CN104234896B - Conveying pipe - Google Patents
Conveying pipe Download PDFInfo
- Publication number
- CN104234896B CN104234896B CN201410256846.1A CN201410256846A CN104234896B CN 104234896 B CN104234896 B CN 104234896B CN 201410256846 A CN201410256846 A CN 201410256846A CN 104234896 B CN104234896 B CN 104234896B
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- Prior art keywords
- mentioned
- projection
- tubular adapter
- conveying pipe
- tubular
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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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
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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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
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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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
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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
- F02M2200/852—Mounting of fuel injection apparatus provisions for mounting the fuel injection apparatus in a certain orientation, e.g. markings or notches
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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
- F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
-
- 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
- F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
-
- 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
- F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
-
- 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
- F02M2200/857—Mounting of fuel injection apparatus characterised by mounting fuel or common rail to engine
Abstract
A kind of conveying pipe, can improve the workability of the manufacturing operation of conveying pipe, Fuelinjection nozzle can be positioned in the direction of rotation of this central shaft desired position.The projection (16) of tubular adapter (10) has the circular arc (16A) external with tubular adapter (10) and the end points (21 from circular arc (16A), 22) a pair hypotenuse (16B extended point-blank to cross one another direction, 16C), projection (16) is configured to, will by the central shaft (23) of tubular adapter (10) and at the side upwardly extending straight line orthogonal with bank of cylinder direction as datum line (24), making circular arc (16A) on the basis of this datum line (24) is asymmetric relative to datum line (24).Hypotenuse (16B, 16C) is arranged in the region between the end points (21,22) by circular arc (16A) 2 imaginary lines (26,27) parallel with datum line (24).
Description
Technical field
The present invention relates to conveying pipe, particularly relate to be equipped on the conveying pipe with tubular support of vehicle, tubular support has the projection preventing Fuelinjection nozzle from rotating.
Background technology
In the past, the internal combustion engine being equipped on vehicle is equipped with conveying pipe with the direction identical with bank of cylinder direction near cylinder head, this conveying pipe is equipped with the Fuelinjection nozzle to each cylinder injection fuel, this Fuelinjection nozzle and the tubular connector linking being located at the main part carrying pipe.
But, when using the Fuelinjection nozzle of porous type etc., when the position of rotation (direction) of the central shaft around Fuelinjection nozzle is different, can change to the fuel-injection condition of air inlet or combustor, the most sometimes fired states such as discharging the composition of gas, fuel efficiency is adversely affected, therefore, when Fuelinjection nozzle is assembled to carry pipe, need to be adjusted the direction so that Fuelinjection nozzle towards desired direction by each cylinder.
It is thus possible, for instance as patent documentation 1 is recorded, the tubular adapter at the main part being welded in conveying pipe is formed with the square projection as location division, by making the direction of Fuelinjection nozzle be positioned at desired direction this projection intercalating dye injection valve.
On the other hand, in the case of the main part that multiple tubular connector devices are assigned in conveying pipe, after utilizing fixture that multiple tubular adapters are temporarily fixed on the main part of conveying pipe, it is welded in main part.Specifically, as shown in figure 16, when the projection 52 of the peripheral part by being located at each tubular adapter 51 embeds the recess 53a of fixture 53, tubular adapter 51 is held in fixture 53, after tubular adapter 51 is temporarily fixed on the main part 54 of conveying pipe in this condition, utilize bonding machine that tubular adapter 51 is welded in the main part 54 of conveying pipe.
Prior art literature
Patent documentation
Patent documentation 1: JP 2003-120466 publication
Summary of the invention
The problem that invention is to be solved
But, according to this existing conveying pipe, the projection 52 of tubular adapter 51 is square, therefore in the case of the direction of the unfixing i.e. projection 52 of tubular adapter 51 in the direction of each Fuelinjection nozzle is not towards equidirectional, after tubular adapter 51 is welded in main part 54, by fixture 53 when tubular adapter 51 is pulled down, projection 52 can catch on the recess 53a of fixture 53, it is impossible to pulls down fixture 53 from tubular adapter 51.
Therefore, utilize multiple fixture to keep tubular adapter 51, or as shown in figure 17, need the position of the fixture 53 between tubular adapter 51 that multiple insert 55 independent with fixture 53 is set, before pulling down fixture 53, pull down insert 55 from fixture 53 as shown by arrows.Therefore, the composition of fixture 53 becomes complicated, causes the manufacture carrying pipe to become trouble, the problem that the workability of the manufacturing operation that there is conveying pipe deteriorates.
The present invention pays close attention to the problems referred to above and completes, it is therefore intended that provides one conveying pipe, can improve the workability of the manufacturing operation of conveying pipe, and Fuelinjection nozzle is being positioned in the direction of rotation of this central shaft desired position.
For solving the scheme of problem
1st mode of the present invention is a kind of conveying pipe, including: main part, it upwardly extends in the bank of cylinder side of internal combustion engine；Multiple tubular adapters, it is located at main part along bank of cylinder direction, links with the multiple Fuelinjection nozzles being formed with the 1st projection at peripheral part；nullAnd the 2nd projection，It is formed at the peripheral part of tubular adapter，By having the fixture of the recess with the 2nd protrusions snap，After tubular adapter is temporarily fixed on main part，Tubular adapter and main part are welded，1st projection and the 2nd projection are engaged by holding section，By having the rotationally constrained component of above-mentioned holding section，Fuelinjection nozzle is connected to tubular adapter，The central shaft making above-mentioned Fuelinjection nozzle be not about above-mentioned tubular adapter rotates，Conveying pipe is characterised by，A pair hypotenuse that 2nd projection has a circular arc external with tubular adapter and the end points from circular arc extends on cross one another direction point-blank，2nd projection is configured to，Using the central shaft by tubular adapter and at the side upwardly extending straight line orthogonal with bank of cylinder direction as datum line，Making above-mentioned circular arc on the basis of this datum line is asymmetric relative to datum line，And，The hypotenuse of the 2nd projection is arranged in by the region between each end points of circular arc 2 articles of imaginary lines parallel with datum line.
The 2nd mode as the present invention, it is also possible to be provided with 2 tubular adapters at same cylinder, at least 1 the tubular adapter adjacent relative to benchmark alignment being located in the 2nd projection of same cylinder rolls tiltedly.
As the 3rd mode of the present invention, the 1st projection can also be formed as hypotenuse with respect to symmetrical subtriangular or trapezoidal of the imaginary line of the central shaft of tubular adapter and the point of bisection of circular arc.
Invention effect
So, according to above-mentioned 1st mode, a pair hypotenuse that 2nd projection of tubular adapter has a circular arc external with tubular adapter and the end points from circular arc extends on cross one another direction point-blank, 2nd projection is configured to, using the central shaft by tubular adapter and at the side upwardly extending straight line orthogonal with bank of cylinder direction as datum line, making above-mentioned circular arc on the basis of this datum line is asymmetric relative to datum line, 1st projection and the 2nd projection are engaged by holding section, by having the rotationally constrained component of holding section, Fuelinjection nozzle is connected to tubular adapter.Accordingly, it is capable to Fuelinjection nozzle to be positioned in the direction of rotation of this central shaft desired position.
Additionally, the hypotenuse of the 2nd projection of tubular adapter is arranged in by the region between each end points of circular arc 2 articles of imaginary lines parallel with datum line, therefore can prevent when relative to the handling of tubular adapter for the fixture that tubular adapter is temporarily fixed on main part, the 2nd projection catches on the recess of fixture.
Therefore, the fixture of complicated composition, multiple fixture need not be used as in the past to be easy to tubular adapter is welded in main part, the workability of the manufacturing operation of conveying pipe can be improved.
According to above-mentioned 2nd mode, it is configured to 2 tubular adapters and is located at same cylinder, at least 1 the tubular adapter adjacent relative to benchmark alignment being located in the 2nd projection of same cylinder rolls tiltedly, therefore, at tubular adapter in the case of bank of cylinder direction is assemblied in main part at short intervals, need to utilize fixture to be temporarily fixed on main part multiple tubular adapters.
In this case, also Fuelinjection nozzle can be positioned around the position desired by the direction of rotation of this central shaft, and the fixture of complicated composition, multiple fixture need not be used as in the past to be easy to tubular adapter is welded in main part, the workability of the manufacturing operation of conveying pipe can be improved.
According to above-mentioned 3rd mode, 2nd projection is formed as hypotenuse with respect to the symmetrical triangle of the imaginary line of the central shaft of tubular adapter and the point of bisection of circular arc or trapezoidal, therefore in the case of making the 2nd projection be positioned at the either direction of a side of circumferencial direction or the opposing party of circumferencial direction relative to datum line, when relative to the handling of tubular adapter for tubular adapter is temporarily fixed on the fixture of main part, can prevent the 2nd projection from catching on the recess of fixture.
Therefore, the fixture of complicated composition, multiple fixture need not be used as in the past also easily tubular adapter to be welded in main part, can effectively further improve the workability of the manufacturing operation of conveying pipe.
Accompanying drawing explanation
Fig. 1 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the left side front view of the internal combustion engine possessing conveying pipe.
Fig. 2 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the outside drawing of cylinder head and the inlet manifold seen from rear side.
Fig. 3 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the longitudinal section of cylinder head and inlet manifold.
Fig. 4 is the figure of an embodiment of the conveying pipe illustrating the present invention, is conveying pipe and the front view of Fuelinjection nozzle.
Fig. 5 is the figure of an embodiment of the conveying pipe illustrating the present invention, is conveying pipe and the exploded perspective view of Fuelinjection nozzle.
Fig. 6 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the figure representing the state that Fuelinjection nozzle is assemblied in conveying pipe.
Fig. 7 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the figure representing the state that Fuelinjection nozzle is assemblied in conveying pipe.
Fig. 8 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the outside drawing of clip.
Fig. 9 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the outside drawing of the clip seen from the direction different from Fig. 8.
Figure 10 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the upward view of conveying pipe.
Figure 11 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the figure representing and utilizing state that cylinder adapter is temporarily fixed on main part by fixture.
Figure 12 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the figure representing the cylinder adapter with other projection constituted.
Figure 13 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the figure representing the cylinder adapter with other projection constituted.
Figure 14 is the figure of an embodiment of the conveying pipe illustrating the present invention, is the figure representing the state that Fuelinjection nozzle is assemblied in other conveying pipe constituted.
Figure 15 is the figure of an embodiment of the conveying pipe illustrating the present invention, is to represent to carry pipe and utilize fixture that cylinder adapter is temporarily fixed on the figure of state of main part having other composition.
Figure 16 is the figure of the prior art of the conveying pipe illustrating the present invention, represents that utilization is the figure that existing cylinder adapter is temporarily fixed on the state of main part by fixture.
Figure 17 is the figure of prior art of the conveying pipe illustrating the present invention, is the figure representing and utilizing state that existing cylinder adapter is temporarily fixed on main part by other fixture.
Description of reference numerals
8: conveying pipe；9: main part；10: tubular adapter；11: Fuelinjection nozzle；13: clip (rotationally constrained component)；13d: holding section；15: projection (the 1st projection)；16,41,42: projection (the 2nd projection)；16A, 41A, 42A: circular arc；16B, 16C, 41B, 41C, 42B, 42C: hypotenuse；21,22: end points；23: central shaft；24: datum line；25,26: imaginary line；31: fixture；31b: recess.
Detailed description of the invention
Hereinafter, the embodiment of the conveying pipe of the accompanying drawing explanation present invention is utilized.
Fig. 1～Figure 15 is the figure of the conveying pipe illustrating an embodiment of the invention.
First illustrate to constitute.In Fig. 1～Fig. 3, there is as the electromotor 1 of internal combustion engine the cylinder being built-in with not shown piston, possess: integrally provided with the cylinder block 2 of the crankcase 3 supporting bent axle 6 rotatably；It is located at the oil sump 4 of the bottom of cylinder block 2；And it is located at the cylinder head 5 on the top of cylinder block 2.
Being equipped with inlet manifold 7 in cylinder head 5, the air sucked from not shown air inlet pipe is distributed to each cylinder by the air inlet 5a of cylinder head 5 and is imported by inlet manifold 7.Additionally, the inlet manifold 7 of present embodiment is provided with 4 air intake branch 7a～7d, electromotor 1 constitutes 4 cylinder engines.It addition, be provided with not shown intake valve in cylinder head 5, this intake valve makes air inlet 5a opening and closing along with the rotation of not shown admission cam.
It addition, be provided with conveying pipe 8 in cylinder head 5, this conveying pipe 8 extends along the bank of cylinder direction of left and right directions in fig. 2, is configured to include: imported the main part 9 of fuel by fuel under high pressure pipe arrangement 8A；And tubular adapter 10, it is located at the bottom of main part 9, is connected with Fuelinjection nozzle 11.
Being provided with 2 tubular adapters 10 and Fuelinjection nozzle 11 by each cylinder, the electromotor 1 of present embodiment as shown in Figure 4, Figure 5, possesses 8 tubular adapters 10 and Fuelinjection nozzle 11.
At this, as shown in Figure 3, the side being located in 2 Fuelinjection nozzles 11 of same cylinder is located at the top of air inlet 5a, the opposing party in Fuelinjection nozzle 11 is located at the inboard (right side of the width of vehicle) in the paper direction of the air inlet 5a of diagram, is located at the top of the not shown air inlet adjacent with air inlet 5a.That is, the Fuelinjection nozzle 11 of present embodiment is respectively arranged at a pair air inlet arranged by each cylinder.
The most so Fuelinjection nozzle 11 is located at each air inlet 5a, mainly has following reason.
Spray in the electromotor 1 of fuel in air inlet, it is desirable to suppression fuel is attached to the inwall of air inlet 5a, and the spray-hole of Fuelinjection nozzle 11 from combustor more away from, then the ratio of the inwall being attached to air inlet 5a in the fuel ejected is the highest.
Having in the electromotor 1 of 2 intake valves at every 1 cylinder, air inlet 5a branches into 2, is therefore configured with 1 Fuelinjection nozzle 11 at the branch than air inlet 5a by upstream side.Therefore, the ratio of the fuel being attached to the inwall of air inlet 5a uprises.
And if Fuelinjection nozzle 11 is respectively arranged at 2 air inlet 5a of 1 cylinder, then Fuelinjection nozzle 11 be closely located to combustor, fuel can be suppressed to be attached to the inwall of air inlet 5a.
And, in the case of the state operating that the maximum lift of the side's intake valve in the intake valve making 2 air inlet 5a opening and closings is less than the maximum lift of the opposing party intake valve, make the fuel injection timing of 2 Fuelinjection nozzles 11, emitted dose different, it is thus possible to seek to improve fuel efficiency, promote burning etc..
Being provided with 2 bracket 9a at main part 9, insert bolt 14 to be formed in the bolt hole of this bracket 9a and bracket 9a is fixed on cylinder head 5, thus conveying pipe 8 is fixed in cylinder head 5.
Fuelinjection nozzle 11 is formed at the inside of Fuelinjection nozzle main body 11A, possesses: fuel passage, and it is connected with main part 9 by tubular adapter 10；Needle valve, it is built in Fuelinjection nozzle main body 11A, is located in fuel passage；And solenoid, it is built in Fuelinjection nozzle main body 11A, energising to needle valve is switched on and off controlling, needle valve is utilized to make the spray-hole being formed at the top of Fuelinjection nozzle 11 connect or non-interconnected with fuel passage, it is configured to utilize needle valve to make spray-hole and fuel passage for connected state, thus the combustor of cylinder is sprayed fuel.
It addition, be equipped with, in Fuelinjection nozzle main body 11A, the power connector 12 that the not shown power-feed connector with the top being located at not shown wire harness is connected.Power connector 12 is connected with the terminal of power-feed connector, and electrically connects with o, and o, when power connector 12 being transmitted the signal of telecommunication from power-feed connector, controls needle valve and makes spray-hole connect with fuel passage.
Additionally, peripheral part in the upper end of Fuelinjection nozzle main body 11A is provided with not shown o-ring, when Fuelinjection nozzle main body 11A is connected by the inside that Fuelinjection nozzle main body 11A is inserted tubular adapter 10 with tubular adapter 10, o-ring is utilized to close tubular adapter 10 to prevent from tubular adapter 10 spilled fuel.
It addition, shown in Fig. 4, Fig. 5, be provided with 3 bracket 9b at main part 9, the wire harness of power-feed connector is fixed in this bracket 9b.
As shown in Fig. 5～Fig. 7, being formed with flange part 10A in the bottom of tubular adapter 10, the peripheral part at this flange part 10A is formed with the projection 16 as the 2nd projection.It addition, the peripheral part on the top of Fuelinjection nozzle main body 11A is formed with projection 15, tubular adapter 10 and Fuelinjection nozzle 11 as the 1st projection and is connected by clip 13 in the way of the central axis direction of Fuelinjection nozzle 11 is overlapping by projection 15,16.
As shown in Figure 8, Figure 9, the clip 13 constituting rotationally constrained component possesses a pair clamping part 13b linked by connecting piece 13a, is respectively formed with, at clamping part 13b, the peristome 13c that the flange part 10A with tubular adapter 10 engages.It addition, be formed with the slot 13d as holding section between clamping part 13b, projection 15,16 can engage with this slot 13d.
Clamping part 13b is made to expand at this clip 13 in the separate mode of clamping part 13b, after making the projection 16 of tubular adapter 10 and the projection 15 of Fuelinjection nozzle 11 be sticked in slot 13d, the flange part 10A of tubular adapter 10 is inserted in peristome 13c, thus utilizes clamping part 13b to keep tubular adapter 10 and Fuelinjection nozzle 11.
Now, the flange part 10A of tubular adapter 10 inserts in peristome 13c, and the projection 15 of Fuelinjection nozzle 11 is connected to the upper surface of connecting piece 13a, thus to be positioned relative to the axis direction of tubular adapter 10 by Fuelinjection nozzle 11, prevent it from departing from from tubular adapter 10.
Additionally, projection 15,16 engages with slot 13d, thus by projection 15,16 to position in the way of the central axis direction of tubular adapter 10 is overlapping, and the circumferencial direction two ends of projection 15,16 are connected to slot 13d, therefore Fuelinjection nozzle 11 is connected to tubular adapter so that Fuelinjection nozzle 11 is not about the central shaft of tubular adapter 10 and rotates.
On the other hand, as shown in Figure 10, the projection 16 of the tubular adapter 10 of present embodiment has: the circular arc 16A external with tubular adapter 10；And a pair hypotenuse 16B, the 16C extended point-blank to cross one another direction from the end points 21,22 of circular arc 16A.
That is, the projection 16 of present embodiment is formed as hypotenuse 16B, 16C with respect to the central shaft 23 of tubular adapter 10 and the triangle of imaginary line 25 symmetry of the point of bisection of circular arc 16A.
It addition, projection 16 is configured to, using by the central shaft 23 of tubular adapter 10 and at the side upwardly extending straight line orthogonal with bank of cylinder direction as datum line 24, make circular arc 16A relative to datum line 24 for asymmetric on the basis of this datum line 24.Specifically, for asymmetric, so-called circular arc 16A refers to that above-mentioned imaginary line 25 does not overlaps with datum line 24 relative to datum line 24.In other words, refer to that imaginary line 25 overlaps with datum line 24 relative to datum line 24 symmetry.
It addition, hypotenuse 16B, 16C of projection 16 are arranged in the region between the end points 21,22 by circular arc 16A 2 imaginary lines 26,27 parallel with datum line 24.Roll tiltedly to adjacent tubular adapter 10 it addition, be located at 2 respective projections of tubular adapter 10 16 of same cylinder with equidirectional and relative to datum line 24.
Therefore, Fuelinjection nozzle 11 is located in and is assemblied in tubular adapter 10 around the position desired by the direction of rotation of this central shaft.
At this, why Fuelinjection nozzle 11 is positioned around the position desired by the direction of rotation of this central shaft, it is because in the case of the Fuelinjection nozzle 11 using porous type, when Fuelinjection nozzle 11 is when the position of rotation (direction) of central shaft is different, the fuel-injection condition of air inlet 5a or combustor can be changed, therefore can be to the composition discharging gas, the fired states such as fuel efficiency impact, and sometimes according to the direction of power connector 12, it is difficult to ensure that the space for power connector 12 being connected power-feed connector, arrange the space of wire harness.Therefore, the assembling of the main part 9 of conveying pipe 8 is needed to be adjusted by Fuelinjection nozzle 11 so that make the direction of Fuelinjection nozzle 11 towards desired direction by each cylinder.
According to this requirement, the direction being located at the projection 16 of same cylinder is set to equidirectional by the tubular adapter 10 of present embodiment, and is different directions by the direction setting being configured at the projection 16 of the most adjacent cylinder.
Next illustration.
As shown in figure 11, present embodiment carries pipe 8 utilizes fixture 31 that multiple tubular adapters 10 are assembled to be fixed on the operation of the main part 9 manufacturing device.
In fig. 11, fixture 31 has the shape identical with the peripheral shape of tubular adapter 10, bending section 31a that a part for the outer peripheral face possessing tubular adapter 10 is abutted and the recess 31b that projection 16 is engaged.In fig. 11, utilize fixture 31 to assemble 4 tubular adapters 10, but 1 fixture 31 can also be assembled 8 tubular adapters 10, it is also possible to 2 fixtures 31 are assembled respectively 4 tubular adapters 10.It addition, the position of this recess 31b is previously formed in the corresponding position, direction of the projection 16 with tubular adapter 10.It addition, although not shown, but it is formed with the mounting portion for loading tubular adapter 10 in the bottom of fixture 31 so that tubular adapter 10 will not fall from fixture 31.
Multiple tubular adapters 10 are being assembled in the operation of main part 9, projection 16 are being inserted recess 31b and the outer peripheral face of tubular adapter 10 is connected to bending section 31a multiple tubular adapters 10 are assembled to fixture 31.
Then, utilizing fixture 31 that tubular adapter 10 temporarily anchors to be fixed on the bottom of the main part 9 manufacturing device, the state the most fixing at this utilizes not shown bonding machine that tubular adapter 10 is welded to main part 9.Then, pulling down fixture 31 from tubular adapter 10, thus, the manufacturing operation of conveying pipe 8 terminates.Additionally, the recess 31b of the fixture 31 of present embodiment is formed as making a face 31c of the inner peripheral surface of recess 31b and the handling direction A of fixture 31 being equidirectional.
On the other hand, when Fuelinjection nozzle 11 is assembled to carry pipe 8, the top of Fuelinjection nozzle main body 11A is made to engage with tubular adapter 10.Then, utilize clip 13 fixed fuel injection valve 11 and tubular adapter 10, thus Fuelinjection nozzle 11 is fixed on the positioning on the central axis direction and direction of rotation of tubular adapter 10.Then, the top insertion of Fuelinjection nozzle 11 is formed at the valve opening of cylinder head 5 and utilizes bolt 4 that conveying pipe 8 is fixed on cylinder head 5.
As it has been described above, the projection 16 of the tubular adapter 10 of present embodiment has: the circular arc 16A external with tubular adapter 10；And from the end points 21 of circular arc 16A, the 22 a pair hypotenuse 16B extended point-blank to cross one another direction, 16C, projection 16 is configured to, using by the central shaft 23 of tubular adapter 10 and at the side upwardly extending straight line orthogonal with bank of cylinder direction as datum line 24, make circular arc 16A relative to datum line 24 for asymmetric on the basis of this datum line 24, projection 15, 16 are engaged by slot 13d, by having the clip 13 of slot 13d, Fuelinjection nozzle 11 is connected to tubular adapter 10, the central shaft making Fuelinjection nozzle 11 be not about tubular adapter 10 rotates.Accordingly, it is capable to Fuelinjection nozzle 11 is positioned around the position desired by the direction of rotation of this central shaft.
Additionally, in the projection 16 of tubular adapter 10, hypotenuse 16B, 16C of projection 16 is arranged in the region between the end points 21,22 by circular arc 16A 2 imaginary lines 26,27 parallel with datum line 24, therefore, when relative to tubular adapter 10 handling for tubular adapter 10 is temporarily fixed on the fixture 31 of main part 9, can prevent projection 16 from catching on the recess 31b of fixture 31.
Therefore, the fixture of complicated composition, multiple fixture need not be used as in the past to be easy to tubular adapter 10 is welded in main part 9, the workability of the manufacturing operation of conveying pipe 8 can be improved.
Additionally, same cylinder is located at by the tubular adapter 10 of 2 present embodiments, at least 1 be located in the projection 16 of same cylinder rolls tiltedly relative to datum line 24 to adjacent tubular adapter 10, therefore, in the case of at short intervals tubular adapter 10 being assemblied in main part 9 on bank of cylinder direction, need to utilize fixture 31 that multiple tubular adapters 10 are temporarily fixed on main part 9.In addition it is also possible to the projection 16 being configured to be located at same cylinder is respectively relative to datum line 24 and rolls tiltedly to adjacent tubular adapter 10.
So, same cylinder is located at by tubular adapter 10 2 present embodiments, at least 1 be located in the projection 16 of same cylinder relative to datum line 24 in the case of adjacent tubular adapter 10 rolls oblique composition, also can Fuelinjection nozzle 11 be positioned around the position desired by the direction of rotation of this central shaft, and when being loaded and unloaded relative to tubular adapter 10 by fixture 31, can prevent projection 16 from catching on the recess 31b of fixture 31.Accordingly, it is capable to easily tubular adapter 10 is welded in main part 9, the workability of the manufacturing operation of conveying pipe 8 can be improved.
It addition, in the projection 16 of the tubular adapter 10 of present embodiment, hypotenuse 16B, 16C are formed as with respect to the central shaft 23 of tubular adapter 10 and the triangle of imaginary line 25 symmetry of the point of bisection of circular arc 16A.Therefore, in the case of making projection 16 be located relative to the either direction that datum line 24 is in a side of circumferencial direction or the opposing party of circumferencial direction, can prevent projection 16 from catching on the recess 31b of fixture 31 in main part 9 when being loaded and unloaded relative to tubular adapter 10 by fixture 31.Accordingly, it is capable to easily tubular adapter 10 is welded in main part 9, the workability of the manufacturing operation of conveying pipe 8 can be improved.
Additionally, the projection 16 of present embodiment is formed as triangle, but can also as shown in figure 12, and projection 41 is formed as trapezoidal.Specifically, it is also possible to the projection 41 as the 2nd projection of the peripheral part that will be formed in tubular adapter 10 is formed as hypotenuse 41B, 41C imaginary line 25 symmetry trapezoidal with respect to the central shaft 23 of tubular adapter 10 and the point of bisection of circular arc 41A.
It addition, as shown in figure 13, projection 42 can also be formed as chevron.Specifically, it is also possible to the projection 42 as the 2nd projection of the peripheral part that will be formed in tubular adapter 10 is formed as hypotenuse 42B, 42C with respect to the central shaft 23 of tubular adapter 10 and the chevron of imaginary line 25 symmetry of the point of bisection of circular arc 42A.
It addition, be respectively equipped with tubular adapter 10 and the Fuelinjection nozzle 11 of 2 present embodiments by each cylinder, but 1 tubular adapter 10 and Fuelinjection nozzle 11 can also be respectively equipped with by each cylinder as shown in figure 14.The most as shown in figure 15, after tubular adapter 10 is temporarily fixed on main part 9, tubular adapter 10 is welded in main body
Portion and by fixture 31 when tubular adapter 10 is pulled down, can prevent projection 16 from catching on the recess 31b of fixture 31.
Therefore, the fixture of complicated composition, multiple fixture need not be used as in the past, can easily pull down fixture from the tubular adapter 10 of the projection 16 having towards different directions, easily tubular adapter 10 can be welded in main part 9.Accordingly, it is capable to improve the workability of the manufacturing operation of conveying pipe 8.
Although disclosing embodiments of the present invention, but understand for a person skilled in the art on the basis of without departing from the scope of the present invention, implement change.It is intended to all this corrections and equivalent are contained in appended claim.
Claims (3)
1. a conveying pipe, including: main part, it is on the bank of cylinder direction of internal combustion engine
Extend；Multiple tubular adapters, it is located at aforementioned body portion along above-mentioned bank of cylinder direction,
Link with the multiple Fuelinjection nozzles being formed with the 1st projection at peripheral part；And the 2nd projection,
It is formed at the peripheral part of above-mentioned tubular adapter,
By having the fixture of the recess with above-mentioned 2nd protrusions snap, above-mentioned tubular is connected
After device is temporarily fixed on aforementioned body portion, above-mentioned tubular adapter and aforementioned body portion are entered
Row welding,
Above-mentioned 1st projection and above-mentioned 2nd projection are engaged by holding section, by having above-mentioned card
The rotationally constrained component in conjunction portion, is connected to above-mentioned tubular adapter by above-mentioned Fuelinjection nozzle,
The central shaft making above-mentioned Fuelinjection nozzle be not about above-mentioned tubular adapter rotates,
Above-mentioned conveying pipe is characterised by,
Above-mentioned 2nd projection has the circular arc external with above-mentioned tubular adapter and from above-mentioned circular arc
A pair hypotenuse extending point-blank on cross one another direction of end points,
Above-mentioned 2nd projection is configured to, by the central shaft by above-mentioned tubular adapter and
At the side upwardly extending straight line orthogonal with above-mentioned bank of cylinder direction as datum line, with this base
Making above-mentioned circular arc on the basis of directrix is asymmetric relative to said reference line, and, above-mentioned
The hypotenuse of the 2nd projection is arranged in each end points by above-mentioned circular arc parallel with said reference line
2 imaginary lines between region.
Conveying pipe the most according to claim 1, it is characterised in that
Same above-mentioned cylinder is located at by 2 above-mentioned tubular adapters, is located at same above-mentioned gas
At least 1 above-mentioned cylinder adjacent relative to said reference alignment in above-mentioned 2nd projection of cylinder
Shape adapter rolls tiltedly.
3. according to the conveying pipe described in claim 1 or claim 2, it is characterised in that
Above-mentioned 2nd projection is formed as above-mentioned hypotenuse with respect in above-mentioned tubular adapter
Symmetrical subtriangular or trapezoidal of the imaginary line of the point of bisection of mandrel and above-mentioned circular arc.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-127751 | 2013-06-18 | ||
| JP2013127751A JP6119446B2 (en) | 2013-06-18 | 2013-06-18 | Delivery pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104234896A CN104234896A (en) | 2014-12-24 |
| CN104234896B true CN104234896B (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410256846.1A Active CN104234896B (en) | 2013-06-18 | 2014-06-10 | Conveying pipe |
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| Country | Link |
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| JP (1) | JP6119446B2 (en) |
| CN (1) | CN104234896B (en) |
| DE (1) | DE102014211136B4 (en) |
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|---|---|---|---|---|
| JP6389813B2 (en) * | 2015-09-29 | 2018-09-12 | 日立オートモティブシステムズ株式会社 | Rotation restricting member and assembly. |
| US11274642B1 (en) | 2021-08-31 | 2022-03-15 | Denso International America, Inc. | Fuel rail assembly |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2985977B2 (en) * | 1991-03-16 | 1999-12-06 | ダイハツ工業株式会社 | Engine fuel injection device |
| JPH1182231A (en) * | 1997-09-09 | 1999-03-26 | Sanou Kogyo Kk | Fuel injection nozzle mounting device |
| JP2003120466A (en) * | 2002-10-22 | 2003-04-23 | Sanoh Industrial Co Ltd | Connector for fuel injection nozzle, and manufacturing method thereof |
| DE10256668A1 (en) * | 2002-12-04 | 2004-07-29 | Robert Bosch Gmbh | support element |
| JP2004339992A (en) | 2003-05-14 | 2004-12-02 | Hitachi Unisia Automotive Ltd | Fuel injector |
| JP2005163627A (en) * | 2003-12-02 | 2005-06-23 | Mitsubishi Electric Corp | Fuel injection valve device |
| JP4225263B2 (en) * | 2004-10-04 | 2009-02-18 | 三菱自動車工業株式会社 | Injector mounting structure |
| JP4853680B2 (en) | 2008-03-24 | 2012-01-11 | 株式会社デンソー | Fuel supply device |
| US8297257B2 (en) * | 2008-03-26 | 2012-10-30 | Denso Corporation | Fuel supply pipe device and fuel injection device having the same |
| JP4544327B2 (en) * | 2008-03-27 | 2010-09-15 | 株式会社デンソー | Fuel injection device |
| US20100012093A1 (en) * | 2008-07-18 | 2010-01-21 | Pepperine Dean M | High-pressure fuel injector to fuel rail connection |
| DE102008057517A1 (en) * | 2008-11-15 | 2010-05-20 | Daimler Ag | Distributor pipe of fuel injection system of internal combustion engine for motor vehicle, comprises a tube-like main metal body having a hollow dome-like distributing metal sockets, which are connected with the interior of the main body |
| JP2011220259A (en) * | 2010-04-12 | 2011-11-04 | Hitachi Automotive Systems Ltd | Electromagnetic fuel injection system |
| JP2012007535A (en) * | 2010-06-24 | 2012-01-12 | Maruyasu Industries Co Ltd | Fuel delivery pipe with damper function |
| JP5423865B2 (en) * | 2012-11-08 | 2014-02-19 | 株式会社デンソー | Fuel injection device and clamp member |
-
2013
- 2013-06-18 JP JP2013127751A patent/JP6119446B2/en active Active
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2014
- 2014-06-10 CN CN201410256846.1A patent/CN104234896B/en active Active
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| Publication number | Publication date |
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| CN104234896A (en) | 2014-12-24 |
| JP2015001224A (en) | 2015-01-05 |
| JP6119446B2 (en) | 2017-04-26 |
| DE102014211136A1 (en) | 2014-12-18 |
| DE102014211136B4 (en) | 2023-09-21 |
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