CN107542613A - Injector with damping element - Google Patents
Injector with damping element Download PDFInfo
- Publication number
- CN107542613A CN107542613A CN201710511944.9A CN201710511944A CN107542613A CN 107542613 A CN107542613 A CN 107542613A CN 201710511944 A CN201710511944 A CN 201710511944A CN 107542613 A CN107542613 A CN 107542613A
- Authority
- CN
- China
- Prior art keywords
- injector
- damping element
- injector according
- longitudinal rib
- contact area
- 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.)
- Granted
Links
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a kind of injector for being used to input fluid, the injector includes electric connection (3), fluid coupling (4), the fluid that will can be inputted by the fluid coupling is transported in the injector, and including damping element (2) made of elastomeric material, the damping element is arranged on the neighboring of the injector, wherein, the damping element (2) has multiple insertions region (20) on the axis of the injector (X X) direction, wherein, the damping element (2) up to has two contact areas (21) less in neighboring, the contact area is set up to be contacted for the component with surrounding the injector.
Description
Technical field
It is used to fluid, especially fuel being input in the combustion chamber of internal combustion engine and/or admission line the present invention relates to a kind of
In, have improved damping element injector.
Background technology
For input the injector of fluid for example in different configurations in the form of fuel injector by prior art
Know.In the injector of so-called direct-injection, injector is for example arranged in the cylinder cap of internal combustion engine and is directly inputted to fuel
In the combustion chamber of internal combustion engine.Here, injector is for example arranged on stepped hole in cylinder cap, wherein, on the ladder in hole
It is provided with sealing ring.In addition, for example it is connected to the stream of rail or similar device in being provided with the end of combustion chamber for injector
Body joint and it is provided with electric connection.In operation, the vibration and vibrations sent now from combustion chamber and/or from cylinder cap may
It is delivered on injector and is delivered in itself on hydraulic joint and/or electric connection from injector.However, this in operation may
Cause the abrasion of electric contact and/or cause increased abrasion on hydraulic joint, for example, on the seal of hydraulic joint or
On seat.Thus, it is desirable to have such a injector, the abrasion in the injector on electric connection and hydraulic joint reduce or
Occur without.
The content of the invention
In contrast, for inputting fluid, the injector of the present invention of especially fuel has and is capable of damping vibrations and vibration
Advantage, enabling significantly reduce the abrasion on the electric connection and hydraulic joint of injector.Thus, it is possible to significantly improve spray
The service life of emitter.Enable in particular to avoid the failure on electric connection caused by defective electric contact due to injector.
This is achieved according to the present invention：Injector has damping element, and the damping element is arranged on the neighboring of injector.Vibration damping
Element has multiple insertion regions on the axial direction of the axis of injector.Damping element is made and had by elastomeric material
There are at least two contact areas, the contact area is set up to in the radially adjacent with institute of the axis relative to injector
The component that connects, generally contacted with cylinder cap or similar component.Therefore, injector is supported under loading state by contact area
On damping element, and it can be decayed vibration and vibrations by the elasticity of damping element.Thus, such as from combustion chamber passed
This vibration and vibrations being delivered on injector will not continue to be delivered on electric connection and/or hydraulic joint, but by means of subtracting
The element that shakes is attenuated.
Next the preferred development configuration of the description present invention.
It is preferred that each contact area includes at least one longitudinal rib, the longitudinal rib prolongs parallel to the axis of injector
Stretch.The radial direction on the axial direction of injector and/or in injector it is therefore preferable that the longitudinal rib linearly constructed can decay
The vibration being applied in the vibration and vibrations and decay in any direction occurred on direction on injector.
Particularly preferably, each contact area of damping element has multiple longitudinal ribs.The longitudinal rib is preferably mutually equal
Arrange capablely.Particularly preferably, just four contact areas are set.Further preferably, divide on four set contact areas
She Zhi not three longitudinal ribs.Further preferably, contact area is arranged in through on the straight line of the axis of injector, the straight line
Mutually arranged with an angle of 90 degrees.
If damping element on the neighboring of housing along the axial direction of injector be arranged in actuator and electric connection it
Between, then the particularly preferred decay of vibration and vibrations can be realized.Particularly preferably, damping element be arranged in herein injector from rush
On dynamic device position remote as from electric connection.
In addition, damping element can be also suitably used for the foundation of the intrinsic frequency of decay on the injector, the intrinsic frequency may
Due to external vibration or perhaps also by the manipulation of injector, that is pass through the opening and/or closing process quilt of injector
Excitation.
Further preferably, the longitudinal rib of contact area has first in axial direction extended oblique on the first axial end portion
Face and there is the second inclined-plane in axial direction extending on the second axial end portion.Thus, obviously particularly simplify outside
Installation and removal of the injector of damping element in hole or similar component are provided with periphery.
In order to which damping element is securely fixed on injector, damping element preferably has the center with side concave region
Pass through openings.Here, side concave region is used to damping element position being precisely fixed to injector.
It is preferred that side concave region receives a part for the injection encapsulated of injector electric connection and preferably also receives injector
Other parts.The injection encapsulated of electric connection and/or injector is implemented preferably by means of plastics, wherein, the injection encapsulated carries
For the housing for electric connection.By the way that damping element is arranged on the housing of injector, enabling in particular to decay may pass
The vibration and/or vibrations being delivered on electric connection.
Particularly preferably, damping element is circumferentially closely set around the neighboring of injector.In other words, the vibration damping member
Part circlewise closes.
Alternatively, damping element is arranged around the neighboring of injector, but with the sealing of insertion.The sealing of the insertion
The inner rim of damping element is extended to from the neighboring of damping element.Therefore, damping element has the geometry with radial direction sealing
Loop configurations.Thus, enable in particular to simplify installation of the damping element to injector.
If longitudinal rib has contact area, the contact area have in cross section circle diametrically outwardly,
It is especially semicircle, then particularly preferred damping effect can be realized.Thus, in the outside of damping element and adjacent members, especially cylinder
Small contact surface is realized between lid.Therefore, damping element also has enough deformabilities and improved damping behavior in addition.
It is preferred that one is set respectively between adjacent longitudinal rib axially through region.
The injector of the present invention is preferably fuel injector, in particular for the fuel injection of liquid fuel or gaseous fuel
Device.
Brief description of the drawings
The preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.In the accompanying drawings：
Fig. 1 is in the mounted state according to the explanatory view of the injector of first preferred embodiment of the invention；
The schematic cross sectional views of the damping element of Fig. 2 Fig. 1 injector；
The schematic side elevation of Fig. 3 Fig. 2 damping element；
The schematic cross sectional views of the damping elements of Fig. 4 according to a second embodiment of the present invention.
Embodiment
1 to 3 the injector 1 according to first preferred embodiment of the invention is described in detail with reference to the accompanying drawings.
As seen from Figure 1, injector 1 is fuel injector, and the fuel injector arrangement is in cylinder cap 5.Injection
Device 1 is injected fuel directly into combustion chamber 7.
Injector 1 includes actuator 6, such as electromagnetic actuator or piezoelectric actuator, and including fluid coupling 4.Fluid
Joint 4 is connected (not shown) with rail or similar component, wherein, fuel (as being indicated by the arrow A) can be connect by fluid
First 4 are transported to the inside of injector until the injection side end 8 of injector.In addition, electric connection 3 is provided with, so as to which electric energy is defeated
Give actuator 6.Electric connection 3 is preferably connection-peg.Electric connection 3 is molded bag with the plug injection moulding encapsulation piece 10 being made of plastics
Envelope, the plug injection moulding encapsulation piece (as shown in Figure 1) also cover or be wrapped in injection side end 8 and fluid coupling 4 it
Between injector part.
In addition, injector 1 includes damping element 2, the damping element is detailed from Fig. 2 and 3.Here, the cloth of damping element 2
Put on the neighboring of injector 1.As shown in Figure 1, damping element 2 is in the axis X-X of injector direction
It is arranged on (axial direction) between actuator 6 and electric connection 3.Here, damping element 2 also wraps up plug injection moulding encapsulation piece 10
A part.
As seen from Figure 2, damping element 2 has main body 28, and the main body is in a ring, circumferentially and closely
Construction.Main body 28 has a middle thereof opening 26, and the pass through openings receive the part and injector of plug injection moulding encapsulation piece 10
Part.In addition, being disposed with side concave region 27 in middle thereof opening 26, the side concave region is equally surrounded insert in the mounted state
Head injection encapsulated part 10.As seen from Figure 2, the swallow-tail form of side concave region 27 two flanking regions outwardly are configured with
Domain.Thus, damping element is arranged on the injector anti-twistly.
Therefore, the center of inside opening of damping element 2 provides is connected with the shape sealed of injector neighboring.
In addition, damping element 2 has four contact areas 21.As seen from Figure 2, four contact areas 21
Arranged with staggering on 90 degree of position respectively along the periphery of damping element 2.Therefore, two in these contact areas 21 connect
It is mutually opposing to touch region difference.
Each in these contact areas 21 has multiple longitudinal ribs 22.These longitudinal ribs 22 are visible in detail in figure 3.
These longitudinal ribs 22 have semicircle diametrically outwardly in cross section (referring to Fig. 2).
As shown in Fig. 3, muscle 22 has constant centre portion 25, the first end in longitudinal rib longitudinally in each
The first inclined-plane 23 on portion region and the second inclined-plane 24 on the second longitudinal direction region of longitudinal rib.Here, four contact areas
21 all longitudinal rib structures are identical.Can substantially it be simplified by setting of first and second inclined-planes 23,24 on longitudinal rib 22
It is provided with installation and removal of the injector of damping element 2 in the hole 50 of cylinder cap 5.In addition, damping element 2 is in the axial direction
Have respectively axially through region 20 between adjacent longitudinal rib 22.There is provided certainly between longitudinal rib 22 axially through region 20
By gap, wherein, in the case where being provided with the installment state of injector 1 of damping element 2, longitudinal rib 22, more properly centre portion
25 partly deform and are partially filled with the free clearance.
In addition, in the case where being provided with installment state of the injector 1 of damping element 2 in hole 50 each contact area 21 it
Between leave free space 51.Therefore, sky is also left in hole 50 in the case where being provided with the installment state of injector 1 of damping element 2
Gap.These spaces can realize enough deformabilities of damping element 2, enabling decay is delivered to the vibration on injector
And/or vibrations.
This vibration and/or vibrations are for example directly delivered on the injection side end 8 of injector or passed through from combustion chamber 7
Cylinder cap 5 and sealing ring 9 are delivered on injector 1.
According to the present invention, these are delivered to vibration on injector 1 and/or vibrations now can be by injector periphery
Damping element 2 on side is decayed.Here, it is preferred that damping element 2 can cause made of elastomer：Vibration passes through in vibration damping member
Deformation acting in part 2, especially in the region of longitudinal rib 22 is attenuated.Thus avoid vibrating and vibrations are delivered to injector 1
Joint side end on, be delivered on electric connection 3 and fluid coupling 4.Therefore, connect not less than on electric connection 3 and in fluid
The power allowed on first 4, enabling avoid the abrasion on the two joints.
Vibration and/or vibrations by damping element not only due to damping element elastomeric material but also due to the He of longitudinal rib 22
It is attenuated axially through the geometry in region 20.Here, vibration and vibrations can be applied to injector 1 from all directions
On, wherein, damping effect can be unrelated with vibrating and/or shaking direction.In addition, damping element 2 with the He of longitudinal rib 22
Allow axially through the geometry on the contact area 21 in region 20：Additionally also can be in jet member, especially plug
Injection encapsulated part 10 realizes tolerance compensating in the case of dimensional discrepancy being present in the case of also without relatively larger transverse power.
In addition, damping element 2 can be realized：Frequency shift can be also realized in inputted vibration and/or vibrations so that outstanding
It can avoid undesirable intrinsic frequency on the injector, and the intrinsic frequency may cause the damage of jet member.
Fig. 4 shows the damping element 2 of injector according to a second embodiment of the present invention.The damping element 2 of second embodiment
The damping element of first embodiment is essentially corresponded in terms of the material of contact area 21 and geometry, wherein, it is real with first
Example difference is applied, radial direction sealing 11 is additionally provided with damping element 2 in the damping element 2 of second embodiment.The footpath
The middle thereof opening 26 for making damping element 2 to sealing 11 is connected with the perimeter of damping element.In this embodiment, radially
Sealing 11 is constructed in side concave region 27.It should be noted, however, that radial direction sealing 11 can also be arranged on any of damping element 2
On other optional positions, as long as the sealing makes middle thereof opening 26 be connected with perimeter.The setting of sealing 11 especially has
Damping element 2 are relatively simply installed on the neighboring of injector 1 the advantages of, because damping element 2 can support on sealing 11
Open and can be enclosed on the neighboring of injector, and can close up.Sealing 11 from main body 28 preferably by removing
Material is set, it should be noted, however, that alternatively also can with cutter or etc simply cut, to make circumferentially
The main body of closure separates on sealing 11.
The elastomeric material of damping element is preferably soft rubber or silicone material or fluorocarbon rubber (FKM) or polyurethane
(PUR)。
Claims (12)
1. the injector for inputting fluid, including：
- electric connection (3),
- fluid coupling (4), the fluid that will can be inputted by the fluid coupling are transported in the injector, and
- damping element (2), the damping element are arranged on the neighboring of the injector made of elastomeric material,
- wherein, the damping element (2) has multiple insertions region (20) on the axis of the injector (X-X) direction,
And
- wherein, the damping element (2) up to has two contact areas (21) less in neighboring, and the contact area is set up
Contacted into for the component with surrounding the injector.
2. injector according to claim 1, wherein, the contact area (21) includes at least one longitudinal rib respectively
(22), the longitudinal rib is basically parallel to the axis (X-X) extension of the injector.
3. injector according to claim 2, wherein, each contact area has multiple longitudinal ribs (20), described
Longitudinal rib is arranged in parallel to each other.
4. injector according to any one of the preceding claims, wherein, the damping element (2) is on the injector
It is arranged in along the axis (X-X) direction between actuator (6) and the electric connection (3).
5. the injector according to any one of claim 2 to 4, wherein, the longitudinal rib (22) is in the first axial end portion
It is upper with the first inclined-plane (23) in axial direction extended and on the second axial end portion with the in axial direction extended
Two inclined-planes (24).
6. injector according to any one of the preceding claims, wherein, the damping element (2), which has, carries side recessed area
The middle thereof opening (26) in domain (27).
7. injector according to claim 6, wherein, the electricity that the side concave region (27) receives the injector connects
At least one housing parts of the plug injection moulding encapsulation piece (10) of head (3).
8. injector according to any one of the preceding claims, wherein, the damping element (2), which has, circumferentially to be closed
Main body (28).
9. injector according to any one of claim 1 to 7, wherein, the damping element, which has, carries sealing (11)
Circular main body (28), wherein, the sealing (11) extends to the outer of the damping element (2) from central pass through openings (26)
Side.
10. injector according to any one of the preceding claims, wherein, the longitudinal rib (22) has on section
The circle pointed to radially outward.
11. the injector according to any one of claim 3 to 10, wherein, set respectively between adjacent longitudinal rib
One axially through region (20).
12. injector according to any one of the preceding claims, wherein, the contact area is arranged in through the spray
On the straight line of the axis (X-X) of emitter, the straight line is mutually arranged with an angle of 90 degrees.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016211689.4A DE102016211689A1 (en) | 2016-06-29 | 2016-06-29 | Injector with damping element |
| DE102016211689.4 | 2016-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107542613A true CN107542613A (en) | 2018-01-05 |
| CN107542613B CN107542613B (en) | 2021-08-06 |
Family
ID=60662256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710511944.9A Active CN107542613B (en) | 2016-06-29 | 2017-06-29 | Injector with damping element |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107542613B (en) |
| DE (1) | DE102016211689A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113423943A (en) * | 2019-02-06 | 2021-09-21 | 罗伯特·博世有限公司 | Injector with improved protection against corrosion |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009856A (en) * | 1998-05-27 | 2000-01-04 | Caterpillar Inc. | Fuel injector isolation |
| DE10038763A1 (en) * | 2000-08-09 | 2002-02-21 | Bosch Gmbh Robert | Compensation element for a fuel injector |
| EP1777436A1 (en) * | 2005-10-19 | 2007-04-25 | Peugeot Citroen Automobiles SA | Vibration dampening device for a fuel injector |
| CN101784787A (en) * | 2007-07-30 | 2010-07-21 | 罗伯特·博世有限公司 | Fuel injection system comprising compensation element |
| CN103221679A (en) * | 2010-06-17 | 2013-07-24 | 欧陆汽车有限责任公司 | Damping element for an arrangement of a cylinder head of an internal combustion engine and an injection valve |
| DE102014100781A1 (en) * | 2014-01-23 | 2015-07-23 | Hans-Jürgen Guido | vibration |
| WO2016096200A1 (en) * | 2014-12-16 | 2016-06-23 | Robert Bosch Gmbh | Decoupling element for a fuel injection device |
-
2016
- 2016-06-29 DE DE102016211689.4A patent/DE102016211689A1/en active Pending
-
2017
- 2017-06-29 CN CN201710511944.9A patent/CN107542613B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009856A (en) * | 1998-05-27 | 2000-01-04 | Caterpillar Inc. | Fuel injector isolation |
| DE10038763A1 (en) * | 2000-08-09 | 2002-02-21 | Bosch Gmbh Robert | Compensation element for a fuel injector |
| EP1777436A1 (en) * | 2005-10-19 | 2007-04-25 | Peugeot Citroen Automobiles SA | Vibration dampening device for a fuel injector |
| CN101784787A (en) * | 2007-07-30 | 2010-07-21 | 罗伯特·博世有限公司 | Fuel injection system comprising compensation element |
| CN103221679A (en) * | 2010-06-17 | 2013-07-24 | 欧陆汽车有限责任公司 | Damping element for an arrangement of a cylinder head of an internal combustion engine and an injection valve |
| DE102014100781A1 (en) * | 2014-01-23 | 2015-07-23 | Hans-Jürgen Guido | vibration |
| WO2016096200A1 (en) * | 2014-12-16 | 2016-06-23 | Robert Bosch Gmbh | Decoupling element for a fuel injection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113423943A (en) * | 2019-02-06 | 2021-09-21 | 罗伯特·博世有限公司 | Injector with improved protection against corrosion |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016211689A1 (en) | 2018-01-04 |
| CN107542613B (en) | 2021-08-06 |
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