- The device 5. fuel injector according to claim 1 is fixed and clamped, which is characterized in that the mounting hole of oil sprayer and fastening Bolt thread hole is parallel.
- The device 6. fuel injector according to claim 1 is fixed and clamped, which is characterized in that the presser feet is with injector plate Integrated steel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830159.4A CN108708809A (en) | 2018-07-26 | 2018-07-26 | A kind of fuel injector is fixed and clamped device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830159.4A CN108708809A (en) | 2018-07-26 | 2018-07-26 | A kind of fuel injector is fixed and clamped device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108708809A true CN108708809A (en) | 2018-10-26 |
Family
ID=63874223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810830159.4A Pending CN108708809A (en) | 2018-07-26 | 2018-07-26 | A kind of fuel injector is fixed and clamped device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108708809A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109333401A (en) * | 2018-10-31 | 2019-02-15 | 安徽江淮汽车集团股份有限公司 | A kind of oil sprayer clamping mechanism for development experiments of burning |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9611131D0 (en) * | 1995-06-12 | 1996-07-31 | Daimler Benz Ag | Device for fastening an injection-nozzle holder |
| JPH11257193A (en) * | 1998-03-16 | 1999-09-21 | Nissan Diesel Motor Co Ltd | Nozzle holder clamping structure of direct injection-type diesel engine |
| KR20020085011A (en) * | 2001-05-04 | 2002-11-16 | 현대자동차주식회사 | Clamp bolt for injector |
| US6745752B1 (en) * | 2003-02-19 | 2004-06-08 | International Engine Intellectual Property Company, Llc | Fuel injector clamp with retaining ring |
| CN2739378Y (en) * | 2004-11-19 | 2005-11-09 | 上海柴油机股份有限公司 | Electric-controlle diesel engine fuel injector spherical compacting mechanism |
| CN201144752Y (en) * | 2007-12-11 | 2008-11-05 | 比亚迪股份有限公司 | Electric control diesel fuel injector fixing device |
| CN201358862Y (en) * | 2009-02-23 | 2009-12-09 | 中国重汽集团济南动力有限公司 | Fuel injector compaction apparatus |
| CN201582023U (en) * | 2009-12-18 | 2010-09-15 | 安徽全柴集团有限公司 | Device for fixing and clamping fuel injector of diesel engine |
| CN203404006U (en) * | 2013-07-11 | 2014-01-22 | 北汽福田汽车股份有限公司 | Oil atomizer pressing structure |
| CN208702592U (en) * | 2018-07-26 | 2019-04-05 | 江苏农华智慧农业科技股份有限公司 | A kind of fuel injector is fixed and clamped device |
-
2018
- 2018-07-26 CN CN201810830159.4A patent/CN108708809A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9611131D0 (en) * | 1995-06-12 | 1996-07-31 | Daimler Benz Ag | Device for fastening an injection-nozzle holder |
| JPH11257193A (en) * | 1998-03-16 | 1999-09-21 | Nissan Diesel Motor Co Ltd | Nozzle holder clamping structure of direct injection-type diesel engine |
| KR20020085011A (en) * | 2001-05-04 | 2002-11-16 | 현대자동차주식회사 | Clamp bolt for injector |
| US6745752B1 (en) * | 2003-02-19 | 2004-06-08 | International Engine Intellectual Property Company, Llc | Fuel injector clamp with retaining ring |
| CN2739378Y (en) * | 2004-11-19 | 2005-11-09 | 上海柴油机股份有限公司 | Electric-controlle diesel engine fuel injector spherical compacting mechanism |
| CN201144752Y (en) * | 2007-12-11 | 2008-11-05 | 比亚迪股份有限公司 | Electric control diesel fuel injector fixing device |
| CN201358862Y (en) * | 2009-02-23 | 2009-12-09 | 中国重汽集团济南动力有限公司 | Fuel injector compaction apparatus |
| CN201582023U (en) * | 2009-12-18 | 2010-09-15 | 安徽全柴集团有限公司 | Device for fixing and clamping fuel injector of diesel engine |
| CN203404006U (en) * | 2013-07-11 | 2014-01-22 | 北汽福田汽车股份有限公司 | Oil atomizer pressing structure |
| CN208702592U (en) * | 2018-07-26 | 2019-04-05 | 江苏农华智慧农业科技股份有限公司 | A kind of fuel injector is fixed and clamped device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109333401A (en) * | 2018-10-31 | 2019-02-15 | 安徽江淮汽车集团股份有限公司 | A kind of oil sprayer clamping mechanism for development experiments of burning |
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