CN209430326U - A kind of MPI fuel rail of high leakproofness - Google Patents
A kind of MPI fuel rail of high leakproofness Download PDFInfo
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- CN209430326U CN209430326U CN201821820062.7U CN201821820062U CN209430326U CN 209430326 U CN209430326 U CN 209430326U CN 201821820062 U CN201821820062 U CN 201821820062U CN 209430326 U CN209430326 U CN 209430326U
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- fuel
- injector cup
- fuel tube
- fuel rail
- inclined surface
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Abstract
The utility model discloses a kind of MPI fuel rail of high leakproofness, it include: fuel rail ontology and an at least fuel tube, at least one end of a fuel tube is connect with the peripheral wall of fuel rail ontology, and the other end of fuel tube is connected with injector cup；The first inclined surface, the first compression face, the second inclined surface and the second compression face are formed on the end periphery of the other end of fuel tube；Fuel tube is equipped with the first supported flange；The second pressing surface, third inclined surface, the first pressing surface and the 4th inclined surface are formed in the inner circumferential of injector cup, the first pressing surface crimps with the first compression face and seal cooperation, and the second pressing surface crimps with the second compression face and seals cooperation；Injector cup is equipped with the second supported flange, and the second supported flange is bolted to connection with the first supported flange.The utility model improves the leakproofness between fuel tube and injector cup, so as to prevent fuel from leaking.
Description
Technical field
The utility model relates to the technical field of engine more particularly to a kind of MPI fuel rails of high leakproofness.
Background technique
Fuel rail is widely used in the electronic fuel injection system of automobile engine, from the supervisor with fuel passage,
Through a plurality of branched pipe, fuel is supplied to each fuel injector.
In the prior art, the variation due to the supply pressure of high-pressure fluid or the vibration from engine side and temperature become
Change will lead to change in size etc., so that fuel rail leakproofness is poor, so as to cause fuel leakage, or even cause branched pipe and spray
Engaging portion between emitter cup is cracked, and fuel rail is caused not to be available.
Summary of the invention
Cause fuel to leak the existing above problem for existing fuel rail leakproofness is poor, one kind is now provided and is intended to
Leakproofness is preferable, extends the MPI fuel rail of the high leakproofness of the service life of fuel rail.
Specific technical solution is as follows:
A kind of MPI of high leakproofness (Multi Point Injection, multi-point injection) fuel rail, comprising: fuel rail
Road ontology and at least a fuel tube, one end of at least one fuel tube and the fuel rail ontology
Peripheral wall connection, the other end of the fuel tube are connected with injector cup；The end of the other end of the fuel tube
The periphery of the tapered setting of portion's inner circumferential, the other end of the fuel tube is equipped with the first bulge loop, the fuel tube
The other end end periphery on be formed with sequentially connected first inclined surface, the first compression face and the second inclined surface, the combustion
The periphery in material conveying tube road and first bulge loop have cooperatively formed the second compression face, first compression face and described second by
Pressure surface is inclined to set；The periphery of the fuel tube is equipped with the first supported flange, first supported flange and institute
State the limit cooperation of the first bulge loop；The injector cup is convex equipped with second close to the end periphery of one end of the fuel tube
Ring, end inner circumferential of the injector cup close to one end of the fuel tube are formed with the second pressing surface, the injection
Sequentially connected third inclined surface, the first pressing surface and the 4th inclined surface, first pressing surface are formed in the inner circumferential of device cup
With the arc-shaped setting of second pressing surface, the third inclined surface is abutted with first inclined surface, the 4th inclination
Face is abutted with second inclined surface, and first pressing surface crimps with first compression face and seal cooperation, and described second
Pressing surface crimps with second compression face and seals cooperation；The periphery of the injector cup is equipped with the second supported flange, described
Second supported flange and second bulge loop limit cooperate, and second supported flange and first supported flange pass through bolt
It is fixedly connected.
The MPI fuel rail of above-mentioned high leakproofness, wherein the inner circumferential of the injector cup is equipped with third convex block, described
The inner circumferential of injector cup cooperatively forms the third inclined surface with the third convex block, first pressing surface and the described 4th is inclined
Inclined-plane.
The MPI fuel rail of above-mentioned high leakproofness, wherein second convex block, third convex block with the injector
Cup is an integral structure.
The MPI fuel rail of above-mentioned high leakproofness, wherein first convex block is integrated with the fuel tube
Formula structure.
The MPI fuel rail of above-mentioned high leakproofness, wherein first pressing surface and second pressing surface are in ball
Planar setting.
The MPI fuel rail of above-mentioned high leakproofness, wherein first supported flange is equipped with several first through hole,
Second supported flange is equipped with several second through-holes, is respectively equipped with the first internal screw thread in several first through hole, several
The second internal screw thread is respectively equipped in second through-hole, several first through hole are corresponding with several second through-holes respectively to be set
It sets, several bolts are connected with corresponding first internal screw thread and second internal screw thread respectively.
The MPI fuel rail of above-mentioned high leakproofness, wherein the end inner circumferential of the other end of the fuel tube
Radius is less than the internal diameter of one end of the fuel tube.
The MPI fuel rail of above-mentioned high leakproofness, wherein the periphery of the fuel tube and the injector cup
Inner circumferential interference fit.
The good effect that above-mentioned technical proposal has compared with prior art is:
The first pressing surface crimps with the first compression face and seals cooperation in the utility model, and the second pressing surface is pressurized with second
Face pressure connects and seals cooperation, then cooperatively forms further sealing, increase by the first supported flange and the second supported flange
Bonding strength, can prevent caused by the variation of the supply pressure of high-pressure fluid or the vibration and temperature change from engine
The change in size etc. of fuel tube prevents the engaging portion between fuel tube and injector cup from occurring caused by cracking
Fuel rail is not available, and improves the leakproofness between fuel tube and injector cup, so as to prevent fuel from letting out
Leakage, extends the service life of fuel rail.
Detailed description of the invention
Fig. 1 is a kind of overall structure cross-sectional view of the MPI fuel rail of high leakproofness of the utility model；
Fig. 2 is the cross-sectional view of fuel tube in a kind of MPI fuel rail of high leakproofness of the utility model；
Fig. 3 is the cross-sectional view of injector cup in a kind of MPI fuel rail of high leakproofness of the utility model；
In attached drawing: 1, fuel rail ontology；2, fuel tube；3, injector cup；41, the first bulge loop；42, second is convex
Ring；43, third bulge loop；51, the first inclined surface；52, the second inclined surface；53, third inclined surface；54, the 4th inclined surface；61,
One compression face；62, the second compression face；71, the first pressing surface；72, the second pressing surface；81, the first supported flange；82, the second pressure
Tight flange；9, bolt.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
Fig. 1 is a kind of overall structure cross-sectional view of the MPI fuel rail of high leakproofness of the utility model, and Fig. 2 is that this is practical
The cross-sectional view of fuel tube in a kind of MPI fuel rail of novel high leakproofness, Fig. 3 are a kind of high sealing of the utility model
The cross-sectional view of injector cup in the MPI fuel rail of property.As shown in Figure 1 to Figure 3, a kind of high sealing of preferred embodiment is shown
The MPI fuel rail of property, comprising: fuel rail ontology 1 and at least a fuel tube 2, at least a fuel tube 2
One end connect with the peripheral wall of fuel rail ontology 1, the other end of fuel tube 2 is connected with injector cup 3.
Further, as a kind of preferred embodiment, the end inner circumferential of the other end of fuel tube 2 is tapered to be set
It sets, the periphery of the other end of fuel tube 2 is equipped with the first bulge loop 41, the end periphery of the other end of fuel tube 2
On be formed with sequentially connected first inclined surface 51, the first compression face 61 and the second inclined surface 52, the periphery of fuel tube 2
The second compression face 62 is cooperatively formed with the first bulge loop, the first compression face 61 and the second compression face 62 are inclined to set.It is preferred that
Ground, the first inclined surface 51 and the second inclined surface 52 have guiding role.
Further, as a kind of preferred embodiment, the periphery of fuel tube 2 is equipped with the first supported flange 81, the
One supported flange 81 and the limit of the first bulge loop 41 cooperate.
Further, as a kind of preferred embodiment, injector cup 3 is outside the end of one end of fuel tube 2
Week is equipped with the second bulge loop 42, and end inner circumferential of the injector cup 3 close to one end of fuel tube 2 is formed with the second pressing surface
72, sequentially connected third inclined surface 53, the first pressing surface 71 and the 4th inclined surface 54 are formed in the inner circumferential of injector cup 3,
First pressing surface 71 and the arc-shaped setting of the second pressing surface 72, third inclined surface 53 are abutted with the first inclined surface 51, and the 4th inclines
Inclined-plane 54 is abutted with the second inclined surface 52, and the first pressing surface 71 and the first compression face pressure 61 connect and seal cooperation, the second pressing surface
72 crimp with the second compression face 62 and seal cooperation.
Further, as a kind of preferred embodiment, the periphery of injector cup 3 is equipped with the second supported flange 82, the second pressure
Tight flange 82 and the limit of the second bulge loop 42 cooperate, and the second supported flange 82 is fixedly connected with the first supported flange 81 by bolt 9.
Further, as a kind of preferred embodiment, the inner circumferential of injector cup 3 is equipped with third convex block 43, injector cup 3
Inner circumferential and third convex block 43 cooperatively form third inclined surface 53, the first pressing surface 71 and the 4th inclined surface 54.
The above is only the utility model preferred embodiments, are not intended to limit the embodiments of the present invention and protection
Range.
The utility model also has on the basis of the above is implemented as follows mode:
In the further embodiment of the utility model, continuing with referring to shown in Fig. 1 to Fig. 3, the second convex block 42, third convex block
43 are an integral structure with injector cup 3.
In the further embodiment of the utility model, the first convex block 41 is an integral structure with fuel tube 2.
In the further embodiment of the utility model, the first pressing surface 71 and the spherical shape setting of the second pressing surface 72.
In the further embodiment of the utility model, the first supported flange 81 is equipped with several first through hole, and second compresses
Flange 82 is equipped with several second through-holes, and the first internal screw thread, difference in several second through-holes are respectively equipped in several first through hole
Equipped with the second internal screw thread, several first through hole are correspondingly arranged with several second through-holes respectively, if bolt stem 9 respectively with it is corresponding
First internal screw thread and the connection of the second internal screw thread.
In the further embodiment of the utility model, the radius of the end inner circumferential of the other end of fuel tube 2 is less than
The internal diameter of one end of fuel tube 2.
In the further embodiment of the utility model, the periphery of fuel tube 2 is matched with the inner circumferential interference of injector cup 3
It closes.
The first pressing surface 71 crimps with the first compression face 61 and seals cooperation, the second pressing surface 72 and in the utility model
The crimping of two compression faces 62 and sealing cooperation, then it is further by cooperatively forming for the first supported flange 81 and the second supported flange 82
Sealing, increase bonding strength, the variation of the supply pressure of high-pressure fluid or vibration and temperature from engine can be prevented
Degree changes the change in size etc. of caused fuel tube, prevents the engaging portion between fuel tube 2 and injector cup 3
There is fuel rail caused by cracking not being available, improves the leakproofness between fuel tube 2 and injector cup 3, from
And can prevent fuel from leaking, extend the service life of fuel rail.
The foregoing is merely the utility model preferred embodiment, be not intended to limit the embodiments of the present invention and
Protection scope should can appreciate that all in the utility model specification and diagram to those skilled in the art
Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in
In enclosing.
Claims (8)
1. a kind of MPI fuel rail of high leakproofness characterized by comprising fuel rail ontology and at least a fuel is defeated
Pipeline is sent, one end of at least one fuel tube is connect with the peripheral wall of the fuel rail ontology, the fuel conveying
The other end of pipeline is connected with injector cup；
The tapered setting of end inner circumferential of the other end of the fuel tube, the other end of the fuel tube it is outer
It is equipped with the first bulge loop week, sequentially connected first inclination is formed on the end periphery of the other end of the fuel tube
Face, the first compression face and the second inclined surface, the periphery of the fuel tube and first bulge loop have cooperatively formed second
Compression face, first compression face and second compression face are inclined to set；
The periphery of the fuel tube is equipped with the first supported flange, and first supported flange and first bulge loop limit
Cooperation；
The injector cup is equipped with the second bulge loop, the injector cup close to the end periphery of one end of the fuel tube
End inner circumferential close to one end of the fuel tube is formed with the second pressing surface, is formed in the inner circumferential of the injector cup
There are sequentially connected third inclined surface, the first pressing surface and the 4th inclined surface, first pressing surface and second pressing surface
Arc-shaped setting, the third inclined surface are abutted with first inclined surface, the 4th inclined surface and second inclination
Face abuts, and first pressing surface crimps with first compression face and seal cooperation, second pressing surface and described second
Compression face crimping and sealing cooperation；
The periphery of the injector cup is equipped with the second supported flange, and second supported flange is matched with second bulge loop limit
It closes, second supported flange is bolted to connection with first supported flange.
2. the MPI fuel rail of high leakproofness according to claim 1, which is characterized in that the inner circumferential of the injector cup is set
There is a third convex block, the inner circumferential of the injector cup and the third convex block cooperatively form the third inclined surface, described first push away
Pressure surface and the 4th inclined surface.
3. the MPI fuel rail of high leakproofness according to claim 2, which is characterized in that second bulge loop, third convex block
It is an integral structure with the injector cup.
4. the MPI fuel rail of high leakproofness according to claim 1, which is characterized in that first bulge loop and the combustion
Material conveying tube road is an integral structure.
5. the MPI fuel rail of high leakproofness according to claim 1 or claim 2, which is characterized in that first pressing surface and institute
State the spherical shape setting of the second pressing surface.
6. the MPI fuel rail of high leakproofness according to claim 1, which is characterized in that set on first supported flange
There are several first through hole, second supported flange is equipped with several second through-holes, is respectively equipped in several first through hole
First internal screw thread, is respectively equipped with the second internal screw thread in several second through-holes, several first through hole respectively with several institutes
It states the second through-hole to be correspondingly arranged, several bolts connect with corresponding first internal screw thread and second internal screw thread respectively
It connects.
7. the MPI fuel rail of high leakproofness according to claim 1, which is characterized in that the fuel tube it is another
The radius of the end inner circumferential of one end is less than the internal diameter of one end of the fuel tube.
8. the MPI fuel rail of high leakproofness according to claim 1, which is characterized in that outside the fuel tube
All inner circumferentials with the injector cup are interference fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821820062.7U CN209430326U (en) | 2018-11-06 | 2018-11-06 | A kind of MPI fuel rail of high leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821820062.7U CN209430326U (en) | 2018-11-06 | 2018-11-06 | A kind of MPI fuel rail of high leakproofness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209430326U true CN209430326U (en) | 2019-09-24 |
Family
ID=67967174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821820062.7U Active CN209430326U (en) | 2018-11-06 | 2018-11-06 | A kind of MPI fuel rail of high leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209430326U (en) |
-
2018
- 2018-11-06 CN CN201821820062.7U patent/CN209430326U/en active Active
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