CN105756827A - Combined electromagnetic fuel oil injection and piezoelectric fuel gas injection mixed fuel injection device - Google Patents
Combined electromagnetic fuel oil injection and piezoelectric fuel gas injection mixed fuel injection device Download PDFInfo
- Publication number
- CN105756827A CN105756827A CN201610250421.9A CN201610250421A CN105756827A CN 105756827 A CN105756827 A CN 105756827A CN 201610250421 A CN201610250421 A CN 201610250421A CN 105756827 A CN105756827 A CN 105756827A
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- Prior art keywords
- control valve
- oil
- valve
- needle
- fuel
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- 239000007924 injection Substances 0.000 title claims abstract description 75
- 238000002347 injection Methods 0.000 title claims abstract description 75
- 239000000446 fuel Substances 0.000 title claims abstract description 62
- 239000000295 fuel oil Substances 0.000 title claims abstract description 48
- 239000002737 fuel gas Substances 0.000 title abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 128
- 238000007789 sealing Methods 0.000 claims description 29
- 239000000567 combustion gas Substances 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 25
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 230000009977 dual effect Effects 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3064—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes
-
- 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
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- 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
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/161—Means for adjusting injection-valve lift
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
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 aims at providing a combined electromagnetic fuel oil injection and piezoelectric fuel gas injection mixed fuel injection device.The mixed fuel injection device comprises a control part, a nozzle part, a fuel gas inlet channel and a fuel oil inlet channel.An electromagnetic valve is utilized for controlling a fuel oil nozzle to achieve fuel oil injection, a piezoelectric element is utilized for controlling a fuel gas nozzle to achieve fuel gas injection, and a pure fuel oil working mode and a dual-fuel working mode can be achieved; the electromagnetic valve is adopted to control motion of a needle valve of the fuel oil nozzle, and the fuel oil injection amount and fuel oil injection timing are controllable; the piezoelectric element is adopted to control motion of a needle valve of the fuel gas nozzle, the needle valve lift is adjustable, and the control accuracy of the fuel gas injection amount and fuel gas injection rate is high; fuel oil at a needle valve cavity of the fuel gas nozzle and fuel oil at needle valve matching parts of the gas nozzle are the same oil, the oil pressures are equal, and static leakage of the fuel oil at the needle valve matching parts is avoided; fuel gas in the fuel gas nozzle is sealed with the fuel oil, the situation that the fuel gas is leaked through the needle valve matching parts is avoided, the fuel gas injection pressure and injection speed are increased, and the power property of an engine and the fuel economical efficiency are improved.
Description
Technical field
The present invention relates to a kind of fuel injection device, specifically dual fuel injection device.
Background technology
Development engine replacing fuel be solve energy shortage and problem of environmental pollution effectively means it
One.Before gaseous fuel becomes have good development because of advantages such as rich reserves, cheap and disposal of pollutants are low
The engine replacing fuel of scape.Although only with the gas engine discharge cleaning of a kind of gaseous fuel, but institute
Low with gaseous fuel energy resource density, fuel consumption is big, uses direction limited；And use diesel oil as light fluid,
Gaseous fuel can switch when using as the dual fuel engine of main fuel between two kinds of fuel flexibly, combustion
Material substitution rate is high, has preferable dynamic property, economy and emission performance.
The gas nozzle of existing in-cylinder direct-jet dual fuel engine many employings electromagnetic control type and fuel nozzle,
The weak point existed has: gas nozzle and fuel nozzle are independently mounted on cylinder cap, size and installation site
Limited by cylinder cap；Gas nozzle utilizes pressure gas jack-up needle-valve, but owing to the compressibility of gas is strong, unfavorable
Controlling in realizing the accurate of needle valve movement, fuel gas injection is unstable；Additionally, during fuel gas injection, along with
The motion combustion gas of needle-valve to the leakage aggravation of electromagnetic valve end, causes gas injection by the gap between needle-valve and valve body
Injection pressure and injection rate reduce, and the stability of fuel gas injection is had harmful effect, have impact on electromotor
Dynamic property and fuel economy.
Summary of the invention
It is an object of the invention to provide the group of dynamic property and the fuel economy that can be effectively improved electromotor
Box-like electromagnetic fuel injection-piezoelectricity jet hybrid fuel jet device.
The object of the present invention is achieved like this:
Combined electromagnetic oil spout of the present invention-piezoelectricity jet hybrid fuel jet device, is characterized in that: include controlling
Crust of the device, injection apparatus shell, needle-valve base, electromagnet portion, piezoelectric, control crust of the device peace
Being contained in injection apparatus shell, control to arrange oil-feed oil duct in crust of the device, needle-valve base is tight by needle-valve body
Gu nut is arranged on below injection apparatus shell, needle-valve base includes electromagnetic base and piezoelectricity base；
Described electromagnet portion include electromagnetic valve coil, armature, the first control valve, the first control valve seat, first
Control valve back-moving spring, the first control valve back-moving spring, the first control valve return spring holder, control piston,
Electromagnetic valve coil and armature are arranged on inside control crust of the device, are armature chamber at armature place, and first controls
Valve upper end is stuck on armature by locating snap ring, and the first control valve is through the first control valve return spring holder and is pressed in
On first control valve seat, between bottom and first control valve seat of the first control valve, form control valve draining chamber,
Draining chamber, the first control valve back-moving spring is formed between first control valve return spring holder and the first control valve seat
Being enclosed within the first control valve, the top of the first control valve back-moving spring withstands on the first control valve return spring holder,
The bottom of the first control valve back-moving spring is stuck in the first control valve, and the first control valve arranges the lower seal conical surface,
Control cavity is set below the first control valve seat, control the upper end of piston be arranged in control cavity and with control
Formed between cavity processed and control chamber, the first control valve return spring holder arranges drain path and the first drain tap,
Drain path connection armature chamber and draining chamber, the first drain tap connection armature chamber, the first control valve seat is arranged
Oil return opening and control valve drain tap, control chamber by the first oil-in connection oil-feed oil controlling in crust of the device
Road, one end connection of oil return opening controls chamber, and the other end of oil return opening is real by the lower sealing surface of the first control valve
Now with connection or the disconnection in draining chamber, control the bottom of piston and connect the first needle-valve return spring holder, first
Needle-valve is arranged in electromagnetic base and is positioned at below the first needle-valve return spring holder, controls to be cased with first on piston
Needle-valve back-moving spring, forms oil holding slot, in the first needle-valve back-moving spring does between the first needle-valve and electromagnetic base
Arranging the 3rd oil-in, oil holding slot is by the 3rd oil-in connection oil-feed oil duct；
Described piezo jet divide include piezoelectric element, conversion piston, the second control valve, the second control valve seat, the
Two control valve return spring holders, gag lever post, the second needle-valve, the second needle-valve back-moving spring, piezoelectric element is installed
Controlling in crust of the device, arranging metallic gasket below piezoelectric element, conversion piston upper end is stuck in metallic gasket
On, below conversion piston, the second control valve is set, the second control valve is arranged on inside the second control valve seat, the
Sealing cone and the lower seal conical surface are set in two control valves, overlap between upper sealing cone and the lower seal conical surface
The second control valve back-moving spring, the second control valve back-moving spring lower end is had to be supported on the second control valve back-moving spring
On seat, forming control valve oil pocket between the second control valve return spring holder and the second control valve seat, second controls
Have the second oil-in communicated with oil-feed oil duct on valve seat, the second control valve return spring holder has second
Drain tap, the second oil-in realizes even on-off by the upper sealing cone of the second control valve and control valve oil pocket
Opening, control valve oil pocket is realized connection by the lower seal conical surface and second drain tap of the second control valve or is disconnected,
Gag lever post is arranged on below the second control valve return spring holder, and the lower end of gag lever post is placed on inside the second needle-valve,
Second needle-valve back-moving spring is enclosed within outside gag lever post, and the lower end of the second needle-valve back-moving spring is supported on the second needle-valve
On, the second needle-valve is arranged in the piezoelectricity base of needle-valve base, shape between the second needle-valve and injection apparatus shell
Become needle chamber, gag lever post and the second needle-valve that central oil passage, central oil passage connection control valve oil pocket are set along axis
And needle chamber, band and pressure tank are set between the second needle-valve and piezoelectricity base, set in injection apparatus shell
Put the 4th oil-in communicated with oil-feed oil duct, band and the 4th oil-in to be connected, on injection apparatus shell
Inlet channel, pressure tank connection inlet channel are set.
The present invention can also include:
1, during piezoelectric element energising, piezoelectric element extends, and the second control valve overcomes the second control valve back-moving spring
Spring force and control valve oil pocket in the hydraulic coupling of fuel oil move downward, the lower sealing surface of the second control valve is pressed in
On second control valve return spring holder, control valve oil pocket and the second drain tap disconnect, control valve oil pocket and second
Oil-in connects, and fuel oil enters pin from oil-feed oil duct by the second oil-in, control valve oil pocket, central oil passage
In valve pocket, fuel oil acts on the second needle-valve, overcomes the spring force of the second needle-valve back-moving spring by the second needle-valve
Jack-up, combustion gas starts injection.
2, during piezoelectric element power-off, the upper sealing surface of the second control valve is pressed in by the second control valve back-moving spring
On two control valve seats, control valve oil pocket and the second oil-in disconnect, control valve oil pocket and the connection of the second drain tap,
Fuel oil in needle chamber leaks in the second drain tap by central oil passage, control valve oil pocket, needle-valve cavity pressure
Reducing, the second needle-valve is pressed to needle-valve base by the second control valve back-moving spring, and combustion gas is not sprayed.
Present invention have an advantage that the present invention utilizes electromagnetic valve to control fuel nozzle and realizes fuel oil injection, utilize
Piezoelectric element controls gas nozzle and realizes fuel gas injection, and fuel injection motility is high, can realize pure fuel oil service
Pattern and double fuel mode of operation；Gas nozzle uses piezoelectric element to control the motion of needle-valve, and needle lift can
Adjusting, fuel gas injection amount and fuel gas injection rate control accuracy are high；Fuel nozzle uses electromagnetic valve to control the fortune of needle-valve
Dynamic, fuel injection amount and fuel oil injection timing are controlled；Gas nozzle controls needle-valve cavity pressure with fuel oil and realizes
The motion of needle-valve, improves combustion gas and backs down the fuel gas injection wild effect that needle-valve causes, can preferably expire
Pedal system jetting stability requirement；Fuel oil at the needle chamber of gas nozzle and pintle nozzle match-ing parts is same oil,
Oil pressure is equal, it is to avoid the fuel oil static leakage at pintle nozzle match-ing parts；Gas nozzle fuel sealing combustion gas, has
It is beneficial to avoid combustion gas to be leaked by pintle nozzle match-ing parts, improves fuel gas injection pressure and injection rate, improve and send out
The dynamic property of motivation and fuel economy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the control partial schematic diagram of the present invention；
Fig. 3 is the nozzle segment schematic diagram of the present invention.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and the present invention be described in more detail:
In conjunction with Fig. 1～3, the combined electromagnetic oil spout of the present invention-piezoelectricity jet hybrid fuel jet device is main
Control part 2, nozzle segment 5, control crust of the device 1, injection apparatus shell 3 including electromagnetism-piezoelectricity, enter
Gas passage 6, oil-feed oil duct 9.Electromagnetism-piezoelectricity controls part 2 by Electromagnetic Control part 10 and piezoelectricity control portion
Dividing 33 compositions, Electromagnetic Control part 10 mainly includes electromagnetic valve coil 11, armature the 12, first control valve
17, first control valve seat the 19, first control valve back-moving spring the 16, first control valve return spring holder 15,
First oil-in 22, control piston 4, control chamber 21, oil return opening 20, drain path the 13, first draining
Mouthfuls 14, control valve drain tap 18, piezoelectricity control part 33 mainly include piezoelectric element 32, metallic gasket 31,
Conversion piston the 30, second control valve the 29, second control valve seat the 27, second control valve back-moving spring 26, the
Two control valve return spring holder the 23, second oil-ins 28, control valve oil pocket the 25, second drain tap 24, electricity
It is internal that magnet valve coil 11 and armature 12 are arranged on control crust of the device 1, and the first control valve 17 upper end is by stop
Ring is stuck on armature 12, and the first control valve 17 lower end is pressed on the first control valve seat 19, and the first control valve is multiple
Spring 16 top, position is pressed on the first control valve return spring holder 15, the first control valve back-moving spring 16 bottom
Being stuck in the first control valve 17, the first control valve 17 arranges the lower seal conical surface, the first control valve back-moving spring
Seat 15 and first uses alignment pin location between control valve seat 19, the first control valve seat 19 with control cavity it
Between use alignment pin location, control piston 4 and control to be formed between cavity to control chamber 21, the first control valve seat
Oil return opening 20 and control valve drain tap 18 are set on 19, the first control valve return spring holder 15 arranges draining
Passage 13 and the first drain tap 14, the first oil-in 22 connects with control chamber 21, oil return opening 20, oil return
Mouth 20 is connected with drain path 13 by the lower seal conical surfaces of the first control valve 17, and drain path 13 passes through
Electromagnetic valve end and the first drain tap 14 connect, and it is internal that piezoelectric element 32 is arranged on control crust of the device 1, pressure
Arranging metallic gasket 31 below electric device 32, conversion piston 30 is stuck on metallic gasket 31, converts piston
30 and the second control valve 29 below be pressed on the second control valve back-moving spring 26, the second control valve 29
Being arranged on the second control valve seat 27 internal, the second control valve back-moving spring 26 lower end is supported on the second control valve
On return spring holder 23, the second control valve 29 arranges sealing cone and the lower seal conical surface, the second control valve
Control valve oil pocket 25, the second control valve seat 27 is formed between return spring holder 23 and the second control valve seat 27
On have the second oil-in 28, the second control valve return spring holder 23 has the second drain tap 24, second
Oil-in 28 is connected with control valve oil pocket 25 by the upper sealing cone of the second control valve 29, control valve oil pocket
25 connect with central oil passage 48, needle chamber 47, and control valve oil pocket 25 is close by the second control valve 29 times
The envelope conical surface and the second drain tap 24 connect.Nozzle segment 5 is by fuel nozzle part 34, gas nozzle part
49, needle-valve body fastening nut 46, needle-valve base 39 form, and fuel nozzle part 34 mainly includes the first pin
Valve the 40, first needle-valve back-moving spring the 35, first needle-valve return spring holder 36, spacing orifice plate the 37, the 3rd enter
Hydraulic fluid port 38, oil holding slot 41, gas nozzle part 49 mainly includes the second needle-valve 43, gag lever post 8, second
Needle-valve back-moving spring 7, central oil passage 48, needle chamber 47, pressure tank the 42, the 4th oil-in 45, sealing
Band 44, it is internal that first needle-valve the 40, second needle-valve 43 is arranged on needle-valve base 39, the first needle-valve 40, the
Two needle-valves 43 are fixed on injection apparatus shell 3 by needle-valve body fastening nut 46, needle-valve base 39 and spray
Using alignment pin location between injection device shell 3, the first needle-valve back-moving spring 35 is arranged on outside control piston 4
Portion, the first needle-valve back-moving spring 35 is supported on the first needle-valve return spring holder 36, the first needle-valve reset bullet
Spring abutment 36 is connected with the first needle-valve 40 and is arranged on spacing orifice plate 37 inside, at the bottom of the first needle-valve 40 and needle-valve
Form oil holding slot 41 between seat 39, between spacing orifice plate 37 and needle-valve base 39, use alignment pin location,
Injection apparatus shell 3 is internal arranges gag lever post 8, and it is internal that gag lever post 8 lower end is enclosed within the second needle-valve 43, and second
Needle-valve back-moving spring 7 is arranged on gag lever post 8 outer end, and the second needle-valve back-moving spring 7 lower end is supported on the second pin
On valve 43, gag lever post 8 and the second needle-valve 43 arrange central oil passage 48 along axis, and central oil passage 48 connects
Control valve oil pocket 25 and needle chamber 47, form needle chamber 47 between the second needle-valve 43 and injection apparatus shell 3,
Form pressure tank 42 between second needle-valve 43 and needle-valve base 39, needle-valve base 39 and the second needle-valve 43 it
Between annular sealing strip 44 is set, band 44 is connected with the 4th oil-in 45.Oil-feed oil duct 9 is along controlling dress
Put shell 1 radially in hybrid fuel jet device, and axially downwardly enter spray along controlling crust of the device 1
In injection device shell 3, oil-feed oil duct 9 separates two-way branch on control crust of the device 1, and a road branch leads to
Crossing the second oil-in 28 to enter in piezoelectricity control part 33, a road branch enters control by the first oil-in 22
In chamber 21 processed, oil-feed oil duct 9 separates two-way branch at injection apparatus shell 3, and a road branch enters by the 3rd
Hydraulic fluid port 38 enters in oil holding slot 41, and a road branch is entered in band 44 by the 4th oil-in 45；Enter
Gas passage 6 is entered in pressure tank 42 by injection apparatus shell 3.
The combined electromagnetic oil spout of the present invention-piezoelectricity jet hybrid fuel jet device mainly includes electromagnetism-piezoelectricity
Control part 2, nozzle segment 5, control crust of the device 1, injection apparatus shell 3, inlet channel 6, enter
Oil oil duct 9, electromagnetism-piezoelectricity controls part 2 and is made up of Electromagnetic Control part 10 and piezoelectricity control part 33,
Nozzle segment 5 is by fuel nozzle part 34, gas nozzle part 49, needle-valve body fastening nut 46, needle-valve
Base 39 forms.First control valve 17 arranges the lower seal conical surface, controls fuel oil draining in chamber 21, the
Two control valves 29 arrange sealing cone and the lower seal conical surface, it is achieved fuel oil turnover oil in control valve oil pocket 25
Switching between road, drain path 13 is connected by electromagnetic valve end and the first drain tap 14, and electromagnetic valve end fills
Full fuel oil, can reduce the shock and vibration that electromagnetic valve armature moves up and down, thus improve dual-coil electromagnetic valve work
Stability, and during fuel oil draining, flow through electromagnetic valve end, take away dual-coil electromagnetic valve heat, play cooling electromagnetic valve
Effect, control valve drain tap 18 vents and flows to the from the gap of the first control valve 17 and the first control valve seat 19
The fuel oil of one control valve 17 bottom, metallic gasket 31 plays the effect of isolation, it is to avoid piezoelectric element 32 contacts
Controlling, to piezoelectricity, the fuel oil that part 33 upwards leaks, the first needle-valve 40 is pressed to by the first needle-valve back-moving spring 35
Needle-valve base 39, the second needle-valve 43 is pressed to needle-valve base 39, needle-valve base by the second needle-valve back-moving spring 7
39 and second arrange annular sealing strip 44, by the 4th oil-in 45 and oil-feed oil duct 9 phase between needle-valve 43
Even, sealing the combustion gas leaked by pintle nozzle match-ing parts, pressure tank 42 plays the effect of stable air pressure, thus reduces
The air pressure fluctuation impact on fuel gas injection.
During dual fuel engine work, combustion gas enters pressure tank 42 from inlet channel 6, and fuel oil is from oil-feed oil
Road 9 enters hybrid fuel jet device, is divided into three tunnels controlling crust of the device 1, leads up to the second oil-feed
Mouth 28 enters piezoelectricity and controls in parts 33, and the first oil-in 22 of leading up to enters and controls chamber 21 and oil return
In mouth 20, a road enters injection apparatus shell 3, and is divided into two-way, a-road-through on injection apparatus shell 3
Crossing the 3rd oil-in 38 and enter in oil holding slot 41, the 4th oil-in 45 of leading up to enters in band 44.
When electromagnetic valve coil 11 is energized, armature 12 drives the first control valve 17 to overcome the first control valve reset bullet
The spring force of spring 16 moves upward, and oil return opening 20 connects with drain path 13, and fuel oil leads to from controlling chamber 21
Cross oil return opening 20, drain path 13 quickly leaks in the first drain tap 14, controls chamber 21 fuel pressure
Reduce rapidly, when pressure is reduced to certain value, oil holding slot 41 acts on the conical surface of the first needle-valve 40
Fuel oil, overcome the spring force of the first needle-valve back-moving spring 35 by the first needle-valve 40 jack-up, fuel oil start spray
Penetrate.During electromagnetic valve coil 11 power-off, the first control valve back-moving spring 16 is by the lower seal of the first control valve 17
Face is pressed in the lower sealing surface of the first control valve seat 19, and oil return opening 20 no longer connects with drain path 13,
Now controlling chamber 21 identical with the fuel pressure in oil holding slot 41, the first needle-valve 40 is at the first needle-valve reset bullet
Pressing to needle-valve base 39 under the effect of spring 35, fuel oil does not sprays.
When piezoelectric element 32 is energized, piezoelectric element 32 extends, and the second control valve 29 overcomes the second control valve multiple
In the spring force of position spring 26 and control valve oil pocket 25, the hydraulic coupling of fuel oil moves downward, the second control valve 29
Lower sealing surface be pressed in the lower sealing surface of the second control valve return spring holder 23, control valve oil pocket 25 is not
Connecting with the second drain tap 24, control valve oil pocket 25 connects with the second oil-in 28 again, and fuel oil is from oil-feed oil
Road 9 enters in needle chamber 47 by the second oil-in 28, control valve oil pocket 25, central oil passage 48, fuel oil
Act on the second needle-valve 43 end face, overcome the spring force of the second needle-valve back-moving spring 7 by the second needle-valve 43
Jack-up, combustion gas starts injection.During piezoelectric element 32 power-off, the second control valve back-moving spring 26 is controlled second
The upper sealing surface of valve 29 processed is pressed on the upper sealing surface of the second control valve seat 27, and control valve oil pocket 25 is no longer
Connecting with the second oil-in 28, control valve oil pocket 25 connects with the second drain tap 24, in needle chamber 47
Fuel oil is leaked in the second drain tap 24 by central oil passage 48, control valve oil pocket 25, and needle chamber 47 is intrinsic pressure
Power reduces, and when pressure is reduced to certain value, the second needle-valve 43 is pressed to by the second control valve back-moving spring 26
Needle-valve base 39, combustion gas is not sprayed.
Combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device has two kinds of mode of operations: the first is
One needle-valve 40 works, and this mode of operation is pure fuel injection mode；The second is that the first needle-valve 40 starts work
Making the second needle-valve 43 to start working, this mode of operation is dual injection mode again, the combustion of fuel nozzle injection
The combustion gas of gas nozzle injection is lighted after oil pressure combustion.
Piezoelectric element 32 is due to piezoelectric effect deformation, and deformation length reliability is high, fuel gas injection rate control accuracy
High；By changing length conduction time, second can be changed with the deformation length of flexible piezoelectric element 32
The lift of control valve 29, controls fuel oil turnover needle chamber 47, therefore, second due to the second control valve 29 again
The maximum lift of needle-valve 43 is adjustable also with the change of length conduction time, thus realizes the control of fuel gas injection amount
System.
During dual fuel engine work, enter the fuel oil of band 44, make the combustion being accumulated in pressure tank 42
Gas by the clearance leakage between the second needle-valve 43 and needle-valve base 39, thus will not avoid fuel combination
The combustion gas static leakage of injection apparatus；During the second needle-valve 43 motion, in pressure tank 42, combustion gas is led to
Cross pintle nozzle match-ing parts upwards to leak, the second needle-valve reset bullet under the fuel oil effect in band 44, will not be leaked to
At spring 7, directly avoid the combustion gas dynamic leakage of hybrid fuel jet device.
As shown in the above description, combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device utilizes electromagnetic valve
Control fuel nozzle and realize fuel oil injection, utilize piezoelectric element to control gas nozzle and realize fuel gas injection, fuel
Injection motility is high, it is possible to achieve pure fuel oil service pattern and double fuel mode of operation, meanwhile, and gas nozzle
Utilize fuel sealing combustion gas, can preferably solve the problem that combustion gas is leaked by pintle nozzle match-ing parts, can be effectively
Improve dynamic property and the fuel economy of electromotor.
Combined electromagnetic oil spout of the present invention-piezoelectricity jet hybrid fuel jet device, sprays gas nozzle and fuel oil
Mouth combines in an injection apparatus, including electromagnetism-piezoelectricity control part, nozzle segment, inlet channel, enters
Oil oil duct etc..Electromagnetism-piezoelectricity control part is made up of Electromagnetic Control part and piezoelectricity control part, nozzle segment
It is made up of fuel nozzle part, gas nozzle part, needle-valve body fastening nut, needle-valve base.Described enters
Oil oil duct is along controlling crust of the device radially in hybrid fuel jet device and axial along controlling crust of the device
Being downwardly in injection apparatus shell, oil-feed oil duct separates two-way branch on control crust of the device, and a road is divided
Propping up and enter in Electromagnetic Control part by the first oil-in, a road branch enters voltage control by the second oil-in
In part processed, oil-feed oil duct separates two-way branch at injection apparatus shell, and a road branch passes through the 3rd oil-in
Entering in oil holding slot, a road branch is entered in band by the 4th oil-in；Inlet channel is filled by injection
Put shell to enter in pressure tank.
Electromagnetic Control part includes electromagnetic valve coil and the first control valve.Electromagnetic valve coil is arranged on control device
Enclosure, arranges armature below electromagnetic valve coil, the first control valve upper end is stuck on armature by locating snap ring,
First control valve lower end is pressed on the first control valve seat, and the first control valve back-moving spring top is pressed in the first control
On valve return spring holder, the first control valve back-moving spring bottom is stuck in the first control valve, and the first control valve sets
Put the lower seal conical surface, control piston and control to be formed between cavity and control chamber, the first oil-in with control chamber,
Oil return opening connects, and oil return opening is connected with drain path by the lower seal conical surface of the first control valve, drain path
Connected by electromagnetic valve end and the first drain tap.
Piezoelectricity control part includes piezoelectric element and the second control valve.Piezoelectric element is arranged on control crust of the device
Inside, arranges metallic gasket below piezoelectric element, conversion piston is stuck on metallic gasket, conversion piston and
Second control valve of lower section is pressed on the second control valve back-moving spring, and the second control valve is arranged on the second control valve
Seat is internal, and the second control valve back-moving spring lower end is supported on the second control valve return spring holder, and second controls
Valve arranges sealing cone and the lower seal conical surface, between the second control valve return spring holder and the second control valve seat
Form control valve oil pocket, the second control valve seat has the second oil-in, on the second control valve return spring holder
Having the second drain tap, the second oil-in is connected with control valve oil pocket by the upper sealing cone of the second control valve,
Control valve oil pocket is connected by the lower seal conical surface and second drain tap of the second control valve.
Fuel nozzle part includes the first needle-valve and the first needle-valve back-moving spring.First needle-valve back-moving spring is installed
Controlling piston exterior, the first needle-valve back-moving spring is supported on the first needle-valve return spring holder, the first needle-valve
Return spring holder and the first needle-valve are connected and are arranged on spacing hole intralaminar part, between the first needle-valve and needle-valve base
Form oil holding slot, oil holding slot and the connection of the 3rd oil-in.
Gas nozzle part includes gag lever post and the second needle-valve.Gag lever post lower end is enclosed within inside the second needle-valve, the
Two needle-valve back-moving springs are arranged on gag lever post outer end, and the second needle-valve back-moving spring lower end is supported on the second needle-valve,
Forming needle chamber between second needle-valve and injection apparatus shell, gag lever post and the second needle-valve arrange center along axis
Oil duct, central oil passage connection control valve oil pocket and needle chamber, form pressure-bearing between the second needle-valve and needle-valve base
Groove, pressure tank connects with inlet channel, arranges annular sealing strip between needle-valve base and the second needle-valve, seals
Band and the 4th oil-in are connected.
Claims (3)
1. combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device, is characterized in that: include controlling dress
Put shell, injection apparatus shell, needle-valve base, electromagnet portion, piezoelectric, control crust of the device and install
In injection apparatus shell, controlling to arrange oil-feed oil duct in crust of the device, needle-valve base is fastened by needle-valve body
Nut is arranged on below injection apparatus shell, and needle-valve base includes electromagnetic base and piezoelectricity base；
Described electromagnet portion include electromagnetic valve coil, armature, the first control valve, the first control valve seat, first
Control valve back-moving spring, the first control valve back-moving spring, the first control valve return spring holder, control piston,
Electromagnetic valve coil and armature are arranged on inside control crust of the device, are armature chamber at armature place, and first controls
Valve upper end is stuck on armature by locating snap ring, and the first control valve is through the first control valve return spring holder and is pressed in
On first control valve seat, between bottom and first control valve seat of the first control valve, form control valve draining chamber,
Draining chamber, the first control valve back-moving spring is formed between first control valve return spring holder and the first control valve seat
Being enclosed within the first control valve, the top of the first control valve back-moving spring withstands on the first control valve return spring holder,
The bottom of the first control valve back-moving spring is stuck in the first control valve, and the first control valve arranges the lower seal conical surface,
Control cavity is set below the first control valve seat, control the upper end of piston be arranged in control cavity and with control
Formed between cavity processed and control chamber, the first control valve return spring holder arranges drain path and the first drain tap,
Drain path connection armature chamber and draining chamber, the first drain tap connection armature chamber, the first control valve seat is arranged
Oil return opening and control valve drain tap, control chamber by the first oil-in connection oil-feed oil controlling in crust of the device
Road, one end connection of oil return opening controls chamber, and the other end of oil return opening is real by the lower sealing surface of the first control valve
Now with connection or the disconnection in draining chamber, control the bottom of piston and connect the first needle-valve return spring holder, first
Needle-valve is arranged in electromagnetic base and is positioned at below the first needle-valve return spring holder, controls to be cased with first on piston
Needle-valve back-moving spring, forms oil holding slot, in the first needle-valve back-moving spring does between the first needle-valve and electromagnetic base
Arranging the 3rd oil-in, oil holding slot is by the 3rd oil-in connection oil-feed oil duct；
Described piezo jet divide include piezoelectric element, conversion piston, the second control valve, the second control valve seat, the
Two control valve return spring holders, gag lever post, the second needle-valve, the second needle-valve back-moving spring, piezoelectric element is installed
Controlling in crust of the device, arranging metallic gasket below piezoelectric element, conversion piston upper end is stuck in metallic gasket
On, below conversion piston, the second control valve is set, the second control valve is arranged on inside the second control valve seat, the
Sealing cone and the lower seal conical surface are set in two control valves, overlap between upper sealing cone and the lower seal conical surface
The second control valve back-moving spring, the second control valve back-moving spring lower end is had to be supported on the second control valve back-moving spring
On seat, forming control valve oil pocket between the second control valve return spring holder and the second control valve seat, second controls
Have the second oil-in communicated with oil-feed oil duct on valve seat, the second control valve return spring holder has second
Drain tap, the second oil-in realizes even on-off by the upper sealing cone of the second control valve and control valve oil pocket
Opening, control valve oil pocket is realized connection by the lower seal conical surface and second drain tap of the second control valve or is disconnected,
Gag lever post is arranged on below the second control valve return spring holder, and the lower end of gag lever post is placed on inside the second needle-valve,
Second needle-valve back-moving spring is enclosed within outside gag lever post, and the lower end of the second needle-valve back-moving spring is supported on the second needle-valve
On, the second needle-valve is arranged in the piezoelectricity base of needle-valve base, shape between the second needle-valve and injection apparatus shell
Become needle chamber, gag lever post and the second needle-valve that central oil passage, central oil passage connection control valve oil pocket are set along axis
And needle chamber, band and pressure tank are set between the second needle-valve and piezoelectricity base, set in injection apparatus shell
Put the 4th oil-in communicated with oil-feed oil duct, band and the 4th oil-in to be connected, on injection apparatus shell
Inlet channel, pressure tank connection inlet channel are set.
Combined electromagnetic oil spout the most according to claim 1-piezoelectricity jet hybrid fuel jet device,
It is characterized in that: during piezoelectric element energising, piezoelectric element extends, and the second control valve overcomes the second control valve to reset
In the spring force of spring and control valve oil pocket, the hydraulic coupling of fuel oil moves downward, the lower sealing surface of the second control valve
Being pressed on the second control valve return spring holder, control valve oil pocket and the second drain tap disconnect, control valve oil pocket with
Second oil-in connection, fuel oil is entered by the second oil-in, control valve oil pocket, central oil passage from oil-feed oil duct
Entering in needle chamber, fuel oil acts on the second needle-valve, overcomes the spring force of the second needle-valve back-moving spring by second
Needle-valve jack-up, combustion gas starts injection.
Combined electromagnetic oil spout the most according to claim 1 and 2-piezoelectricity jet hybrid fuel jet dress
Putting, it is characterized in that: during piezoelectric element power-off, the second control valve back-moving spring is by the upper sealing of the second control valve
Face is pressed on the second control valve seat, and control valve oil pocket and the second oil-in disconnect, and control valve oil pocket and second is let out
Hydraulic fluid port connects, and the fuel oil in needle chamber leaks in the second drain tap by central oil passage, control valve oil pocket, pin
Valve cavity pressure reduces, and the second needle-valve is pressed to needle-valve base by the second control valve back-moving spring, and combustion gas is not sprayed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250421.9A CN105756827B (en) | 2016-04-21 | 2016-04-21 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250421.9A CN105756827B (en) | 2016-04-21 | 2016-04-21 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
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| CN105756827B CN105756827B (en) | 2018-01-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB124642A (en) * | 1918-06-05 | 1919-04-03 | Oswald Wans | Improvements in Devices for the Injection of Liquid Fuels in Internal Combustion Engines. |
| GB603024A (en) * | 1945-11-16 | 1948-06-08 | Alexander Henderson | Improvements in internal combustion engines using liquid fuel or gas alternatively |
| US20090020631A1 (en) * | 2007-07-17 | 2009-01-22 | Denso Corporation | Gaseous fuel injector using liquid fuel as lubricant and pressure-transmitting medium |
| US20130081593A1 (en) * | 2011-09-30 | 2013-04-04 | Caterpillar, Inc. | Single Actuator Fuel Injector for Dual Fuels |
| WO2014144807A1 (en) * | 2012-11-12 | 2014-09-18 | Mcalister Technologies, Llc | Systems and methods for providing motion amplification and compensation by fluid displacement |
| CN206280178U (en) * | 2016-04-21 | 2017-06-27 | 哈尔滨工程大学 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
-
2016
- 2016-04-21 CN CN201610250421.9A patent/CN105756827B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB124642A (en) * | 1918-06-05 | 1919-04-03 | Oswald Wans | Improvements in Devices for the Injection of Liquid Fuels in Internal Combustion Engines. |
| GB603024A (en) * | 1945-11-16 | 1948-06-08 | Alexander Henderson | Improvements in internal combustion engines using liquid fuel or gas alternatively |
| US20090020631A1 (en) * | 2007-07-17 | 2009-01-22 | Denso Corporation | Gaseous fuel injector using liquid fuel as lubricant and pressure-transmitting medium |
| US20130081593A1 (en) * | 2011-09-30 | 2013-04-04 | Caterpillar, Inc. | Single Actuator Fuel Injector for Dual Fuels |
| WO2014144807A1 (en) * | 2012-11-12 | 2014-09-18 | Mcalister Technologies, Llc | Systems and methods for providing motion amplification and compensation by fluid displacement |
| CN206280178U (en) * | 2016-04-21 | 2017-06-27 | 哈尔滨工程大学 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
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| CN105756827B (en) | 2018-01-19 |
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