CN103306876B - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- CN103306876B CN103306876B CN201310072666.3A CN201310072666A CN103306876B CN 103306876 B CN103306876 B CN 103306876B CN 201310072666 A CN201310072666 A CN 201310072666A CN 103306876 B CN103306876 B CN 103306876B
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- CN
- China
- Prior art keywords
- coupling sleeve
- external frame
- sleeve
- internal periphery
- fuel injector
- 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.)
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Classifications
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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
- 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
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
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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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
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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
- 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
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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
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8015—Provisions for assembly of fuel injection apparatus in a certain orientation, e.g. markings, notches or specially shaped sleeves other than a clip
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/851—Mounting of fuel injection apparatus provisions for adjusting the angular, rotational or axial position of injectors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a kind of fuel injector (1), it is with jet blower (10), switch valve (20) and the coupling sleeve (30) be arranged between jet blower (10) and switch valve (20), wherein, jet blower has predetermined nozzle external frame (12) at its longitudinal direction end intercept (11) place and switch valve has predetermined valve external frame (22) at its longitudinal direction end intercept (21) place, and wherein, coupling sleeve has predetermined sleeve Internal periphery (33), from first of coupling sleeve longitudinally end (31) jet blowers are fitted to wherein ordinatedly with its nozzle outer contour shape, jet blower is fixed in the orientation of the restriction relative to coupling sleeve, and from second of coupling sleeve longitudinally end (32) switch valves are fitted to wherein ordinatedly with its valve outer contour shape, switch valve is fixed in the orientation of the restriction relative to coupling sleeve.
Description
Technical field
The present invention relates to a kind of fuel injector of the multi-part type for internal-combustion engine.
Background technique
Have multiple cylinder by putting into practice known internal-combustion engine (such as marine diesel engine), wherein each is associated with at least one fuel injector, to give corresponding cylinder supply fuel.The part that such fuel injector is assembled in succession by multiple longitudinal direction mostly or parts (it must fix with certain orientation (such as in view of its longitudinal axis and rotational position thereof) or determine to each other) build.
For by putting into practice known fuel injector, these orientations to each other of multiple parts realize by means of so-called fitting pin (Passstift), and it joins in the cooperation pin-and-hole of parts.By the fuel injector of file DE2309134A such as known a kind of such multi-part type, wherein, nozzle arrangements carrys out orientation by fitting pin relative to nozzle holder.
But fitting pin has this shortcoming, namely easily fracture due to mechanical overload in its assembling at fuel injector or dismounting or cut off, this makes to become required in the repair work of the complexity at all parts place usually, especially in view of the taking-up of the fitting pin damaged.
Another shortcoming of fitting pin is, because the cooperation pin-and-hole holding fitting pin is introduced in the sealing surface between parts usually, fitting pin stretches out from sealing surface after its assembling, therefore in order to the reprocessing (such as grinding) of sealing surface is Cai intricately must remove fitting pin.
Summary of the invention
The object of the invention is the fuel injector providing a kind of multi-part type, and wherein, its parts carry out orientation to each other in the more simply and more mode of easy care.
This utilizes fuel injector according to claim 1 to realize.Improvement project of the present invention limits in the dependent claims.
According to the present invention, fuel injector has the jet blower for burner oil as multiple interconnective parts, for the switch valve (Schaltventil) that controls the injection of fuel and the coupling sleeve be arranged between jet blower and switch valve, wherein, jet blower has predetermined nozzle external frame at its longitudinal direction end intercept (Laengsendabschnitt) place and switch valve has predetermined valve external frame at its longitudinal direction end intercept place, and wherein, coupling sleeve has predetermined sleeve Internal periphery, longitudinally bring out a jet blower from first of coupling sleeve to be fitted to ordinatedly wherein with its nozzle outer contour shape, nozzle is fixed in the orientation of the restriction relative to coupling sleeve, and be fitted to ordinatedly wherein from second longitudinal switch valve that brings out of coupling sleeve with its valve outer contour shape, switch valve is fixed in the orientation of the restriction relative to coupling sleeve.
In other words, valve outer contour shape is matched with sleeve Internal periphery ordinatedly, thus provide the first axle-hub of form fit to connect as calibrating device (Ausrichtmittel), and nozzle outer contour shape is matched with sleeve Internal periphery ordinatedly, thus the second axle-hub of form fit is provided to connect as calibrating device.Correspondingly, valve external frame becomes complementary relative to sleeve Internal periphery with nozzle external frame relative configurations.
The axial engagement (Zusammenhalt) of all parts of fuel injector is such as guaranteed by the locking nut of the one or more corresponding collar (Ringbund) and outside thread place that act on parts as in the prior art usually.
By the adaptation according to form fit of the present invention of nozzle external frame and valve external frame and sleeve Internal periphery, the parts of fuel injector are with simple especially and the mode of easy care carrys out orientation to each other.
If the parts of fuel injector should be disassembled and reprocess if desired, only must connect to unclamp axle-hub via extracting all parts from coupling sleeve simply after unclamping axial engagement.Do not need in order to the reprocessing of sealing surface is to remove fitting pin.
With the axle realized via polygonal profile-hub connect obviously more insensitive according to fuel injector relative mechanical load of the present invention, thus assemble and dismounting time there is the danger that less calibrating device damages.
In addition, by aforesaid component embodiment, such as utilize (multiple) locking nut transmission obviously larger starting torque be possible, this jet pressure in view of lasting rising and more and more need to obtain enough tightnesses.
Preferably, coupling sleeve size is set to or is configured so that the most weak part of its forming member.Therefore, when mechanical overload, only coupling sleeve is destroyed or damage, make also only must in a straightforward manner and need not various instrument to change it.
According to a form of implementation of the present invention, sleeve Internal periphery can it with the longitudinal direction end intercept place of nozzle external frame adaptation have be different from it with the internal diameter at the longitudinal direction end intercept place of valve external frame adaptation.This design proposal of the present invention has this advantage, and namely parts jet blower and switch valve can consider that the situation of special case is divided into sizing and is however fitted in common coupling sleeve.
According to another form of implementation of the present invention, be fitted in sleeve Internal periphery to nozzle external frame and valve external frame form fit like this, make jet blower corresponding with switch valve in view of its longitudinal axis and its rotational position limit ground relative to coupling sleeve (its coupling sleeve of especially feeling relieved) and carry out orientation.
In other words, the longitudinal axis of jet blower and switch valve is connected longitudinal axis relative to coupling sleeve by axle-hub and therefore to each other and therefore this external its comes orientation or centering to each other accordingly in the rotational position of longitudinal axis.
According to another form of implementation of the present invention, sleeve Internal periphery has polygonal shape.Such polygonal shape (as its so can therefore in a complementary fashion also nozzle external frame place and provide at valve profile place or existing) such as by non-circular turning or non-circular grinding or manufactured by milling.
Preferably, this polygonal shape at least triangle (such as with the uniform thickness form P3G according to DIN32711) and especially hexagonal or heptangle ground construct.
According to a form of implementation of the present invention, sleeve Internal periphery constructs symmetrically about the longitudinal axis of coupling sleeve.
In this case, preferably between sleeve Internal periphery and nozzle external frame, be provided with the first projection-mating recesses, it limits the unique possible rotation orientation of jet blower relative to coupling sleeve, and between sleeve Internal periphery and valve external frame, being provided with the second projection-mating recesses, it limits the unique possible rotation orientation of switch valve relative to coupling sleeve.
In like fashion at jet blower, clear and definite rotation location is provided between switch valve and coupling sleeve.
According to an alternative form of implementation of the present invention, sleeve Internal periphery asymmetricly constructs about the longitudinal axis of coupling sleeve.
In this case, the polygonal shape with multiple side preferably has at least one side of the length with other side being different from polygonal shape.Also more preferably, this polygonal shape has with the first side of the length of other side being less than polygonal shape with second side of length of other side being greater than polygonal shape.
In like fashion at jet blower, clear and definite rotation location is also provided between switch valve and coupling sleeve here.
According to another form of implementation of the present invention, be fitted to throttling of fuel portion (Kraftstoffdrossel) form fit in the sleeve Internal periphery between jet blower and switch valve.In other words, restriction outer contour shape is matched with sleeve Internal periphery ordinatedly or constructs with being complementary to sleeve Internal periphery, thus provides the three axle-hub of form fit to connect.
Projection-mating recesses can be provided with at it relative to when longitudinal axis symmetric construction between restriction external frame and sleeve Internal periphery.When sleeve Internal periphery is relative to longitudinal axis non-symmetrical configuration, restriction external frame only complementally need construct relative to it simply.
Therefore, the clear and definite rotation location of other parts relative to fuel injector is also obtained about throttling of fuel portion.
Preferably, the cooperation of all axles-hub connection or form fit is embodied as slight Spielpassung or is transition fit.
According to the present invention, also provide with good grounds one of the present invention of band, multiple or all forms of implementation illustrated before with the internal-combustion engine of the fuel injector of the combination can considered arbitrarily, especially marine diesel engine.
Conclusion is, form of implementation according to the present invention provides jet blower and the centering of throttling of fuel portion at the switch valve place of the fuel injector with switch valve if desired and clear and definite location (orientation that is limited), wherein, this orientation has been come by means of polygonal profile.
Because centering sleeve or coupling sleeve are as at the jet blower of the fuel injector with switch valve, switch valve and link if desired between throttling of fuel portion, fitting pin becomes unnecessary.Thus, the quantity of orientation being added to required part is reduced to one from four.
Fitting pin is dismantling or fractureing or cutting off the repairing of complexity causing switch valve or jet blower when taking out the fitting pin damaged in assembling during mechanical overload.When coupling sleeve mechanical overload, and instrument that need not be other to change be possible.
Be embodied as with the axisymmetric geometrical construction (such as fitting pin and affiliated fitting pin recess are transverse to the layout of the longitudinal direction of coupling sleeve) of projection-mating recesses or for asymmetrical geometrical construction by polygonal profile, clear and definite location or the orientation of jet blower, throttling of fuel portion and switch valve are possible.
The fitting pin of prior art is often shown as overload in practice.When jet blower is measure-alike, connects via polygonal and can transmit than via the higher moment of torsion of fitting pin used in the prior art so far.
Jet blower is connected (such as axle-hub connect polygonal profile P3G (DIN32711)) realization with the orientation (preferably including centering) of switch valve by means of polygonal axle-hub relative to throttling of fuel portion.By at least radius at least two angles place of the polygonal profile of triangle slightly different amendments or by providing the mistake assembling can getting rid of carelessness with the axisymmetric profile of centring pin or asymmetrical profile (such as with the hexagon of at least one side L-Y shortened and side L+X (preferably X=Y) that at least one extends), it rotates 120 degree by the longitudinal axis such as around the parts of fuel injector will be possible.Therefore may leave out with the fitting pin of its original form.
Accompanying drawing explanation
The present invention extends on such mode of execution clearly, and it does not draw the Feature Combination formed provide by being returned by claim clear and definite, if therefore disclosed feature of the present invention this meaningfully technically can at random mutually to combine.
Below according to preferred form of implementation and when with reference to accompanying drawing the present invention is described.
Fig. 1 shows the decomposition view of the perspectivity of the fuel injector according to a form of implementation of the present invention.
Fig. 2 shows the view of the perspectivity of the coupling sleeve of the fuel injector according to another form of implementation of the present invention.
Fig. 3 shows viewgraph of cross-section or the front view of the coupling sleeve of Fig. 2.
Fig. 4 shows the longitudinal section view observing the coupling sleeve of Fig. 2 along the straight line A-A in Fig. 3.
List of numerals
1 fuel injector
1a fuel injector
10 jet blowers
11 longitudinally hold intercept
12 nozzle external frames
13 collars
20 switch valves
21 longitudinally hold intercept
22 valve external frames
30 coupling sleeves
30a coupling sleeve
31 longitudinally hold
31.1 longitudinally hold intercept
31.1a longitudinally holds intercept
32 longitudinally hold
32.1 longitudinally hold intercept
32.1a longitudinally holds intercept
33 sleeve Internal periphery
33a sleeve Internal periphery
40 throttling of fuel portions
41 restriction external frames
L1, L2 longitudinal axis
L3, L4 longitudinal axis
L length dimension
X, Y length dimension
S, S ', S ' ' side
E angle.
Embodiment
Fig. 1 shows the decomposition view of the perspectivity of the fuel injector 1 according to the first form of implementation structure according to the present invention of the internal-combustion engine (not complete illustrate) being configured to marine diesel engine herein.
Fuel injector 1 has for the jet blower 10 of burner oil (herein diesel oil), for controlling switch valve 20 and the coupling sleeve be arranged between jet blower 10 and switch valve 20 of the injection of (permission/locking) fuel or sleeve 30 of feeling relieved.
Jet blower 10 has predetermined nozzle external frame 12 at its longitudinal direction end intercept 11 place in the face of coupling sleeve 30, and switch valve 20 has predetermined valve external frame 22 at its longitudinal direction end intercept 21 place in the face of coupling sleeve 30.
Coupling sleeve 30 has predetermined sleeve Internal periphery 33 in it, longitudinally hold 31s jet blower 10 to be fitted to wherein with its nozzle external frame 12 form fit from first of coupling sleeve 30, jet blower 10 is fixed in the orientation of the restriction relative to coupling sleeve 30.
In addition, longitudinally hold 32s switch valve 20 to be fitted in sleeve Internal periphery 33 with its valve external frame 22 form fit from second of coupling sleeve 30, switch valve 20 is fixed in the orientation of the restriction relative to coupling sleeve 30.
In other words, be matched with sleeve Internal periphery 33 to valve external frame 22 form fit, thus provide the first axle of form fit-hub to connect as calibrating device, and nozzle external frame 12 form fit ground is matched with sleeve Internal periphery 33, thus provide the second axle-hub connection of form fit as calibrating device.
Correspondingly, valve external frame 12 is corresponding with nozzle external frame 22 complementally constructs with sleeve Internal periphery 33.
Additionally, throttling of fuel portion 40 is fitted to form fit in the sleeve Internal periphery 33 between jet blower 10 and switch valve 20 regularly with the orientation of the restriction relative to coupling sleeve 30.
In other words, the restriction external frame 41 in throttling of fuel portion 40 is matched with sleeve Internal periphery 33 or is complementary to sleeve Internal periphery 33 with being configured to form fit, thus provides the three axle-hub of form fit to connect as calibrating device.
Preferably, the cooperation of all axles-hub connection or form fit is embodied as slight Spielpassung or is transition fit.
As seen from Figure 1, jet blower 10 has longitudinal axis L 1, and switch valve 20 has longitudinal axis L 2, and coupling sleeve 30 has longitudinal axis L 3 and throttling of fuel portion 40 has longitudinal axis L 4.
According to the present invention, nozzle external frame 12, valve external frame 22 and restriction external frame 41 are so fitted in sleeve Internal periphery 33 to form fit, make jet blower 10, switch valve 20 corresponding with throttling of fuel portion 40 in view of its longitudinal axis L 1, L2 or L4 and its rotational position around corresponding longitudinal axis L 1, L2 or L4 carry out orientation with limiting relative to coupling sleeve 30.In other words, the longitudinal axis L 1 in jet blower 10, switch valve 20 and throttling of fuel portion 40, L2 or L4 are connected longitudinal axis L 3 relative to coupling sleeve 30 by axle-hub and therefore to each other and therefore this external its comes orientation or centering to each other in the corresponding rotational position of longitudinal axis L 1, L2 or L4.
In order to realize this orientation, valve external frame 12, nozzle external frame 22 be corresponding with restriction external frame 41 has polygonal shape and sleeve Internal periphery 33 has relative to the complementary polygonal shape of these external frames (valve external frame 12, nozzle external frame 22 and restriction external frame 41).Polygonal shape that is inner and outside is such as by non-circular turning or non-circular grinding or also manufactured by milling.
According to the present invention, the corresponding polygonal shape of the parts of fuel injector 1 at least Triangle and constructing according to Fig. 1 especially heptangle.
The joint of the axis (in the vertical) of all parts of fuel injector 1 is such as guaranteed by one or more locking nut (not shown) as in the prior art usually, and locking nut acts on outside thread (not shown) and the corresponding collar (collar 13 of the such as jet blower 10) place of parts.
Although so do not illustrate in FIG, according to a form of implementation sleeve Internal periphery 33 of the present invention can it with longitudinal direction end intercept 31.1 place of nozzle external frame 12 adaptation have be different from it with the internal diameter at longitudinal direction end intercept 32.1 place of valve external frame 22 adaptation.This design proposal of the present invention has especially can set size and the advantage be however fitted in common coupling sleeve 30 by parts (jet blower 10 and switch valve 20) when considering special case.
As seen from Figure 1, the corresponding polygonal shape (valve external frame 12, nozzle external frame 22, sleeve Internal periphery 33 and restriction external frame 41) of the parts of fuel injector 1 is corresponding asymmetricly to be constructed about its longitudinal axis L 1, L2, L3 or L4, to guarantee in jet blower 10, switch valve 20, clear and definite rotation location between throttling of fuel portion 40 and coupling sleeve 30.In other words, the parts of fuel injector 1 are corresponding only can insert in coupling sleeve 30 in unique rotational position limited in advance.
In detail, each polygonal shape has multiple side S, S ', S ' ' be connected their angle E and at least one has side S ', the S ' ' (in FIG three sides) of the length of other side S being different from this polygonal shape.
According to Fig. 1, each polygonal shape has three side S ', S ' ' of the length with other side S being less than polygonal shape, wherein, these side S ' ' be configured with in side S ', the S ' ' of smaller length have the length that these that be less than this polygonal shape are configured with the another side S ' in side S ', the S ' ' of smaller length.
Fig. 2 to 4 shows the view of the coupling sleeve 30a according to the second form of implementation structure according to the present invention of the fuel injector 1a (not complete illustrate) of the internal-combustion engine (not complete illustrate) being configured to marine diesel engine.
Construct according to the fuel injector 1a of the second form of implementation of the present invention is identical with the fuel injector 1 of the first form of implementation according to the present invention except some differences.Therefore below only point out that these are distinguished, wherein, represent with same or similar reference character with same or similar parts in FIG, and wherein, after the reference character of the parts of amendment, be equipped with lowercase " a ".As from Fig. 2-4, the corresponding polygonal shape of the parts of fuel injector 1a at least Triangle and herein especially constructing to hexagonal.
The corresponding polygonal shape (valve external frame, nozzle external frame, sleeve Internal periphery 33a and restriction external frame) of the parts of fuel injector 1a asymmetricly constructs about its longitudinal axis is corresponding again, to guarantee in jet blower, switch valve, clear and definite rotation location between throttling of fuel portion and coupling sleeve 30a.Therefore, the parts of fuel injector 1a are corresponding only can insert in coupling sleeve 30 in unique rotation limited in advance location.In detail, each polygonal shape of the parts of fuel injector 1a has multiple side S, S ', S ' ' be connected they angle E and with at least one side S ', the S ' ' (in Fig. 2-4 two sides) of length of other side S being different from this polygonal shape.
According to Fig. 2-4, each polygonal shape of the parts of fuel injector 1a has the first side S of the length (L-Y) with other side S being less than this polygonal shape " and with being greater than the second side S ' of length (L+X) of other side S (with length dimension L) of this polygonal shape.Preferably, length dimension X equals length dimension Y.
According to the unshowned in the accompanying drawings modification of the first and second forms of implementation of the present invention, corresponding polygonal shape (valve external frame, nozzle external frame, sleeve Internal periphery and restriction external frame) can construct symmetrically about its longitudinal axis.
In this case, be provided with the first projection-mating recesses between sleeve Internal periphery and nozzle external frame, it limits the unique possible rotation orientation of jet blower relative to coupling sleeve.In addition, be provided with the second projection-mating recesses between sleeve Internal periphery and valve external frame, it limits the unique possible rotation orientation of switch valve relative to coupling sleeve.Finally, so between restriction external frame and sleeve Internal periphery, be also provided with projection-mating recesses, it limits the unique possible rotation orientation of throttling of fuel portion relative to coupling sleeve.
Each projection-mating recesses such as can construct with the form extending to the fitting pin recess in corresponding external frame and radially-inwardly join the fitting pin fitting pin recess transverse to longitudinal axis from sleeve Internal periphery to assembly with stretching out transverse to the longitudinal axis in (jet blower, switch valve or throttling of fuel portion) according to the degree of depth.Preferably, fitting pin recess has unlimited end in the longitudinal direction of corresponding parts, and fitting pin can be inserted in corresponding fitting pin recess via it when parts insert coupling sleeve.
Claims (8)
1. a fuel injector (1, 1a), it is with the jet blower (10) for burner oil, for the switch valve (20) that controls the injection of fuel and the coupling sleeve (30) be arranged between described jet blower (10) and described switch valve (20), wherein, described jet blower (10) has predetermined nozzle external frame (12) at its longitudinal direction end intercept (11) place and described switch valve (20) has predetermined valve external frame (22) at its longitudinal direction end intercept (21) place, and wherein, described coupling sleeve (30, 30a) there is predetermined sleeve Internal periphery (33, 33a), from first of described coupling sleeve (30,30a) longitudinally end (31) the described jet blower (10) that sets out be fitted to described sleeve Internal periphery (33 with its nozzle external frame (12) form fit, 33a), make described jet blower (10) relative to described coupling sleeve (30, the orientation of restriction 30a) fixes, and from second of described coupling sleeve (30,30a) longitudinally end (32) the described switch valve (20) that sets out be fitted to described sleeve Internal periphery (33 with its valve external frame (22) form fit, 33a), described switch valve (20) is fixed in the orientation of the restriction relative to described coupling sleeve (30,30a), wherein, described sleeve Internal periphery (33, 33a) there is polygonal shape, wherein, described sleeve Internal periphery (33, 33a) about described coupling sleeve (30, longitudinal axis (L3) 30a) asymmetricly constructs, and wherein, described polygonal shape has multiple side (S, S ', S ' ') and with at least one side (S ', S ' ') of length of other side (S) being different from described polygonal shape.
2. fuel injector (1 according to claim 1; 1a), wherein, described nozzle external frame (12) and described valve external frame (22) are so fitted to described sleeve Internal periphery (33 to form fit; 33a), make described jet blower (10) corresponding with described switch valve (20) in view of its longitudinal axis (L1, L2) and rotational position thereof carry out orientation with limiting relative to described coupling sleeve (30,30a).
3. fuel injector (1 according to claim 1; 1a), wherein, described polygonal shape at least constructs Triangle.
4. fuel injector (1 according to claim 1; 1a), wherein, described polygonal shape hexagonal or heptangle ground construct.
5. the fuel injector (1 according to claim 3 or 4; 1a), wherein, described sleeve Internal periphery (33; Longitudinal axis (L3) 33a) about described coupling sleeve (30,30a) constructs symmetrically.
6. fuel injector (1 according to claim 5; 1a), wherein, at described sleeve Internal periphery (33; 33a) and between described nozzle external frame (12) be provided with the first projection-mating recesses, it limits described jet blower (10) relative to described coupling sleeve (30; Unique possible rotation orientation 30a), and wherein, at described sleeve Internal periphery (33; 33a) and between described valve external frame (22) be provided with the second projection-mating recesses, it limits described switch valve (20) relative to described coupling sleeve (30; Unique possible rotation orientation 30a).
7. fuel injector according to claim 1 (1a), wherein, described polygonal shape have the length with other side (S) being less than described polygonal shape the first side (S ' ') and with second side (S ') of length of other side (S) being greater than described polygonal shape.
8. fuel injector (1 according to any one of claim 1 to 4; 1a), it is characterized in that, throttling of fuel portion (40) are fitted to described sleeve Internal periphery (33 to form fit between jet blower (10) and switch valve (20); 33a).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012203621A DE102012203621A1 (en) | 2012-03-07 | 2012-03-07 | fuel injector |
| DE102012203621.0 | 2012-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103306876A CN103306876A (en) | 2013-09-18 |
| CN103306876B true CN103306876B (en) | 2016-03-30 |
Family
ID=47915145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310072666.3A Active CN103306876B (en) | 2012-03-07 | 2013-03-07 | Fuel injector |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP6068516B2 (en) |
| KR (1) | KR101941714B1 (en) |
| CN (1) | CN103306876B (en) |
| DE (1) | DE102012203621A1 (en) |
| FI (1) | FI126732B (en) |
| WO (1) | WO2013131652A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2572012A (en) * | 2018-03-16 | 2019-09-18 | Delphi Tech Ip Ltd | Handling tool |
| US20230407829A1 (en) * | 2022-06-21 | 2023-12-21 | Cummins Inc. | Devices, systems, and methods for orienting fuel injector nozzle spray holes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7438055B1 (en) * | 2007-07-11 | 2008-10-21 | Delphi Technologies, Inc | Fuel injector to fuel rail connection |
| EP2080892A1 (en) * | 2008-01-16 | 2009-07-22 | Delphi Technologies, Inc. | Fuel injector |
| DE102010039980A1 (en) * | 2010-08-31 | 2012-03-01 | Man Diesel & Turbo Se | Centering device for a fuel injector |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8716056U1 (en) * | 1987-12-04 | 1989-03-30 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection pump for internal combustion engines |
| JP2963577B2 (en) * | 1992-04-23 | 1999-10-18 | 日本特殊陶業株式会社 | Method for producing joined body of ceramic member and metal member |
| GB9515604D0 (en) * | 1995-07-29 | 1995-09-27 | Lucas Ind Plc | Injector |
| KR100240841B1 (en) * | 1997-08-14 | 2000-01-15 | 박상록 | Jet nozzle for diesel engine having variable jet hall |
| DE19914714C2 (en) * | 1999-03-31 | 2001-09-20 | Siemens Ag | Injector for storage fuel injection systems |
| JP2004521244A (en) * | 2001-06-13 | 2004-07-15 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Fuel injection valve for internal combustion engine |
| DE10333786A1 (en) * | 2003-07-24 | 2005-02-24 | Siemens Ag | Fuel injection valve with combustion chamber sealing for internal combustion engine has two complementary circular wedge profiles for connecting nozzle shaft, sealing disk brought into frictional engagement by rotation |
| JP2005299641A (en) * | 2004-03-19 | 2005-10-27 | Denso Corp | Fuel injection nozzle |
| JP2006233866A (en) * | 2005-02-24 | 2006-09-07 | Denso Corp | Common rail |
| US7472844B2 (en) * | 2005-12-21 | 2009-01-06 | Caterpillar Inc. | Fuel injector nozzle with tip alignment apparatus |
| JP2009275597A (en) * | 2008-05-14 | 2009-11-26 | Yanmar Co Ltd | Common rail injector |
-
2012
- 2012-03-07 DE DE102012203621A patent/DE102012203621A1/en active Pending
-
2013
- 2013-03-05 FI FI20135208A patent/FI126732B/en active IP Right Grant
- 2013-03-06 KR KR1020130023729A patent/KR101941714B1/en active IP Right Grant
- 2013-03-07 JP JP2014560277A patent/JP6068516B2/en active Active
- 2013-03-07 WO PCT/EP2013/000677 patent/WO2013131652A1/en active Application Filing
- 2013-03-07 CN CN201310072666.3A patent/CN103306876B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7438055B1 (en) * | 2007-07-11 | 2008-10-21 | Delphi Technologies, Inc | Fuel injector to fuel rail connection |
| EP2080892A1 (en) * | 2008-01-16 | 2009-07-22 | Delphi Technologies, Inc. | Fuel injector |
| DE102010039980A1 (en) * | 2010-08-31 | 2012-03-01 | Man Diesel & Turbo Se | Centering device for a fuel injector |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130102489A (en) | 2013-09-17 |
| CN103306876A (en) | 2013-09-18 |
| JP2015509568A (en) | 2015-03-30 |
| WO2013131652A1 (en) | 2013-09-12 |
| FI20135208A (en) | 2013-09-08 |
| DE102012203621A1 (en) | 2013-09-12 |
| FI126732B (en) | 2017-04-28 |
| KR101941714B1 (en) | 2019-01-23 |
| JP6068516B2 (en) | 2017-01-25 |
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