CN208918717U - A kind of double kinematic pair connected structures of injector - Google Patents
A kind of double kinematic pair connected structures of injector Download PDFInfo
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- CN208918717U CN208918717U CN201821551750.8U CN201821551750U CN208918717U CN 208918717 U CN208918717 U CN 208918717U CN 201821551750 U CN201821551750 U CN 201821551750U CN 208918717 U CN208918717 U CN 208918717U
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- air valve
- valve
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- guide sleeve
- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model belongs to injector technical field, and in particular to a kind of double kinematic pair connected structures of injector.The double kinematic pair connected structures of the injector, including air valve guide sleeve, air valve and needle-valve, the needle-valve is occasionally matched with air valve guide sleeve, needle control chamber is formed at the top of needle-valve, the air valve guide sleeve is equipped with air valve meter in hole, needle-valve meter in hole and needle-valve fuel-displaced throttle orifice, high pressure oil pressure accumulation chamber is equipped between intermediate and intermediate sleeve, fuel feed hole is connected to high pressure oil pressure accumulation chamber, high pressure oil pressure accumulation chamber is connected to by air valve meter in hole with Air Valve Control chamber, the air valve guide sleeve is coupled with air valve using intracavitary fixation, it is acted on by the pressing force of middle springs, the protrusion platform of air valve guide sleeve and the interior concave station of air valve are in close contact and are positioned at contact surface.The beneficial effect is that: solve the independent control of natural gas air valve and diesel oil needle-valve, structure is simple, easy for installation, the response speed of the injector of raising.
Description
Technical field
The utility model belongs to injector technical field, and in particular to a kind of double kinematic pair connected structures of injector.
Background technique
To realize energy resource structure upgrading, domestic market starts exploitation using natural gas engine use in medium and heavy vehicle
On substitute products as diesel engine, to guarantee emission request and fuel efficiency, direct injection technology is in double combustions in engine cylinder
It is applied on material ejector, such product needs to realize the individual injection of bavin oil and gas, but in order to same in current production
When take into account diesel injection and natural gas injection, the design of natural gas nozzle is complicated, and manufacture and assembly technology are cumbersome, causes in product
Portion mostly uses the mode of threaded connection to control diesel injection and natural gas injection, eventually leads to the response speed mistake of product in this way
Slowly, clearance fit is difficult, and the consistency decline of production is excessively high to product cost, meanwhile, the product reliability service life shorten and
There are the risks of internal leakage, in high revolving speed internal combustion engine, need strict control diesel injection and natural gas injection it is lasting when
Between, the response speed of natural gas nozzle can not be such as effectively improved, the external characteristics and emission request of internal combustion engine will be unable to meet simultaneously.
Utility model content
In order to make up for the defects of the prior art, the utility model provides a kind of independent controls for realizing bavin oil and gas
System injection, while guaranteeing diesel injection, improves the response speed of natural gas nozzle, reduces internal leakage and reliability
The double kinematic pair connected structures of the injector of risk.
The utility model is achieved by the following technical solution:
A kind of double kinematic pair connected structures of injector, including air valve guide sleeve, air valve and needle-valve, the needle-valve are led with air valve
Match to set is even, form needle control chamber at the top of needle-valve, the air valve guide sleeve is equipped with air valve meter in hole, needle-valve oil inlet
Throttle orifice and needle-valve fuel-displaced throttle orifice are equipped with high pressure oil pressure accumulation chamber, fuel feed hole and high pressure oil pressure accumulation between intermediate and intermediate sleeve
Chamber connection, high pressure oil pressure accumulation chamber are connected to Air Valve Control chamber by air valve meter in hole, are connected to by oilhole with the first annulus,
It is connected to by needle-valve meter in hole with needle control chamber, needle control chamber is by needle-valve fuel-displaced throttle orifice and the second annulus and outside
Boundary's oil duct connects, and the air valve guide sleeve is coupled with air valve using intracavitary fixation, is acted on by the pressing force of middle springs, gas
The protrusion platform of valve guide sleeve and the interior concave station of air valve are in close contact at contact surface.
Further, the protrusion platform of the air valve guide sleeve enters air valve inner cavity by the concave channel of air valve, protrusion platform into
After the rotation of air inlet valve inner cavity, the protrusion platform of air valve guide sleeve is acted on tight at contact surface with the interior concave station of air valve by middle springs
Patch, and the retention bead in protrusion platform is stuck in the limiting slot of air valve and realizes positioning.
Further, described to form diesel injection chamber, air valve outer surface in nozzle head, air valve inner surface and needle-valve outer surface
Natural air cavity is formed with valve interior surface, diesel injection chamber is connected to air valve end part diesel oil spray orifice when needle-valve rises, and works as gas
Natural air cavity is connected to the fumarole of valve end when valve rising.
The beneficial effects of the utility model are: solving the independent control of natural gas air valve and diesel oil needle-valve, structure is simple,
It is easy for installation, solve the risk for generating in motion process and mutually rotating, while saving more spaces convenient for air flue and oil
The distribution in road reduces product cost, and the up and down motion of air valve is driven by using the mode of manifold type movement, raising
The response speed of injector.
Detailed description of the invention
The utility model will be further described below with reference to the accompanying drawings.
Attached drawing 1 is the structural schematic diagram of the utility model；
Attached drawing 2 is the partial sectional view of the utility model；
Attached drawing 3 is the structural schematic diagram of the utility model air valve guide sleeve；
Attached drawing 4 is the structural schematic diagram of the utility model air valve.
In figure, 1 intermediate, 2 intermediate sleeves, 3 air valve guide sleeves, 4 air valves, 5 needle-valves, 6 Air Valve Control chambers, 7 fuel feed holes, 8 is high
Pressure oil pressure accumulation chamber, 9 meter in holes, 10 oilholes, 11 first annulus, 12 needle-valve meter in holes, 13 needle control chambers, 14 needle-valves
Fuel-displaced throttle orifice, 15 second annulus, 16 oil ducts, concave station in 17,18 protrusion platforms, 19 contact surfaces, 20 diesel injection chambers, the spray of 21 diesel oil
Hole, 22 natural air cavitys, 23 fumaroles, 24 middle springs, 25 concave channels, 26 retention beads, 27 limit card slots, 28 valve bodies, 29
Extraneous oil duct.
Specific embodiment
A kind of double kinematic pair connected structures of injector of the utility model are further described below with reference to embodiment.
Attached drawing 1-4 is a kind of specific embodiment of the utility model.A kind of double kinematic pair linkings of injector of the utility model
Structure, including air valve guide sleeve 3, air valve 4 and needle-valve 5, the needle-valve 5 are occasionally matched with air valve guide sleeve 3, are formed at the top of needle-valve 5
Needle control chamber 13, it is fuel-displaced that the air valve guide sleeve 3 is equipped with air valve meter in hole 9, needle-valve meter in hole 12 and needle-valve
Throttle orifice 14 is equipped with high pressure oil pressure accumulation chamber 8 between intermediate 1 and intermediate sleeve 2, fuel feed hole 7 is connected to high pressure oil pressure accumulation chamber 8, high
Pressure oil pressure accumulation chamber 8 is connected to by air valve meter in hole 9 with Air Valve Control chamber 6, is connected to by oilhole 10 with the first annulus 11, is led to
It crosses needle-valve meter in hole 12 to be connected to needle control chamber 13, needle control chamber 13 passes through needle-valve fuel-displaced throttle orifice 14 and the second ring
Band 15 connects with extraneous oil duct 29, and the air valve guide sleeve 3 is coupled with air valve 4 using intracavitary fixation, by middle springs 24
Pressing force effect, the protrusion platform 18 of air valve guide sleeve 3 and the interior concave station 17 of air valve 4 are in close contact at contact surface 19.
Further, the protrusion platform 18 of the air valve guide sleeve 3 enters 4 inner cavity of air valve by the concave channel 25 of air valve 4, convex
After appearance 18 enters the rotation of 4 inner cavity of air valve, the protrusion platform 18 of air valve guide sleeve 3 is acted on the indent with air valve 4 by middle springs 24
Platform 17 is close at contact surface 19, and the retention bead 26 in protrusion platform 18 is stuck in the limiting slot of air valve 4 and realizes positioning.
Further, the air valve 4 forms diesel injection chamber 20 and natural air cavity 22 with needle-valve 5 and valve body 28, on needle-valve 5
Diesel injection chamber 20 is connected to 4 end part diesel oil spray orifice 21 of air valve when rising, air valve 4 natural air cavity 22 and 28 end of valve body when rising
Fumarole 23 be connected to.
A kind of double kinematic pair connected structures of injector of the utility model, air valve guide sleeve 3 and air valve 4 are using intracavitary fixation
Mode is coupled, and is acted on by the pressing force of middle springs 24, the protrusion platform 18 of air valve guide sleeve 3 and the interior concave station 17 of air valve 4
It is in close contact at contact surface 19, the pressure in oil duct 16 directly controls the pressure of Air Valve Control chamber 6, when Air Valve Control chamber 6
Pressure decline when, air valve guide sleeve 3 is moved upwards by the effect of lower section hydraulic coupling, at the same by coupled modes drive air valve 4 to
Upper movement, so that the natural gas being accumulated in natural air cavity 22 realizes injection by fumarole 23.
Conversely, air valve guide sleeve 3 drives air valve 4 to transport downwards by coupled structure when pressure rises in Air Valve Control chamber 6
Dynamic, natural gas injection stops, and male part air valve guide sleeve 3 is linked with air valve 4 by intracavity in figure, the protrusion of air valve guide sleeve 3
Platform 18 enters 4 inner cavity of air valve by the concave channel 25 of air valve 4, rotates by a certain angle after protrusion platform 18 enters 4 inner cavity of air valve,
The protrusion platform 18 of air valve guide sleeve 3 is acted on by middle springs 24 to be close at contact surface 19 with the interior concave station 17 of air valve 4, meanwhile,
Retention bead 26 in protrusion platform 18, which is stuck in the limit card slot 27 of air valve 4, realizes positioning, and high pressure oil is entered high by fuel feed hole 7
Pressure oil pressure accumulation chamber 8, the intracavitary high pressure oil of pressure accumulation by meter in hole 9 enter Air Valve Control chamber 6, meanwhile, also by oilhole 10 into
Enter in the first annulus 11, needle control chamber 13 is entered by needle-valve meter in hole 12, the high pressure oil of needle control chamber 13 passes through
Needle-valve fuel-displaced throttle orifice 14 enters the second annulus 15 and connects with extraneous oil duct 29, when the pressure in the second annulus 15 declines in figure
When, the high pressure oil in needle control chamber 13 is flowed out by fuel-displaced throttle orifice 14, and the pressure decline in control chamber, needle-valve 5 is in hydraulic coupling
Under the action of move upwards, the high pressure oil being accumulated in diesel injection chamber 20 in this way is sprayed by diesel oil spray orifice 21.
Conversely, the pressure in needle control chamber 13 rises, and needle-valve 5 is by control chamber when pressure rises in the second annulus 15
Interior pressure influence moves downward, and disconnects the high pressure oil in diesel injection chamber 20 by diesel oil spray orifice 21, diesel injection stops.
During the installation process, middle springs 24 are fitted into the cavity of air valve 4, by the protrusion platform 18 of air valve guide sleeve 3 with
The concave channel 25 of air valve 4 presses certain depth after being aligned, and after then rotating by a certain angle, air valve guide sleeve 3 and air valve 4 will be certainly
It is dynamic to lock and be mutually close to.
The utility model is not limited to above embodiment, anyone, which should learn, makes under the enlightenment of the utility model
There is same or similar technical solution with the utility model, each fall within the protection scope of the utility model.
Technology that the utility model is not described in detail, shape, construction portion are well-known technique.
Claims (3)
1. a kind of double kinematic pair connected structures of injector, including air valve guide sleeve, air valve and needle-valve, which is characterized in that the needle
Valve is occasionally matched with air valve guide sleeve, and needle control chamber is formed at the top of needle-valve, and the air valve guide sleeve is equipped with air valve meter in
Hole, needle-valve meter in hole and needle-valve fuel-displaced throttle orifice, between intermediate and intermediate sleeve be equipped with high pressure oil pressure accumulation chamber, fuel feed hole with
The connection of high pressure oil pressure accumulation chamber, high pressure oil pressure accumulation chamber are connected to by air valve meter in hole with Air Valve Control chamber, and oilhole and the are passed through
One annulus connection, be connected to by needle-valve meter in hole with needle control chamber, needle control chamber pass through needle-valve fuel-displaced throttle orifice with
Second annulus connects with extraneous oil duct, and the air valve guide sleeve is coupled with air valve using intracavitary fixation, by middle springs
Pressing force effect, the protrusion platform of air valve guide sleeve and the interior concave station of air valve are in close contact at contact surface.
2. a kind of double kinematic pair connected structures of injector according to claim 1, it is characterised in that: the air valve guide sleeve
Protrusion platform air valve inner cavity is entered by the concave channel of air valve, after protrusion platform enters the rotation of air valve inner cavity, air valve guide sleeve
Protrusion platform is acted on by middle springs to be close to the interior concave station of air valve in contact surface, and the retention bead in protrusion platform is stuck in air valve
Positioning is realized in limiting slot.
3. a kind of double kinematic pair connected structures of injector according to claim 1, it is characterised in that: the air valve and needle-valve
It is respectively formed diesel injection chamber and natural air cavity with valve body, diesel injection chamber and air valve end diesel oil spray orifice connect when needle-valve rises
Logical, when air valve rises, natural air cavity is connected to the fumarole of valve end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821551750.8U CN208918717U (en) | 2018-09-21 | 2018-09-21 | A kind of double kinematic pair connected structures of injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821551750.8U CN208918717U (en) | 2018-09-21 | 2018-09-21 | A kind of double kinematic pair connected structures of injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208918717U true CN208918717U (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821551750.8U Active CN208918717U (en) | 2018-09-21 | 2018-09-21 | A kind of double kinematic pair connected structures of injector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057998A (en) * | 2018-09-21 | 2018-12-21 | 英嘉动力科技无锡有限公司 | A kind of double kinematic pair connected structures of injector |
-
2018
- 2018-09-21 CN CN201821551750.8U patent/CN208918717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057998A (en) * | 2018-09-21 | 2018-12-21 | 英嘉动力科技无锡有限公司 | A kind of double kinematic pair connected structures of injector |
| CN109057998B (en) * | 2018-09-21 | 2024-10-01 | 英嘉动力科技无锡有限公司 | Double-kinematic pair connection structure of ejector |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191127 Address after: F4, chuangstar incubator, F2, building F11, No. 200, Linghu Avenue, Xinwu District, Wuxi City, Jiangsu Province Co-patentee after: Wuxi Weifu High-Technology Co., Ltd. Patentee after: Yingjia Power Technology Wuxi Co., Ltd. Address before: 214000 Jiangsu Province Xinwu District, Wuxi City, Changjiang Road, Kechuang Park, Block A, Block 2, 302 Patentee before: Yingjia Power Technology Wuxi Co., Ltd. |