CN105756829A - Combined mechanical fuel oil injection and pressurizing piezoelectric fuel gas injection mixed fuel injection device - Google Patents
Combined mechanical fuel oil injection and pressurizing piezoelectric fuel gas injection mixed fuel injection device Download PDFInfo
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- CN105756829A CN105756829A CN201610250441.6A CN201610250441A CN105756829A CN 105756829 A CN105756829 A CN 105756829A CN 201610250441 A CN201610250441 A CN 201610250441A CN 105756829 A CN105756829 A CN 105756829A
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- Prior art keywords
- oil
- control valve
- valve
- needle
- fuel
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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
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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
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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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- 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
- F02M21/026—Lift valves, i.e. stem operated valves
- F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
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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
- 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
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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
- 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
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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
- 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
- F02M61/1866—Valve seats or member ends having multiple cones
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/44—Valves, e.g. injectors, with valve bodies arranged side-by-side
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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
Abstract
The invention aims at providing a combined mechanical fuel oil injection and pressurizing piezoelectric fuel gas injection mixed fuel injection device. The mixed fuel injection device comprises a fuel gas pressurizing part, a pressure adjusting spring, a piezoelectric control part, a mechanical nozzle, a fuel gas nozzle, a fuel gas inlet channel, a fuel oil inlet channel and the like. A pressurizing electromagnetic valve is adopted by the fuel gas pressurizing part to control motion of a pressurizing piston to achieve fuel gas pressurization, fuel gas pressurizing timing is controllable, switching of fuel gas pressurizing injection and fuel gas non-pressurizing injection can be rapidly achieved, and the different requirements of different powers of a dual-fuel engine on fuel gas injection pressure are met; the mechanical nozzle is used for achieving fuel oil injection, a piezoelectric element is adopted by the piezoelectric control part to control the fuel gas nozzle to achieve fuel gas injection, the flexibility of fuel injection is high, and switching of pure fuel oil injection and fuel oil and fuel gas dual-fuel injection can be achieved; fuel oil in a needle valve cavity of the fuel gas nozzle and fuel oil at needle valve matching parts of the fuel 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.
Description
Technical field
The present invention relates to a kind of fuel injection device, specifically dual fuel engine fuel injection dress
Put.
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.
Existing in-cylinder direct-jet dual fuel engine many employings electromagnetic gas nozzle and Mechanical nozzle realize double
Fuel sprays, and combustion gas supercharging many employings high-pressure pump compressed gas has to authorized pressure, the weak point existed:
Gas nozzle and Mechanical nozzle are independently mounted on cylinder cap, and size and installation site are limited by cylinder cap；High pressure
Pump configuration is complicated, and the transmission pipeline from pump end to gas nozzle is long, and pressurized combustion gases exists certain leakage；Combustion
Gas jets utilizes pressure gas jack-up needle-valve, but owing to the compressibility of gas is strong, is unfavorable for realizing needle valve movement
Accurate control, fuel gas injection is unstable；Additionally, during fuel gas injection, along with the motion combustion gas of needle-valve
By the gap between needle-valve and valve body to the leakage aggravation of electromagnetic valve end, cause fuel gas injection pressure and injection speed
Rate reduces, and the stability of fuel gas injection is had harmful effect, have impact on engine power performance and fuel warp
Ji property.
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 hydraulic injection-supercharging piezoelectricity jet hybrid fuel jet device.
The object of the present invention is achieved like this:
Combined mechanical oil spout of the present invention-supercharging piezoelectricity jet hybrid fuel jet device, is characterized in that:
Including combustion gas compression portion, injection apparatus shell, control crust of the device, needle-valve base, piezo jet
Partly, mechanical injection part, needle-valve base is arranged on below injection apparatus shell by needle-valve fastening nut,
Control crust of the device and install in injection apparatus shell, control to arrange oil-feed oil duct, described needle-valve in crust of the device
Base includes piezoelectricity base and mechanical pedestal；
Described combustion gas compression portion includes pressurizer shell, supercharger control valve, boost electromagnetic valve coil, increases
Pressure armature, supercharger control valve back-moving spring, supercharger control valve return spring holder, pressurization control valve base, increasing
Pressure piston, check valve, pressurizer shell is arranged on above control crust of the device, pressurizer shell sets
Putting pressurised oil oil-in, pressurised oil drain tap, air inlet, boost electromagnetic valve coil is arranged on outside pressurizer
In shell, supercharging armature is positioned at below boost electromagnetic valve coil, and the upper end of supercharger control valve is stuck in by locating snap ring
On supercharging armature, the lower end of supercharger control valve is through the supercharger control valve return spring holder pressure below supercharging armature
On pressurization control valve base, supercharger control valve arranges sealing cone and the lower seal conical surface, pressurization control
Forming supercharger control valve oil pocket between valve return spring holder and pressurization control valve base, pressurised oil oil-in passes through
The lower seal conical surface of supercharger control valve connects with supercharger control valve oil pocket, and supercharger control valve oil pocket passes through supercharging control
The upper sealing cone of valve processed connects with pressurised oil drain tap, and pressurization control valve base has supercharger control valve draining
Mouthful, charged piston is arranged on the lower section of pressurization control valve base, between pressurization control valve base and charged piston
Forming charged piston epicoele, charged piston epicoele connects with supercharger control valve oil pocket, pressurizer shell and increasing
Forming charged piston back-moving spring chamber between in the middle part of pressure piston, charged piston back-moving spring is placed on charged piston
And it is positioned at charged piston back-moving spring intracavity portion, between pressurizer shell and charged piston lower end, supercharging is set
Piston cavity of resorption, check valve is arranged in pressurizer shell, and the import of check valve is connected with air inlet, single
To the outlet charged piston cavity of resorption of valve, pressurized combustion gases outlet is set below charged piston cavity of resorption,
Described piezo jet part includes piezoelectric element, conversion piston, control valve, control valve seat, control valve
Return spring holder, gag lever post, the second needle-valve, needle-valve back-moving spring, piezoelectric element is arranged on outside control device
In shell, arranging metallic gasket below piezoelectric element, conversion piston upper end is stuck on metallic gasket, converts piston
Lower section control valve is set, control valve is arranged on inside control valve seat, control valve is arranged sealing cone and under
Sealing cone, is cased with control valve back-moving spring between upper sealing cone and the lower seal conical surface, and control valve resets
Lower spring end is supported on control valve return spring holder, is formed between control valve return spring holder and control valve seat
Control valve oil pocket, control valve seat has the first oil-in, control valve return spring holder has drain tap,
First oil-in realizes connecting or disconnecting with control valve oil pocket by the upper sealing cone of control valve, controls valve oil
Chamber realizes connecting or disconnecting with drain tap by the lower seal conical surface of control valve, and it is multiple that gag lever post is arranged on control valve
Below the spring base of position, the lower end of gag lever post is placed on inside the second needle-valve, and needle-valve back-moving spring is enclosed within outside gag lever post
Portion, the lower end of needle-valve back-moving spring is supported on the second needle-valve, and the second needle-valve is arranged on the piezoelectricity of needle-valve base
In base, forming needle chamber between the second needle-valve and injection apparatus shell, gag lever post and the second needle-valve are along axis
Arranging central oil passage, central oil passage connection control valve oil pocket and needle chamber, between the second needle-valve and piezoelectricity base
Annular sealing strip and pressure tank are set, the 3rd oil-in communicated with oil-feed oil duct are set in injection apparatus shell,
Band and the 3rd oil-in are connected, and injection apparatus shell arranges inlet channel, and pressure tank is led to by air inlet
Road connection pressurized combustion gases outlet；
Described mechanical injection part includes regulating screw, upper tappet, lower tappet, pressure spring, the first needle-valve,
Upper tappet is arranged in control crust of the device, and lower tappet is arranged in injection apparatus shell, sets above upper tappet
Put regulation screw, pressure spring is installed between upper tappet and lower tappet, suppress spring position and form pressure regulation
Spring cavity, controls to arrange oil return opening on crust of the device, and oil return opening communicates with pressure spring chamber, the first needle-valve peace
It is contained in the mechanical pedestal of needle-valve base and is positioned at below tappet, being formed between the first needle-valve and mechanical pedestal and contain
Oil groove, arranges the second oil-in communicated with oil-feed oil duct, oil holding slot and the second oil-feed in injection apparatus shell
Mouth communicates.
The present invention can also include:
1, during boost electromagnetic valve coil electricity, supercharging armature drives supercharger control valve to overcome supercharger control valve to reset
The spring force of spring moves upward, and the upper sealing cone of supercharger control valve is pressed in supercharger control valve return spring holder
On, supercharger control valve oil pocket disconnects with pressurised oil drain tap, and pressurised oil oil-in is with supercharger control valve oil pocket even
Logical, pressurised oil enters charged piston epicoele from pressurised oil oil-in by supercharger control valve oil pocket, pressurised oil
Act on charged piston top, overcome the spring force of charged piston back-moving spring to press under charged piston, supercharging
Piston upper chamber volume increases, and charged piston cavity of resorption volume reduces, and the combustion gas entering charged piston cavity of resorption is compressed；
When the gaseous-pressure in charged piston cavity of resorption and when making a concerted effort to be more than the gaseous-pressure in air inlet of check valve, single
Closing to valve, charged piston cavity of resorption disconnects with air inlet；During boost electromagnetic valve coil blackout, supercharger control valve
Moving downward under the effect of supercharger control valve back-moving spring, the lower seal conical surface of supercharger control valve is pressed in supercharging
On control valve base, pressurised oil oil-in disconnects with supercharger control valve oil pocket, supercharger control valve oil pocket and supercharging
Oil drain tap connection, pressurised oil leaks into pressurised oil drain tap from charged piston epicoele by supercharger control valve oil pocket
In, on charged piston, cavity pressure reduces, and charged piston back-moving spring is by charged piston jack-up, when supercharging is lived
Gaseous-pressure in plug cavity of resorption and when making a concerted effort to be less than the gaseous-pressure in air inlet of check valve, check valve is opened,
Charged piston cavity of resorption connects with air inlet.
2, during piezoelectric element energising, piezoelectric element extends, and control valve overcomes the spring force of control valve back-moving spring
Moving downward with the hydraulic coupling of fuel oil in control valve oil pocket, the lower seal conical surface of control valve is pressed in control valve and resets
On spring base, control valve oil pocket and drain tap disconnect, and control valve oil pocket connects with the first oil-in, fuel oil from
Oil-feed oil duct is entered in needle chamber by the first oil-in, control valve oil pocket, central oil passage, and fuel oil acts on
On second needle-valve end face, overcoming the spring force of needle-valve back-moving spring by the second needle-valve jack-up, combustion gas starts injection；
During piezoelectric element power-off, the upper sealing cone of control valve is pressed on control valve seat by control valve back-moving spring,
Control valve oil pocket and the first oil-in disconnect, and control valve oil pocket connects with drain tap, and the fuel oil in needle chamber leads to
Cross central oil passage, control valve oil pocket leaks in drain tap, and needle-valve cavity pressure reduces, control valve back-moving spring
Second needle-valve is pressed to needle-valve base, and combustion gas is not sprayed.
Present invention have an advantage that utilizing boost electromagnetic valve to control charged piston realizes the supercharging of combustion gas, combustion gas
Boost pressure and combustion gas charging efficiency are high, can quickly realize combustion gas boosting jet and combustion gas without boosting jet
Switching, meets the different requirements to fuel gas injection pressure of the dual fuel engine different capacity；Mechanical type is utilized to spray
Mouth realizes fuel oil injection, utilizes piezoelectric element to control gas nozzle and realizes fuel gas injection, fuel injection motility
Height, can realize pure fuel oil service pattern and oil and gas double fuel mode of operation；Gas nozzle uses piezoelectricity unit
Part controls the motion of needle-valve, and needle lift is adjustable, and fuel gas injection amount and fuel gas injection rate control accuracy are high；Machine
Tool formula nozzle can act on the pressure of pressure spring by changing packing ring number change pressure regulating screw, thus changes
The pretightning force of modified tone pressing spring, changes fuel-injection pressure；Gas nozzle fuel oil controls needle-valve cavity pressure
Realize the motion of needle-valve, improve combustion gas and back down the fuel gas injection wild effect that needle-valve causes, can be preferable
Ground meets system jetting stability requirement；Long mating band and increasing is used between charged piston and pressurizer shell
Pressure piston reset spring chamber, it is to avoid gas leakage, improves the stability of pressurizer of gas work；Combustion gas
Fuel oil at the needle chamber of nozzle and pintle nozzle match-ing parts is same oil, and oil pressure is equal, it is to avoid at pintle nozzle match-ing parts
Fuel oil static leakage；Gas nozzle fuel sealing combustion gas, is conducive to avoiding combustion gas to be let out by pintle nozzle match-ing parts
Leakage, improves fuel gas injection pressure and injection rate, improves dynamic property and the fuel economy of electromotor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of combustion gas compression portion of the present invention；
Fig. 3 is the structural representation of piezoelectricity control part of the present invention；
Fig. 4 is the nozzle segment structural representation 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. 1～4, the combined mechanical oil spout of the present invention-supercharging piezoelectricity jet hybrid fuel jet device
Mainly include combustion gas compression portion 10, piezoelectricity control part 8, nozzle segment 6, pressurizer shell 22,
Control crust of the device 9, injection apparatus shell 7, inlet channel 44, oil-feed oil duct 32, pressure regulating screw 2,
Packing ring 1.Combustion gas compression portion 10 by air inlet 16, pressurized combustion gases outlet 21, pressurised oil oil-in 14,
Pressurised oil drain tap 28, charged piston 23, charged piston epicoele 15, charged piston cavity of resorption 20, supercharging are lived
Plug back-moving spring 17, charged piston back-moving spring chamber 24, boost electromagnetic valve coil 11, supercharging armature 30,
At the bottom of supercharger control valve 12, supercharger control valve back-moving spring 29, supercharger control valve oil pocket 27, supercharger control valve
Seat 26, supercharger control valve return spring holder 13, supercharger control valve drain tap 25, check valve 19, check valve
Back-moving spring 18 grade forms, and boost electromagnetic valve coil 11 is arranged in pressurizer shell 22, supercharging armature
30 are positioned at below boost electromagnetic valve coil 11, and the upper end of supercharger control valve 12 is stuck in supercharging armature by locating snap ring
On 30, supercharger control valve 12 lower end is through the supercharger control valve return spring holder 13 below supercharging armature 30
Being pressed on pressurization control valve base 26, check valve 19 right-hand member is connected by screw and is fixed on check valve little spring
On seat, check valve back-moving spring 18 left end is stuck on one-way valve seat by check valve big spring seat, and check valve is multiple
Check valve 19 left end is pressed on one-way valve seat by position spring 18 right-hand member by check valve little spring seat, supercharging control
Supercharger control valve oil pocket 27, pressurised oil is formed between valve return spring holder 13 processed and pressurization control valve base 26
Oil-feed oil circuit 14 is connected with supercharger control valve oil pocket 27 by the lower seal conical surface of supercharger control valve 12, supercharging
Control valve oil pocket 27 is connected with pressurised oil draining oil circuit 28 by the upper sealing cone of supercharger control valve 12, increases
Pressure control valve base 26 has supercharger control valve drain tap 25, and supercharging is installed in pressurization control valve base 26 lower end
Piston 23, forms charged piston epicoele 15 between pressurization control valve base 26 and charged piston 23, supercharging is lived
Chamber 15 connects with supercharger control valve oil pocket 27 beyond the Great Wall, pressurizer shell 22 and charged piston 23 outer end it
Between charged piston back-moving spring chamber 24 is set, charged piston back-moving spring 17 is arranged on charged piston reset bullet
Spring chamber 24 is internal, arranges charged piston cavity of resorption 20 between pressurizer shell 22 and charged piston 23 lower end,
Charged piston cavity of resorption 20 connects air inlet 16 and pressurized combustion gases outlet 21, pressurized combustion gases outlet 21 and air inlet
Passage 7 connects.Piezoelectricity controls part 8 and mainly includes piezoelectric element 31, metallic gasket 43, conversion piston
42, control valve 33, control valve seat 41, control valve back-moving spring 35, control valve return spring holder 36,
One oil-in 34, control valve oil pocket 40, drain tap 39, piezoelectric element 31 is arranged on control crust of the device 9
Inside, arranges metallic gasket 43 below piezoelectric element 31, conversion piston 42 is stuck on metallic gasket 43,
Conversion piston 42 and control valve below 33 are pressed on control valve back-moving spring 35, and control valve 33 is installed
Inside control valve seat 41, control valve back-moving spring 35 lower end is supported on control valve return spring holder 36,
Control valve 33 arranges sealing cone and the lower seal conical surface, control valve return spring holder 36 and control valve seat 41
Between formed control valve oil pocket 40, control valve seat 41 has the first oil-in 34, control valve back-moving spring
Having drain tap 39 on seat 36, the first oil-in 34 passes through upper sealing cone and the control valve of control valve 33
Oil pocket 40 connects, and control valve oil pocket 40 connects with central oil passage 56, needle chamber 55, control valve oil pocket 40
Connected with drain tap 39 by the lower seal conical surface of control valve 33.Nozzle segment 6 is by Mechanical nozzle part
45, gas nozzle part 57, needle-valve body fastening nut 47, needle-valve base 48 form, Mechanical nozzle portion
Points 45 mainly include the first needle-valve 49, pressure spring 4, tappet the 5, second oil-in 46, oil holding slot 50,
Oil return opening 3, gas nozzle part 57 mainly includes the second needle-valve 52, gag lever post 38, needle-valve back-moving spring
37, central oil passage 56, needle chamber 55, pressure tank the 51, the 3rd oil-in 54, band 53, the first pin
It is internal that valve the 49, second needle-valve 52 is arranged on needle-valve base 48, and first needle-valve the 49, second needle-valve 52 passes through
Needle-valve body fastening nut 47 is fixed on injection apparatus shell 7, needle-valve base 48 and injection apparatus shell 7
Between use alignment pin location, it is internal that pressure spring 4 is arranged on control crust of the device 9, and pressure spring 4 is pressed
On tappet 5, tappet 5 is connected with the first needle-valve 49, is formed between the first needle-valve 49 and needle-valve base 48
Oil holding slot 50, oil holding slot 50 connects with the second oil-in 46, pressure regulating screw 2 with control crust of the device 9 it
Between packing ring 1 is set, control to arrange on crust of the device 9 oil return opening 3, residing for oil return opening 3 and pressure spring 4
Pressure spring chamber connects, and injection apparatus shell 7 is internal arranges gag lever post 38, and gag lever post 38 lower end is enclosed within the
Two needle-valves 52 are internal, and needle-valve back-moving spring 37 is arranged on gag lever post 38 outer end, needle-valve back-moving spring 37 times
End is supported on the second needle-valve 52, forms needle chamber 55 between the second needle-valve 52 and injection apparatus shell 7,
Gag lever post 38 and the second needle-valve 52 arrange central oil passage 56 along axis, and central oil passage 56 connection controls valve oil
Chamber 40 and needle chamber 55, form pressure tank 51, needle-valve base between the second needle-valve 52 and needle-valve base 48
48 and second arrange annular sealing strip 53 between needle-valve 52, and band 53 is connected with the 3rd oil-in 54.
Oil-feed oil duct 8 is along controlling crust of the device 9 radially in hybrid fuel jet device, and along controlling outside device
Shell 9 axially downwardly enters in injection apparatus shell 7, and oil-feed oil duct 32 separates one on control crust of the device 9
Road branch, branch enters piezoelectricity by the first oil-in 34 and controls in part 8, and oil-feed oil duct 32 is in injection
Crust of the device 7 separates two-way branch, and a road branch enters in oil holding slot 50 by the second oil-in 46, and one
Road branch is entered in band 53 by the 3rd oil-in 54；Pressurizer shell 22 is provided with air inlet
16, air inlet 16 is connected with inlet channel 7 by combustion gas compression portion 10, and inlet channel 7 is by controlling
Crust of the device 9, injection apparatus shell 7 enter in pressure tank 62.
The combined mechanical oil spout of the present invention-supercharging piezoelectricity jet hybrid fuel jet device mainly includes combustion gas
Compression portion 10, piezoelectricity control part 8, nozzle segment 6, pressurizer shell 22, control crust of the device
9, injection apparatus shell 7, inlet channel 44, oil-feed oil duct 32, pressure regulating screw 2, packing ring 1, combustion gas increases
Laminate section 10 is by air inlet 16, charged piston 23, boost electromagnetic valve coil 11, supercharger control valve 12, list
Forming to valve 19 grade, piezoelectricity controls part 8 and is made up of piezoelectric element 31, control valve 33 etc., nozzle segment
6 by Mechanical nozzle part 45, gas nozzle part 57, needle-valve body fastening nut 47, needle-valve base 48
Composition.Charged piston 23 is designed to that apex area is big, bottom area is little, utilizes both ends of the surface product moment to realize combustion
Gas supercharging, supercharger control valve 12 arranges sealing cone and the lower seal conical surface, it is achieved hybrid fuel jet device
Switching between interior pressurised oil inlet and outlet of fuel channel, supercharger control valve 12 lower end arranges taper surface, balances pressurization control
Pressurised oil hydraulic coupling suffered by valve 12 lower sealing surface, pressurization control valve base 26 has annular plenum control valve
Drain tap 25, vents and flows to supercharger control valve from the gap of supercharger control valve 12 with pressurization control valve base 26
The pressurised oil of 12 bottoms, it is to avoid pressurised oil produces active force upwards to supercharger control valve 12 thus reduces increasing
Pressure control valve 12 control accuracy, control valve 33 arranges sealing cone and the lower seal conical surface, it is achieved control valve
Switching between fuel oil inlet and outlet of fuel channel in oil pocket 40, metallic gasket 43 plays the effect of isolation, it is to avoid piezoelectricity
Element 31 touches piezoelectricity and controls the fuel oil that part 8 upwards leaks, and the number of packing ring 1 is adjustable, can pass through
The number of increase and decrease packing ring 1 changes the pretightning force of pressure spring 4, thus changes the oil spout pressure of Mechanical nozzle 45
Power, the first needle-valve 49 is pressed to needle-valve base 48 by pressure spring 4, and needle-valve back-moving spring 37 is by the second needle-valve
52 press to needle-valve base 48, arrange annular sealing strip 53 between needle-valve base 48 and the second needle-valve 52, logical
Cross the 3rd oil-in 54 to be connected with oil-feed oil duct 32, seal the combustion gas leaked by pintle nozzle match-ing parts, pressure tank
51 effects playing stable air pressure, thus reduce the air pressure fluctuation impact on fuel gas injection.
During dual fuel engine work, combustion gas passes through charged piston cavity of resorption 20, pressurized combustion gases from air inlet 16
Outlet 21, inlet channel 44 enter in pressure tank 51, and fuel oil enters fuel combination spray from oil-feed oil duct 32
Injection device, is divided into two-way controlling crust of the device 9, and the first oil-in 34 of leading up to enters piezoelectricity control portion
Dividing in 8, a road enters injection apparatus shell 7, and is divided into two-way, a-road-through on injection apparatus shell 7
Crossing the second oil-in 46 to enter in oil holding slot 50, the 3rd oil-in 54 of leading up to enters in band 53.
When boost electromagnetic valve coil 11 is energized, supercharging armature 30 drives supercharger control valve 12 to overcome pressurization control
The spring force of valve back-moving spring 29 moves upward, and the upper sealing cone of supercharger control valve 12 is pressed on supercharging control
On the upper sealing cone of valve return spring holder 13 processed, supercharger control valve oil pocket 27 no longer with pressurised oil drain tap
28 connections, pressurised oil oil-in 14 connects with supercharger control valve oil pocket 27, and pressurised oil is from pressurised oil oil-in
14 enter in charged piston epicoele 15 by supercharger control valve oil pocket 27, and pressurised oil acts on charged piston 23
Top, overcomes the spring force of charged piston back-moving spring 17 to be pressed for 23 times by charged piston, charged piston epicoele
15 volumes increase, and charged piston cavity of resorption 20 volume reduces, and the combustion gas entering charged piston cavity of resorption 20 is compressed,
Gaseous-pressure increases.When the gaseous-pressure in charged piston cavity of resorption 20 and the spring of check valve back-moving spring 18
When making a concerted effort to be more than the gaseous-pressure in air inlet 16 of power, check valve 19 moves right, charged piston cavity of resorption
20 no longer connect with air inlet 16, it is to avoid pressurized combustion gases leaks from air inlet 16, it is ensured that combustion gas supercharging
Efficiency.During boost electromagnetic valve coil 11 power-off, supercharger control valve 12 is at supercharger control valve back-moving spring 29
Moving downward under effect, the lower seal conical surface of supercharger control valve 12 is pressed on pressurization control valve base 26 times
On sealing cone, pressurised oil oil-in 14 no longer connects with supercharger control valve oil pocket 27, pressurization control valve oil
Chamber 27 connects with pressurised oil drain tap 28, and pressurised oil passes through supercharger control valve oil pocket from charged piston epicoele 15
27 leak in pressurised oil drain tap 28, and in charged piston epicoele 15, pressure reduces, when pressure is reduced to necessarily
During value, charged piston back-moving spring 17 is by charged piston 23 jack-up, the combustion gas in charged piston cavity of resorption 20
When making a concerted effort to be less than the gaseous-pressure in air inlet 16 of the spring force of pressure and check valve back-moving spring 18, single
Connecting with air inlet 16 to left movement, charged piston cavity of resorption 20 to valve 19, combustion gas enters hybrid fuel jet
In device.
During dual fuel engine work, the fuel oil from injection pump enters in oil holding slot 50, when acting on first
When fuel pressure on the pressure-bearing conical surface of needle-valve 49 is more than the pretightning force of pressure spring 4, the first needle-valve 49 liters
Rising, fuel oil starts injection.When injection pump fuel cut-off, the fuel pressure in oil holding slot 50 declines, pressure regulation
First needle-valve 49 is pressed to needle-valve base 48 by spring 4, and fuel oil does not sprays.During Mechanical nozzle works,
Oil holding slot 50 there is a small amount of fuel oil from the gap between the first needle-valve 49 and needle-valve base 48 to pressure spring 4
End leakage, is then flowed out by oil return opening 3, and this part fuel oil mating plate when leaking through pintle nozzle match-ing parts plays lubrication
Effect.
When piezoelectric element 31 is energized, piezoelectric element 31 extends, and control valve 33 overcomes control valve back-moving spring
In the spring force of 35 and control valve oil pocket 40, the hydraulic coupling of fuel oil moves downward, the lower sealing surface of control valve 33
Being pressed in the lower sealing surface of control valve return spring holder 36, control valve oil pocket 40 is no longer with drain tap 39 even
Logical, control valve oil pocket 40 connects with the first oil-in 34, and fuel oil passes through the first oil-in from oil-feed oil duct 32
34, control valve oil pocket 40, central oil passage 56 enter in needle chamber 55, and fuel oil acts on the second needle-valve 52
On end face, overcoming the spring force of needle-valve back-moving spring 37 by the second needle-valve 52 jack-up, combustion gas starts injection.
During piezoelectric element 31 power-off, the upper sealing surface of control valve 33 is pressed on control valve by control valve back-moving spring 35
On the upper sealing surface of seat 41, control valve oil pocket 40 no longer connects with the first oil-in 34, control valve oil pocket
40 connect with drain tap 39, and the fuel oil in needle chamber 55 is let out by central oil passage 56, control valve oil pocket 40
Entering in drain tap 39, in needle chamber 55, pressure reduces, and when pressure is reduced to certain value, control valve resets
Second needle-valve 52 is pressed to needle-valve base 48 by spring 35, and combustion gas is not sprayed.
Combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device has three kinds of mode of operations: the first
Being that the first needle-valve 49 works, this mode of operation is pure fuel injection mode；The second is that the first needle-valve 49 is opened
Beginning work the second needle-valve 52 again is started working, and this mode of operation is dual injection mode, and Mechanical nozzle is sprayed
The non pressurized combustion gas of gas nozzle injection is lighted after the fuel oil compression ignition penetrated；The third is charged piston 23 and first
Needle-valve 49 second needle-valve 52 that first works is started working again, and this mode of operation is also dual injection mode, machine
The pressurized combustion gases of gas nozzle injection is lighted after the fuel oil compression ignition of tool formula nozzle injection.
During dual fuel engine work, enter the gaseous-pressure in charged piston cavity of resorption 20 relatively low, pass through supercharging
The combustion gas that gap between piston 23 and pressurizer shell 22 upwards leaks is few, and in charged piston couple
Long mating band and charged piston back-moving spring chamber 24 effect under, the gas leakage of combustion gas compression portion 10
Amount almost can be ignored；During charged piston 23 motion, the pressurized combustion gases of charged piston cavity of resorption 20 leads to
Crossing charged piston 23 couple upwards to leak, due to the long mating band of charged piston couple, combustion gas seldom can leak
To charged piston back-moving spring chamber 24, decrease the leakage rate of pressurized combustion gases, and leak into charged piston reset
The effect of that fraction combustion gas of spring cavity 24 pressurised oil in leaking into charged piston back-moving spring chamber 24
Under will not continue to upwards to leak, it is to avoid the further leakage of pressurized combustion gases；Enter the fuel oil of band 53,
Make the combustion gas being accumulated in pressure tank 51 will not be let out by the gap between the second needle-valve 52 and needle-valve base 48
Leakage, thus avoid the combustion gas static leakage of hybrid fuel jet device；Process in the second needle-valve 52 motion
In, in pressure tank 51, combustion gas is upwards leaked, under the fuel oil effect in band 53 not by pintle nozzle match-ing parts
Can leak at needle-valve back-moving spring 37, directly avoid the combustion gas dynamic leakage of hybrid fuel jet device.
As shown in the above description, combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device utilizes and increases
Pressure electromagnetic valve controls the motion of charged piston and realizes combustion gas supercharging, combustion gas boost pressure and combustion gas charging efficiency height,
Can quickly realize combustion gas boosting jet and the combustion gas switching without boosting jet, meet dual fuel engine different
The power different requirements to fuel gas injection pressure；Utilize Mechanical nozzle to realize fuel oil injection, utilize piezoelectricity unit
Part controls gas nozzle and realizes fuel gas injection, and fuel injection motility is high, it is possible to achieve pure fuel oil service pattern
With oil and gas double fuel mode of operation；Meanwhile, gas nozzle utilizes fuel sealing combustion gas, can be preferably
Solve the problem that combustion gas is leaked by pintle nozzle match-ing parts, dynamic property and the fuel economy of electromotor can be effectively improved
Property.
Combined mechanical oil spout of the present invention-supercharging piezoelectricity jet hybrid fuel jet device, including combustion gas plenum
Divide, piezoelectricity controls part, nozzle segment, inlet channel, oil-feed oil duct, pressure regulating screw etc..Combustion gas supercharging
Part is made up of air inlet, charged piston, electromagnetic valve coil, supercharger control valve, check valve etc., voltage control
Part processed is made up of piezoelectric element, control valve etc., and nozzle segment is by Mechanical nozzle part, gas injection mouth
Divide, needle-valve body fastening nut, needle-valve base form.Described oil-feed oil duct radially enters along controlling crust of the device
Enter in hybrid fuel jet device, and axially downwardly enter in injection apparatus shell along controlling crust of the device, enter
Oil oil duct separates a road branch on control crust of the device, and branch enters piezoelectricity control portion by the first oil-in
In Fen, oil-feed oil duct separates two-way branch at injection apparatus shell, and a road branch is entered by the second oil-in
In oil holding slot, a road branch is entered in band by the 3rd oil-in；Pressurizer shell is provided with air inlet
Mouthful, air inlet is connected with inlet channel by combustion gas compression portion, inlet channel by control crust of the device,
Injection apparatus shell enters in pressure tank.
Boost electromagnetic valve coil is arranged in pressurizer shell, and supercharging armature is positioned under boost electromagnetic valve coil
Side, the upper end of supercharger control valve is stuck on supercharging armature by locating snap ring, and supercharger control valve lower end is pressed in supercharging control
On valve base processed, check valve right-hand member is connected by screw and is fixed on check valve little spring seat, and check valve resets
Spring left end is stuck on one-way valve seat by check valve big spring seat, and check valve back-moving spring right-hand member is by unidirectional
Check valve left end is pressed on one-way valve seat by valve little spring seat.
Supercharger control valve arranges sealing cone and the lower seal conical surface, supercharger control valve return spring holder and supercharging
Forming supercharger control valve oil pocket between control valve base, pressurised oil oil-feed oil circuit is by close under supercharger control valve
The envelope conical surface connects with supercharger control valve oil pocket, the supercharger control valve oil pocket upper sealing cone by supercharger control valve
With pressurised oil draining oil communication, pressurization control valve base has supercharger control valve drain tap, supercharger control valve
Charged piston is installed in base lower end, forms charged piston epicoele between pressurization control valve base and charged piston,
Charged piston epicoele connects with supercharger control valve oil pocket, arranges between pressurizer shell and charged piston outer end
Charged piston back-moving spring chamber, charged piston back-moving spring is arranged on charged piston back-moving spring intracavity portion, increases
Charged piston cavity of resorption, charged piston cavity of resorption connection air inlet are set between pressure device shell and charged piston lower end
Exporting with pressurized combustion gases, pressurized combustion gases outlet connects with inlet channel.
Piezoelectric element is arranged on inside control crust of the device, arranges metallic gasket below piezoelectric element, and conversion is lived
Fork clip is on metallic gasket, and conversion piston and control valve below are pressed on control valve back-moving spring, controls
Valve is arranged on inside control valve seat, and control valve back-moving spring lower end is supported on control valve return spring holder, control
Valve processed arranges sealing cone and the lower seal conical surface, forms control between control valve return spring holder and control valve seat
Valve oil chamber processed, the first oil-in is connected with control valve oil pocket by the upper sealing cone of control valve, controls valve oil
Chamber is connected with drain tap by the lower seal conical surface of control valve.
Mechanical nozzle part includes the first needle-valve and pressure spring.Pressure spring is arranged on control crust of the device
Inside, pressure spring is pressed on tappet, and tappet and the first needle-valve are connected, between the first needle-valve and needle-valve base
Form oil holding slot, oil holding slot and the connection of the second oil-in, control to arrange oil return opening, oil return opening on crust of the device
Connect with the pressure spring chamber at pressure spring place.
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, pin
Valve back-moving spring is arranged on gag lever post outer end, and needle-valve back-moving spring lower end is supported on the second needle-valve, the second pin
Forming needle chamber between valve and injection apparatus shell, gag lever post and the second needle-valve arrange central oil passage along axis,
Central oil passage connection control valve oil pocket and needle chamber, form pressure tank, hold between the second needle-valve and needle-valve base
Indent connects with inlet channel, arranges annular sealing strip, band and between needle-valve base and the second needle-valve
Three oil-ins are connected.
Claims (3)
1. combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device, is characterized in that:
Including combustion gas compression portion, injection apparatus shell, control crust of the device, needle-valve base, piezo jet
Partly, mechanical injection part, needle-valve base is arranged on below injection apparatus shell by needle-valve fastening nut,
Control crust of the device and install in injection apparatus shell, control to arrange oil-feed oil duct, described needle-valve in crust of the device
Base includes piezoelectricity base and mechanical pedestal；
Described combustion gas compression portion includes pressurizer shell, supercharger control valve, boost electromagnetic valve coil, increases
Pressure armature, supercharger control valve back-moving spring, supercharger control valve return spring holder, pressurization control valve base, increasing
Pressure piston, check valve, pressurizer shell is arranged on above control crust of the device, pressurizer shell sets
Putting pressurised oil oil-in, pressurised oil drain tap, air inlet, boost electromagnetic valve coil is arranged on outside pressurizer
In shell, supercharging armature is positioned at below boost electromagnetic valve coil, and the upper end of supercharger control valve is stuck in by locating snap ring
On supercharging armature, the lower end of supercharger control valve is through the supercharger control valve return spring holder pressure below supercharging armature
On pressurization control valve base, supercharger control valve arranges sealing cone and the lower seal conical surface, pressurization control
Forming supercharger control valve oil pocket between valve return spring holder and pressurization control valve base, pressurised oil oil-in passes through
The lower seal conical surface of supercharger control valve connects with supercharger control valve oil pocket, and supercharger control valve oil pocket passes through supercharging control
The upper sealing cone of valve processed connects with pressurised oil drain tap, and pressurization control valve base has supercharger control valve draining
Mouthful, charged piston is arranged on the lower section of pressurization control valve base, between pressurization control valve base and charged piston
Forming charged piston epicoele, charged piston epicoele connects with supercharger control valve oil pocket, pressurizer shell and increasing
Forming charged piston back-moving spring chamber between in the middle part of pressure piston, charged piston back-moving spring is placed on charged piston
And it is positioned at charged piston back-moving spring intracavity portion, between pressurizer shell and charged piston lower end, supercharging is set
Piston cavity of resorption, check valve is arranged in pressurizer shell, and the import of check valve is connected with air inlet, single
To the outlet charged piston cavity of resorption of valve, pressurized combustion gases outlet is set below charged piston cavity of resorption；
Described piezo jet part includes piezoelectric element, conversion piston, control valve, control valve seat, control valve
Return spring holder, gag lever post, the second needle-valve, needle-valve back-moving spring, piezoelectric element is arranged on outside control device
In shell, arranging metallic gasket below piezoelectric element, conversion piston upper end is stuck on metallic gasket, converts piston
Lower section control valve is set, control valve is arranged on inside control valve seat, control valve is arranged sealing cone and under
Sealing cone, is cased with control valve back-moving spring between upper sealing cone and the lower seal conical surface, and control valve resets
Lower spring end is supported on control valve return spring holder, is formed between control valve return spring holder and control valve seat
Control valve oil pocket, control valve seat has the first oil-in, control valve return spring holder has drain tap,
First oil-in realizes connecting or disconnecting with control valve oil pocket by the upper sealing cone of control valve, controls valve oil
Chamber realizes connecting or disconnecting with drain tap by the lower seal conical surface of control valve, and it is multiple that gag lever post is arranged on control valve
Below the spring base of position, the lower end of gag lever post is placed on inside the second needle-valve, and needle-valve back-moving spring is enclosed within outside gag lever post
Portion, the lower end of needle-valve back-moving spring is supported on the second needle-valve, and the second needle-valve is arranged on the piezoelectricity of needle-valve base
In base, forming needle chamber between the second needle-valve and injection apparatus shell, gag lever post and the second needle-valve are along axis
Arranging central oil passage, central oil passage connection control valve oil pocket and needle chamber, between the second needle-valve and piezoelectricity base
Annular sealing strip and pressure tank are set, the 3rd oil-in communicated with oil-feed oil duct are set in injection apparatus shell,
Band and the 3rd oil-in are connected, and injection apparatus shell arranges inlet channel, and pressure tank is led to by air inlet
Road connection pressurized combustion gases outlet；
Described mechanical injection part includes regulating screw, upper tappet, lower tappet, pressure spring, the first needle-valve,
Upper tappet is arranged in control crust of the device, and lower tappet is arranged in injection apparatus shell, sets above upper tappet
Put regulation screw, pressure spring is installed between upper tappet and lower tappet, suppress spring position and form pressure regulation
Spring cavity, controls to arrange oil return opening on crust of the device, and oil return opening communicates with pressure spring chamber, the first needle-valve peace
It is contained in the mechanical pedestal of needle-valve base and is positioned at below tappet, being formed between the first needle-valve and mechanical pedestal and contain
Oil groove, arranges the second oil-in communicated with oil-feed oil duct, oil holding slot and the second oil-feed in injection apparatus shell
Mouth communicates.
Combined mechanical oil spout the most according to claim 1-supercharging piezoelectricity jet hybrid fuel jet dress
Putting, it is characterized in that: during boost electromagnetic valve coil electricity, supercharging armature drives supercharger control valve to overcome supercharging control
The spring force of valve back-moving spring processed moves upward, and it is multiple that the upper sealing cone of supercharger control valve is pressed in supercharger control valve
On the spring base of position, supercharger control valve oil pocket disconnects with pressurised oil drain tap, pressurised oil oil-in and pressurization control
Valve oil chamber connects, and pressurised oil enters charged piston epicoele from pressurised oil oil-in by supercharger control valve oil pocket,
Pressurised oil acts on charged piston top, overcomes the spring force of charged piston back-moving spring to press under charged piston,
Charged piston epicoele volume increases, and charged piston cavity of resorption volume reduces, and enters the combustion gas quilt of charged piston cavity of resorption
Compression；When the gaseous-pressure in charged piston cavity of resorption and the gaseous-pressure making a concerted effort to be more than in air inlet of check valve
Time, closed check valve, charged piston cavity of resorption disconnects with air inlet；During boost electromagnetic valve coil blackout, supercharging
Control valve moves downward under the effect of supercharger control valve back-moving spring, the lower seal conical surface pressure of supercharger control valve
On pressurization control valve base, pressurised oil oil-in disconnects with supercharger control valve oil pocket, supercharger control valve oil pocket
Connecting with pressurised oil drain tap, pressurised oil leaks into pressurised oil from charged piston epicoele by supercharger control valve oil pocket
In drain tap, on charged piston, cavity pressure reduces, charged piston back-moving spring by charged piston jack-up, when
Gaseous-pressure in charged piston cavity of resorption and when making a concerted effort to be less than the gaseous-pressure in air inlet of check valve, unidirectional
Valve is opened, and charged piston cavity of resorption connects with air inlet.
Combined mechanical oil spout the most according to claim 1 and 2-supercharging piezoelectricity jet fuel combination spray
Injection device, is characterized in that: during piezoelectric element energising, and piezoelectric element extends, and control valve overcomes 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 seal conical surface pressure of control valve
On control valve return spring holder, control valve oil pocket disconnects with drain tap, control valve oil pocket and the first oil-in
Connection, fuel oil enters needle chamber from oil-feed oil duct by the first oil-in, control valve oil pocket, central oil passage,
Fuel oil acts on the second needle-valve end face, overcomes the spring force of needle-valve back-moving spring by the second needle-valve jack-up, combustion
Gas starts injection；
During piezoelectric element power-off, the upper sealing cone of control valve is pressed on control valve seat by control valve back-moving spring,
Control valve oil pocket and the first oil-in disconnect, and control valve oil pocket connects with drain tap, and the fuel oil in needle chamber leads to
Cross central oil passage, control valve oil pocket leaks in drain tap, and needle-valve cavity pressure reduces, control valve back-moving spring
Second needle-valve is pressed to needle-valve base, and combustion gas is not sprayed.
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| CN201610250441.6A CN105756829B (en) | 2016-04-21 | 2016-04-21 | Combined mechanical oil spout is pressurized piezoelectricity jet hybrid fuel jet device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343739A (en) * | 2020-11-26 | 2021-02-09 | 中船动力研究院有限公司 | Gas injection valve |
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| CN205714521U (en) * | 2016-04-21 | 2016-11-23 | 哈尔滨工程大学 | Combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device |
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| US4501406A (en) * | 1982-07-15 | 1985-02-26 | Centro Ricerche Fiat S.P.A. | Shut-off device for a fluid |
| JPS6270656A (en) * | 1985-09-24 | 1987-04-01 | Hitachi Ltd | Fuel injection valve for internal combustion engine |
| US4798188A (en) * | 1986-12-04 | 1989-01-17 | Aisan Kogyo Kabushiki Kaisha | Method of controlling injector |
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| CN112343739A (en) * | 2020-11-26 | 2021-02-09 | 中船动力研究院有限公司 | Gas injection valve |
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