CN206280178U - Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device - Google Patents
Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device Download PDFInfo
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- CN206280178U CN206280178U CN201620338905.4U CN201620338905U CN206280178U CN 206280178 U CN206280178 U CN 206280178U CN 201620338905 U CN201620338905 U CN 201620338905U CN 206280178 U CN206280178 U CN 206280178U
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Abstract
The purpose of this utility model is to provide combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device, including control section, nozzle segment, inlet channel, oil-feed oil duct.The utility model realizes that fuel oil sprays using solenoid valve control fuel nozzle, and fuel gas injection is realized using piezoelectric element control gas nozzle, can realize pure fuel oil service pattern and double fuel mode of operation；Fuel nozzle uses the motion of solenoid valve control needle-valve, and fuel injection amount and fuel oil injection timing are controllable；Gas nozzle controls the motion of needle-valve using piezoelectric element, and needle lift is adjustable, and fuel gas injection amount and fuel gas injection rate control accuracy are high；Fuel oil at the needle chamber and pintle nozzle match-ing parts of gas nozzle is 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 from being leaked by pintle nozzle match-ing parts, improves fuel gas injection pressure and injection rate, improves the dynamic property and fuel economy of engine.
Description
Technical field
The utility model relates to a kind of fuel injection device, specifically dual fuel injection device.
Background technology
Development engine replacing fuel is to solve energy shortage and problem of environmental pollution effectively one of means.Gas
Fuel substitutes combustion because rich reserves, the low advantage of cheap and disposal of pollutants turn into the engine with good development prospect
Material.Although the gas engine only with a kind of gaseous fuel discharges cleaning, gases used fuel energy density is low, and fuel disappears
Consumption is big, and use direction is limited；And diesel oil is used as light fluid, when gaseous fuel is used as the dual fuel engine of main fuel
Can flexibly switch between two kinds of fuel, replacement of fuel rate is high, with preferable dynamic property, economy and emission performance.
Using the gas nozzle and fuel nozzle of electromagnetic control type more than existing in-cylinder direct-jet dual fuel engine, exist
Weak point has：Gas nozzle and fuel nozzle are independently mounted on cylinder cap, and size and installation site are limited by cylinder cap；Gas injection
Mouth utilizes pressure gas jack-up needle-valve, but because the compressibility of gas is strong, is unfavorable for realizing the precise control of needle valve movement, combustion gas
Injection is unstable；Additionally, during fuel gas injection, with the motion combustion gas of needle-valve by the gap between needle-valve and valve body to electricity
The leakage aggravation of magnet valve end, causes fuel gas injection pressure and injection rate reduction, has bad shadow to the stability of fuel gas injection
Ring, have impact on engine power performance and fuel economy.
The content of the invention
The purpose of this utility model is to provide that the dynamic property of engine and the group of fuel economy can be effectively improved
Box-like electromagnetic fuel injection-piezoelectricity jet hybrid fuel jet device.
What the purpose of this utility model was realized in：
The utility model combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device, it is characterized in that：Filled including control
Shell, injection apparatus shell, needle-valve base, electromagnet portion, piezoelectric are put, control device shell is arranged on injection apparatus shell
In, oil-feed oil duct is set in control device shell, needle-valve base is arranged under injection apparatus shell by needle-valve body fastening nut
Side, needle-valve base includes electromagnetic base and piezoelectricity base；
The electromagnet portion includes that electromagnetic valve coil, armature, the first control valve, the first control valve seat, the first control valve are answered
Position spring, the first control valve return spring holder, control piston, electromagnetic valve coil and armature are arranged on control device enclosure,
It is armature chamber at where armature, 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, and control is formed 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 is withstood on the first control valve return spring holder, the first control
The bottom of valve back-moving spring is stuck on the first control valve, and the first control valve sets lower sealing cone, and the first control valve seat lower section sets
Control cavity is put, is controlled the upper end of piston to be arranged in control cavity and control chamber, the first control is formed between control cavity
Drain path and the first drain tap, drain path connection armature chamber and draining chamber, the first draining are set on valve return spring holder processed
Mouth connection armature chamber, sets oil return opening and control valve drain tap on the first control valve seat, control chamber passes through in control device shell
The first oil inlet connection oil-feed oil duct, one end connection control chamber of oil return opening, the other end of oil return opening is by the first control valve
Lower sealing surface realize with the connection or disconnection in draining chamber, control the bottom of piston to connect the first needle-valve return spring holder, the
One needle-valve is arranged in electromagnetic base and is located at the first needle-valve return spring holder lower section, and the reset of the first needle-valve is cased with control piston
Spring, forms oil holding slot between the first needle-valve and electromagnetic base, the 3rd oil inlet is set in the first needle-valve return spring holder, contains oil
Groove connects oil-feed oil duct by the 3rd oil inlet；
The 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 are arranged in control device shell, piezoelectricity
Element lower section sets metallic gasket, and conversion piston upper end is stuck on metallic gasket, and conversion piston lower section sets second and controls valve, the
Two control valves are arranged on inside the second control valve seat, upper sealing cone and lower sealing cone are set on the second control valve, upper close
The second control valve back-moving spring is cased between the envelope conical surface and lower sealing cone, the second control valve back-moving spring lower end is supported on second
On control valve return spring holder, control valve oil chamber, second are formed between the second control valve return spring holder and the second control valve seat
The second oil inlet communicated with oil-feed oil duct is provided with control valve seat, the second draining is provided with the second control valve return spring holder
Mouthful, the second oil inlet is realized connecting or disconnecting by the upper sealing cone of the second control valve with control valve oil chamber, control valve oil chamber
Realize connecting or disconnecting with the second drain tap by the lower sealing cone of the second control valve, gag lever post is arranged on the second control valve and answers
Position spring base lower section, 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
Needle chamber is formed between valve and injection apparatus shell, gag lever post and the second needle-valve set central oil passage along axis, and central oil passage connects
Logical control valve oil chamber and needle chamber, set band and pressure tank, in injection apparatus shell between the second needle-valve and piezoelectricity base
The 4th oil inlet that setting is communicated with oil-feed oil duct, band is connected with the 4th oil inlet, and air inlet is set on injection apparatus shell
Passage, pressure tank connection inlet channel.
The utility model can also include：
1st, when piezoelectric element is powered, piezoelectric element elongation, the second control valve overcomes the spring of the second control valve back-moving spring
The hydraulic coupling of fuel oil is moved downward in power and control valve oil chamber, 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 chamber disconnects with the second drain tap, and control valve oil chamber connects with the second oil inlet, and fuel oil is logical from oil-feed oil duct
Cross the second oil inlet, control valve oil chamber, central oil passage to enter in needle chamber, fuel oil is acted on the second needle-valve, overcomes the second pin
By the second needle-valve jack-up, combustion gas starts injection to the spring force of valve back-moving spring.
2nd, when piezoelectric element is powered off, the upper sealing surface of the second control valve is pressed in the second control by the second control valve back-moving spring
On valve seat, control valve oil chamber disconnects with the second oil inlet, and control valve oil chamber connects with the second drain tap, and the fuel oil in needle chamber leads to
Cross during central oil passage, control valve oil chamber leak into the second drain tap, the reduction of needle-valve cavity pressure, the second control valve back-moving spring is by the
Two needle-valves press to needle-valve base, and combustion gas is not sprayed.
Advantage of the present utility model is：The utility model realizes that fuel oil sprays using solenoid valve control fuel nozzle, profit
Control gas nozzle to realize fuel gas injection with piezoelectric element, fuel injection flexibility is high, be capable of achieving pure fuel oil service pattern and double
Fuel work pattern；Gas nozzle controls the motion of needle-valve using piezoelectric element, and needle lift is adjustable, fuel gas injection amount and combustion gas
Spraying rate control accuracy is high；Fuel nozzle uses the motion of solenoid valve control needle-valve, and fuel injection amount and fuel oil injection timing can
Control；Gas nozzle fuel oil control needle-valve cavity pressure realizes the motion of needle-valve, improves combustion gas top and opens combustion gas caused by needle-valve
Injection wild effect, can preferably meet system jetting stability requirement；At the needle chamber and pintle nozzle match-ing parts of gas nozzle
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 fires
Gas, is conducive to avoiding combustion gas from being leaked by pintle nozzle match-ing parts, improves fuel gas injection pressure and injection rate, improves engine
Dynamic property and fuel economy.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is control section schematic diagram of the present utility model；
Fig. 3 is nozzle segment schematic diagram of the present utility model.
Specific embodiment
Illustrate below in conjunction with the accompanying drawings and the utility model is described in more detail：
With reference to Fig. 1~3, combined electromagnetic oil spout of the present utility model-piezoelectricity jet hybrid fuel jet device is mainly wrapped
Include electromagnetism-piezoelectricity control section 2, nozzle segment 5, control device shell 1, injection apparatus shell 3, inlet channel 6, oil-feed oil duct
9.Electromagnetism-piezoelectricity control section 2 is made up of Electromagnetic Control part 10 and piezoelectricity control section 33, and Electromagnetic Control part 10 is mainly wrapped
Including electromagnetic valve coil 11, the control of armature 12, first valve 17, the first control valve seat 19, first controls valve back-moving spring 16, first to control
Valve return spring holder 15 processed, the first oil inlet 22, control piston 4, control chamber 21, oil return opening 20, drain path 13, the first draining
Mouthfuls 14, control valve drain tap 18, piezoelectricity control section 33 mainly includes piezoelectric element 32, metallic gasket 31, conversion piston 30, the
Two control valves 29, the second control valve seat 27, second control valve back-moving spring 26, second to control valve return spring holder 23, second to enter
Hydraulic fluid port 28, control valve oil chamber 25, the second drain tap 24, electromagnetic valve coil 11 and armature 12 are arranged on inside control device shell 1,
The first control upper end of valve 17 is stuck on armature 12 by locating snap ring, and the first control valve 17 lower end is pressed on the first control valve seat 19, the
The top of one control valve back-moving spring 16 is pressed on the first control valve return spring holder 15, the bottom card of the first control valve back-moving spring 16
On the first control valve 17, the first control valve 17 sets lower sealing cone, the first control valve return spring holder 15 and the first control
Using positioning finger setting between valve seat 19, using positioning finger setting between the first control valve seat 19 and control cavity, piston 4 is controlled
Control chamber 21 is formed between control cavity, oil return opening 20 and control valve drain tap 18, first are set on first control valve seat 19
The drain tap 14 of drain path 13 and first, the first oil inlet 22 and control chamber 21, oil return are set on control valve return spring holder 15
Mouth 20 is connected, and oil return opening 20 is connected by the lower sealing cone of the first control valve 17 with drain path 13, and drain path 13 passes through
Magnetic valve end is connected with the first drain tap 14, and piezoelectric element 32 is arranged on inside control device shell 1, and the lower section of piezoelectric element 32 sets
Metallic gasket 31 is put, conversion piston 30 is stuck on metallic gasket 31, conversion piston 30 and the second control valve 29 below are pressed in
On second control valve back-moving spring 26, the second control valve 29 is arranged on inside the second control valve seat 27, the second control valve reset bullet
The lower end of spring 26 is supported on the second control valve return spring holder 23, and the second control valve 29 sets upper sealing cone and lower sealed taper
Face, forms control valve oil chamber 25, the second control valve seat 27 between the second control valve return spring holder 23 and the second control valve seat 27
On be provided with the second oil inlet 28, be provided with the second drain tap 24 on the second control valve return spring holder 23, the second oil inlet 28 passes through
The upper sealing cone of the second control valve 29 is connected with control valve oil chamber 25, controls valve oil chamber 25 and central oil passage 48, needle chamber 47
Connection, control valve oil chamber 25 is connected by the lower sealing cone of the second control valve 29 with the second drain tap 24.Nozzle segment 5 is by firing
Oil burner nozzle part 34, gas nozzle part 49, needle-valve body fastening nut 46, needle-valve base 39 are constituted, and fuel nozzle part 34 is led
To include the first needle-valve 40, the first needle-valve back-moving spring 35, the first needle-valve return spring holder 36, spacing orifice plate 37, the 3rd oil-feed
Mouth 38, oil holding slot 41, gas nozzle part 49 mainly includes the second needle-valve 43, gag lever post 8, the second needle-valve back-moving spring 7, center
Oil duct 48, needle chamber 47, pressure tank 42, the 4th oil inlet 45, band 44, the first needle-valve 40, the second needle-valve 43 are arranged on pin
Inside valve base 39, the first needle-valve 40, the second needle-valve 43 are fixed on injection apparatus shell 3 by needle-valve body fastening nut 46,
Using positioning finger setting between needle-valve base 39 and injection apparatus shell 3, the first needle-valve back-moving spring 35 is arranged on control piston 4
Outside, the first needle-valve back-moving spring 35 is supported on the first needle-valve return spring holder 36, the first needle-valve return spring holder 36 and
One needle-valve 40 is connected and inside spacing orifice plate 37, and oil holding slot 41, limit are formed between the first needle-valve 40 and needle-valve base 39
Using positioning finger setting between position orifice plate 37 and needle-valve base 39, the inside of injection apparatus shell 3 sets gag lever post 8, under gag lever post 8
End is enclosed within inside the second needle-valve 43, and the second needle-valve back-moving spring 7 is arranged on the outer end of gag lever post 8, the lower end of the second needle-valve back-moving spring 7
It is supported on the second needle-valve 43, the needle-valve 43 of gag lever post 8 and second sets central oil passage 48, the connection control of central oil passage 48 along axis
Valve oil chamber 25 and needle chamber 47, form needle chamber 47, the second needle-valve 43 and needle-valve between the second needle-valve 43 and injection apparatus shell 3
Between base 39 formed pressure tank 42, between the needle-valve 43 of needle-valve base 39 and second set annular sealing strip 44, band 44 with
4th oil inlet 45 is connected.Oil-feed oil duct 9 along control device shell 1 radially into hybrid fuel jet device in, and along control
Crust of the device 1 axially downwardly enters in injection apparatus shell 3, and oil-feed oil duct 9 separates two-way branch on control device shell 1,
Branch is entered in piezoelectricity control section 33 by the second oil inlet 28 all the way, and branch enters control by the first oil inlet 22 all the way
In chamber 21, oil-feed oil duct 9 separates two-way branch in injection apparatus shell 3, and branch enters Sheng oil by the 3rd oil inlet 38 all the way
In groove 41, branch is entered in band 44 by the 4th oil inlet 45 all the way；Inlet channel 6 is entered by injection apparatus shell 3
In pressure tank 42.
Combined electromagnetic oil spout of the present utility model-piezoelectricity jet hybrid fuel jet device mainly includes electromagnetism-piezoelectricity
Control section 2, nozzle segment 5, control device shell 1, injection apparatus shell 3, inlet channel 6, oil-feed oil duct 9, electromagnetism-piezoelectricity
Control section 2 is made up of Electromagnetic Control part 10 and piezoelectricity control section 33, and nozzle segment 5 is by fuel nozzle part 34, combustion gas
Nozzle segment 49, needle-valve body fastening nut 46, needle-valve base 39 are constituted.First control valve 17 sets lower sealing cone, control control
Fuel oil draining in chamber processed 21, the second control valve 29 sets upper sealing cone and lower sealing cone, realizes the internal combustion of control valve oil chamber 25
Switching between oily inlet and outlet of fuel channel, drain path 13 is connected by magnetic valve end with the first drain tap 14, and magnetic valve end is full of combustion
Oil, can reduce the shock and vibration of magnetic valve armature up and down motion, so that the stability of dual-coil electromagnetic valve work is improved, and fuel oil
Magnetic valve end is flowed through during draining, dual-coil electromagnetic valve heat is taken away, plays a part of to cool down magnetic valve, control valve drain tap 18 vent from
The gap of the first control control valve seat 19 of valve 17 and first flows to the fuel oil of the bottom of the first control valve 17, metallic gasket 31 play every
From effect, it is to avoid piezoelectric element 32 touch piezoelectricity control section 33 upwards leakage fuel oil, the first needle-valve back-moving spring 35
First needle-valve 40 is pressed into needle-valve base 39, the second needle-valve 43 is pressed to needle-valve base 39, needle-valve bottom by the second needle-valve back-moving spring 7
Annular sealing strip 44 is set between the needle-valve 43 of seat 39 and second, is connected with oil-feed oil duct 9 by the 4th oil inlet 45, sealing passes through
The combustion gas of pintle nozzle match-ing parts leakage, pressure tank 42 plays a part of stabilization air pressure, so as to reduce shadow of the air pressure fluctuation to fuel gas injection
Ring.
When dual fuel engine works, combustion gas enters in pressure tank 42 from inlet channel 6, and fuel oil enters from oil-feed oil duct 9
Hybrid fuel jet device, on the tunnels of 1 Fen Wei of control device shell tri-, leads up to the second oil inlet 28 and enters piezoelectricity control section
In 33, lead up to the first oil inlet 22 and enter in control chamber 21 and oil return opening 20, all the way into injection apparatus shell 3, and
It is divided into two-way on injection apparatus shell 3, leads up to the 3rd oil inlet 38 and enter in oil holding slot 41, leads up to the 4th oil inlet
45 enter in band 44.
When electromagnetic valve coil 11 is powered, armature 12 drives first to control valve 17 to overcome the bullet of the first control valve back-moving spring 16
Spring force is moved upwards, and oil return opening 20 is connected with drain path 13, and fuel oil is fast by oil return opening 20, drain path 13 from control chamber 21
Speed is leaked into the first drain tap 14, and the fuel pressure of control chamber 21 is reduced rapidly, when pressure is reduced to certain value, oil holding slot 41
In act on fuel oil on the conical surface of the first needle-valve 40, overcome the spring force of the first needle-valve back-moving spring 35 to push up the first needle-valve 40
Rise, fuel oil starts injection.When electromagnetic valve coil 11 is powered off, the lower sealing that the first control valve back-moving spring 16 controls valve 17 by first
Face is pressed in the lower sealing surface of the first control valve seat 19, and oil return opening 20 is no longer connected with drain path 13, now control chamber 21
Identical with the fuel pressure in oil holding slot 41, the first needle-valve 40 presses to needle-valve base in the presence of the first needle-valve back-moving spring 35
39, fuel oil does not spray.
When piezoelectric element 32 is powered, piezoelectric element 32 extends, and the second control valve 29 overcomes the second control valve back-moving spring 26
Spring force and control valve oil chamber 25 in the hydraulic coupling of fuel oil move downward, the lower sealing surface of the second control valve 29 is pressed on second
In the lower sealing surface of control valve return spring holder 23, control valve oil chamber 25 no longer connects with the second drain tap 24, control valve oil chamber
25 connect with the second oil inlet 28, and fuel oil is from oil-feed oil duct 9 by the second oil inlet 28, control valve oil chamber 25, central oil passage 48
Into in needle chamber 47, fuel oil is acted on the end face of the second needle-valve 43, overcomes the spring force of the second needle-valve back-moving spring 7 by second
The jack-up of needle-valve 43, combustion gas starts injection.When piezoelectric element 32 is powered off, the second control valve back-moving spring 26 controls valve 29 by second
Upper sealing surface be pressed on the upper sealing surface of the second control valve seat 27, control valve oil chamber 25 no longer connects with the second oil inlet 28
Logical, control valve oil chamber 25 connects with the second drain tap 24, and the fuel oil in needle chamber 47 is by central oil passage 48, control valve oil chamber 25
Leak into the second drain tap 24, pressure is reduced in needle chamber 47, when pressure is reduced to certain value, the second control valve back-moving spring
Second needle-valve 43 is pressed to needle-valve base 39 by 26, and combustion gas is not sprayed.
Combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device has two kinds of mode of operations：The first is the first pin
Valve 40 works, and the mode of operation is pure fuel injection mode；It is for second that first needle-valve 40 the second needle-valve 43 again of starting working is opened
Beginning work, the mode of operation is dual injection mode, and gas nozzle injection is lighted after the fuel oil compression ignition of fuel nozzle injection
Combustion gas.
Piezoelectric element 32 is high due to piezo-electric effect deformation, deformation length reliability, and fuel gas injection rate control accuracy is high；Pass through
Change conduction time length, can be with the deformation length of flexible modulation piezoelectric element 32, the lift of the control valve 29 of change second, and by
In the second control control fuel oil turnover needle chamber 47 of valve 29, therefore, the maximum lift of the second needle-valve 43 is long also with conduction time
The change of degree is adjustable, so as to realize the control of fuel gas injection amount.
When dual fuel engine works, into the fuel oil of band 44, the combustion gas being accumulated in pressure tank 42 is set not lead to
The clearance leakage crossed between the second needle-valve 43 and needle-valve base 39, so as to the combustion gas static state for avoiding hybrid fuel jet device is let out
Leakage；During the second needle-valve 43 is moved, combustion gas is leaked upwards by pintle nozzle match-ing parts in pressure tank 42, in band 44
Will not be leaked at the second needle-valve back-moving spring 7 under fuel oil effect, directly avoid the combustion gas dynamic of hybrid fuel jet device
Leakage.
As shown in the above description, combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device utilizes solenoid valve control
Fuel nozzle realizes that fuel oil sprays, and fuel gas injection is realized using piezoelectric element control gas nozzle, and fuel injection flexibility is high, can
To realize pure fuel oil service pattern and double fuel mode of operation, meanwhile, gas nozzle utilizes fuel sealing combustion gas, can be preferably
Solve the problems, such as that combustion gas is leaked by pintle nozzle match-ing parts, the dynamic property and fuel economy of engine can be effectively improved.
The utility model combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device, gas nozzle and fuel oil are sprayed
Mouth is combined in an injection apparatus, including electromagnetism-piezoelectricity control section, nozzle segment, inlet channel, oil-feed oil duct etc..Electricity
Magnetic-piezoelectricity control section is made up of Electromagnetic Control part and piezoelectricity control section, and nozzle segment is by fuel nozzle part, gas injection
Mouth point, needle-valve body fastening nut, needle-valve base composition.Described oil-feed oil duct fires along control device shell radially into mixing
In material injection apparatus, and axially it is downwardly into injection apparatus shell along control device shell, oil-feed oil duct is outside control device
Two-way branch is separated on shell, branch is entered in Electromagnetic Control part by the first oil inlet all the way, and branch enters by second all the way
Hydraulic fluid port enters in piezoelectricity control section, and oil-feed oil duct separates two-way branch in injection apparatus shell, and branch enters by the 3rd all the way
Hydraulic fluid port enters in oil holding slot, and branch is entered in band by the 4th oil inlet all the way；Inlet channel passes through injection apparatus shell
Into in pressure tank.
Electromagnetic Control part includes electromagnetic valve coil and the first control valve.Electromagnetic valve coil is arranged in control device shell
Portion, electromagnetic valve coil lower section sets armature, and the first control valve upper end is stuck on armature by locating snap ring, and the first control valve lower end is pressed in
On first control valve seat, the first control valve back-moving spring top side pressure on the first control valve return spring holder, answer by the first control valve
Position spring bottom end is stuck on the first control valve, and the first control valve sets lower sealing cone, shape between control piston and control cavity
Into control chamber, the first oil inlet is connected with control chamber, oil return opening, lower sealing cone and draining that oil return opening passes through the first control valve
Channel connection, drain path is connected by magnetic valve end with the first drain tap.
Piezoelectricity control section includes piezoelectric element and the second control valve.Piezoelectric element is arranged on control device enclosure,
Piezoelectric element lower section sets metallic gasket, 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, and the second control valve sets upper sealing cone and lower sealing cone, the second control
Control valve oil chamber is formed between valve return spring holder processed and the second control valve seat, the second oil inlet is provided with the second control valve seat,
The second drain tap, upper sealing cone and control of second oil inlet by the second control valve are provided with second control valve return spring holder
Valve oil chamber connection processed, control valve oil chamber is connected by the lower sealing cone of the second control valve with the second drain tap.
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 oil holding slot is formed between spacing hole intralamellar part, the first needle-valve and needle-valve base, and oil holding slot enters with the 3rd
Hydraulic fluid port is connected.
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
Needle chamber is formed between crust of the device, gag lever post and the second needle-valve set central oil passage, central oil passage connection control valve along axis
Oil pocket and needle chamber, form pressure tank between the second needle-valve and needle-valve base, pressure tank is connected with inlet channel, needle-valve base and
Annular sealing strip is set between the second needle-valve, and band is connected with the 4th oil inlet.
Claims (3)
1. combined electromagnetic oil spout-piezoelectricity jet hybrid fuel jet device, it is characterized in that：Including control device shell, injection
Crust of the device, needle-valve base, electromagnet portion, piezoelectric, control device shell are arranged in injection apparatus shell, control device
Oil-feed oil duct is set in shell, and needle-valve base is arranged on injection apparatus shell lower section, needle-valve base by needle-valve body fastening nut
Including electromagnetic base and piezoelectricity base；
The 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
It is armature chamber at place, the first control valve upper end is stuck on armature by locating snap ring, and the first control valve is answered through the first control valve
Position spring base is simultaneously pressed on the first control valve seat, and forming control valve between the bottom of the first control valve and the first control valve seat lets out
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
On first control valve, the top of the first control valve back-moving spring is withstood on the first control valve return spring holder, and the first control valve is answered
The bottom of position spring is stuck on the first control valve, and the first control valve sets lower sealing cone, and the first control valve seat lower section sets control
Cavity processed, controls the upper end of piston to be arranged in control cavity and control chamber is formed between control cavity, the first control valve
Drain path and the first drain tap are set on return spring holder, and drain path connection armature chamber and draining chamber, the first drain tap connect
Logical armature chamber, sets oil return opening and control valve drain tap on the first control valve seat, control chamber is by the in control device shell
One oil inlet connects oil-feed oil duct, and 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, controls the bottom of piston to connect the first needle-valve return spring holder, the first pin
Valve is arranged in electromagnetic base and is located at the first needle-valve return spring holder lower section, and the first needle-valve reset bullet is cased with control piston
Spring, forms oil holding slot between the first needle-valve and electromagnetic base, the 3rd oil inlet, oil holding slot are set in the first needle-valve return spring holder
Oil-feed oil duct is connected by the 3rd oil inlet；
The piezoelectric includes that 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 are arranged in control device shell, piezoelectric element
Lower section sets metallic gasket, and conversion piston upper end is stuck on metallic gasket, and conversion piston lower section sets second and controls valve, the second control
Valve processed is arranged on inside the second control valve seat, upper sealing cone and lower sealing cone is set on the second control valve, in upper sealed taper
The second control valve back-moving spring is cased between face and lower sealing cone, the second control valve back-moving spring lower end is supported on the second control
On valve return spring holder, control valve oil chamber, the second control are formed between the second control valve return spring holder and the second control valve seat
The second oil inlet communicated with oil-feed oil duct is provided with valve seat, the second drain tap is provided with the second control valve return spring holder, the
Two oil inlets are realized connect or disconnecting by the upper sealing cone of the second control valve with control valve oil chamber, control valve oil chamber to pass through 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
Seat lower section, 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 answered
Position spring lower end be supported on the second needle-valve, the second needle-valve be arranged on needle-valve base piezoelectricity base in, the second needle-valve with spray
Needle chamber is formed between injection device shell, gag lever post and the second needle-valve set central oil passage, central oil passage connection control along axis
Valve oil chamber and needle chamber, between the second needle-valve and piezoelectricity base set band and pressure tank, in injection apparatus shell set with
The 4th oil inlet that oil-feed oil duct is communicated, band is connected with the 4th oil inlet, and inlet channel is set on injection apparatus shell, holds
Indent connects inlet channel.
2. combined electromagnetic oil spout according to claim 1-piezoelectricity jet hybrid fuel jet device, it is characterized in that：Pressure
When electric device is powered, piezoelectric element elongation, the second control valve overcomes the spring force and control valve oil of the second control valve back-moving spring
The hydraulic coupling of fuel oil is moved downward in chamber, and the lower sealing surface of the second control valve is pressed on the second control valve return spring holder, is controlled
Valve oil chamber disconnects with the second drain tap, and control valve oil chamber connects with the second oil inlet, and fuel oil passes through the second oil-feed from oil-feed oil duct
Mouth, control valve oil chamber, central oil passage enter in needle chamber, and fuel oil is acted on the second needle-valve, overcomes the second needle-valve back-moving spring
Spring force by the second needle-valve jack-up, combustion gas start injection.
3. combined electromagnetic oil spout according to claim 1 and 2-piezoelectricity jet hybrid fuel jet device, it is characterized in that：
When piezoelectric element is powered off, be pressed in the upper sealing surface of the second control valve on the second control valve seat by the second control valve back-moving spring, controls
Valve oil chamber processed disconnects with the second oil inlet, and control valve oil chamber connects with the second drain tap, and the fuel oil in needle chamber passes through center oil
Road, control valve oil chamber are leaked into the second drain tap, the reduction of needle-valve cavity pressure, and second controls valve back-moving spring by the second needle valve pressed
To needle-valve base, combustion gas is not sprayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338905.4U CN206280178U (en) | 2016-04-21 | 2016-04-21 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338905.4U CN206280178U (en) | 2016-04-21 | 2016-04-21 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
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| Publication Number | Publication Date |
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| CN206280178U true CN206280178U (en) | 2017-06-27 |
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| CN201620338905.4U Withdrawn - After Issue CN206280178U (en) | 2016-04-21 | 2016-04-21 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756827A (en) * | 2016-04-21 | 2016-07-13 | 哈尔滨工程大学 | Combined electromagnetic fuel oil injection and piezoelectric fuel gas injection mixed fuel injection device |
-
2016
- 2016-04-21 CN CN201620338905.4U patent/CN206280178U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756827A (en) * | 2016-04-21 | 2016-07-13 | 哈尔滨工程大学 | Combined electromagnetic fuel oil injection and piezoelectric fuel gas injection mixed fuel injection device |
| CN105756827B (en) * | 2016-04-21 | 2018-01-19 | 哈尔滨工程大学 | Combined electromagnetic oil spout piezoelectricity jet hybrid fuel jet device |
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Granted publication date: 20170627 Effective date of abandoning: 20180119 |