CN100472062C - Pressure oil pipe of I.C. engine - Google Patents
Pressure oil pipe of I.C. engine Download PDFInfo
- Publication number
- CN100472062C CN100472062C CNB200310104374XA CN200310104374A CN100472062C CN 100472062 C CN100472062 C CN 100472062C CN B200310104374X A CNB200310104374X A CN B200310104374XA CN 200310104374 A CN200310104374 A CN 200310104374A CN 100472062 C CN100472062 C CN 100472062C
- Authority
- CN
- China
- Prior art keywords
- fuel
- pipe
- oil
- stream pipe
- insertion portion
- 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 claims abstract description 48
- 238000002347 injection Methods 0.000 claims abstract description 37
- 239000007924 injection Substances 0.000 claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 claims abstract description 20
- 239000000295 fuel oil Substances 0.000 claims description 107
- 239000003921 oil Substances 0.000 claims description 103
- 238000003780 insertion Methods 0.000 claims description 53
- 230000037431 insertion Effects 0.000 claims description 53
- 239000002828 fuel tank Substances 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000000638 solvent extraction Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000005266 casting Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241001463139 Vitta Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000010761 intermediate fuel oil Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- 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
-
- 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
-
- 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
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- 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
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
In a highly pressurized fuel piping for an internal combustion engine, a piping main body has an outer peripheral wall, a partitioning wall is formed integrally with the outer peripheral wall at least two of first and second fuel flow passages, divided with the partitioning wall of the piping main body, are formed within an inner space of the piping main body and extended mutually approximately in parallel to each other, a fuel introduction portion is formed to communicate with at least one of the first and second flow passages, a plurality of inserting portions are formed to communicate with at least one of the first and second flow passages, through each of which a corresponding one of the fuel injection device is insertable and a plurality of communication portions are formed through which the first and second fuel flow passages are mutually communicated.
Description
Field that the present invention belongs to
The present invention relates to a kind of high-pressure oil pipe (structure), the fuel delivery that is used for fuel tank is provided is to a lot of fueling injection equipments (for example, Electromagnetic Drive injection valve).
Background technique is described
In August 8 nineteen ninety-five disclosed Japanese Patent Application Publication text put down into 7-296768 and disclose first kind of existing high-pressure oil pipe.In above-mentioned open text, be provided with a dividing plate oil pipe main body is divided into fuel gallery up and down.The fuel gallery all is communicated with the two ends of oil pipe main body up and down.Then, fuel oil enters upper and lower fuel gallery from two ends.The delay that fuel pressure recovers all is different in each fueling injection equipment.Then, fuel oil flows out from the two ends of upper and lower fuel gallery.After fuel injection beginning, and then the delay in each fueling injection equipment intermediate fuel oil pressure recovery of Chu Xianing all is identical.The error of fuel injection quantity has just reduced like this.
In August 8 nineteen ninety-five disclosed Japanese Patent Application Publication text put down into 7-208298 and disclose second kind of existing high-pressure oil pipe.In the disclosure text, the inside of oil pipe main body is divided into fuel gallery up and down, in the fuel gallery oil-feed part is being arranged downwards, at discharge unit a pressure regulator is arranged, the fuel oil that enters from downward fuel gallery is by upwards the discharge unit and the pressure regulator of fuel gallery are got back in the fuel tank.Like this, after oil-feed, the fuel pressure that produces immediately between each fueling injection equipment recovers to postpone unitized, and the error of fuel injection quantity has also reduced.
Brief summary of the invention
In the common high-pressure oil pipe (structure) of internal-combustion engine, the suffered circumferential stress of oil pipe main body inner wall can be represented with following formula (1): σ max=p (r
2 2+ r
1 2)/(r
2 2-r
1 2)---(1), wherein σ max: Maximum circumferential stress (stress that oil pipe is subjected to owing to fuel pressure), p: the fuel pressure of oil pipe, r
1: pipe aperture, r
2: the oil pipe external diameter.If the oil pipe fuel pressure is very high, just must increase oil pipe volume in order to reduce fuel injection quantity and fluctuation noise.But, if internal diameter r
1With external diameter r
2Enlarge, circumferential stress will become a square doubly increase.Therefore, in order to guarantee the intensity of oil pipe, just tubing wall must be thickeied.And the heavy wall of oil pipe can make the weight of high-pressure oil pipe (structure) and size increase, and causes high-pressure oil pipe (structure) more expensive.In addition, the oversized dimensions of high-pressure oil pipe (structure) can not satisfy the engine design requirement.In above-mentioned first kind of high-pressure oil pipe, dividing plate only is to have isolated the oil pipe inner space, and the fuel pressure in the oil pipe only comes from the effect of tubing wall part.Therefore, circumferential stress is determined by the internal diameter and the external diameter of oil pipe main body.However, as mentioned above, must the heavy wall tubing wall.On the other hand, in second kind of above-mentioned high-pressure oil pipe structure, separate wall and integral body of tubing wall formation of oil pipe main body and bear fuel pressure.Therefore, circumferential stress works according to pipe aperture and external diameter.As mentioned above, circumferential stress and diameter is square corresponding.Therefore, if single tubing diameter diminishes, the circumferential stress that acts on whole oil pipe also diminishes.But, be different with distance to the center from oil-feed part to two ends.Fuel delivery speed is just different.Therefore when the oil pressure in the oil pipe main body raise, the uniformity of recovering to postpone at fuel pressure between each fuel injection quantity just became very difficult.
Therefore, an object of the present invention is to provide a kind of high-pressure oil pipe that is used for internal-combustion engine,, also can reduce the difference of fuel injection quantity even in high-pressure oil pipe, have under the situation of high fuel pressure very, and on the basis of the difference that reduces fuel injection quantity, obtain simple manufacture process with lower one-tenth instinct.
According to an aspect of the present invention, provide a kind of high-pressure oil pipe that is used for internal-combustion engine, internal-combustion engine comprises: a fuel tank; A lot of fueling injection equipments are fed in the fuel from fuel tank in each fueling injection equipment, and high-pressure oil pipe comprises:
An oil pipe main body, have outer circle wall and with the integrally formed partition wall of outer circle wall;
At least two fuel oil stream pipes of oil pipe main body comprise first and second fuel oils stream pipe, and described fuel oil stream pipe is arranged in the inner space of oil pipe main body, and stretching, extension is substantially parallel to each other;
An oil-feed part is communicated with first fuel oil stream pipe;
A plurality of insertion portions are communicated with second fuel oil stream pipe, and each fueling injection equipment can inject in each insertion portion accordingly;
Be positioned at a plurality of connected parts of partition wall, first and second fuel oils stream pipe interconnects by these a plurality of connected parts,
By the discharge unit that return tube is connected with fuel tank, be arranged on first fuel oil stream pipe or second fuel oil stream pipe.
According to a further aspect in the invention, provide a kind of method that is applied to the high-pressure oil pipe of internal-combustion engine, internal-combustion engine comprises: a fuel tank; A plurality of fueling injection equipments are assigned in the fuel from fuel tank in each fueling injection equipment, and described method comprises:
An oil pipe main body is provided, have outer circle wall and with the integrally formed partition wall of outer circle wall;
At least two fuel oil stream pipes of oil pipe main body are provided, comprise first and second fuel oils stream pipe, described fuel oil stream pipe is arranged in the inner space of oil pipe main body, and stretching, extension is substantially parallel to each other;
Form an oil-feed part, be communicated with first fuel oil stream pipe;
Form a plurality of insertion portions, be communicated with second fuel oil stream pipe, each fueling injection equipment can inject in each insertion portion accordingly;
Formation is positioned at a plurality of connected parts of partition wall, and first and second fuel oils stream pipe interconnects by these a plurality of connected parts,
Formation is arranged on first fuel oil stream pipe or second fuel oil stream pipe by the discharge unit that return tube is connected with fuel tank.
The general introduction of this part there is no need to describe all essential features, thereby the present invention can also be the sub-portfolio of above-mentioned feature.
The brief description of drawing
Fig. 1 has been to use the schematic block diagram of the oil supply system of the high-pressure oil pipe that is used for internal-combustion engine in first preferred embodiment of the present invention;
Fig. 2 is the perspective view of common rail among first embodiment among Fig. 1;
Fig. 3 is the sectional view of III-III ' line in Fig. 2;
Fig. 4 A, 4B and 4C are the schematic representation that concerns between each connected part and the insertion portion according in second preferred embodiment of the present invention.
Fig. 5 is the perspective view of common rail in the second embodiment of the present invention;
Fig. 6 is the sectional view of VI-VI ' line in Fig. 5;
Fig. 7 is the perspective view of common rail in the third embodiment of the present invention;
Fig. 8 is VII-VII in Fig. 7, the sectional view of line;
Fig. 9 is the perspective view of common rail in the fourth embodiment of the present invention;
Figure 10 is the sectional view of X-X ' line in Fig. 9;
Figure 11 is the schematic block diagram of another kind of oil supply system, its used with first to the 4th preferred embodiment of the present invention in different another kind of common rails.
The detailed description of invention
Below in conjunction with accompanying drawing will the present invention is described in detail.
(first embodiment)
[oil supply system]
Fig. 1 has been to use the schematic block diagram of the oil supply system of the high-pressure oil pipe that is used for internal-combustion engine in first preferred embodiment.
This oil supply system comprises that a common rail 1000 is used as the high-pressure oil pipe structure of internal-combustion engine; An injection system 2; A fuel tank 10.Common rail 1000 comprises an oil pipe main body 100; A partition wall 111; One first fuel oil stream pipe 101; One second fuel oil stream pipe 102; An oil-feed part 103; Insertion portion 104a is to 104d; Connected part 105a is to 105d.First fuel oil stream pipe, 101 and second fuel oil stream pipe 102 is by separately forming along Vertical direction with the inner space of partition wall 111 with oil pipe main body 100, having constituted mutual cavity arranged side by side.Oil-feed part 103 is arranged on an end of first fuel oil stream pipe 101, and links to each other with high-pressure oil feed pipe 3.It should be noted that oil-feed part 103 is arranged on an end of first fuel oil stream pipe 101, and link to each other with high-pressure oil feed pipe 3.Oil-feed part 103 is arranged on the left end of first fuel oil stream pipe 101.But, also can adopt different improved forms according to the design of motor.For example oil-feed part 103 also can be arranged on the right-hand member of first fuel oil stream pipe 101, perhaps can be arranged on the right-hand member of any one fuel oil stream pipe, perhaps can be arranged on the centre of first fuel oil stream pipe 101 or an end of first fuel oil stream pipe, 101 or second fuel oil stream pipe 102.
[common rail]
Fig. 2 is the perspective view of common rail 1000.Fig. 3 is the sectional view of III-III ' line.In Fig. 2 and 3, identical reference character represent with Fig. 1 in corresponding components.
If on each direction of insertion from insertion portion 104a to 104d (in direction shown in the arrow of Fig. 2 to 3), connected part 105a is included in insertion portion 104a in the opening scope of 104d to the opening of 105d.
Fig. 4 A is to see the schematic representation that concerns between the insertion portion 104a along direction shown in the arrow of Fig. 2 to 3 to 4C.For example, Fig. 4 A is a relation between insertion portion 104a and the connected part 105a to 4C.Other insertion portion 104b also is identical to 104d and other connected part 105b to the relation between the 105d.In Fig. 4 A, the opening of insertion portion 104a and connected part 105a is coaxial, and the opening of connected part 105a is less than insertion portion 104a.In Fig. 4 B, insertion portion 104a is not coaxial with the opening of connected part 105a, and greater than the opening of connected part 105a.In Fig. 4 C, the opening of insertion portion 104a and connected part 105a is coaxial, and identical with the diameter of the opening of insertion portion.Connected part 105a can be identical with Fig. 4 A any one in the 4C to the size of the opening of 105d and position relation.
Since connected part 105a is included in insertion portion 104a in the opening scope of 104d to the opening of 105d, at common rail 1000 is under the situation about making with aluminium injection moulding, forms the connected part 105a of mutual correspondence simultaneously to 105d by a common casting core.If the opening of connected part 105a to 105d and insertion portion 104a to 104d is coaxial, and diameter is identical, be easy to just form the casting core.In addition, after the casting step is finished, come to hole to 104d to insertion portion 104a with cut drill.Connected part 105a can finish in a drilling operation to the opening of 104d simultaneously to 105d and insertion portion 104a in this case.
In addition, there is main body attachment portion 110a to stretch along Vertical direction in the side of oil pipe main body 100 to 110d.110a has through hole on the Vertical direction of 110d in the main body attachment portion.
(1-2) action
In the common rail 1000 according to first embodiment of the invention, the fuel oil in the fuel tank 10 enters oil-feed part 103, is full of first fuel oil stream pipe, 101 and second fuel oil stream pipe 102 by connected part 105a to 105d then.Fuel oil aggregation is in first fuel oil stream pipe, 101 and second fuel oil stream pipe 102.After this, when the oil pressure of oil pressure sensor 5 mensuration was needed value, the fuel oil of specified rate was ejected into rapidly in each self-corresponding cylinder with predetermined sequence to 2d from fueling injection equipment 2a separately.And then fuel oil just promptly adds to fueling injection equipment 2a by the part 105a of UNICOM to 2d to 105d after spraying, connected part is positioned at oily fueling injection equipment 2a directly over 2d.If oil pressure has surpassed predetermined value, safety valve 4 is opened, and the fuel oil in the oil pipe main body 100 is got back in the fuel tank 10, so just can prevent that oil pressure is equal to or greater than predetermined value.
In addition, the circumferential stress that is applied on the inwall of oil pipe main body 100 is assigned on two fuel oils stream pipes of (or being distributed to) first fuel oil stream pipe 101 and second fuel oil stream pipe 102.Though must make that in existing vitta structure the thickness of oil pipe is that 5.5mm has and the identical intensity of fuel oil stream pipe to guarantee oil pipe.But in the present embodiment, circumferential stress is assigned on (or being distributed to) two fuel oil stream pipe 101, has so just reduced required intensity.The thickness of oil pipe is 4mm in the present embodiment.Like this, just can be so that the weight of common rail 1000 is lighter, size is littler, manufacture cost is lower.
(1-3 advantage)
In the common rail 1000 of first embodiment of the invention, even constantly reduce in injection process to the oil pressure near the common rail the 104d at each insertion portion 104a, fuel oil also can promptly add to insertion portion 104a to the part 105a of UNICOM in the opening scope of 104d in 104d to 105d by being included in insertion portion 104a.Like this, the delay that the oil pressure between each fueling injection equipment that and then carries out after oil spout recovers just becomes consistent, and the difference of fuel injection quantity will reduce.
In addition, because high-voltage tube 3 and return tube 8 are communicated with return tube 8 in first fuel oil stream pipe 101, so the caused fluctuation of oil spout will reduce because of the inner chamber that second fuel oil stream pipe 102 is arranged and partition wall 111, and the fluctuations of propagating from high-pressure oil pipe 3 and return tube 8 through first fuel oil stream pipe 101 can be reduced.
In addition, in common rail 1000 according to first embodiment of the invention, by using a lot of communication passage 105a can just can install so constitute the pressure regulator of oil return system so that reduce to the difference of the fuel injection quantity between the 2d at each fueling injection equipment 2a to 105d.Therefore, the quantity of parts just can reduce.Manufacture cost just can reduce like this.
In addition, because in the common rail of first embodiment of the invention, owing to have a plurality of fuel oil stream pipes (first fuel oil stream pipe, 101 and second fuel oil stream pipe 102) to cause circumferential stress to be disperseed, so required oil pipe intensity can reduce and oil pipe thickness just can reduce.The effect that like this, just can reach weight reduction, reduces size, reduces cost.In addition, the size of common rail 1000 is less can also to reduce the engine design difficulty, and guarantees to have enough space to reduce unusual fluctuation noise.Therefore, just do not need to disturb the noise of anomalous fluctuations noise generation to produce protector.Like this, the quantity of parts just can reduce, and manufacture cost just can reduce.In addition, when adopting aluminium injection moulding to make common rail 1000, the thickness of oil pipe main body 100 is thick, just might produce the error on shrinkage cavity and the density.But according to the common rail among first embodiment 1000, the thickness of oil pipe main body can attenuation, prevents that like this error from appearring in shrinkage cavity and density.
And in common rail 1000 according to the present invention, partition wall 111 forms one with outer circle wall 112.Therefore, the quantity of parts just can reduce, and manufacture process just can be simplified.Common rail 1000 manufacture costs just can reduce.
In addition, in the common rail 1000 in first embodiment of the invention, connected part 105a is arranged in the open area of insertion portion 104a to 104d to the opening of 105d.Casting core like this, jointly just can be used for the connected part 105a of mutual correspondence is cast in to 104d with insertion portion 104a simultaneously to 105d.Perhaps, after casting process, come to hole to 105d to 104d and connected part 105a to insertion portion 104a with cut drill.Like this, insertion portion 104a can create to 105d at an easy rate to 104d and connected part 105a.Like this, manufacture process can be simplified, and manufacture cost can reduce.
(second embodiment)
(2-1) structure
Fig. 5 is the perspective view of common rail 2000 in the second embodiment of the present invention.Fig. 6 is the sectional view of VI-VI ' line.In a second embodiment, each connected part 205a can be not to the location of 205d with each insertion portion 204a to the 204d correspondence, but be in each insertion portion 204a to the position that 204d departs from.
On second embodiment's common rail, communication apparatus 205a is not in insertion portion 204a directly over 204d to 205d.Therefore, near insertion portion 204a caused pressure surge to the position of 204d will spread (irrgular reflection), and reduce.Like this, pressure surge just passes to high-pressure oil feed pipe 3 and return tube 8 by connected part 205a to 205d, so just can stop the propagation of abnormal sound.
(the 3rd embodiment)
(3-1) structure
Fig. 7 is the perspective view of common rail 3000 in the third embodiment of the present invention.Fig. 8 is the sectional view along VII-VII ' line.In this embodiment, fuel emission part 106 and 206 is not to be communicated with first fuel oil stream pipe 301 on the direction that makes progress.Opening 108 and 208 is not the low order end that is in first fuel oil stream pipe 302.Opening 308 is positioned at the high order end of second fuel oil stream pipe 302.So open part 303 is as oil-feed part 303, open part 308 is as fuel emission part 308.So oil-feed part 303 is connected on the high-pressure oil feed pipe 3.A safety valve 4 is installed on the fuel emission part 308.On the other hand, open part 303 is as fuel emission part 303, and open part 308 is as oil-feed part 308.So safety valve 4 can be installed on the discharge unit 303, high-pressure oil feed pipe 3 can be connected on the oil-feed part 308.
(3-2) action and advantage
In the common rail 3000 of third embodiment of the invention, have first fuel oil stream pipe, 301 and second fuel oil stream pipe 302.Simultaneously, oil-feed part 303 and fuel emission part 308 are also arranged.In addition, discharge unit 106 and 206 needn't be set in addition.Like this, manufacture process is simplified, and manufacture cost reduces.
(the 4th embodiment)
(4-1) structure
Fig. 9 is the perspective view of common rail 4000 in the fourth embodiment of the present invention.Figure 10 is the sectional view of X-X ' line in Fig. 9.In the 4th embodiment, connected part 405a to the quantity of 405c less than the quantity of insertion portion 404a to 404d.In the 4th embodiment, the bearing of trend of each connected part 405a to 405c along oil pipe main body 400 is arranged on each insertion portion 404a to about intermediate portion of 404d.
(4-2) action and advantage
In the 4th embodiment's common rail 4000, connected part 405a to the quantity of 405c less than the quantity of insertion portion 404a to 404d.But, even in this case, owing to have a plurality of connected part 405a to 405c, just can be so that fueling injection equipment 2a reduces to the difference of the fuel oil recovery of 2d.Can be so that each fueling injection equipment 2a be identical to the fuel injection quantity of 2d.
(another kind of embodiment)
In the above-described embodiment, have two fuel galleries 101 and 102.But three fuel galleries (as shown in figure 11 101,102 and 102A) and oil-feed part also can be arranged, so that be communicated with any one fuel oil stream pipe, fuel gallery adjacent one another are can be communicated with any one fuel oil stream pipe.In this case, the circumferential stress that is applied on the inwall of common rail 1000 is just further disperseed, and the thickness of oil pipe just can be thinner.It should be noted that in Figure 11 reference character 111A represents another partition wall outside the divide wall 111, and have connected part 105A, 105B, 105C and 105D and the 3rd fuel oil stream pipe 102A, represented identical among other structure and Fig. 1.
The full text of Japanese patent application № 2002-317565 (is on October 31st, 2002 in the applying date of Japan) here is incorporated herein by reference.
Claims (8)
1, a kind of high-pressure oil pipe that is used for internal-combustion engine, this internal-combustion engine comprises: a fuel tank (10); A plurality of fueling injection equipments (2a is to 2d) are fed in each fueling injection equipment by described high-pressure oil pipe in the fuel from fuel tank (10), and described high-pressure oil pipe comprises:
An oil pipe main body (100,200,400), have outer circle wall (112,212,412) and with the integrally formed partition wall of outer circle wall (112,212,412) (111,211,411,111A);
At least two fuel oil stream pipes of oil pipe main body (100,200,400), comprise first and second fuel oils stream pipe (111,211,411,111A), this first and second fuel oils stream pipe is arranged in the inner space of oil pipe main body, and is separated the wall separation, and stretching, extension is substantially parallel to each other;
An oil-feed part (103,203,403) is communicated with first fuel oil stream pipe (101,201,401);
A plurality of insertion portions (104a to 104d, 204a to 204d, 404a to 404d) are communicated with second fuel oil stream pipe (102,202,402), and each fueling injection equipment (2a is to 2d) can inject in each insertion portion accordingly;
Be positioned at partition wall a plurality of connected parts (105a to 105d, 205a to 205d, 405a to 405d, 105A to 105D), first and second fuel oils stream pipe (101,102,201,202,401,402) interconnects by these a plurality of connected parts,
By the discharge unit (106,206,308,406) that return tube (8) is connected with fuel tank (10), be arranged on first fuel oil stream pipe (101,201,401) or second fuel oil stream pipe (302),
A plurality of connected parts (105a is to 105d) arrange along the bearing of trend of oil pipe main body, and with any one of a plurality of insertion portions (104a is to 104d) position deflection are arranged.
2, the high-pressure oil pipe that is used for internal-combustion engine according to claim 1, it is characterized in that, the position at each connected part (105a is to 105d) place is all corresponding with an insertion portion (104a is to 104d), like this, from direction of insertion, the opening of each connected part just is included within the opening scope of corresponding insertion portion.
3, the high-pressure oil pipe that is used for internal-combustion engine according to claim 2 is characterized in that, each connected part is all coaxial with corresponding insertion portion with the oil pipe body position place of its corresponding insertion portion.
According to claim 2 or the 3 described high-pressure oil pipes that are used for internal-combustion engine, it is characterized in that 4, the quantity of connected part (105a is to 105d) is identical with the quantity of insertion portion (104a is to 104d).
5, the high-pressure oil pipe that is used for internal-combustion engine according to claim 2 is characterized in that, the quantity of connected part (105a is to 105c) is less than the quantity of insertion portion (104a is to 104d).
6, according to any one described high-pressure oil pipe that is used for internal-combustion engine in the claim 1 to 3, it is characterized in that, at least another fuel oil stream pipe (102A) is along stretching with the parallel substantially direction of first and second fuel oils stream pipe, and is communicated with at least one (101 or 102) in first and second fuel oils stream pipe.
According to any one described high-pressure oil pipe that is used for internal-combustion engine in the claim 1 to 3, it is characterized in that 7, oil-feed part (103) is positioned at the opening end of first fuel oil stream pipe (101).
According to any one described high-pressure oil pipe that is used for internal-combustion engine in the claim 1 to 3, it is characterized in that 8, discharge unit (308) is positioned at the opening end (308) of second fuel oil stream pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP317565/2002 | 2002-10-31 | ||
| JP2002317565A JP4134681B2 (en) | 2002-10-31 | 2002-10-31 | High pressure fuel piping for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1499072A CN1499072A (en) | 2004-05-26 |
| CN100472062C true CN100472062C (en) | 2009-03-25 |
Family
ID=32089572
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200310104374XA Expired - Fee Related CN100472062C (en) | 2002-10-31 | 2003-10-27 | Pressure oil pipe of I.C. engine |
| CNU2003201038639U Expired - Fee Related CN2718242Y (en) | 2002-10-31 | 2003-10-30 | High pressure oil tube for internal combustion engine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201038639U Expired - Fee Related CN2718242Y (en) | 2002-10-31 | 2003-10-30 | High pressure oil tube for internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1416151B1 (en) |
| JP (1) | JP4134681B2 (en) |
| KR (1) | KR100585361B1 (en) |
| CN (2) | CN100472062C (en) |
| DE (1) | DE60318799T2 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4069913B2 (en) * | 2004-09-10 | 2008-04-02 | 株式会社デンソー | Joining member joining method and attachment stay joining method used in an accumulator fuel injection system |
| EP1705366A1 (en) * | 2005-03-03 | 2006-09-27 | Siemens Aktiengesellschaft | High-pressure fuel storage unit |
| US7699041B2 (en) * | 2007-12-11 | 2010-04-20 | Delphi Technologies, Inc. | Fuel distribution tube for direct injection fuel rail assemblies |
| JP2011069254A (en) * | 2009-09-24 | 2011-04-07 | Daihatsu Motor Co Ltd | Fuel delivery pipe for internal combustion engine |
| JP2011069255A (en) * | 2009-09-24 | 2011-04-07 | Daihatsu Motor Co Ltd | Fuel delivery pipe for internal combustion engine |
| DE102010051004A1 (en) * | 2010-11-10 | 2012-05-10 | Poppe & Potthoff Gmbh | Fuel rail for fuel rail assembly, for use in fuel injection system, has cross hole, which guides from inside of fuel rail through its wall to its outer side |
| CN101984248B (en) * | 2010-11-30 | 2012-01-04 | 天津雷沃动力股份有限公司 | High-pressure oil rail with novel structure |
| DE102011112376A1 (en) | 2011-09-02 | 2013-03-07 | Poppe & Potthoff Gmbh | Fuel rail for use in common-rail injection system of diesel engine, has connection fittings connected to outer side of base body, where one of fittings connect high-pressure supply line and branch pipe that is attached with branch line |
| DE102012206984A1 (en) * | 2012-04-26 | 2013-10-31 | Bayerische Motoren Werke Aktiengesellschaft | High pressure fuel rail for a fuel injection system for an internal combustion engine |
| DE102013214965A1 (en) * | 2013-07-31 | 2015-02-05 | Robert Bosch Gmbh | Fuel distributor and fuel injection system |
| GB201514053D0 (en) * | 2015-08-10 | 2015-09-23 | Delphi Int Operations Lux Srl | Novel fuel rail for injection system |
| GB2570114A (en) * | 2018-01-10 | 2019-07-17 | Delphi Tech Ip Ltd | Fuel common rail |
| DE102018209130A1 (en) * | 2018-06-08 | 2019-12-12 | Robert Bosch Gmbh | Fuel storage arrangement and internal combustion engine with such an arrangement |
| CN109973269A (en) * | 2018-12-11 | 2019-07-05 | 上海威克迈龙川汽车发动机零件有限公司 | A kind of distribution pipe and its processing technology and engine high pressure oil rail assembly |
| DE102019204150A1 (en) * | 2019-03-26 | 2020-10-01 | Robert Bosch Gmbh | High pressure accumulator for fuels, fuel system |
| CN110206668B (en) * | 2019-04-19 | 2022-12-16 | 浙江派尼尔科技股份有限公司 | Intelligent oil rail suitable for digital air pressurization and adjustment of V6 engine |
| CN113931763A (en) * | 2021-09-30 | 2022-01-14 | 东风商用车有限公司 | High-pressure common rail pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4601275A (en) * | 1982-08-23 | 1986-07-22 | General Motors Corporation | Fuel rail |
| US5311850A (en) * | 1989-01-11 | 1994-05-17 | Martin Tiby M | High pressure electronic common-rail fuel injection system for diesel engines |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3355699B2 (en) * | 1993-06-11 | 2002-12-09 | 株式会社デンソー | Accumulator |
| JPH07208298A (en) * | 1994-01-27 | 1995-08-08 | Aisin Seiki Co Ltd | Fuel distributing pipe for internal combustion engine |
| JPH09296768A (en) * | 1996-05-01 | 1997-11-18 | Denso Corp | Fuel supply device for internal combustion engine |
-
2002
- 2002-10-31 JP JP2002317565A patent/JP4134681B2/en not_active Expired - Fee Related
-
2003
- 2003-10-27 CN CNB200310104374XA patent/CN100472062C/en not_active Expired - Fee Related
- 2003-10-30 DE DE60318799T patent/DE60318799T2/en not_active Expired - Lifetime
- 2003-10-30 EP EP03025053A patent/EP1416151B1/en not_active Expired - Lifetime
- 2003-10-30 KR KR1020030076292A patent/KR100585361B1/en active IP Right Grant
- 2003-10-30 CN CNU2003201038639U patent/CN2718242Y/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4601275A (en) * | 1982-08-23 | 1986-07-22 | General Motors Corporation | Fuel rail |
| US5311850A (en) * | 1989-01-11 | 1994-05-17 | Martin Tiby M | High pressure electronic common-rail fuel injection system for diesel engines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN2718242Y (en) | 2005-08-17 |
| DE60318799T2 (en) | 2008-06-05 |
| DE60318799D1 (en) | 2008-03-13 |
| CN1499072A (en) | 2004-05-26 |
| EP1416151A3 (en) | 2005-06-01 |
| JP4134681B2 (en) | 2008-08-20 |
| KR20040038832A (en) | 2004-05-08 |
| KR100585361B1 (en) | 2006-06-01 |
| JP2004150368A (en) | 2004-05-27 |
| EP1416151B1 (en) | 2008-01-23 |
| EP1416151A2 (en) | 2004-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100472062C (en) | Pressure oil pipe of I.C. engine | |
| JP2694276B2 (en) | Fuel supply device | |
| US5752486A (en) | Accumulator fuel injection device | |
| CN101135283B (en) | High-pressure fuel supply pump | |
| CN102422020B (en) | For high pressure piston petrolift valve cell and comprise the pump of this valve cell | |
| US20200318525A1 (en) | Liquid-cooled internal combustion engine | |
| CN102713235B (en) | Be used in the method for the sparger constant temperature of the injection apparatus inside burner oil to combustion chambers of internal combustion engines | |
| JPS60119364A (en) | Solenoid fuel injection valve | |
| US20130306168A1 (en) | Fuel feed device with integrated vertical ejector pump | |
| CN102734023A (en) | Pump pressure control valve with shock reduction features | |
| CN109184998A (en) | The high pressure co-rail system of V-type multi-cylinder diesel engine | |
| CN109891082A (en) | Gasoline directly sprays track | |
| EP3521611B1 (en) | Fuel supply system for engine, engine, fuel supply method and computer program product | |
| EP1221548A2 (en) | Monocoque intake manifold assembly | |
| US20050166898A1 (en) | Fuel injection system and cylinder head with a central fuel reservoir | |
| CN104234892A (en) | Low-pressure loop of fuel feed device of fuel injection system | |
| EP3805547A1 (en) | Fuel injection assembly and method of manufacturing a fuel rail assembly | |
| EP1231379B1 (en) | Fuel feed device of engine | |
| US6606977B1 (en) | Fluid delivery line geometry optimization | |
| CN215256540U (en) | Low pressure assembly and fuel injection system | |
| EP3112664B1 (en) | Fluid pump | |
| CN211875640U (en) | Centralized intelligent lubricating system capable of supplying oil at multiple points or at single point simultaneously | |
| EP3670895A1 (en) | Fuel rail assembly for a fuel injection system for an internal combustion engine and method for manufacturing a fuel rail assembly | |
| CN111120170A (en) | High-pressure fuel oil distributor for double-fuel-supply-pump fuel oil system | |
| CN205036487U (en) | Modular fuel injection equipment and engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |