CN1637270A - Electromagnetic actuating valve of fuel injection device - Google Patents
Electromagnetic actuating valve of fuel injection device Download PDFInfo
- Publication number
- CN1637270A CN1637270A CN 200410103688 CN200410103688A CN1637270A CN 1637270 A CN1637270 A CN 1637270A CN 200410103688 CN200410103688 CN 200410103688 CN 200410103688 A CN200410103688 A CN 200410103688A CN 1637270 A CN1637270 A CN 1637270A
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- China
- Prior art keywords
- stator
- armature
- electromagnetic actuating
- actuating valve
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000000446 fuel Substances 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 title claims description 19
- 239000007924 injection Substances 0.000 title claims description 19
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Images
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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
- F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0043—Two-way valves
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A fuel jet device has a solenoid operating valve 10 which is provided with a housing 11, the stator 14 having an exciting coil 13 built therein and including the attraction surface 16a on a lower surface, an armature 16 arranged to face the stator 14, a stopper member 15 fitted in the stator 14. An outer circumference surface of the stator 14 is fitted in an upper part 3a of an injector body 3, and the stator 14 is gripped by a lower surface of the housing 11 at an upper part and a gripping surface 15c of a stopper member 15 at a lower part to be retained in an axial direction. The attraction surface 16a is formed on a part of the armature 16 facing the attraction surface of the stator 14, and a projection ring 16c projecting from the attraction surface 16a is formed on a part facing a lower surface of the stopper member 15 to regulate movement of the armature 16.
Description
Technical field
The present invention relates to the electromagnetic actuating valve of fuel injection system, it is spurted into fuel under high pressure in the cylinder of motor.
Background technique
Usually, fuel injection system (nozzle) is arranged so that this fuel injection system can spurt into the cylinder of motor from the fuel under high pressure that fuel injection pump is supplied with.Conventional fuel injection system comprises the supply of fuel parts, places the needle valve member of this fuel injection system body interior, the electromagnetic actuating valve that places the jet element on this needle valve member tip and be used to activate this needle valve member.This electromagnetic actuating valve activates this needle valve member to eject fuel under high pressure from this jet element.
The Japanese Patent Application Publication No.2002-147310 of Shening (the 2nd to 5 page and Fig. 1) does not disclose a kind of electromagnetic actuating valve 70 that is used to activate needle valve member.Electromagnetic actuating valve 70 shown in Figure 4 places the top 3a of injector body 3.Electromagnetic actuating valve 70 comprises frame 71, comprise the stator 73 of a field coil 72, place around the stator 73 with the housing 74 that keeps stator 73, can along one near or the armature 75 that moves away from the direction of stator 73, and be assemblied in stator 73 inner and can with armature 75 contacted retainers 76.
Stator 73 forms cylindrical shape.The retainer 76 of tubulose is assemblied in the inside of stator 73.Armature 75 is set to along axially facing stator 73.Stator 73 has formed suction surface 73a at the end face of armature 75 sides.Armature 75 is formed with suction surface 75a that faces mutually with suction surface 73a and the shaft portion 75b that is kept slidably by valve body 78.Thereby armature 75 has T shape longitudinal cross-section as shown in Figure 4.Shaft portion 75b and stator 73 opposing end faces are facing to the valve seat of valve body 78.Around this end face of shaft portion 75b, be provided with base portion 77.If the suction surface 75a of armature 75 moves towards the suction surface 73a of stator 73, base portion 77 is opened.Thereby, just discharge and open the jet element (not shown) thereby be applied to pressure on the needle valve member (not shown) that places below the electromagnetic actuating valve as shown in Figure 4 70.
Frame 71 keeps an end face of stator 73.The cascade retaining part 74a of housing 74 keeps the outward edge of stator 73 other ends.Thereby, determined the axial position of stator 73.On the upper surface (suction surface 75a) of armature 75, so be formed with a protruding 75c so that should can contact with the end face of the retainer 76 that is assemblied in stator 73 inside by projection 75c.Thereby, when field coil 72 be energized and armature 75 when stator 73 moves, can stop the direct contact between the suction surface 75a of the suction surface 73a of stator 73 and armature 75.
In recent years, in order to protect environment, reduction CO2 emission and purifying vehicle exhaust gas discharged have been initiated.Especially, formed and improved and diesel engine correlation technique such as multi-injection for example or the requirement that increases fueling injection pressure.So a kind of quick response electromagnetic actuating valve that needs sparger is to realize the improvement in the above-mentioned technology.Owing to need a kind of stator of quick response, used a kind of pressed powder type stator as stator.Yet the strength and stiffness of pressed powder type stator are very low and pressed powder type stator is very crisp, because pressed powder type stator forms mainly to keep mechanical bond by the compression iron powder.Therefore, retainer 76 places a certain position so that retainer 76 can hold armature 75 vibrations at work.
In said structure, be used to keep the element (housing 74) of stator 73 and be used to stop that the stopper (retainer 76) of armature 75 all is necessary.Therefore increased cost.
Because the assembling capacity on motor, the size of fuel injection system (radial dimension particularly) is restricted.In addition, housing 74 arranges that around stator 73 retainer 76 is assemblied in stator 73 inside.Therefore, reduced the size of the suction surface 73a of common stator 73.So, also reduced the area of magnetic pole and the magnetism characteristic that weakened.
Summary of the invention
Therefore, an object of the present invention is by increasing exciting current and the quick response electromagnetic actuating valve of fuel injection system being provided by the magnetism characteristic of improving stator.
According to an aspect of the present invention, fuel injection system electromagnetic actuating valve comprises a frame, a stator, armature, holder and a retainer.Frame is fixed this stator.Stator comprises a field coil.Armature along one near or away from the direction to-and-fro motion of stator.Armature is formed at a base portion in the electromagnetic actuating valve by the to-and-fro motion open and close.Holder is along this stator of axial maintenance.When stator attracted armature and armature towards stator movement, retainer stopped armature.Holder and retainer provide as an integral member.Thereby, can reduce the number and the cost of parts.
Because holder and retainer are provided by integral member, can increase the area of a magnetic pole of stator.Thereby, can improve magnetic property.So, the electromagnetic actuating valve of a kind of quick response of fuel injection system can be provided.
Description of drawings
From research for detailed description, claims and the accompanying drawing of following formation the application's part, be appreciated that the characteristics and the advantage of specific embodiment, and the function of operating method and associated components.In the accompanying drawings:
Fig. 1 is the longitudinal cross-section view, and it shows the sparger with electromagnetic actuating valve of first specific embodiment according to the present invention;
Fig. 2 is the longitudinal cross-section view, and it shows the substantial section according to the electromagnetic actuating valve of first specific embodiment;
Fig. 3 is the longitudinal cross-section view, and it shows the substantial section with electromagnetic actuating valve of second specific embodiment according to the present invention; With
Fig. 4 is the longitudinal cross-section view, and it shows the basic property part of the electromagnetic actuating valve of correlation technique.
Embodiment
(first specific embodiment)
With reference to figure 1, show the fuel injection system (sparger) 1 of first specific embodiment according to the present invention.
Sparger 1 shown in Figure 1 comprises injector body 3, electromagnetic actuating valve 10, fuel supply parts 25, needle valve member 30 and jet element 40.Injector body 3 forms cylindrical shape.Electromagnetic actuating valve 10 places on Fig. 1 injector body 3.Fuel under high pressure is supplied to supply of fuel parts 25 from fuel injection pump by being total to rail.Needle valve member 30 places injector body 3.Jet element 40 places the bit point of needle valve member 30.
The electromagnetic actuating valve 10 of first specific embodiment comprises frame 11, locking nut 12, cylinder shape stator 14, cylindrical retainer 15, armature 16 and plate 19, as shown in Figure 2.Electromagnetic actuating valve 10 is formed with base portion 18.Frame 11 places on Fig. 2 injector body 3.Locking nut 12 couples together the top 3a of frame 11 and injector body 3.Stator 14 contacts with the lower surface of frame 11 and includes field coil 13.The lower surface of stator 14 provides suction surface 14a.Retainer 15 is assemblied in stator 14 inside.Armature 16 place under the stator 14 so that armature 16 can near or away from stator 14.Armature 16 is formed with the suction surface 16a that faces mutually with the suction surface 14a of stator 14 and the shaft portion 16b slidably in valve body 17 inside.The diameter of shaft portion 16b is littler than the diameter of suction surface 16a.Base portion 18 is formed between the end portion of shaft portion 16b of armature 16 and the valve body 17 with open and close oil circuit 17a.Plate 19 places below Fig. 2 valve body 17 and is formed with pressure chamber 19a.
Be included in the stator 14 field coil 13 by one with place connector 23 in the lead 20a that is connected of terminal 20 accept exciting current.Outwards give prominence to diametrically to form major diameter part 15a as shown in Figure 2 the outer periphery surface bottom that is assemblied in the retainer 15 of stator 14 inside.Thereby being formed between the small diameter portion 15b on the major diameter part 15a of retainer 15 formed step in major diameter part 15a and Fig. 2.This step provides the maintenance face 15c that is used to keep stator 14.The inner periphery surface bottom of stator 14 provides large diameter hole part 14b, and it matches with the major diameter part 15a of retainer 15.
Retainer 15 is installed in the stator 14 and stator 14 is fixed by frame 11.Thereby stator 14 is fixed between the maintenance face 15c of the lower surface of frame 11 and retainer 15 in the axial direction.The outer periphery surface of stator 14 is suitable for the inner periphery surface of the top 3a of injector body 3.The wall of injector body 3 top 3a is thinner than the wall of injector body 3 bottom 3b.So, can form wide suction surface 14a.
Be used to make the helical spring 21 of armature 16 downward biases to place retainer 15 inside among Fig. 2.Fuel discharge passage 22 forms from the inside of retainer 15 and extends upward.
Outstanding ring 16c forms the major diameter part 15a that gives prominence to and face retainer 15 from suction surface 16a.When armature 16 moved up owing to the excitation of field coil 13, outstanding ring 16c contacted with the lower surface of retainer 15.Thereby, limited moving of armature 16.
Supply of fuel parts 25 form from injector body 3 outstanding near the 3a of top.The fuel channel 27 that supply of fuel parts 25 are formed with supply of fuel hole 26 and draw from supply of fuel hole 26.Fuel channel 27 has been divided into fuel channel 28 that is formed at injector body 3 inside and the fuel channel 29 that communicates with pressure chamber 19a.
Needle valve member 30 is formed under the electromagnetic actuating valve 10 so that needle valve member 30 is extended along the bottom of injector body 3.Needle valve member 30 comprises injector body 3 and nozzle body 32 and is formed with jack 3b.Nozzle body 32 is connected to the bottom of injector body 3 by locking nut 31.Jack 3b forms in injector body 3 in the axial direction, and slave plate 19 extends downwards.Be furnished with the pin 34 and the ring part 33 of control pin 33, a part in the jack 3b.Pin 34 moves axially simultaneously with control pin 33 and contacts with the lower end of control pin 33.Ring part 35 is round the bottom of control pin 33 and the contacted contact space in top of pin 34.
Pin 34 places the cushion hole 32a that is formed at nozzle body 32 slidably.The upper end of the small diameter portion 34a of pin 34 contacts with control pin 33.Jet element 40 places the end portion of nozzle body 32.Jet element 40 is formed with the base portion 41 between the end portion that is arranged at nozzle body 32 and pin 34, and spray-hole 42.The fuel storage tank 32b that is used for fuel-in-storage is formed in the intermediate portion of cushion hole 32a.Injector body 3 be formed be parallel to jack 3b fuel channel 28 so that fuel channel 28 communicates with fuel storage tank 32b.Injector body 3 is formed with the leakage way 36 that is used to return fuel.
Below, will explain the operation of sparger 1 and electromagnetic actuating valve 10.
The fuel that will be supplied into cylinder is fed into sparger 1 by pressure pcl collector and supply of fuel hole 26 from fuel injection pump.Fuel is supplied to pressure chamber 19a by fuel channel 27 and fuel channel 29.Simultaneously, fuel is supplied to fuel storage tank 32b by fuel channel 27 and fuel channel 28.
When fuel was assembled at pressure chamber 19a mesohigh place, the lower end of the shaft portion 16b of armature 16 reached the oil circuit 17a and the closed base part 18 of valve body 17 owing to the deflecting force of helical spring 21.Fuel pressure among the pressure chamber 19a and place the helical spring 37 of the jack 3b of injector body 3 to overcome the fuel pressure of fuel storage tank 32b.So, block spray-hole 42 thereby control pin 33 moves down and depress pin 34.
If provide electric current to field coil 13, field coil 13 is energized and forms magnetic circuit between the suction surface 16a of the suction surface 14a of stator 14 and armature 16.Thereby armature 16 moves up towards the deflecting force of stator 14 against helical spring 21.If the outstanding ring 16c of armature 16 touches the lower surface of retainer 15, armature 16 just stops to move up.
Thereby base portion 18 is opened, and the fuel among the pressure chamber 19a is disposed to the outside by base portion 18, oil circuit 17b and discharge passage 22.Because the fuel pressure among the pressure chamber 19a reduces, the fuel pressure among the fuel storage tank 32b overcome the deflecting force of fuel pressure among the pressure chamber 19a and helical spring 37 and force control pin 33 and pin 34 upwards.Thereby spray-hole 42 is opened and fuel under high pressure ejects from jet element 40.
As mentioned above, in the electromagnetic actuating valve 10 according to first specific embodiment, the outer periphery surface of stator 14 is assemblied in the inboard of the top 3a of injector body 3.The inner periphery surface of stator 14 has step, and the retainer 15 with cascade supporting surface 15c is fitted into stator 14.Therefore, stator 14 is fixed between the maintenance face 15c of the lower surface of frame 11 and retainer 15 in the axial direction.In addition, omitted the housing of the outer periphery surface that is assemblied in stator 14.Therefore, the external diameter of stator 14 can increase accordingly.Thereby the area of suction surface 14a can enlarge and the area of magnetic pole can enlarge.Thereby, can improve the magnetic property between the suction surface 16a of the suction surface 14a of stator 14 and armature 16.Thereby, the quick response electromagnetic actuating valve 10 of sparger 1 can be provided.In addition, owing to omitted housing, can reduce cost.
(second specific embodiment)
Below, will be based on the electromagnetic actuating valve 50 of Fig. 3 explanation second specific embodiment according to the present invention.Electromagnetic actuating valve 50 shown in Figure 3 comprises connecting element 51, frame 52, housing 53, locking nut 56, cylinder shape stator 55, armature 57 and plate 60.Electromagnetic actuating valve 50 is formed with base portion 59.Among Fig. 3, connecting element 51 places on the injector body 3.Among Fig. 3, frame 52 place connecting element 51 below.Housing 53 is assemblied in the outer periphery surface of frame 52.Locking nut 56 couples together the top 3a of housing 53 and injector body 3.Stator 55 contacts with the lower surface of frame 52 and includes field coil 54.The lower surface of stator 55 provides suction surface 55a.Among Fig. 3, armature 57 place below the stator 55 so that armature 57 can near or away from stator 55.Armature 57 is formed with the suction surface 57a that faces mutually with the suction surface 55a of stator 55 and the shaft portion 57b slidably in valve body 58 inside.The diameter of shaft portion 57b is littler than the diameter of suction surface 57a.Base portion 59 is formed between the end portion of shaft portion 57b of armature 57 and the valve body 58 with open and close oil circuit 58a.Plate 60 places below the valve body 58 and is formed with pressure chamber 60a.
By stator 55 being mounted to frame 52 and housing 53, stator 55 is fixed between the following lock portion 53b of the lower surface of frame 52 and housing 53 in the axial direction.Be used to make the helical spring 62 of armature 57 downward biases radially to place stator 55 inside, and cancelled the retainer in first specific embodiment.Thereby the internal diameter of stator 55 can reduce and suction surface 55a can enlarge accordingly.
Be included in the stator 55 field coil 54 by one with place connecting element 51 in the lead 61a that is connected of terminal 61 accept exciting current.Frame 52 is formed with fuel discharge passage 63.
Be arranged among Fig. 3 identical in supply of fuel parts, needle valve member and the jet element under the electromagnetic actuating valve 50 and first specific embodiment.
In the electromagnetic actuating valve 50 of second specific embodiment, if when fuel is assembled at pressure chamber 60a mesohigh place, the lower end of the shaft portion 57b of armature 57 reaches the oil circuit 58a and the closed base part 59 of valve body 58 owing to the deflecting force of helical spring 62.Fuel pressure among the pressure chamber 60a and place the helical spring 37 of the jack 3b of injector body 3 to overcome the fuel pressure of fuel storage tank 32b.So, block spray-hole 42 thereby control pin 33 moves down and depress pin 34.
If provide electric current to field coil 54, field coil 54 is energized and forms magnetic circuit between the suction surface 57a of the suction surface 55a of stator 55 and armature 557.Thereby in Fig. 3, armature 57 moves up towards the deflecting force of stator 55 against helical spring 62.If the outstanding ring 57c of armature 57 touches the lower surface of the following lock portion 53b of housing 53, armature 57 just stops to move up.
Thereby base portion 59 is opened, and the fuel among the pressure chamber 60a is disposed to the outside by oil circuit 58b and discharge passage 63 from base portion 59.Because the fuel pressure among the pressure chamber 60a reduces, the fuel pressure among the fuel storage tank 32b overcomes the deflecting force of fuel pressure among the pressure chamber 60a and helical spring 37 and forces control pin 33 and pin 34 to move up.Thereby spray-hole 42 is opened and fuel under high pressure ejects from jet element 40.
As mentioned above, in the electromagnetic actuating valve 50 according to second specific embodiment, the outer periphery surface of stator 55 is assemblied in housing 53 inside and helical spring 62 inserts stator 55.Therefore, stator 55 is fixed between the following lock portion 53b of the lower surface of frame 52 and housing 53 in the axial direction.In addition, do not assemble retainer in stator 55 inside.Therefore, can reduce the internal diameter of stator 55 and enlarge suction surface 55a.Thereby, can increase the area of magnetic pole and can correspondingly improve the suction surface 55a that is arranged at stator 55 and the suction surface 57a of armature 57 between magnetic property.Thereby, the quick response electromagnetic actuating valve 50 of sparger 1 can be provided.In addition, by the cancellation retainer, can reduce cost.
Be used to limit the part that armature moves if keep the element of stator to provide in the axial direction, the structure of electromagnetic actuating valve is not limited to the structure of above-mentioned specific embodiment.This is that the suction surface of the attraction armature of stator can enlarge and the area of magnetic pole can enlarge because if keeping the element of stator to provide in the axial direction is used to limit the part that armature moves.And in this case, can improve magnetic property.For example, when field coil placed stator interior, the parts of plastics that covers the connector of field coil can be from positional lock tightening under the stator, and when frame was integral body, frame can be from positional lock tightening on the stator.In addition, the parts of plastics of connecting element may extend to position under the field coil to be formed for stopping the retainer of armature.Thereby, can cancel housing and retainer, and the suction surface of stator can enlarge further.
Keep the following lock portion of stator can be formed on the injector body in the axial direction so that lock portion has the function of the stopper that is used to stop that armature moves down, this stopper replaces lock portion under forming on the housing of second specific embodiment.
The invention is not restricted to disclosed specific embodiment, but can limit as claims not deviating under the scope of the invention with a lot of embodied in other.
Claims (5)
1. the electromagnetic actuating valve (10,50) of a fuel injection system (1), this electromagnetic actuating valve (10,50) comprising:
A stator (14,55) that comprises a field coil (13,54); With
Energy along one near or away from this stator (14,55) the reciprocating armature (16 of direction, 57), this armature (16 wherein, 57) with this stator (14,55) together at the surface (16a of this armature (16,57) that faces with each other, 57a) with this stator (14,55) (14a has formed a magnetic circuit between 55a), and this armature (16 wherein on a surface, 57) by base portion (18 of to-and-fro motion open and close, 59), this base portion (18,59) is formed at electromagnetic actuating valve (10,50) in, it is characterized in that:
An integral member, it provides and has been used for this stator (14,55) being remained on the holder on this stator (14,55) axial direction and be used for stopping the retainer of this armature (16,57) when this stator (14,55) attracting this armature (16,57).
2. electromagnetic actuating valve as claimed in claim 1 (10,50), it also comprises:
A frame (11,52) that is used for fixing in the axial direction this stator (14,55); With
A locking nut (12,56) that is used for this stator (14,55) and this frame (11,52) are connected to fuel injection system (1) main body (3).
3. electromagnetic actuating valve as claimed in claim 1 or 2 (10), wherein:
This integral member is a retainer (15), and it is fitted into this stator (14) and is being formed with a small diameter portion (15b), outstanding major diameter part (15a) and the cascade surface (15c) that is positioned between this small diameter portion (15b) and this major diameter part (15a) of relative this small diameter portion (15b) radially outward on the side opposite with this armature (16).
4. electromagnetic actuating valve as claimed in claim 1 or 2 (50), wherein:
This integral member is a housing (53) that is used to cover this stator (55) outer periphery surface, and this housing (53) is formed with the radially inwardly outstanding projection (53b) of an inner periphery surface that covers this stator (55) from this housing (53),
This holder is provided by a surface of this projection (53b), and this surface is positioned on the side opposite with this armature (57); With
This retainer is provided by another surface that this projection (53b) is positioned at this armature (57) side.
5. electromagnetic actuating valve as claimed in claim 1 or 2 (50), wherein:
This integral member is a housing (53) that is used to cover the outer periphery surface of this housing (52) and this stator (55), and this housing (53) is formed with one and covers the radially inwardly outstanding projection (53b) of inner periphery surface of this stator (55) from this housing (53),
This holder is provided by a surface of this projection (53b), and this surface is positioned on the side opposite with this armature (57); With
This retainer is provided by another surface that this projection (53b) is positioned at this armature (57) side.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003427705 | 2003-12-24 | ||
| JP427705/2003 | 2003-12-24 | ||
| JP293885/2004 | 2004-10-06 | ||
| JP2004293885A JP4100387B2 (en) | 2003-12-24 | 2004-10-06 | Electromagnetically operated valve in fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1637270A true CN1637270A (en) | 2005-07-13 |
| CN100368680C CN100368680C (en) | 2008-02-13 |
Family
ID=34635673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101036882A Expired - Fee Related CN100368680C (en) | 2003-12-24 | 2004-12-24 | Electromagnetic actuating valve of fuel injection device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1557557B1 (en) |
| JP (1) | JP4100387B2 (en) |
| CN (1) | CN100368680C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4683035B2 (en) * | 2007-11-13 | 2011-05-11 | 株式会社デンソー | Injector |
| DE102008031905A1 (en) | 2008-07-08 | 2010-01-14 | Voith Patent Gmbh | Closure with thermal safety function for a hydrodynamic machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2936425A1 (en) * | 1979-09-08 | 1981-04-02 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE |
| US5207410A (en) * | 1992-06-03 | 1993-05-04 | Siemens Automotive L.P. | Means for improving the opening response of a solenoid operated fuel valve |
| DE4421947A1 (en) * | 1993-12-09 | 1995-06-14 | Bosch Gmbh Robert | Electromagnetically actuated valve |
| DE19832826C2 (en) | 1998-07-21 | 2000-08-17 | Bosch Gmbh Robert | Assembly procedure for fuel injector and pilot valve and fuel injector |
| JP4277158B2 (en) | 2000-04-11 | 2009-06-10 | 株式会社デンソー | Solenoid valve and fuel injection device using the same |
| JP3633885B2 (en) * | 2000-08-21 | 2005-03-30 | 株式会社デンソー | Electromagnetic valve device and fuel injection device using the same |
-
2004
- 2004-10-06 JP JP2004293885A patent/JP4100387B2/en not_active Expired - Lifetime
- 2004-12-01 EP EP20040028495 patent/EP1557557B1/en not_active Expired - Lifetime
- 2004-12-24 CN CNB2004101036882A patent/CN100368680C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP4100387B2 (en) | 2008-06-11 |
| EP1557557A2 (en) | 2005-07-27 |
| EP1557557B1 (en) | 2013-10-16 |
| JP2005207411A (en) | 2005-08-04 |
| CN100368680C (en) | 2008-02-13 |
| EP1557557A3 (en) | 2007-11-07 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20080213 Termination date: 20191224 |