CN105673257B - Supercharging and non pressurized combined double-pressure electricity fuel gas ejecting device - Google Patents
Supercharging and non pressurized combined double-pressure electricity fuel gas ejecting device Download PDFInfo
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- CN105673257B CN105673257B CN201610111119.5A CN201610111119A CN105673257B CN 105673257 B CN105673257 B CN 105673257B CN 201610111119 A CN201610111119 A CN 201610111119A CN 105673257 B CN105673257 B CN 105673257B
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- control valve
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention is to provide one kind supercharging and non pressurized combined double-pressure electricity fuel gas ejecting device.Combined by a pressurizer of gas and the isostructural voltage control standard gas nozzle of two-phase.The combustion gas of supercharging device supercharging is passed through in one of voltage control standard gas nozzle, non pressurized combustion gas is passed through in another voltage control standard gas nozzle, the gaseous-pressure sprayed into combustion chamber can be changed in engine single cycle, so as to change the mixability of combustion gas and air, coordinate control fuel gas buring characteristic；It is controllable with the supercharging of boost electromagnetic valve control combustion gas, combustion gas supercharging timing, it is possible to achieve the switching of combustion gas boosting jet and combustion gas without boosting jet；With the injection of two piezoelectric elements control two-way combustion gas, fuel gas injection amount and fuel gas injection rate control accuracy are high, can quickly realize the switching of single gas nozzle injection and double gas nozzle injections；With fuel sealing combustion gas, fuel gas injection pressure and injection rate are improved, improves the dynamic property and fuel economy of engine.
Description
Technical field
The present invention relates to a kind of dual fuel engine fuel gas ejecting device, specifically a kind of combined type supercharging-
Non pressurized double piezoelectricity fuel gas ejecting devices.
Background technology
Development engine replacing fuel is that solve energy shortage and problem of environmental pollution effectively one of means.Gas
The advantages that fuel is because of aboundresources, cheap and combustion cleaning is as the engine replacing fuel with good development prospect.
Existing in-cylinder direct-jet fuel gas ejecting device, to authorized pressure, passes through magnetic valve control more using high-pressure pump compressed gas
Fuel gas injection timing, quantitative control are realized in the motion of needle-valve processed, obtain good effects of energy saving and emission reduction, existing weak point
Have：High-pressure pump structure is complicated, the transmission pipeline length from pump end to fuel gas ejecting device, and pressurized combustion gases leakage is serious；Pressurized combustion gases
Injection apparatus can meet combustion gas single cycle inner high voltage or low-pressure fuel injection requirement, but can not realize injection pressure in engine single cycle
Variability requirements；Single injector fuel gas ejecting device matching engine power is limited, it is impossible to while meet engine gas injection control
Fuel gas injection amount demand under system requirement and different capacity；And although two fuel gas ejecting devices can meet that engine gas sprays
It is required that but size and installation site limited by cylinder cap；Fuel gas injection control accuracy requirement is high, using solenoid valve control needle valve movement
Although timing is controllable, magnetic valve is influenceed by hysteresis loop and magnet coil inductance, and the response of valve element is relative to control signal
There is delay, the control accuracy of fuel gas injection rule will be affected；In addition, pass through valve element and valve body with the motion combustion gas of valve element
Between gap leak and aggravate to magnetic valve end, cause fuel gas injection pressure and injection rate to reduce, influence engine power performance
And fuel economy.
The content of the invention
, can be preferably the invention reside in providing one kind to meet to spray pressure variability requirement in engine single cycle
Solve the problems, such as that combustion gas is leaked by pintle nozzle match-ing parts, the supercharging of the dynamic property and fuel economy of engine can be effectively improved
With non pressurized combined double-pressure electricity fuel gas ejecting device.
The object of the present invention is achieved like this：
Including piezoelectricity control section, gas nozzle part and combustion gas compression portion；The gas nozzle part includes two sets
The needle-valve group being made up of needle-valve, gag lever post and needle-valve back-moving spring, two needle-valve groups pass through shared needle-valve base and needle-valve body
Fastening nut is arranged in injection apparatus shell, forms needle chamber between each needle-valve and injection apparatus shell, each needle-valve with
There is pressure tank between needle-valve base, central oil passage is provided among gag lever post；Piezoelectricity control section includes being arranged on outside piezoelectric element
Two piezoelectric elements and two sets of control valves inside shell, two sets of control valves share a control valve return spring holder；Piezoelectric element
The collecting of electrical controls is integrally formed by shell with injection apparatus cage connection with gas nozzle part, and oil inlet is located at outside piezoelectric element
On shell, the oil-feed oil duct being mutually communicated is provided among piezoelectric element shell, control valve return spring holder and injection apparatus shell, is pressed
Oil-feed oil duct on electric device shell connects with two control valves, be provided with control valve return spring holder among two gag lever posts
Central oil passage connection oil duct and drain tap；Combustion gas compression portion includes supercharging device shell, charged piston, pressurization control
Valve, check valve, charged piston are arranged in the valve pocket in supercharging device shell, and charged piston is cased with charged piston and resets bullet
Spring, supercharger control valve are arranged on above charged piston and charged piston epicoele, charged piston and valve are formed between charged piston
Charged piston cavity of resorption is formed between the portion of bottom of chamber, the sidepiece of charged piston cavity of resorption is provided with air inlet, and check valve is arranged at air inlet,
The bottom of charged piston cavity of resorption is provided with gas off-take, and gas off-take is connected by inlet channel I with a pressure tank, supercharging device shell
With piezoelectric element cage connection, the inlet channel II connected with another pressure tank, inlet channel are provided with injection apparatus shell
The II other ends directly connect combustion gas.
The present invention can also include：
1st, there is band between each needle-valve and needle-valve base, oil-feed oil duct connects with two bands.
2nd, the supercharger control valve includes pressurization control valve base, pressurization control valve rod return spring holder, supercharger control valve
Valve rod, electromagnet, electromagnetic valve body, electromagnetic valve coil, armature, supercharger control valve back-moving spring, pressurization control valve base and supercharging
Have a supercharger control valve valve pocket among control valve rod return spring holder, supercharger control valve valve rod be arranged in supercharger control valve valve pocket and
Pressurization control valve rod return spring holder is stretched out in upper end, and supercharger control valve back-moving spring is enclosed on supercharger control valve valve rod, armature with
Supercharger control valve valve rod connects, and electromagnet, electromagnetic valve body, electromagnetic valve coil and armature form the electricity of control supercharger control valve valve rod
Magnet valve, pressurised oil oil-feed oil circuit is provided with pressurization control valve base, being provided with pressurised oil on pressurization control valve rod return spring holder lets out
Oil circuit.
3rd, the control valve is arranged on inside control valve seat, sets sealing ring outside control valve seat, control valve upper end is stuck in gold
Belong on pad, control valve lower end is pressed on control valve back-moving spring, and control valve back-moving spring lower end is supported on control valve and resets bullet
On spring abutment, control valve oil pocket is formed between control valve return spring holder and control valve seat, the oil-feed on the piezoelectric element shell
Oil duct also connected with two control valves be by control valve seat open loop shape oil inlet realize, on control valve return spring holder
There is control valve oil pocket, the drain tap is annular drain tap, and drain tap connects with control valve oil pocket.
4th, oil-feed oil duct is divided into three tunnels in piezoelectric element shell, and wherein two-way respectively enters the annular on two control valve seats
Oil inlet, another way enters injection apparatus shell by control valve return spring holder, and is further divided into two on injection apparatus shell
Road, respectively enter the pressure tank of two needle-valves.
The invention provides a kind of combined type supercharging-non pressurized double piezoelectricity fuel gas ejecting devices, by a pressurizer of gas,
In a fuel gas ejecting device, the combustion gas of supercharging device supercharging is passed through the isostructural voltage control standard gas nozzle combination of two-phase
In one of voltage control standard gas nozzle, non pressurized combustion gas is passed through in another voltage control standard gas nozzle, Ke Yiman
Injection pressure variability requirement in sufficient engine single cycle, meanwhile, using fuel sealing combustion gas, can preferably solve combustion gas and lead to
The problem of crossing pintle nozzle match-ing parts leakage, the dynamic property and fuel economy of engine can be effectively improved.
Combined type supercharging-non pressurized double piezoelectricity fuel gas ejecting devices of the present invention mainly include combustion gas compression portion 1, double pressures
The collecting of electrical controls 18, double gas nozzle parts 13, supercharging device shell 33, control device shell 19, injection apparatus shell 6, enter
Gas passage I8, inlet channel II17, pressurised oil oil-feed oil circuit 2, pressurised oil draining oil circuit 24, oil-feed oil duct 20.Combustion gas plenum
1 is divided to be resetted by charged piston 22, charged piston epicoele 28, charged piston cavity of resorption 32, charged piston back-moving spring 37, charged piston
Spring cavity 34, boost electromagnetic valve coil 25, supercharging armature 38, pressurization control valve rod 26, supercharger control valve back-moving spring 29, air inlet
Mouth 3, pressurized combustion gases outlet 31, supercharger control valve oil pocket 23, pressurization control valve base 36, pressurization control valve rod return spring holder
27th, supercharger control valve drain tap 35, check valve 4, check valve back-moving spring 30 etc. form.Double piezoelectricity control sections 18 are by control valve
Base 7, structure identical piezoelectricity control section I39 and piezoelectricity control section II54 compositions, piezoelectricity control section I39 is by piezoelectricity member
Part I5, metallic gasket I40, control valve I42, control valve seat I43, control valve back-moving spring I46, control valve oil pocket I45, first enter
Hydraulic fluid port 41, drain tap I44 etc. are formed, and piezoelectricity control section II54 is by piezoelectric element II21, metallic gasket II53, control valve
II51, control valve seat II50, control valve back-moving spring II47, control valve oil pocket II48, the second oil inlet 52, drain tap II49 etc.
Composition.Double gas nozzle parts 13 are by needle-valve base 65, needle-valve body fastening nut 12 and structure identical gas nozzle part
I55 and gas nozzle part II67 compositions, it is multiple that gas nozzle part I55 mainly includes the 3rd oil inlet 57, needle-valve I59, needle-valve
Position spring I9, gag lever post I10, central oil passage I11, needle chamber I56, pressure tank I60, band I58, gas nozzle part II67
Mainly include the 4th oil inlet 64, needle-valve II62, needle-valve back-moving spring II16, gag lever post II15, central oil passage II14, needle chamber
II66, pressure tank II61, band II63.Boost electromagnetic valve coil 25 is arranged in electromagnetic valve body, and supercharging armature 38 is positioned at increasing
The lower section of pressure electromagnetic valve coil 25, the upper end of pressurization control valve rod 26 are stuck on supercharging armature 38 by locating snap ring, pressurization control valve rod 26
Lower end is pressed on pressurization control valve base 36 through pressurization control valve rod return spring holder 27, and the right-hand member of check valve 4 is connected by screw
Connect and be fixed on check valve little spring seat, the left end of check valve back-moving spring 30 is stuck in one-way valve seat by check valve big spring seat
On, the left end of check valve 4 is pressed on one-way valve seat by the right-hand member of check valve back-moving spring 30 by check valve little spring seat, piezoelectric element
I5, piezoelectric element II21 are arranged on inside control device shell 19, and control valve seat I43 and control valve seat II50 are stuck in control device
On shell 19, piezoelectric element I5 lower ends set metallic gasket I40, and control valve I42, control valve I42 are set inside control valve seat I43
Upper end is stuck on metallic gasket I40, and control valve I42 lower ends are pressed on control valve back-moving spring I46, control valve back-moving spring I46
Lower end is supported on control valve base 7, and piezoelectric element II21 lower ends set metallic gasket II53, are set inside control valve seat II50
Control valve II51, control valve II51 upper end are stuck on metallic gasket II53, and control valve II51 lower ends are pressed in control valve back-moving spring
On II47, control valve back-moving spring II47 lower ends are supported on control valve base 7, control valve base 7 and injection apparatus shell 6 it
Between using positioning finger setting, gag lever post I10, gag lever post II15 be stuck on injection apparatus shell 6, and gag lever post I10 lower ends are enclosed on pin
Inside valve I59, gag lever post II15 lower ends are enclosed on inside needle-valve II62, and gag lever post I10 outer ends set needle-valve back-moving spring I9, needle-valve
Back-moving spring I9 is supported on needle-valve I59, and gag lever post II15 outer ends set needle-valve back-moving spring II1, needle-valve back-moving spring II16
It is supported on needle-valve II62, using positioning finger setting, needle-valve I59, needle-valve II62 between needle-valve base 65 and injection apparatus shell 6
Inside needle-valve base 65, needle-valve I59, needle-valve II62 are fixed on injection apparatus shell 6 by needle-valve body fastening nut 12
On, pressure tank I60 is formed between needle-valve I59 and needle-valve base 65, pressure tank is formed between needle-valve II62 and needle-valve base 65
II61.Supercharger control valve oil pocket 23, supercharging are formed between pressurization control valve rod return spring holder 27 and pressurization control valve base 36
Oily oil-feed oil circuit 2 is connected by the lower sealing cone of pressurization control valve rod 26 with supercharger control valve oil pocket 23, pressurization control valve oil
Chamber 23 is connected by the upper sealing cone of pressurization control valve rod 26 with pressurised oil draining oil circuit 24, and pressurization control valve base 36 is provided with
Supercharger control valve drain tap 35, the lower end of pressurization control valve base 36 installation charged piston 22, pressurization control valve base 36 and supercharging
Charged piston epicoele 28 is formed between piston 22, charged piston epicoele 28 connects with supercharger control valve oil pocket 23, outside supercharging device
Charged piston back-moving spring chamber 34 is set between shell 33 and the outer end of charged piston 22, and charged piston back-moving spring 37 is arranged on supercharging
Inside piston reset spring chamber 34, charged piston cavity of resorption 32 is set between supercharging device shell 33 and the lower end of charged piston 22, increased
Piston cavity of resorption 32 is pressed to connect air inlet 3 and pressurized combustion gases outlet 31, pressurized combustion gases outlet 31 connects with inlet channel I8.Control valve
Drain tap I44 and drain tap II49 is set on base 7, the first oil inlet 41 is set on control valve seat I43, control valve seat I43 with
Control valve oil pocket I45, gag lever post I10 and needle-valve I59 are formed between control valve base 7 to be co-axially mounted, and along axis, center oil is set
Road I11, forms needle chamber I56 between needle-valve I59 and injection apparatus shell 6, the first oil inlet 41 passes through the upper close of control valve I42
The envelope conical surface is connected with control valve oil pocket I45, and control valve oil pocket I45 is connected by central oil passage I11 with needle chamber I56, control valve
Oil pocket I45 is connected by control valve I42 lower sealing cone with drain tap I44, and the second oil inlet is set on control valve seat II50
Control valve oil pocket II48, gag lever post II15 and needle-valve II62 are formed between 52, control valve seat II50 and control valve base 7 coaxially to pacify
Dress, central oil passage II14 is set along axis, needle chamber II66 is formed between needle-valve II62 and injection apparatus shell 6.Second oil-feed
Mouth 52 is connected by control valve II51 upper sealing cone with control valve oil pocket II48, and control valve oil pocket II48 passes through central oil passage
II14 is connected with needle chamber II66, and control valve oil pocket II48 is connected by control valve II51 lower sealing cone with drain tap II49
It is logical, the 3rd oil inlet 57 and the 4th oil inlet 64 are set on injection apparatus shell 6, set between needle-valve base 65 and needle-valve I59
Annular sealing strip I58, connected with the 3rd oil inlet 57, annular sealing strip II63 be set between needle-valve base 65 and needle-valve II62,
Connected with the 4th oil inlet 64.Fuel gas ejecting device connects with two-way air inlet gas circuit, enters fuel gas injection by air inlet 3 all the way
Device, fuel gas ejecting device is entered by inlet channel II17 all the way.Air inlet 3 is arranged on supercharging device shell 33, air inlet
Mouthfuls 3 are connected by charged piston cavity of resorption 32, pressurized combustion gases outlet 31 with inlet channel I8, inlet channel I8 by supercharging device outside
Shell 33, control device shell 19, injection apparatus shell 6 connect with pressure tank I60.Inlet channel II17 is arranged on outside injection apparatus
On shell 6, inlet channel II17 connects with pressure tank II61.Oil-feed oil duct 20 is along control device shell 19 radially into fuel gas injection
In device, and axially downwardly enter along control device shell 19 in injection apparatus shell 6, oil-feed oil duct 20 is in control device shell
Two-way branch is separated on 19, branch is entered in piezoelectricity control section I39 by the first oil inlet 41 all the way；Branch passes through all the way
Two oil inlets 52 enter in piezoelectricity control section II54；Oil-feed oil duct 20 is divided into two-way shunting on injection apparatus shell 6, all the way
Entered by shunting the 3rd oil inlet 57 in band I58；A-road-through is crossed the 4th oil inlet 64 of shunting and entered in band II63.
The advantage of the invention is that：
By a pressurizer of gas, the isostructural voltage control standard gas nozzle combination of two-phase in a fuel gas ejecting device
It is interior, structure is simplified, reduces installing space；The supercharging of combustion gas is realized using the motion of boost electromagnetic valve control charged piston,
The switching of combustion gas boosting jet and combustion gas without boosting jet can be quickly realized, meets dual fuel engine different capacity to combustion gas
The different requirements of pressure are sprayed, when boost electromagnetic valve coil and piezoelectric element I are successively powered, pressurized combustion gases injection, work as increasing
When pressure electromagnetic valve coil no power, piezoelectric element I, piezoelectric element II are powered, non pressurized fuel gas injection；Controlled using piezoelectric element
The injection of two-way combustion gas is realized in the motion of two needle-valves, and fuel gas injection flexibility is high, can quickly realize single gas nozzle injection and
The switching of double gas nozzle injections, meets different demands of the dual fuel engine different capacity to fuel gas injection amount, when piezoelectricity member
Part I or piezoelectric element II can realize that small-power exports when being powered, can be realized when piezoelectric element I and piezoelectric element II is powered simultaneously
High-power output；When piezoelectric element I and piezoelectric element II work, fuel gas injection rule can be realized by adjusting the moment that is powered
Variable requirements, such as first piezoelectric element I are powered again piezoelectric element II or first piezoelectric elements II energizations can be real when piezoelectric element I is powered again
The order fuel gas injection rule of existing " anxious after first delaying "；The combustion gas of supercharging device supercharging is passed through the gas nozzle of piezoelectric element I controls
In, non pressurized combustion gas is passed through in the gas nozzle of piezoelectric element II controls, it is possible to achieve injection pressure can in engine single cycle
Denaturation requires that such as first boost electromagnetic valve coil electricity, piezoelectric element I is initially powered up again, last piezoelectric element II is initially powered up, or
Person elder generation boost electromagnetic valve coil electricity, again piezoelectric element II are initially powered up, last piezoelectric element I is initially powered up, can be in engine
Change the gaseous-pressure sprayed into combustion chamber in single cycle, so as to change the mixability of combustion gas and air, fuel gas buring characteristic
Flexibility and changeability.It is pressurized using solenoid valve control combustion gas, combustion gas supercharging timing controllable, combustion gas boost pressure and combustion gas charging efficiency
It is high；Needle valve movement is controlled using piezoelectric element, compared with using solenoid valve control needle valve movement, moving-mass is reduced, motion portion
Part is reduced, and response speed is accelerated, and needle lift is adjustable, and fuel gas injection amount and fuel gas injection rate control accuracy are high, pressurized combustion gases spray
It is variable to penetrate rule；Needle-valve cavity pressure is controlled using fuel oil, control accuracy is high, can preferably meet that system jetting stability will
Ask；Using fuel sealing combustion gas, be advantageous to avoid combustion gas from leaking by pintle nozzle match-ing parts, improve fuel gas injection pressure and injection speed
Rate, improve the dynamic property and fuel economy of engine；Fuel oil at needle chamber and pintle nozzle match-ing parts is same oil, oil pressure phase
Deng avoiding the fuel oil static leakage at pintle nozzle match-ing parts.
Brief description of the drawings
Fig. 1 is the overall structure diagram of combined type of the present invention supercharging-non pressurized double piezoelectricity fuel gas ejecting devices；
Fig. 2 is the combustion gas compression portion structural representation of combined type of the present invention supercharging-non pressurized double piezoelectricity fuel gas ejecting devices
Figure；
Fig. 3 is that double piezoelectricity of combined type of the present invention supercharging-non pressurized double piezoelectricity fuel gas ejecting devices control part-structure to show
It is intended to；
Fig. 4 is that double gas nozzle part-structures of combined type of the present invention supercharging-non pressurized double piezoelectricity fuel gas ejecting devices show
It is intended to.
Embodiment
The present invention is described further with reference to legend：
With reference to Fig. 1-4, combined type of the invention supercharging-non pressurized double piezoelectricity fuel gas ejecting devices mainly include combustion gas and are pressurized
Part 1, double piezoelectricity control sections 18, double gas nozzle parts 13, supercharging device shell 33, control device shell 19, injection dress
Put shell 6, inlet channel I8, inlet channel II17, pressurised oil oil-feed oil circuit 2, pressurised oil draining oil circuit 24, oil-feed oil duct 20.
Combustion gas compression portion 1 is resetted by charged piston 22, charged piston epicoele 28, charged piston cavity of resorption 32, charged piston
Spring 37, charged piston back-moving spring chamber 34, boost electromagnetic valve coil 25, supercharging armature 38, pressurization control valve rod 26, supercharging control
Valve back-moving spring 29 processed, air inlet 3, pressurized combustion gases outlet 31, supercharger control valve oil pocket 23, pressurization control valve base 36, supercharging
Control the composition such as valve rod return spring holder 27, supercharger control valve drain tap 35, check valve 4, check valve back-moving spring 30.Supercharging is lived
Plug 22 is designed to that apex area is big, bottom area is small, realizes that combustion gas is pressurized using both ends difference in areas, pressurization control valve rod 26 is set
Sealing cone and lower sealing cone are put, realizes the switching between pressurised oil inlet and outlet of fuel channel, pressurization control in fuel gas ejecting device
The lower end of valve rod 26 sets taper surface, the supercharging oil liquid pressure suffered by the lower sealing surface of balance pressurization control valve rod 26, supercharger control valve
Base 36 is provided with supercharger control valve drain tap 35, vents and is flowed to from the gap of pressurization control valve rod 26 and pressurization control valve base 36
The pressurised oil of the bottom of pressurization control valve rod 26, avoiding pressurised oil from producing upward active force to pressurization control valve rod 26 reduces supercharging
Control the control accuracy of valve rod 26.
Double piezoelectricity control sections 18 are by control valve base 7, structure identical piezoelectricity control section I39 and piezoelectricity control section
II54 is formed, and piezoelectricity control section I39 is by piezoelectric element I5, metallic gasket I40, control valve I42, control valve seat I43, control valve
Back-moving spring I46, control valve oil pocket I45, the first oil inlet 41, drain tap I44 etc. are formed, and piezoelectricity control section II54 is by piezoelectricity
Element II21, metallic gasket II53, control valve II51, control valve seat II50, control valve back-moving spring II47, control valve oil pocket
II48, the second oil inlet 52, drain tap II49 etc. are formed, and sealing cone and lower sealing cone in control valve I42 settings, realize control
Switching in valve oil chamber I45 processed between fuel oil inlet and outlet of fuel channel, sealing cone and lower sealing cone in control valve II51 settings, realize
Switching in control valve oil pocket II48 between fuel oil inlet and outlet of fuel channel, control valve seat I43 and control valve seat II50 are stuck in control device
Between shell 19 and valve base processed 7, control valve seat I43 and control valve seat II50 axial floats are prevented.Metallic gasket I40 and control
The sealing that valve I42 outer ends are set encloses the effect of isolation, avoids piezoelectric element I5 from touching what is leaked upwards from control valve seat I42
The sealing that fuel oil, metallic gasket II53 and control valve seat II50 outer ends are set encloses the effect of isolation, avoids piezoelectric element II21
Touch the fuel oil leaked upwards from control valve seat II50.
Double gas nozzle parts 13 are by needle-valve base 65, needle-valve body fastening nut 12 and structure identical gas nozzle
Part I55 and gas nozzle part II67 compositions, gas nozzle part I55 mainly include the 3rd oil inlet 57, needle-valve I59, pin
Valve back-moving spring I9, gag lever post I10, central oil passage I11, needle chamber I56, pressure tank I60, band I58, gas nozzle part
II67 mainly includes the 4th oil inlet 64, needle-valve II62, needle-valve back-moving spring II16, gag lever post II15, central oil passage II14, pin
Valve pocket II66, pressure tank II61, band II63.Needle-valve back-moving spring I9, needle-valve back-moving spring II16 respectively by needle-valve I59,
Needle-valve II62 presses to needle-valve base 65, and the fuel oil in needle chamber I56, needle chamber II66 plays control needle-valve I59, needle-valve II62 fortune
Dynamic effect, gag lever post I10, gag lever post II15 play a part of limiting needle-valve I59, needle-valve II62 lifts, band I58, close
The combustion gas played a part of sealing with II63 and leaked by pintle nozzle match-ing parts is sealed, pressure tank I60 and pressure tank II61 play stable gas
The effect of pressure, so as to reduce influence of the air pressure fluctuation to fuel gas injection, between needle-valve body fastening nut 12 and injection apparatus shell 6
Using being threadedly coupled and setting sealing ring, the gas in combustion chamber is avoided to enter inside fuel gas ejecting device.
When dual fuel engine works, two-way combustion gas enters fuel gas ejecting device, and combustion gas all the way enters from air inlet 3 and is pressurized
Piston cavity of resorption 32 is pressurized or is not pressurized, and is left after charged piston cavity of resorption 32 by pressurized combustion gases outlet 31, inlet channel
I8 enters in pressure tank I60, and combustion gas all the way is directly entered in pressure tank II61 by inlet channel II17.Fuel oil passes through oil-feed oil
Road 20, radially into fuel gas ejecting device, is divided into three tunnels, a-road-through along control device shell 19 on control device shell 19
The first oil inlet 41 is crossed to enter in piezoelectricity control section I39；Piezoelectricity control section II54 is entered by the second oil inlet 52 all the way
In；One curb oil-feed oil duct 20 enters injection apparatus shell 6, and is divided into two-way on injection apparatus shell 6, passes through the 3rd all the way
Oil inlet 57 enters in band I58, is entered all the way by the 4th oil inlet 64 in band II63.Because the present invention is by one
Supercharging device and two structure identical voltage control standard gas nozzles combine, the mounting means and operation principle of two nozzles
It is identical, now sketch the course of work of supercharging device and one of gas nozzle.
When boost electromagnetic valve coil 25 is powered, supercharging armature 38 drives pressurization control valve rod 26 to overcome supercharger control valve to reset
The spring force of spring 29 moves upwards, and the upper sealing cone of pressurization control valve rod 26 is pressed on pressurization control valve rod return spring holder
On 27 upper sealing cone, supercharger control valve oil pocket 23 no longer connects with pressurised oil draining oil circuit 24, supercharger control valve oil pocket 23
Connected with pressurised oil oil-feed oil circuit 2, pressurised oil enters charged piston from pressurised oil oil-feed oil circuit 2 by supercharger control valve oil pocket 23
In epicoele 28, pressurised oil acts on the top of charged piston 22, overcomes the spring force of charged piston back-moving spring 37 by charged piston
22 push, and the increase of the volume of charged piston epicoele 28, the volume of charged piston cavity of resorption 32 reduces, into the combustion gas of charged piston cavity of resorption 32
Compressed, gaseous-pressure increase.When the spring force of the gaseous-pressure in charged piston cavity of resorption 32 and check valve back-moving spring 30
When being more than the gaseous-pressure in air inlet 3 with joint efforts, check valve 4 moves right, and charged piston cavity of resorption 32 no longer connects with air inlet 3
It is logical, avoid pressurized combustion gases and leaked from air inlet 3, ensure that combustion gas charging efficiency.When boost electromagnetic valve coil 25 powers off, supercharging
Control valve rod 26 moves downward in the presence of supercharger control valve back-moving spring 29, and the lower sealing cone of pressurization control valve rod 26 is tight
It is pressed on the lower sealing cone of pressurization control valve base 36, pressurised oil oil-feed oil circuit 2 no longer connects with supercharger control valve oil pocket 23,
Supercharger control valve oil pocket 23 connects with pressurised oil draining oil circuit 24, and pressurised oil passes through pressurization control valve oil from charged piston epicoele 28
Chamber 23 is leaked into pressurised oil draining oil circuit 24, and pressure reduces in charged piston epicoele 28, and charged piston back-moving spring 37 will be pressurized
Piston 22 jacks up, when the spring force of the gaseous-pressure in charged piston cavity of resorption 32 and check valve back-moving spring 30 make a concerted effort to be less than into
During gaseous-pressure in gas port 3, check valve 4 connects to left movement, charged piston cavity of resorption 32 with air inlet 3, and combustion gas is from air inlet 3
Into fuel gas ejecting device.
When piezoelectric element I5 is powered, piezoelectric element I5 elongations, control valve I42 overcomes control valve back-moving spring I46 spring
The hydraulic coupling of fuel oil moves downward in power and control valve oil pocket I45, and control valve I42 lower sealing surface is pressed on control valve base 7
Lower sealing surface on, control valve oil pocket I45 no longer connects with drain tap I44, and control valve oil pocket I45 connects with the first oil inlet 41
Logical, fuel oil is entered in needle chamber I56 from the first oil inlet 41 by control valve oil pocket I45, central oil passage I11, and fuel oil acts on
On needle-valve I59 end faces, needle-valve back-moving spring I9 spring force is overcome to jack up needle-valve I59, combustion gas starts to spray.Piezoelectric element I5
During power-off, control valve I42 upper sealing cone is pressed on control valve seat I43 upper sealing cone by control valve back-moving spring I46
On, control valve oil pocket I45 no longer connects with the first oil inlet 41, and control valve oil pocket I45 connects with drain tap I44, needle chamber I56
In fuel oil leaked into by central oil passage I11, control valve oil pocket I45 in drain tap I44, in needle chamber I56 pressure reduce, work as pressure
When power is reduced to certain value, needle-valve I59 is pressed to needle-valve base 65 by needle-valve back-moving spring I9, and combustion gas is not sprayed.
Combined type supercharging-non pressurized double piezoelectricity fuel gas ejecting devices have four kinds of mode of operations, are supplied by two kinds of pressure gas
Mode and three kinds of spray regime compositions, i.e., by boost electromagnetic valve coil 25, piezoelectric element I5, piezoelectric element II21 break-makes electrically
Difference produces four kinds of mode of operations：The first mode of operation is that piezoelectric element I5 or piezoelectric element II21 is powered, i.e., single injector sprays
Penetrate non pressurized combustion gas；Second of mode of operation is that first boost electromagnetic valve coil 25 is powered, piezoelectric element I5 is powered again, i.e. single injector
Spray pressurized combustion gases；The third mode of operation is that piezoelectric element I5 and piezoelectric element II21 are powered, i.e., twin-jet nozzle sprays non-increasing
Compression ignition gas；4th kind of mode of operation be first boost electromagnetic valve coil 25 be powered then piezoelectric element I5 and piezoelectric element II21 all
It is powered, i.e., a nozzle injection pressurized combustion gases, a nozzle spray non pressurized combustion gas.Tune can be passed through in the third operational mode
At the time of whole two nozzles start to spray non pressurized combustion gas, different non pressurized fuel gas injection rules is realized, such as piezoelectric element I5
Be initially powered up, piezoelectric element II21 is initially powered up again, or first piezoelectric element II21 is initially powered up, piezoelectric element I5 starts to lead to again
Electricity, the non pressurized fuel gas injection rule of order of " anxious after first delaying " can be achieved.Can be by adjusting two under the 4th kind of mode of operation
At the time of nozzle starts to spray combustion gas, different pressure gas jet laws is realized, meets injection pressure in engine single cycle
Variability requirements, such as first boost electromagnetic valve coil 25 is powered, piezoelectric element I5 is initially powered up again, last piezoelectric element II21 starts
It is powered, or first boost electromagnetic valve coil 25 is powered, piezoelectric element II21 is initially powered up again, last piezoelectric element I5 starts to lead to
Electricity, the gaseous-pressure sprayed into combustion chamber can be changed in engine single cycle, so as to change the mixability of combustion gas and air,
Fuel gas buring characteristic flexibility and changeability.
Piezoelectric element I5, piezoelectric element II21 are due to piezo-electric effect deformation, and deformation length reliability is high, fuel gas injection rate control
Precision height processed.By changing conduction time length, can with flexible modulation piezoelectric element I5, piezoelectric element II21 deformation length,
Change control valve I42, control valve II51 lift, and due to control valve I42 control fuel oil disengaging needle chamber I56, control valve
II51 control fuel oil disengaging needle chamber II66, therefore, needle-valve I59, needle-valve II62 maximum lift are also with conduction time length
Change it is adjustable, so as to realize the control of fuel gas injection amount.According to solenoid valve control needle-valve I59, needle-valve II62 motion, because
Magnetic valve is influenceed by hysteresis loop and magnet coil inductance, and the response of valve element has delay, fuel gas injection relative to control signal
The control accuracy of rule will be affected.And response speed requirement is less than response speed needed for fuel gas injection rule needed for combustion gas supercharging
Degree requires that the motion for controlling charged piston 22 using boost electromagnetic valve coil 25 can meet combustion gas pressurization control required precision,
Realize higher combustion gas charging efficiency.
When dual fuel engine works, needle chamber I56, the fuel oil in needle chamber II66 and band I58, band II63
In fuel oil be same oil, oil pressure is equal, avoids the fuel oil static leakage at pintle nozzle match-ing parts.Into charged piston cavity of resorption 32
In gaseous-pressure it is relatively low, the combustion gas leaked upwards by the gap between charged piston 22 and supercharging device shell 33 is few, and
In the presence of the long mating band of charged piston couple and charged piston back-moving spring chamber 34, the combustion gas of combustion gas compression portion 1 is let out
Leakage quantity can almost be ignored.During charged piston 22 moves, the pressurized combustion gases of charged piston cavity of resorption 32 pass through charged piston
22 couples leak upwards, and due to the long mating band of charged piston couple, combustion gas can seldom leak into charged piston back-moving spring chamber
34, reduce the leakage rate of pressurized combustion gases, and that fraction combustion gas for leaking into charged piston back-moving spring chamber 34 is leaking into
It will not continue to leak upwards in the presence of pressurised oil in charged piston back-moving spring chamber 34, avoid the further of pressurized combustion gases
Leakage.Into band I58, band II63 fuel oil, the combustion gas for making to be accumulated in pressure tank I60, pressure tank II61 will not
By the clearance leakage between needle-valve I59, needle-valve II62 and the needle-valve II62 of needle-valve base 65, so as to avoid fuel gas ejecting device
Combustion gas static leakage.Needle-valve I59, needle-valve II62 move during, in pressure tank I60, pressure tank II61 combustion gas pass through pin
Valve coupling leaks upwards, will not be leaked under the effect of fuel oil in band I58, band II63 needle-valve back-moving spring I9,
At needle-valve back-moving spring II16, the combustion gas dynamic leakage of fuel gas ejecting device is directly avoided.
As shown in the above description, combined type supercharging-non pressurized double piezoelectricity fuel gas ejecting device courses of work are by supercharging electromagnetism
Valve controls the supercharging of combustion gas by charged piston, and combustion gas boost pressure and combustion gas charging efficiency are high, can quickly realize that combustion gas increases
Pressure injection and switching of the combustion gas without boosting jet, meet that dual fuel engine different capacity will to the difference of fuel gas injection pressure
Ask；The motion of two needle-valves is controlled to realize the injection of two-way combustion gas, fuel gas injection amount and the control of fuel gas injection rate by two piezoelectric elements
Precision is high, and fuel gas injection flexibility is high, can quickly realize the switching of single gas nozzle injection and double gas nozzle injections, meet
Different demands and fuel gas injection rule variability requirements of the different capacity to fuel gas injection amount；Meanwhile using fuel sealing combustion gas,
Can preferably solve the problems, such as that combustion gas is leaked by pintle nozzle match-ing parts, the dynamic property and fuel economy of engine can be effectively improved
Property.
Claims (5)
1. one kind supercharging and non pressurized combined double-pressure electricity fuel gas ejecting device, including piezoelectricity control section, gas nozzle part
With combustion gas compression portion；It is characterized in that：The gas nozzle part includes two sets by needle-valve, gag lever post and needle-valve back-moving spring group
Into needle-valve group, two needle-valve groups are arranged in injection apparatus shell by shared needle-valve base and needle-valve body fastening nut,
Needle chamber is each formed between needle-valve and injection apparatus shell, there is pressure tank between each needle-valve and needle-valve base, in gag lever post
Between be provided with central oil passage；Piezoelectricity control section is included installed in two piezoelectric elements of piezoelectric element enclosure and two sets of controls
Valve, two sets of control valves share a control valve return spring holder；Piezoelectric element shell and injection apparatus cage connection are by electric control
Part is integrally formed with gas nozzle part, and oil inlet is located on piezoelectric element shell, and piezoelectric element shell, control valve reset bullet
It is provided with the oil-feed oil duct being mutually communicated among spring abutment and injection apparatus shell, oil-feed oil duct and two controls on piezoelectric element shell
Valve processed is connected, and the oil duct and drain tap connected with the central oil passage among two gag lever posts is provided with control valve return spring holder；
Combustion gas compression portion includes supercharging device shell, charged piston, supercharger control valve, check valve, and charged piston is arranged on supercharging and filled
Put in the valve pocket in shell, charged piston back-moving spring is cased with charged piston, supercharger control valve is arranged on above charged piston
And charged piston epicoele is formed between charged piston, charged piston cavity of resorption, supercharging are formed between charged piston and valve pocket bottom
The sidepiece of piston cavity of resorption is provided with air inlet, and check valve is arranged at air inlet, and the bottom of charged piston cavity of resorption is provided with gas off-take, goes out
Air flue is connected by inlet channel I with a pressure tank, supercharging device shell and piezoelectric element cage connection, injection apparatus shell
On be provided with the inlet channel II connected with another pressure tank, the inlet channel II other ends directly connect combustion gas.
2. supercharging according to claim 1 and non pressurized combined double-pressure electricity fuel gas ejecting device, it is characterized in that：Each pin
There is band between valve and needle-valve base, oil-feed oil duct connects with two bands.
3. supercharging according to claim 1 or 2 and non pressurized combined double-pressure electricity fuel gas ejecting device, it is characterized in that：Institute
State supercharger control valve include pressurization control valve base, pressurization control valve rod return spring holder, supercharger control valve valve rod, electromagnet,
Electromagnetic valve body, electromagnetic valve coil, armature, supercharger control valve back-moving spring, pressurization control valve base and pressurization control valve rod reset
There is supercharger control valve valve pocket among spring base, supercharger control valve valve rod is arranged in supercharger control valve valve pocket and supercharging is stretched out in upper end
Valve rod return spring holder is controlled, supercharger control valve back-moving spring is enclosed on supercharger control valve valve rod, armature and supercharger control valve valve
Bar connects, and electromagnet, electromagnetic valve body, electromagnetic valve coil and armature form the magnetic valve of control supercharger control valve valve rod, supercharging control
Pressurised oil oil-feed oil circuit is provided with valve base processed, pressurised oil draining oil circuit is provided with pressurization control valve rod return spring holder.
4. supercharging according to claim 1 or 2 and non pressurized combined double-pressure electricity fuel gas ejecting device, it is characterized in that：Institute
State control valve to be arranged on inside control valve seat, sealing ring is set outside control valve seat, control valve upper end is stuck on metallic gasket, control
Valve lower end is pressed on control valve back-moving spring, and control valve back-moving spring lower end is supported on control valve return spring holder, control valve
Control valve oil pocket is formed between return spring holder and control valve seat, the oil-feed oil duct on the piezoelectric element shell also with two controls
Valve processed connection be by control valve seat open loop shape oil inlet realize there is control valve oil pocket on control valve return spring holder,
The drain tap is annular drain tap, and drain tap connects with control valve oil pocket.
5. supercharging according to claim 3 and non pressurized combined double-pressure electricity fuel gas ejecting device, it is characterized in that：The control
Valve processed is arranged on inside control valve seat, sets sealing ring outside control valve seat, control valve upper end is stuck on metallic gasket, under control valve
On control valve back-moving spring, control valve back-moving spring lower end is supported on control valve return spring holder side pressure, and control valve resets
Control valve oil pocket is formed between spring base and control valve seat, the oil-feed oil duct on the piezoelectric element shell also with two control valves
Connection be by control valve seat open loop shape oil inlet realize there is control valve oil pocket on control valve return spring holder, it is described
Drain tap is annular drain tap, and drain tap connects with control valve oil pocket.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610111119.5A CN105673257B (en) | 2016-02-29 | 2016-02-29 | Supercharging and non pressurized combined double-pressure electricity fuel gas ejecting device |
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| CN201610111119.5A CN105673257B (en) | 2016-02-29 | 2016-02-29 | Supercharging and non pressurized combined double-pressure electricity fuel gas ejecting device |
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| CN105673257B true CN105673257B (en) | 2017-11-17 |
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| FI112527B (en) * | 1999-12-16 | 2003-12-15 | Waertsilae Finland Oy | An injection valve |
| US6270024B1 (en) * | 2000-01-12 | 2001-08-07 | Woodward Governor Company | Hydraulically actuated fuel injector cartridge and system for high pressure gaseous fuel injection |
| FI123513B (en) * | 2010-12-02 | 2013-06-14 | Waertsilae Finland Oy | Fuel supply unit, method for operating it and combustion engine |
| CN204704029U (en) * | 2015-06-28 | 2015-10-14 | 贵州华烽电器有限公司 | Combination electric controlled injection valve |
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Effective date of registration: 20200924 Address after: Room 202, building 10, Longhu, Chanba 1st Road, Weiyang District, Xi'an City, Shaanxi Province Patentee after: Xi'an Jinzhong Electromechanical Engineering Co., Ltd Address before: 150001 Heilongjiang, Nangang District, Nantong street,, Harbin Engineering University, Department of Intellectual Property Office Patentee before: HARBIN ENGINEERING University |
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