CN208950750U - A kind of novel dual fuel injector - Google Patents
A kind of novel dual fuel injector Download PDFInfo
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- CN208950750U CN208950750U CN201821552629.7U CN201821552629U CN208950750U CN 208950750 U CN208950750 U CN 208950750U CN 201821552629 U CN201821552629 U CN 201821552629U CN 208950750 U CN208950750 U CN 208950750U
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Abstract
The utility model belongs to injector technical field, and in particular to a kind of novel dual fuel injector.The novel dual fuel injector, including case of sprayer, electromagnetic valve for natural gas, diesel oil solenoid valve and valve body, the case of sprayer is equipped with electromagnetic valve for natural gas, diesel oil solenoid valve and valve body, valve body and case of sprayer junction are equipped with intermediate, it is equipped with needle-valve and air valve in the valve body, needle-valve is respectively corresponded on the valve body and air valve is equipped with diesel oil spray orifice and natural gas spray orifice.The beneficial effect is that: control flexibility ratio is big, is able to achieve the independent control and individual injection of diesel oil and natural gas double-fuel, and realize natural gas being widely used on medium-heavy automobile.
Description
Technical field
The utility model belongs to injector technical field, and in particular to a kind of novel dual fuel injector.
Background technique
Medium and heavy vehicular engine, marine engine and the engine of medium and heavy engineering machinery currently on the market is mainly adopted
It uses diesel oil and small part using natural gas as fuel, gradually adds tight emission regulation to meet, Current internal combustion engines mainly use
Single diesel oil is sprayed as the high pressure direct injection natural gas in cylinder technology (high pressure co-rail system) or natural gas of fuel as the inlet manifold of fuel
Penetrate technology.
Use diesel oil as the internal combustion engine of single-fuel using newest high-pressure common rail spraying technique, efficiency of combustion is basic
Upper to be lower than 39%, the diesel oil molecule of ejection cannot be completely burned, and a part is discharged with the state of particle, and diesel oil is caused to be sent out
There are a large amount of molecules in the exhaust gas of motivation, while a certain amount of nitrogen oxides can also be discharged, very big to air pollution, with
The publication of six discharge standard of state, which gradually increases, while also bringing the increase of post processing cost.
Current a small amount of natural gas internal combustion engine is gas-duct jetting, is lighted by spark plug, efficiency of combustion is lower than
36%, and its unburned CH4 is expelled directly out, and will form the pollution to air, it is also difficult to meet the emission request gradually promoted.
Adjustment with national energy structure and the promotion to emission request, traditional with single gasoline or diesel oil is combustion
The internal combustion engine for burning medium will gradually decrease, and natural gas is abundant in China and global resources, can gradually fire as the substitution of diesel oil
Material starts to be applied to automobile market.
A kind of in-cylinder direct-jet technology of achievable dual fuel injection, can effectively improve efficiency of combustion by the way of compression ignition.
Indoor temperature of burning is promoted after first spraying a small amount of diesel oil compression ignition in the combustion chamber, the combustion of natural gas then sprayed that ignites is done
Efficiency of combustion can be promoted to 42% or more and reduce the discharge of particle and nitrogen oxides, more to clean, more passed through by function
The internal combustion engine injection system of Ji.But presently, there are dual fuel injector although the injection of two kinds of fuel can be realized, response
Underspeed, control precision is limited, simultaneously as structure is cumbersome, causes the consistency of product poor, higher cost, is double fuel
It the system calibrating of internal combustion engine and is widely applied and brings difficulty.
Utility model content
In order to make up for the defects of the prior art, the utility model provides a kind of novel dual fuel injectors.
The utility model is achieved by the following technical solution:
A kind of novel dual fuel injector, including case of sprayer, electromagnetic valve for natural gas, diesel oil solenoid valve and valve body, institute
It states and is attached and fastens with electromagnetic valve for natural gas, diesel oil solenoid valve and valve body on case of sprayer, valve body and case of sprayer
Junction is equipped with intermediate, is equipped with needle-valve and air valve in the valve body, and case of sprayer is equipped with diesel oil high pressure oil inlet, natural
Gas high pressure admission mouth and diesel oil oil return hole, natural gas high pressure air inlet are connected to air flue warp with enclosure interior by enclosure interior air flue
Intermediate air flue and nozzle air flue on intermediate are connected to natural gas cavity corresponding on valve body and air valve, and pass through natural gas
Solenoid valve is controlled, and the diesel oil high pressure oil inlet is connected to through the high-pressure oil duct on intermediate with high pressure oil storage cavity and needle-valve,
And controlled by diesel oil solenoid valve, natural gas spray orifice is arranged in the valve head, and diesel oil spray orifice is arranged in air valve head.
Further, the diesel oil solenoid valve is connected to by the first interface channel with the first oil duct, and diesel oil solenoid valve passes through bavin
Oily armature controls the second ball guiding and the control needle-valve unlatching of the second ball valve and closure, diesel oil high pressure oil inlet is driven to pass through the second high pressure
Oil duct on intermediate third high-pressure oil duct and the 4th high-pressure oil duct be connected to, make high pressure oil pass through the 4th high-pressure oil duct and needle-valve
Meter in hole enters needle control chamber, is then communicated by needle-valve fuel-displaced throttle orifice with the 4th oil duct, and the 4th oil duct passes through the
Two oil ducts are connected to the first oil duct, the final control realizing diesel oil solenoid valve and opening and closing to diesel injection, needle control chamber
Needle-valve meter in hole and needle-valve fuel-displaced throttle orifice flow effect cavity pressure pace of change.Diesel oil solenoid valve end passes through bavin
Oily back oil road is connected to drainback passage.
Further, the air valve is equipped with the 4th high-voltage oil cavity, and needle-valve is equipped with needle-valve guide sleeve, and air valve is equipped with air valve
Set, the 4th high-voltage oil cavity are connected to high pressure pressure accumulation chamber, and high pressure pressure accumulation chamber is connected to by oil-through hole with the pressure accumulation annulus on needle-valve, are stored
Pressure ring band is connected to by oil passage with high pressure oil storage cavity, and after needle-valve rises, each diesel oil on high pressure oil storage cavity and air valve sprays
Hole connection, is sprayed by each diesel oil spray orifice.
Further, multiple intermediate air flues, each intermediate air flue one end difference are respectively equipped on the valve body and intermediate
It is connected to air flue by enclosure interior air flue and enclosure interior to be connected to natural gas high pressure air inlet, other end passes through naturally respectively
Gas channel is communicated with natural gas cavity, and after air valve rises, natural gas cavity is connected to spray chamber, is formed on the valve body of spray chamber
Equipped with multiple natural gas spray orifices.
Further, the electromagnetic valve for natural gas is connected to by the second interface channel with third oil duct, and third oil duct passes through the
Five oil ducts are connected to air valve fuel-displaced throttle orifice with Air Valve Control chamber, and high pressure connection is by the second high-pressure oil duct and the 6th oil duct through gas
Valve meter in hole is connected to Air Valve Control chamber, the final control realizing electromagnetic valve for natural gas and opening and closing to natural gas injection
System, by the air valve meter in hole of Air Valve Control chamber and the flow effect cavity pressure pace of change of air valve fuel-displaced throttle orifice,
Electromagnetic valve for natural gas end is connected to by diesel oil back oil road with drainback passage.
Further, the outside matching area accurate grinding of the inside of the needle-valve guide sleeve and needle-valve and carry out it is even match, lead to
Crossing control occasionally has sealing and restriction effect with gap, and needle control chamber occasionally matches rear and injector shell by needle-valve and needle-valve guide sleeve
The lower end surface of body forms.
Further, the outside matching area accurate grinding of the air valve covers inside and air valve simultaneously occasionally match, and passes through control
System is even to have a sealing and restriction effect with gap, Air Valve Control chamber by air valve and air valve set it is even with afterwards with needle-valve, needle-valve guide sleeve
It is formed with the lower end surface of case of sprayer.
The beneficial effects of the utility model are: control flexibility ratio is big, it is able to achieve the independent control of diesel oil and natural gas double-fuel
System and individual injection；Fast response time, control precision is high, can realize the two kinds of fuel controls of bavin oil and gas respectively；In reality
Structure is simple during now, and homogeneity of product increases to which cost reduces, and finally can be improved the efficiency of combustion of internal combustion engine, and
Realize natural gas being widely used on medium-heavy automobile.
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 schematic diagram of the utility model valve body；
Attached drawing 3 is the structural schematic diagram of the utility model electromagnetic valve for natural gas and diesel oil solenoid valve；
Attached drawing 4 is that the air flue inside the utility model case of sprayer and intermediate is distributed Local map；
Attached drawing 5 is each oil duct partial sectional view in the utility model needle-valve guide sleeve region；
Attached drawing 6 is the partial sectional view of inside natural gas air flue and oil duct at the utility model injection；
Attached drawing 7 is the utility model natural gas air intake duct partial sectional view.
In figure, 1 electromagnetic valve for natural gas, 2 natural gas armature, 3 first balls guiding, 4 first ball valves, 5 second interface channels, 6
Diesel oil solenoid valve, 7 diesel oil armature, 8 second balls guiding, 9 second ball valves, 10 first oil ducts, 11 natural gas high pressure air inlets, 12 bavins
Oily back oil road, 13 case of sprayer, 14 second oil ducts, 15 third oil ducts, 16 drainback passages, 17 diesel oil high pressure oil inlets, 18
Two high-pressure oil ducts, 19 third high-pressure oil ducts, 20 the 4th high-pressure oil ducts, 21 the 4th oil ducts, 22 needle-valve meter in holes, 23 needle-valves go out
Oily throttle orifice, 24 enclosure interior air flues, 25 enclosure interiors are connected to air flue, and 26 nozzle air flues, 27 Air Valve Control chambers, 28 is excessively oily logical
Road, 29 the 4th high-voltage oil cavities, 30 intermediates, 31 valve bodies, 32 air valves, 33 needle-valves, 34 air valve sets, 35 needle-valve guide sleeves, 36 is natural
Gas cavity, 37 spray chambers, 38 natural gas spray orifices, 39 diesel oil spray orifices, 40 intermediate air flues, 41 air valve fuel-displaced throttle orifices, 42 the 5th
Oil duct, 43 the 6th oil ducts, 44 pressure accumulation annulus, 45 first interface channels, 46 high pressure pressure accumulation chambers, 47 oil-through holes, 48 air valve oil inlet sections
Discharge orifice, 49 natural gas channels, 50 needle control chambers, 51 high pressure oil storage cavities.
Specific embodiment
It is further described below with reference to embodiment novel dual fuel injector 6 a kind of to the utility model.
Attached drawing 1-7 is a kind of specific embodiment of the utility model.A kind of novel dual fuel injector of the utility model, packet
Include case of sprayer 13, electromagnetic valve for natural gas 1, diesel oil solenoid valve 6 and valve body 31, the case of sprayer 13 and natural gas electromagnetism
Valve 1, diesel oil solenoid valve 6 and valve body 31 are attached and fasten, and valve body 31 and 13 junction of case of sprayer are equipped with intermediate 30,
Needle-valve 33 and air valve 32 are equipped in the valve body 31, case of sprayer 13 is equipped with diesel oil high pressure oil inlet 17, natural gas high pressure
Air inlet 11 and diesel oil drainback passage 16, natural gas high pressure air inlet 11 are connected to gas with enclosure interior by enclosure interior air flue 24
Road 25 is through the intermediate air flue 40 and nozzle air flue 26 and natural gas cavity 36 corresponding on valve body 31 and air valve on intermediate 30
32 connections, and controlled by electromagnetic valve for natural gas 1, the diesel oil high pressure oil inlet 17 is through the third high pressure on intermediate 30
Oil duct 19 is connected to high pressure oil storage cavity 51 and needle-valve 33, and is controlled by diesel oil solenoid valve 6, and gas is directed on the valve body 31
Valve 32 is equipped with natural gas spray orifice 38, is directed to needle-valve 33 on air valve 32 and is equipped with diesel oil spray orifice 39.
Further, the diesel oil solenoid valve 6 is connected to by the first interface channel 45 with the first oil duct 10, diesel oil solenoid valve 6
Controlling the second ball guiding 8 by diesel oil armature 7 drives the second ball valve 9 to control the unlatching of needle-valve 33 and closure, diesel oil high pressure oil inlet
17 by the second high-pressure oil duct 18 on intermediate 30 third high-pressure oil duct 19 and the 4th high-pressure oil duct 20 be connected to, make high pressure oil
Enter needle control chamber 50 with needle-valve meter in hole 22 by the 4th high-pressure oil duct 20, then passes through needle-valve fuel-displaced throttle orifice 23
It is communicated with the 4th oil duct 21, the 4th oil duct 21 is connected to by the second oil duct 14 with the first oil duct 10, the needle-valve of needle control chamber 50
The flow effect cavity pressure pace of change in meter in hole 22 and needle-valve fuel-displaced throttle orifice 23.
Further, the air valve 32 is equipped with the 4th high-voltage oil cavity 29, and needle-valve 33 is equipped with needle-valve guide sleeve 35, on air valve 32
Equipped with air valve set 34, the 4th high-voltage oil cavity 29 is connected to high pressure pressure accumulation chamber 46, and high pressure pressure accumulation chamber 46 passes through oil-through hole 47 and needle-valve
Pressure accumulation annulus 44 on 33 is connected to, and pressure accumulation annulus 44 leads to oil passage 28 and is connected to high pressure oil storage cavity 51, after needle-valve 33 rises,
High pressure oil storage cavity 51 is connected to each diesel oil spray orifice 39 on air valve 32, is sprayed by each diesel oil spray orifice 39.
Further, multiple intermediate air flues 40, each intermediate air flue 40 are respectively equipped on the valve body 31 and intermediate 30
One end passes through enclosure interior air flue 24 respectively and enclosure interior connection air flue 25 is connected to natural gas high pressure air inlet 11, and in addition one
End is connected to by natural gas channel 49 with natural gas cavity 36 respectively, after needle-valve 32 rises, natural gas cavity 36 and spray chamber
37 connections, valve body 31 are equipped with multiple natural gas spray orifices 38 in the forming face of spray chamber 37.
Further, the electromagnetic valve for natural gas 1 is connected to by the second interface channel 5 with third oil duct 15, third oil duct 15
It is connected to by the 5th oil duct 42 with air valve fuel-displaced throttle orifice 41 with Air Valve Control chamber 27, high pressure connection 17 passes through the second high-pressure oil duct
18 and the 6th oil duct 43 be connected to through air valve meter in hole 48 with Air Valve Control chamber 27, the air valve meter in of Air Valve Control chamber 27
The flow effect cavity pressure pace of change in hole 48 and air valve fuel-displaced throttle orifice 41, electromagnetic valve for natural gas 1 pass through diesel oil back oil road
12 are connected to drainback passage 16.
Further, the outside matching area accurate grinding of the inside of the needle-valve guide sleeve 35 and needle-valve 33 and idol is carried out
Match, there is sealing and restriction effect by controlling even gap of matching, needle control chamber 50 is occasionally matched by needle-valve 33 with needle-valve guide sleeve 35
It is formed afterwards with the lower end surface of case of sprayer 13.
Further, the air valve covers 34 inside and the outside matching area accurate grinding of air valve 32 and occasionally match, and leads to
Cross that control is even to have a sealing and restriction effect with gap, Air Valve Control chamber 27 is even with afterwards and needle-valve by air valve 32 and air valve set 34
33, the lower end surface of needle-valve guide sleeve 35 and case of sprayer 13 forms.
Further, electromagnetic valve for natural gas 1 controls the opening and closing of natural gas, and natural gas electromagnet 1 controls the first ball valve 4
Opening and closing, control the pressure of Air Valve Control chamber 27 and the up and down motion of air valve 32, final to control natural gas nozzle 38 real
It now opens jet or closes jet, the control of 41 diameter of air valve meter in hole 48 and air valve fuel-displaced throttle orifice can be adjusted out effectively
The response speed for opening and closing, natural gas electromagnet 1 controls the raising and lowering of natural gas armature 2 when use, generates after power-up
Electromagnetic attracting force natural gas armature 2 rises, after power-off in the case where no electromagnetic force, work of the natural gas armature 2 in spring force
With decline, the raising and lowering of natural gas armature 2 will control the raising and lowering of the first ball guiding 3 and the first ball valve 4, the
The raising and lowering of one ball valve 4 will lead to the opening and closing of the second interface channel 5, the opening and closing of the second interface channel 5
The pressure that will affect third oil duct 15 and the 5th oil duct 42, when the second interface channel 5 is opened, 42 pressure of the 5th oil duct declines, when
42 pressure of the 5th oil duct rises when second interface channel 5 is closed.
Further, 27 pressure of Air Valve Control chamber will affect the raising and lowering of air valve 32, when the decline of 27 pressure of control chamber
Air valve 32 rises, and when 27 pressure of Air Valve Control chamber rises, air valve 32 declines, and high pressure oil passes through second through diesel oil high pressure connection 17
High-pressure oil duct 18 and the 6th oil duct 43 enter Air Valve Control chamber 27 by air valve meter in hole 48, then fuel-displaced by air valve
Throttle orifice 41 is communicated with the 5th oil duct 42, the air valve meter in hole 48 of Air Valve Control chamber 27 and the stream of air valve fuel-displaced throttle orifice 41
Amount influences cavity pressure pace of change, and flow ratio is bigger, and pressure release is faster, and 48 flows of air valve meter in hole are bigger, and pressurization is got over
Fastly.
Further, natural gas enters injector case of sprayer 13 by natural gas high pressure air inlet 11, by shell
Portion's air flue 24 is connected to air flue 25 with enclosure interior and flows into intermediate air flue 40 and nozzle air flue 26, and natural gas is distributed with certain pressure
In oil nozzle natural gas cavity 36.
Further, when the power-up of natural pneumoelectric magnet 1 causes the first ball valve 4 to rise, the second interface channel 5 is caused to be opened and the
When five oil ducts, 42 pressure declines, pressure in Air Valve Control chamber 27 is caused to decline, air valve 32 rises, and natural gas is flowed into from cavity 36 to be sprayed
Chamber 37 is penetrated, is sprayed finally by natural gas spray orifice 38, the flow in air valve meter in hole 48 and air valve fuel-displaced throttle orifice 41
Ratio influences the time for spraying and the amount of injection of natural gas, conversely, drawing when the power-off of natural pneumoelectric magnet 1 causes the first ball valve 4 to decline
When playing the closing of the second interface channel 5 and the rising of 42 pressure of the 5th oil duct, pressure in Air Valve Control chamber 27 is caused to rise, under air valve 32
Drop, the natural gas and spray chamber 37 of natural gas cavity 36 disconnect, and natural gas stops injection, and the lifting height of air valve 32 can influence seat
The throttle effect of face sealing area, to influence maximum natural gas injection amount.
Further, diesel oil solenoid valve 6 control the second ball valve 9 opening and closing, control needle control chamber 50 pressure and
The up and down motion of needle-valve 33, the diesel fuel nozzle of motion control up and down 39 of needle-valve 33, which is realized, opens oil spout and closing oil spout,
The control of 23 diameter of 22 diameter of diesel oil feeding throttle orifice and diesel oil fuel-displaced throttle orifice can effectively adjust the response speed of opening and closing
Degree.
Further, diesel oil solenoid valve 6 controls the raising and lowering of diesel oil armature 7, and electromagnetic attracting force diesel oil is generated after power-up
Armature 7 rises, and after power-off in the case where no electromagnetic force, diesel oil armature 7 declines under spring force, diesel oil armature 7
Raising and lowering, the raising and lowering of the second ball guiding 8 and the second ball valve 9 will be controlled, the raising and lowering of the second ball valve 9 will
The opening and closing of the first interface channel 45 are influenced, the opening and closing of the first interface channel 45 will affect the first oil duct 10, the
The pressure of two oil ducts 14 and the 4th oil duct 21, when the first interface channel 45 is opened, 21 pressure of the 4th oil duct declines, when the first company
21 pressure of the 4th oil duct when road 45 is closed to be connected to rise, 50 pressure of needle control chamber will affect the raising and lowering of needle-valve 33, when
Needle-valve 33 rises when 50 pressure of needle control chamber declines, and when 50 pressure of needle control chamber rises, needle-valve 33 declines.
Further, high pressure oil is by diesel oil high pressure oil inlet 17, by the second high-pressure oil duct 18 and the 4th high-pressure oil duct 20,
Needle-valve meter in hole 22 enters needle control chamber 50, is then communicated by needle-valve fuel-displaced throttle orifice 23 with the 4th oil duct 21, needle
Pressure becomes in the needle-valve meter in hole 22 of valve control chamber 50 and the flow effect needle control chamber 50 of needle-valve fuel-displaced throttle orifice 23
Change speed, flow ratio is bigger, and pressure release is faster, and 22 flows of needle-valve meter in hole are bigger, and pressurization is faster, meanwhile, high pressure oil is logical
Diesel oil high pressure oil inlet 17 is crossed, the 4th high-voltage oil cavity 29 is entered by the second high-pressure oil duct 18 and third high-pressure oil duct 19, the 4th
High pressure oil in high-voltage oil cavity 29 enters high pressure pressure accumulation chamber 46, then enters pressure accumulation annulus 44, pressure accumulation annulus 44 by oilhole 47
Interior high pressure oil enters high pressure oil storage cavity 51 by oil passage 28.
Further, when the power-up of diesel oil solenoid valve 6 causes the second ball valve 9 to rise, the first interface channel 45 is caused to be opened and the
When four oil ducts, 21 pressure declines, pressure is caused in needle control chamber 50 to decline, needle-valve 33 rises, and high-pressure diesel is from high pressure oil storage cavity
51 are sprayed by diesel oil spray orifice 39, conversely, causing the first connection when the power-off of diesel oil solenoid valve 6 causes the second ball valve 9 to decline
When channel 45 is closed and 21 pressure of the 4th oil duct rises, pressure in needle control chamber 50 is caused to rise, the decline of needle-valve 33 forms close
Envelope, high pressure oil storage cavity 51 and diesel oil spray orifice 39 separate, and diesel oil stops injection.The lifting height of needle-valve 33 can influence seat surface seal area
The throttle effect in domain, to influence maximum diesel oil distributive value.
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 (7)
1. a kind of novel dual fuel injector, including case of sprayer, electromagnetic valve for natural gas, diesel oil solenoid valve and valve body, special
Sign is, is attached and fastens with electromagnetic valve for natural gas, diesel oil solenoid valve and valve body on the case of sprayer, valve body and spray
Emitter housing junction is equipped with intermediate, is equipped with needle-valve and air valve in the valve body, case of sprayer be equipped with diesel oil high pressure into
Hydraulic fluid port, natural gas high pressure air inlet and diesel oil oil return hole, natural gas high pressure air inlet pass through enclosure interior air flue and enclosure interior
Be connected to air flue through on intermediate intermediate air flue and nozzle air flue and natural gas cavity corresponding on valve body and air valve connection, and
Controlled by electromagnetic valve for natural gas, the diesel oil high pressure oil inlet through on intermediate high-pressure oil duct and high pressure oil storage cavity and
Needle-valve connection, and controlled by diesel oil solenoid valve, natural gas spray orifice is arranged in the valve head, and diesel oil is arranged in air valve head
Spray orifice.
2. a kind of novel dual fuel injector according to claim 1, it is characterised in that: the diesel oil solenoid valve passes through the
A connection channel is connected to the first oil duct, diesel oil solenoid valve by diesel oil armature control the second ball guiding drive the second ball valve to
It controls needle-valve to open and closure, diesel oil high pressure oil inlet passes through third high-pressure oil duct on the second high-pressure oil duct and intermediate and the
The connection of four high-pressure oil ducts, makes high pressure oil enter needle control chamber by the 4th high-pressure oil duct and needle-valve meter in hole, then leads to
It crosses needle-valve fuel-displaced throttle orifice to communicate with the 4th oil duct, the 4th oil duct is connected to by the second oil duct with the first oil duct, finally realizes bavin
The control that solenoid opens and closes diesel injection, the needle-valve meter in hole of needle control chamber and needle-valve fuel-displaced throttle orifice
Flow effect cavity pressure pace of change, diesel oil solenoid valve end is connected to by diesel oil back oil road with drainback passage.
3. a kind of novel dual fuel injector according to claim 1, it is characterised in that: the air valve is equipped with the 4th high pressure
Oil pocket, needle-valve are equipped with needle-valve guide sleeve, and air valve is equipped with air valve set, and the 4th high-voltage oil cavity is connected to high pressure pressure accumulation chamber, high pressure
Pressure accumulation chamber is connected to by oil-through hole with the pressure accumulation annulus on needle-valve, and pressure accumulation annulus leads to oil passage and is connected to high pressure oil storage cavity, when
When needle-valve rises, high pressure oil storage cavity is connected to each diesel oil spray orifice on air valve, is sprayed by each diesel oil spray orifice.
4. a kind of novel dual fuel injector according to claim 1, it is characterised in that: divide on the valve body and intermediate
Not She You multiple intermediate air flues, each intermediate air flue one end pass through respectively enclosure interior air flue and enclosure interior connection air flue with
The connection of natural gas high pressure air inlet, other end pass through natural gas channel respectively and are connected to natural gas cavity with spray chamber, are formed
The valve body of spray chamber is equipped with multiple natural gas spray orifices.
5. a kind of novel dual fuel injector according to claim 1, it is characterised in that: the electromagnetic valve for natural gas passes through
Second interface channel is connected to third oil duct, and third oil duct is connected by the 5th oil duct and air valve fuel-displaced throttle orifice and air valve control chamber
Logical, diesel oil high pressure oil inlet is connected to through air valve meter in hole with air valve control chamber by the second high-pressure oil duct and the 6th oil duct,
The final control realized electromagnetic valve for natural gas and natural gas injection is opened and closed, the air valve meter in hole of Air Valve Control chamber with
The flow effect cavity pressure pace of change of air valve fuel-displaced throttle orifice, electromagnetic valve for natural gas end are logical by diesel oil back oil road and oil return
Road connection.
6. a kind of novel dual fuel injector according to claim 3, it is characterised in that: the inside of the needle-valve guide sleeve
With the outside matching area accurate grinding of needle-valve and carry out it is even match, there is sealing and restriction effect, needle with gap by the way that control is even
Valve control chamber forms after occasionally being matched by needle-valve with needle-valve guide sleeve in the lower end surface of case of sprayer.
7. a kind of novel dual fuel injector according to claim 3, it is characterised in that: the inside of the air valve set is gentle
The outside matching area accurate grinding of valve simultaneously carry out it is even match, there is sealing and restriction effect, air valve control with gap by the way that control is even
Chamber processed is made of air valve and the even lower end surface with afterwards with needle-valve, needle-valve guide sleeve and case of sprayer of air valve set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821552629.7U CN208950750U (en) | 2018-09-21 | 2018-09-21 | A kind of novel dual fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821552629.7U CN208950750U (en) | 2018-09-21 | 2018-09-21 | A kind of novel dual fuel injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208950750U true CN208950750U (en) | 2019-06-07 |
Family
ID=66738967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821552629.7U Active CN208950750U (en) | 2018-09-21 | 2018-09-21 | A kind of novel dual fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208950750U (en) |
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2018
- 2018-09-21 CN CN201821552629.7U patent/CN208950750U/en active Active
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Effective date of registration: 20191128 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. |