CN205714518U - The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of combination type - Google Patents
The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of combination type Download PDFInfo
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- CN205714518U CN205714518U CN201620338785.8U CN201620338785U CN205714518U CN 205714518 U CN205714518 U CN 205714518U CN 201620338785 U CN201620338785 U CN 201620338785U CN 205714518 U CN205714518 U CN 205714518U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The purpose of this utility model is to provide combination type non pressurized fuel pressurization combustion gas double piezoelectricity hybrid fuel jet device, grades including combustion gas compression portion, double piezoelectricity control part, spray nozzle part.The motion that this utility model utilizes boost electromagnetic valve to control charged piston realizes combustion gas supercharging, two piezoelectric elements are utilized to control gas nozzle injection combustion gas and fuel nozzle injection fuel oil respectively, it is possible to achieve the injection of pure fuel oil, fuel oil/non pressurized combustion gas dual fuel injection and fuel oil/pressurized combustion gases dual fuel injection three kinds mode of operation；Combustion gas compression portion controls the supercharging of combustion gas, and combustion gas supercharging timing is controlled, can quickly realize combustion gas boosting jet and the combustion gas switching without boosting jet, meet the different requirements to fuel gas injection pressure of the dual fuel engine different capacity.
Description
Technical field
The utility model relates to a kind of fuel injection device, specifically dual fuel engine fuel spray
Injection device.
Background technology
Development engine replacing fuel be solve energy shortage and problem of environmental pollution effectively means it
One.Before gaseous fuel becomes have good development because of advantages such as rich reserves, cheap and disposal of pollutants are low
The engine replacing fuel of scape.Although only with the gas engine discharge cleaning of a kind of gaseous fuel, but institute
Low with gaseous fuel energy resource density, fuel consumption is big, uses direction limited；And use diesel oil as light fluid,
Gaseous fuel can switch when using as the dual fuel engine of main fuel between two kinds of fuel flexibly, combustion
Material substitution rate is high, has preferable dynamic property, economy and emission performance.
The gas nozzle of existing in-cylinder direct-jet dual fuel engine many employings electromagnetic control type and fuel nozzle,
Combustion gas supercharging many employings high-pressure pump compressed gas has to authorized pressure, the weak point existed: fuel injection control
Required precision processed is high, although it is controlled to use electromagnetic valve to control needle valve movement timing, but magnetic valve controller is subject to
Hysteresis loop and the impact of solenoid inductance, needle-valve response has delay, impact to control relative to control signal
Precision；High-pressure pump structure is complicated, and the transmission pipeline from pump end to gas nozzle is long, and pressurized combustion gases exists certain
Leakage；Gas nozzle and fuel nozzle are independently mounted on cylinder cap, and size and installation site are limited by cylinder cap；
Gas nozzle utilizes pressure gas jack-up needle-valve, but owing to the compressibility of gas is strong, is unfavorable for realizing needle-valve fortune
Dynamic accurate control, fuel gas injection is unstable；Additionally, during fuel gas injection, along with the motion of needle-valve is fired
Gas to the leakage aggravation of electromagnetic valve end, causes fuel gas injection pressure and injection by the gap between needle-valve and valve body
Rate reduction, has harmful effect to the stability of fuel gas injection, have impact on engine power performance and fuel
Economy.
Summary of the invention
The purpose of this utility model is that offer can quickly realize the injection of pure fuel oil, fuel oil/non pressurized combustion gas pair
The non pressurized fuel oil of combination type of fuel injection and fuel oil/pressurized combustion gases dual fuel injection three kinds mode of operation switching-
The double piezoelectricity hybrid fuel jet device of pressurized combustion gases.
The purpose of this utility model is achieved in that
The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of this utility model combination type, its feature
Be: combustion gas compression portion, include control crust of the device, injection apparatus shell, needle-valve base, the first piezoelectricity
Part and the second piezoelectric, control crust of the device and be arranged in injection apparatus shell, and needle-valve floor installation exists
Below injection apparatus shell, control to arrange oil-feed oil duct and inlet channel, injection apparatus shell in crust of the device
On the first drain tap and the second drain tap are set, needle-valve base includes the first base and the second base；
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, arranging pressurized combustion gases outlet below charged piston cavity of resorption, supercharging is fired
Gas outlet inlet channel；
Described first piezoelectric include the first piezoelectric element, first conversion piston, the first control valve, first
Control valve seat, the first control valve back-moving spring, the first control valve return spring holder, the first needle-valve, the first pin
Valve back-moving spring, the first piezoelectric element is arranged in control crust of the device, arranges the below the first piezoelectric element
One metallic gasket, the first conversion piston is stuck on the first metallic gasket, arranges first below the first conversion piston
Control valve, the first control valve is pressed on the first control valve back-moving spring and the first control valve is positioned at the first control valve
Seat is internal, and the first control valve back-moving spring lower end is supported on the first control valve return spring holder, and first controls
Sealing cone is set on valve, between the first control valve return spring holder and the first control valve seat, forms the first control
Valve oil chamber processed, forms oil back chamber, the first control valve oil pocket connection between the first control valve and the first control valve seat
First drain tap, the first needle-valve is arranged in the first base, the upper end of the first needle-valve and injection apparatus shell it
Between formed control chamber, control chamber by first oil-in connection oil-feed oil duct and by oil return opening connection oil back chamber,
First needle-valve back-moving spring is placed on the first needle-valve, the apical support of the first needle-valve back-moving spring on needle-valve cap,
Needle-valve cap is positioned in the first base and is positioned at below injection apparatus shell, and the lower end of the first needle-valve back-moving spring is propped up
Support, on the first needle-valve, forms oil holding slot between the first needle-valve and the first base, oil holding slot passes through the 3rd oil-feed
Mouth connection oil-feed oil duct；
Described second piezoelectric include the second piezoelectric element, second conversion piston, the second control valve, second
Control valve seat, the second control valve back-moving spring, the second control valve return spring holder, the second needle-valve, the second pin
Valve back-moving spring, gag lever post, the second piezoelectric element is arranged in control crust of the device, under the second piezoelectric element
Side arranges the second metallic gasket, and the second conversion piston is stuck on the second metallic gasket, below the second conversion piston
Arranging the second control valve, the second control valve is pressed on the second control valve back-moving spring and the second control valve is positioned at
Inside two control valve seats, the second control valve back-moving spring lower end is supported on the second control valve return spring holder,
Sealing cone and the lower seal conical surface, the second control valve return spring holder and the second control are set in the second control valve
The second control valve oil pocket, the second control valve and the second control valve back-moving spring below is formed between valve seat processed
Forming draining chamber between Zuo, form oil suction chamber between the second control valve and the second control valve seat, oil suction chamber passes through
Second oil-in connection oil-feed oil duct, draining chamber connects the second drain tap, and gag lever post is arranged on the second control valve
Below return spring holder, gag lever post lower end is enclosed within inside the second needle-valve, and the second needle-valve is arranged in the second base,
Second needle-valve back-moving spring is enclosed within outside gag lever post, and the second needle-valve back-moving spring lower end is supported on the second needle-valve,
Gag lever post and the second needle-valve arrange central oil passage along axis, form needle chamber between gag lever post and the second needle-valve,
Central oil passage is respectively communicated with the second control valve oil pocket and needle chamber, difference shape between the second needle-valve and the second base
Circularizing band and pressure tank, annular sealing strip is by the 4th oil-in connection oil-feed oil duct, and pressure tank is even
Logical inlet channel.
This utility model can also include:
1, during the first piezoelectric element energising, the first piezoelectric element elongation, the first control valve overcomes the first control valve
The spring force of back-moving spring moves downward, and oil return opening connects with oil back chamber, fuel oil from control chamber by oil return opening,
First control valve oil pocket leaks in the first drain tap, controls intracavity fuel pressure and reduces, acts in oil holding slot
Fuel oil on first face of needle seating, overcomes the spring force of the first needle-valve back-moving spring by the first needle-valve jack-up, combustion
Oil spurts；During the first piezoelectric element power-off, the first control valve back-moving spring is by the upper sealing surface of the first control valve
Being pressed on the first control valve seat, the first control valve oil pocket disconnects with oil return opening, controls the combustion in chamber and oil holding slot
Oil pressure is identical, and the first needle-valve presses to the first base under the effect of the first needle-valve back-moving spring, and fuel oil does not sprays
Penetrate.
2, during the second piezoelectric element energising, the second piezoelectric element elongation, the second control valve overcomes the second control valve
In the spring force of back-moving spring and the second control valve oil pocket, the hydraulic coupling of fuel oil moves downward, the second control valve
Lower sealing surface is pressed on the second control valve return spring holder, and the second control valve oil pocket and the second drain tap disconnect,
Second control valve oil pocket and the connection of the second oil-in, fuel oil passes through the second oil-in, the second control from oil-feed oil duct
Valve oil chamber processed, central oil passage enter in needle chamber, and fuel oil acts on the second needle-valve end face, overcomes the second pin
The spring force of valve back-moving spring is by the second needle-valve jack-up, fuel gas injection；During the second piezoelectric element power-off, second
The upper sealing surface of the second control valve is pressed on the second control valve seat by control valve back-moving spring, and second controls valve oil
Chamber disconnects with the second oil-in, and the second control valve oil pocket and the connection of the second drain tap, the fuel oil in needle chamber leads to
Cross central oil passage, the second control valve oil pocket leaks in the second drain tap, and needle-valve cavity pressure reduces, the second control
Second needle-valve is pressed to the second base by valve back-moving spring processed, and combustion gas is not sprayed.
Advantage of the present utility model is: controls charged piston with boost electromagnetic valve and 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, meet the different requirements to fuel gas injection pressure of the dual fuel engine different capacity；Real with two nozzles
The injection of existing two-way fuel, fuel injection motility is high, can quickly realize fuel oil injection and dual fuel injection
Switching；Two nozzles all use piezoelectric element to control the motion of needle-valve, and needle lift is adjustable, fuel injection amount
And fuel injection rate control accuracy is high；Gas nozzle fuel oil controls needle-valve cavity pressure and realizes the motion of needle-valve,
Improve combustion gas and back down the fuel gas injection wild effect that needle-valve causes, can preferably meet system injection steady
Qualitative requirement；Long mating band and charged piston back-moving spring chamber is used between charged piston and pressurizer shell,
Avoid gas leakage, improve the stability of pressurizer of gas work；The needle chamber of gas nozzle and needle-valve
Fuel oil at couple is same oil, and oil pressure is equal, it is to avoid the fuel oil static leakage at pintle nozzle match-ing parts；Combustion
Oil burner nozzle eliminates control piston, and the fuel oil controlling intracavity directly drives needle valve movement, compact conformation, response
Quickly, and needle-valve back-moving spring is arranged in high pressure fuel, it is to avoid fuel oil static leakage；Gas nozzle is used
Fuel sealing combustion gas, is conducive to avoiding combustion gas to be leaked by pintle nozzle match-ing parts, improves fuel gas injection pressure and spray
Firing rate rate, improves dynamic property and the fuel economy of electromotor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is combustion gas compression portion schematic diagram of the present utility model；
Fig. 3 is that the double piezoelectricity of this utility model controls partial schematic diagram；
Fig. 4 is this utility model nozzle segment schematic diagram.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and this utility model be described in more detail:
In conjunction with Fig. 1～4, the double piezoelectricity fuel combination of the non pressurized fuel oil-pressurized combustion gases of combination type of the present utility model
Injection apparatus mainly includes that combustion gas compression portion 10, double piezoelectricity control part 3, nozzle segment 5, supercharging dress
Put shell 22, control crust of the device 1, injection apparatus shell 4, inlet channel 7, oil-feed oil duct 8.Combustion gas
Compression portion 10 is 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, charged piston back-moving spring 17,
Charged piston back-moving spring chamber 24, electromagnetic valve coil 11, armature 30, supercharger control valve 12, pressurization control
Valve back-moving spring 29, supercharger control valve oil pocket 27, pressurization control valve base 26, supercharger control valve reset bullet
Spring abutment 13, supercharger control valve drain tap 25, check valve 19, check valve back-moving spring 18 etc. form, electromagnetism
Valve coil 11 is arranged in pressurizer shell 22, and armature 30 is positioned at below electromagnetic valve coil 11, supercharging
The upper end of control valve 12 is stuck on armature 30 by locating snap ring, and supercharger control valve 12 lower end passes armature 30 times
The supercharger control valve return spring holder 13 of side is pressed on pressurization control valve base 26, and check valve 19 right-hand member passes through
Screw is fastened on check valve little spring seat, and check valve back-moving spring 18 left end passes through check valve big spring
Seat is stuck on one-way valve seat, and check valve back-moving spring 18 right-hand member passes through check valve little spring seat by check valve 19
Left end is pressed on one-way valve seat, shape between supercharger control valve return spring holder 13 and pressurization control valve base 26
Become supercharger control valve oil pocket 27, pressurised oil oil-feed oil circuit 14 by the lower seal conical surface of supercharger control valve 12 with
Supercharger control valve oil pocket 27 connects, the supercharger control valve oil pocket 27 upper sealing cone by supercharger control valve 12
Connecting with pressurised oil draining oil circuit 28, pressurization control valve base 26 has supercharger control valve drain tap 25, increases
Charged piston 23 is installed in pressure control valve base 26 lower end, pressurization control valve base 26 and charged piston 23 it
Between formed charged piston epicoele 15, charged piston epicoele 15 connects with supercharger control valve oil pocket 27, supercharging fill
Putting and arrange charged piston back-moving spring chamber 24 between shell 22 and charged piston 23 outer end, charged piston resets
It is internal that spring 17 is arranged on charged piston back-moving spring chamber 24, pressurizer shell 22 and charged piston 23
Arranging charged piston cavity of resorption 20 between lower end, charged piston cavity of resorption 20 connects air inlet 16 and pressurized combustion gases goes out
Mouth 21, pressurized combustion gases outlet 21 connects with inlet channel 7.Double piezoelectricity control part 3 by the first voltage control
Part 31 processed and the second piezoelectricity control part 53 and form, and the first piezoelectricity controls part 31 and mainly includes the first pressure
Electric device the 2, first metallic gasket 32, first converts piston the 33, first control valve the 34, first control valve seat
35, first control valve back-moving spring the 36, first control valve return spring holder 39, oil return opening 40, first are controlled
Valve oil chamber processed 37, first drain tap 38, second piezoelectricity control part 53 mainly include the second piezoelectric element 9,
Second metallic gasket 52, second converts piston the 51, second control valve the 50, second control valve seat 48, second
Control valve back-moving spring the 47, second control valve return spring holder the 44, second oil-in the 49, second control valve
Oil pocket the 46, second drain tap 45, the first piezoelectric element 2 that the first piezoelectricity controls in part 31 is arranged on control
Crust of the device 1 processed is internal, arranges the first metallic gasket 32, the first conversion piston below the first piezoelectric element 2
33 are stuck on the first metallic gasket 32, and the first conversion piston 33 and the first control valve 34 below are pressed in
On first control valve back-moving spring 36, it is internal that the first control valve 34 is arranged on the first control valve seat 35, and first
Control valve back-moving spring 36 lower end is supported on the first control valve return spring holder 39, the second piezoelectricity control portion
The mounting means that the mounting means of points 53 and the first piezoelectricity control part 31 is identical, and the first control valve 34 is arranged
Upper sealing cone, forms the first control between the first control valve return spring holder 39 and the first control valve seat 35
Valve oil chamber 37, uses alignment pin location between the first control valve return spring holder 39 and the first control valve seat 35,
Second control valve 50 arranges sealing cone and the lower seal conical surface, the second control valve return spring holder 44 and
Form the second control valve oil pocket 46 between two control valve seats 48, the second control valve seat 48 has the second oil-feed
Mouth 49, the second control valve return spring holder 44 has the second drain tap 45.Nozzle segment 5 is sprayed by fuel oil
Mouth portion 54, gas nozzle part 68, needle-valve body fastening nut 6, needle-valve base 58 form, and fuel oil sprays
Mouth portion 54 mainly includes first needle-valve the 61, first needle-valve back-moving spring 59, the 57, first oil-feed of needle-valve cap
Mouth 41, control chamber the 55, the 3rd oil-in 56, oil holding slot 60, gas nozzle part 68 mainly includes second
Needle-valve 63, gag lever post the 42, second needle-valve back-moving spring 43, central oil passage 67, needle chamber 66, pressure tank
62, the 4th oil-in 65, band 64, first needle-valve the 61, second needle-valve 63 is arranged on needle-valve base 58
Inside, first needle-valve the 61, second needle-valve 63 is fixed on injection apparatus shell 4 by needle-valve body fastening nut 6
On, use alignment pin location, needle-valve base 58 and first between needle-valve base 58 and injection apparatus shell 4
Arranging the first needle-valve back-moving spring 59 between needle-valve 61, the first needle-valve back-moving spring 59 upper end withstands on needle-valve cap
On 57, the first needle-valve back-moving spring 59 lower end is pressed on the first needle-valve 61, the first needle-valve 61 and injection dress
Put to be formed between shell 4 and control chamber 55, between the first needle-valve 61 and needle-valve base 58, form oil holding slot 60,
Injection apparatus shell 4 is internal arranges gag lever post 42, and it is internal that gag lever post 42 lower end is enclosed within the second needle-valve 63, the
Two needle-valve back-moving springs 43 are enclosed within gag lever post 42 outer end, and the second needle-valve back-moving spring 43 lower end is supported on second
On needle-valve 63, gag lever post 42 and the second needle-valve 63 arrange central oil passage 67 along axis, and central oil passage 67 is even
Logical second control valve oil pocket 46 and needle chamber 66, form pin between the second needle-valve 63 and injection apparatus shell 4
Valve pocket 66, forms pressure tank 62, needle-valve base 58 and second between the second needle-valve 63 and needle-valve base 58
Arranging annular sealing strip 64 between needle-valve 63, band 64 is connected with the 4th oil-in 65.Oil-feed oil duct 8
Along controlling crust of the device 1 radially in hybrid fuel jet device, and along control crust of the device 1 axially to
In lower entrance injection apparatus shell 4, oil-feed oil duct 8 separates a road branch on control crust of the device 1, point
Propping up and entered in the second piezoelectricity control part 53 by the second oil-in 49, oil-feed oil duct 8 is outside injection apparatus
Shell 4 separates three tunnel branches, and a road branch is entered by the first oil-in 41 and controls in chamber 55, a road branch
Entering in oil holding slot 60 by the 3rd oil-in 56, a road branch enters band by the 4th oil-in 65
In 64；Pressurizer shell 22 is provided with air inlet 16, air inlet 16 by combustion gas compression portion 10 with
Inlet channel 7 connects, and inlet channel 7 enters pressure-bearing by control crust of the device 1, injection apparatus shell 4
In groove 62.Control chamber 55 to connect with oil return opening 40, the oil return opening 40 upper sealing by the first control valve 34
The conical surface and the first control valve oil pocket 37 connect, and the first control valve oil pocket 37 connects with the first drain tap 38, the
Two oil-ins 49 are connected by upper sealing cone and the second control valve oil pocket 46 of the second control valve 50, and second
Control valve oil pocket 46 connects with central oil passage 67, needle chamber 66, and the second control valve oil pocket 46 is by second
The lower seal conical surface and second drain tap 45 of control valve 50 connect.
The double piezoelectricity hybrid fuel jet device electricity of the non pressurized fuel oil-pressurized combustion gases of combination type of the present utility model mixes
Close fuel injection device mainly include combustion gas compression portion 10, double piezoelectricity control part 3, nozzle segment 5,
Pressurizer shell 22, control crust of the device 1, injection apparatus shell 4, inlet channel 7, oil-feed oil duct 8
Deng, combustion gas compression portion 10 is by air inlet 16, charged piston 23, electromagnetic valve coil 11, supercharger control valve
12, the composition such as check valve 19, double piezoelectricity control part 3 and are controlled part 31 and the second piezoelectricity by the first piezoelectricity
Controlling part 53 to form, nozzle segment 5 is by fuel nozzle part 54, gas nozzle part 68, needle-valve body
Fastening nut 6, needle-valve base 58 form.Charged piston 23 is designed to that apex area is big, bottom area is little,
Utilizing both ends of the surface product moment to realize combustion gas supercharging, supercharger control valve 12 arranges sealing cone and lower seal cone
Face, it is achieved switching between pressurised oil inlet and outlet of fuel channel in hybrid fuel jet device, supercharger control valve 12 lower end
Arranging taper surface, balance pressurised oil hydraulic coupling suffered by supercharger control valve 12 lower sealing surface, at the bottom of supercharger control valve
Seat 26 has annular plenum control valve drain tap 25, vents from supercharger control valve 12 and pressurization control valve base
The gap of 26 flows to the pressurised oil of supercharger control valve 12 bottom, it is to avoid supercharger control valve 12 is produced by pressurised oil
Active force upwards thus reduce supercharger control valve 12 control accuracy.First control valve 34 arranges sealing cone
Face, controls fuel oil draining in chamber 55, and the second control valve 50 arranges sealing cone and the lower seal conical surface,
Realize the switching between fuel oil inlet and outlet of fuel channel, the first metallic gasket 32, second in the second control valve oil pocket 46
Metallic gasket 52 plays the effect of isolation, it is to avoid the first piezoelectric element 2 and the second piezoelectric element 9 touch double
Piezoelectricity controls the fuel oil that part 3 upwards leaks.It is close that annular is set between needle-valve base 58 and the second needle-valve 63
Envelope band 64, is connected with oil-feed oil duct 8 by the 4th oil-in 65, seals the combustion leaked by pintle nozzle match-ing parts
Gas, pressure tank 62 plays the effect of stable air pressure, thus reduces the air pressure fluctuation impact on fuel gas injection, pin
Use between valve body fastening nut 14 with injection apparatus shell 4 and threaded and sealing ring is set, it is to avoid burning
Gas in room enters inside hybrid fuel jet device.
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 7 enter in pressure tank 62, and fuel oil enters hybrid fuel jet from oil-feed oil duct 8
Device, is divided into two-way controlling crust of the device 1, and the second oil-in 49 of leading up to enters the second piezoelectricity and controls
In part 53, a road enters injection apparatus shell 4, and is divided into three tunnels on injection apparatus shell 4, a road
Being entered by the first oil-in 41 and control in chamber 55 and oil return opening 40, the 3rd oil-in 56 of leading up to enters
Entering in oil holding slot 60, the 4th oil-in 65 of leading up to enters in band 64.
When electromagnetic valve coil 11 is energized, armature 30 drives supercharger control valve 12 to overcome supercharger control valve reset bullet
The spring force of spring 29 moves upward, and the upper sealing cone of supercharger control valve 12 is pressed on supercharger control valve and resets
On the upper sealing cone of spring base 13, supercharger control valve oil pocket 27 no longer connects with pressurised oil drain tap 28,
Pressurised oil oil-in 14 connects with supercharger control valve oil pocket 27, and pressurised oil is passed through to increase from pressurised oil oil-in 14
Pressure control valve oil pocket 27 enters in charged piston epicoele 15, and pressurised oil acts on charged piston 23 top, gram
Charged piston is pressed for 23 times by the spring force taking charged piston back-moving spring 17, and charged piston epicoele 15 volume increases
Greatly, charged piston cavity of resorption 20 volume reduces, and the combustion gas entering charged piston cavity of resorption 20 is compressed, gas pressure
Power increases.When the gaseous-pressure in charged piston cavity of resorption 20 and the conjunction of the spring force of check valve back-moving spring 18
When power is more than the gaseous-pressure in air inlet 16, check valve 19 moves right, and charged piston cavity of resorption 20 is 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 charging efficiency.
During electromagnetic valve coil 11 power-off, supercharger control valve 12 is downward under the effect of supercharger control valve back-moving spring 29
Motion, the lower seal conical surface of supercharger control valve 12 is pressed on the lower seal conical surface of pressurization control valve base 26,
Pressurised oil oil-in 14 no longer connects with supercharger control valve oil pocket 27, supercharger control valve oil pocket 27 and pressurised oil
Drain tap 28 connects, and pressurised oil leaks into pressurised oil from charged piston epicoele 15 by supercharger control valve oil pocket 27
In drain tap 28, in charged piston epicoele 15, pressure reduces, and when pressure is reduced to certain value, supercharging is lived
Plug back-moving spring 17 is by charged piston 23 jack-up, when the gaseous-pressure in charged piston cavity of resorption 20 and check valve
When making a concerted effort to be less than the gaseous-pressure in air inlet 16 of the spring force of back-moving spring 18, check valve 19 is transported to the left
Dynamic, charged piston cavity of resorption 20 connects with air inlet 16, and combustion gas enters in hybrid fuel jet device.
When first piezoelectric element 2 is energized, the first piezoelectric element 2 extends, and the first control valve 34 overcomes the first control
The spring force of valve back-moving spring 36 processed moves downward, and oil return opening 40 connects with the first control valve oil pocket 37, combustion
Oil quickly leaks into the first drain tap 38 from controlling chamber 55 by oil return opening the 40, first control valve oil pocket 37,
Control chamber 55 fuel pressure to reduce rapidly, when pressure is reduced to certain value, oil holding slot 60 acts on
Fuel oil on the conical surface of the first needle-valve 61, overcomes the spring force of the first needle-valve back-moving spring 59 by the first needle-valve
61 jack-up, fuel oil starts injection.During the first piezoelectric element 2 power-off, the first control valve back-moving spring 36 will
The upper sealing cone of the first control valve 34 is pressed on the upper sealing cone of the first control valve seat 35, the first control
Valve oil chamber 37 processed no longer connects with oil return opening 40, now controls the fuel pressure in chamber 55 and oil holding slot 60
Identical, the first needle-valve 61 presses to needle-valve base 58 under the effect of the first needle-valve back-moving spring 59, and fuel oil is not
Injection.
When second piezoelectric element 9 is energized, the second piezoelectric element 9 extends, and the second control valve 50 overcomes the second control
In the spring force of valve back-moving spring 47 processed and the second control valve oil pocket 46, the hydraulic coupling of fuel oil moves downward, the
The lower seal conical surface of two control valves 50 is pressed on the lower seal conical surface of the second control valve return spring holder 44,
Second control valve oil pocket 46 no longer connects with the second drain tap 45, the second control valve oil pocket 46 and the second oil-feed
Mouth 49 connection, fuel oil passes through second oil-in the 49, second control valve oil pocket 46, center from oil-feed oil duct 8
Oil duct 67 enters in needle chamber 66, and fuel oil acts on the second needle-valve 63 end face, overcomes the second needle-valve to reset
The spring force of spring 43 is by the second needle-valve 63 jack-up, and combustion gas starts injection.During the second piezoelectric element 9 power-off,
The upper sealing cone of the second control valve 50 is pressed on the second control valve seat 48 by the second control valve back-moving spring 47
Upper sealing cone on, the second control valve oil pocket 46 no longer connects with the second oil-in 49, the second control valve
Oil pocket 46 connects with the second drain tap 45, and the fuel oil in needle chamber 66 is controlled by central oil passage 67, second
Valve oil chamber 46 processed leaks in the second drain tap 45, and in needle chamber 66, pressure reduces, when pressure is reduced to necessarily
During value, the second needle-valve 63 is pressed to needle-valve base 58 by the second control valve back-moving spring 47, and combustion gas is not sprayed.
Non pressurized fuel oil-the pressurized combustion gases of combination type double piezoelectricity hybrid fuel jet device electricity hybrid fuel jet dress
Being equipped with three kinds of mode of operations: the first is that the first piezoelectric element 2 is energized, this mode of operation is the injection of pure fuel oil
Pattern；The second is that the first piezoelectric element 2 is initially powered up the second piezoelectric element 9 again and is initially powered up, this work
Pattern is dual injection mode, lights the non-increasing of gas nozzle injection after the fuel oil compression ignition of fuel nozzle injection
Compression ignition gas；The third is electromagnetic valve coil 11 and the first piezoelectric element 2 is first initially powered up the second piezoelectric element again
9 start working, and this mode of operation is also dual injection mode, point after the fuel oil compression ignition of fuel nozzle injection
The pressurized combustion gases of combustion gas nozzle injection.
First piezoelectric element the 2, second piezoelectric element 9 is due to piezoelectric effect deformation, and deformation length reliability is high,
Fuel injection rate control accuracy is high；By changing length conduction time, can be with flexible the first piezoelectric element
2, the deformation length of the second piezoelectric element 9, changes the lift of first control valve the 34, second control valve 50,
Leaving control chamber 55 owing to the first control valve 34 controls fuel oil again, the second control valve 50 controls fuel oil turnover pin
Valve pocket 66, therefore, the maximum lift of first needle-valve the 61, second needle-valve 63 is also with length conduction time
Change adjustable, thus realize the control of fuel injection amount and fuel injection amount；First is controlled according to electromagnetic valve
The motion of needle-valve the 61, second needle-valve 63, because electromagnetic valve is affected by hysteresis loop and solenoid inductance,
The response of spool has delay, the control accuracy of fuel gas injection rule to be affected relative to control signal；And
Needed for combustion gas supercharging, response speed requires, less than response speed requirement needed for fuel gas injection rule, to use electromagnetic valve
Coil 11 controls the motion of charged piston 23 can meet combustion gas pressurization control required precision, it is achieved higher
Combustion gas charging efficiency.
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；Control chamber 55 and oil holding slot 60
In fuel pressure identical, needle chamber 66 is identical with the fuel pressure in band 64, it is to avoid needle-valve is even
Fuel oil static leakage at part；Enter the fuel oil of band 64, make to be accumulated in the combustion gas in pressure tank 62 not
By the clearance leakage between the second needle-valve 63 and needle-valve base 58, thus hybrid fuel jet can be avoided
The combustion gas static leakage of device；During the second needle-valve 63 motion, in pressure tank 62, pin is passed through in combustion gas
Valve coupling upwards leaks, and will not leak to the second needle-valve back-moving spring under the fuel oil effect in band 64
At 43, directly avoid the combustion gas dynamic leakage of hybrid fuel jet device.
As shown in the above description, the double piezoelectricity hybrid fuel jet device master of the non pressurized fuel oil-pressurized combustion gases of combination type
Combustion gas compression portion to be included, double piezoelectricity control part and nozzle segment, and combustion gas compression portion utilizes supercharging electricity
Magnet valve controls the motion of charged piston and realizes combustion gas supercharging, combustion gas boost pressure and combustion gas charging efficiency height, can
Quickly to realize combustion gas boosting jet and the combustion gas switching without boosting jet, meet dual fuel engine difference merit
The rate different requirements to fuel gas injection pressure；Double piezoelectricity control parts utilize two piezoelectric elements to control two pins respectively
It is high that the motion of valve realizes the injection of fuel, fuel jetting stability and motility, it is possible to meets system injection rule
Rule variability requirements, can quickly realize fuel oil injection and the switching of dual fuel injection, meanwhile, gas nozzle
Utilize fuel sealing combustion gas, can preferably solve the problem that combustion gas is leaked by pintle nozzle match-ing parts, can be effectively
Improve dynamic property and the fuel economy of electromotor.
The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of this utility model combination type, including combustion
Gas compression portion, double piezoelectricity control part, nozzle segment, inlet channel, oil-feed oil duct etc..Combustion gas supercharging
Part is made up of air inlet, charged piston, electromagnetic valve coil, supercharger control valve, check valve etc., double piezoelectricity
Control part is controlled part by the first piezoelectricity and the second piezoelectricity control part forms, and nozzle segment is by fuel nozzle
Partly, gas nozzle part, needle-valve body fastening nut, needle-valve base composition.Described oil-feed oil duct is along control
Crust of the device processed is radially in hybrid fuel jet device, and axially downwardly enters spray along controlling crust of the device
In injection device shell, oil-feed oil duct separates a road branch on control crust of the device, and branch passes through the second oil-feed
Mouth enters the second piezoelectricity and controls in part, and oil-feed oil duct separates three tunnel branches at injection apparatus shell, and a road is divided
Propping up to be entered by the first oil-in controls in chamber, and a road branch enters in oil holding slot by the 3rd oil-in, and one
Road branch is entered in band by the 4th oil-in；Pressurizer shell is provided with air inlet, and air inlet leads to
Crossing combustion gas compression portion to connect with inlet channel, inlet channel is by controlling crust of the device, injection apparatus shell
Enter in pressure tank.
Electromagnetic valve coil is arranged in pressurizer shell, and armature is positioned at below electromagnetic valve coil, pressurization control
The upper end of valve is stuck on armature by locating snap ring, and supercharger control valve lower end is multiple through the supercharger control valve below armature
Position spring base is pressed on pressurization control valve base, and check valve right-hand member is connected by screw and is fixed on the little bullet of check valve
On spring abutment, check valve back-moving spring left end is stuck on one-way valve seat by check valve big spring seat, and check valve is multiple
Check valve left end is pressed on one-way valve seat by position spring right-hand member by check 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.
First piezoelectricity control part includes the first piezoelectric element and the first control valve.First piezoelectric element is arranged on
Controlling inside crust of the device, arrange the first metallic gasket below the first piezoelectric element, the first conversion piston is stuck in
On first metallic gasket, the first conversion piston and the first control valve below are pressed in the first control valve reset bullet
On spring, the first control valve is arranged on inside the first control valve seat, and the first control valve back-moving spring lower end is supported on
On first control valve return spring holder, the second piezoelectricity controls mounting means and the first piezoelectricity control part of part
Mounting means identical.
First control valve arranges sealing cone, between the first control valve return spring holder and the first control valve seat
Form the first control valve oil pocket, between the first control valve return spring holder and the first control valve seat, use alignment pin
Location；Second control valve arranges sealing cone and the lower seal conical surface, the second control valve return spring holder and
Form the second control valve oil pocket between two control valve seats, the second control valve seat has the second oil-in, second
The second drain tap is had on control valve return spring holder.
Fuel nozzle part includes the first needle-valve.Arrange the first needle-valve between needle-valve base and the first needle-valve to reset
Spring, the first needle-valve back-moving spring upper end withstands on needle-valve cap, and the first needle-valve back-moving spring lower end is pressed in first
On needle-valve, formed between the first needle-valve and injection apparatus shell and control chamber, between the first needle-valve and needle-valve base
Form oil holding slot.
Gas nozzle part includes gag lever post and the second needle-valve.Gag lever post lower end is enclosed within inside the second needle-valve, the
Two needle-valve back-moving springs are enclosed within gag lever post outer end, and the second needle-valve back-moving spring lower end is supported on the second needle-valve,
Gag lever post and the second needle-valve arrange central oil passage along axis, and central oil passage connects the second control valve oil pocket and needle-valve
Chamber, forms needle chamber, is formed between the second needle-valve and needle-valve base between the second needle-valve and injection apparatus shell
Pressure tank, arranges annular sealing strip, band and the 4th oil-in and is connected between needle-valve base and the second needle-valve.
Controlling chamber to connect with oil return opening, oil return opening passes through upper sealing cone and first control valve of the first control valve
Oil pocket connects, the first control valve oil pocket and the connection of the first drain tap；Second oil-in is by the second control valve
Upper sealing cone and the connection of the second control valve oil pocket, the second control valve oil pocket connects with central oil passage, needle chamber,
Second control valve oil pocket is connected by the lower seal conical surface and second drain tap of the second control valve.
Claims (3)
1. the double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of combination type, is characterized in that: combustion
Gas compression portion, include control crust of the device, injection apparatus shell, needle-valve base, the first piezoelectric and
Second piezoelectric, controls crust of the device and is arranged in injection apparatus shell, and needle-valve floor installation is at injection dress
Put below shell, control to arrange oil-feed oil duct and inlet channel in crust of the device, injection apparatus shell is arranged
First drain tap and the second drain tap, needle-valve base includes the first base and the second base；
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, arranging pressurized combustion gases outlet below charged piston cavity of resorption, supercharging is fired
Gas outlet inlet channel；
Described first piezoelectric include the first piezoelectric element, first conversion piston, the first control valve, first
Control valve seat, the first control valve back-moving spring, the first control valve return spring holder, the first needle-valve, the first pin
Valve back-moving spring, the first piezoelectric element is arranged in control crust of the device, arranges the below the first piezoelectric element
One metallic gasket, the first conversion piston is stuck on the first metallic gasket, arranges first below the first conversion piston
Control valve, the first control valve is pressed on the first control valve back-moving spring and the first control valve is positioned at the first control valve
Seat is internal, and the first control valve back-moving spring lower end is supported on the first control valve return spring holder, and first controls
Sealing cone is set on valve, between the first control valve return spring holder and the first control valve seat, forms the first control
Valve oil chamber processed, forms oil back chamber, the first control valve oil pocket connection between the first control valve and the first control valve seat
First drain tap, the first needle-valve is arranged in the first base, the upper end of the first needle-valve and injection apparatus shell it
Between formed control chamber, control chamber by first oil-in connection oil-feed oil duct and by oil return opening connection oil back chamber,
First needle-valve back-moving spring is placed on the first needle-valve, the apical support of the first needle-valve back-moving spring on needle-valve cap,
Needle-valve cap is positioned in the first base and is positioned at below injection apparatus shell, and the lower end of the first needle-valve back-moving spring is propped up
Support, on the first needle-valve, forms oil holding slot between the first needle-valve and the first base, oil holding slot passes through the 3rd oil-feed
Mouth connection oil-feed oil duct；
Described second piezoelectric include the second piezoelectric element, second conversion piston, the second control valve, second
Control valve seat, the second control valve back-moving spring, the second control valve return spring holder, the second needle-valve, the second pin
Valve back-moving spring, gag lever post, the second piezoelectric element is arranged in control crust of the device, under the second piezoelectric element
Side arranges the second metallic gasket, and the second conversion piston is stuck on the second metallic gasket, below the second conversion piston
Arranging the second control valve, the second control valve is pressed on the second control valve back-moving spring and the second control valve is positioned at
Inside two control valve seats, the second control valve back-moving spring lower end is supported on the second control valve return spring holder,
Sealing cone and the lower seal conical surface, the second control valve return spring holder and the second control are set in the second control valve
The second control valve oil pocket, the second control valve and the second control valve back-moving spring below is formed between valve seat processed
Forming draining chamber between Zuo, form oil suction chamber between the second control valve and the second control valve seat, oil suction chamber passes through
Second oil-in connection oil-feed oil duct, draining chamber connects the second drain tap, and gag lever post is arranged on the second control valve
Below return spring holder, gag lever post lower end is enclosed within inside the second needle-valve, and the second needle-valve is arranged in the second base,
Second needle-valve back-moving spring is enclosed within outside gag lever post, and the second needle-valve back-moving spring lower end is supported on the second needle-valve,
Gag lever post and the second needle-valve arrange central oil passage along axis, form needle chamber between gag lever post and the second needle-valve,
Central oil passage is respectively communicated with the second control valve oil pocket and needle chamber, difference shape between the second needle-valve and the second base
Circularizing band and pressure tank, annular sealing strip is by the 4th oil-in connection oil-feed oil duct, and pressure tank is even
Logical inlet channel.
The double piezoelectricity fuel combination spray of the non pressurized fuel oil-pressurized combustion gases of combination type the most according to claim 1
Injection device, is characterized in that: during the first piezoelectric element energising, the first piezoelectric element elongation, the first control valve gram
The spring force taking the first control valve back-moving spring moves downward, and oil return opening connects with oil back chamber, and fuel oil is from control
Chamber leaks in the first drain tap by oil return opening, the first control valve oil pocket, controls intracavity fuel pressure and reduces,
Oil holding slot acts on the fuel oil on the first face of needle seating, overcomes the spring force of the first needle-valve back-moving spring by
One needle-valve jack-up, fuel oil sprays；During the first piezoelectric element power-off, the first control valve back-moving spring is controlled first
The upper sealing surface of valve processed is pressed on the first control valve seat, and the first control valve oil pocket disconnects with oil return opening, controls chamber
Identical with the fuel pressure in oil holding slot, the first needle-valve presses to first under the effect of the first needle-valve back-moving spring
Base, fuel oil does not sprays.
The double piezoelectricity mixing combustion of the non pressurized fuel oil-pressurized combustion gases of combination type the most according to claim 1 and 2
Material injection apparatus, is characterized in that: during the second piezoelectric element energising, and the second piezoelectric element elongation, second controls
Valve overcomes the hydraulic coupling of fuel oil in the spring force of the second control valve back-moving spring and the second control valve oil pocket to transport downwards
Dynamic, the lower sealing surface of the second control valve is pressed on the second control valve return spring holder, the second control valve oil pocket with
Second drain tap disconnects, and the second control valve oil pocket and the second oil-in connect, and fuel oil passes through the from oil-feed oil duct
Two oil-ins, the second control valve oil pocket, central oil passage enter in needle chamber, and fuel oil acts on the second needle-valve end
On face, overcome the spring force of the second needle-valve back-moving spring by the second needle-valve jack-up, fuel gas injection；Second piezoelectricity
During element power-off, the upper sealing surface of the second control valve is pressed in the second control valve seat by the second control valve back-moving spring
On, the second control valve oil pocket and the second oil-in disconnect, the second control valve oil pocket and the connection of the second drain tap,
Fuel oil in needle chamber leaks in the second drain tap, in needle chamber by central oil passage, the second control valve oil pocket
Pressure reduces, and the second needle-valve is pressed to the second base by the second control valve back-moving spring, and combustion gas is not sprayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338785.8U CN205714518U (en) | 2016-04-21 | 2016-04-21 | The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of combination type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338785.8U CN205714518U (en) | 2016-04-21 | 2016-04-21 | The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of combination type |
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| Publication Number | Publication Date |
|---|---|
| CN205714518U true CN205714518U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620338785.8U Withdrawn - After Issue CN205714518U (en) | 2016-04-21 | 2016-04-21 | The double piezoelectricity hybrid fuel jet device of the non pressurized fuel oil-pressurized combustion gases of combination type |
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| CN (1) | CN205714518U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756821A (en) * | 2016-04-21 | 2016-07-13 | 哈尔滨工程大学 | Combined non-pressurized fuel oil and pressurized fuel gas dual piezoelectric mixed fuel injection device |
| CN111482772A (en) * | 2020-04-21 | 2020-08-04 | 四川航天中天动力装备有限责任公司 | Processing technology of combined fuel nozzle |
-
2016
- 2016-04-21 CN CN201620338785.8U patent/CN205714518U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756821A (en) * | 2016-04-21 | 2016-07-13 | 哈尔滨工程大学 | Combined non-pressurized fuel oil and pressurized fuel gas dual piezoelectric mixed fuel injection device |
| CN111482772A (en) * | 2020-04-21 | 2020-08-04 | 四川航天中天动力装备有限责任公司 | Processing technology of combined fuel nozzle |
| CN111482772B (en) * | 2020-04-21 | 2021-04-20 | 四川航天中天动力装备有限责任公司 | Processing technology of combined fuel nozzle |
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Granted publication date: 20161123 Effective date of abandoning: 20180518 |