CN207261143U - A kind of common rail diesel engine high pressure fuel line connection - Google Patents
A kind of common rail diesel engine high pressure fuel line connection Download PDFInfo
- Publication number
- CN207261143U CN207261143U CN201721097191.3U CN201721097191U CN207261143U CN 207261143 U CN207261143 U CN 207261143U CN 201721097191 U CN201721097191 U CN 201721097191U CN 207261143 U CN207261143 U CN 207261143U
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- China
- Prior art keywords
- connecting rod
- high pressure
- oil pipe
- diesel engine
- common rail
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Abstract
The utility model discloses a kind of common rail diesel engine high pressure fuel line connection, including connecting bend, high-pressure oil pipe, compact heap and high pressure connecting rod, high-pressure oil pipe is set in the connecting bend vertical direction top connecting hole, high pressure connecting rod is set in the horizontal direction front portion connecting hole of connecting bend, compact heap is arranged on the rear portion of connecting bend, and compact heap is arranged in cylinder head by housing pin；Common rail diesel engine high pressure fuel line connection described in the utility model employs rational structure, solves the connection problem of common rail diesel engine electromagnetic fuel injector high pressure fuel side oil inlet, improves charge oil pressure, the performance of diesel engine is further got a promotion；High pressure pipe assembly installation is reliable, avoids high pressure fuel and is not revealed from common rail pipe to fuel injector, realizes convenient installation and the effect of excellent sealing of common rail diesel engine fuel system with high injection pressure.
Description
Technical field
The utility model belongs to Design Technology for Diesels technical field, relates generally to a kind of common rail diesel engine high-pressure oil pipe connection dress
Put.
Background technology
High Pressure Common-Rail Fuel Inject is to separate the generation of fuel pressure with fuel injection processes, by
In the opening and closing for the high-speed electromagnetic valve being integrated on each fuel injector, timing, quantitative control fuel injector are sprayed to burning
The oil mass of room.System has high injection pressure, and simultaneously Precise Control of Oil amount can be adjusted according to duty requirements, realizes preferable oil spout
Rule, improves fuel atomizing degree, ensures that diesel engine reaches good fuel atomization effect and best combustion ratio, can be effective
Improvement diesel emission characteristic, reduce PM, reduce NOx discharge capacity.In the prior art, diesel engine electromagnetic fuel injector oil inlet
It is connected directly with common rail pipe oil outlet using high-pressure oil pipe, high-pressure oil pipe connection and sealing mode is using in oil pipe both ends of the surface
Plain washer and cap nut, oil pipe end processing conical seal (contact) face, matched fuel injector oil inlet and common rail are loaded onto before upset
Pipe oil outlet threading and internal necking bellmouth, compress by cap nut and install.Above-mentioned connection method, for common rail bavin
The connection that oil machine side feeding type electromagnetic fuel injector can not have been realized, and with common rail diesel engine fuel system charge oil pressure
It is continuously improved, the strength of materials and connection method to high-pressure oil pipe propose the requirement of higher, for high-strength high-voltage oil pipe, adopt
With upset method, strong forging be easy to cause tubing bending and cracks, and is influenced by factors such as high-pressure oil pipe vibrations,
It is easy to cause leakage.
The content of the invention
The purpose of this utility model is to propose a kind of common rail diesel engine high pressure fuel line connection, realization and electromagnetic fuel injector
The installation and sealing of side feeding type, by the use of the utility model, can effectively solve the oil inlet of electromagnetic fuel injector side
Leakage in connection, makes the connection between high-pressure oil pipe and electromagnetic fuel injector very convenient reliable, and improves diesel engine
Work efficiency, improve overall performance.
The purpose of this utility model can be adopted the following technical scheme that to realize：
A kind of common rail diesel engine high pressure fuel line connection, including connecting bend, high-pressure oil pipe, compact heap are connected with high pressure
Bar, the connecting bend vertical direction top connecting hole is interior to set high-pressure oil pipe, the anterior connection of horizontal direction of connecting bend
High pressure connecting rod is set in hole, and compact heap is arranged on the rear portion of connecting bend, and compact heap is arranged on cylinder head by housing pin
On；The connecting bend is square bend configuration, and top is oil pipe connecting hole, and front portion is connecting rod bores, inside connecting bend
Connect, be provided with connecting rod internal thread hole in connecting rod bores inner circle, connecting rod bellmouth is provided with bottom surface；In oil pipe connecting hole
Oil pipe internal thread hole is provided with circle, oil pipe bellmouth is provided with bottom surface；The high pressure connecting rod is cylindrical casing, high pressure
Connecting rod one end is arranged in the connecting rod bores of connecting bend front portion, and end face is provided with connecting rod conical head, the cylindrical upper setting in termination
There is connecting rod external screw thread, be connected with the connecting rod bellmouth in connecting bend connecting rod bores and connecting rod internal thread hole；Separately
One end end face is provided with oil outlet conical head and is connected with electromagnetic fuel injector oil inlet dimensional fits；High pressure connecting rod it is centrally disposed
There is oil-through hole, the cylindrical centre position of high pressure connecting rod is provided with two parallel connecting rod platforms.
The high-pressure oil pipe is cylindrical casing, and high-pressure oil pipe one end is arranged in the oil pipe connecting hole of connecting bend top,
Oil pipe conical head is provided with end face, is provided with oil tube external thread, oil tube external thread and oil pipe conical head and company on termination is cylindrical
Connect the oil pipe bellmouth in elbow oil pipe connecting hole and oil pipe internal thread hole is connected, the other end and the common rail of high-pressure oil pipe fill
Connection is put, high-pressure oil pipe is provided centrally with through hole.
The connecting bend rear portion both sides are provided with two symmetrical grooves.
The compact heap is L-type pressure plate structure, and the seal face of compact heap upper and lower ends is arc, and centre is provided with installation
Hole, the upper end seal face of compact heap are pressed in connecting bend rear groove, and lower end seal face is pressed in cylinder head, compact heap
Spherical washer is provided with above mounting hole.
The housing pin is arranged on spherical washer, and housing pin passes through compact heap mounting hole and consolidating in cylinder head
Determine screw hole connection.
O-ring groove is provided with the connecting rod bores of the connecting bend is cylindrical, O-ring is provided with O-ring groove.
The two connecting hole centerlines of connecting bend are into 85 °~90 °.
Common rail diesel engine high pressure fuel line connection described in the utility model employs rational structure, solves common rail
The connection problem of diesel engine electromagnetic fuel injector high pressure fuel side oil inlet, improves charge oil pressure, makes the performance of diesel engine into one
Step gets a promotion；High pressure pipe assembly installation is reliable, avoids high pressure fuel and is not revealed from common rail pipe to fuel injector, realizes common rail
The convenient installation of diesel engine high-pressure fuel injection system and the effect of excellent sealing.
Brief description of the drawings
Fig. 1, the structure diagram for the utility model.
Fig. 3, the structure diagram for component 5 in Fig. 1.
Fig. 2, the structure diagram for component 2 in Fig. 1.
In figure：1st, cylinder head；2nd, compact heap；3rd, spherical washer；4th, housing pin；5th, connecting bend；6th, connecting rod is bored
Shape hole, 7, connecting rod conical head, 8, oil pipe bellmouth；9th, oil pipe conical head, 10, oil pipe internal thread hole, 11, oil tube external thread,
12nd, high-pressure oil pipe, 13, connecting rod internal thread hole, 14, O-ring, 15, connecting rod external screw thread, 16, connecting rod platform, 17, high pressure
Connecting rod, 18, oil outlet conical head, 19 electromagnetic fuel injectors, 20, groove, 21, compact heap mounting hole, 22, lower seal face, 23, on
Seal face.
Embodiment
The utility model is further described with reference to the accompanying drawings and detailed description：
Explanation the utility model that can be detailed by the following examples, open the purpose of this utility model are intended to protect
All technological improvements in the scope of the utility model.
A kind of common rail diesel engine high pressure fuel line connection as shown in attached drawing 1, Fig. 2, Fig. 3, including connecting bend 5, height
Pressuring oil pipe 12, compact heap 2 and high pressure connecting rod 17, the connecting bend 5 are quadrature tube elbow structures, and top connects for oil pipe
Hole, front portion are connecting rod bores, and the inside of connecting bend 5 connects, and connecting rod internal thread hole 13, bottom surface are provided with connecting rod bores inner circle
On be provided with connecting rod bellmouth 6；Oil pipe internal thread hole 10 is provided with oil pipe connecting hole inner circle, oil pipe cone is provided with bottom surface
Shape hole 8；Connecting bend rear portion both sides are provided with two symmetrical grooves 20, are provided with O on the connecting rod bores of connecting bend 5 is cylindrical
Type ring recess, is provided with O-ring 14 in O-ring groove, 5 liang of connecting hole centerlines of connecting bend are into 85 °~90 °；The height
Pressure connecting rod 17 is arranged in the horizontal direction front portion connecting hole of connecting bend 5, and high pressure connecting rod 17 is cylindrical casing, and high pressure connects
17 one end of extension bar is arranged in the anterior connecting rod bores of connecting bend 5, and end face is provided with connecting rod conical head 7, is set on termination is cylindrical
Connecting rod external screw thread 15 is equipped with, is coordinated with the connecting rod bellmouth 6 in 5 connecting rod bores of connecting bend and connecting rod internal thread hole 13
Connection, the sealing effect that the connection mode of taper hole face has had, the other end face are provided with oil outlet conical head 18 and electromagnetism spray
Oily device oil inlet dimensional fits connection；High pressure connecting rod 17 is provided centrally with oil-through hole, 16 cylindrical interposition of high pressure connecting rod
Install and be equipped with two parallel connecting rod platforms 16, connecting rod platform 17 conveniently screws up with a wrench on connecting bend 5.Described
High-pressure oil pipe 12 is vertically arranged in 5 top connecting hole of connecting bend, and high-pressure oil pipe 12 is cylindrical casing, and 12 one end of high-pressure oil pipe is set
Put in 5 top oil pipe connecting hole of connecting bend, oil pipe conical head 9 is provided with end face, be provided with outside oil pipe on termination is cylindrical
Screw thread 11, oil tube external thread 11 and oil pipe conical head 9 and spiral shell in the oil pipe bellmouth 8 and oil pipe in connecting bend oil pipe connecting hole
Pit 10 is connected, the sealing effect played by the connection of taper hole face, and the other end and the common rail of high-pressure oil pipe 12 fill
Connection is put, high-pressure oil pipe is provided centrally with through hole；The compact heap 2 is arranged on the rear portion of connecting bend 5, passes through housing pin
4 are arranged in cylinder head 1, and compact heap 2 is L-type pressure plate structure, and 2 upper and lower ends of compact heap are provided with arc seal face, arc pressure
Tight face can preferably contact compression with compacted position, and compact heap mounting hole 21,2 upper end of compact heap are provided among compact heap 2
Upper seal face 23 be pressed in the groove 20 at connecting bend rear portion, seal face 22 is pressed in cylinder head 1 under lower end, compact heap
Mounting hole 21 is provided with spherical washer 3 above, and housing pin 4 is arranged on spherical washer 3, and housing pin 4 is pacified by compact heap
Dress hole 21 is connected with the fixed screw holes in cylinder head 1, and spherical washer 3 has good anti-loosing effect to housing pin 4.
When mounted, high pressure connecting rod 17 is connected in the connecting rod bores of connecting bend 5 first, passes through screw thread and the conical surface
It is common coordinate prevent leakage, high-pressure oil pipe 17 is connected in the oil pipe connecting hole of connecting bend afterwards, passes through screw thread and cone
The common of face coordinates prevent leakage, is fixed and clamped block 2 using housing pin 4, compact heap 2 is compressed connecting bend 5 and make high pressure
Oil outlet conical head 18 in connecting rod 17 is closely connected with 19 oil inlet of electromagnetic fuel injector, so as to complete whole installation process.
The non-detailed portion of the utility model is the prior art.
Claims (7)
1. a kind of common rail diesel engine high pressure fuel line connection, it is characterized in that：Including connecting bend, high-pressure oil pipe, compact heap and
High pressure connecting rod, the connecting bend vertical direction top connecting hole is interior to set high-pressure oil pipe, the horizontal direction of connecting bend
High pressure connecting rod is set in anterior connecting hole, and compact heap is arranged on the rear portion of connecting bend, and compact heap is set by housing pin
In cylinder head；The connecting bend is square bend configuration, and top is oil pipe connecting hole, and front portion is connecting rod bores, connection
Connected inside elbow, be provided with connecting rod internal thread hole in connecting rod bores inner circle, connecting rod bellmouth is provided with bottom surface；Oil pipe
Oil pipe internal thread hole is provided with connecting hole inner circle, oil pipe bellmouth is provided with bottom surface；The high pressure connecting rod is cylinder
Casing, high pressure connecting rod one end are arranged in the connecting rod bores of connecting bend front portion, and end face is provided with connecting rod conical head, outside termination
Connecting rod external screw thread is provided with circle, is coordinated with the connecting rod bellmouth in connecting bend connecting rod bores and connecting rod internal thread hole
Connection；The other end face is provided with oil outlet conical head and is connected with electromagnetic fuel injector oil inlet dimensional fits；High pressure connecting rod
Oil-through hole is provided centrally with, the cylindrical centre position of high pressure connecting rod is provided with two parallel connecting rod platforms.
2. a kind of common rail diesel engine high pressure fuel line connection according to claim 1, it is characterized in that：The high pressure oil
Manage and be arranged on for cylindrical casing, high-pressure oil pipe one end in the oil pipe connecting hole of connecting bend top, oil pipe taper is provided with end face
Head, be provided with termination is cylindrical oil tube external thread, oil tube external thread and oil pipe conical head with connecting bend oil pipe connecting hole
Oil pipe bellmouth and oil pipe internal thread hole are connected, and the other end of high-pressure oil pipe is connected with common-rail system, high-pressure oil pipe center
It is provided with through hole.
3. a kind of common rail diesel engine high pressure fuel line connection according to claim 1, it is characterized in that：Connecting bend rear portion
Both sides are provided with two symmetrical grooves.
4. a kind of common rail diesel engine high pressure fuel line connection according to claim 1 or 3, it is characterized in that：The pressure
Tight block is L-type pressure plate structure, and the seal face of compact heap upper and lower ends is arc, and centre is provided with mounting hole, the upper end of compact heap
Seal face is pressed in connecting bend rear groove, and lower end seal face is pressed in cylinder head, is set above compact heap mounting hole
There is spherical washer.
5. a kind of common rail diesel engine high pressure fuel line connection according to claim 1, it is characterized in that：The compression spiral shell
Silk is arranged on spherical washer, and housing pin is connected by compact heap mounting hole with the fixed screw holes in cylinder head.
6. a kind of common rail diesel engine high pressure fuel line connection according to claim 1, it is characterized in that：The connecting bending
Head connecting rod bores it is cylindrical on be provided with O-ring groove, be provided with O-ring in O-ring groove.
7. a kind of common rail diesel engine high pressure fuel line connection according to claim 1, it is characterized in that：The connecting bending
First two connecting holes centerlines are into 85 °~90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721097191.3U CN207261143U (en) | 2017-08-30 | 2017-08-30 | A kind of common rail diesel engine high pressure fuel line connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721097191.3U CN207261143U (en) | 2017-08-30 | 2017-08-30 | A kind of common rail diesel engine high pressure fuel line connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207261143U true CN207261143U (en) | 2018-04-20 |
Family
ID=61922620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721097191.3U Expired - Fee Related CN207261143U (en) | 2017-08-30 | 2017-08-30 | A kind of common rail diesel engine high pressure fuel line connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207261143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387278A (en) * | 2017-08-30 | 2017-11-24 | 河南柴油机重工有限责任公司 | A kind of common rail diesel engine high pressure fuel line connection |
-
2017
- 2017-08-30 CN CN201721097191.3U patent/CN207261143U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387278A (en) * | 2017-08-30 | 2017-11-24 | 河南柴油机重工有限责任公司 | A kind of common rail diesel engine high pressure fuel line connection |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |