CN105756829B - Combined mechanical oil spout is pressurized piezoelectricity jet hybrid fuel jet device - Google Patents
Combined mechanical oil spout is pressurized piezoelectricity jet hybrid fuel jet device Download PDFInfo
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- CN105756829B CN105756829B CN201610250441.6A CN201610250441A CN105756829B CN 105756829 B CN105756829 B CN 105756829B CN 201610250441 A CN201610250441 A CN 201610250441A CN 105756829 B CN105756829 B CN 105756829B
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- oil
- control valve
- valve
- needle
- charged piston
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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
-
- 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
It is an object of the invention to provide combined mechanical oil spout to be pressurized piezoelectricity jet hybrid fuel jet device, including combustion gas compression portion, pressure spring, piezoelectricity control section, Mechanical nozzle, gas nozzle, inlet channel, oil-feed oil duct etc..Combustion gas compression portion of the present invention controls the motion of charged piston to realize that combustion gas is pressurized using boost electromagnetic valve, combustion gas supercharging timing is controllable, the switching of combustion gas boosting jet and combustion gas without boosting jet can be quickly realized, meets that dual fuel engine different capacity is required the difference of fuel gas injection pressure；Mechanical nozzle realizes that fuel oil sprays, and fuel gas injection is realized in piezoelectricity control section using piezoelectric element control gas nozzle, and fuel injection flexibility is high, can realize pure fuel oil injection and the switching of oil and gas dual fuel injection；Fuel oil at the needle chamber and pintle nozzle match-ing parts of gas nozzle is same oil, and oil pressure is equal, avoids the fuel oil static leakage at pintle nozzle match-ing parts.
Description
Technical field
The present invention relates to a kind of fuel injection device, specifically dual fuel engine fuel injection device.
Background technology
Development engine replacing fuel is that solve energy shortage and problem of environmental pollution effectively one of means.Gas
Fuel substitutes combustion because rich reserves, the cheap advantage such as low with disposal of pollutants turn into the engine with good development prospect
Material.Although discharging cleaning only with a kind of gas engine of gaseous fuel, gases used fuel energy density is low, and fuel disappears
Consumption is big, and use direction is limited；And diesel oil is used as light fluid, when gaseous fuel uses as the dual fuel engine of main fuel
Can flexibly it switch between two kinds of fuel, replacement of fuel rate is high, has preferable dynamic property, economy and emission performance.
Existing in-cylinder direct-jet dual fuel engine realizes double fuel using electromagnetic gas nozzle and Mechanical nozzle more
Injection, combustion gas supercharging is more to be had using high-pressure pump compressed gas to authorized pressure, existing weak point：Gas nozzle and mechanical
Nozzle is independently mounted on cylinder cap, and size and installation site are limited by cylinder cap；High-pressure pump structure is complicated, from pump end to gas nozzle
Transmission pipeline length, certain leakage be present in pressurized combustion gases；Gas nozzle jacks up needle-valve using pressure gas, but due to gas
Compressibility is strong, is unfavorable for realizing the accurate control of needle valve movement, and fuel gas injection is unstable；In addition, during fuel gas injection, with
The motion combustion gas of needle-valve is leaked by the gap between needle-valve and valve body to magnetic valve end to be aggravated, and causes fuel gas injection pressure and spray
Rate reduction is penetrated, has harmful effect to the stability of fuel gas injection, have impact on engine power performance and fuel economy.
The content of the invention
It is an object of the invention to provide the combined type of the dynamic property that can effectively improve engine and fuel economy
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, it is characterized in that：
Including combustion gas compression portion, injection apparatus shell, control device shell, needle-valve base, piezo jet part, machinery
Spout part, needle-valve base are arranged on below injection apparatus shell by needle-valve fastening nut, the installation injection of control device shell
In crust of the device, oil-feed oil duct is set, the needle-valve base includes piezoelectricity base and mechanical pedestal in control device shell；
The combustion gas compression portion include supercharging device shell, supercharger control valve, boost electromagnetic valve coil, supercharging armature,
Supercharger control valve back-moving spring, supercharger control valve return spring holder, pressurization control valve base, charged piston, check valve, supercharging dress
Shell is put above control device shell, pressurised oil oil inlet, pressurised oil drain tap, air inlet are set on supercharging device shell
Mouthful, boost electromagnetic valve coil is arranged in supercharging device shell, and supercharging armature is located at below boost electromagnetic valve coil, pressurization control
The upper end of valve is stuck on supercharging armature by locating snap ring, and the lower end of supercharger control valve passes through the supercharger control valve below supercharging armature
Return spring holder is pressed on pressurization control valve base, and upper sealing cone and lower sealing cone, supercharging control are set on supercharger control valve
Supercharger control valve oil pocket is formed between valve return spring holder and pressurization control valve base processed, pressurised oil oil inlet passes through pressurization control
The lower sealing cone of valve connects with supercharger control valve oil pocket, supercharger control valve oil pocket by the upper sealing cone of supercharger control valve with
Pressurised oil drain tap connects, and pressurization control valve base is provided with supercharger control valve drain tap, and charged piston is arranged on supercharger control valve
The lower section of base, forms charged piston epicoele between pressurization control valve base and charged piston, charged piston epicoele and supercharging are controlled
Valve oil chamber connection processed, forms charged piston back-moving spring chamber, charged piston is multiple between supercharging device shell and charged piston middle part
Position spring is placed on charged piston and be located at charged piston back-moving spring intracavitary portion, supercharging device shell and charged piston lower end it
Between set charged piston cavity of resorption, check valve be arranged on supercharging device shell in, the import of check valve is connected with air inlet, unidirectionally
The outlet charged piston cavity of resorption of valve, charged piston cavity of resorption lower section set pressurized combustion gases to export,
The piezo jet part includes piezoelectric element, conversion piston, control valve, control valve seat, control valve back-moving spring
Seat, gag lever post, the second needle-valve, needle-valve back-moving spring, piezoelectric element are arranged in control device shell, are set below piezoelectric element
Metallic gasket, conversion piston upper end are stuck on metallic gasket, set control valve below conversion piston, control valve is arranged on control valve
Seat is internal, and upper sealing cone and lower sealing cone are set in control valve, is cased with controlling between upper sealing cone and lower sealing cone
Valve back-moving spring processed, control valve back-moving spring lower end are supported on control valve return spring holder, control valve return spring holder and control
Control valve oil pocket is formed between valve seat processed, the first oil inlet is provided with control valve seat, draining is provided with control valve return spring holder
Mouthful, the first oil inlet is realized with control valve oil pocket by the upper sealing cone of control valve and connects or disconnect, and control valve oil pocket passes through
The lower sealing cone of control valve is connected or disconnected with drain tap realization, and gag lever post is arranged on below control valve return spring holder, limit
The lower end of position bar is placed on inside the second needle-valve, and needle-valve back-moving spring is enclosed on outside gag lever post, the lower end support of needle-valve back-moving spring
On the second needle-valve, the second needle-valve is arranged in the piezoelectricity base of needle-valve base, shape between the second needle-valve and injection apparatus shell
Into needle chamber, gag lever post and the second needle-valve set central oil passage, central oil passage connection control valve oil pocket and needle chamber along axis, the
Annular sealing strip and pressure tank are set between two needle-valves and piezoelectricity base, set what is communicated with oil-feed oil duct in injection apparatus shell
3rd oil inlet, band are connected with the 3rd oil inlet, and inlet channel is set on injection apparatus shell, and pressure tank is led to by air inlet
Road connection pressurized combustion gases outlet；
The mechanical injection part includes adjusting screw, upper tappet, lower tappet, pressure spring, the first needle-valve, upper tappet peace
In control device shell, lower tappet is arranged in injection apparatus shell, sets adjusting screw above upper tappet, upper tappet with
Pressure spring is installed between lower tappet, suppresses spring position and forms pressure spring chamber, oil return is set on control device shell
Mouthful, oil return opening is communicated with pressure spring chamber, and the first needle-valve is arranged in the mechanical pedestal of needle-valve base and below tappet, the
Oil holding slot is formed between one needle-valve and mechanical pedestal, the second oil inlet communicated with oil-feed oil duct is set in injection apparatus shell,
Oil holding slot communicates with the second oil inlet.
The present invention can also include：
1st, during boost electromagnetic valve coil electricity, supercharging armature drives supercharger control valve to overcome supercharger control valve back-moving spring
Spring force is moved upwards, and the upper sealing cone of supercharger control valve is pressed on supercharger control valve return spring holder, pressurization control valve oil
Chamber is disconnected with pressurised oil drain tap, and pressurised oil oil inlet is connected with supercharger control valve oil pocket, and pressurised oil is led to from pressurised oil oil inlet
Cross supercharger control valve oil pocket to enter in charged piston epicoele, pressurised oil acts on charged piston top, overcomes charged piston to reset
The spring force of spring pushes charged piston, and the increase of charged piston epicoele volume, charged piston cavity of resorption volume reduces, into supercharging
The combustion gas of piston cavity of resorption is compressed；When the combustion for making a concerted effort to be more than in air inlet of the gaseous-pressure in charged piston cavity of resorption and check valve
During atmospheric pressure, closed check valve, charged piston cavity of resorption disconnects with air inlet；During boost electromagnetic valve coil blackout, supercharger control valve
Moved downward in the presence of supercharger control valve back-moving spring, the lower sealing cone of supercharger control valve is pressed in pressurization control valve base
On, pressurised oil oil inlet and supercharger control valve oil pocket disconnect, and supercharger control valve oil pocket connects with pressurised oil drain tap, pressurised oil from
Charged piston epicoele is leaked into pressurised oil drain tap by supercharger control valve oil pocket, and cavity pressure reduces on charged piston, supercharging
Piston reset spring jacks up charged piston, when the gaseous-pressure in charged piston cavity of resorption and check valve make a concerted effort be less than air inlet
In gaseous-pressure when, check valve is opened, and charged piston cavity of resorption connects with air inlet.
2nd, when piezoelectric element is powered, piezoelectric element elongation, control valve overcomes spring force and the control of control valve back-moving spring
The hydraulic coupling of valve oil intracavitary fuel oil is moved downward, and the lower sealing cone of control valve is pressed on control valve return spring holder, control valve
Oil pocket disconnects with drain tap, and control valve oil pocket connects with the first oil inlet, and fuel oil passes through the first oil inlet, control from oil-feed oil duct
Valve oil chamber, central oil passage enter in needle chamber, and fuel oil is acted on the second needle-valve end face, overcomes the spring force of needle-valve back-moving spring
Second needle-valve is jacked up, combustion gas starts to spray；
When piezoelectric element powers off, the upper sealing cone of control valve is pressed on control valve seat by control valve back-moving spring, control
Valve oil chamber and the first oil inlet disconnect, and control valve oil pocket connects with drain tap, and the fuel oil in needle chamber passes through central oil passage, control
Valve oil chamber is leaked into drain tap, and needle-valve cavity pressure reduces, and the second needle-valve is pressed to needle-valve base, combustion gas by control valve back-moving spring
Do not spray.
Advantage of the invention is that：The supercharging of combustion gas, combustion gas supercharging pressure are realized using boost electromagnetic valve control charged piston
Power and combustion gas charging efficiency are high, can quickly realize the switching of combustion gas boosting jet and combustion gas without boosting jet, meet double fuel
Engine different capacity is required the difference of fuel gas injection pressure；Realize that fuel oil sprays using Mechanical nozzle, utilize piezoelectricity member
Part control gas nozzle realizes fuel gas injection, and fuel injection flexibility is high, and pure fuel oil service pattern can be achieved and oil and gas is double
Fuel work pattern；Gas nozzle is using the motion of piezoelectric element control needle-valve, and needle lift is adjustable, fuel gas injection amount and combustion gas
Spraying rate control accuracy is high；The pressure that Mechanical nozzle can change pressure regulating screw and act on pressure spring by changing packing ring number
Power, so as to change the pretightning force of pressure spring, change fuel-injection pressure；Gas nozzle controls needle-valve cavity pressure real with fuel oil
The motion of existing needle-valve, improves fuel gas injection wild effect caused by needle-valve is opened on combustion gas top, can preferably meet that system is sprayed
Penetrate stability requirement；Long mating band and charged piston back-moving spring chamber are used between charged piston and supercharging device shell, is avoided
Gas leakage, improve the stability of pressurizer of gas work；Fuel oil at the needle chamber and pintle nozzle match-ing parts of gas nozzle is
Same oil, oil pressure is equal, avoids the fuel oil static leakage at pintle nozzle match-ing parts；Gas nozzle fuel sealing combustion gas, favorably
In avoiding combustion gas from being leaked by pintle nozzle match-ing parts, fuel gas injection pressure and injection rate are improved, improves the dynamic property of engine
And fuel economy.
Brief description of the drawings
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 section of the present invention；
Fig. 4 is the nozzle segment structural representation of the present invention.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
With reference to Fig. 1~4, combined mechanical of the invention oil spout-supercharging piezoelectricity jet hybrid fuel jet device mainly wraps
Include combustion gas compression portion 10, piezoelectricity control section 8, nozzle segment 6, supercharging device shell 22, control device shell 9, injection dress
Put shell 7, inlet channel 44, oil-feed oil duct 32, pressure regulating screw 2, packing ring 1.Combustion gas compression portion 10 is fired by air inlet 16, supercharging
Gas outlet 21, pressurised oil oil inlet 14, pressurised oil drain tap 28, charged piston 23, charged piston epicoele 15, charged piston cavity of resorption
20th, charged piston back-moving spring 17, charged piston back-moving spring chamber 24, boost electromagnetic valve coil 11, supercharging armature 30, supercharging control
Valve 12 processed, supercharger control valve back-moving spring 29, supercharger control valve oil pocket 27, pressurization control valve base 26, supercharger control valve reset
Spring base 13, supercharger control valve drain tap 25, check valve 19, check valve back-moving spring 18 etc. form, boost electromagnetic valve coil 11
In supercharging device shell 22, supercharging armature 30 is located at the lower section of boost electromagnetic valve coil 11, the upper end of supercharger control valve 12
It is stuck in by locating snap ring on supercharging armature 30, the supercharger control valve of the lower end of supercharger control valve 12 through the lower section of supercharging armature 30 resets bullet
Spring abutment 13 is pressed on pressurization control valve base 26, and the right-hand member of check valve 19, which is connected by screw, to be fixed on check valve little spring seat,
The left end of check valve back-moving spring 18 is stuck on one-way valve seat by check valve big spring seat, and the right-hand member of check valve back-moving spring 18 passes through
The left end of check valve 19 is pressed on one-way valve seat by check valve little spring seat, supercharger control valve return spring holder 13 and supercharger control valve
Form supercharger control valve oil pocket 27 between base 26, pressurised oil oil-feed oil circuit 14 by the lower sealing cone of supercharger control valve 12 with
Supercharger control valve oil pocket 27 connects, the upper sealing cone and pressurised oil draining that supercharger control valve oil pocket 27 passes through supercharger control valve 12
Oil circuit 28 connects, and pressurization control valve base 26 is provided with supercharger control valve drain tap 25, and the installation of the lower end of pressurization control valve base 26 increases
Piston 23 is pressed, charged piston epicoele 15, the He of charged piston epicoele 15 are formed between pressurization control valve base 26 and charged piston 23
Supercharger control valve oil pocket 27 is connected, and charged piston back-moving spring chamber is set between supercharging device shell 22 and the outer end of charged piston 23
24, charged piston back-moving spring 17 is arranged on inside charged piston back-moving spring chamber 24, supercharging device shell 22 and charged piston
Charged piston cavity of resorption 20 is set between 23 lower ends, and charged piston cavity of resorption 20 connects air inlet 16 and pressurized combustion gases outlet 21, supercharging
Gas outlet 21 connects with inlet channel 7.Piezoelectricity control section 8 mainly includes piezoelectric element 31, metallic gasket 43, conversion piston
42nd, control valve 33, control valve seat 41, control valve back-moving spring 35, control valve return spring holder 36, the first oil inlet 34, control
Valve oil chamber 40, drain tap 39, piezoelectric element 31 are arranged on inside control device shell 9, and the lower section of piezoelectric element 31 sets metal gasket
Piece 43, conversion piston 42 are stuck on metallic gasket 43, convert piston 42 and control valve 33 below is pressed in control valve and resets bullet
On spring 35, control valve 33 is arranged on inside control valve seat 41, and the lower end of control valve back-moving spring 35 is supported on control valve back-moving spring
On seat 36, control valve 33 sets upper sealing cone and lower sealing cone, between control valve return spring holder 36 and control valve seat 41
Control valve oil pocket 40 is formed, the first oil inlet 34 is provided with control valve seat 41, drain tap is provided with control valve return spring holder 36
39, the first oil inlet 34 is connected by the upper sealing cone of control valve 33 with control valve oil pocket 40, control valve oil pocket 40 and center
Oil duct 56, needle chamber 55 are connected, and control valve oil pocket 40 is connected by the lower sealing cone of control valve 33 with drain tap 39.Spray nozzle part
6 are divided to be made up of Mechanical nozzle part 45, gas nozzle part 57, needle-valve body fastening nut 47, needle-valve base 48, mechanical spray
Mouth point 45 mainly includes the first needle-valve 49, pressure spring 4, tappet 5, the second oil inlet 46, oil holding slot 50, oil return opening 3, combustion gas
Nozzle segment 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-bearing
Groove 51, the 3rd oil inlet 54, band 53, the first needle-valve 49, the second needle-valve 52 are arranged on inside needle-valve base 48, the first needle-valve
49th, the second needle-valve 52 is fixed on injection apparatus shell 7 by needle-valve body fastening nut 47, outside needle-valve base 48 and injection apparatus
It is arranged between shell 7 using positioning finger setting, pressure spring 4 inside control device shell 9, pressure spring 4 is pressed on tappet 5,
Tappet 5 is connected with the first needle-valve 49, and oil holding slot 50 is formed between the first needle-valve 49 and needle-valve base 48, and oil holding slot 50 enters with second
Hydraulic fluid port 46 is connected, and packing ring 1 is set between pressure regulating screw 2 and control device shell 9, oil return opening 3 is set on control device shell 9,
Oil return opening 3 connects with the pressure spring chamber residing for pressure spring 4, and the inside of injection apparatus shell 7 sets gag lever post 38, gag lever post 38
Lower end is enclosed on inside the second needle-valve 52, and needle-valve back-moving spring 37 is arranged on the outer end of gag lever post 38, the lower end branch of needle-valve back-moving spring 37
Support forms needle chamber 55, the needle-valve of gag lever post 38 and second on the second needle-valve 52 between second needle-valve 52 and injection apparatus shell 7
52 set central oil passage 56 along axis, and central oil passage 56 connects control valve oil pocket 40 and needle chamber 55, the second needle-valve 52 and needle-valve
Pressure tank 51 is formed between base 48, annular sealing strip 53 is set between the needle-valve 52 of needle-valve base 48 and second, band 53 with
3rd oil inlet 54 is connected.Oil-feed oil duct 8 along control device shell 9 radially into hybrid fuel jet device, and along control
Crust of the device 9 axially downwardly enters in injection apparatus shell 7, and oil-feed oil duct 32 separates branch all the way on control device shell 9,
Branch is entered in piezoelectricity control section 8 by the first oil inlet 34, and oil-feed oil duct 32 separates two-way point in injection apparatus shell 7
, branch is entered in oil holding slot 50 by the second oil inlet 46 all the way, and branch enters band by the 3rd oil inlet 54 all the way
In 53；Supercharging device shell 22 is provided with air inlet 16, and air inlet 16 is connected by combustion gas compression portion 10 with inlet channel 7,
Inlet channel 7 is entered in pressure tank 62 by control device shell 9, injection apparatus shell 7.
Combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device of the present invention mainly includes combustion gas plenum
Divide 10, piezoelectricity control section 8, nozzle segment 6, supercharging device shell 22, control device shell 9, injection apparatus shell 7, air inlet
Passage 44, oil-feed oil duct 32, pressure regulating screw 2, packing ring 1, combustion gas compression portion 10 is by air inlet 16, charged piston 23, supercharging electricity
Magnet valve coil 11, supercharger control valve 12, check valve 19 etc. form, and piezoelectricity control section 8 is by groups such as piezoelectric element 31, control valves 33
Into nozzle segment 6 is by Mechanical nozzle part 45, gas nozzle part 57, needle-valve body fastening nut 47,48 groups of needle-valve base
Into.Charged piston 23 is designed to that apex area is big, bottom area is small, realizes that combustion gas is pressurized using both ends difference in areas, supercharging control
Valve 12 processed sets upper sealing cone and lower sealing cone, realizes cutting between pressurised oil inlet and outlet of fuel channel in hybrid fuel jet device
Change, the lower end of supercharger control valve 12 sets taper surface, balances the supercharging oil liquid pressure suffered by the lower sealing surface of supercharger control valve 12, supercharging
Control valve base 26 is provided with annular plenum control valve drain tap 25, vents from supercharger control valve 12 and pressurization control valve base 26
Gap flows to the pressurised oil of the bottom of supercharger control valve 12, avoid pressurised oil supercharger control valve 12 is produced upward active force so as to
The control accuracy of supercharger control valve 12 is reduced, control valve 33 sets upper sealing cone and lower sealing cone, realizes control valve oil pocket 40
Switching between interior fuel oil inlet and outlet of fuel channel, metallic gasket 43 play a part of isolation, avoid piezoelectric element 31 from touching voltage control
The fuel oil that part 8 processed leaks upwards, the number of packing ring 1 is adjustable, can change pressure spring 4 by increasing and decreasing the number of packing ring 1
Pretightning force, so as to change the injection pressure of Mechanical nozzle 45, the first needle-valve 49 is pressed to needle-valve base 48, pin by pressure spring 4
Second needle-valve 52 is pressed to needle-valve base 48 by valve back-moving spring 37, and ring packing is set between the needle-valve 52 of needle-valve base 48 and second
Band 53, it is connected by the 3rd oil inlet 54 with oil-feed oil duct 32, the combustion gas that sealing is leaked by pintle nozzle match-ing parts, pressure tank 51 plays
The effect of stable air pressure, so as to reduce influence of the air pressure fluctuation to fuel gas injection.
When dual fuel engine works, combustion gas exports 21 by charged piston cavity of resorption 20, pressurized combustion gases from air inlet 16, entered
Gas passage 44 enters in pressure tank 51, and fuel oil enters hybrid fuel jet device from oil-feed oil duct 32, divides in control device shell 9
For two-way, entered all the way by the first oil inlet 34 in piezoelectricity control section 8, all the way into injection apparatus shell 7, and sprayed
It is divided into two-way on crust of the device 7, is entered all the way by the second oil inlet 46 in oil holding slot 50, entered all the way by the 3rd oil inlet 54
Enter in band 53.
When boost electromagnetic valve coil 11 is powered, supercharging armature 30 drives supercharger control valve 12 to overcome supercharger control valve to reset bullet
The spring force of spring 29 moves upwards, and the upper sealing cone of supercharger control valve 12 is pressed on the upper of supercharger control valve return spring holder 13
On sealing cone, supercharger control valve oil pocket 27 no longer connects with pressurised oil drain tap 28, pressurised oil oil inlet 14 and pressurization control
Valve oil chamber 27 is connected, and pressurised oil is entered in charged piston epicoele 15 from pressurised oil oil inlet 14 by supercharger control valve oil pocket 27,
Pressurised oil acts on the top of charged piston 23, overcomes the spring force of charged piston back-moving spring 17 to push charged piston 23, increases
The increase of the volume of piston upper chamber 15 is pressed, the volume of charged piston cavity of resorption 20 reduces, and the combustion gas into charged piston cavity of resorption 20 is compressed, and fires
Atmospheric pressure increases.When the spring force of the gaseous-pressure in charged piston cavity of resorption 20 and check valve back-moving spring 18 make a concerted effort to be more than into
During gaseous-pressure in gas port 16, check valve 19 moves right, and charged piston cavity of resorption 20 no longer connects with air inlet 16, avoids
Pressurized combustion gases leak from air inlet 16, ensure that combustion gas charging efficiency.When boost electromagnetic valve coil 11 powers off, supercharger control valve 12
Moved downward in the presence of supercharger control valve back-moving spring 29, the lower sealing cone of supercharger control valve 12 is pressed on pressurization control
On the lower sealing cone of valve base 26, pressurised oil oil inlet 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 leaks into pressurised oil from charged piston epicoele 15 by supercharger control valve oil pocket 27
In drain tap 28, pressure reduces in charged piston epicoele 15, and when pressure is reduced to certain value, charged piston back-moving spring 17 will
Charged piston 23 jacks up, small with joint efforts when the spring force of the gaseous-pressure in charged piston cavity of resorption 20 and check valve back-moving spring 18
During gaseous-pressure in air inlet 16, check valve 19 is connected to left movement, charged piston cavity of resorption 20 with air inlet 16, and combustion gas is entered
Enter in hybrid fuel jet device.
When dual fuel engine works, the fuel oil from injection pump enters in oil holding slot 50, when acting on the first needle-valve 49
The pressure-bearing conical surface on fuel pressure be more than pressure spring 4 pretightning force when, the first needle-valve 49 rises, and fuel oil starts to spray.When
During injection pump fuel cut-off, the fuel pressure in oil holding slot 50 declines, and the first needle-valve 49 is pressed to needle-valve base by pressure spring 4
48, fuel oil does not spray.During Mechanical nozzle works, there is a small amount of fuel oil in oil holding slot 50 from the first needle-valve 49 and needle-valve base
Gap between 48 leaks to the end of pressure spring 4, is then flowed out by oil return opening 3, this part fuel oil is when leaking through pintle nozzle match-ing parts
Mating plate plays lubrication.
When piezoelectric element 31 is powered, piezoelectric element 31 extends, and control valve 33 overcomes the spring force of control valve back-moving spring 35
Moved downward with the hydraulic coupling of fuel oil in control valve oil pocket 40, the lower sealing surface of control valve 33 is pressed on control valve return spring holder
In 36 lower sealing surface, control valve oil pocket 40 no longer connects with drain tap 39, and control valve oil pocket 40 connects with the first oil inlet 34,
Fuel oil is entered in needle chamber 55 from oil-feed oil duct 32 by the first oil inlet 34, control valve oil pocket 40, central oil passage 56, and fuel oil is made
With on the end face of the second needle-valve 52, overcoming the spring force of needle-valve back-moving spring 37 to jack up the second needle-valve 52, combustion gas starts to spray.
When piezoelectric element 31 powers off, the upper sealing surface of control valve 33 is pressed on the upper sealing of control valve seat 41 by control valve back-moving spring 35
On face, control valve oil pocket 40 no longer connects with the first oil inlet 34, and control valve oil pocket 40 connects with drain tap 39, in needle chamber 55
Fuel oil leaked into by central oil passage 56, control valve oil pocket 40 in drain tap 39, in needle chamber 55 pressure reduce, when pressure reduce
During to certain value, the second needle-valve 52 is pressed to needle-valve base 48 by control valve back-moving 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 is
One needle-valve 49 works, and the mode of operation is pure fuel injection mode；It is for second that first needle-valve 49 is started working the second needle-valve again
52 start working, and the mode of operation is dual injection mode, and gas nozzle is lighted after the fuel oil compression ignition of Mechanical nozzle injection
The non pressurized combustion gas of injection；The third is that the needle-valve 49 of charged piston 23 and first second needle-valve 52 that first works is started working again, should
Mode of operation is also dual injection mode, and the supercharging combustion of gas nozzle injection is lighted after the fuel oil compression ignition of Mechanical nozzle injection
Gas.
It is relatively low into the gaseous-pressure in charged piston cavity of resorption 20 when dual fuel engine works, pass through charged piston 23
The combustion gas that gap between supercharging device shell 22 leaks upwards is few, and is lived in the long mating band of charged piston couple and supercharging
In the presence of filling in back-moving spring chamber 24, the gas leakage amount of combustion gas compression portion 10 can almost be ignored；Charged piston 23 moves
During, the pressurized combustion gases of charged piston cavity of resorption 20 are leaked upwards by the couple of charged piston 23, due to charged piston couple
Long mating band, combustion gas can seldom leak into charged piston back-moving spring chamber 24, reduce the leakage rate of pressurized combustion gases, and leak
To pressurised oil of that fraction combustion gas in charged piston back-moving spring chamber 24 is leaked into of charged piston back-moving spring chamber 24
It will not continue to leak upwards under effect, avoid the further leakage of pressurized combustion gases；Into the fuel oil of band 53, make to be accumulated in
Combustion gas in pressure tank 51 will not be by the clearance leakage between the second needle-valve 52 and needle-valve base 48, so as to avoid mixing combustion
Expect the combustion gas static leakage of injection apparatus；The second needle-valve 52 move during, in pressure tank 51 combustion gas pass through pintle nozzle match-ing parts
Leakage upwards, it will not be leaked at needle-valve back-moving spring 37 under the fuel oil effect in band 53, directly avoid mixing combustion
Expect the combustion gas dynamic leakage of injection apparatus.
As shown in the above description, combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device utilizes supercharging electricity
The motion of magnet valve control charged piston realizes that combustion gas is pressurized, and combustion gas boost pressure and combustion gas charging efficiency are high, can quickly realize
The switching of combustion gas boosting jet and combustion gas without boosting jet, meet dual fuel engine different capacity to fuel gas injection pressure not
With requirement；Realize that fuel oil sprays using Mechanical nozzle, fuel gas injection, fuel spray are realized using piezoelectric element control gas nozzle
Penetrate flexibility height, it is possible to achieve pure fuel oil service pattern and oil and gas double fuel mode of operation；Meanwhile gas nozzle utilizes
Fuel sealing combustion gas, can preferably solve the problems, such as that combustion gas is leaked by pintle nozzle match-ing parts, the dynamic of engine can be effectively improved
Power and fuel economy.
Combined mechanical oil spout of the present invention-supercharging piezoelectricity jet hybrid fuel jet device, including combustion gas compression portion, pressure
The collecting of electrical controls, nozzle segment, inlet channel, oil-feed oil duct, pressure regulating screw etc..Combustion gas compression portion is lived by air inlet, supercharging
Plug, electromagnetic valve coil, supercharger control valve, check valve etc. are formed, and piezoelectricity control section is made up of piezoelectric element, control valve etc., are sprayed
Mouth point is made up of Mechanical nozzle part, gas nozzle part, needle-valve body fastening nut, needle-valve base.Described oil-feed oil
Road radially into hybrid fuel jet device, and is axially downwardly into injection dress along control device shell along control device shell
Put in shell, oil-feed oil duct separates branch all the way on control device shell, and branch is controlled by the first oil inlet into piezoelectricity
In part, oil-feed oil duct separates two-way branch in injection apparatus shell, and branch is entered in oil holding slot by the second oil inlet all the way,
Branch is entered in band by the 3rd oil inlet all the way；Supercharging device shell is provided with air inlet, and air inlet is increased by combustion gas
Laminate section is connected with inlet channel, and inlet channel is entered in pressure tank by control device shell, injection apparatus shell.
Boost electromagnetic valve coil is arranged in supercharging device shell, and supercharging armature is located at below boost electromagnetic valve coil, increases
The upper end of pressure control valve is stuck on supercharging armature by locating snap ring, and supercharger control valve lower end is pressed on pressurization control valve base, unidirectionally
Valve right-hand member, which is connected by screw, to be fixed on check valve little spring seat, and check valve back-moving spring left end passes through check valve big spring seat
It is stuck on one-way valve seat, check valve left end is pressed in one-way valve seat by check valve back-moving spring right-hand member by check valve little spring seat
On.
Supercharger control valve sets upper sealing cone and lower sealing cone, supercharger control valve return spring holder and supercharger control valve
Supercharger control valve oil pocket is formed between base, pressurised oil oil-feed oil circuit passes through the lower sealing cone of supercharger control valve and pressurization control
Valve oil chamber connects, and supercharger control valve oil pocket passes through the upper sealing cone and pressurised oil draining oil communication of supercharger control valve, supercharging
Control valve base is provided with supercharger control valve drain tap, pressurization control valve base lower end installation charged piston, pressurization control valve base
Charged piston epicoele is formed between charged piston, charged piston epicoele connects with supercharger control valve oil pocket, supercharging device shell
Charged piston back-moving spring chamber is set between charged piston outer end, and charged piston back-moving spring is arranged on charged piston and resets bullet
Spring intracavitary portion, charged piston cavity of resorption, the connection air inlet of charged piston cavity of resorption are set between supercharging device shell and charged piston lower end
Mouth and pressurized combustion gases outlet, pressurized combustion gases outlet connect with inlet channel.
Piezoelectric element is arranged on control device enclosure, and metallic gasket is set below piezoelectric element, and conversion piston is stuck in
On metallic gasket, convert piston and control valve below is pressed on control valve back-moving spring, control valve is arranged on control valve seat
Inside, control valve back-moving spring lower end are supported on control valve return spring holder, and control valve sets upper sealing cone and lower sealing
The conical surface, forms control valve oil pocket between control valve return spring holder and control valve seat, the first oil inlet passes through the upper close of control valve
The envelope conical surface is connected with control valve oil pocket, and control valve oil pocket is connected by the lower sealing cone of control valve with drain tap.
Mechanical nozzle part includes the first needle-valve and pressure spring.Pressure spring is arranged on control device enclosure,
Pressure spring is pressed on tappet, and tappet is connected with the first needle-valve, and oil holding slot, oil holding slot are formed between the first needle-valve and needle-valve base
Connected with the second oil inlet, oil return opening is set on control device shell, oil return opening connects with the pressure spring chamber where pressure spring
It is logical.
Gas nozzle part includes gag lever post and the second needle-valve.Gag lever post lower end is enclosed on inside the second needle-valve, and needle-valve resets
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 needle-valve and injection apparatus shell
Between form needle chamber, gag lever post and the second needle-valve central oil passage, central oil passage connection control valve oil pocket and pin be set along axis
Valve pocket, pressure tank is formed between the second needle-valve and needle-valve base, pressure tank connects with inlet channel, needle-valve base and the second needle-valve
Between annular sealing strip is set, band is connected with the 3rd oil inlet.
Claims (3)
1. combined mechanical oil spout-supercharging piezoelectricity jet hybrid fuel jet device, it is characterized in that：
Including combustion gas compression portion, injection apparatus shell, control device shell, needle-valve base, piezo jet part, mechanical injection
Part, needle-valve base are arranged on below injection apparatus shell by needle-valve fastening nut, control device shell installation injection apparatus
In shell, oil-feed oil duct is set, the needle-valve base includes piezoelectricity base and mechanical pedestal in control device shell；
The combustion gas compression portion includes supercharging device shell, supercharger control valve, boost electromagnetic valve coil, supercharging armature, supercharging
Control valve back-moving spring, supercharger control valve return spring holder, pressurization control valve base, charged piston, check valve, outside supercharging device
Shell is arranged on above control device shell, and pressurised oil oil inlet, pressurised oil drain tap, air inlet are set on supercharging device shell,
Boost electromagnetic valve coil is arranged in supercharging device shell, and supercharging armature is located at below boost electromagnetic valve coil, supercharger control valve
Upper end be stuck in by locating snap ring on supercharging armature, the lower end of supercharger control valve is answered through the supercharger control valve below supercharging armature
Position spring base is pressed on pressurization control valve base, and upper sealing cone and lower sealing cone, pressurization control are set on supercharger control valve
Supercharger control valve oil pocket is formed between valve return spring holder and pressurization control valve base, pressurised oil oil inlet passes through supercharger control valve
Lower sealing cone connected with supercharger control valve oil pocket, supercharger control valve oil pocket is by the upper sealing cone of supercharger control valve with increasing
Drain tap connection is pressed oil, pressurization control valve base is provided with supercharger control valve drain tap, and charged piston is arranged on supercharger control valve bottom
The lower section of seat, charged piston epicoele, charged piston epicoele and pressurization control are formed between pressurization control valve base and charged piston
Valve oil chamber is connected, and charged piston back-moving spring chamber is formed between supercharging device shell and charged piston middle part, and charged piston resets
Spring is placed on charged piston and is located at charged piston back-moving spring intracavitary portion, between supercharging device shell and charged piston lower end
Charged piston cavity of resorption is set, and check valve is arranged in supercharging device shell, and the import of check valve is connected with air inlet, check valve
Outlet charged piston cavity of resorption, set pressurized combustion gases to export below charged piston cavity of resorption；
The piezo jet part includes piezoelectric element, conversion piston, control valve, control valve seat, control valve return spring holder, limit
Position bar, the second needle-valve, needle-valve back-moving spring, piezoelectric element are arranged in control device shell, and metal is set below piezoelectric element
Pad, conversion piston upper end are stuck on metallic gasket, and control valve is set below conversion piston, and control valve is arranged in control valve seat
Portion, upper sealing cone and lower sealing cone are set in control valve, control valve is cased between upper sealing cone and lower sealing cone
Back-moving spring, control valve back-moving spring lower end are supported on control valve return spring holder, control valve return spring holder and control valve
Control valve oil pocket is formed between seat, the first oil inlet is provided with control valve seat, drain tap is provided with control valve return spring holder, the
One oil inlet is connected or disconnected with the realization of control valve oil pocket by the upper sealing cone of control valve, and control valve oil pocket passes through control valve
Lower sealing cone and drain tap realize and connect or disconnect, gag lever post is arranged on control valve return spring holder lower section, gag lever post
Lower end is placed on inside the second needle-valve, and needle-valve back-moving spring is enclosed on outside gag lever post, and the lower end of needle-valve back-moving spring is supported on second
On needle-valve, the second needle-valve is arranged in the piezoelectricity base of needle-valve base, and needle-valve is formed between the second needle-valve and injection apparatus shell
Chamber, gag lever post and the second needle-valve set central oil passage, central oil passage connection control valve oil pocket and needle chamber, the second needle-valve along axis
Annular sealing strip and pressure tank are set between piezoelectricity base, set the communicated with oil-feed oil duct the 3rd to enter in injection apparatus shell
Hydraulic fluid port, band are connected with the 3rd oil inlet, and inlet channel is set on injection apparatus shell, and pressure tank is connected by inlet channel
Pressurized combustion gases export；
The mechanical injection part includes adjusting screw, upper tappet, lower tappet, pressure spring, the first needle-valve, and upper tappet is arranged on
In control device shell, lower tappet is arranged in injection apparatus shell, and adjusting screw is set above upper tappet, and upper tappet is endured with lower
Pressure spring is installed between bar, spring position is suppressed and forms pressure spring chamber, oil return opening is set on control device shell, returned
Hydraulic fluid port is communicated with pressure spring chamber, and the first needle-valve is arranged in the mechanical pedestal of needle-valve base and below tappet, the first pin
Oil holding slot is formed between valve and mechanical pedestal, the second oil inlet communicated with oil-feed oil duct is set in injection apparatus shell, contains oil
Groove communicates with the second oil inlet.
2. combined mechanical oil spout according to claim 1-supercharging piezoelectricity jet hybrid fuel jet device, its feature
It is：During boost electromagnetic valve coil electricity, supercharging armature drive supercharger control valve overcomes the spring force of supercharger control valve back-moving spring
Motion, the upper sealing cone of supercharger control valve are pressed on supercharger control valve return spring holder upwards, and supercharger control valve oil pocket is with increasing
Press oil drain tap to disconnect, pressurised oil oil inlet connects with supercharger control valve oil pocket, and pressurised oil passes through supercharging from pressurised oil oil inlet
Control valve oil pocket enters in charged piston epicoele, and pressurised oil acts on charged piston top, overcomes charged piston back-moving spring
Spring force pushes charged piston, and the increase of charged piston epicoele volume, charged piston cavity of resorption volume reduces, under charged piston
The combustion gas of chamber is compressed；When the gaseous-pressure in charged piston cavity of resorption and the gaseous-pressure for making a concerted effort to be more than in air inlet of check valve
When, closed check valve, charged piston cavity of resorption disconnects with air inlet；During boost electromagnetic valve coil blackout, supercharger control valve is being pressurized
Moved downward in the presence of control valve back-moving spring, the lower sealing cone of supercharger control valve is pressed on pressurization control valve base, is increased
Press oil oil inlet and supercharger control valve oil pocket to disconnect, supercharger control valve oil pocket connects with pressurised oil drain tap, and pressurised oil is from supercharging
Piston upper chamber is leaked into pressurised oil drain tap by supercharger control valve oil pocket, and cavity pressure reduces on charged piston, charged piston
Back-moving spring jacks up charged piston, makes a concerted effort to be less than in air inlet when the gaseous-pressure in charged piston cavity of resorption and check valve
During gaseous-pressure, check valve is opened, and charged piston cavity of resorption connects with air inlet.
3. combined mechanical oil spout according to claim 1 or 2-supercharging piezoelectricity jet hybrid fuel jet device, it is special
Sign is：When piezoelectric element is powered, piezoelectric element elongation, control valve overcomes the spring force and control valve oil pocket of control valve back-moving spring
The hydraulic coupling of interior fuel oil is moved downward, and the lower sealing cone of control valve is pressed on control valve return spring holder, control valve oil pocket with
Drain tap disconnects, and control valve oil pocket connects with the first oil inlet, and fuel oil passes through the first oil inlet, control valve oil from oil-feed oil duct
Chamber, central oil passage enter in needle chamber, and fuel oil is acted on the second needle-valve end face, overcome the spring force of needle-valve back-moving spring by the
Two needle-valves jack up, and combustion gas starts to spray；
When piezoelectric element powers off, the upper sealing cone of control valve is pressed on control valve seat by control valve back-moving spring, controls valve oil
Chamber and the first oil inlet disconnect, and control valve oil pocket connects with drain tap, and the fuel oil in needle chamber passes through central oil passage, control valve oil
Chamber is leaked into drain tap, and needle-valve cavity pressure reduces, and the second needle-valve is pressed to needle-valve base by control valve back-moving spring, and combustion gas is not sprayed
Penetrate.
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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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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501406A (en) * | 1982-07-15 | 1985-02-26 | Centro Ricerche Fiat S.P.A. | Shut-off device for a fluid |
| US4798188A (en) * | 1986-12-04 | 1989-01-17 | Aisan Kogyo Kabushiki Kaisha | Method of controlling injector |
| US5394852A (en) * | 1989-06-12 | 1995-03-07 | Mcalister; Roy E. | Method and apparatus for improved combustion engine |
| DE10151688A1 (en) * | 2001-10-19 | 2003-04-30 | Bosch Gmbh Robert | Valve for controlling liquids |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610461B2 (en) * | 1985-09-24 | 1994-02-09 | 株式会社日立製作所 | Fuel injection valve for internal combustion engine |
| JPH02233864A (en) * | 1989-03-06 | 1990-09-17 | Toyota Motor Corp | Unit injector |
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2016
- 2016-04-21 CN CN201610250441.6A patent/CN105756829B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501406A (en) * | 1982-07-15 | 1985-02-26 | Centro Ricerche Fiat S.P.A. | Shut-off device for a fluid |
| US4798188A (en) * | 1986-12-04 | 1989-01-17 | Aisan Kogyo Kabushiki Kaisha | Method of controlling injector |
| US5394852A (en) * | 1989-06-12 | 1995-03-07 | Mcalister; Roy E. | Method and apparatus for improved combustion engine |
| DE10151688A1 (en) * | 2001-10-19 | 2003-04-30 | Bosch Gmbh Robert | Valve for controlling liquids |
| 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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