CN201582023U - Device for fixing and clamping fuel injector of diesel engine - Google Patents
Device for fixing and clamping fuel injector of diesel engine Download PDFInfo
- Publication number
- CN201582023U CN201582023U CN2009202993808U CN200920299380U CN201582023U CN 201582023 U CN201582023 U CN 201582023U CN 2009202993808 U CN2009202993808 U CN 2009202993808U CN 200920299380 U CN200920299380 U CN 200920299380U CN 201582023 U CN201582023 U CN 201582023U
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- CN
- China
- Prior art keywords
- fuel injector
- injector plate
- pressing plate
- cushion block
- diesel engine
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a device for fixing and clamping a fuel injector of a diesel engine. A fuel injector pressing plate of the device is Y-shaped; the middle part of the fuel injector is arranged in the Y-shaped hole of the Y-shaped pressing plate; the compressing surface is an arc surface; the orifice of the upper part of the bolt hole at the middle part of the fuel injector pressing plate is an arc surface orifice; the arc surface orifice is matched with a spherical washer; the bottom surface of the rear part of the fuel injector pressing plate is provided with a steel ball; one side of the bottom part of a cushion block of the U-shaped fuel injector pressing plate is provided with a short pin; the rear part of the fuel injector pressing plate is arranged in the U-shaped hole of the cushion block of the fuel injector pressing plate; the contacting surface of the steel ball on the fuel injector pressing plate and the cushion block of the fuel injector pressing plate is an inclined surface with the inclination angle the same as the installation angle of the fuel injector; the compressing end of the short bolt of the cylinder cover is provided with a pinhole; and the short pin at the bottom part of the cushion block of the fuel injector pressing plate is arranged in the pinhole of the compressing end of the short bolt of the cylinder cover. The device has an automatic adjustment function, avoids the phenomena of abraded matching parts, affection of spraying quality, worsened combustion and worsened emission due to bent and distortional deformation of the fuel injector, and is particularly applicable to the European III diesel engine with high cylinder explosion pressure.
Description
Technical field
The utility model relates to fastening clamper for fuel-injection device of diesel engine.
Background technique
In diesel engine when work, the particularly higher Europe III diesel engine of pressure of explosion,, gas burns in cylinder combustion, and maximum outbreak pressure can reach 120bar, and oil sprayer bears higher gas pressure, causes the axially frequent play of oil sprayer.In order to guarantee the sealing of oil sprayer, need oil sprayer to be fixed on the cylinder head with fastening clamper for fuel-injection device, and conventional fastening clamper for fuel-injection device of diesel engine mainly contains two kinds, a kind of fastening clamper for fuel-injection device of diesel engine is a screw fixation method, being about to oil sprayer directly is fixed on the cylinder head with screw thread, another kind of fastening clamper for fuel-injection device of diesel engine is with injector plate two ends screw thread oil sprayer to be fixed on the cylinder head, these two kinds of fastening clamper for fuel-injection device are rigid design, do not consider that oil sprayer is under the situation of impacting force that is subjected to fastening clamper for fuel-injection device and cylinder-firing pressure, produce bending deflection and torsional deformation and cause the oil sprayer matching part abrasion, influence the oil sprayer working stability, cause the jet quality variation, gaseous combustion worsens in the cylinder, and discharging descends.
The model utility content
Be rigid design in order to solve the existing diesel fastening clamper for fuel-injection device, easily produce the problem that distortion causes the oil sprayer matching part abrasion, the utility model provides a kind of new structure fastening clamper for fuel-injection device of diesel engine.
Concrete architecture advances technological scheme is as follows:
Fastening clamper for fuel-injection device of diesel engine comprises diesel engine cylinder cover 1, oil sprayer 2, injector plate 5 and cylinder head lag bolt 8, oil sprayer 2 is positioned at the oil injector hole on the diesel engine cylinder cover 1, and injector plate 5 middle parts are installed in cylinder of diesel engine by follower bolt 4 and cover;
Described injector plate 5 is a Y shape, and described oil sprayer 2 middle parts are positioned at the bifurcation mouth of Y shape injector plate 5, and the seal face of Y shape injector plate 5 is an arc surface; Injector plate 5 middle parts are provided with bolt hole, and the aperture, top of bolt hole is the arc surface aperture, and the cooperation of place, arc surface aperture is provided with spherical washer 3; Bottom surface, injector plate 5 rear portion is provided with steel ball 6;
Also comprise U-shaped injector plate cushion block 7, its bottom one side is provided with short pin, injector plate 5 rear portions are positioned at the U-shaped mouth of injector plate cushion block 7, and the steel ball 6 on the injector plate 5 is the inclined-plane with the surface of contact of injector plate cushion block 7, and its tilt angle is identical with oil sprayer 2 setting angles;
Described cylinder head lag bolt 8 compresses end and is provided with pin-and-hole, and the short pin of injector plate cushion block 7 bottoms is positioned at the pin-and-hole that cylinder head lag bolt 8 compresses end.
Between the U-shaped mouth inner side surface of the side of described injector plate 5 and injector plate cushion block 7 is Spielpassung, and gap value is the 0-0.036 millimeter.
Useful technique effect of the present utility model is: make the oil sprayer place of compressing adopt sphere to connect, injector plate realizes that by steel ball sphere connects with the injector plate cushion block place of compressing, the injector plate cushion block adopts finger setting to connect with the cylinder head lag bolt place of compressing, making oil sprayer form a lever supports, when oil sprayer has the axially rotation of micro-axial float and trace, or micro-axial float and trace are arranged axially during the trend of rotation, because spherical motion, the pin connection rotatablely moves and the lever principle effect, can effectively compensate oil sprayer axial float and axially rotation, avoid the oil sprayer matching part abrasion, simultaneously position that also can fuel injection correction device oil nozzle.This fastening clamper for fuel-injection device is comparatively suitable for Europe III diesel engine high-pressure co-rail system.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is a partial sectional view.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1 and Fig. 2, fastening clamper for fuel-injection device of diesel engine comprises diesel engine cylinder cover 1, oil sprayer 2, injector plate 5 and cylinder head lag bolt 8, and oil sprayer 2 is positioned at the oil injector hole on the diesel engine cylinder cover 1;
Injector plate 5 is a Y shape, sees Fig. 3, and oil sprayer 2 middle parts are positioned at the bifurcation mouth of Y shape injector plate 5, and the seal face of Y shape injector plate 5 is an arc surface; Injector plate 5 middle parts offer bolt hole, the aperture, top of bolt hole is the arc surface aperture, place, arc surface aperture cooperates is equipped with spherical washer 3, and injector plate 5 radial-plays are reduced as far as possible, and injector plate 5 is installed in cylinder of diesel engine by spherical washer 3 and follower bolt 4 and covers; Steel ball 6 is equipped with in bottom surface, injector plate 5 rear portion;
Also comprise U-shaped injector plate cushion block 7, its bottom one side is provided with short pin, injector plate 5 rear portions are positioned at the U-shaped mouth of injector plate cushion block 7, steel ball 6 on the injector plate 5 is the inclined-plane with the surface of contact of injector plate cushion block 7, its tilt angle is identical with oil sprayer 2 setting angles, and the radial-play of injector plate 5 is reduced as far as possible; Between the U-shaped mouth inner side surface of the side of injector plate 5 and injector plate cushion block 7 is Spielpassung, and gap value is the 0-0.036 millimeter, and injector plate 5 axial rotations are reduced as far as possible.Cylinder head lag bolt 8 compresses end and is provided with pin-and-hole, the short pin of injector plate cushion block 7 bottoms is positioned at the pin-and-hole that cylinder head lag bolt 8 compresses end, injector plate cushion block 7 can rotate freely in the pin-and-hole of cylinder head lag bolt 8, and injector plate 5 axial rotations are reduced as far as possible.
Claims (2)
1. fastening clamper for fuel-injection device of diesel engine, comprise diesel engine cylinder cover (1), oil sprayer (2), injector plate (5) and cylinder head lag bolt (8), oil sprayer (2) is positioned at the oil injector hole on the diesel engine cylinder cover (1), injector plate (5) middle part is installed in cylinder of diesel engine by follower bolt (4) and covers, and it is characterized in that:
Described injector plate (5) is a Y shape, and described oil sprayer (2) middle part is positioned at the bifurcation mouth of Y shape injector plate (5), and the seal face of Y shape injector plate (5) is an arc surface; Injector plate (5) middle part is provided with bolt hole, and the aperture, top of bolt hole is the arc surface aperture, and the cooperation of place, arc surface aperture is provided with spherical washer (3); Injector plate (5) bottom surface, rear portion is provided with steel ball (6);
Also comprise U-shaped injector plate cushion block (7), its bottom one side is provided with short pin, injector plate (5) rear portion is positioned at the U-shaped mouth of injector plate cushion block (7), steel ball (6) on the injector plate (5) is the inclined-plane with the surface of contact of injector plate cushion block (7), and its tilt angle is identical with oil sprayer (2) setting angle;
Described cylinder head lag bolt (8) compresses end and is provided with pin-and-hole, and the short pin of injector plate cushion block (7) bottom is positioned at the pin-and-hole that cylinder head lag bolt (8) compresses end.
2. fastening clamper for fuel-injection device of diesel engine according to claim 1 is characterized in that: be Spielpassung between the U-shaped mouth inner side surface of the side of described injector plate (5) and injector plate cushion block (7), gap value is the 0-0.036 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202993808U CN201582023U (en) | 2009-12-18 | 2009-12-18 | Device for fixing and clamping fuel injector of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202993808U CN201582023U (en) | 2009-12-18 | 2009-12-18 | Device for fixing and clamping fuel injector of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582023U true CN201582023U (en) | 2010-09-15 |
Family
ID=42724021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202993808U Expired - Fee Related CN201582023U (en) | 2009-12-18 | 2009-12-18 | Device for fixing and clamping fuel injector of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582023U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501193A (en) * | 2011-09-29 | 2012-06-20 | 重庆小康工业集团股份有限公司 | Split assembling mechanism of common rail injection system of diesel engine |
| CN103047065A (en) * | 2012-12-28 | 2013-04-17 | 潍柴动力股份有限公司 | Pressing device for diesel injector |
| CN103184961A (en) * | 2011-12-29 | 2013-07-03 | 北汽福田汽车股份有限公司 | Fuel injector assembly and power device comprising the same |
| CN103210204A (en) * | 2010-11-15 | 2013-07-17 | 奥迪股份公司 | A fastening arrangement of a fuel supply device on an internal combustion engine, and a method for fastening a fuel supply device to the internal combustion engine |
| CN104964153A (en) * | 2015-07-01 | 2015-10-07 | 苏州利宏原精密零件有限公司 | Nozzle support |
| CN105464872A (en) * | 2014-09-30 | 2016-04-06 | 本田技研工业株式会社 | Injector assembly |
| CN108708809A (en) * | 2018-07-26 | 2018-10-26 | 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 |
| 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 |
-
2009
- 2009-12-18 CN CN2009202993808U patent/CN201582023U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210204A (en) * | 2010-11-15 | 2013-07-17 | 奥迪股份公司 | A fastening arrangement of a fuel supply device on an internal combustion engine, and a method for fastening a fuel supply device to the internal combustion engine |
| CN103210204B (en) * | 2010-11-15 | 2015-08-05 | 奥迪股份公司 | The fixing device of fuel supply device on internal-combustion engine |
| CN102501193A (en) * | 2011-09-29 | 2012-06-20 | 重庆小康工业集团股份有限公司 | Split assembling mechanism of common rail injection system of diesel engine |
| CN102501193B (en) * | 2011-09-29 | 2014-03-12 | 重庆小康工业集团股份有限公司 | Split assembling mechanism of common rail injection system of diesel engine |
| CN103184961A (en) * | 2011-12-29 | 2013-07-03 | 北汽福田汽车股份有限公司 | Fuel injector assembly and power device comprising the same |
| CN103184961B (en) * | 2011-12-29 | 2015-07-08 | 北汽福田汽车股份有限公司 | Fuel injector assembly and power device comprising the same |
| CN103047065A (en) * | 2012-12-28 | 2013-04-17 | 潍柴动力股份有限公司 | Pressing device for diesel injector |
| CN105464872A (en) * | 2014-09-30 | 2016-04-06 | 本田技研工业株式会社 | Injector assembly |
| CN105464872B (en) * | 2014-09-30 | 2018-05-08 | 本田技研工业株式会社 | Injector assembly |
| CN104964153A (en) * | 2015-07-01 | 2015-10-07 | 苏州利宏原精密零件有限公司 | Nozzle support |
| CN108708809A (en) * | 2018-07-26 | 2018-10-26 | 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 |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20111218 |