CN107250520A - The supply passageway construction of gaseous fuel - Google Patents
The supply passageway construction of gaseous fuel Download PDFInfo
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- CN107250520A CN107250520A CN201680011264.4A CN201680011264A CN107250520A CN 107250520 A CN107250520 A CN 107250520A CN 201680011264 A CN201680011264 A CN 201680011264A CN 107250520 A CN107250520 A CN 107250520A
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- Prior art keywords
- downstream
- supply passageway
- inclined plane
- face
- cng
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- 239000000446 fuel Substances 0.000 title claims abstract description 87
- 238000010276 construction Methods 0.000 title claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 99
- 238000002347 injection Methods 0.000 claims abstract description 56
- 239000007924 injection Substances 0.000 claims abstract description 56
- 230000000694 effects Effects 0.000 description 21
- 238000002485 combustion reaction Methods 0.000 description 19
- 239000007789 gas Substances 0.000 description 14
- 239000003502 gasoline Substances 0.000 description 13
- 230000008033 biological extinction Effects 0.000 description 9
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 210000001367 artery Anatomy 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The supply passageway construction of gaseous fuel possesses supply CNG supply passageway, located at supply passageway come the CNG injection valves of the supply form that changes CNG and the attenuating member for the inside for being configured at cover main body.There is inclined plane at least one of upstream face and downstream end face of attenuating member.The decay path in inclined plane opening is provided with attenuating member.
Description
Technical field
The supply of gaseous fuel is changed the present invention relates to the supply passageway for possessing gaseous fuelled, located at supply passageway
The supply passageway construction of the gaseous fuel of the valve of form.
Background technology
Recorded optionally using liquid fuel and an example of the internal combustion engine of gaseous fuel in patent document 1.
In such internal combustion engine, it is however generally that, it is connected with the gas of storage high pressure in the upstream end of the supply passageway of gaseous fuelled
The fuel tank of fluid fuel.In addition, will eject in injection valve of the supply passageway provided with gas injection fuel and from injection valve
Fuel hose that gaseous fuel is guided into inlet manifold etc..
But, if injection valve is opened, gaseous fuel is flowed into, than in the downstream supply passageway of injection valve downstream
Pressure sharp rises.Therefore, if injection valve is intermittently opened and closed, the pressure arteries and veins of gaseous fuel is produced in the supply passageway of downstream
It is dynamic.It is possible to vibrate and produce noise as a result, being connected with inlet manifold of downstream supply passageway etc..
As the method for the generation for the noise for suppressing the opening and closing with injection valve, it is known to following method.For example special
Sharp document 2 records following content：Attenuating member is provided with the supply passageway of downstream, so that the gas combustion in the supply passageway of downstream
The pressure fluctuation decay of material.Attenuating member has：Upstream face, it is located at the gas that gaseous fuel flows in the supply passageway of downstream
Flow the upstream side in direction；Downstream end face, it is located at downstream.In addition, attenuating member have upstream face and downstream end face this
The decay path of both openings.In addition, the half-way of airflow direction of the attenuating member on decay path has passage sections
Product accumulates narrow restriction than the passage sections of other parts.Due to producing the pressure loss when gaseous fuel is by restriction,
The flow velocity of gaseous fuel is slack-off.As a result, with the pressure arteries and veins of the gaseous fuel in the downstream supply passageway of the opening and closing of injection valve
It is dynamic to be attenuated.
In order to improve the extinction efficiency of the pressure fluctuation in the supply passageway of downstream, it may be desirable to make the restriction of attenuating member
Opening it is narrower.Thus, gaseous fuel can be difficultly flowed into restriction, caused in the supply passageway of downstream provided with attenuating member
The pressure loss can increase.As a result, can more effectively suppress the pressure fluctuation of the gaseous fuel in the supply passageway of downstream.
However, foreign matter flows in supply passageway sometimes along with gaseous fuel.Therefore, if the opening of restriction is narrow,
Then the opening of restriction is possible to by foreign matters from being blocked, and gaseous fuel is without supply in normal direction inlet manifold.
So the problem of, is not only constructing generation to the supply passageway of internal combustion engine gaseous fuelled, electric to such as fuel
The supply passageway construction of the gaseous fuels such as pond supply hydrogen is similarly produced.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2012-233418 publications
Patent document 2：Japanese Unexamined Patent Publication 2010-236391 publications
The content of the invention
Problems to be solved by the invention
It is an object of the invention to provide a kind of reduction for the efficiency of supply that can suppress gaseous fuel, while making to lean on than valve
The supply passageway construction for the gaseous fuel that the extinction efficiency of the pressure fluctuation of gaseous fuel in the supply passageway in downstream is improved.
The solution used to solve the problem
In order to solve the above problems, according to the first form of the present invention there is provided a kind of supply passageway of gaseous fuel construction,
It possesses：The supply passageway of gaseous fuelled；Valve, it is located at supply passageway, changes the supply form of gaseous fuel；Decay structure
Part, it is configured at the part than the valve downstream i.e. downstream supply passageway of supply passageway, is supplied by gaseous fuel in downstream
In the case that the direction of flowing is set to airflow direction in path, attenuating member has：Upstream face, it is located at the upper of airflow direction
Swim side；Downstream end face, it is located at the downstream of airflow direction；Decay path, it is opened in both upstream face and downstream end face
Mouthful.What the position of at least one of upstream face and downstream end face with the airflow direction with close summit was gradually changed inclines
Inclined-plane, decay path is in inclined plane opening.
In order to solve the above problems, according to the second form of the present invention there is provided a kind of supply passageway of gaseous fuel construction,
It possesses：The supply passageway of gaseous fuelled；Valve, it is located at supply passageway, changes the supply form of gaseous fuel；Decay structure
Part, it is configured at the part than the valve downstream i.e. downstream supply passageway of supply passageway, is supplied by gaseous fuel in downstream
In the case that the direction of flowing is set to airflow direction in path, attenuating member has：Upstream face, it is located at the upper of airflow direction
Swim side；Downstream end face, it is located at the downstream of airflow direction；Decay path, it is opened in both upstream face and downstream end face
Mouthful.Upstream face has：1st inclined plane, it is tilted with close to radially inner side to the upstream side of airflow direction；2nd tilts
Face, it is connected with the end of the radially inner side of the 1st inclined plane, is rolled with close to radially inner side to the downstream of airflow direction
Tiltedly, in upstream face, coupling part opening of the decay path between the 1st inclined plane and the 2nd inclined plane.
Brief description of the drawings
Fig. 1 is the structure for representing to possess the outline of the internal combustion engine of the supply passageway construction of the gaseous fuel of the 1st embodiment
Figure.
Fig. 2 is the top view for representing the cover that CNG injection valves are connected.
Fig. 3 is the sectional view along Fig. 2 3-3 lines.
Fig. 4 is the partial sectional view for the structure for representing attenuating member.
Fig. 5 (a) be illustrate CNG flow into decay path when effect action diagram, Fig. 5 (b) is to illustrate CNG from declining
Subtract the action diagram of the effect when path is flowed out.
Fig. 6 is the sectional view of the schematic configuration for the attenuating member and its surrounding member for representing the 2nd embodiment.
Fig. 7 is the sectional view of the schematic configuration for the attenuating member and its surrounding member for representing another.
Fig. 8 be the attenuating member for representing another a part and its surrounding member schematic configuration sectional view.
Fig. 9 is the sectional view of the schematic configuration for the attenuating member and its surrounding member for representing another.
Figure 10 be the attenuating member for representing another a part and its surrounding member schematic configuration sectional view.
Embodiment
(the 1st embodiment)
Hereinafter, it is real to the supply passageway of the gaseous fuel of the present invention is constructed into embody one according to Fig. 1~Fig. 5 (b)
The mode of applying is illustrated.
Internal combustion engine 10 is optionally to use the CNG (compressed natural gas body) of an example as gaseous fuel and make
For the internal combustion engine of the double fuel type of the gasoline of an example of liquid fuel.
As shown in figure 1, the cylinder head 11 in internal combustion engine 10 has been internally formed air inlet 12.Install oriented in cylinder head 11
The gasoline injection valve 21 of the internal spray gasoline of air inlet 12.The one of intake channel 13 is constituted in addition, being provided with internal combustion engine 10
Partial inlet manifold 14.In fuel injection cylinder 31 of the inlet manifold 14 provided with drum.Spray CNG CNG injection valves
32 connect with fuel injection cylinder 31.When CNG is supplied to internal combustion engine 10, CNG flows into inlet manifold 14 from fuel injection cylinder 31
It is interior.
In the inside of intake channel 13, the mixed gas containing fuel and suction air is generated.Fuel is used by gasoline
The opening and closing of injection valve 21 or the opening and closing of CNG injection valves 32 and supplied to intake channel 13.In mixed gas is inhaled into
After having been burnt in the combustion chamber 15 of combustion engine 10, as burning gases.Burning gases are from combustion chamber 15 to the row of exhaust channel 16
Go out.
Internal combustion engine 10 possesses supply gasoline and supplied as the gas supply system 20 of fuel and supply CNG as the CNG of fuel
To system 30.Gas supply system 20 possesses petrolift 23 and the confession of the suction gasoline out of gasoline fuel tank 22 and pressurized delivered
The gasoline delivery pipe 24 flowed into by the fuel that the pressurized delivered of petrolift 23 is come.It is connected with and internal combustion engine in gasoline delivery pipe 24
10 4 gasoline injection valves 21 of number of cylinders identical.Gasoline injection valve 21 is respectively arranged in each gas with internal combustion engine 10
Cylinder, i.e., corresponding 4 air inlets 12 of each cylinder.By being opened and closed gasoline injection valve 21, vapour of the gasoline in delivery pipe 24
Oil sprays into each air inlet 12 of internal combustion engine 10.
CNG feed systems 30 possess：Fuel under high pressure pipe arrangement 34, it is connected to the CNG tanks 33 for the CNG for being stored with high pressure；CNG
With delivery pipe 35, the end of downstream side (being right part in Fig. 1) in itself and the fuel flowing direction of fuel under high pressure pipe arrangement 34 is connected.
CNG injection valves 32 are connected with CNG delivery pipes 35.In addition, the quilt of cover 36 extended substantially in parallel with CNG delivery pipes 35
Bolt is fixed on CNG delivery pipes 35.CNG injection valves 32 be sandwiched in cover 36 and CNG with the state between delivery pipe 35 every
Open and equally spaced arrange.
Fuel hose 37 is connected with cover 36.In CNG ejection sections of the injection valve 32 provided with injection CNG.CNG injection valves
32 ejection section is connected via the through hole being internally formed in cover 36 with fuel hose 37.In the fuel flowing of fuel hose 37
The end of downstream side in direction is connected with fuel injection cylinder 31.If CNG injection valves 32 are opened and closed, CNG is with delivery pipe 35
CNG is flowed into by the inside and fuel hose 37 of cover 36 from fuel injection cylinder 31 into inlet manifold 14.In present embodiment
In, constitute supply CNG's by fuel under high pressure pipe arrangement 34, CNG delivery pipes 35, cover 36, fuel hose 37 and fuel injection cylinder 31
Supply passageway.In addition, the ratio CNG injection valves 32 for constituting supply passageway by cover 36, fuel hose 37 and fuel injection cylinder 31 are leaned on
The part in downstream is downstream supply passageway.
In CNG feed systems 30, provided with 4 downstream supply passageways of number of cylinders identical with internal combustion engine 10.CNG is under
Swim supply passageway and respectively inwards combustion engine 10 4 cylinders supply.
In CNG feed systems 30, manual open and close valve 38 is provided between CNG tanks 33 and fuel under high pressure pipe arrangement 34.In addition,
The downstream of the manual open and close valve 38 of fuel under high pressure pipe arrangement 34 is provided with the stop valve 39 being opened and closed by control device.In manual open and close valve
38 and stop valve 39 both in the case of valve opening, license CNG is flowed into from CNG tanks 33 into fuel under high pressure pipe arrangement 34.Manual
In the case of at least one of open and close valve 38 and stop valve 39 valve closing, CNG is flowed into from CNG tanks 33 into fuel under high pressure pipe arrangement 34
It is prohibited.
The pressure for being provided with the CNG to being supplied from CNG tanks 33 in the downstream of the stop valve 39 of fuel under high pressure pipe arrangement 34 is carried out
The adjuster 40 of decompression.Adjuster 40 makes to be depressurized to predetermined pressure with the CNG supplied in delivery pipe 35 to CNG.
Then, reference picture 2 and Fig. 3 are illustrated to CNG with the connecting structure between injection valve 32 and cover 36.
As shown in Figures 2 and 3, cover 36 possess cover main body 42 and with companies of the CNG with the quantity identical quantity of injection valve 32
Adapter 43.It is provided with and through holes 50 of the CNG with the quantity identical quantity of injection valve 32 in cover main body 42.By CNG in through hole
The direction of flowing is referred to as airflow direction X in 50.In figs. 2 and 3, upside is set to airflow direction X upstream side, downside is set
For airflow direction X downstream.
The ejection section 32A of CNG injection valves 32 is inserted through hole 50 from the opening 51 of airflow direction X upstream side.Cause
This, CNG is located at airflow direction X upstream side with the ejection section 32A of injection valve 32 in through hole 50.In the formation of cover main body 42
Being provided between the perisporium and CNG injection valves 32 of through hole 50 is used to ensure the gas of cover main body 42 and CNG between injection valve 32
The containment member 44 of close property.
In addition, connecting tube 43 is pressed into through hole 50 from the opening in airflow direction X downstream.Fuel hose 37 is via even
Adapter 43 is connected with cover 36.In addition, through hole 50, along airflow direction X arrange CNG injection valve 32 and connecting tube 43
Upstream end 43A between the attenuating member 60 provided with the pressure fluctuation decay for making CNG in the supply passageway of downstream.By through hole
In the case that the position for being configured with attenuating member 60 in 50 is set to the 1st passage portion, formed in the upstream end 43A of connecting tube 43
The 2nd passage portion function that opening portion 43B is connected as the downstream with the 1st passage portion.Opening portion 43B passage diameters ratio
Passage diameters as the through hole 50 of the 1st passage portion are small.Therefore, the boundary member between the 1st passage portion and the 2nd passage portion
It is formed with the step of ring-type.
Then, reference picture 3 and Fig. 4 are illustrated to attenuating member 60.
As shown in Figure 3 and Figure 4, attenuating member 60 possesses the member body 61 of cylindrical form.Member body 61 has：On
End face 62 is swum, it is relative with the ejection section 32A of injection valve 32 with CNG, and positioned at airflow direction X upstream side (in figure
Side)；Downstream end face 63, it is relative with the upstream end 43A of connecting tube 43, and positioned at airflow direction X downstream (under in figure
Side).
It is provided with upstream face 62 with inclined to airflow direction X downstream (downside in figure) close to radially inner side
Upstream oblique face 62A.Summit A1 is set in the center of the radial direction of through hole 50.Upstream oblique face 62A is with from radial outside
End is tilted close to summit A1 to airflow direction X downstream.The end of upstream oblique face 62A radially inner side is located at cover and led
Between the perisporium 421 of formation through hole 50 of body 42 and the axle center of through hole 50.
It is provided with downstream end face 63 with inclined to airflow direction X downstream (downside in figure) close to radially inner side
Downstream inclined plane 63A.Summit A2 is set in the center of the radial direction of through hole 50.Upstream oblique face 62A is with from radial outside
End is tilted close to summit A2 to airflow direction X downstream.The end of downstream inclined plane 63A radially inner side is located at cover and led
Between the perisporium 421 of formation through hole 50 of body 42 and the axle center of through hole 50.The end of downstream inclined plane 63A radially inner side
Portion is configured at the end identical radial position with upstream oblique face 62A radially inner side.
In addition, being provided with the multiple decay paths 65 for being configured at circumferential different positions in attenuating member 60.Along decay
Component 60 it is circumferential to be each configured with multiple decay paths 65 at equal intervals.Multiple decay paths 65 are respectively along through hole 50
Axially (above-below direction in figure) extension.Each decay path 65 respectively upstream face 62 upstream oblique face 62A opening and
The downstream inclined plane 63A openings of downstream end face 63.The opening 651 of the upstream side of decay path 65 is located at upstream oblique face 62A's
Between radial outside end and radially inner side end, specifically positioned at upstream oblique face 62A radial direction substantial middle.Equally
Ground, the opening 652 in the downstream of decay path 65 be located at downstream inclined plane 63A radial outside end and radially inner side end it
Between, specifically positioned at downstream inclined plane 63A radial direction substantial middle.
Then, (a) of reference picture 5 and Fig. 5 (b) with the CNG of injection valve 32 injection using from CNG to making downstream
The effect of the pressure fluctuation decay of CNG in supply passageway is illustrated.
As shown in Fig. 5 (a), the CNG ejected from CNG injection valves 32 is in the upstream oblique along attenuating member 60
After face 62A has flowed, flowed into via opening 651 to decay path 65.Now, the ratio opening 651 with upstream oblique face 62A is leaned on
The CNG that the part of radial outside generates interference is guided by upstream oblique face 62A to opening 651.
On the other hand, with upstream oblique face 62A ratio opening 651 by the partial coherence of radially inner side CNG in upstream
After being flowed on inclined plane 62A to the direction opposite with airflow direction X, flowed into via opening 651 to decay path 65.By such as
This generates the CNG in the direction opposite with airflow direction X flowing, can increase the pressure when CNG is flowed into decay path 65
Power is lost.
As Fig. 5 (b) shown in, the CNG flowed in decay path 65 via downstream inclined plane 63A opening 652 from
Attenuating member 60 flows out.Here, gas is leaned in the edge that the edge of the radial outside of opening 652 is located at the radially inner side than opening 652
Flow the position of direction X upstream side (upside in figure).Therefore, the CNG flowed out from opening 652 major part is radially oriented outside
Flowing.After CNG has flowed on the outside of being radially oriented from opening 652, interfere with the perisporium 421 of cover main body 42, so that CNG stream
Dynamic direction is changed.Energetically interfered with perisporium 421 by the CNG for so making to flow out from opening 652, make CNG flowing
Direction change, so as to increase CNG from decay path 65 flow out when the pressure loss.
Downstream flowings of the CNG interfered with perisporium 421 along perisporium 421 to airflow direction X.But, in cover main body
Coupling part between 42 and connecting tube 43 is formed with step.Therefore, the diameter of path of downstream supply passageway is formed in midway
Narrow.Therefore, the CNG along perisporium 421 to airflow direction X downstream flow passes through after having interfered with above-mentioned step
The opening portion 43B of connecting tube 43.I.e., when the direction of CNG flowing is changed again by step, CNG flowing also produces pressure damage
Lose.
Therefore, even if CNG sprays from CNG injection valves 32, CNG flow velocity is also attenuated component 60 and effectively slowed down.Its
As a result, the pressure fluctuation for the CNG in the supply passageway of downstream that the situation that CNG is intermittently sprayed from CNG injection valves 32 is produced
It is efficiently damped.Thus, the vibration of inlet manifold because caused by from injections of the CNG with the CNG of injection valve 32 interval
It is suppressed.
Even if narrowing in addition, accumulating the passage sections of decay path 65, it can also increase the pressure loss of CNG flowings.
Therefore, it is possible to make the passage sections product of decay path 65 become relatively wide, so that opening 651,652 is not flowed together with CNG
Foreign matters from being blocked.
More than, according to said structure and effect, result in effect as shown below.
(1) downstream inclined plane 63A is provided with the downstream end face 63 of attenuating member 60, decay path 65 is in downstream inclined plane
63A is open.Therefore, CNG in the opening 652 of the downstream inclined plane 63A decay paths 65 formed after flowing out, by direction
The perisporium 421 of cover main body 42 is guided.Then, changed by perisporium 421 in the direction of the CNG flowed out from decay path 65 flowing.
Thus, CNG flowing produces the pressure loss, and CNG flow velocity is slack-off.Thus, by making decay path 65 in downstream inclined plane 63A
Opening, can improve the extinction efficiency of the pressure fluctuation of the CNG in the supply passageway of downstream.
(2) in addition, the CNG flowed out from decay path 65 is after the perisporium 421 along cover main body 42 has flowed, with
The step interference that coupling part between cover main body 42 and connecting tube 43 is formed.Thus, CNG flowing produces further pressure
Loss, CNG flow velocity is further slack-off.Thus, it is possible to enter the extinction efficiency of the pressure fluctuation of the CNG in the supply passageway of downstream
One step is improved.
(3) upstream oblique face 62A is provided with the upstream face 62 of attenuating member 60, decay path 65 is in upstream oblique face
62A is open.Therefore, the CNG ejected from CNG injection valves 32 is along upstream oblique face 62A to opposite with airflow direction X
After the flowing of direction, flowed into in the decay path 65 that upstream oblique face 62A is open.I.e., decay path 65 is flowed into CNG
The flowing of from the CNG to the direction opposite with airflow direction X is generated before opening 651.Thus, the pressure loss increase of CNG flowings.
Thus, it is open by making decay path 65 in upstream oblique face 62A, the pressure fluctuation of the CNG in the supply passageway of downstream can be made
Extinction efficiency improve.
(4) in addition, with by from the end of radial outside closer to summit A1, more it is inclined to airflow direction X upstream side
Upstream oblique face is compared located at the situation of the upstream face 62 of attenuating member 60, and attenuating member 60 can be made to be sprayed close to CNG
Penetrate valve 32.Thus, it is possible to improve the free degree of the position of the attenuating member 60 in the supply passageway of downstream.
(5) attenuating member 60 is configured to, and is flowed out before CNG is flowed into decay path 65 with CNG from decay path 65
Make the pressure loss increase that CNG flows in the case of at least one of afterwards.Thus, even if not making the opening of decay path 65
651st, 652 narrow or the passage diameters itself of decay path 65 is narrowed, and can also make CNG's in the supply passageway of downstream
The extinction efficiency of pressure fluctuation is improved.Therefore, even if foreign matter flows together with CNG, it is also difficult to produce the opening of decay path 65
By foreign matters from being blocked.Thus, it is possible to suppress the reduction of the CNG efficiency of supply, while making the pressure arteries and veins of the CNG in the supply passageway of downstream
Dynamic extinction efficiency is improved.
(the 2nd embodiment)
Then, the 2nd embodiment of the supply passageway construction of the gaseous fuel of the present invention is illustrated according to Fig. 6.2nd
The shape of the upstream face 62 of the attenuating member 60 of embodiment and the difference of the 1st embodiment.Thus, in the following description
In, the main explanation part different from the 1st embodiment, pair element structure same or equivalent with the 1st embodiment mark phase
Same reference, the description thereof will be omitted.
As shown in fig. 6, the upstream face 62 of attenuating member 60 has the 1st inclined plane 62B and the 2nd inclined plane 62C.1st inclines
Inclined-plane 62B is located at the position that radial outside is leaned on than the 2nd inclined plane 62C.Incline with the 2nd the end of 1st inclined plane 62B radially inner side
The end connection of inclined-plane 62C radial outside.1st inclined plane 62B is with close radially inner side to airflow direction X upstream side
(upside in figure) is tilted.2nd inclined plane 62C inclines with close to radially inner side to airflow direction X downstream (downside in figure)
Tiltedly.Coupling part opening of each decay path 65 between the 1st inclined plane 62B and the 2nd inclined plane 62C.
Then, the CNG that 6 pairs of reference picture is ejected from CNG injection valves 32 flowed into decay path 65 when work
With illustrating.
As shown in fig. 6, the CNG ejected from CNG injection valves 32 a part is interfered with the 1st inclined plane 62B
Afterwards, flowed into via opening 651 into decay path 65.In addition, remaining CNG at least a portion with the 2nd inclined plane 62C
After having interfered, flowed into via opening 651 into decay path 65.
Flowed with the CNG that the 1st inclined plane 62B has interfered on the 1st inclined plane 62B to the direction opposite with airflow direction X
Afterwards, flowed into via opening 651 into decay path 65.By the stream for the CNG for so generating the direction opposite with airflow direction X
It is dynamic, the pressure loss when CNG is flowed into decay path 65 can be increased.
Similarly, the CNG interfered with the 2nd inclined plane 62C is on the 2nd inclined plane 62C to the side opposite with airflow direction X
To after flowing, flowed into via opening 651 into decay path 65.By so generating the direction opposite with airflow direction X
CNG flowing, can increase the pressure loss when CNG is flowed into decay path 65.
More than, according to the 2nd embodiment, except effect with the effect (1), (2) and (6) of the 1st embodiment is equal
Outside effect, additionally it is possible to obtain effect as shown below.
(7) the 1st inclined plane 62B and the 2nd inclined plane 62C, decay path 65 are provided with the upstream face 62 of attenuating member 60
Coupling part opening between the 1st inclined plane 62B and the 2nd inclined plane 62C.Therefore, it is possible to the opening to decay path 65 in CNG
The CNG in the generation direction opposite with airflow direction X flowing before mouth 651 is flowed into.As a result, before CNG is flowed into opening 651
The pressure loss increase of CNG flowings.Thus, it is possible to improve the extinction efficiency of the pressure fluctuation of the CNG in the supply passageway of downstream.
The respective embodiments described above can also be changed as described below.
In each embodiment, located at the quantity of the decay path 65 of attenuating member 60 both can be 1 or
It is multiple.
In each embodiment, the radial position of multiple decay paths 65 can not also be all identical.
In the 1st embodiment or, as long as attenuating member 60 upstream face 62 be provided with upstream oblique face
62A, decay path 65 are open in upstream oblique face 62A, just can also be as shown in Figure 7 in the downstream end face of attenuating member 60
63 are not provided with downstream inclined plane 63A.In this case, the effect equal with the effect of above-mentioned (3)~(5) is also resulted in.
In the 1st embodiment, as long as the position of the end of upstream oblique face 62A ratio radial outside in the inner part,
Just can also be by summit A1 located at the position in addition to the radial center of through hole 50.In this case, also by making upstream
Inclined plane 62A with from the end of radial outside close to downstream from summit A1 to airflow direction X tilt, result in it is upper
State the equal effect of the effect of (3)~(5).Alternatively, it is also possible to which summit A1 to be set in the radial position in addition to the A2 of summit.
In the 2nd embodiment, as long as the upstream face 62 in attenuating member 60 is inclined provided with the 1st inclined plane 62B and the 2nd
Inclined-plane 62C, coupling part opening of the decay path 65 between the 1st inclined plane 62B and the 2nd inclined plane 62C can also just decline
The downstream end face 63 for subtracting component 60 is not provided with downstream inclined plane 63A.In this case, also result in and above-mentioned (6) and (5)
The equal effect of effect.
Can also be, as long as the shape located at the upstream oblique face of the upstream face 62 of attenuating member 60 is with from footpath
The shape that end laterally is gradually changed close to summit A1 and airflow direction X position, can also be just arbitrary shape.
For example, as shown in Figure 8 or, set in upstream face 62 with close to radially inner side to air-flow side
To the inclined upstream oblique face 62A1 in X upstream side.In the example shown in Fig. 8, summit A1 is set in the footpath of through hole 50
To center, upstream oblique face 62A1 with close to summit A1 and to airflow direction X upstream side tilt.As long as in addition, on
Summit A1, can also just be located at except through hole 50 by the position of the end of trip inclined plane 62A1 ratio radial outside in the inner part
Position beyond radial center, make upstream oblique face 62A1 with from the end of radial outside close to summit A1 to airflow direction
X upstream side is tilted.
In this case, the CNG ejected from CNG injection valves 32 is in the upstream oblique along upstream face 62
After face 62A1 has flowed, flowed into via opening 651 into decay path 65.Now, with upstream oblique face 62A1 ratio opening
651 lean on the CNG of the partial coherence of radially inner side to be guided by upstream oblique face 62A1 to opening 651.On the other hand, incline with upstream
Inclined-plane 62A1 ratio opening 651 by the partial coherence of radial outside CNG on the 62A1 of upstream oblique face to airflow direction X
After opposite direction flowing, flowed into via opening 651 into decay path 65.It is opposite with airflow direction X by so generating
Direction CNG flowing, the pressure loss when CNG is flowed into decay path 65 can be increased.Thus, it is possible to obtain with
The equal effect of the effect of above-mentioned (3).
, both can be under attenuating member 60 in the case where such upstream oblique face 62A1 is located at into upstream face 62
Swim end face 63 and be provided with downstream inclined plane, downstream inclined plane can not also be set in the downstream end face 63 of attenuating member 60.
In the 1st embodiment, as long as the downstream end face 63 in attenuating member 60 is provided with downstream inclined plane 63A, decay
Path 65 is open in downstream inclined plane 63A, can not also just be set as shown in Figure 9 in the upstream face 62 of attenuating member 60
Upstream oblique face 62A.In this case, the effect equal with the effect of above-mentioned (1) and (5) is also resulted in.
In each embodiment, as long as the position of the end of downstream inclined plane 63A ratio radial outside in the inner part, just
Can also be by summit A2 located at the position in addition to the radial center of through hole 50.In this case, also by making downstream incline
Inclined-plane 63A with from the end of radial outside close to downstream from summit A2 to airflow direction X tilt, result in it is above-mentioned
(1) and (5) the equal effect of effect.
As shown in Figure 10 or, downstream end face 63 be provided with close to radially inner side and to airflow direction X's
Upstream side (top in figure) inclined downstream inclined plane 63A1, makes each decay path 65 be open in downstream inclined plane 63A1.In figure
In example shown in 10, summit A2 is set in the radial center of through hole 50, and downstream inclined plane 63A1 is with from radial outside
End close to upstream side from summit A2 to airflow direction X tilt.As long as downstream inclined plane 63A1 ratio radial outside
The position of end in the inner part, just can also make upstream by summit A2 located at the position in addition to the radial center of through hole 50
Inclined plane 62A1 is tilted with from the end of radial outside close to summit A2 to airflow direction X upstream side.
In this case, the edge of the radially inner side of the opening 652 of each decay path 65 is located at the edge than radial outside
By the position of airflow direction X upstream side (upside in figure).Therefore, the CNG's flowed out from each opening 652 is most of towards footpath
Inside side flowing.So, CNG interfere with each other, converge after being flowed from each opening 652 to radially inner side and to airflow direction
X downstream flowing.So, by make each decay path 65 flow CNG just from it is each opening 652 flow out after
Interference is produced, CNG flowing produces the pressure loss, and CNG flow velocity is slack-off.Thus, by setting Figure 10 institutes in downstream end face 63
Show such downstream inclined plane 63A1, can improve the extinction efficiency of the pressure fluctuation of the CNG in the supply passageway of downstream.
In the case where downstream inclined plane 63A1 is located at into downstream end face 63, by different in " 180 ° " with circumferential position
Mode set it is multiple opening 652, can make CNG just from each decay path 65 flow out after the pressure loss increase.Separately
Outside, in this case, upstream oblique face 62A, 62A1 can also be set in the upstream face 62 of attenuating member 60, can both sets
Both 1st inclined plane 62B and the 2nd inclined plane 62C, can also be not provided with inclined plane.
It can also be set to, make upstream oblique face 62A, 62A1 airflow direction X position with from radial outside
End is close to summit A1 without constant gradient, and gradient changes at leisure.
It can also be set to, make the airflow direction X position of downstream inclined plane 63A, 63A1 with from radial outside
End is close to summit A2 without constant gradient, and gradient changes at leisure.
As long as attenuating member 60 is in the supply passageway of downstream, can also just be configured at the inside except cover main body 42 with
Outer position.Such as attenuating member 60 can also be configured in fuel hose 37.
Attenuating member 60 can be also used for the supply passageway that the gaseous fuels such as hydrogen are supplied to fuel cell.In the feelings
Under condition, attenuating member 60 also is set in the downstream of the injection valve of gas injection fuel.
The injection valve for being not limited to illustrate in the respective embodiments described above located at the valve of supply passageway.It as long as is located at
Supply passageway changes the valve of the supply form of gaseous fuel, can also just use arbitrary valve.
Claims (8)
1. a kind of supply passageway construction of gaseous fuel, it possesses：The supply passageway of gaseous fuelled；Valve, it is located at described
Supply passageway, changes the supply form of gaseous fuel；Attenuating member, it is configured at valve described in the ratio of the supply passageway downstream
The part of side is downstream supply passageway, and the direction that gaseous fuel flows in the downstream supply passageway is being set into airflow direction
In the case of, the attenuating member has：Upstream face, it is located at the upstream side of the airflow direction；Downstream end face, it is located at
The downstream of the airflow direction；Decay path, it is open in both the upstream face and the downstream end face, the gas
The supply passageway of fuel is constructed and is characterised by,
At least one of the upstream face and the downstream end face have the position of the airflow direction with close summit
The inclined plane gradually changed is put, the decay path is in the inclined plane opening.
2. the supply passageway construction of gaseous fuel according to claim 1, wherein,
The downstream end face has the inclined plane,
Position of the vertex in the end of the ratio radial outside of the downstream end face in the inner part,
The inclined plane is rolled with from the end of the radial outside close to the summit to the downstream of the airflow direction
Tiltedly.
3. the supply passageway construction of gaseous fuel according to claim 2, wherein,
The downstream supply passageway has the 1st passage portion where the attenuating member and the downstream with the 1st passage portion
2nd passage portion of connection,
The passage diameters of 2nd passage portion are smaller than the passage diameters of the 1st passage portion.
4. the supply passageway construction of gaseous fuel according to claim 1, wherein,
The multiple decay paths for being configured at circumferential different positions are provided with the attenuating member,
The downstream end face has the inclined plane,
Position of the vertex in the end of the ratio radial outside of the downstream end face in the inner part,
The inclined plane with from the end of the radial outside close to the summit towards the upstream side of the airflow direction
Tilt.
5. constructed according to the supply passageway of gaseous fuel according to any one of claims 1 to 4, wherein,
The upstream face has the inclined plane,
Position of the vertex in the end of the ratio radial outside of the upstream face in the inner part,
The inclined plane is rolled with from the end of the radial outside close to the summit to the downstream of the airflow direction
Tiltedly.
6. constructed according to the supply passageway of gaseous fuel according to any one of claims 1 to 4, wherein,
The upstream face has the inclined plane,
Position of the vertex in the end of the ratio radial outside of the upstream face in the inner part,
The inclined plane is rolled with from the end of the radial outside close to the summit to the upstream of the airflow direction
Tiltedly.
7. constructed according to the supply passageway of gaseous fuel according to any one of claims 1 to 6, wherein,
The valve is the injection valve of gas injection fuel.
8. a kind of supply passageway construction of gaseous fuel, it possesses：The supply passageway of gaseous fuelled；Valve, it is located at described
Supply passageway, changes the supply form of gaseous fuel；Attenuating member, it is configured at valve described in the ratio of the supply passageway downstream
The part of side is downstream supply passageway, and the direction that gaseous fuel flows in the downstream supply passageway is being set into airflow direction
In the case of, the attenuating member has：Upstream face, it is located at the upstream side of the airflow direction；Downstream end face, it is located at
The downstream of the airflow direction；And decay path, it is open in both the upstream face and the downstream end face, should
The supply passageway of gaseous fuel is constructed and is characterised by,
The upstream face has：1st inclined plane, it is rolled with close to radially inner side to the upstream of the airflow direction
Tiltedly；2nd inclined plane, it is connected with the end of the radially inner side of the 1st inclined plane, with close radially inner side to the gas
The downstream for flowing direction is tilted,
In the upstream face, the decay path is separated in the 1st inclined plane and the connecting portion between the 2nd inclined plane
Mouthful.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-058417 | 2015-03-20 | ||
| JP2015058417A JP6411260B2 (en) | 2015-03-20 | 2015-03-20 | Gas fuel supply passage structure |
| PCT/JP2016/055848 WO2016152383A1 (en) | 2015-03-20 | 2016-02-26 | Supply passage structure of gaseous fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107250520A true CN107250520A (en) | 2017-10-13 |
Family
ID=56979125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680011264.4A Withdrawn CN107250520A (en) | 2015-03-20 | 2016-02-26 | The supply passageway construction of gaseous fuel |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6411260B2 (en) |
| CN (1) | CN107250520A (en) |
| WO (1) | WO2016152383A1 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5917088A (en) * | 1982-07-21 | 1984-01-28 | 株式会社日立製作所 | Decompressing orifice |
| JPS6397796U (en) * | 1986-12-16 | 1988-06-24 | ||
| JPS63164678U (en) * | 1987-04-17 | 1988-10-26 | ||
| DE4112853A1 (en) * | 1991-04-19 | 1992-10-22 | Bosch Gmbh Robert | METHOD FOR ADJUSTING A DEVICE AND DEVICE |
| JPH06241145A (en) * | 1993-02-19 | 1994-08-30 | Ishima Riyuutai Kenkyusho:Kk | Fuel injection method and device for combustor |
| JPH06300179A (en) * | 1993-04-14 | 1994-10-28 | Hitachi Zosen Corp | Pipe line structure |
| DE4415992A1 (en) * | 1994-05-06 | 1995-11-09 | Bosch Gmbh Robert | Fuel injector |
| JPH08261097A (en) * | 1995-03-24 | 1996-10-08 | Toyoda Gosei Co Ltd | Fuel pressure pulsation damper |
| US7942132B2 (en) * | 2008-07-17 | 2011-05-17 | Robert Bosch Gmbh | In-line noise filtering device for fuel system |
| JP5266125B2 (en) * | 2009-03-30 | 2013-08-21 | 株式会社ケーヒン | Gas fuel injection valve |
-
2015
- 2015-03-20 JP JP2015058417A patent/JP6411260B2/en active Active
-
2016
- 2016-02-26 WO PCT/JP2016/055848 patent/WO2016152383A1/en active Application Filing
- 2016-02-26 CN CN201680011264.4A patent/CN107250520A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016176438A (en) | 2016-10-06 |
| JP6411260B2 (en) | 2018-10-24 |
| WO2016152383A1 (en) | 2016-09-29 |
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Application publication date: 20171013 |