CN105298706B - The needle valve assembly of fuel injection equipment (FIE) - Google Patents
The needle valve assembly of fuel injection equipment (FIE) Download PDFInfo
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- CN105298706B CN105298706B CN201410324813.6A CN201410324813A CN105298706B CN 105298706 B CN105298706 B CN 105298706B CN 201410324813 A CN201410324813 A CN 201410324813A CN 105298706 B CN105298706 B CN 105298706B
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Abstract
Valve body end is provided with the first sealing surface in the needle valve assembly of fuel injection equipment (FIE)（142）, the second sealing surface（144）And the 3rd sealing surface（146）.Nozzle opening includes first group of nozzle opening（181）With second group of nozzle opening（182）, second jet angle of first jet angle less than second group of nozzle opening of first group of nozzle opening.Needle-valve includes the primary sealing area in sealing contact in the first sealing surface（26）, the secondary sealing area in sealing contact in the second sealing surface（28）And the 3rd sealing surface in sealing contact in the 3rd sealing surface（29）.If the fuel oil that needle valve assembly is in the first jet segment, oil inlet passage can spray from first group of spray-hole.If the fuel oil that needle valve assembly is in the second jet segment, oil inlet passage sprays from first group of spray-hole and second group of nozzle opening simultaneously.The needle valve assembly of fuel injection equipment (FIE), is suitable for the air-fuel mixture situation of different load condition, takes into account the control to fuel consumption and pollutant emission under different situations.
Description
Technical field
The present invention relates to the needle valve assembly of fuel injection equipment (FIE), particularly for internal combustion engine fuel injection equipment (FIE) needle-valve
Component.
Background technology
Diesel engine traditional combustion is high-temp combustion HTC（High Temperature Combustion）Pattern, pole is beneficial to
NOx and PM generation, and obvious opposite variation relation is presented with PM in NOx, it is to improve that NOx and PM discharges how are reduced simultaneously
The emphasis of diesel emission.
Partial pre-mix charge compression-ignition burning PCCI（Premixed Charge Compression Ignition）
Allow the presence of denseer gaseous mixture region in cylinder, as long as the fuel to air equivalence ratio in rich mixture area is less than 2, it is possible to avoid tail gas
Carbon particle（soot）Formation zone is discharged, certain this combustion system will also ensure that maximum combustion temperature is no more than 2200K, to keep away
Open NOx formation zone.In ignition temperature about 1600K, no matter how dense gaseous mixture have, and NOx and Soot life can be avoided substantially
Into.
PCCI combustion mode can be realized by early injection, but with the increase of engine load, premixed gas exists in cylinder
The advanced combustion of compression travel, causes NOx emission to rise, at the same time, and combustion phase causes efficiency of combustion to reduce in advance.Cause
This, engine uses traditional combustion pattern under high load working condition, to obtain than more preferable fuel-economy under PCCI combustion mode
Property and discharge performance.
Fig. 1 show a kind of structural representation of the needle valve assembly of common fuel injection equipment (FIE), as illustrated, needle-valve group
Part includes valve body 60 and needle-valve 70.Valve body 60 is provided with the valve opening 62 opened up along its axial direction, and oil inlet passage 64 is communicated with valve opening 62, valve
The end 68 of body 60 offers a plurality of nozzle openings 66 communicated with valve opening 62, and fuel oil can flow into valve opening 62 from oil inlet passage 64,
And the space between valve opening 62 and needle-valve 70 flows to the end of needle-valve 70.Needle-valve 70 is moved back and forth in valve opening 62, by pin
The end of valve 70 and the cooperation of nozzle opening 66, open or close nozzle opening, so as to control injection of the fuel oil into cylinder.Generally definition
" jet angle " of fuel oil is the angle of the axis of nozzle opening 66 and the axis of needle-valve 70.But this fuel injection equipment (FIE) can not meet difference
Combustion mode under air-fuel mixture situation, lead to not take into account the control to fuel consumption and pollutant emission under different situations
System, and need axial direction and end between needle-valve and valve opening that there is very high fit precision.
The content of the invention
It is an object of the invention to provide a kind of needle valve assembly of fuel injection equipment (FIE), to adapt to the oil gas of different load condition
Troubled water, takes into account the control to fuel consumption and pollutant emission under different situations, and this needle valve assembly is simple in construction, add
Work is convenient.
The invention provides a kind of needle valve assembly of fuel injection equipment (FIE), including a valve body and a needle-valve.Valve body is set
There is a valve opening, the oil inlet passage that is communicated with valve opening, and a plurality of nozzle openings communicated with valve opening.Needle-valve can be in valve opening
It is interior to move back and forth.Valve body has the valve body end of a closing.Valve opening is adjacent to valve body end provided with the first sealing surface, a company
The second sealing surface for being connected to the first sealing surface and the 3rd sealing surface for being connected to the second sealing surface, and in the extension of valve opening
On direction, the spacing of the 3rd sealing surface, the second sealing surface and the first sealing surface and valve body end increases successively.Nozzle opening includes setting
In the first group of nozzle opening and second group of nozzle opening for being arranged at the 3rd sealing surface, the first of first group of nozzle opening of the first sealing surface
Jet angle is less than the second jet angle of second group of nozzle opening, and the fuel oil injection direction and second group of nozzle opening of first group of nozzle opening
Fuel oil injection direction it is non-intersect.Needle-valve being capable of primary sealing area, the energy in sealing contact in the first sealing surface including one
It is enough in sealing contact in sealing contact to be sealed in the secondary sealing area of the second sealing surface and one in the 3rd of the 3rd sealing surface
Face.The stroke of needle-valve is provided with first jet segment and second jet segment.If needle valve assembly is in the first jet segment, first
Sealing surface and primary sealing area are disengaged, and the second sealing surface and secondary sealing area keep in sealing contact, the combustion in oil inlet passage
Oil can spray from first group of spray-hole.If needle valve assembly is in the second jet segment, the first sealing surface and primary sealing area, second
Sealing surface and secondary sealing area and the 3rd sealing surface and the 3rd sealing surface are disengaged, and the fuel oil in oil inlet passage is simultaneously
Sprayed from first group of spray-hole and second group of nozzle opening.
In another schematical embodiment of the needle valve assembly of fuel injection equipment (FIE), valve opening is additionally provided with a connection
In the 4th sealing surface of the 3rd sealing surface, and on the bearing of trend of valve opening, the 4th sealing surface, the 3rd sealing surface, the second sealing-in
Face and the first sealing surface and the spacing at valve body end increase successively.Nozzle opening also includes the 3rd group of spray for being arranged at the 4th sealing surface
Oilhole, the 3rd jet angle of the 3rd group of nozzle opening is more than the second jet angle of second group of nozzle opening, and the combustion of first group of nozzle opening
The fuel oil injection direction in oil spurts direction, the fuel oil injection direction of second group of nozzle opening and the 3rd group of nozzle opening mutually disjoints.
Needle-valve include one can the 4th sealing surface in sealing contact in the 4th sealing surface, and the stroke of needle-valve is additionally provided with the 3rd spray
Penetrate section.If needle valve assembly is in the second jet segment, the first sealing surface and primary sealing area, the second sealing surface and secondary sealing area,
And the 3rd sealing surface and the 3rd sealing surface disengage, and the 4th sealing surface and the 4th sealing surface keep in sealing contact, enter
Fuel oil in oily passage sprays from first group of spray-hole and second group of nozzle opening simultaneously.If needle valve assembly is in the 3rd injection
Section, the first sealing surface and primary sealing area, the second sealing surface and secondary sealing area, the 3rd sealing surface and the 3rd sealing surface and
4th sealing surface is disengaged with the 4th sealing surface, and the fuel oil in oil inlet passage is simultaneously from first group of spray-hole, second group of spray
Sprayed in oilhole and the 3rd group of nozzle opening.
It is the first sealing surface, first close in another schematical embodiment of the needle valve assembly of fuel injection equipment (FIE)
Front cover, the 3rd sealing surface and the 3rd sealing surface are taper surface, and the second sealing surface, secondary sealing area, the 4th sealing surface and the
Four sealing surfaces are cylindroid.
In another schematical embodiment of the needle valve assembly of fuel injection equipment (FIE), valve opening is provided with one and oil-feed
The annular shoe cream room of the connection of passage.
In another schematical embodiment of the needle valve assembly of fuel injection equipment (FIE), valve body include base and
Tight cap of oil nozzle.Base one end is provided with valve body end, and at least part valve opening is arranged at base.Tight cap of oil nozzle is located on base.
Brief description of the drawings
The following drawings only does schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1 is used to illustrate a kind of common needle valve assembly.
Fig. 2 is used for the structural representation for illustrating a kind of exemplary embodiment of the needle valve assembly of fuel injection equipment (FIE).
Fig. 3 is schematic cross-sectional view of the needle valve assembly along 60 ° of its axial-rotation in Fig. 2.
Fig. 4 shows the valve body of needle valve assembly in Fig. 2.
Fig. 5 to Fig. 7 is used for the state change for illustrating the needle valve assembly of Fig. 2 intermediate fuel oil injection apparatus.
Fig. 8 is used for the structural representation for illustrating another exemplary embodiment of the needle valve assembly of fuel injection equipment (FIE).
Fig. 9 to Figure 12 is used for the state change for illustrating the needle valve assembly of Fig. 8 intermediate fuel oil injection apparatus.
Label declaration
10 valve bodies
11 bases
12 valve body ends
13 tight cap of oil nozzle
14 valve openings
142 first sealing surfaces
144 second sealing surfaces
146 the 3rd sealing surfaces
148 the 4th sealing surfaces
16 oil inlet passages
18 nozzle openings
181 first groups of nozzle openings
182 second groups of nozzle openings
183 the 3rd groups of nozzle openings
19 annular shoe cream rooms
20 needle-valves
26 primary sealing areas
28 secondary sealing areas
27 the 4th sealing surfaces
29 the 3rd sealing surfaces.
Embodiment
In order to be more clearly understood to the technical characteristic of invention, purpose and effect, now control brief description of the drawings is of the invention
Embodiment, in the various figures identical label represent identical part.
Herein, " schematic " expression " serving as example, example or explanation ", will should not be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical scheme.
To make only to schematically show part related to the present invention in simplified form, each figure, their not generations
Table its as product practical structures.In addition, so that simplified form is readily appreciated, there is identical structure or function in some figures
Part, only symbolically depict one of those, or only marked one of those.
Herein, " one " not only represents " only this ", can also represent the situation of " more than one ".
" connect " the direct connection that can have both represented between the two herein, may also indicate that by between the third party in succession
It is logical.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than represent their significance level and suitable
Sequence and the premise that exists each other etc..
Fig. 2 is used for the structural representation for illustrating a kind of exemplary embodiment of the needle valve assembly of fuel injection equipment (FIE).Fig. 3
It is schematic cross-sectional view of the needle valve assembly along its axial 90 ° of rotate counterclockwise in Fig. 2.Fig. 4 shows the valve of needle valve assembly in Fig. 2
Body, and the valve bodies that show of Fig. 4 be along along Fig. 2 A to.Referring to Fig. 2, Fig. 3 and Fig. 4, the needle valve assembly of fuel injection equipment (FIE) includes one
Individual valve body 10 and a needle-valve 20.
Wherein, valve body 10 is provided with valve body end 12, a valve opening 14, an oil inlet passage 16 and the multiple oil spouts of a closing
Hole 18.Valve opening 14 is communicated with oil inlet passage 16, and nozzle opening 18 is communicated with valve opening 14.Fuel oil enters valve opening via oil inlet passage 16
In 14, under the control of needle-valve 20, fuel oil is sprayed by nozzle opening 18.Valve opening 14 is neighbouring to be provided with first sealing-in with valve body end 12
Face 142, the second sealing surface 144 and the 3rd sealing surface 146.Second sealing surface 144 is connected to the first sealing surface 142,
3rd sealing surface 146 is connected to the second sealing surface 144.On the bearing of trend of valve opening 14, the first sealing surface 142, the second sealing-in
In the sealing surface 146 of face 144 and the 3rd, spacing of the 3rd sealing surface 146 apart from valve body end 12 is nearest, the distance of the first sealing surface 142
The spacing at valve body end 12 is farthest, and spacing of second sealing surface 144 apart from valve body end 12 is placed in the middle.
Nozzle opening 18 includes first group of nozzle opening 181 for being arranged at the first sealing surface 142, and is arranged at the 3rd sealing surface
146 second group of nozzle opening 182.First jet angle α of first group of nozzle opening 181 is less than the second spray of second group of nozzle opening 182
Firing angle β.The fuel oil injection direction of the fuel oil injection direction of first group of nozzle opening 181 and second group of nozzle opening 182 is non-intersect, i.e., and
When one group of nozzle opening 181 and second group of nozzle opening 182 spray fuel oil simultaneously, the fuel oil that they are ejected will not intersect.Referring to figure
4, the line between two first group of nozzle openings 181, the angle of the line between two second group of nozzle openings 182 is 90 °, by
This realizes that the fuel oil injection direction of the fuel oil injection direction and second group of nozzle opening 182 of first group of nozzle opening 181 is non-intersect.
Needle-valve 20 includes a primary sealing area 26, a secondary sealing area 28 and the 3rd sealing surface 29.Second is close
Front cover 29 is connected to primary sealing area 26, and the 3rd sealing surface 29 is connected to secondary sealing area 28.First sealing surface 142 can be with
One sealing surface 26 is in sealing contact so that fuel oil can not spray from first group of nozzle opening 181.Second sealing surface 144 can be with second
Sealing surface 28 is in sealing contact so that fuel oil can not flow to by the gap between the second sealing surface 144 and secondary sealing area 28
Two groups of nozzle openings 182.3rd sealing surface 146 can be in sealing contact with the 3rd sealing surface 29 so that fuel oil can not be from second group of spray
Oilhole 182 sprays.
Fig. 5 to Fig. 7 is used for the state change for illustrating the needle valve assembly of Fig. 2 intermediate fuel oil injection apparatus, in order to clearly illustrate
The oil spout order of each nozzle opening, each view is the echelon sectional view of B-B lines along along Fig. 4.Referring to Fig. 5 and Fig. 2, now first
Sealing surface 142 is in sealing contact in primary sealing area 26, and the second sealing surface 144 is in sealing contact in secondary sealing area 28, and the 3rd envelope
Junction 146 is in sealing contact in the 3rd sealing surface 29.First group of nozzle opening 181 of the first sealing surface 142 is arranged at by the first sealing
Face 26 is sealed and can not spray fuel oil, and second group of nozzle opening 182 for being arranged at the 3rd sealing surface 146 is sealed by the 3rd sealing surface 29
And can not spray.
When the load of diesel engine is smaller, for example diesel engine is under pre-mixed mode, referring to Fig. 6 and Fig. 2, the court of needle-valve 20
Move in direction away from valve body end 12.Now, needle-valve is in the first jet segment of its stroke.First sealing surface 142 and first close
Front cover 26 is disengaged, and the 3rd sealing surface 146 is disengaged with the 3rd sealing surface 29, and the second sealing surface 144 and the second sealing
Face 28 is still in sealing contact.Fuel oil in valve opening 14 can be sprayed by first group of nozzle opening 181, but due to the second sealing-in
Face 144 is still in sealing contact with secondary sealing area 28, then can not be by between the second sealing surface 144 and secondary sealing area 28
Gap flows to second group of nozzle opening 182 so that second group of nozzle opening 182 sprays without fuel oil.Now utilize first group of nozzle opening 181
Oil spout, can prevent fuel oil to be rebuffed and cause lubricating oil dilution, and improve air-fuel mixture quality in diesel engine, improve diesel engine
Burning and discharge performance.
When the load increase of diesel engine, referring to Fig. 7 and Fig. 2, needle-valve 20 continues to move towards the direction away from valve body end 12.
Now, needle-valve is in the second jet segment of its stroke.First sealing surface 142 is disengaged with primary sealing area 26, the 3rd sealing-in
Face 146 is disengaged with the 3rd sealing surface 29, and the second sealing surface 144 is disengaged with secondary sealing area 28.In valve opening 14
In fuel oil can be sprayed by first group of nozzle opening 181, and fuel oil passes through between the second sealing surface 144 and secondary sealing area 28
Gap flow to second group of nozzle opening 182 so that second group of nozzle opening 182 sprays fuel oil simultaneously, it is possible thereby to increase oily beam with
Air contact area, promotes the broken and evaporation of oily beam, improves air-fuel mixture quality, while the injection duration can be shortened, it is excellent
Change combustion phase, improve fuel thermal efficiency.
Fig. 8 is used for the structural representation for illustrating another exemplary embodiment of the needle valve assembly of fuel injection equipment (FIE),
Fig. 8 and Fig. 2 and Fig. 3 identical structures will not be repeated here.Referring to Fig. 8 and Fig. 2, valve opening 14 is additionally provided with the 4th sealing surface
148.4th sealing surface 148 is connected to the 3rd sealing surface 146.Along along the bearing of trend of valve opening 14, the 4th sealing surface the 148, the 3rd
Sealing surface 146, the second sealing surface 144 and the first sealing surface 142 and the spacing at valve body end 12 increase successively.
Nozzle opening 18 includes the 3rd group of nozzle opening 183 for being arranged at the 4th sealing surface 148.The of 3rd group of nozzle opening 183
Three jet angle γ are more than the second jet angle β of second group of nozzle opening 182.Needle-valve 20 can be in sealing contact in the 4th envelope including one
4th sealing surface 27 of junction 148.The fuel oil injection direction of first group of nozzle opening 181, the fuel oil of second group of nozzle opening 182 spray
Direction, mutually disjoint with the fuel oil injection direction of the 3rd group of nozzle opening 183, i.e., first group nozzle opening 181, second group of nozzle opening
182 and the 3rd group of nozzle opening 183 when spraying fuel oil simultaneously, the fuel oil that they are ejected will not intersect.First group of nozzle opening,
The position of two groups of nozzle openings and the 3rd group of nozzle opening refers to the mode shown in Fig. 4 to avoid the then intersecting of their ejections.
Fig. 9 to Figure 12 is used for the state change for illustrating the needle valve assembly of Fig. 8 intermediate fuel oil injection apparatus, in order to clearly illustrate
The oil spout order of each nozzle opening, each view employs the echelon sectional view to Fig. 7 similar to Fig. 5.Referring to Fig. 9 and Fig. 2, now
First sealing surface 142 is in sealing contact in primary sealing area 26, and the second sealing surface 144 is in sealing contact in secondary sealing area 28, the 3rd
Sealing surface 146 is in sealing contact in the 3rd sealing surface 29, and the 4th sealing surface 148 is in sealing contact in the 4th sealing surface 27.It is arranged at
First group of nozzle opening 181 of the first sealing surface 142 is sealed by primary sealing area 26 and can not spray fuel oil, is arranged at the 3rd sealing-in
Second group of nozzle opening 182 in face 146 is sealed and can not be sprayed by the 3rd sealing surface 29, and is arranged at the of the 4th sealing surface 148
Three groups of nozzle openings 183 are sealed and can not be sprayed by the 4th sealing surfaces 27.
When the load of diesel engine is smaller, for example diesel engine is under pre-mixed mode, referring to Figure 10 and Fig. 2, needle-valve 20
Moved towards the direction away from valve body end 12.Now, needle-valve is in the first jet segment of its stroke.First sealing surface 142 and first
Sealing surface 26 is disengaged, and the 3rd sealing surface 146 is disengaged with the 3rd sealing surface 29, and the second sealing surface 144 and second close
Front cover 28 is still in sealing contact, and the 4th sealing surface 148 and the 4th sealing surface 27 are still in sealing contact.Fuel oil in valve opening 14
It can be sprayed by first group of nozzle opening 181, but because the second sealing surface 144 and secondary sealing area 28 are still in sealing contact, combustion
Oil can not flow to second group of nozzle opening 182 and the 3rd group of spray by the gap between the second sealing surface 144 and secondary sealing area 28
Oilhole 183 so that second group of nozzle opening 182 and the 3rd group of nozzle opening 183 spray without fuel oil.
When diesel engine is in medium load, referring to Figure 11 and Fig. 2, needle-valve 20 is moved towards the direction away from valve body end 12.
Now, needle-valve is in the second jet segment of its stroke.First sealing surface 142 is disengaged with primary sealing area 26, the 3rd sealing-in
Face 146 is disengaged with the 3rd sealing surface 29, and the second sealing surface 144 is disengaged with secondary sealing area 28, and the 4th sealing surface
148 is in sealing contact with the 4th sealing surface 27.Fuel oil in valve opening 14 can be sprayed by first group of nozzle opening 181, and combustion
Oil flows to second group of nozzle opening 182 by the gap between the second sealing surface 144 and secondary sealing area 28 so that second group of oil spout
Fuel oil is sprayed simultaneously in hole 182.Because the 4th sealing surface 148 and the 4th sealing surface 27 are still in sealing contact, the 3rd group of nozzle opening 183
Sealed by the 4th sealing surface 27 so that the 3rd group of nozzle opening 183 sprays without fuel oil.
When diesel engine is in high capacity, referring to Figure 12 and Fig. 2, needle-valve 20 is moved towards the direction away from valve body end 12.This
When, needle-valve is in the 3rd jet segment of its stroke.First sealing surface 142 is disengaged with primary sealing area 26, the 3rd sealing surface
146 are disengaged with the 3rd sealing surface 29, and the second sealing surface 144 is disengaged with secondary sealing area 28, and the 4th sealing surface 148
Disengaged with the 4th sealing surface 27.Fuel oil in valve opening 14 can be sprayed by first group of nozzle opening 181, and fuel oil is logical
The gap crossed between the second sealing surface 144 and secondary sealing area 28 flows to second group of nozzle opening 182 and the 3rd group of nozzle opening 183,
So that second group of nozzle opening 182 and the 3rd group of nozzle opening 183 spray fuel oil simultaneously.
Referring to Fig. 2 and Fig. 3, in a kind of exemplary embodiment of needle valve assembly of fuel injection equipment (FIE), the first sealing surface
142nd, primary sealing area 26, the 3rd sealing surface 146 and the 3rd sealing surface 29 are taper surface.Second sealing surface 144, second is sealed
Face 28, the 4th sealing surface 148 and the 4th sealing surface 27 are cylindroid.
Referring to Fig. 8, in a kind of exemplary embodiment of needle valve assembly of fuel injection equipment (FIE), valve opening 14 provided with one with
The annular shoe cream room 19 of the connection of oil inlet passage 16, so that the injection fuel oil that each nozzle opening can be stablized.
Referring to Fig. 8 and Fig. 2, in a kind of exemplary embodiment of needle valve assembly of fuel injection equipment (FIE), valve body 10 includes
One base 11 and a tight cap of oil nozzle 13.One end of base 11 is provided with valve body end 12, and part valve opening 14 is arranged on base 11
In.The ring set of tight cap of oil nozzle 13 and base 11.Using above-mentioned structure, the processing of the needle valve assembly of fuel injection equipment (FIE) can be simplified
And assembling.
It should be understood that, although this specification is described according to each embodiment, but not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical scheme in each embodiment may also be suitably combined to form people in the art
The understandable other embodiment of member.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent embodiments made without departing from skill spirit of the present invention
Or change, combination, segmentation or the repetition of such as feature, it should be included in the scope of the protection.
Claims (5)
1. the needle valve assembly of fuel injection equipment (FIE), including：
One valve body（10）, the valve body（10）Provided with a valve opening（14）, one and the valve opening（14）The oil-feed communicated is led to
Road（16）, and a plurality of and valve opening（14）The nozzle opening communicated（18）；With
One can be in the valve opening（14）Interior reciprocating needle-valve（20）；
It is characterized in that：
The valve body（10）Valve body end with a closing（12）；
The valve opening（14）It is adjacent to the valve body end（12）Provided with first sealing surface（142）, one be connected to described
One sealing surface（142）The second sealing surface（144）And one be connected to second sealing surface（144）The 3rd sealing surface
（146）, and in the valve opening（14）Bearing of trend on, the 3rd sealing surface（146）, second sealing surface（144）With
First sealing surface（142）With the valve body end（12）Spacing increase successively；
The nozzle opening（18）Including being arranged at first sealing surface（142）First group of nozzle opening（181）Be arranged at institute
State the 3rd sealing surface（146）Second group of nozzle opening（182）, first group of nozzle opening（181）The first jet angle（α）It is less than
Second group of nozzle opening（182）The second jet angle（β）, and first group of nozzle opening（181）Fuel oil injection direction with
Second group of nozzle opening（182）Fuel oil injection direction it is non-intersect；
The needle-valve（20）Including：
One can be in sealing contact in first sealing surface（142）Primary sealing area（26）,
One can be in sealing contact in second sealing surface（144）Secondary sealing area（28）, and
One can be in sealing contact in the 3rd sealing surface（146）The 3rd sealing surface（29）；
The needle-valve（20）Stroke be provided with first jet segment and second jet segment,
If the needle valve assembly is in first jet segment, first sealing surface（142）With the primary sealing area（26）
Disengage, second sealing surface（144）With the secondary sealing area（28）Keep in sealing contact, the oil inlet passage（16）
In fuel oil can be from first group of nozzle opening（181）It is middle to spray；
If the needle valve assembly is in second jet segment, first sealing surface（142）With the primary sealing area（26）、
Second sealing surface（144）With the secondary sealing area（28）And the 3rd sealing surface（146）With the described 3rd sealing
Face（29）Disengage, the oil inlet passage（16）In fuel oil simultaneously from first group of nozzle opening（181）With described
Two groups of nozzle openings（182）It is middle to spray.
2. needle valve assembly as claimed in claim 1, wherein：
The valve opening（14）It is additionally provided with one and is connected to the 3rd sealing surface（146）The 4th sealing surface（148）, and described
Valve opening（14）Bearing of trend on, the 4th sealing surface（148）, the 3rd sealing surface（146）, second sealing surface
（144）And first sealing surface（142）With the valve body end（12）Spacing increase successively,
The nozzle opening（18）Also include being arranged at the 4th sealing surface（148）The 3rd group of nozzle opening（183）, the described 3rd
Group nozzle opening（183）The 3rd jet angle（γ）More than second group of nozzle opening（182）The second jet angle（β）, and it is described
First group of nozzle opening（181）Fuel oil injection direction, second group of nozzle opening（182）Fuel oil injection direction and described
Three groups of nozzle openings（183）Fuel oil injection direction mutually disjoint；
The needle-valve（20）Can be in sealing contact in the 4th sealing surface including one（148）The 4th sealing surface（27）, and
The needle-valve（20）Stroke be additionally provided with the 3rd jet segment；
If the needle valve assembly is in second jet segment, first sealing surface（142）With the primary sealing area（26）、
Second sealing surface（144）With the secondary sealing area（28）And the 3rd sealing surface（146）With the described 3rd sealing
Face（29）Disengage, and the 4th sealing surface（148）With the 4th sealing surface（27）Keep it is in sealing contact, it is described enter
Oily passage（16）In fuel oil simultaneously from first group of nozzle opening（181）With second group of nozzle opening（182）It is middle to spray；
If the needle valve assembly is in the 3rd jet segment, first sealing surface（142）With the primary sealing area（26）、
Second sealing surface（144）With the secondary sealing area（28）, the 3rd sealing surface（146）With the 3rd sealing surface
（29）And the 4th sealing surface（148）With the 4th sealing surface（27）Disengage, the oil inlet passage（16）In
Fuel oil simultaneously from first group of nozzle opening（181）, second group of nozzle opening（182）With the 3rd group of nozzle opening
（183）It is middle to spray.
3. needle valve assembly as claimed in claim 2, wherein first sealing surface（142）, the primary sealing area（26）, institute
State the 3rd sealing surface（146）And the 3rd sealing surface（29）For taper surface, and second sealing surface（144）, described second
Sealing surface（28）, the 4th sealing surface（148）And the 4th sealing surface（27）For cylindroid.
4. needle valve assembly as claimed in claim 1, wherein the valve opening（14）Provided with one and the oil inlet passage（16）'s
The annular shoe cream room of connection（19）.
5. needle valve assembly as claimed in claim 1, wherein the valve body（10）Including：
One base（11）, its one end is provided with the valve body end（12）, and at least partly described valve opening（14）It is arranged at the bottom
Seat（11）；
One is located on the base（11）Tight cap of oil nozzle（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324813.6A CN105298706B (en) | 2014-07-09 | 2014-07-09 | The needle valve assembly of fuel injection equipment (FIE) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410324813.6A CN105298706B (en) | 2014-07-09 | 2014-07-09 | The needle valve assembly of fuel injection equipment (FIE) |
Publications (2)
| Publication Number | Publication Date |
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| CN105298706A CN105298706A (en) | 2016-02-03 |
| CN105298706B true CN105298706B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410324813.6A Active CN105298706B (en) | 2014-07-09 | 2014-07-09 | The needle valve assembly of fuel injection equipment (FIE) |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014738A (en) * | 2016-07-12 | 2016-10-12 | 江西汇尔油泵油嘴有限公司 | Obstructing type oil injection method and oil injection nozzle |
| DE102017131242B4 (en) * | 2017-12-22 | 2023-10-05 | Rolls-Royce Solutions GmbH | Double injector, method for operating a double injector, device for controlling and/or regulating a double injector and internal combustion engine |
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| EP1321661A2 (en) * | 2001-12-22 | 2003-06-25 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| CN103615344A (en) * | 2013-11-29 | 2014-03-05 | 哈尔滨工程大学 | Diesel injector capable of successively injecting oil |
| DE102013001098B3 (en) * | 2013-01-23 | 2014-07-03 | L'orange Gmbh | Fuel injector for use in common-rail system in motor car, has nozzle needle comprising end section that is sealingly retained in through-hole of nozzle tip, where axial bore is extended as blind hole towards near nozzle into end section |
| CN204041321U (en) * | 2014-07-09 | 2014-12-24 | 江苏大学 | The needle valve assembly of fuel injection apparatus |
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| EP1321661A2 (en) * | 2001-12-22 | 2003-06-25 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
| DE102013001098B3 (en) * | 2013-01-23 | 2014-07-03 | L'orange Gmbh | Fuel injector for use in common-rail system in motor car, has nozzle needle comprising end section that is sealingly retained in through-hole of nozzle tip, where axial bore is extended as blind hole towards near nozzle into end section |
| CN103615344A (en) * | 2013-11-29 | 2014-03-05 | 哈尔滨工程大学 | Diesel injector capable of successively injecting oil |
| CN204041321U (en) * | 2014-07-09 | 2014-12-24 | 江苏大学 | The needle valve assembly of fuel injection apparatus |
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| CN105298706A (en) | 2016-02-03 |
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