CN205908402U - Modular oil spout of pressure boost electromagnetism jet -propelled fuel injection apparatus that mixes of non -supercharged piezoelectricity - Google Patents
Modular oil spout of pressure boost electromagnetism jet -propelled fuel injection apparatus that mixes of non -supercharged piezoelectricity Download PDFInfo
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- CN205908402U CN205908402U CN201620338739.8U CN201620338739U CN205908402U CN 205908402 U CN205908402 U CN 205908402U CN 201620338739 U CN201620338739 U CN 201620338739U CN 205908402 U CN205908402 U CN 205908402U
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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 utility model aims to provide a modular oil spout of pressure boost electromagnetism jet -propelled fuel injection apparatus that mixes of non -supercharged piezoelectricity, including fuel pressure boost part, electromagnetism piezoelectric control part, nozzle portion grade. The utility model discloses the oil -fired pressure boost of supercharged piston control is passed through by the pressure boost solenoid valve to fuel pressure boost part, can realize fast that fuel pressure boost injection and fuel do not have the switching that the pressure boost is sprayed, satisfies the different requirements of the different power of dual -fuel engine to fuel injection pressure, the electromagnetism the piezoelectric control part realizes realizing gas jet with piezoelectric element control gas burner by fuel injection with fuel solenoid valve control fuel nozzle, and the gas jet flexibility is high, through adjustment pressure boost solenoid valve, fuel solenoid valve and piezoelectric element's operating condition and process line, mixes fuel solenoid valve 0 and can realize fuel solenoid valve 1 fuel injection, pressure boost fuel injection, the two fuel solenoid valve 5 of fuel solenoid valve 1 fuel / gas and the two four kinds of fuel solenoid valve 7 of fuel solenoid valve 5 of pressure boost fuel / gas.
Description
Technical field
The utility model relates to a kind of fuel injection device, specifically dual fuel engine fuel injection dress
Put.
Background technology
Development engine replacing fuel is to solve energy shortage and problem of environmental pollution effectively one of means.Gas
Fuel has the electromotor of good development prospect and substitutes combustion because rich reserves, the cheap and low advantage of disposal of pollutants become
Material.Although only with a kind of gas engine discharge cleaning of gaseous fuel, gases used fuel energy density is low, and fuel disappears
Consumption is big, limited by use direction；And adopt diesel oil as light fluid, when gaseous fuel uses as the dual fuel engine of main fuel
Flexibly can switch between two kinds of fuel, replacement of fuel rate is high, has preferable dynamic property, economy and emission performance.
Adopting gas nozzle and the fuel nozzle of electromagnetic control type existing in-cylinder direct-jet dual fuel engine, fuel oil increases more
Pressure adopts high-pressure pump to compress fuel oil to authorized pressure, and the weak point existing has: gas nozzle and fuel nozzle are independently installed
On cylinder cap, size and installation site are limited by cylinder cap；High-pressure pump structure is complicated, the transmission pipeline from pump end to fuel nozzle
Long, fuel pressure fluctuation is big；Gas nozzle utilizes pressure gas jack-up needle-valve, but because the compressibility of gas is strong, is unfavorable for reality
The precise control of existing needle valve movement, fuel gas injection is unstable；Additionally, during fuel gas injection, the motion combustion gas with needle-valve is led to
The gap crossed between needle-valve and valve body leaks aggravation to electromagnetic valve end, leads to fuel gas injection pressure and injection rate to reduce, to combustion
The stability of gas jet has harmful effect, have impact on engine power performance and fuel economy.
Content of the invention
The purpose of this utility model is that offer is capable of non pressurized fuel oil injection, supercharging fuel injection, non pressurized combustion
The combination type supercharging electromagnetic fuel injection of oil/combustion gas dual fuel injection and supercharging fuel/four kinds of mode of operations of combustion gas dual fuel injection-non-
Supercharging piezoelectricity jet hybrid fuel jet device.
The purpose of this utility model is achieved in that
This utility model combination type is pressurized electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet device, it is characterized in that:
Including fuel pressurization part, injection apparatus shell, control device shell, electromagnet portion, piezoelectric, needle-valve base, control dress
Put shell to be arranged in injection apparatus shell, oil-feed oil duct is set in control device shell, needle-valve base is fastened by needle-valve body
Nut is arranged on below injection apparatus shell, and needle-valve base includes electromagnetic base and piezoelectricity base；
Described fuel pressurization part include pressurizer 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
Put shell and be arranged on above control device shell, setting pressurised oil oil-in, pressurised oil drain tap, oil-feed on pressurizer shell
Mouthful, boost electromagnetic valve coil is arranged in pressurizer 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 supercharger control valve arranges sealing cone and lower sealing cone, supercharging control
Form supercharger control valve oil pocket, pressurised oil oil-in passes through pressurization control between valve return spring holder processed and pressurization control valve base
The lower sealing cone of valve is connected 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 has supercharger control valve drain tap, and charged piston is arranged on supercharger control valve
The lower section of base, forms charged piston epicoele, charged piston epicoele and supercharging control between pressurization control valve base and charged piston
Valve oil chamber processed connection, in the middle part of pressurizer shell and charged piston between form charged piston back-moving spring chamber, charged piston is multiple
Position spring is placed on charged piston and is located at charged piston back-moving spring intracavity portion, pressurizer shell and charged piston lower end it
Between charged piston cavity of resorption is set, check valve is arranged in pressurizer shell, and the import of check valve is connected with oil-in, unidirectional
The outlet charged piston cavity of resorption of valve, setting supercharging fuel outlet below charged piston cavity of resorption；
Described electromagnet portion includes electromagnetic valve coil, armature, the first control valve, the first control valve seat, the first control valve again
Position spring, the first control valve return spring holder, control piston, electromagnetic valve coil and armature are arranged on control device enclosure,
For armature chamber at armature place, the first control valve upper end is stuck on armature by locating snap ring, and the first control valve passes through the first control
Valve return spring holder is simultaneously pressed on the first control valve seat, is formed and control between the bottom of the first control valve and the first control valve seat
Valve draining chamber, forms draining chamber, the first control valve back-moving spring between the first control valve return spring holder and the first control valve seat
It is enclosed within the first control valve, the top of the first control valve back-moving spring withstands on the first control valve return spring holder, the first control
The bottom of valve back-moving spring is stuck in the first control valve, the lower sealing cone of the first control valve setting, sets below the first control valve seat
Put control cavity, control the upper end of piston to be arranged in control cavity and and control formation control chamber between cavity, the first control
Setting drain path and the first drain tap on valve return spring holder processed, drain path connection armature chamber and draining chamber, the first draining
Mouth connection armature chamber, setting oil return opening and control valve drain tap on the first control valve seat, control chamber is passed through in control device shell
The first oil-in connection oil-feed oil duct, one end connection control chamber of oil return opening, the other end of oil return opening passes through the first control valve
Lower sealing surface realize and the connection in draining chamber or disconnection, control valve drain tap connects control valve draining chamber, controls under piston
End connects the first needle-valve return spring holder, and the first needle-valve is arranged in electromagnetic base and is located under the first needle-valve return spring holder
Side, controls and is cased with the first needle-valve back-moving spring on piston, forms oil holding slot between the first needle-valve and electromagnetic base, and the first needle-valve is multiple
In the spring base of position, the 3rd oil-in is set, oil holding slot passes through the 3rd oil-in and connects oil-feed oil duct；
Described piezoelectric includes piezoelectric element, conversion piston, the second control valve, the second control valve seat, the second control valve
Return spring holder, gag lever post, the second needle-valve, the second needle-valve back-moving spring, piezoelectric element is arranged in control device shell, piezoelectricity
Metallic gasket is set below element, and conversion piston upper end is stuck on metallic gasket, arranges the second control valve below conversion piston, the
Two control valves are arranged on inside the second control valve seat, the second control valve arrange sealing cone and lower sealing cone, upper close
It is cased with the second control valve back-moving spring, the second control valve back-moving spring lower end is supported on second between the envelope conical surface and lower sealing cone
On control valve return spring holder, formation control valve oil pocket between the second control valve return spring holder and the second control valve seat, second
The second oil-in being communicated with oil-feed oil duct is had on control valve seat, the second control valve return spring holder has the second draining
Mouthful, the second oil-in passes through the upper sealing cone of the second control valve and control valve oil pocket is realized connecting or disconnecting, control valve oil pocket
Realize connecting or disconnecting by the lower sealing cone of the second control valve and the second drain tap, it is multiple that gag lever post is arranged on the second control valve
Below the spring base of position, the lower end of gag lever post is placed on inside the second needle-valve, and the second needle-valve back-moving spring is enclosed within outside gag lever post, and second
The lower end of needle-valve back-moving spring is supported on the second needle-valve, and the second needle-valve is arranged in the piezoelectricity base of needle-valve base, the second pin
Form needle chamber, gag lever post and the second needle-valve arrange central oil passage along axis, and central oil passage is even between valve and injection apparatus shell
Logical control valve oil pocket and needle chamber, setting band and pressure tank between the second needle-valve and piezoelectricity base, in injection apparatus shell
The 4th oil-in being communicated with oil-feed oil duct is set, and band is connected with the 4th oil-in, injection apparatus shell arranges air inlet
Passage, pressure tank connects inlet channel.
This utility model can also include:
1st, during piezoelectric element energising, piezoelectric element extends, and the second control valve overcomes the spring of the second control valve back-moving spring
In power and control valve oil pocket, the hydraulic coupling of fuel oil moves downward, and the lower sealing surface of the second control valve is pressed in the second control valve reset bullet
On spring abutment, control valve oil pocket and the second drain tap disconnect, and control valve oil pocket is connected with the second oil-in, and fuel oil leads to from oil-feed oil duct
Cross the second oil-in, control valve oil pocket, central oil passage enter needle chamber in, fuel oil acts on the second needle-valve, overcomes the second pin
By the second needle-valve jack-up, combustion gas starts to spray the spring force of valve back-moving spring；During piezoelectric element power-off, the second control valve reset bullet
The upper sealing surface of the second control valve is pressed on the second control valve seat spring, and control valve oil pocket and the second oil-in disconnect, control valve
Oil pocket is connected with the second drain tap, and the fuel oil in needle chamber leaks in the second drain tap by central oil passage, control valve oil pocket, pin
Valve cavity pressure reduces, and the second needle-valve is pressed to needle-valve base by the second control valve back-moving spring, and combustion gas is not sprayed.
2nd, during electromagnetic valve coil energising, armature drive the first control valve overcome the spring force of the first control valve back-moving spring to
Upper motion, oil return opening is connected with drain path, and fuel oil leaks into the first drain tap from control chamber by oil return opening, drain path, control
Intracavity fuel pressure processed reduces, and acts on the fuel oil on the first needle-valve, overcome the spring of the first needle-valve back-moving spring in oil holding slot
First needle-valve jack-up, fuel oil are sprayed by power；During electromagnetic valve coil power-off, the first control valve is pressed in by the first control valve back-moving spring
On first control valve seat, oil return opening is disconnected with drain path, and the first needle-valve presses to pin in the presence of the first needle-valve back-moving spring
Valve base, fuel oil does not spray.
Advantage of the present utility model is: controls charged piston to realize the supercharging of fuel oil, fuel pressurization with boost electromagnetic valve
Pressure and fuel pressurization efficiency high, can quickly realize fuel pressurization injection and the switching of fuel oil no boosting jet, meet double combustions
The difference requirement to fuel-injection pressure for the material electromotor different capacity；Fuel nozzle is controlled to realize fuel oil spray with fuel solenoid valve
Penetrate, control gas nozzle to realize fuel gas injection with piezoelectric element, fuel injection motility is high, it is possible to achieve fuel oil injection and double combustion
The switching of gas jet；By adjusting working condition and the job order of boost electromagnetic valve, fuel solenoid valve and piezoelectric element, mixing
Fuel injection device can realize non pressurized fuel oil injection, supercharging fuel injection, non pressurized oil and gas dual fuel injection and increasing
Pressure four kinds of mode of operations of oil and gas dual fuel injection；Gas nozzle adopts piezoelectric element to control the motion of needle-valve, needle lift
Adjustable, fuel gas injection amount and fuel gas injection rate control accuracy are high；Fuel nozzle adopts the motion of solenoid valve control needle-valve, and fuel oil sprays
The amount of penetrating and fuel oil injection timing are controlled；Gas nozzle fuel oil controls needle-valve cavity pressure to realize the motion of needle-valve, improves combustion
Pneumatic jack opens the fuel gas injection wild effect that needle-valve leads to, and can preferably meet system jetting stability requirement；Gas nozzle
Needle chamber and pintle nozzle match-ing parts at fuel oil be same oil, oil pressure is equal, it is to avoid the fuel oil static leakage at pintle nozzle match-ing parts；
Gas nozzle fuel sealing combustion gas, 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.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is fuel pressurization partial schematic diagram of the present utility model；
Fig. 3 is that electromagnetism of the present utility model-piezoelectricity controls partial schematic diagram；
Fig. 4 is this utility model nozzle segment schematic diagram.
Specific embodiment
Illustrate below in conjunction with the accompanying drawings and this utility model be described in more detail:
In conjunction with Fig. 1～4, combination type of the present utility model is pressurized electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet
Device mainly includes fuel pressurization part 10, electromagnetism-piezoelectricity control section 2, nozzle segment 5, pressurizer shell 22, controls dress
Put shell 1, injection apparatus shell 3, inlet channel 6, oil-feed oil duct 9.Fuel pressurization part 10 is gone out by oil-in 16, supercharging fuel
Mouthfuls 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, boost electromagnetic valve coil 11, supercharging armature 30, pressurization control
Valve 12, supercharger 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, and boost electromagnetic valve coil 11 is pacified
Be contained in pressurizer shell 22, supercharging armature 30 is located at below boost electromagnetic valve coil 11, the upper end of supercharger control valve 12 by
Locating snap ring is stuck on supercharging armature 30, and supercharger control valve 12 lower end passes through the supercharger control valve back-moving spring of supercharging armature 30 lower section
Seat 13 is pressed on pressurization control valve base 26, and check valve 19 right-hand member is connected by screw and is fixed on check valve little spring seat, single
It is stuck on one-way valve seat to valve back-moving spring 18 left end by check valve big spring seat, check valve back-moving spring 18 right-hand member passes through single
To valve little spring seat, check valve 19 left end is pressed on one-way valve seat, supercharger control valve return spring holder 13 and supercharger control valve bottom
Form supercharger control valve oil pocket 27, pressurised oil oil-feed oil circuit 14 passes through lower sealing cone and the increasing of supercharger control valve 12 between seat 26
Pressure control valve oil pocket 27 connects, and supercharger control valve oil pocket 27 passes through upper sealing cone and the pressurised oil draining oil of supercharger control valve 12
Road 28 connects, and pressurization control valve base 26 has supercharger control valve drain tap 25, and supercharging is installed in pressurization control valve base 26 lower end
Piston 23, forms charged piston epicoele 15, charged piston epicoele 15 and increasing between pressurization control valve base 26 and charged piston 23
Pressure control valve oil pocket 27 connects, and arranges charged piston back-moving spring chamber between pressurizer shell 22 and charged piston 23 outer end
24, charged piston back-moving spring 17 is arranged on inside charged piston back-moving spring chamber 24, pressurizer shell 22 and charged piston
Charged piston cavity of resorption 20, charged piston cavity of resorption 20 connection oil-in 16 and supercharging fuel outlet 21, supercharging are set between 23 lower ends
Fuel outlet 21 is connected with oil-feed oil duct 9.Electromagnetism-piezoelectricity control section 2 is by Electromagnetic Control part 31 and piezoelectricity control section 54
Composition, Electromagnetic Control part 31 mainly includes electromagnetic fuel valve coil 32, armature 33, the first control valve 38, the first control valve seat
40th, the first control valve back-moving spring 37, the first control valve return spring holder 36, the first oil-in 43, control piston 4, control chamber
42nd, oil return opening 41, drain path 34, the first drain tap 35, control valve drain tap 39, piezoelectricity control section 54 mainly includes piezoelectricity
Element 53, metallic gasket 52, conversion piston 51, the second control valve 50, the second control valve seat 48, the second control valve back-moving spring
47th, the second control valve return spring holder 44, the second oil-in 49, control valve oil pocket 46, the second drain tap 45, fuel solenoid valve line
Circle 32 and armature 33 are arranged on inside control device shell 1, and the first control valve 38 upper end is stuck on armature 33 by locating snap ring, and first
Control valve 38 lower end is pressed on the first control valve seat 40, and the first control valve back-moving spring 37 top is pressed in the first control valve reset bullet
On spring abutment 36, the first control valve back-moving spring 37 bottom is stuck in the first control valve 38, the lower sealed taper of the first control valve 38 setting
Face, using positioning finger setting between the first control valve return spring holder 36 and the first control valve seat 40, the first control valve seat 40 with
Control between cavity using positioning finger setting, control and form control chamber 42, the first control valve seat 40 between piston 4 and control cavity
Upper setting oil return opening 41 and control valve drain tap 39, on the first control valve return spring holder 36, setting drain path 34 and first is let out
Hydraulic fluid port 35, the first oil-in 43 is connected with control chamber 42, oil return opening 41, and oil return opening 41 passes through the lower sealed taper of the first control valve 38
Face is connected with drain path 34, and drain path 34 is connected with the first drain tap 35 by fuel solenoid valve end, and piezoelectric element 53 is pacified
It is contained in inside control device shell 1, piezoelectric element 53 lower section setting metallic gasket 52, conversion piston 51 is stuck in metallic gasket 52
On, convert piston 51 and the second control valve 50 below is pressed on the second control valve back-moving spring 47, the second control valve 50 is pacified
It is contained in inside the second control valve seat 48, the second control valve back-moving spring 47 lower end is supported on the second control valve return spring holder 44
On, the second control valve 50 setting above sealing cone and lower sealing cone, the second control valve return spring holder 44 and the second control valve
Form control valve oil pocket 46 between seat 48, the second control valve seat 48 has the second oil-in 49, the second control valve back-moving spring
Second drain tap 45 is had on seat 44, the second oil-in 49 passes through upper sealing cone and the control valve oil pocket 46 of the second control valve 50
Connection, control valve oil pocket 46 is connected with central oil passage 69, needle chamber 68, and control valve oil pocket 46 passes through close under the second control valve 50
The envelope conical surface is connected with the second drain tap 45.Nozzle segment 5 is by fuel nozzle part 55, gas nozzle part 70, needle-valve body fastening
Nut 67, needle-valve base 60 form, fuel nozzle part 55 mainly include the first needle-valve 61, the first needle-valve back-moving spring 56,
One needle-valve return spring holder 57, spacing orifice plate 58, the 3rd oil-in 59, oil holding slot 62, gas nozzle part 70 mainly includes
Two needle-valves 64, gag lever post 8, the second needle-valve back-moving spring 7, central oil passage 69, needle chamber 68, pressure tank 63, the 4th oil-in 66,
Band 65, the first needle-valve 61, the second needle-valve 64 are arranged on inside needle-valve base 60, and the first needle-valve 61, the second needle-valve 64 pass through
Needle-valve body fastening nut 67 is fixed on injection apparatus shell 3, using positioning between needle-valve base 60 and injection apparatus shell 3
Finger setting, the first needle-valve back-moving spring 56 is arranged on outside control piston 4, and the first needle-valve back-moving spring 56 is supported on the first needle-valve
On return spring holder 57, the first needle-valve return spring holder 57 is connected with the first needle-valve 61 and is arranged on inside spacing orifice plate 58, the
Form oil holding slot 62 between one needle-valve 61 and needle-valve base 60, between spacing orifice plate 58 and needle-valve base 60, adopt alignment pin fixed
Position, the internal setting gag lever post 8 of injection apparatus shell 3, gag lever post 8 lower end is enclosed within inside the second needle-valve 64, the second needle-valve reset bullet
Spring 7 is arranged on gag lever post 8 outer end, and the second needle-valve back-moving spring 7 lower end is supported on the second needle-valve 64, gag lever post 8 and the second pin
Valve 64 arranges central oil passage 69, central oil passage 69 connection control valve oil pocket 46 and needle chamber 68, the second needle-valve 64 and spray along axis
Form needle chamber 68 between injection device shell 3, between the second needle-valve 64 and needle-valve base 60, form pressure tank 63, needle-valve base 60
With second arrange annular sealing strip 65 between needle-valve 64, band 65 is connected with the 4th oil-in 66.Pressurizer shell 22 sets
It is equipped with oil-in 16, oil-in 16 is connected with oil-feed oil duct 9 by fuel pressurization part 10, and oil-feed oil duct 9 is outside control device
Two-way branch is separated on shell 1, a road branch enters in control chamber 42 by the first oil-in 43, and a road branch passes through the second oil-feed
Mouthfuls 49 enter in piezoelectricity control sections 54, and oil-feed oil duct 9 separates two-way branch in injection apparatus shell 3, and a road branch passes through the
Three oil-in 59 enters in oil holding slot 62, and a road branch is entered in band 65 by the 4th oil-in 66；Inlet channel 7 passes through
Injection apparatus shell 3 enters in pressure tank 62.
Combination type supercharging electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet device of the present utility model mainly includes
Fuel pressurization part 10, electromagnetism-piezoelectricity control section 2, nozzle segment 5, pressurizer shell 22, control device shell 1, injection
Crust of the device 3, inlet channel 6, oil-feed oil duct 9, fuel pressurization part 10 is by oil-in 16, charged piston 23, boost electromagnetic valve
Coil 11, supercharger control valve 12, check valve 19 etc. form, and electromagnetism-piezoelectricity control section 2 is by Electromagnetic Control part 31 and voltage control
Part 54 processed forms, and nozzle segment 5 is by fuel nozzle part 55, gas nozzle part 70, needle-valve body fastening nut 67, needle-valve bottom
Seat 60 composition.Charged piston 23 is designed to that apex area is big, bottom area is little, realizes fuel pressurization using two ends difference in areas,
The upper sealing cone of supercharger control valve 12 setting and lower sealing cone, realize in hybrid fuel jet device pressurised oil inlet and outlet of fuel channel it
Between switching, supercharger control valve 12 lower end arrange taper surface, balance supercharger control valve 12 lower sealing surface suffered by pressurised oil hydraulic pressure
Power, pressurization control valve base 26 has annular plenum control valve drain tap 25, vents from supercharger control valve 12 and supercharger control valve
The gap of base 26 flows to the pressurised oil of supercharger control valve 12 bottom, it is to avoid pressurised oil produces work upwards to supercharger control valve 12
Firmly thus reducing supercharger control valve 12 control accuracy, the lower sealing cone of the first control valve 38 setting, control control chamber 42 internal combustion
Oily draining, the second control valve 50 upper sealing cone of setting and lower sealing cone, realize fuel oil inlet and outlet of fuel channel in control valve oil pocket 46
Between switching, drain path 34 connected with the first drain tap 35 by fuel solenoid valve end, and fuel solenoid valve end is full of fuel oil,
The shock and vibration of armature 33 up and down motion can be reduced, thus improving the stability of fuel solenoid valve work, and during fuel oil draining
Flow through fuel solenoid valve end, take away fuel solenoid valve heat, play the effect of cooling fuel solenoid valve, control valve drain tap 39 is let out
Walk to flow to the fuel oil of the first control valve 38 bottom, metallic gasket 52 from the gap of the first control valve 38 and the first control valve seat 40
Effect to isolation, it is to avoid piezoelectric element 53 touches the fuel oil that piezoelectricity control section 54 leaks upwards, the first needle-valve reset bullet
First needle-valve 61 is pressed to needle-valve base 60 by spring 56, and the second needle-valve 64 is pressed to needle-valve base 60, pin by the second needle-valve back-moving spring 7
Between valve base 60 and the second needle-valve 64, annular sealing strip 65 is set, is connected with oil-feed oil duct 9 by the 4th oil-in 66, sealing
The combustion gas being leaked by pintle nozzle match-ing parts, pressure tank 63 plays the effect of stable air pressure, thus reducing air pressure fluctuation to fuel gas injection
Impact.
During dual fuel engine work, fuel oil is entered by charged piston cavity of resorption 20, supercharging fuel outlet 21 from oil-in 16
Enter oil-feed oil duct 9, oil-feed oil duct 9 is divided into three tunnels in control device shell 1, lead up to the second oil-in 49 and enter piezoelectricity control
In part 54, lead up to the first oil-in 43 and enter in control chamber 42 and oil return opening 41, a road enters injection apparatus shell 3,
And it is divided into two-way on injection apparatus shell 3, lead up to the 3rd oil-in 59 and enter in oil holding slot 62, lead up to the 4th and enter
Hydraulic fluid port 66 enters in band 65.
During boost electromagnetic valve coil 11 energising, supercharging armature 30 drives supercharger control valve 12 to overcome supercharger control valve 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 is no longer connected with pressurised oil drain tap 28, pressurised oil oil-in 14 and pressurization control
Valve oil chamber 27 connects, and pressurised oil enters charged piston epicoele 15 from pressurised oil oil-in 14 by supercharger control valve oil pocket 27,
Pressurised oil acts on charged piston 23 top, overcomes the spring force of charged piston back-moving spring 17 to push charged piston 23, increases
Pressure piston upper chamber 15 volume increases, and charged piston cavity of resorption 20 volume reduces, and the fuel oil entering charged piston cavity of resorption 20 is compressed, combustion
Oil pressure increases.When the fuel pressure in charged piston cavity of resorption 20 and check valve back-moving spring 18 spring force make a concerted effort be more than into
During fuel pressure in hydraulic fluid port 16, check valve 19 moves right, and charged piston cavity of resorption 20 is no longer connected with oil-in 16, it is to avoid
Supercharging fuel leaks it is ensured that fuel pressurization efficiency from oil-in 16.During boost electromagnetic valve coil 11 power-off, supercharger control valve 12
Move 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-in 14 is no longer connected with supercharger control valve oil pocket 27, pressurization control valve oil
Chamber 27 is connected 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, reduced pressure in charged piston epicoele 15, when reduced pressure is to certain value, charged piston back-moving spring 17 will
Charged piston 23 jack-up, when the fuel pressure in charged piston cavity of resorption 20 and check valve back-moving spring 18 spring force little with joint efforts
During fuel pressure in oil-in 16, check valve 19 is connected to left movement, charged piston cavity of resorption 20 with oil-in 16, and fuel oil enters
Enter in hybrid fuel jet device.
During electromagnetic fuel valve coil 32 energising, armature 33 drives the first control valve 38 to overcome the first control valve back-moving spring 37
Spring force move upwards, oil return opening 41 is connected with drain path 34, fuel oil from control chamber 42 pass through oil return opening 41, drain path
34 quickly leak in the first drain tap 35, and control chamber 42 fuel pressure reduces rapidly, when reduced pressure is to certain value, contain oil
Act on the fuel oil on the conical surface of the first needle-valve 61 in groove 62, overcome the spring force of the first needle-valve back-moving spring 56 by the first needle-valve
61 jack-up, fuel oil starts to spray.During electromagnetic fuel valve coil 32 power-off, the first control valve back-moving spring 37 is by the first control valve 38
Lower sealing surface be pressed in the lower sealing surface of the first control valve seat 40, oil return opening 41 is no longer connected with drain path 34, now
Control chamber 42 is identical with the fuel pressure in oil holding slot 62, and the first needle-valve 61 presses in the presence of the first needle-valve back-moving spring 56
Needle-valve base 60, fuel oil does not spray.
During piezoelectric element 53 energising, piezoelectric element 53 extends, and the second control valve 50 overcomes the second control valve back-moving spring 47
Spring force and control valve oil pocket 46 in the hydraulic coupling of fuel oil move downward, the lower sealing surface of the second control valve 50 is pressed on second
In the lower sealing surface of control valve return spring holder 44, control valve oil pocket 46 is no longer connected with the second drain tap 45, control valve oil pocket
46 are connected with the second oil-in 49, and fuel oil passes through the second oil-in 49, control valve oil pocket 46, central oil passage 69 from oil-feed oil duct 9
Enter in needle chamber 68, fuel oil acts on the second needle-valve 64 end face, overcome the spring force of the second needle-valve back-moving spring 7 by second
Needle-valve 64 jack-up, combustion gas starts to spray.During piezoelectric element 53 power-off, the second control valve back-moving spring 47 is by the second control valve 50
Upper sealing surface is pressed on the upper sealing surface of the second control valve seat 48, and control valve oil pocket 46 is no longer connected with the second oil-in 49,
Control valve oil pocket 46 is connected with the second drain tap 45, and the fuel oil in needle chamber 68 passes through central oil passage 69, control valve oil pocket 46 is let out
Enter in the second drain tap 45, reduced pressure in needle chamber 68, when reduced pressure is to certain value, the second control valve back-moving spring 47
Second needle-valve 64 is pressed to needle-valve base 60, combustion gas is not sprayed.
Combination type supercharging electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet device has four kinds of mode of operations: first
Planting is that electromagnetic fuel valve coil 32 is energized, and this mode of operation is non pressurized fuel injection mode；Second is first boost electromagnetic valve
Coil 11 is initially powered up, then electromagnetic fuel valve coil 32 is initially powered up, and this mode of operation is supercharging fuel jet mode；The third
It is that electromagnetic fuel valve coil 32 is initially powered up piezoelectric element 53 again and is initially powered up, this mode of operation is that non pressurized oil and gas are double
Fuel injection, lights the combustion gas of gas nozzle injection after the non pressurized fuel oil compression ignition of fuel nozzle injection；4th kind is supercharging electricity
Magnet valve coil 11 and electromagnetic fuel valve coil 32 are first initially powered up piezoelectric element 53 again and are initially powered up, and this mode of operation is also supercharging
Oil and gas dual fuel injection jet mode, lights the combustion of gas nozzle injection after the supercharging fuel compression ignition of fuel nozzle injection
Gas.
During dual fuel engine work, enter the fuel oil of band 65, so that the combustion gas being accumulated in pressure tank 63 will not be led to
Cross the clearance leakage between the second needle-valve 64 and needle-valve base 60, thus the combustion gas static state avoiding hybrid fuel jet device is let out
Leakage；During the second needle-valve 64 motion, combustion gas in pressure tank 63 is leaked upwards by pintle nozzle match-ing parts, in band 65
Will not leak at the second needle-valve back-moving spring 7 under fuel oil effect, the combustion gas directly avoiding hybrid fuel jet device is dynamic
Leakage.
As shown in the above description, combination type supercharging electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet device is main
Including fuel pressurization part, electromagnetism-piezoelectricity control section and nozzle segment, fuel pressurization part passes through supercharging with boost electromagnetic valve
Piston controls supercharging, fuel pressurization pressure and the fuel pressurization efficiency high of fuel oil, can quickly realize fuel pressurization injection and fire
The switching of oil no boosting jet, meets the difference requirement to fuel-injection pressure for the dual fuel engine different capacity；Electromagnetism-piezoelectricity
Control section fuel solenoid valve controls fuel nozzle to realize fuel oil injection, controls gas nozzle to realize gas injection with piezoelectric element
Penetrate, fuel injection motility is high, it is possible to achieve the switching of fuel oil injection and dual fuel injection；Meanwhile, gas nozzle utilizes fuel oil
Sealing combustion gas, can preferably solve the problems, such as that combustion gas is leaked by pintle nozzle match-ing parts, can effectively improve the dynamic property of electromotor
And fuel economy.
This utility model combination type is pressurized electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet device, including fuel oil
Compression portion, electromagnetism-piezoelectricity control section, nozzle segment, inlet channel, oil-feed oil duct etc..Fuel pressurization part by oil-in,
Charged piston, electromagnetic fuel valve coil, supercharger control valve, check valve etc. form, and electromagnetism-piezoelectricity control section is by Electromagnetic Control portion
Divide and piezoelectricity control section composition, nozzle segment is by fuel nozzle part, gas nozzle part, needle-valve body fastening nut, needle-valve
Base forms.Described inlet channel is entered in pressure tank by injection apparatus shell；Pressurizer shell is provided with oil-in,
Oil-in is connected with oil-feed oil duct by fuel pressurization part, and oil-feed oil duct separates two-way branch on control device shell, and one
Road branch pass through first oil-in enter Electromagnetic Control partly in, a road branch pass through second oil-in enter piezoelectricity control unit
In point, oil-feed oil duct separates two-way branch in injection apparatus shell, and a road branch passes through the 3rd oil-in and enters in oil holding slot, and one
Road branch passes through the 4th oil-in and enters in band.
Boost electromagnetic valve coil is arranged in pressurizer 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, unidirectional
Valve right-hand member is connected by screw and is 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 little spring seat by check valve back-moving spring right-hand member
On.
The upper sealing cone of supercharger control valve setting and lower sealing cone, supercharger control valve return spring holder and supercharger control valve
Form supercharger control valve oil pocket, pressurised oil oil-feed oil circuit passes through lower sealing cone and the pressurization control of supercharger control valve between base
Valve oil chamber connects, and supercharger control valve oil pocket passes through upper sealing cone and the pressurised oil draining oil communication of supercharger control valve, supercharging
Valve base is controlled to have supercharger control valve drain tap, charged piston, pressurization control valve base are installed in pressurization control valve base lower end
Form charged piston epicoele and charged piston between, charged piston epicoele connects with supercharger control valve oil pocket, pressurizer shell
Charged piston back-moving spring chamber is set and charged piston outer end between, and charged piston back-moving spring is arranged on charged piston reset bullet
Spring intracavity portion, arranges charged piston cavity of resorption between pressurizer shell and charged piston lower end, charged piston cavity of resorption connects oil-feed
Mouth and supercharging fuel outlet, supercharging fuel outlet is connected with oil-feed oil duct.
Electromagnetic Control part includes electromagnetic fuel valve coil and the first control valve.Electromagnetic fuel valve coil is arranged on control dress
Put enclosure, armature is set below electromagnetic fuel valve coil, the first control valve upper end is stuck on armature by locating snap ring, the first control
Valve lower end processed is pressed on the first control valve seat, the first control valve back-moving spring top side pressure on the first control valve return spring holder,
First control valve back-moving spring bottom is stuck in the first control valve, the lower sealing cone of the first control valve setting, controls piston and control
Form control chamber, the first oil-in is connected with control chamber, oil return opening, and oil return opening passes through close under the first control valve between cavity processed
The envelope conical surface is connected with drain path, and drain path is connected with the first drain tap by fuel solenoid valve end.
Piezoelectricity control section includes piezoelectric element and the second control valve.Piezoelectric element is arranged on control device enclosure,
Metallic gasket is set below piezoelectric element, and conversion piston is stuck on metallic gasket, converts piston and the second control valve below
It is pressed on the second control valve back-moving spring, the second control valve is arranged on inside the second control valve seat, the second control valve back-moving spring
Lower end is supported on the second control valve return spring holder, the second control valve setting above sealing cone and lower sealing cone, the second control
Form control valve oil pocket, the second oil-in passes through the upper close of the second control valve between valve return spring holder processed and the second control valve seat
The envelope conical surface connects with control valve oil pocket, and control valve oil pocket is connected with the second drain tap by the lower sealing cone of the second control valve.
Fuel nozzle part includes the first needle-valve and the first needle-valve back-moving spring.First needle-valve back-moving spring is arranged on control
Piston exterior, the first needle-valve back-moving spring is supported on the first needle-valve return spring holder, the first needle-valve return spring holder and first
Needle-valve is connected and is arranged on spacing hole intralaminar part, forms oil holding slot between the first needle-valve and needle-valve base, and oil holding slot enters with the 3rd
Hydraulic fluid port connects.
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 second needle-valve
Back-moving spring is arranged on gag lever post outer end, and the second needle-valve back-moving spring lower end is supported on the second needle-valve, the second needle-valve and injection
Form needle chamber, gag lever post and the second needle-valve arrange central oil passage along axis, and central oil passage connects control valve between crust of the device
Oil pocket and needle chamber, form pressure tank between the second needle-valve and needle-valve base, pressure tank connects with inlet channel, needle-valve base with
Annular sealing strip is set between the second needle-valve, and band is connected with the 4th oil-in.
Claims (3)
1. combination type supercharging electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet device, is characterized in that: include fuel pressurization
Partly, injection apparatus shell, control device shell, electromagnet portion, piezoelectric, needle-valve base, control device shell is arranged on
In injection apparatus shell, oil-feed oil duct is set in control device shell, needle-valve base is arranged on spray by needle-valve body fastening nut
Below injection device shell, needle-valve base includes electromagnetic base and piezoelectricity base；
Described fuel pressurization part includes pressurizer 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 pressurizer
Shell is arranged on above control device shell, setting pressurised oil oil-in, pressurised oil drain tap, oil-in on pressurizer shell,
Boost electromagnetic valve coil is arranged in pressurizer shell, and supercharging armature is located at below boost electromagnetic valve coil, supercharger control valve
Upper end be stuck on supercharging armature by locating snap ring, the lower end of supercharger control valve passes through the supercharger control valve below supercharging armature multiple
Position spring base is pressed on pressurization control valve base, and supercharger control valve arranges sealing cone and lower sealing cone, pressurization control
Form supercharger control valve oil pocket, pressurised oil oil-in passes through supercharger control valve between valve return spring holder and pressurization control valve base
Lower sealing cone connect with supercharger control valve oil pocket, supercharger control valve oil pocket is by the upper sealing cone of supercharger control valve and increasing
Force feed drain tap connection, pressurization control valve base has supercharger control valve drain tap, and charged piston is arranged on supercharger control valve bottom
The lower section of seat, forms charged piston epicoele, charged piston epicoele and pressurization control between pressurization control valve base and charged piston
Valve oil chamber connect, in the middle part of pressurizer shell and charged piston between formed charged piston back-moving spring chamber, charged piston reset
Spring is placed on charged piston and is located at charged piston back-moving spring intracavity portion, between pressurizer shell and charged piston lower end
Setting charged piston cavity of resorption, check valve is arranged in pressurizer shell, and the import of check valve is connected with oil-in, check valve
Outlet charged piston cavity of resorption, below charged piston cavity of resorption setting supercharging fuel outlet；
Described electromagnet portion includes electromagnetic valve coil, armature, the first control valve, the first control valve seat, the first control valve reset bullet
Spring, the first control valve return spring holder, control piston, electromagnetic valve coil and armature are arranged on control device enclosure, armature
For armature chamber at place, the first control valve upper end is stuck on armature by locating snap ring, and the first control valve passes through the first control valve multiple
Position spring base is simultaneously pressed on the first control valve seat, forms control valve and let out between the bottom of the first control valve and the first control valve seat
Oil pocket, forms draining chamber between the first control valve return spring holder and the first control valve seat, the first control valve back-moving spring is enclosed within
In first control valve, the top of the first control valve back-moving spring withstands on the first control valve return spring holder, and the first control valve is multiple
The bottom of position spring is stuck in the first control valve, the lower sealing cone of the first control valve setting, setting control below the first control valve seat
Cavity processed, controls the upper end of piston to be arranged in control cavity and and controls formation control chamber, the first control valve between cavity
Setting drain path and the first drain tap on return spring holder, drain path connection armature chamber and draining chamber, the first drain tap is even
Logical armature chamber, setting oil return opening and control valve drain tap on the first control valve seat, control chamber passes through in control device shell the
One oil-in connection oil-feed oil duct, one end connection control chamber of oil return opening, the other end of oil return opening passes through under the first control valve
Sealing surface realizes the connection or disconnection with draining chamber, and control valve drain tap connects control valve draining chamber, controls the bottom of piston
Connect the first needle-valve return spring holder, the first needle-valve is arranged in electromagnetic base and is located at below the first needle-valve return spring holder,
Control and be cased with the first needle-valve back-moving spring on piston, between the first needle-valve and electromagnetic base, form oil holding slot, the first needle-valve resets
3rd oil-in is set in spring base, and oil holding slot passes through the 3rd oil-in and connects oil-feed oil duct；
Described piezoelectric includes piezoelectric element, conversion piston, the second control valve, the second control valve seat, the second control valve reset
Spring base, gag lever post, the second needle-valve, the second needle-valve back-moving spring, piezoelectric element is arranged in control device shell, piezoelectric element
Lower section setting metallic gasket, conversion piston upper end is stuck on metallic gasket, arranges the second control valve, the second control below conversion piston
Valve processed is arranged on inside the second control valve seat, the second control valve arranges sealing cone and lower sealing cone, in upper sealed taper
It is cased with the second control valve back-moving spring, the second control valve back-moving spring lower end is supported on the second control between face and lower sealing cone
On valve return spring holder, between the second control valve return spring holder and the second control valve seat, form control valve oil pocket, the second control
The second oil-in being communicated with oil-feed oil duct is had on valve seat, the second control valve return spring holder has the second drain tap, the
Two oil-ins are realized connecting or disconnecting by the upper sealing cone of the second control valve and control valve oil pocket, and control valve oil pocket is by the
The lower sealing cone of two control valves is realized connecting or disconnecting with the second drain tap, and gag lever post is arranged on the second control valve back-moving spring
Below seat, the lower end of gag lever post is placed on inside the second needle-valve, and the second needle-valve back-moving spring is enclosed within outside gag lever post, and the second needle-valve is multiple
The lower end of position spring is supported on the second needle-valve, and the second needle-valve is arranged in the piezoelectricity base of needle-valve base, the second needle-valve and spray
Form needle chamber, gag lever post and the second needle-valve arrange central oil passage along axis, and central oil passage connection controls between injection device shell
Valve oil chamber and needle chamber, setting band and pressure tank between the second needle-valve and piezoelectricity base, in injection apparatus shell setting with
The 4th oil-in that oil-feed oil duct communicates, band is connected with the 4th oil-in, injection apparatus shell arranges inlet channel, holds
Indent connects inlet channel.
2. combination type according to claim 1 is pressurized electromagnetic fuel injection-non pressurized piezoelectricity jet hybrid fuel jet device,
It is characterized in that: during piezoelectric element energising, piezoelectric element extends, and the second control valve overcomes the spring force of the second control valve back-moving spring
Move downward with the hydraulic coupling of fuel oil in control valve oil pocket, the lower sealing surface of the second control valve is pressed in the second control valve back-moving spring
On seat, control valve oil pocket and the second drain tap disconnect, and control valve oil pocket is connected with the second oil-in, and fuel oil passes through from oil-feed oil duct
Second oil-in, control valve oil pocket, central oil passage enter in needle chamber, and fuel oil acts on the second needle-valve, overcomes the second needle-valve
By the second needle-valve jack-up, combustion gas starts to spray the spring force of back-moving spring；During piezoelectric element power-off, the second control valve back-moving spring
The upper sealing surface of the second control valve is pressed on the second control valve seat, control valve oil pocket and the second oil-in disconnect, and control valve oil
Chamber is connected with the second drain tap, and the fuel oil in needle chamber leaks in the second drain tap by central oil passage, control valve oil pocket, needle-valve
Cavity pressure reduces, and the second needle-valve is pressed to needle-valve base by the second control valve back-moving spring, and combustion gas is not sprayed.
3. combination type supercharging electromagnetic fuel injection according to claim 1 and 2-non pressurized piezoelectricity jet hybrid fuel jet dress
Put, it is characterized in that: during electromagnetic valve coil energising, armature drives the first control valve to overcome the spring force of the first control valve back-moving spring
Move upwards, oil return opening is connected with drain path, fuel oil leaks into the first drain tap from control chamber by oil return opening, drain path,
Control chamber fuel pressure reduces, and acts on the fuel oil on the first needle-valve, overcome the bullet of the first needle-valve back-moving spring in oil holding slot
First needle-valve jack-up, fuel oil are sprayed by spring force；During electromagnetic valve coil power-off, the first control valve back-moving spring is by the first control valve pressure
On the first control valve seat, oil return opening is disconnected with drain path, and the first needle-valve presses in the presence of the first needle-valve back-moving spring
Needle-valve base, fuel oil does not spray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338739.8U CN205908402U (en) | 2016-04-21 | 2016-04-21 | Modular oil spout of pressure boost electromagnetism jet -propelled fuel injection apparatus that mixes of non -supercharged piezoelectricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338739.8U CN205908402U (en) | 2016-04-21 | 2016-04-21 | Modular oil spout of pressure boost electromagnetism jet -propelled fuel injection apparatus that mixes of non -supercharged piezoelectricity |
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| Publication Number | Publication Date |
|---|---|
| CN205908402U true CN205908402U (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620338739.8U Withdrawn - After Issue CN205908402U (en) | 2016-04-21 | 2016-04-21 | Modular oil spout of pressure boost electromagnetism jet -propelled fuel injection apparatus that mixes of non -supercharged piezoelectricity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756820A (en) * | 2016-04-21 | 2016-07-13 | 哈尔滨工程大学 | Combined pressurizing electromagnetic fuel oil injection and non-pressurizing piezoelectric fuel gas injection mixed fuel injection device |
-
2016
- 2016-04-21 CN CN201620338739.8U patent/CN205908402U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756820A (en) * | 2016-04-21 | 2016-07-13 | 哈尔滨工程大学 | Combined pressurizing electromagnetic fuel oil injection and non-pressurizing piezoelectric fuel gas injection mixed fuel injection device |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170125 Effective date of abandoning: 20180417 |
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| AV01 | Patent right actively abandoned |