CN105143659B - Fuelinjection nozzle and its manufacture method - Google Patents
Fuelinjection nozzle and its manufacture method Download PDFInfo
- Publication number
- CN105143659B CN105143659B CN201480022851.4A CN201480022851A CN105143659B CN 105143659 B CN105143659 B CN 105143659B CN 201480022851 A CN201480022851 A CN 201480022851A CN 105143659 B CN105143659 B CN 105143659B
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- China
- Prior art keywords
- fuel
- fuel orifice
- mentioned
- recess
- spray
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/146—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing a liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
- F02M61/184—Discharge orifices having non circular sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8069—Fuel injection apparatus manufacture, repair or assembly involving removal of material from the fuel apparatus, e.g. by punching, hydro-erosion or mechanical operation
Abstract
The purpose of the present invention is configuration and the design freedom at angle of inclination that adventitious deposit and raising fuel orifice are difficult in the Fuelinjection nozzle with multiple fuel orifices and the combination of recess.In order to reach above-mentioned purpose, the present invention by punch process formation recess (301o), and the liquid jet such as laser machines by water jet on the bottom surface (301ob) of the recess (301o) and laser machines to form fuel orifice (301n) on the outer surface of spray-hole formation part (301).And then preferably, before laser machining by liquid jet and to form fuel orifice (301n), implement to form the grinding that valve seat constitutes face (301g).
Description
Technical field
The present invention relates to the Fuelinjection nozzle of the spray fuel for internal combustion engine and its manufacture method.
Background technology
As the background technology of the art, there are Japanese Unexamined Patent Publication 2011-140036 publications (patent document 1).At this
In publication (summary), the device being processed as the fuel orifice to Fuelinjection nozzle describes a kind of laser processing device
Put, it possesses：To the nozzle of hole spray fuel；The laser head of laser beam is irradiated in the liquid internal sprayed to hole；Holding is added
The holding tool of work thing；And configuration is interdicted at non-processing position and interdicts tool by the laser beam of the laser beam in hole, in laser beam
Blocking tool is provided with the discharge path of the liquid discharge by hole is reached.And then in the publication (0027 section), it is used as fuel orifice
Processing method describes a kind of processing method, and laser beam in gas is irradiated and micropore is carried out slightly to add by it to machined object
Work, and finished to having carried out rough machined micropore using water jet laser.Water jet laser can be by from spray
Water column (water jet) inner utilization laser head irradiation formed by mouth injection water under high pressure collects the laser beam of beam diameter for needed for and obtained
To (0030-0032 sections).Using the processing unit (plant) or processing method, surface roughness can be made smaller to add fuel orifice
Work is straight shape and reduces heat affecting (0049 section).In addition, laser beam blocking tool is used to prevent the water jet laser by hole
Laser beam the non-processing position of machined object is processed (0050 section).
Also, a kind of Fuelinjection nozzle has been recorded in Japanese Unexamined Patent Publication 2010-038127 publications (patent document 2), its
The recess A and recess B that fuel orifice is formed with by punch process and formed in the exit opening portion of fuel orifice
(paragraph 0031-0042).Fuel orifice, recess A and recess B are extruded by punch process is processed as blind hole shape.This
When, the material being extruded by punch process can form protrusion on the face of side opposite with the compressive plane of drift.When this is grand
The portion of rising constitutes the machining or electro-discharge machining in face by valve seat and after being removed, then fuel orifice can be from the compressive plane of drift
Side insertion to opposite side face.In the Fuelinjection nozzle, machining or the electric discharge in face are constituted in the valve seat for removing protrusion
Quenched after processing, and then implement machining to carry out the finishing that valve seat constitutes face.Finally, it will be produced in finishing
Overlap using water jet or fluid grinding remove.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2011-140036 publications
Patent document 2：Japanese Unexamined Patent Publication 2010-038127 publications
The content of the invention
Invent problem to be solved
In Fuelinjection nozzle, the especially formation fuel orifice of the spray-hole formation part of fuel orifice is formed
The rigidity at position is relatively low.When forming multiple fuel orifices, a fuel orifice is often formed, can all cause spray-hole to be formed
The rigidity reduction of part.Between multiple fuel orifices, fuel orifice inclines relative to the central axis of Fuelinjection nozzle
, then can not be disposably to whole fuel orifice progress punch process when rake angle is different or when incline direction is different
It is to carry out punch process one by one.Therefore, before the machining of whole fuel orifices, spray-hole formation part needs tool
There is the rigidity needed for punch process.In Fuelinjection nozzle, in order that the length L of fuel orifice is relative to fuel orifice
Diameter D ratio (L/D) is adequate value, is set sometimes in the exit opening portion of fuel orifice from outer surface side towards The fuel stream
To upstream side (inner side) depression recess.The firm of spray-hole formation part can especially be caused in the construction that the recess is set
Property reduction.
When the rigidity needed for spray-hole formation part does not have punch process, such as described in patent document 2, sometimes by elder generation
The stress that the fuel orifice of capable punch process formation is produced when can be because of punch process in the fuel orifice processed later
And deform.Now then it is difficult to the higher machining accuracy for maintaining fuel orifice.
In the past, it is necessary to consider the firm of spray-hole formation part when by punch process formation fuel orifice and recess
Property determines configuration or the angle of inclination of fuel orifice.Therefore, for obtaining the fuel orifice of desired injected fuel spray
Configuration or the design at angle of inclination and remarkable.
But in punch process, by making machined surface be full shear surface, the surface roughness of machined surface can be reduced simultaneously
Reduce the attachment of deposit.The water jet Laser Processing that patent document 1 is recorded, although (swashing with common Laser Processing in gas
Light is processed) machined surface compared to can reduce surface roughness, but not as good as the processing being appropriately machined by punch process
The surface roughness in face.Also, the Fuelinjection nozzle of patent document 1 does not have recess in the exit opening portion of fuel orifice,
For in the construction with multiple fuel orifices and the combination of recess deposit be difficult to adhere to and improve fuel orifice
Configuration and angle of inclination design freedom demand, then be not contemplated.
Therefore, the purpose of the present invention is to make to sink in the Fuelinjection nozzle with multiple fuel orifices and the combination of recess
Product thing is difficult to adhere to and improved the configuration of fuel orifice and the design freedom at angle of inclination.
Method for solving problem
In order to reach above-mentioned purpose, the present invention forms recess in the outer surface of spray-hole formation part by punch process,
And laser machine to form fuel orifice in liquid jets such as the underrun water jet Laser Processings of the recess.And then preferably,
Before laser machining by liquid jet and to form fuel orifice, implement to constitute valve seat the grinding that face is processed.
The recess formed by punch process is exposed to the outer surface of spray-hole formation part, but the surface of the machined surface
Roughness is smaller and deposit is difficult to adhere to.The surface roughness ratio for the fuel orifice to be formed is laser machined by liquid jet
The surface roughness of recess is big, but surface roughness can be made to be less value, and due to being entered all the time by fuel injection
Row cleans and is prevented from deposit attachment.
, will not be in spray-hole forming portion when laser machining the bottom surface formation fuel orifice in recess by liquid jet
Act on compared with big load, it is to avoid produce larger stress on spray-hole formation part, therefore the configuration of fuel orifice and incline on part
The design freedom of rake angle is improved.
The effect of invention
In accordance with the invention it is possible to make deposit be difficult to adhere to and improve the configuration of fuel orifice and the design at angle of inclination
The free degree.
Problem other than the above, structure and effect can be understood by the explanation of implementation below.
Brief description of the drawings
Fig. 1 is the sectional view of the construction for the electro-magneto fuel injector for representing one embodiment of the invention, is represented with
The longitudinal section of cutting plane parallel heart axis 100a.
Fig. 2 is the sectional view of the construction for the electro-magneto fuel injector for representing one embodiment of the invention, is represented with
The longitudinal section of cutting plane parallel heart axis 100a.
Fig. 3 is the stream for representing the processing fuel orifice 301n and recess 301o process on spray-hole formation part 301
Cheng Tu.
Fig. 4 is the figure for representing the blank for processing fuel orifice 301n and recess 301o.
Fig. 5 is the sectional view for the V-V sections for representing Fig. 4.
Fig. 6 is the sectional view for the machining state for representing the manufacturing procedure S2 shown in Fig. 3.
Fig. 7 is the sectional view for the machining state for representing the manufacturing procedure S3 shown in Fig. 3.
Fig. 8 is that the spray-hole for representing the state terminated untill the manufacturing procedure S3 shown in Fig. 3 forms the outward appearance of part 301
Stereogram.
Fig. 9 is the sectional view for the IX-IX sections for representing Fig. 8.
Figure 10 is that the spray-hole formation part 301 of the state for terminating untill the manufacturing procedure S6 shown in Fig. 3 is represented
The sectional view of the section same with Fig. 9.
Figure 11 is the ideograph that the water jet Laser Processing to fuel orifice is illustrated.
Figure 12 is that the spray-hole formation part 301 of the state for terminating untill the manufacturing procedure S8 shown in Fig. 3 is represented
The sectional view of the section same with Fig. 9.
Figure 13 shows fuel orifice 301n first case.
Figure 14 shows fuel orifice 301n second case.
Figure 15 shows the 3rd of fuel orifice 301n.
Embodiment
Embodiments of the invention are illustrated below.
The structure of electro-magneto fuel injector 100 is illustrated using Fig. 1 and Fig. 2.Fig. 1 is to represent a reality of the invention
The sectional view of the construction of the electro-magneto fuel injector of example is applied, is that the vertical profile for representing the cutting plane parallel with central axis 100a is regarded
Figure.Fig. 2 is the sectional view of the construction for the electro-magneto fuel injector for representing one embodiment of the present of invention, is to represent and central shaft
The longitudinal section of cutting plane parallel line 100a.
Electro-magneto fuel injector 100 is made up of following portion：Supply the fuel supplying part 200 of fuel；Top ends are provided with
Allow or interdict the spray nozzle part 300 for the valve portion 300a that fuel circulates；And driving valve portion 300a electromagnetic drive part 400.At this
In embodiment, the example of the electro-magneto fuel injector of gasoline-fueled internal combustion engine is illustrated.The present invention also can
Enough Fuelinjection nozzles for being applied to for example be driven by piezoelectric element or for the form of diesel engine electro-magneto fuel injector with
Outer Fuelinjection nozzle.
In the electro-magneto fuel injector 100 of the present embodiment, drawing upper end side constitute fuel supplying part 200 and
Lower end side constitutes spray nozzle part 300, and being constituted between fuel supplying part 200 and spray nozzle part 300 has electromagnetic drive part 400.That is, edge
Central axis 100a directions to be configured with successively：Fuel supplying part 200, electromagnetic drive part 400 and spray nozzle part 300.
Fuel supplying part 200 can link relative to the end of the opposite side of spray nozzle part 300 with fuel distribution tube (not shown).Spray
Mouth 300 is formed relative to the combustion chamber that air intake duct (not shown) or internal combustion engine are inserted in the end of the opposite side of fuel supplying part 200
The mounting hole formed on part (gray iron etc.).Electro-magneto fuel injector 100 is matched somebody with somebody by fuel supplying part 200 from fuel
Pipe receive fuel supply, and from the top ends of spray nozzle part 300 into air intake duct or combustion chamber spray fuel.In the spray of electromagnetic type fuel
Penetrate inside valve 100, the top ends from the above-mentioned end of fuel supplying part 200 to spray nozzle part 300, which are constituted, fuel passage 101
(101a~101h), and allow the fuel to the central axis 100a directions flowing approximately along electro-magneto fuel injector 100.
In the following description, for the central axis 100a along electro-magneto fuel injector 100 direction both ends, will
End or end side relative to the fuel supplying part 200 that spray nozzle part 300 is located at opposite side are referred to as base end part or base end side, and incite somebody to action
End or end side relative to the spray nozzle part 300 that fuel supplying part 200 is located at opposite side are referred to as top ends or tip side.And
And, to being constituted, each portion of electro-magneto fuel injector is additional to be illustrated "up" or "down" on the basis of Fig. 1 above-below direction.This
It is that, in order to be readily appreciated that explanation, and electro-magneto fuel injector is not limited to the above-below direction relative to the actual load form of internal combustion engine.
The structure to fuel supplying part 200, electromagnetic drive part 400 and spray nozzle part 300 is described in detail below.
Fuel supplying part 200 is made up of cartridge 201, and the cartridge 201 is consolidated from composition electromagnetic drive part 400 described later
The one end of fixed core 401 is extended.I.e. in the present embodiment, fixed iron core 401 and cartridge 201 are integrally shaped to one
Individual part.
The fuel supply mouth 201a connected with fuel passage 101a is offered in the upper end of cartridge 201.Relative to combustion
Material supply mouth 201a wide diameter portion 201b that are constituting stage portion provided with expanding on the outer peripheral face of lower section.Wide diameter portion 201b with
O-ring 202 is installed between fuel supply mouth 201a.And then, packing ring 203 is provided between O-ring 202 and wide diameter portion 201b.
O-ring 202 is used as the seal performance for preventing that fuel from leaking when fuel supply mouth 201a is installed on fuel distribution tube
Function.Also, packing ring 203 is used to aid in O-ring 202.Packing ring 203 is sometimes constituted with multiple endless member laminations.In combustion
The cleaner 204 filtered to the foreign matter being mixed into fuel is equipped on the inside of material supply mouth 201a.
Spray nozzle part 300 possesses valve portion 300a in its top ends (bottom), and possesses composition in valve portion 300a upstream side
Fuel passage 101f hollow cylindrical body (nozzle body) 300b.In addition, the top ends outer peripheral face in nozzle body 300b is provided with point
End seal 103.
Valve portion 300a possesses：Spray-hole formation part 301, guide member 302 and the one end for being arranged on plunger rod 102
The valve element 303 in portion's (tip side).
Concave shape portion 301b is formed with downward from upper surface 301a in the inner side of spray-hole formation part 301.Recessed
From upper surface 301a towards concave shape portion 301b depth side on shape portion 301b, it is formed with and parallel with central axis 100a is in
The inner peripheral surface 301c of drum.It is formed with stage portion 301d in inner peripheral surface 301c lower end, and from stage portion 301d inner circumferential
Inner circumferential wall 301e is formed with towards concave shape portion 301b depth side.Uploaded in stage portion 301d and put guide member described later
302.Inner circumferential wall 301e is formed towards depth side undergauge and forms fuel chambers 301f.In interior peripheral wall surfaces 301e lower end shape
Face 301g is constituted into the valve seat for having cone shape, and is forming the apex that valve seat constitutes face 301g cone shape, provided with keeping away
Exempt from the relief portion 301h interfered with valve element 303.
Constituted in the valve seat of cone shape on the 301g of face with ring-type provided with the valve seat 301b contacted with valve element 303.Valve seat structure
Contact width into face 301g and valve element 303 it is very narrow and close to linear contact lay.Therefore, face 301g and valve element will be constituted with valve seat
The suitable annulus of 303 contact width is referred to as valve seat 301b, so that distinguish valve seat 301b constitutes face 301g with valve seat.But
It is that valve seat 301b is formed between the top and bottom that valve seat constitutes face 301g, valve seat composition face 301g is also referred to as valve sometimes
Seat 301b.
In the outside of spray-hole formation part 301, it is formed with from upper surface 301a with drum downward and center
Outer peripheral face 301i parallel axis 100a.Outer peripheral face 301i lower end is connected with end face (lower surface) 301j.End face 301j's
Central part is formed with curved face part (or the sphere portion) 301k projected from the surface.
According to said structure, spray-hole formation part 301 is formed as bottomed tube and had：By inner peripheral surface 301c and periphery
The cylindrical portion 301l that face 301i is constituted；And by constituting face 301g, relief portion 301h and curved surface comprising inner circumferential wall 301e, valve seat
The bottom 301m that portion (or sphere portion) 301k end face 301j is constituted.
On the bottom 301m of spray-hole formation part 301 fuel orifice is formed with the way of the 301m of insertion bottom
301n and recess 301o.Recess 301o has：Be formed as cylinder from curved face part 301k outer surface towards concave shape portion 301b sides
The inner peripheral surface 301oa of shape；And the bottom surface 301ob being formed flatly.Fuel orifice 301n outlet is recess 301o's
Bottom surface 301ob is open, and its entrance is in rear side (valve seat constitutes face 301g sides) opening of spray-hole formation part 301.Inner circumferential
Face 301oa central axis is consistent with fuel orifice 301n central axis.In bottom surface 301ob and fuel orifice 301n
Heart axis is vertical.Recess 301o each is separately provided on multiple fuel orifice 301n, provided with multiple fuel orifices
301n and recess 301o combination.
Spray-hole formation part 301 can be made by manufacturing procedure described later, be inserted and fixed in nozzle body 300b
Top ends formation recess inner peripheral surface 300ba.Now, by the periphery of the top end face of spray-hole formation part 301 and nozzle body
300b top end face inner circumferential is welded and seals fuel.
Guide member 302 is configured in the inner side of spray-hole formation part 301.It is formed with the central part of guide member 302
Through hole 302a from upper surface insertion to lower surface.Through hole 302a constitutes drawing for tip side (lower end side) of plunger rod 102
Guide face, guides the movement along the plunger rod 102 on central axis 100a direction (open and close valve direction).In guide member 302
Outer peripheral face is formed with fuel passage 101g, and is then formed with fuel passage 101h in the lower surface of guide member 302.
The valve portion 303a in valve closing of valve element 303 is contacted with valve seat 301b and is ordinatedly sealed fuel with valve seat 301b.Valve portion
300a is the main portion of spray fuel, constitutes the spraying forming portion to form injected fuel spray.
Electromagnetic drive part 400 is made up of following portion：Fixed iron core 401, coil 402, periphery yoke 403, movable core
404th, the first spring members (helical spring) 405, spring force regulating member 406, second spring part (spring) 407 and bullet
Spring abutment part 408.
Fixed iron core 401 has：In the lower surface of end (bottom) formation relative to the opposite side of cartridge 201
401a, constitute fuel passage 101c through hole 401b in central part and be extended in cartridge 201 on the end of side
Towards radially projecting the flange part 401c formed.The outer peripheral face 401d of fixed iron core 401 is with forming the expansion on nozzle body 300b
Footpath portion 300ba inner peripheral surface is fitted together to.Coil 402 is wound with the outer circumferential side of fixed iron core 401 and nozzle body wide diameter portion 300ba.
Periphery yoke 403 is set in the way of around the outer circumferential side of coil 402, as the outer cover of electro-magneto fuel injector 100
Part.The upper end side inner peripheral surface 403a of periphery yoke 403 is connected and fixed with the flange part 401c of fixed iron core 401 outer peripheral face.
Also, the lower end side inner peripheral surface 403b of periphery yoke 403 is connected and fixed with nozzle body wide diameter portion 300ba outer peripheral face.
Movable core 404 is configured with the bottom side of fixed iron core 401.The end face 404a of movable core 404 and fixation
The end face 401a of iron core 401 is opposed.Also, the outer peripheral face of movable core 404 and nozzle body wide diameter portion 300ba inner peripheral surface across
Small gap is opposed, and movable core 404 is configured on the inside of nozzle body wide diameter portion 300ba along central axis 100a
Side move up.
The recess from the lateral lower surface 404b sides depressions of upper surface 404a is formed with the central portion of movable core 404
404c.On the direction along central axis 100a insertion is formed with recess 404c bottom surface to lower surface 404b through hole
404d.Plunger rod 102 is provided with the way of inserting through hole 404d.Movable core 404 and plunger rod 102 are configured on edge
Relative displacement on central axis 100a direction.It is provided with around the through hole 404d of movable core 404 by recess 404c
Bottom surface opening and insertion to lower surface 404b through hole formation fuel passage 101d.
Plunger rod 102 by the first spring 405 to valve closing direction (lower direction) exert a force, bottom constitute valve element 303 with
Valve seat 301b is contacted.Therefore, the upper end of the first spring 405 is abutted with the lower surface of spring force regulating member 406, the first spring
405 bottom is abutted with being formed in the wide diameter portion 102a of the upper end of plunger rod 102 upper surface.Movable core 404 is by
Two spring members 407 exert a force to valve opening position (upper direction), under recess 404c bottom surface and the wide diameter portion 102a of plunger rod 102
End contact.Therefore, the upper end of second spring part 407 is abutted with the lower surface 404b of movable core 404, second spring portion
The bottom of part 407 is abutted with the seat surface 408a of spring seat member 408.
The active force of first spring 405 is set as bigger than the active force of second spring 407.Therefore, valve element 303 is able to maintain that
The state contacted with valve seat 301b.On the other hand, movable core 404 limits direction using the wide diameter portion 102a of plunger rod 102
The displacement of valve opening position.In the present embodiment, using said structure by the active force of the first spring 405 via plunger rod wide diameter portion
102a is transmitted to movable core 404, and the work of the active force for the valve opening position that movable core 404 is born, i.e. second spring 407
Firmly and fixed iron core 401 magnetic attracting force, transmitted via movable core 404 to plunger rod 102.
In order to which the active force to the first spring 405 is adjusted, spring force is provided with the hollow part 201c of cartridge 201
Regulating member 406.Also, the lower portion of the first spring 405 is configured in the through hole 401b of fixed iron core 401, and upside
It is partly arranged in the hollow part 201c of cartridge 201.First spring 405 and spring force regulating member 406 configure logical in fuel
In road 101a, 101c, being constituted in the central part of spring force regulating member 406 has fuel passage 101b.
Above-mentioned fixed iron core 401, coil 402 and periphery yoke 403, constitutes and produces magnetic attracting force to movable core 404
Electromagnet.
The insertion of the insertion on the direction along central axis 100a is formed with the central part of above-mentioned spring seat member 408
Hole 408b.Through hole 408b constitutes the guide surface of the upper end side of plunger rod 102, guides the direction (opening and closing along central axis 100a
Valve direction) on plunger rod 102 movement.Fuel passage 101e is formed with spring seat member 408.
Coil 402 is to be wound in the periphery that the state of bobbin is assemblied in fixed iron core 401 and nozzle body wide diameter portion 300ba
Side, is molded with resin material around it.Connector 105 is formed with using the resin material used in the molding, should
Connector 105 has the terminal 104 drawn from coil 402.
Next the action to electro-magneto fuel injector 100 is illustrated.
In the state of coil 402 is not powered on, the first spring members exerted a force to plunger rod 102 to valve closing direction are utilized
Active force, valve element 303 is abutted and valve closing with valve seat 301b.The state is referred to as valve closing inactive state.Now, movable core 404
Exerted a force by second spring part 407 to valve opening position, recess 404c bottom surface is abutted with plunger rod wide diameter portion 102a.Movable core
404 are limited towards the displacement of valve opening position by plunger rod wide diameter portion 102a, and in upper surface 404a and fixed iron core lower surface
Space corresponding with the stroke of valve element 303 is generated between 401a.
When coil 402 is powered, then the electromagnet being made up of fixed iron core 401, coil 402 and periphery yoke 403 is utilized to produce
Magnetisation leads to.The magnetic flux expands in the fixed iron core 401 (containing flange part 401c), periphery yoke 403, nozzle body constituted around coil 402
With annular flow in footpath portion 300ba and movable core 404.Now, can be in movable core upper surface 404a and fixed iron core lower end
Magnetic attracting force is acted between the 401a of face, movable core 404 is attracted to fixed iron core 401.Plunger rod 102 is by movable core 404
Pull-up, the valve portion 303a of valve element 303 leaves from valve seat 301b.Thus, the fuel passage between valve element 303 and valve seat 301b is opened
Put.
When movable core upper surface 404a is abutted with fixed iron core lower surface 401a, then at the 404a of movable core upper surface
Stop movement in the state for being adsorbed in fixed iron core lower surface 401a, plunger rod 102 then continues the movement to valve opening position.No
Long, plunger rod 102 can not continue the movement to valve opening position because of the active force of the first spring members 405, and by the first spring
Part 405 is pushed back to valve closing direction.The plunger rod wide diameter portion 102a of the plunger rod 102 pushed back to valve closing direction lower surface with
Movable core recess 404c bottom surface abuts and remained static.The state is referred to as valve opening inactive state.Also, will be from opening
Beginning has been powered from valve closing inactive state untill valve opening inactive state during during referred to as valve opening is acted.
If interdicting the energization to coil 402 under valve opening inactive state, movable core upper surface 404a and fixed iron core
Magnetic attracting force reduces between the 401a of lower surface, if the force ratio of the first spring members magnetic attracting force and second spring portion
Making a concerted effort for the active force of part 407 is big, then plunger rod 102 and movable core 404 start to move to valve closing direction.When valve element 303
When valve portion 303a is abutted with valve seat 301b, then plunger rod 102 stops the movement to valve closing direction.Hereafter movable core 404 also after
Continue the movement to valve closing direction, but can not then continue to valve closing direction because of the active force of second spring part 407 soon
It is mobile.And then movable core 404 is pushed back by second spring part 407 to valve opening position, movable core recess 404c bottom surface with
Plunger rod wide diameter portion 102a lower surface abuts and remains static (valve closing inactive state).Under the valve closing inactive state,
Fuel passage between valve element 303 and valve seat 301b is closed.
In the present embodiment, the electro-magneto fuel injector that plunger rod 102 and movable core 404 are capable of relative displacement is entered
Explanation is gone, but can also be the construction that plunger rod 102 is fixed with movable core 404.Or, plunger rod 102 and movable iron
The heart 404 can also be other constructions for being capable of relative displacement.Also, by fixed iron core 401, coil 402 and the structure of periphery yoke 403
Into electromagnet can also be the structures different from the present embodiment.
Next manufacture method is illustrated using Fig. 3 to Figure 12.Especially to there is feature as manufacture method
Fuel orifice 301n and recess 301o processing method are illustrated.Fig. 3 is to represent to process on spray-hole formation part 301
The flow chart of fuel orifice 301n and recess 301o process.Fig. 4 is to represent to be used to process fuel orifice 301n and recess
The figure of 301o blank (semi-finished product).Fig. 5 is the sectional view for the V-V sections for representing Fig. 4.Fig. 6 is to represent the processing shown in Fig. 3
The sectional view of process S2 machining state.Fig. 7 is the sectional view for the machining state for representing the manufacturing procedure S3 shown in Fig. 3.Fig. 8 is
Represent the outward appearance of the semi-finished product 301 ' (spray-hole formation part 301) of the state terminated untill the manufacturing procedure S3 shown in Fig. 3
Stereogram.Fig. 9 is the sectional view for the IX-IX sections for representing Fig. 8.Figure 10 is to being tied untill the manufacturing procedure S6 shown in Fig. 3
The spray-hole formation part 301 of the state of beam represents the sectional view of the section same with Fig. 9.Figure 11 is to fuel orifice 301n
The ideograph that illustrates of water jet Laser Processing.Figure 12 is the completion to terminating untill the manufacturing procedure S8 shown in Fig. 3
The spray-hole formation part 301 of state represents the sectional view of the section same with Fig. 9.
Prepare the semi-finished product 301 ' of spray-hole formation part 301 in manufacturing procedure S1.Show this partly in Fig. 4 and Fig. 5
Finished product 301 '.In addition, turned upside down in Fig. 4 and Fig. 5 relative to Fig. 1 and Fig. 2, still " on " " under " all the time using Fig. 1 and Fig. 2 as
Benchmark.Fig. 6 described later to Figure 11 explanation is also same.
Inner peripheral surface 301c in the concave shape portion 301b of upper surface 301a and inner side, step are formed with semi-finished product 301 '
Portion 301d, inner circumferential wall 301e and relief portion 301h.Also, outer peripheral face 301i, end face are formed with the outside of semi-finished product 301 '
(lower surface) 301j, curved face part (or sphere portion) 301k.
In semi-finished product 301 ', and the valve seat composition face 301g for constituting valve seat 301b is not completed, to the valve of unfinished state
Seat constitutes face 301g ' and implements roughing.Certainly, fuel orifice 301 and recess 301o are not formed.Although semi-finished product 301 '
Do not complete valve seat and constitute face 301g, but form bottomed tube.This semi-finished product 301 ' can pass through machining or modeling
Property processing made.
In manufacturing procedure S2, as shown in fig. 6, semi-finished product 301 ' are placed in the upper surface of punch die 401, and with collet
402 keep periphery strongly.In addition, the planar portions 301p of curved face part 301k peripheries is extruded with the blade part 403a of drift 403, it is right
Positioning hole 301qa (reference picture 8) carries out punch process.Hole 301qc, which is added, similarly to be differentiated to positioning hole 301qb and type
Work.
Next, in manufacturing procedure S3, as shown in fig. 7, in the state of holding clamps semi-finished product 301 ', using drift
404 blade part 404a extruding curved face part 301k outer surface, by recess 301o punch process is blind hole on curved face part 301k
Shape.Now, by being blind hole shape by recess 301o punch process, face 301g ' sides extrusion material is constituted to the valve seat of unfinished state
Expect and form extrusion portion 301r '.By carrying out punch process to recess 301o, recess 301o inner peripheral surface 301oa is processed into
Full shear surface, can form the small recess 301o of surface roughness.
Recess 301o carries out punch process according to fuel orifice 301n number.Possess 6 fuel in the present embodiment
Spray-hole 301n, therefore 6 punch process are carried out to recess 301o.Fuel orifice 301n number both can be 1 or can
To be multiple beyond 6.
Fuel orifice 301n central axis has the angle of inclination more than 0 ° relative to central axis 100a and tilted.
Recess 301o central axis is consistent with fuel orifice 301n central axis, therefore adds to carry out punching press to recess 301o
Work, drift 404 is crimped on curved face part in the way of its center axis 404b has angle of inclination Ap relative to central axis 100a
301k.And between multiple fuel orifice 301n, the angle of inclination of central axis is different.
Therefore, angle of inclination Ap is adjusted respectively to each fuel orifice 301n.
Stage after manufacturing procedure S3 terminates, semi-finished product 301 ' are in outward appearance as Fig. 8.
Next, in manufacturing procedure S4, constituting face 301g ' to valve seat by machining and carrying out roughing, will add
The extrusion portion 301r ' formed in work process S3 is removed.Stage after manufacturing procedure S4 terminates, Fig. 8 IX-IX sections turn into
Section shape shown in Fig. 9.Now, the valve seat for foring unfinished state constitutes face 301g ".
Next, in manufacturing procedure S5, carrying out quenching processing to semi-finished product 301 ' and improving hardness.By the quenching,
After the completion of valve seat constitute face 301g resistance to abrasion improve.
Next, in manufacturing procedure S6, face 301g " being constituted to valve seat and is finished (machining) and completes valve seat
Composition face 301g.By the finishing, the circularity and surface roughness that valve seat constitutes face g improve and are able to ensure that high oil-tightness.Valve
It is in cone shape that seat, which constitutes face g, and composition has in the way of the top and bottom of conical side surface abuts with the valve portion 303a of valve element 303
Circular valve seat 301b.
Stage after manufacturing procedure S6 terminates, Fig. 8 IX-IX sections turn into the section shape shown in Figure 10.
At the end of manufacturing procedure S6, then fuel orifice 301n manufacturing procedure is performed.Fuel orifice 301n's adds
Work process is performed in manufacturing procedure S7 and manufacturing procedure S8.
Manufacturing procedure S7 be using water jet laser 500 performs before finishing (manufacturing procedure S8) in advance formation partly into
The fuel orifice 301n of product 301 ' position processing through hole 301n ' process.It is also on the books in patent document 1, using small
Then laser power is small and be difficult to be formed through hole for the water jet laser in footpath, and use the water jet laser in big footpath then the circularity in hole,
Cylindricity etc. can be deteriorated.And think, can then cause surface roughness (face precision) to deteriorate during increase laser power.Therefore, lead to
Cross to form through hole 301n ' and finish through hole 301n ' machined surface using the water jet laser 500 of path, from
And improve fuel orifice 301n machining accuracy (circularity, cylindricity, surface roughness etc.).
In addition, in the present embodiment to being illustrated using the water jet laser 500 of water, but can also use water with
Outer liquid.In the case of the liquid beyond using water, the term used in this manual " water " is entered as " liquid "
Row explanation.
In manufacturing procedure S7, through hole 301n ' is formed on semi-finished product 301 '.Through hole 301n ' processing is with usual
Laser Processing (in gas laser machine), electro-discharge machining, water jet Laser Processing etc. carry out.It can also use in addition
Processing method, but the processing method that larger stress is produced on semi-finished product 301 ', then as described above by the firm of semi-finished product 301 '
Property restriction, can cause fuel orifice configuration or angle of inclination design it is no longer simple and should avoid.
Next, in manufacturing procedure S8, as shown in figure 11, being entered by water jet laser to through hole 301n ' side wall
Row finishing, and complete fuel orifice 301n.That is, fuel orifice 301n side can be formed by water jet laser 500
Wall.The laser beam 501 produced in generating device of laser (not shown) is oriented to condenser lens 502 by optical fiber etc..It is saturating focusing on
The laser beam collected on mirror 502 is imported into water receptacle 503 from the window 503a for being located at water receptacle (liquid container) 503.Water receptacle
503 possess feed water inlet (liquid supply port) 503b and spray the water jet 500a of high pressure nozzle 503c.Make to be imported into water receptacle
Laser beam in 503 is irradiated in water jet (water column) 500a inside.Laser beam repeats complete in water jet 500a inner face
Reflex, and advanced with the state being enclosed in water jet 500a.Using the processing method, water jet 500a formation concurrent flows
Beam, therefore make position and the angle change of the parallel-flow beam relative to water jet laser 500 of semi-finished product 301 ', and can be formed
With desired diameter, angle of inclination, shape fuel orifice 301n.Further, it is possible to be suppressed using the cooling effect of water
The heat of semi-finished product 301 ' is acted on, and reduces the surface roughness of fuel orifice 301n machined surface.
Stage after manufacturing procedure S8 terminates, Fig. 8 IX-IX sections turn into the section shape shown in Figure 12.
In the case where fuel orifice 301n is processed as into full shear surface using punch process, by fuel orifice
301n extrusion processes are finished (with reference to patent document 2) to constitute face 301g to valve seat using machining after blind hole shape.
In the case of this processing sequence, generation on face 301g opening portion can be constituted towards valve seat in fuel orifice 301n and flown
Side, it is therefore desirable to the process for removing the overlap.In the present embodiment, the manufacturing procedure S7 of fuel orifice 301n processing is being carried out
And before manufacturing procedure S8, implement the machining (manufacturing procedure S6) for the finishing that valve seat constitutes face 301g.In this reality
Apply in example, fuel orifice 301n is processed by water jet laser 500, so as to one side to fuel orifice 301n
It is processed while being cleaned with water jet to machined surface.Therefore, using manufacturing procedure S6, manufacturing procedure S7 and manufacturing procedure
S8 order need not then go the process of deburring.
Process in order to cancel deburring, can also only perform manufacturing procedure S8 after manufacturing procedure S6.Therefore,
It can be carried out according to manufacturing procedure S7, manufacturing procedure S6 and manufacturing procedure S8 order.Also, manufacturing procedure S7 is also not sometimes
It is necessary.At this point it is possible to not perform manufacturing procedure S7 and performed according to manufacturing procedure S6, manufacturing procedure S8 order.In this case,
Without fuel orifice 301n roughing, and utilize the formation fuel orifice of water jet laser 500 301n side wall.At this
In embodiment, it the particularly important is and be changed without manufacturing procedure S3, manufacturing procedure S6 and the manufacturing procedure S8 orders of these three to hold
OK, other manufacturing procedures can then be omitted as needed.Or, the other processing for not having to record in Fig. 3 can also be added
Process.
In the Fuelinjection nozzle manufactured with the manufacture method of the present embodiment, the recess 301o formed by punch process reveals
For spray-hole formation part 301 outer surface, but the surface roughness of the machined surface is smaller and deposit is difficult to adhere to.It is logical
Cross water jet laser machine the fuel orifice 301n to be formed surface roughness of the surface roughness than recess 301o it is big, still
Surface roughness can be made to turn into less value, and deposit is prevented from due to being cleaned all the time by fuel injection
Attachment.
Laser machined by water jet in the bottom surface formation fuel orifice 301n of recess, in spray-hole formation part
In the state of 301 rigidity reduction, it will not be acted on spray-hole formation part 301 compared with big load, it is to avoid formed in spray-hole
Larger stress is produced on part 301, therefore fuel orifice 301n configuration and the design freedom at angle of inclination are improved.
Also, even if fuel orifice 301n is processed using electro-discharge machining, also it is prevented from punch process etc.
Semi-finished product 301 ' are acted on compared with big load.But, in electro-discharge machining temperature is too high and fuel orifice 301n machined surface
Surface roughness easily deteriorates.Especially as the construction of the present embodiment, multiple fuel orifice 301n are formed, and then at it
When export department forms the diameter recess 301o bigger than fuel orifice 301n, then the sectional area of heat dissipation path diminishes.Thus cause
Temperature caused by electro-discharge machining rises increase and the surface roughness of machined surface deteriorates.Also, to multiple fuel orifices
In the case of being processed, with semi-finished product 301 ' are in high temperature and when occurring the state of thermal deformation and processing fuel orifice one by one,
Then being possible to cause the machining accuracy of fuel orifice reduces.By using water jet Laser Processing to fuel orifice 301n
It is processed, so as to solve above-mentioned problem.
Fuel orifice 301n example is illustrated using Figure 13 to Figure 15.Figure 13 shows fuel orifice 301n's
First case.Figure 14 shows fuel orifice 301n second case.Figure 15 shows the 3rd of fuel orifice 301n.
In the first case shown in Figure 13, fuel orifice 301n and recess 301o are identical with said structure.Fuel injection
Hole 301n is constituted from entrance opening 301na to exit opening 301nb by the straight circular hole of constant diameter.
In the case where forming this fuel orifice 301n of this example, the axis angle of water jet laser 500 is constant, and
The axis of water jet laser 500 is set relatively to be moved relative to semi-finished product 301 ' in fuel orifice 301n circumference.Should
In the case of, it can both make the axis of water jet laser 500 and either one movement of semi-finished product 301 ', can also move two sides.
Or, the state that can be also kept the axis of water jet laser 500 to fix according to condition forms straight with water jet laser 500
Footpath identical fuel orifice 301n.
It is peeling-off (600a, 600b) in entrance opening 301na fuel flowings in the fuel orifice 301n of this example,
Therefore fuel orifice 301n substantive diameter is the D ' (Φ D ' ＜ Φ D) smaller than the dimension D of true form.Therefore, at this
In the fuel orifice 301n of example, the jet velocity of fuel accelerates and there is the arrival of injected fuel spray apart from elongated tendency.
In Fuelinjection nozzle, in order to control the arrival distance (range) of injected fuel spray, it is necessary to by the length of fuel orifice
Degree L is adjusted to appropriate value to diameter D ratio (L/D).Especially in the case of the inner direct fuel of combustion chamber
Avoid fuel from adhering in the cylinder wall surface or piston face for constitute combustion chamber, or kept away in air intake duct in the case of spray fuel
Exempt from fuel on air intake duct internal face to adhere to, it is desirable to be ejected into up to apart from short (grazing shot journey) injected fuel spray.Figure 14 and Figure 15
Shown fuel orifice 301n is the concrete example that the fuel orifice apart from short injected fuel spray is reached for realizing.
In the second case shown in Figure 14, fuel orifice 301n contracts from entrance opening 301na towards exit opening 301nb
Footpath.Recess 301o is identical with said structure.Face 301g, which is constituted, from valve seat flows into fuel orifice 301n fuel in fuel injection
Sprayed flowed in the 301n of hole radially compressedly after.The diffusion component of radial direction dies down slightly, but due to making fuel orifice
301n length L be fuel not by the length of complete rectification, therefore the diffusion component of radial direction can be remained.In this case, injection
Speed slows down, and result is can to shorten the arrival distance of spraying.
In the case where forming this fuel orifice 301n of this example, make the axis of water jet laser 500 relative to fuel
Spray-hole 301n central axis 301nd is tilted.Further, it is possible to which the axis relative to water jet laser 500 makes semi-finished product 301 '
Rotate to be processed centered on fuel orifice 301n central axis 301nd.In addition, can also be by semi-finished product
301 ' fix and move water jet laser 500 to be processed.But, if, there is water jet in mobile water jet laser 500
The possibility that 500a gets muddled, and there is fuel orifice 301n machining accuracy deterioration.It is therefore contemplated that
Make the position of semi-finished product 301 ' and angles shifts while it is more real to be processed.
In the 3rd shown in Figure 15, fuel orifice 301n oval in shape.Although recess 301o can also be circle
Hole, but ordinatedly oval in shape is then more preferably with fuel orifice 301n.The diameter (D) of the fuel orifice of this example is employed
Area and the entrance opening 301na of fuel orifice ellipse area (long side is that a13, short side are b13 in this example) are equal
Diameter of a circle D.The oval area is minimum area in fuel orifice 301n.Also, ellipse area is from entrance opening
301na to exit opening 301nb, the sectional area in hole gradually increases.
Using this example structure when, relative to from valve seat constitute face 301g upstream flow into fluid, entrance opening 301na
Significantly perforate, thus when positive round compared with can suppress peel off.Fuel from entrance opening 301na inflows is in fuel orifice
Sprayed after being flowed in 301n towards radial diffusion.Thereby, it is possible to increase radial diffusion composition, and reduce injection direction of principal axis
Jet velocity, therefore, it is possible to being sprayed to up to distance for further shortening Fuelinjection nozzle.
The fuel orifice 301n of this example can make the axis of water jet laser 500 relative to combustion in the same manner as second case
Material spray-hole 301n central axis 301nd is obliquely processed.
As long as in addition, the spray-hole recess deposit of the present embodiment is difficult to adhere to, and can typically be added using punching press
Work.As long as by be surface-treated etc. deposit can be avoided as problem, then it can also be added by machining or electric discharge
Work is processed to recess 301o.As long as in addition, being that by the processing method of the performance equal with punch process, so that it may profit
Recess 301o is processed with the processing method, and aperture (fuel orifice) added using water jet Laser Processing
Work.
In addition, including various modifications example the invention is not restricted to the various embodiments described above.Such as above-described embodiment is to hold
It is readily understood the present invention and describe in detail, however it is not limited to possess whole structures.Further, it is possible to by the structure of some embodiment
A part is replaced into the structure of another embodiment, and the structure of another embodiment can be added to the structure of some embodiment.
Also, a part for the structure for each embodiment, can carry out the addition, deletion, displacement of other structures.
Symbol description
301-spray-hole formation part；301 '-semi-finished product；301g-valve seat constitutes face；301g ', 301g "-do not complete
The valve seat of state constitutes face；301n-fuel orifice；The fuel orifice of 301n '-unfinished state；301o-recess,
301r '-extrusion portion；403rd, 404-drift；500-water jet laser；500a-water jet；501-laser beam；502-poly-
Focus lens；503-water receptacle (liquid container)；503a-window；503b-feed water inlet (liquid supply port)；503c-nozzle；S1
~S8 manufacturing procedures.
Claims (2)
1. a kind of manufacture method of Fuelinjection nozzle, the Fuelinjection nozzle has：Formed and form the surface of part in spray-hole
Multiple recesses；And outlet is opened up in the respective inner side of above-mentioned multiple recesses and is opened at the back side of above-mentioned spray-hole formation part
If multiple fuel orifices of entrance, the manufacture method of above-mentioned Fuelinjection nozzle is characterised by,
Perform following process：The recess manufacturing procedure of above-mentioned multiple recesses is formed by punch process；Work is processed in above-mentioned recess
Valve seat is performed after sequence and constitutes face manufacturing procedure, it is at the back side of above-mentioned spray-hole formation part that the valve seat, which constitutes face manufacturing procedure,
Form the valve seat composition face for being provided with the valve seat abutted for valve element；And pass through liquid after above-mentioned valve seat constitutes face manufacturing procedure
Jet laser machines the fuel orifice manufacturing procedure for forming above-mentioned fuel orifice respectively in above-mentioned multiple recesses,
The above-mentioned entrance for the fuel orifice processed in above-mentioned fuel orifice manufacturing procedure is opened on above-mentioned valve seat composition face,
And the surface roughness of the fuel orifice is bigger than the surface roughness of above-mentioned recess.
2. the manufacture method of Fuelinjection nozzle according to claim 1, it is characterised in that
Aforesaid liquid jet is laser machined to be processed to the side wall of above-mentioned fuel orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710632129.8A CN107313884B (en) | 2013-04-23 | 2014-03-05 | The manufacturing method of fuel injection valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-090139 | 2013-04-23 | ||
| JP2013090139A JP6039492B2 (en) | 2013-04-23 | 2013-04-23 | Fuel injection valve and manufacturing method thereof |
| PCT/JP2014/055539 WO2014174906A1 (en) | 2013-04-23 | 2014-03-05 | Fuel injection valve and production method thereof |
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| CN201710632129.8A Division CN107313884B (en) | 2013-04-23 | 2014-03-05 | The manufacturing method of fuel injection valve |
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| CN105143659A CN105143659A (en) | 2015-12-09 |
| CN105143659B true CN105143659B (en) | 2017-07-18 |
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| CN201710632129.8A Active CN107313884B (en) | 2013-04-23 | 2014-03-05 | The manufacturing method of fuel injection valve |
| CN201480022851.4A Active CN105143659B (en) | 2013-04-23 | 2014-03-05 | Fuelinjection nozzle and its manufacture method |
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| CN201710632129.8A Active CN107313884B (en) | 2013-04-23 | 2014-03-05 | The manufacturing method of fuel injection valve |
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| JP (1) | JP6039492B2 (en) |
| CN (2) | CN107313884B (en) |
| WO (1) | WO2014174906A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014226770A1 (en) * | 2014-12-22 | 2016-06-23 | Continental Automotive Gmbh | Nozzle body and fluid injection valve |
| DE102014226762A1 (en) * | 2014-12-22 | 2016-06-23 | Continental Automotive Gmbh | Nozzle body and fluid injection valve |
| US9611824B2 (en) * | 2015-02-18 | 2017-04-04 | Caterpillar Inc. | Process for manufacturing an injector body |
| JP6575559B2 (en) | 2017-04-27 | 2019-09-18 | トヨタ自動車株式会社 | Fuel injection valve |
| DE102018200341A1 (en) * | 2018-01-11 | 2019-07-11 | Robert Bosch Gmbh | Valve for metering a fluid, in particular fuel injection valve |
| CN108547710B (en) * | 2018-02-13 | 2020-09-29 | 上海柯来浦能源科技有限公司 | Direct injection gas nozzle and engine and power system thereof |
| JP7124351B2 (en) | 2018-03-08 | 2022-08-24 | 株式会社デンソー | Fuel injection valve and fuel injection system |
| JP7206601B2 (en) * | 2018-03-08 | 2023-01-18 | 株式会社デンソー | Fuel injection valve and fuel injection system |
| DE102018113660A1 (en) * | 2018-06-08 | 2019-12-12 | Liebherr-Components Deggendorf Gmbh | Nozzle for injecting fuel |
| GB2593892B (en) * | 2020-04-06 | 2022-08-03 | Delphi Automotive Systems Lux | Fuel Injector |
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| US5902499A (en) * | 1994-05-30 | 1999-05-11 | Richerzhagen; Bernold | Method and apparatus for machining material with a liquid-guided laser beam |
| US6826833B1 (en) * | 1999-08-11 | 2004-12-07 | Robert Bosch Gmbh | Fuel injection valve and a method for manufacturing exit outlets on the valve |
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| JP3934547B2 (en) * | 2002-12-27 | 2007-06-20 | 株式会社デンソー | Method for producing injection hole member |
| JP5559962B2 (en) * | 2008-09-05 | 2014-07-23 | 日立オートモティブシステムズ株式会社 | Fuel injection valve and nozzle processing method |
| JP2011045906A (en) * | 2009-08-26 | 2011-03-10 | Denso Corp | Machining method and machining system for micromachining part in machine component |
| JP2010155267A (en) * | 2008-12-26 | 2010-07-15 | Denso Corp | Method of processing fine pore in structural component |
| JP5071487B2 (en) * | 2010-01-06 | 2012-11-14 | 株式会社デンソー | Laser processing apparatus and laser processing method |
| CN101737218B (en) * | 2010-01-19 | 2012-07-18 | 上海交通大学 | Nozzle for direct-injection engine |
| CN202493369U (en) * | 2012-03-20 | 2012-10-17 | 烟台福尔精密机械有限公司 | Novel fuel injector with inverted tapered orifice |
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2013
- 2013-04-23 JP JP2013090139A patent/JP6039492B2/en active Active
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2014
- 2014-03-05 CN CN201710632129.8A patent/CN107313884B/en active Active
- 2014-03-05 WO PCT/JP2014/055539 patent/WO2014174906A1/en active Application Filing
- 2014-03-05 CN CN201480022851.4A patent/CN105143659B/en active Active
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| US5902499A (en) * | 1994-05-30 | 1999-05-11 | Richerzhagen; Bernold | Method and apparatus for machining material with a liquid-guided laser beam |
| US6826833B1 (en) * | 1999-08-11 | 2004-12-07 | Robert Bosch Gmbh | Fuel injection valve and a method for manufacturing exit outlets on the valve |
| CN101173644A (en) * | 2006-10-30 | 2008-05-07 | 卡特彼勒公司 | Fuel injector remanufacturing method and remanufactured fuel injector |
| CN103028847A (en) * | 2008-12-26 | 2013-04-10 | 株式会社电装 | Machining method and machining system for micromachining a part in a machine component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105143659A (en) | 2015-12-09 |
| JP2014214622A (en) | 2014-11-17 |
| CN107313884B (en) | 2019-08-13 |
| JP6039492B2 (en) | 2016-12-07 |
| WO2014174906A1 (en) | 2014-10-30 |
| CN107313884A (en) | 2017-11-03 |
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Address after: Ibaraki Patentee after: Hitachi astemo Co.,Ltd. Address before: Ibaraki Patentee before: HITACHI AUTOMOTIVE SYSTEMS, Ltd. |
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