CN201273242Y - Fastening structure of oil ejector - Google Patents
Fastening structure of oil ejector Download PDFInfo
- Publication number
- CN201273242Y CN201273242Y CNU2008201044740U CN200820104474U CN201273242Y CN 201273242 Y CN201273242 Y CN 201273242Y CN U2008201044740 U CNU2008201044740 U CN U2008201044740U CN 200820104474 U CN200820104474 U CN 200820104474U CN 201273242 Y CN201273242 Y CN 201273242Y
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- CN
- China
- Prior art keywords
- oil sprayer
- fuel injector
- cover
- tightening structure
- cylinder cover
- 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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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a fastening structure of a fuel injector, which comprises a fuel injector sleeve arranged on a cylinder cover and a camshaft frame fixed on the cylinder cover, wherein the bottom of the fuel injector sleeve is fixed on the cylinder cover, and the top portion of the fuel injection sleeve is matched with the camshaft frame, a fuel injector is arranged in the fuel injector sleeve, and is connected with the camshaft frame through a fastening turnbuckle. The fastening structure makes structure simple and reliable and has excellent assembly technology, aiming to the disadvantages of complicated connecting structure of an fuel injector and the cylinder cover, high difficulty of processing technology and high cost in the prior art. As the whole fuel injector mounting hole is unnecessary to cast on the cylinder cover, the mode of the cylinder cover can be simplified, and the processing technology of the cylinder cover can be optimized, thereby reducing production cost, and being beneficial for maintenance. The fastening structure can be widely applied in engines which adopt four-valve double-overhead camshaft structures.
Description
Technical field
The utility model relates to a kind of engine structure, relates in particular to a kind of fuel injector tightening structure.
Background technique
In the prior art, adopt the diesel engine of four valve crest places the cam axle construction, need to arrange component such as intake valve, exhaust valve, air valve seat ring, valve spring, camshaft and oil sprayer on the cylinder head, structure is very compact.Wherein, oil sprayer generally is arranged in the neutral position of each cylinder, and the means of fixation of oil sprayer is generally the pressing plate compression type.For example, Chinese patent application number is 200510094175.4, the model utility name is called in the patent documentation of " fastening clamper for fuel-injection device of diesel engine " and discloses a kind of fastening clamper for fuel-injection device of diesel engine, comprises the oil sprayer that inserts in the cylinder cap, oil sprayer clip, the oil sprayer clip is anchored on clamping bolt on the cylinder cap; There are symmetrically arranged 2 to compress breach on the oil sprayer; Compress breach and the oil sprayer clip of oil sprayer compress end and adopt sphere to compress to connect, and oil sprayer clip profile is the Y font, and the cross section is arc.
Mounting hole of oil sprayer is typically designed to directly and is formed by the cylinder head casting, and the air cylinder head structure technology of this mode, casting mould are all very complicated, and the reject rate of casting is higher relatively, and the process for machining difficulty is also very high.Simultaneously, oil sprayer clip assembly technology relative complex not only independently, component production, management costs are also high, will directly cause the manufacture cost of complete machine higher relatively like this.
The model utility content
The purpose of this utility model is, at oil sprayer in the prior art and cylinder head linkage structure complexity, processing technology difficulty height and defect of high cost, provide a kind of simple in structure, processing technology is simple, and lower-cost fuel injector tightening structure.
Fuel injector tightening structure of the present utility model comprises the oil sprayer cover of being located on the cylinder head and is fixed on camshaft frame on the described cylinder head that described oil sprayer cover bottom is fixed on the described cylinder head, and described oil sprayer cover top cooperates with described camshaft frame; Described oil sprayer places in the described oil sprayer cover, is connected with described camshaft frame by fastening swivel nut.
Owing to adopt above-mentioned technological scheme, the utlity model has following beneficial effect:
1, whole fuel injector tightening structure is simple and reliable, the assembling good manufacturability;
2, do not need on cylinder head, to cast out whole mounting hole of oil sprayer, can simplify the cylinder head mould, optimize the processing technology of cylinder head, thereby reduce production costs;
3, be convenient to maintenance overhaul.
Description of drawings
Fig. 1 is the utility model fuel injector tightening structure assembly schematic representation;
Fig. 2 is the sectional view of oil sprayer cover of the present utility model;
Fig. 3 is the generalized section of the utility model fuel injector tightening structure;
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-cylinder head; The 2-camshaft frame; The fastening swivel nut of 3-; The 4-oil sprayer; The 5-circlip;
The 6-O RunddichtringO; 7-oil sprayer cover; 8-oil sprayer cover mounting hole.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1 to Figure 3, the utility model embodiment's fuel injector tightening structure comprises oil sprayer cover of being located on the cylinder head 17 and the camshaft frame 2 that is fixed on the cylinder head 1.
Oil sprayer overlaps 7 bottoms and is fixed on the cylinder head 1, is used for blanket gas cylinder cap 1 internal lubrication oil.Cylinder head 1 is provided with oil sprayer cover mounting hole 8, and oil sprayer overlaps 7 bottoms and oil sprayer cover mounting hole 8 interference fit.Oil sprayer overlaps 7 tops and camshaft frame 2 Spielpassung.
Camshaft frame 2, oil sprayer cover 7 and cylinder head 1 form step-like mounting hole of oil sprayer, and oil sprayer 4 places in the mounting hole of oil sprayer, and being threaded with camshaft frame 2 by fastening swivel nut 3 fixes oil sprayer 4.Also be provided with circlip 5 with fastening swivel nut 3 position contacting on the oil sprayer 4, come spacing fastening swivel nut 3, when fastening swivel nut 3 is tightened, compress oil sprayer 4 in camshaft frame 2 tapped holes, thereby realize the fastening of oil sprayer 4.
In the present embodiment, oil sprayer cover 7 is the thin-walled steel bushing, to save the mid-oil sprayer arrangement space of valve mechanism component on every side.Camshaft frame 2 is a ladder-shaped frame, has enough rigidity and intensity, is directly installed on the cylinder head 1.Fastening swivel nut 3 can directly be enclosed within on the oil sprayer 4, or circlip 5 also can be installed together by direct injection device 4, or fastening swivel nut 3 and circlip 5 integrate with oil sprayer 4 together.
The utility model fuel injector tightening structure has the simplification air cylinder head structure, reduces cylinder head casting, difficulty of processing, optimizes assembly technology, thereby reduces the complete machine manufacture cost and other advantages, can be widely used in the motor of four valve crest places the cam axle construction.
It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technological scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technological scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.
Claims (9)
1, a kind of fuel injector tightening structure, it is characterized in that, comprise the oil sprayer cover of being located on the cylinder head and be fixed on camshaft frame on the described cylinder head, the bottom of described oil sprayer cover is fixed on the described cylinder head, and the top of described oil sprayer cover cooperates with described camshaft frame; Described oil sprayer places in the described oil sprayer cover, and is connected with described camshaft frame by fastening swivel nut.
2, fuel injector tightening structure according to claim 1 is characterized in that, described oil sprayer is arranged with O type seal groove, and described oil sprayer cover is sealed and matched by O RunddichtringO and described camshaft frame.
3, fuel injector tightening structure according to claim 1 is characterized in that, described cylinder head is provided with oil sprayer cover mounting hole, described oil sprayer cover bottom and described oil sprayer cover mounting hole interference fit.
4, fuel injector tightening structure according to claim 1 is characterized in that, described oil sprayer cover is a Spielpassung with described camshaft frame.
5, fuel injector tightening structure according to claim 1 is characterized in that, described camshaft frame is a ladder-shaped frame.
6, according to any described fuel injector tightening structure in the claim 1 to 5, it is characterized in that, be provided with circlip with described fastening screw cover contacting point on the described oil sprayer.
7, fuel injector tightening structure according to claim 1 is characterized in that, described oil sprayer cover is the thin-walled steel bushing.
8, fuel injector tightening structure according to claim 3 is characterized in that, described camshaft frame, described oil sprayer cover and described cylinder head form step-like mounting hole of oil sprayer.
9, fuel injector tightening structure according to claim 6 is characterized in that, described fastening swivel nut and/or described circlip and described oil sprayer are an overall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201044740U CN201273242Y (en) | 2008-08-12 | 2008-08-12 | Fastening structure of oil ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201044740U CN201273242Y (en) | 2008-08-12 | 2008-08-12 | Fastening structure of oil ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273242Y true CN201273242Y (en) | 2009-07-15 |
Family
ID=40883590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201044740U Expired - Fee Related CN201273242Y (en) | 2008-08-12 | 2008-08-12 | Fastening structure of oil ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273242Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410630A (en) * | 2013-07-05 | 2013-11-27 | 广西玉柴机器股份有限公司 | Diesel engine cylinder head cover |
| CN105840378A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | Oil inlet sealing structure of diesel engine |
| CN107044371A (en) * | 2017-03-24 | 2017-08-15 | 中国北方发动机研究所(天津) | A kind of fuel injector sealing structure and installation method for cylinder head |
| CN108049981A (en) * | 2017-11-02 | 2018-05-18 | 宝沃汽车（中国）有限公司 | Cylinder head and with its engine and vehicle |
-
2008
- 2008-08-12 CN CNU2008201044740U patent/CN201273242Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410630A (en) * | 2013-07-05 | 2013-11-27 | 广西玉柴机器股份有限公司 | Diesel engine cylinder head cover |
| CN103410630B (en) * | 2013-07-05 | 2015-10-28 | 广西玉柴机器股份有限公司 | Diesel engine cylinder head cover |
| CN105840378A (en) * | 2016-05-18 | 2016-08-10 | 中国北方发动机研究所(天津) | Oil inlet sealing structure of diesel engine |
| CN107044371A (en) * | 2017-03-24 | 2017-08-15 | 中国北方发动机研究所(天津) | A kind of fuel injector sealing structure and installation method for cylinder head |
| CN108049981A (en) * | 2017-11-02 | 2018-05-18 | 宝沃汽车（中国）有限公司 | Cylinder head and with its engine and vehicle |
| CN108049981B (en) * | 2017-11-02 | 2020-07-24 | 北汽福田汽车股份有限公司 | Cylinder head and have its engine and vehicle |
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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: 20090715 Termination date: 20130812 |