CN207634224U - A kind of fuel injector pressure-control valve - Google Patents
A kind of fuel injector pressure-control valve Download PDFInfo
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- CN207634224U CN207634224U CN201721383083.2U CN201721383083U CN207634224U CN 207634224 U CN207634224 U CN 207634224U CN 201721383083 U CN201721383083 U CN 201721383083U CN 207634224 U CN207634224 U CN 207634224U
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- fuel injector
- valve
- high pressure
- middle position
- electromagnetic valve
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Abstract
The utility model discloses a kind of fuel injector pressure-control valves, including fuel injector intermediate, static draining duct, needle-valve tappet, high pressure oil input channel, high pressure fuel feed hole, valve core of the electromagnetic valve, slide bar, sliding rail, fixed block, the middle position on fuel injector intermediate top is equipped with armature, and the top at fuel injector intermediate bosom position is vertically equipped with valve core of the electromagnetic valve and passes through spring, bottom end at the fuel injector intermediate bosom position is vertically equipped with needle-valve tappet, and is provided with control chamber between valve core of the electromagnetic valve and needle-valve tappet.The utility model is by being equipped with high pressure fuel feed hole and low pressure oil return hole, high pressure fuel feed hole and low pressure oil return hole are independent from each other the influence for controlling cavity pressure when in use, it need not be matched, so as to the structure snd size of flexible design high pressure fuel feed hole and low pressure oil return hole, so that control cavity pressure is quickly raised and lowered, improves fuel injector and spray the speed of response.
Description
Technical field
The utility model is related to fuel injection technic field, specially a kind of fuel injector pressure-control valve.
Background technology
Fuel injector equipped with conventional solenoid valve, in injection process, low pressure oil return metering-orifice and high pressure oil inlet metering-orifice communicate, will
There are a considerable amount of high pressure fuels to flow through control chamber, fuel tank is flowed back to by solenoid valve, this partial high pressure fuel oil has very high
Pressure, but do not work, become heat completely, cause energy loss, in addition, in injection process control chamber into and out of oil mass
The unicom in hole, the high pressure fuel in common rail pipe directly flow back to fuel tank so that common rail pressure declines, and as a result makes under actual fuel injection pressure
Drop, influences fuel-oil atmozation quality, and in addition the high pressure oil inlet metering-orifice of control chamber in the fuel injector of conventional solenoid valve is housed returned with low pressure
The selection in oil mass hole aperture mutually restricts, and considers further that the factors such as needle-valve opening speed, seating velocity, high pressure oil inlet metering-orifice and
The selection of low pressure oil return metering-orifice can only be the compromise of many factors, so now need to propose a kind of reduction high pressure fuel loss, and
The solenoid valve for accelerating hydraulic response rate improves fuel utilization ratio with this.
Utility model content
The purpose of this utility model is to provide a kind of fuel injector pressure-control valves, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the utility model provides the following technical solutions：A kind of fuel injector pressure-control valve, including spray
Oily device intermediate, static draining duct, needle-valve tappet, high pressure oil input channel, high pressure fuel feed hole, valve core of the electromagnetic valve, slide bar, sliding rail,
The middle position of fixed block, fuel injector intermediate top is equipped with armature, and fuel injector intermediate bosom position
The top at place is vertically equipped with valve core of the electromagnetic valve, and the bottom end at the fuel injector intermediate bosom position is vertically equipped with needle
Valve tappet, and control chamber is provided between valve core of the electromagnetic valve and needle-valve tappet, the bottom end of the valve core of the electromagnetic valve is uniformly equipped with
Oil ring groove is contained, and the middle position for containing oil ring groove is both provided with high pressure fuel feed hole, the fuel injector intermediate interior side
Middle position is evenly arranged with high pressure oil input channel, and high pressure oil input channel is connected with Sheng oil ring groove, among the fuel injector
Side of the internal portion far from high pressure oil input channel is vertically provided with static draining duct, and the bottom end in static draining duct is laterally arranged
There is low pressure oil return duct, the top of the armature is equipped with shell, and the both sides of enclosure are both provided with sliding slot, the shell
Internal middle position is vertically equipped with slip pipe, and the bottom end of slip pipe both sides is mounted on electromagnet, the surrounding of the slip pipe
It is both provided with sliding rail, and the middle position on slip pipe top is equipped with fixed block, the surrounding of the fixed block is mounted on slide bar
It is connected with sliding rail, and the middle position of fixed block bottom end is vertically equipped with spring, and the top of spring 15 and valve core of the electromagnetic valve
End is connected, and side of the slide bar far from fixed block is equipped with iron block, and the middle position of iron block both sides is transversely mounted
There is connecting rod, the connecting rod is mounted on sliding block far from iron block place side, and sliding block is connected with sliding slot.
Preferably, the junction of the armature and fuel injector intermediate is equipped with sealing ring.
Preferably, the outside of the fuel injector intermediate is uniformly equipped with anti-explosion hoop, and in fuel injector intermediate side
Between be provided with visual windows at position.
Preferably, the valve core of the electromagnetic valve is two ranks, three sections of cylinders, and diameter becomes larger three sections of cylinders successively from top to bottom.
Preferably, the both sides of the sliding slot are mounted on limited block.
Compared with prior art, the utility model has the beneficial effects that：The fuel injector pressure-control valve is by being equipped with height
It is pressed into oilhole and low pressure oil return hole, high pressure fuel feed hole and low pressure oil return hole are mutually solely to the influence for controlling cavity pressure when in use
Vertical, it need not be matched, so as to the structure snd size of flexible design high pressure fuel feed hole and low pressure oil return hole, make control
Cavity pressure is quickly raised and lowered, and improves fuel injector and sprays the speed of response, while device is by being equipped with armature and electromagnetism
Valve core, armature and valve core of the electromagnetic valve are equipped with many places and compress sealing surface, reduce the static leakage of high pressure fuel, while device
By being equipped with sliding slot, sliding block, sliding rail and connecting rod, sliding when in use is not easy deviation post.
Description of the drawings
Fig. 1 is that the structure of the utility model faces diagrammatic cross-section；
Fig. 2 is the structure schematic elevation view of the utility model；
Fig. 3 is the structure partial diagrammatic cross-section of the utility model；
In figure：1- iron blocks；2- connecting rods；3- slip pipes；4- electromagnet；5- armature；6- fuel injector intermediates；7- static state drainings
Duct；8- low pressure oil returns duct；9- needle-valve tappets；10- control chambers；11- high pressure oil input channels；12- contains oil ring groove；13- high pressures into
Oilhole；14- valve core of the electromagnetic valve；15- springs；16- slide bars；17- shells；18- visual windows；19- anti-explosion hoops；20- sliding rails；21-
Sliding slot；22- sliding blocks；23- fixed blocks.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, a kind of embodiment provided by the utility model：A kind of fuel injector pressure-control valve, including oil spout
Device intermediate 6, static draining duct 7, needle-valve tappet 9, high pressure oil input channel 11, high pressure fuel feed hole 13, valve core of the electromagnetic valve 14, slide bar
16, sliding rail 20, fixed block 23, the middle position on 6 top of fuel injector intermediate are equipped with armature 5, fuel injector intermediate 6 it is outer
Side is uniformly equipped with anti-explosion hoop 19, and the middle position of 6 side of fuel injector intermediate is provided with visual windows 18, armature 5 with
The junction of fuel injector intermediate 6 is equipped with sealing ring, and the top at 6 bosom position of fuel injector intermediate is vertically installed
It is two ranks, three sections of cylinders to have valve core of the electromagnetic valve 14, valve core of the electromagnetic valve 14, and diameter becomes larger three sections of cylinders successively from top to bottom, spray
Bottom end at 6 bosom position of oily device intermediate is vertically equipped with needle-valve tappet 9, and valve core of the electromagnetic valve 14 and needle-valve tappet 9
Between be provided with control chamber 10, the bottom end of valve core of the electromagnetic valve 14, which is uniformly equipped with, contains oil ring groove 12, and contains the centre of oil ring groove 12
Be both provided with high pressure fuel feed hole 13 at position, the middle position of 6 interior side of fuel injector intermediate be evenly arranged with high pressure into
Oil duct 11, and high pressure oil input channel 11 is connected with Sheng oil ring groove 12,6 inside of fuel injector intermediate is far from high pressure oil input channel 11
Side is vertically provided with static draining duct 7, and the bottom end in static draining duct 7 is horizontally arranged with low pressure oil return duct 8, armature
5 top is equipped with shell 17, and the both sides inside shell 17 are both provided with sliding slot 21, and the both sides of sliding slot 21 are mounted on limit
Block, the middle position inside shell 17 is vertically equipped with slip pipe 3, and the bottom end of 3 both sides of slip pipe is mounted on electromagnet 4, sliding
The surrounding of pipe 3 is both provided with sliding rail 20, and the middle position on 3 top of slip pipe is equipped with fixed block 23, the surrounding of fixed block 23
It is mounted on slide bar 16 with sliding rail 20 to be connected, and the middle position of 23 bottom end of fixed block is vertically equipped with spring 15, and bullet
Spring 15 is connected with the top of valve core of the electromagnetic valve 14, and side of the slide bar 16 far from fixed block 23 is equipped with iron block 1, and 1 liang of iron block
The middle position of side is horizontally installed with connecting rod 2, and connecting rod 2 is mounted on sliding block 22 far from the local side of iron block 1, and sliding
Block 22 is connected with sliding slot 21.
Operation principle：In use, when 4 no power of electromagnet, without electromagnetic force, suffered by armature 5 and valve core of the electromagnetic valve 14
The magnetic valve spring power arrived is more than 10 pressure of control chamber, and the resultant force suffered by armature 5 and valve core of the electromagnetic valve 14 is downward, 5 lower end of armature
Face is compacted with 6 upper surface of fuel injector intermediate, is formed sealing, is reduced high pressure fuel and pass through valve core of the electromagnetic valve 14 and fuel injector
The slot leakage of intermediate 6, meanwhile, the high pressure oil input channel 11 on fuel injector intermediate 6 and the Sheng oil ring on valve core of the electromagnetic valve 14
Slot 12 communicates, and the low pressure oil return duct 8 on fuel injector intermediate 6 is obstructed by 14 side wall of valve core of the electromagnetic valve, at this point, high pressure fuel passes through
By high pressure oil input channel 11, contain oil ring groove 12, the inflow control chamber 10 of high pressure fuel feed hole 13 so that 10 pressure rise of control chamber, effect
Pressure in 9 upper surface of needle-valve tappet increases so that and needle-valve tappet 9 moves downward, and fuel injector is closed, when electromagnet 4 is powered,
Electromagnetic force is generated, armature 5 and valve core of the electromagnetic valve 14 overcome solenoid valve bullet under the collective effect of 10 pressure of electromagnetic force and control chamber
Spring force moves upwards, and the oil ring groove 12 of containing on valve core of the electromagnetic valve 14 is disconnected with the high pressure oil input channel 11 on fuel injector intermediate 6,
And the low pressure oil return duct 8 on fuel injector intermediate 6 is opened at this time, the high pressure fuel in control chamber 10 is via low pressure oil return duct
8 flow back to fuel tank, 10 pressure reduction of control chamber, and 9 upper end stress of needle-valve tappet reduces, and needle-valve tappet 9 moves upwards, and needle-valve is opened,
Fuel injector commencement of fuel injection, simultaneously, the step surface of valve core of the electromagnetic valve 14 are compressed with the step surface of fuel injector intermediate 6, are formed
Sealing, can also reduce high pressure fuel leak.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (5)
1. a kind of fuel injector pressure-control valve, including fuel injector intermediate (6), static draining duct (7), needle-valve tappet (9), height
It is pressed into oil duct (11), high pressure fuel feed hole (13), valve core of the electromagnetic valve (14), slide bar (16), sliding rail (20), fixed block (23), it is special
Sign is：The middle position on fuel injector intermediate (6) top is equipped with armature (5), and fuel injector intermediate (6) is internal
The top of middle position is vertically equipped with valve core of the electromagnetic valve (14), at fuel injector intermediate (6) the bosom position
Bottom end is vertically equipped with needle-valve tappet (9), and control chamber (10) is provided between valve core of the electromagnetic valve (14) and needle-valve tappet (9),
The bottom end of the valve core of the electromagnetic valve (14), which is uniformly equipped with, contains oil ring groove (12), and the middle position for containing oil ring groove (12) is all provided with
It is equipped with high pressure fuel feed hole (13), the middle position of fuel injector intermediate (6) interior side is evenly arranged with high pressure oil inlet
Road (11), and high pressure oil input channel (11) is connected with Sheng oil ring groove (12), the fuel injector intermediate (6) is internal far from high pressure
The side of oil input channel (11) is vertically provided with static draining duct (7), and the bottom end of static draining duct (7) be horizontally arranged with it is low
Oilhole road (8) is pushed back, the top of the armature (5) is equipped with shell (17), and the both sides of shell (17) inside are both provided with cunning
Slot (21), the internal middle position of the shell (17) is vertically equipped with slip pipe (3), and the bottom end of slip pipe (3) both sides is pacified
Equipped with electromagnet (4), the surrounding of the slip pipe (3) is both provided with sliding rail (20), and the middle position installation on slip pipe (3) top
There is fixed block (23), the surrounding of the fixed block (23) is mounted on slide bar (16) and is connected with sliding rail (20), and fixed block
(23) middle position of bottom end is vertically equipped with spring (15), and spring (15) is connected with the top of valve core of the electromagnetic valve (14)
It connects, side of the slide bar (16) far from fixed block (23) is equipped with iron block (1), and the middle position of iron block (1) both sides is equal
It is horizontally installed with connecting rod (2), the connecting rod (2) is mounted on sliding block (22), and sliding block far from the local side of iron block (1)
(22) it is connected with sliding slot (21).
2. a kind of fuel injector pressure-control valve according to claim 1, it is characterised in that：The armature (5) and fuel injector
The junction of intermediate (6) is equipped with sealing ring.
3. a kind of fuel injector pressure-control valve according to claim 1, it is characterised in that：The fuel injector intermediate (6)
Outside anti-explosion hoop (19) is uniformly installed, and the middle position of fuel injector intermediate (6) side is provided with visual windows
(18)。
4. a kind of fuel injector pressure-control valve according to claim 1, it is characterised in that：The valve core of the electromagnetic valve (14) is
Two three sections of rank cylinders, diameter becomes larger three sections of cylinders successively from top to bottom.
5. a kind of fuel injector pressure-control valve according to claim 1, it is characterised in that：The both sides of the sliding slot (21) are equal
Limited block is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721383083.2U CN207634224U (en) | 2017-10-25 | 2017-10-25 | A kind of fuel injector pressure-control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721383083.2U CN207634224U (en) | 2017-10-25 | 2017-10-25 | A kind of fuel injector pressure-control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207634224U true CN207634224U (en) | 2018-07-20 |
Family
ID=62858798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721383083.2U Active CN207634224U (en) | 2017-10-25 | 2017-10-25 | A kind of fuel injector pressure-control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207634224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798184A (en) * | 2019-03-04 | 2019-05-24 | 李振中 | Multi-cylinder axis puts internal combustion engine |
-
2017
- 2017-10-25 CN CN201721383083.2U patent/CN207634224U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798184A (en) * | 2019-03-04 | 2019-05-24 | 李振中 | Multi-cylinder axis puts internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 301721 No. 6, north of Jiayuan Road, Beijing Tianjin Science and Technology Valley, Wuqing District, Tianjin Patentee after: Tianjin Guangheng Special Equipment Co.,Ltd. Address before: 301700 No. 6, North Side of Jiayuan Road, Jingjin Science and Technology Valley, Wuqing District, Tianjin Patentee before: TIANJIN CISRI GUANGHENG SPECIAL EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |