CN109026474A - A kind of novel double fuel in-cylinder direct-jet injector - Google Patents
A kind of novel double fuel in-cylinder direct-jet injector Download PDFInfo
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- CN109026474A CN109026474A CN201811109490.3A CN201811109490A CN109026474A CN 109026474 A CN109026474 A CN 109026474A CN 201811109490 A CN201811109490 A CN 201811109490A CN 109026474 A CN109026474 A CN 109026474A
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- Prior art keywords
- valve
- oil
- natural gas
- diesel oil
- oil duct
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- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 229940090046 jet injector Drugs 0.000 title claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 160
- 239000002283 diesel fuel Substances 0.000 claims abstract description 82
- 239000003345 natural gas Substances 0.000 claims abstract description 79
- 239000007921 spray Substances 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 230000007423 decrease Effects 0.000 claims description 25
- 238000009825 accumulation Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 2
- 239000003546 flue gas Substances 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000543 intermediate Substances 0.000 description 28
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 6
- 206010022000 influenza Diseases 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/04—Injectors peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention belongs to injector technical fields, and in particular to a kind of novel double fuel in-cylinder direct-jet injector.The novel double fuel in-cylinder direct-jet 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, needle-valve and air valve are equipped in the valve body, case of sprayer is equipped with high pressure connection, inlet suction port and diesel oil drainback passage, the valve body is equipped with natural gas spray orifice, air valve is equipped with diesel oil spray orifice, carries out control using threeway valve arrangement to Air Valve Control chamber to improve response speed.The beneficial effect is that: flexibility ratio processed is big, while being able to achieve the independent control and individual injection of diesel oil and natural gas double-fuel, promotes the response speed of injector, and control precision is high, can realize the two kinds of fuel controls of bavin oil and gas respectively；Realize natural gas being widely used on medium-heavy automobile.
Description
Technical field
The invention belongs to injector technical fields, and in particular to a kind of novel double fuel in-cylinder direct-jet 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
Diesel oil and few part is used, as fuel, mainly to make for satisfaction plus tight emission regulation, current diesel engine using natural gas
Use inlet manifold of the single diesel oil as the high pressure direct injection natural gas in cylinder technology (high pressure co-rail system) or natural gas of fuel as fuel
Spraying technique.
Diesel oil is used to be substantially less than 39% as the burning efficiency of internal combustion engine of single-fuel, with six discharge standard of state
Publication, which gradually increases, while also bringing the increase in post processing cost.In current a small amount of natural gas
Combustion engine is gas-duct jetting, is lighted by spark plug, and efficiency of combustion is lower than 36%, and its unburned CH4 is directly arranged
Out, it is also difficult to meet the emission request gradually promoted.
Diesel engine is needed using newest high-pressure common rail spraying technique, but the diesel oil sprayed is straight with molecule state
It connects to spray into engine chamber and burn, molecule cannot be completely burned, and a part will be caused with the discharge of the state of particle
There are a large amount of molecules in the exhaust gas of diesel engine, and far beyond six discharge standard of state, this needs increases in exhaust steam passage
Particle capture device, reduction is granular material discharged, and which increase costs, can not be complete even if increasing particulate matter capture device
The particulate matter in engine exhaust is eliminated, will lead to pollution；Simultaneously because diesel engine high compression when diesel oil compression ignition characteristic,
It is very high to will lead to diesel oil current political situation portion temperature of burning in engine chamber, the nitrogen in air is caused to be oxidized to form nitrogen oxidation
Object is discharged, and the nitrogen oxides of generation is very big to air pollution, will form acid rain, this increases the device for removing nitrogen oxides again,
Cost will increase much again, and it is difficult to ensure that the discharge of nitrogen oxides is stable always.
The engine of natural gas manifold injection all uses firing device to natural gas igniting, engine compression ratio
It is low, cause the thermal efficiency low with 36%, and natural gas enters in cylinder with air, can in compression process into the gap of cylinder,
Natural gas (CH4) in gap cannot be burned off, and can directly be excluded, will form the pollution to air.
Adjustment with national energy structure and the promotion to emission request, it is traditional to be situated between with gasoline and diesel oil for burning
The internal combustion engine of matter will gradually decrease, and natural gas is abundant in China and global resources, can gradually hold as the alternative fuel of diesel oil
Begin to be applied to automobile market.
Summary of the invention
In order to compensate for the shortcomings of the prior art, the present invention provides a kind of novel double fuel in-cylinder direct-jet injectors.
The present invention is achieved through the following technical solutions:
A kind of novel double fuel in-cylinder direct-jet injector, including case of sprayer, electromagnetic valve for natural gas, diesel oil solenoid valve and valve
Body, the case of sprayer are equipped with electromagnetic valve for natural gas, diesel oil solenoid valve and valve body, valve body and set with case of sprayer junction
There is intermediate, needle-valve and air valve are equipped in the valve body, case of sprayer is equipped with high pressure connection, inlet suction port and diesel oil oil return
Channel, natural gas high pressure air inlet is by enclosure interior air flue and internal connection air flue through the intermediate air flue and valve on intermediate
Oil nozzle air flue on body is connected to natural gas cavity, and is controlled by electromagnetic valve for natural gas, and the high pressure connection is through shell
High-pressure oil duct is connected to intermediate high-pressure oil duct corresponding on intermediate and high-pressure oil duct with high-voltage oil cavity one and needle-valve, and is passed through
Diesel oil solenoid valve is controlled, and the valve body is equipped with natural gas spray orifice, and air valve is equipped with diesel oil spray orifice.
Further, the electromagnetic valve for natural gas is communicated with triple valve, and connectivity part is equipped with the first ball valve, and electromagnetic valve for natural gas is logical
It crosses natural gas armature and controls the first ball guiding the first ball valve of drive, triple valve, which is equipped with, declines oil duct, right on the valve block of triple valve
Oil duct should be declined and be equipped with triple valve control ring band equipped with interface channel, interface channel and decline oil duct connectivity part, interface channel is logical
It crosses fuel-displaced throttle orifice to be connected to threeway valve chamber, threeway valve chamber is connected to oil duct with intermediate corresponding on intermediate by oil duct one and connects
Logical, high pressure connection is connected to by high-pressure oil duct and diesel oil feeding channel with triple valve control ring band, and electromagnetic valve for natural gas passes through back
Oily channel is connected to the return port.
Further, the diesel oil solenoid valve is connected to by oil duct three with oil duct two, and oil duct two passes through diesel oil fuel-displaced throttle orifice
It is connected to oil valve control chamber, oil valve control chamber is connected to by diesel oil feeding throttle orifice with high-pressure oil duct one, and oil duct three passes through connection
Oil duct is connected to diesel oil solenoid valve, and connectivity part is equipped with the second ball valve, and diesel oil solenoid valve controls the second ball guiding by diesel oil armature
The second ball valve is driven, diesel oil solenoid valve is connected to the return port by drainback passage.
Further, it is intracavitary equipped with spring for valve that Air Valve Control is located on the valve body, spring for valve is located at air valve and centre
Between body, natural gas cavity is collectively formed in air valve and valve body, and natural gas cavity is connected to by annulus with oil nozzle air flue, air valve end
Equipped with spray chamber, sealing surface, the natural gas on spray chamber and valve body are equipped between the natural gas cavity and spray chamber of air valve end
Spray orifice connection.
Further, the needle-valve and intermediate junction are equipped with needle-valve set, are equipped with needle valve spring in the oil pocket of needle-valve set lower section,
By being connected to oil duct connection between pressure accumulation annulus and pressure accumulation chamber on needle-valve, the intermediate high-pressure oil duct on intermediate passes through oil
Mouth high-pressure oil duct is connected to high-voltage oil cavity, and high-voltage oil cavity is connected to by oilhole with oil pocket, and high-voltage oil cavity passes through oil-through hole and pressure accumulation
Annulus connection, pressure accumulation chamber are connected to high-voltage oil cavity one, and when needle-valve rises, the diesel oil spray orifice on high-voltage oil cavity one and air valve connects
It is logical.
The beneficial effects of the present invention are: flexibility ratio processed is big, it is able to achieve the independent control and solely of diesel oil and natural gas double-fuel
Vertical injection；The response speed of injector is promoted, control precision is high, can realize the two kinds of fuel controls of bavin oil and gas respectively；
It 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 present invention will be further described below with reference to the drawings.
Accompanying drawing 1 is the structural representation of the present invention；
Attached drawing 2 connect partial sectional view with valve body for intermediate of the present invention；
Attached drawing 3 is that the connection of the high pressure connection on case of sprayer of the present invention is distributed schematic cross-sectional view；
Attached drawing 4 is the connectivity structure schematic diagram of needle-valve on intermediate of the present invention and valve body；
Attached drawing 5 is each oil duct partial sectional view in needle-valve guide sleeve of the present invention region；
Attached drawing 6 is the connection distribution cross-sectional view of case of sprayer upper air connector of the present invention and enclosure interior air flue；
Attached drawing 7 is the connectivity structure schematic diagram of intermediate of the present invention and valve body upper air valve.
In figure, 1 electromagnetic valve for natural gas, 2 natural gas armature, 3 first balls guiding, 4 first ball valves, 5 triple valves, 6 decline oil
Road, 7 triple valve control ring bands, 8 interface channels, 9 valve blocks, 10 fuel-displaced throttle orifices, 11 threeway valve chambers, 12 diesel oil feeding channels, 13
Drainback passage, 14 case of sprayer, 15 diesel oil solenoid valves, 16 diesel oil armature, 17 second balls guiding, 18 second ball valves, 19 connections
Oil duct, 20 oil ducts three, 21 inlet suction ports, 22 enclosure interior air flues, 23 oil return openings, 24 high pressure connections, 25 high-pressure oil ducts, 26 oil ducts
One, 27 housing high pressure oil ducts, 28 intermediate high-pressure oil ducts, 29 high-pressure oil ducts one, 30 intermediates connection oil duct, 31 oil ducts two, 32
Spring for valve, 33 Air Valve Control chambers, 34 oil nozzle high-pressure oil ducts, 35 needle-valve sets, 36 needle valve springs, 37 oil pockets, 38 high-voltage oil cavities, 39
Oil-through hole, 40 oilholes, 41 pressure accumulation annulus, 42 connection oil ducts, 43 pressure accumulation chambers, 44 high-voltage oil cavities one, 45 needle-valves, 46 air valves, 47 valves
Body, 48 diesel oil spray orifices, 49 natural gas spray orifices, 50 inside connection air flues, 51 intermediate air flues, 52 oil nozzle air flues, 53 annulus, 54 days
Right gas cavity, 55 spray chambers, 56 sealing surfaces, 57 intermediates, 58 diesel oil feeding throttle orifices, 59 diesel oil fuel-displaced throttle orifices, 60 oil valves
Control chamber.
Specific embodiment
A kind of novel double fuel in-cylinder direct-jet injector of the present invention is further described below with reference to embodiment.
Attached drawing 1-7 is a kind of specific embodiment of the invention.A kind of novel double fuel in-cylinder direct-jet injector of the invention, packet
Case of sprayer 14, electromagnetic valve for natural gas 1, diesel oil solenoid valve 15 and valve body 47 are included, the case of sprayer 14 is equipped with natural
Pneumoelectric magnet valve 1, diesel oil solenoid valve 15 and valve body 47, valve body 47 and 14 junction of case of sprayer are equipped with intermediate 57, the valve
Needle-valve 45 and air valve 46 are equipped in body 47, case of sprayer 14 is equipped with high pressure connection 24, inlet suction port 21, diesel oil feeding channel
12 and drainback passage 13, natural gas inlet suction port 21 is by enclosure interior air flue 22 and internal is connected to air flue 50 through intermediate 57
On intermediate air flue 51 on valve body 47 oil nozzle air flue 52 and natural gas cavity 54 be connected to, and pass through electromagnetic valve for natural gas 1
It is controlled, the high pressure connection 24 is through housing high pressure oil duct 27 and intermediate high-pressure oil duct 28 corresponding on intermediate 57 and height
Pressure oil road 25 is connected to high-voltage oil cavity 1 and needle-valve 45, and is controlled by diesel oil solenoid valve 15, is set on the valve body 47
There is natural gas spray orifice 49, air valve 46 is equipped with diesel oil spray orifice 48.
Further, the electromagnetic valve for natural gas 1 is communicated with triple valve 5, and connectivity part is equipped with the first ball valve 4, natural gas electromagnetism
Valve 1 controls the first ball guiding 3 by natural gas armature 2 and drives the first ball valve 4, and triple valve 5 is equipped with decline oil duct 6, triple valve 5
Valve block 9 on corresponding decline oil duct 6 be equipped with interface channel 8, interface channel 8 and decline 6 connectivity part of oil duct are equipped with triple valve control
Annulus 7, interface channel 8 are connected to by fuel-displaced throttle orifice 10 with threeway valve chamber 11, and threeway valve chamber 11 passes through oil duct 1 and centre
Corresponding intermediate connection oil duct 30 is connected on body 57, and high pressure connection 24 passes through high-pressure oil duct 25 and diesel oil feeding channel 12 and three
Port valve control ring band 7 is connected to, and electromagnetic valve for natural gas 1 is connected to by drainback passage 13 with oil return opening 23.
Further, the diesel oil solenoid valve 15 is connected to by oil duct 3 20 with oil duct 2 31, and oil duct 2 31 is gone out by diesel oil
Oily throttle orifice 59 is connected to oil valve control chamber 60, and oil valve control chamber 60 is connected by diesel oil feeding throttle orifice 58 and high-pressure oil duct 1
Logical, oil duct 3 20 is connected to by connecting oil duct 19 with diesel oil solenoid valve, and connectivity part is equipped with the second ball valve 18, and diesel oil solenoid valve passes through
Diesel oil armature 16 controls the second ball guiding 17 and drives the second ball valve 18, and diesel oil solenoid valve 15 passes through drainback passage 13 and oil return opening 23
Connection.
Further, it is located in Air Valve Control chamber 33 on the valve body 47 and is equipped with spring for valve 32, spring for valve 32 is located at gas
Between valve 46 and intermediate 57, natural gas cavity 54 is collectively formed in air valve 46 and valve body 47, and natural gas cavity 54 passes through annulus 53
It is connected to oil nozzle air flue 52,46 end of air valve is equipped with spray chamber 55, and natural gas cavity 54 and spray chamber 55 are equipped with sealing surface 56, spray
Chamber 55 is penetrated to be connected to the natural gas spray orifice 49 on valve body 47.
Further, the needle-valve 45 is equipped with needle-valve set 35 with 57 junction of intermediate, and 35 lower section of needle-valve set is equipped with needle-valve bullet
Spring 36 is connected on needle-valve 45 by be connected to oil duct 42 between pressure accumulation annulus 41 and pressure accumulation chamber 43, the centre on intermediate 57
Body high-pressure oil duct 28 is connected to by oil nozzle high-pressure oil duct 34 with high-voltage oil cavity 38, and high-voltage oil cavity 38 passes through oilhole 40 and 37 phase of oil pocket
It is logical, while high-voltage oil cavity 38 is connected to by oil-through hole 39 with pressure accumulation annulus 41, pressure accumulation chamber 43 with high-voltage oil cavity 1, when needle-valve 45
When rising, high-voltage oil cavity 1 is connected to the diesel oil spray orifice 48 on air valve 46.
Further, electromagnetic valve for natural gas 1 controls the opening and closing of ball valve 4, controls air valve by triple valve 5 and valve block 9
46 up and down motion, it is final control natural gas spray orifice 49 and realize open jet or close jet, triple valve control ring band 7 and fuel-displaced
The diameter of throttle orifice 10 can effectively adjust the response speed of opening and closing.
Electromagnetic valve for natural gas 1 controls the raising and lowering of natural gas armature 2, and electromagnetic attracting force natural gas rank is generated after power-up
Iron 2 rises, and after power-off in the case where no electromagnetic force, natural gas armature 2 declines under spring force, natural gas armature
2 raising and lowering will control the raising and lowering of the first ball guiding 3 and the first ball valve 4, the raising and lowering of the first ball valve 4
It will affect the opening and closing of decline oil duct 6, the opening and closing of decline oil duct 6 will affect the pressure and valve block 9 of oil duct 1
Up and down motion, when decline oil duct 6 open when one 26 pressure of oil duct decline, when be lower than certain value when valve block 9 decline, when decline oil
One 26 pressure of oil duct rises when road 6 is closed, and when being higher than certain value, valve block 9 rises.
The pressure of Air Valve Control chamber 33 will affect the raising and lowering of air valve 46, the gas when the decline of 33 pressure of Air Valve Control chamber
Valve 46 rises, and when 33 pressure of Air Valve Control chamber rises, air valve 46 declines, and high pressure oil passes through high-pressure oil duct by high pressure connection 24
25 and diesel oil feeding channel 12, into triple valve control ring band 7, when the pressure of threeway valve chamber 11 and oil duct 1 drops to centainly
It is worth, the pressure in triple valve control ring band 7 pushes valve block 9 to move downward, the high pressure oil outflow in triple valve control ring band 7.Instead
It, when the pressure of threeway valve chamber 11 and oil duct 1 rises to certain value, valve block 9 is moved upwards, high in triple valve control ring band 7
Pressure oil is sealed.The diameter of throttle orifice 10 largely influences valve block in the area and triple valve of triple valve control ring band 7
The up and down motion time.
Natural gas enters case of sprayer 14 by inlet suction port 21, passes through enclosure interior air flue 22, internal connection air flue
50 inflow intermediate air flues 51 and oil nozzle air flue 52, natural gas are distributed in annulus 53 and oil nozzle natural gas cavity with certain pressure
54, it is influenced by sealing surface 56, natural gas cavity 54 is isolated with spray chamber 55 and natural gas spray orifice 49, when electromagnetic valve for natural gas 1
Power-up causes the first ball valve 4 to rise, when causing to decline the pressure decline in the unlatching of oil duct 6 and oil duct 1, by triple valve 5 and valve
The influence of piece 9 causes pressure in Air Valve Control chamber 33 to decline, and air valve 46 rises, and sealing surface 56 generates certain gap, natural gas
Spray chamber 55 is flowed into from natural gas cavity 54, is sprayed finally by natural gas spray orifice 49.
Conversely, causing to decline the closing of oil duct 6 and oil duct 1 when the power-off of electromagnetic valve for natural gas 1 causes the first ball valve 4 to decline
It when pressure rises, is influenced by triple valve 5 and valve block 9, pressure in Air Valve Control chamber 33 is caused to rise, air valve 46 declines, sealing
Sealing is realized in face 56, and the natural gas and spray chamber 55 of natural gas cavity 54 disconnect, and natural gas stops injection, the upper raising of air valve 46
Degree can influence the throttle effect of seat surface sealing area, to influence maximum gas spraying tolerance.
Diesel oil solenoid valve 15 controls the opening and closing of the second ball valve 18, finally controls the up and down motion of needle-valve 45, needle-valve
45 up and down motion finally controls diesel oil spray orifice 48 and realizes unlatching oil spout and close oil spout.For 58 diameter of diesel oil feeding throttle orifice
The response speed of opening and closing can be effectively adjusted with the control of 59 diameter of diesel oil fuel-displaced throttle orifice, diesel oil solenoid valve 15 controls bavin
The raising and lowering of oily armature 16 generates electromagnetic attracting force diesel oil armature 16 and rises, in not electromagnetic force after power-off after power-up
In the case of, diesel oil armature 16 declines under spring force, the raising and lowering of diesel oil armature 16, by control the second ball guiding
17 and second ball valve 18 raising and lowering, the raising and lowering of the second ball valve 18 will affect connection oil duct 19 unlatching and pass
It closes, the opening and closing of connection oil duct 19 will affect the pressure of oil duct 3 20 and oil duct 2 31, the oil when connecting oil duct 19 and opening
The decline of 2 31 pressure of road, when connecting oil duct 19 and closing, 2 31 pressure of oil duct rises.
The pressure of oil valve control chamber 60 will affect the raising and lowering of needle-valve 45, when 60 pressure of oil valve control chamber declines hour hands
Valve 45 rises, and when 60 pressure of oil valve control chamber rises, needle-valve 45 declines, and high pressure oil passes through housing high pressure by high pressure connection 24
Oil duct 27 and high-pressure oil duct 1, diesel oil feeding throttle orifice 58 enters oil valve control chamber 60, then by going out the fuel-displaced throttling of diesel oil
Hole 59 is communicated with oil road 2 31, meanwhile, high pressure oil passes through housing high pressure oil duct 27 and intermediate high pressure by high pressure connection 24
Oil duct 28, oil nozzle high-pressure oil duct 34 enter high-voltage oil cavity 38, and high pressure oil enters oil pocket 37 through oilhole 40 from high-voltage oil cavity 38, simultaneously
High pressure oil enters pressure accumulation annulus 41 by oil-through hole 39 from high-voltage oil cavity 38, then enters pressure accumulation chamber 43 by connection oil duct 42,
High pressure oil in pressure accumulation chamber 43 enters high-voltage oil cavity 1, causes the second ball valve 18 to rise when diesel oil solenoid valve 15 is powered on, causes
When connecting the unlatching of oil duct 19 and the pressure decline of oil duct 2 31, pressure in diesel oil control chamber 60 is caused to decline, needle-valve 45 rises, height
Pressure diesel oil is sprayed from high-voltage oil cavity 1 by diesel oil spray orifice 48.
Conversely, causing to connect the closing of oil duct 19 and oil duct two when the power-off of diesel oil solenoid valve 15 causes the second ball valve 18 to decline
When 31 pressure rise, pressure in diesel oil control chamber 60 is caused to rise, needle-valve 45 declines, by high-voltage oil cavity 1 and diesel oil spray orifice 48
Partition, diesel oil stop injection, and the lifting height of needle-valve 45 can influence the throttle effect of seat surface sealing area, to influence maximum bavin
Oily distributive value.
The present invention is not limited to the above-described embodiments, anyone should learn make under the inspiration of the present invention with the present invention
With same or similar technical solution, fall within the scope of protection of the present invention.
Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (5)
1. a kind of novel double fuel in-cylinder direct-jet injector, including case of sprayer, electromagnetic valve for natural gas, diesel oil solenoid valve and valve
Body, which is characterized in that the case of sprayer is equipped with electromagnetic valve for natural gas, diesel oil solenoid valve and valve body, valve body and injector
Housing junction is equipped with intermediate, and needle-valve and air valve are equipped in the valve body, and case of sprayer is equipped with high pressure connection, air inlet connecting
Head, diesel oil feeding channel and drainback passage, natural gas enter from inlet suction port, are connected to air flue with inside by enclosure interior air flue
Through on intermediate intermediate air flue on valve body oil nozzle air flue and natural gas cavity be connected to, and by electromagnetic valve for natural gas into
The control of row natural gas injection, the high pressure oil enters from high pressure connection, through corresponding centre on housing high pressure oil duct and intermediate
Body high-pressure oil duct and oil nozzle high-pressure oil duct are communicated with high-voltage oil cavity one, are communicated through diesel oil feeding throttle orifice with oil valve control chamber, and
Diesel injection control is carried out by diesel oil solenoid valve, the valve body is equipped with natural gas spray orifice, and air valve is equipped with diesel oil spray orifice.
2. a kind of novel double fuel in-cylinder direct-jet injector according to claim 1, it is characterised in that: the natural pneumoelectric
Magnet valve is communicated with triple valve, and connectivity part is equipped with the first ball valve, and electromagnetic valve for natural gas controls the first ball guiding by natural gas armature
The first ball valve is driven, triple valve is equipped with decline oil duct, and corresponding decline oil duct is equipped with interface channel, connection on the valve block of triple valve
Channel and decline oil duct connectivity part are equipped with triple valve control ring band, and interface channel is connected to by fuel-displaced throttle orifice with threeway valve chamber,
Threeway valve chamber is connected to oil duct with intermediate corresponding on intermediate by oil duct one and air valve control chamber is connected to, and high pressure connection passes through
High-pressure oil duct and diesel oil feeding channel are connected to triple valve control ring band, and diesel oil electromagnet, natural gas electromagnet are logical by oil return
Road is connected to the return port.
3. a kind of novel double fuel in-cylinder direct-jet injector according to claim 1, it is characterised in that: the diesel oil electromagnetism
Valve is connected to by oil duct three with oil duct two, and oil duct two is connected to by diesel oil fuel-displaced throttle orifice with oil valve control chamber, oil valve control chamber
It is connected to by diesel oil feeding throttle orifice with high-pressure oil duct one, oil duct three is connected to by connecting oil duct with diesel oil solenoid valve, connectivity part
Equipped with the second ball valve, diesel oil solenoid valve controls the second ball guiding by diesel oil armature and drives the second ball valve.
4. a kind of novel double fuel in-cylinder direct-jet injector according to claim 1, it is characterised in that: the valve body is upper
Intracavitary equipped with spring for valve in Air Valve Control, for spring for valve between air valve and intermediate, day is collectively formed in air valve and valve body
Right gas cavity, natural gas cavity are connected to by annulus with oil nozzle air flue and natural gas cavity, and air valve end is equipped with spray chamber, naturally
Gas cavity and spray chamber are equipped with sealing surface, and spray chamber is connected to the natural gas spray orifice on valve body.
5. a kind of novel double fuel in-cylinder direct-jet injector according to claim 1, it is characterised in that: the needle-valve is in
Mesosome junction is equipped with needle-valve set, and needle-valve set lower section is equipped with needle valve spring, leads between pressure accumulation annulus and pressure accumulation chamber on needle-valve
The connection of connection oil duct is crossed, the intermediate high-pressure oil duct on intermediate is connected to by oil nozzle high-pressure oil duct with high-voltage oil cavity, high pressure oil
Chamber is communicated by oilhole with oil pocket, while high-voltage oil cavity is connected to by oil-through hole with pressure accumulation annulus, pressure accumulation chamber and high-voltage oil cavity one
Connection, when needle-valve rises, high-voltage oil cavity one is connected to the diesel oil spray orifice on air valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811109490.3A CN109026474B (en) | 2018-09-21 | 2018-09-21 | Novel direct injection injector in dual-fuel cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110645128A (en) * | 2019-11-07 | 2020-01-03 | 江苏科技大学 | Dual-fuel injector |
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| CN109026474B (en) | 2024-08-16 |
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