CN102562396A - Diesel engine oil injector hold-down device - Google Patents
Diesel engine oil injector hold-down device Download PDFInfo
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- CN102562396A CN102562396A CN2012100076213A CN201210007621A CN102562396A CN 102562396 A CN102562396 A CN 102562396A CN 2012100076213 A CN2012100076213 A CN 2012100076213A CN 201210007621 A CN201210007621 A CN 201210007621A CN 102562396 A CN102562396 A CN 102562396A
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- briquetting
- dunnage
- clamping part
- oil sprayer
- bolt
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Abstract
The invention belongs to the technical field of accessories of internal combustion engines, and particularly relates to a diesel engine oil injector hold-down device. A supporting plate is fixed on a cylinder head boss, a press block is arranged on the supporting plate, a vertical surface of the oil injector is clamped by an opening end of a clamp part of the press block, an arc bottom surface of the clamp part is pressed on a pressurizing surface of the oil injector, an arc groove of the bottom surface of the press block contacts with a supporting ball head on the supporting plate, and the press block presses the oil injector on an oil injector mounting hole by the aid of the opening end of the clamp art around the supporting ball head under action of press block bolts. The problems that position selection range is small and interference among parts is easy to be caused due to the fact that a press block fulcrum is arranged on a cylinder head in the prior art are solved, the space of the cylinder head is utilized sufficiently, and the supporting plate with the supporting ball head is mounted on the cylinder head. Besides, the supporting plate is flexible in shape design and mounting, the cylinder head can be designed freely, and components closely related with economy, dynamic property and emission performance of engines are easy to be arranged on the cylinder head, so that the integral performance of the engine can be improved conveniently. The diesel engine oil injector hold-down device is suitable for cylinder heads of diesel engines in different types.
Description
Technical field
The invention belongs to internal-combustion engine appurtenances technical field, particularly a kind of diesel injector hold down gag.
Background technique
Diesel injector is very crucial parts in internal-combustion engine, need be with briquetting that oil sprayer is fastening in installation process.It is loosening to design the unreasonable oil sprayer that will cause, and tilts, and makes engine operation unstable, even causes large quantities of Accident due to qualitys.At present oil sprayer all is to fix through briquetting mostly, has arranged bolt hole on the briquetting, and the briquetting bolt through passing this bolt hole and certain strong point on the cylinder cap just can be fastening with oil sprayer.But oil sprayer is not in case after the typing, because of the requirement of technology and cost, can change its structure and size basically.But because diesel engine cylinder cover structure, valve are arranged and oil sprayer is arranged differently with model, and the interference with rocking arm because valve is passed a bridge makes possibly cause cylinder cap integral arrangement scheme to be failed by the strong point that just is difficult to arrange briquetting on some cylinder cap.Therefore need a kind of simple in structure, injector pressing device of helping cylinder cap component flexible arrangement.
Summary of the invention
The objective of the invention is to solve described simple in structure, the injector pressing device problem that helps cylinder head component flexible arrangement of background technique; A kind of diesel injector hold down gag is provided, and the diesel injector hold down gag comprises briquetting 1, dunnage 2, supports bulb 3, briquetting bolt 4 and spherical washer 5, and there is 1 bolt hole 101 that passes end face and bottom surface at the middle part of said briquetting 1; Bolt hole 101 is a conical surface 102 at the edge of end face; One end of briquetting 1 is a clamping part, and clamping part has a clamping part opening 103, and the thickness between two oil sprayer facades 601 of its width and oil sprayer 6 is identical; The bottom surface at clamping part opening 103 places of oil sprayer clamping part is a clamping part lower arcuate surface 104; It is characterized in that said briquetting has 1 arc groove 105 on 1 the other end bottom surface, there is a dunnage bottom surface boss 202 at middle part, said dunnage 2 bottom surfaces; Tapped hole 201 passes end face and dunnage bottom surface boss 202; On the center line of dunnage 2, hemispheric support bulb 3 is fixed on dunnage 2 end faces, 4 fixedly circular hole 203 be distributed in the Si Jiaochu of dunnage 2;
Said clamping part lower arcuate surface 104 is a convex arc surface;
It is the line contact that said clamping part lower arcuate surface 104 is pressed in that oil sprayer adds on the pressure surface 602, and Line of contact adds on the center line of pressure surface 602 at oil sprayer;
Said dunnage 2 is structure as a whole with support bulb 3 or supports and implant dunnage 2 after bulb 3 is made separately.
The present invention has made full use of the above space of valve gap bridge on the cylinder cap; Dunnage 2 is installed on cylinder cap, on dunnage 2, arranges the briquetting strong point, only through a structure and simple dunnage 2 thereof; Just realized arranging the scheme of the briquetting strong point on valve top; It is more free to make on the cylinder cap other component arrange, easy arrangement and the closely-related parts of motor Economy, power character and emission performance have the overall performance of raising motor and reduce the function of cylinder cap size, weight.
Beneficial effect of the present invention is: briquetting supporting plate structure of the present invention is simple, easy for installation; Made full use of the space more than valve is passed a bridge; Solved the problem of the briquetting strong point, having increases the advantage that the cylinder head component are arranged degrees of freedom, is applicable to multiple diesel engine cylinder cover.For Dual Over Head Camshaft cylinder head scheme, have the camshaft of reducing spacing, dwindle the size of transmitting gear between camshaft, the advantage of weight reduction.For the cylinder cap scheme of the strong point of on cylinder cap, having arranged the oil sprayer briquetting, behind employing the present invention, make the cylinder cap design compacter, arrangement of parts also can alleviate cylinder cap weight more flexibly.
Description of drawings
Fig. 1 is a diesel injector hold down gag know-why structure diagram;
Fig. 2 is the briquetting schematic bottom view;
Fig. 3 is the dunnage schematic bottom view;
Fig. 4 is a diesel injector hold down gag application implementation illustration intention.
Among the figure, 1--briquetting, 101--bolt hole, 102--conical surface, 103--clamping part opening, 104--clamping part lower arcuate surface; The 105--arc groove, the 2--dunnage, the 201--tapped hole, 202--dunnage bottom surface boss, 203--is circular hole fixedly, and 3--supports bulb; 4--briquetting bolt, the 5--spherical washer, the 6--oil sprayer, 601--oil sprayer facade, the 602--oil sprayer adds pressure surface; 7--cylinder cap boss, the 8--cylinder cap, the 9--valve is passed a bridge, 10--valve port, 11--valve spring assembly.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is further described.
Fig. 1 is a diesel injector hold down gag know-why structure diagram, and the diesel injector hold down gag comprises briquetting 1, dunnage 2, supports bulb 3, briquetting bolt 4 and spherical washer 5.
There is 1 bolt hole 101 that passes end face and bottom surface at the middle part of briquetting 1, and bolt hole 101 is a conical surface 102 at the edge of end face.As shown in Figure 2; One end of briquetting 1 is a clamping part; Clamping part has a clamping part opening 103, and the thickness between two oil sprayer facades 601 of its width and oil sprayer 6 is identical, and the bottom surface at clamping part opening 103 places of oil sprayer clamping part is a clamping part lower arcuate surface 104; Clamping part lower arcuate surface 104 is a convex arc surface, in the other end bottom surface of briquetting 1 arc groove 105 is arranged.Fig. 3 is the dunnage schematic bottom view; There is a dunnage bottom surface boss 202 at middle part, dunnage 2 bottom surfaces; Tapped hole 201 passes end face and dunnage bottom surface boss 202, and on the center line of dunnage 2, hemispheric support bulb 3 is fixed on dunnage 2 end faces; Support bulb 3 and be structure as a whole with dunnage 2,4 fixedly circular hole 203 be distributed in the Si Jiaochu of dunnage 2.
Fig. 4 is a diesel injector hold down gag application implementation illustration intention; Diesel injector hold down gag frame is fixed on the cylinder cap boss 7 of cylinder cap 8 with bolt on valve gap bridge 9 through the fixedly circular hole 203 on the dunnage 2; Two oil sprayer facades 601 parallel to each other of the clamping part opening 103 clamping oil sprayers 6 of briquetting 1; Tighten briquetting bolt 4; The arc groove 105 of briquetting 1 bottom surface compresses and supports bulb 3, and the clamping part lower arcuate surface 104 of briquetting 1 is pressed on the oil sprayer facade 601, oil sprayer 6 is pressed on the mounting hole of oil sprayer of cylinder cap 8.Clamping part opening 103 matches with two oil sprayer facades 601; Clamping part opening 103 bottoms of briquetting 1 are convex arc surface; Designing and calculating guarantees that the arc groove 105 of the other end bottom surface of briquetting 1 cooperates with support bulb 3 on the dunnage 2 when installing; Prop briquetting 1 one ends by supporting bulb 3, just can realize compressing and fixing oil sprayer 6 through the briquetting bolt 4 of tightening 1 middle part.The dunnage bottom surface boss 202 of the dunnage 2 bottom surfaces tapped hole 201 that extended guarantees that the pretightening force of enough briquetting bolts 4 meets the demands.
Because the fulcrum of briquetting 1 is on the support bulb 3 of dunnage 2; Only just obtained on valve gap bridge 9, can't be provided with originally the benefit of the strong point through dunnage simple in structure; Needn't consider on other positions, the strong point to be set; Removed the constraint that the strong point is arranged other component such as valve port 10, valve spring assembly 11, having increases the advantage that the cylinder cap component are arranged degrees of freedom, makes the projector to arrange valve, oil sprayer and camshaft etc. and the closely-related component of important indicators such as engine power performance, Economy according to desirable mode; To improve the overall performance of motor, the present invention is applicable to multiple diesel engine cylinder cover.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (4)
1. a diesel injector hold down gag comprises briquetting (1), dunnage (2), supports bulb (3), briquetting bolt (4) and spherical washer (5), and there is 1 bolt hole (101) that passes end face and bottom surface at the middle part of said briquetting (1); Bolt hole (101) is conical surface (102) at the edge of end face; One end of briquetting (1) is a clamping part, and clamping part has a clamping part opening (103), and the thickness between two oil sprayer facades (601) of its width and oil sprayer (6) is identical; The bottom surface that clamping part opening (103) is located is clamping part lower arcuate surface (104); It is characterized in that said briquetting (1) has 1 arc groove (105) on the other end bottom surface, there is a dunnage bottom surface boss (202) at middle part, said dunnage (2) bottom surface; Tapped hole (201) passes end face and dunnage bottom surface boss (202); On the center line of dunnage (2), hemispheric support bulb (3) is fixed on dunnage (2) end face, 4 fixedly circular hole (203) be distributed in the Si Jiaochu of dunnage (2); Dunnage (2) is fixed on the cylinder cap boss (7) on the cylinder cap (8) through fixing circular hole (203) level by bolt; Briquetting (1) places on the dunnage (2); The clamping part opening (103) of briquetting (1) cooperates with 2 oil sprayer facades (601) of oil sprayer (6); Clamping part lower arcuate surface (104) is pressed in oil sprayer and adds on the pressure surface (602); Arc groove (105) on briquetting (1) the other end bottom surface contacts with support bulb (3) on the dunnage (2), and the bolt hole (101) that briquetting bolt (4) passes briquetting (1) is threaded with the tapped hole (201) of dunnage (2), and spherical washer (5) pad is between the conical surface (102) of the nut of briquetting bolt (4) and bolt hole (101); Tighten briquetting bolt (4), briquetting (1) is that fulcrum is pressed on oil sprayer (6) on the mounting hole of oil sprayer of cylinder cap (8) by clamping part opening (103) end to support bulb (3).
2. diesel injector hold down gag according to claim 1 is characterized in that, said clamping part lower arcuate surface (104) is a convex arc surface.
3. diesel injector hold down gag according to claim 1 is characterized in that, said clamping part lower arcuate surface (104) is pressed in oil sprayer and adds pressure surface (602) and go up to line contacts, and Line of contact adds on the center line of pressure surface (602) at oil sprayer.
4. diesel injector hold down gag according to claim 1 is characterized in that, said support bulb (3) and dunnage (2) are structure as a whole or support bulb (3) and make back implantation dunnage (2) separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100076213A CN102562396A (en) | 2012-01-11 | 2012-01-11 | Diesel engine oil injector hold-down device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100076213A CN102562396A (en) | 2012-01-11 | 2012-01-11 | Diesel engine oil injector hold-down device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102562396A true CN102562396A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100076213A Pending CN102562396A (en) | 2012-01-11 | 2012-01-11 | Diesel engine oil injector hold-down device |
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| CN (1) | CN102562396A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047065A (en) * | 2012-12-28 | 2013-04-17 | 潍柴动力股份有限公司 | Pressing device for diesel injector |
| CN106523230A (en) * | 2016-11-17 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Auxiliary sealing structure for oil sprayer pressing block bolt |
| EP4060182A1 (en) | 2021-03-18 | 2022-09-21 | DAF Trucks N.V. | Bracket and method for clamping an injector onto a cylinder head |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11223169A (en) * | 1998-02-06 | 1999-08-17 | Kubota Corp | Diesel engine |
| US6769409B2 (en) * | 2002-10-11 | 2004-08-03 | Caterpillar Inc | Fuel injector supporting device |
| JP2005307775A (en) * | 2004-04-19 | 2005-11-04 | Mazda Motor Corp | Injector mounting structure for engine |
| JP2009215921A (en) * | 2008-03-07 | 2009-09-24 | Honda Motor Co Ltd | Fuel injection valve mounting structure for internal combustion engine |
| 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 |
-
2012
- 2012-01-11 CN CN2012100076213A patent/CN102562396A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11223169A (en) * | 1998-02-06 | 1999-08-17 | Kubota Corp | Diesel engine |
| US6769409B2 (en) * | 2002-10-11 | 2004-08-03 | Caterpillar Inc | Fuel injector supporting device |
| JP2005307775A (en) * | 2004-04-19 | 2005-11-04 | Mazda Motor Corp | Injector mounting structure for engine |
| JP2009215921A (en) * | 2008-03-07 | 2009-09-24 | Honda Motor Co Ltd | Fuel injection valve mounting structure for internal combustion engine |
| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047065A (en) * | 2012-12-28 | 2013-04-17 | 潍柴动力股份有限公司 | Pressing device for diesel injector |
| CN106523230A (en) * | 2016-11-17 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Auxiliary sealing structure for oil sprayer pressing block bolt |
| CN106523230B (en) * | 2016-11-17 | 2018-12-25 | 安徽江淮汽车集团股份有限公司 | A kind of auxiliary sealing structure of fuel injector briquetting bolt |
| EP4060182A1 (en) | 2021-03-18 | 2022-09-21 | DAF Trucks N.V. | Bracket and method for clamping an injector onto a cylinder head |
| NL2027770B1 (en) | 2021-03-18 | 2022-09-29 | Daf Trucks Nv | Bracket and method for clamping an injector onto a cylinder head |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |
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| WD01 | Invention patent application deemed withdrawn after publication |