CN102251894B - Fuel injector with hydraulic coupling unit - Google Patents
Fuel injector with hydraulic coupling unit Download PDFInfo
- Publication number
- CN102251894B CN102251894B CN201110139228.5A CN201110139228A CN102251894B CN 102251894 B CN102251894 B CN 102251894B CN 201110139228 A CN201110139228 A CN 201110139228A CN 102251894 B CN102251894 B CN 102251894B
- Authority
- CN
- China
- Prior art keywords
- coupler
- piston
- fuel injector
- pressure chamber
- solid section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- 230000008878 coupling Effects 0.000 title abstract description 12
- 238000010168 coupling process Methods 0.000 title abstract description 12
- 238000005859 coupling reaction Methods 0.000 title abstract description 12
- 230000004888 barrier function Effects 0.000 claims description 36
- 239000007787 solid Substances 0.000 claims description 35
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 230000036316 preload Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0057—Means for avoiding fuel contact with valve actuator, e.g. isolating actuators by using bellows or diaphragms
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8038—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of adhesives, glue or the like
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
Abstract
The invention provides a fuel injector with a hydraulic coupling unit (20) which comprises a coupling piston (22) and a valve piston (23) which are respectively movable axially in a coupling body (21) and a coupling body gap volume (29)is provided between the coupling piston and the valve piston. Wherein, the coupling unit (20) is arranged in a low-pressure chamber (12) and possesses a compressible storage department (50) which is configured to be on the coupling piston (22) and forms boundary relative to the low-pressure chamber (12) by means of a flexible wall (51).
Description
Technical field
The present invention relates to a kind of fuel injector with hydraulic coupling unit.
Background technique
Especially in the fuel injector with piezoelectric-actuator, in the low pressure chamber of executive component, producing compression shock when opening switch valve, this compression shock causes in low pressure chamber and to the inflow in coupled return port primarily of the flow attack formula by switch valve row control.If in state of rest, there is in actuator room the pressure of about 10 bar, then the value during master cock valve between this pressure increase to 40 to 60 bar.Axial force on the barrier film that this pressure also causes to act on executive component top, this barrier film is partly supported on again on this executive component, or rather and is supported on the contrary on this executive component with the action direction of executive component, make in order to overcome described power need one additional, for handling the component of voltage of piezoelectric-actuator.
A kind of hydraulic coupling unit for fuel injector is disclosed by DE 103 32 874 A1, there is a Coupler piston and a valve piston be directed at this Coupler internal piston, wherein these two parts define the pressure chamber that is filled with hydraulic medium between which, and this pressure chamber forms a so-called Coupler crevice volume.At this, this Coupler piston is formed with an executive component and is connected, and the operation of this executive component causes Coupler piston against the effect of-reloading spring towards the translational motion in the direction of pressure chamber.Coupler crevice volume is additional with one, compressible reservoir is formed and is connected, this reservoir relative to one around pressure chamber by by a flexible barrier film limited boundary.
Summary of the invention
Task of the present invention is, the pressure reduced after switch valve is opened in the whole length of life of fuel injector raises.
The present invention proposes a kind of fuel injector, there is the coupler unit of a hydraulic pressure, described coupler unit comprises a Coupler piston and a valve piston, this Coupler piston and valve piston are jointly axially movably led in a coupler body, and, in this Coupler piston and gauge pressure chamber as Coupler crevice volume between valve piston and coupler body, this pressure chamber is by with filling fuels, so that by the axial motion of described Coupler piston according to the diameter of valve piston and Coupler piston than the axial motion being converted to valve piston, wherein, described Coupler piston is by by a reloading spring by Coupler crevice volume outwardly, to an actuator unit, especially to an executive component preload, wherein, coupler unit to be arranged in a low pressure chamber and to have a compressible reservoir, wherein, this compressible reservoir to be built on Coupler piston and to be formed border by by a flexible wall relative to low pressure chamber.
The fuel injector of such scheme has advantage, and namely by compressible reservoir, the pressure after switch valve is opened is raised and be limited in low pressure chamber inside, the voltage thus for handling piezoelectric-actuator can be determined less.At this, the effect of compressible reservoir makes, produce when opening switch valve, cause the fuel row flowed into suddenly in low pressure chamber control impact damped, its mode is, the flexible wall forming compressible reservoir border is made a concession and in low pressure chamber, provides an additional volume, prevents pressure unexpected in low pressure chamber to raise thus.
In addition, reduced the load of barrier film by pressure amplitude very little in low pressure chamber, piezoelectric-actuator is demarcated by with low pressure chamber by this barrier film, and the structure thus for barrier film only has very little requirement.Which thereby enhance the serviceability of fuel injector.In addition, in low pressure chamber, the decline of pressure surge amplitude also reduces the danger of cavitation erosion, and cavitation erosion can appear on the closed end of low pressure chamber, such as on the sealing seat of switch valve or on the bearing of executive component in injector body.Additionally, thus reduce the pressure surge amplitude in the whole return-flow system of fuel injector, which results in the unloading of backflow plug connector and return line.
Further configuration of the present invention realizes by following measure.
In order to construct compressible reservoir, Coupler piston has a solid section axially extended.At this, compressible reservoir is arranged on the outer peripheral surface in this solid section region.
According to the first form of implementation, at least one around circular groove be opened in the outer peripheral surface in described solid section region, this circular groove seals by a flexible wall.This flexible wall can be constructed by columniform, a sleeve-shaped barrier film or corrugated, a sleeve-shaped barrier film, and wherein these barrier films are connected hermetically by the outer peripheral surface of some junctions with Coupler piston.
Another form of implementation defines, compressible reservoir at least by an arching, sleeve-shaped barrier film forms border, this barrier film to be arranged on the outer peripheral surface in described solid section region and to surround this compressible reservoir.
The feature of another form of implementation is, the through hole of the radial direction that compressible reservoir is opened in this solid section by least one is formed, and described hole is closed relative to low pressure chamber by with a barrier film as the lid of flexible wall respectively on piercing site.But also can consider, the blind hole that this compressible reservoir is offered in the solid section of Coupler piston by least one is formed, wherein, this blind hole by one as flexible wall, the barrier film of lid is by relative to low pressure chamber limited boundary.
Advantageously, this Coupler piston has a solid section, and this compressible reservoir is built in this solid section or in this solid section.
Advantageously, described solid section has an outer peripheral surface, and this compressible reservoir forms border by described flexible wall on the outer peripheral surface of this solid section.
Advantageously, offered in the described outer peripheral surface in the region of this solid section at least one around circular groove, this circular groove by this flexible wall by relative to low pressure chamber form border.
Advantageously, described flexible wall, sleeve-shaped columniform by barrier film or be made up of a barrier film that is corrugated, sleeve-shaped.
Advantageously, described compressible reservoir by least one arching, the barrier film of sleeve-shaped forms border, described barrier film to be positioned on the described outer peripheral surface in described solid section region and to form the border of this compressible reservoir relative to described low pressure chamber.
Advantageously, this compressible reservoir is opened in this solid section, through in radial direction hole by least one and forms.
Advantageously, the blind hole that this compressible reservoir is opened in this solid section by least one is formed.
Advantageously, described through hole or the described blind hole outlet position on described circumferential surface by respectively by one as flexible wall, the barrier film of lid forms border relative to low pressure chamber.
Advantageously, this compressible reservoir is filled by with a kind of gas.
Mutually can combine between above-mentioned measure, form favourable scheme of the present invention.
Accompanying drawing explanation
Multiple embodiment of the present invention is illustrated in the accompanying drawings and is described in detail in following explanation.
Accompanying drawing shows:
Fig. 1 according to the first embodiment, the sectional view of the coupler unit of the present invention of fuel injector,
Fig. 2 according to the second embodiment, the sectional view of Coupler piston in Fig. 1,
Fig. 3 according to the 3rd embodiment, the sectional view of Coupler piston in Fig. 1,
Fig. 4 according to the 4th embodiment, the sectional view of Coupler piston in Fig. 1.
Embodiment
Fuel injector illustrate that cross section in FIG shows a coupler unit 20, this coupler unit is arranged on one, and to be configured in low pressure chamber 12 in a case of sprayer 11 inner.The actuator unit 13 that one has a such as piezoelectric-actuator 14 is also provided with in case of sprayer 11.
In addition, low pressure chamber 12 forms border by a valve plate 15, and a valve element 16 with bibcock 17 is arranged in this valve plate.Valve plate 15 to be unshownedly connected by one with being threaded unit and injector body 11 hydraulic seal.Bibcock 17 forms a valve seat 19 with a seal land on valve plate 15.By the translational motion of bibcock 17, sealing rib is pressed from valve seat 19, make a unshowned control room be connected with a low pressure-/return-flow system via low pressure chamber 12 by a same unshowned drainage throttle valve thus, a unshowned valve needle with a chain of command suffers the effect in this control room.Thus, valve needle lifts from nozzle needle stand and fuel is injected in the firing chamber of internal-combustion engine.
Coupler unit 20 comprises Coupler piston 22 and a columniform valve piston 23 of coupler body 21, can-like of a sleeve-shaped.Between Coupler piston 22 and valve piston 23, be provided with a pressure chamber 25, this pressure chamber forms a Coupler crevice volume.
Coupler body 21 has the dead slot 26 that a side is opened wide on the section of its underpart, in this dead slot, be provided with the spring 27 that is configured to helical compression spring, its lower axial end portion of this spring 27 is supported on an annular shoulder being fixed on the sleeve 28 on valve piston 23.Valve piston 23 is pressed onto on the bibcock 17 of valve element 16 by spring 27.
The Coupler piston 22 of can-like is configured to have the substrate shape solid section 33 that a columniform peripheral wall 31 and have inner end wall 34, and wherein columniform peripheral wall 31 forms an outer peripheral surface 32 and an inner peripheral surface 35.At this, substrate shape solid section 33 is formed by an axial extension of Coupler piston 22.
The coupler body 21 of sleeve-shaped has an outer peripheral surface 36, inner peripheral surface 37 and an inner annular end face 38, and this outer peripheral surface has diameter d 1, and this inner peripheral surface has diameter d 2.Coupler piston 22 is axially led on the outer peripheral surface 36 of coupler body 21 by inner peripheral surface 35.Valve piston 23 is directed on the inner peripheral surface 37 of coupler body 21 by columniform piston area 39.
The pressure chamber 25 forming Coupler crevice volume forms border by the upper-end surface 41 of the inner end wall 34 of the solid section 33 of Coupler piston 22, the annular end face 38 of coupler body 21 and valve piston 23.
On the Coupler piston 22 of can-like, in the region of columniform solid section 33, be configured with the flange 43 of a radially outward orientation.The flange 44 that another radially outward points to is positioned in coupler body 21.
In addition, coupler unit 20 has a reloading spring 40, on the flange 44 that the end that this reloading spring to be used in figure plane below is supported on coupler body 21 and be arranged in opposite, end above figure plane to be supported on by an adjustment disk 45 on the flange 43 that is configured on Coupler piston 22.Reloading spring 40 makes Coupler piston 22 against an adjusting element 46 by adjustment disk 45 and flange 43, and a transmitting element 47 of actuator unit 13 acts on this adjusting element.Reloading spring 40 be responsible on the one hand thus for by Coupler piston 22 towards actuator unit 13 preload, and on the other hand play indirectly by adjustment disk 45 and adjusting element 46 effect that actuator unit 13 is preloaded, this preload of actuator unit 13 is necessary for the Functional Capability of system.
In addition, coupler unit 20 has a compressible reservoir 50, and this reservoir is formed border relative to low pressure chamber 12 by with a flexible wall 51.Compressible reservoir 50 forms one with gas, such as with the volume that air, oxygen or inert gas are filled.In order to construct compressible reservoir 50, Coupler piston 22 has an extending portion outside fluid coupling shell 21, and this extending portion forms described solid section 33, and compressible reservoir 50 is opened in this solid section or is arranged in this solid section.Described flexible wall 51 is configured to barrier film, and described barrier film makes this compressible reservoir 50 seal airtightly relative to low pressure chamber 12 by some junctions.Described compressible reservoir 50 is built on the outer peripheral surface 32 of Coupler piston 22, and preferable configuration is in the region of solid section 33.
According to the first embodiment in Fig. 1, in order to construct compressible reservoir 50 in the outer peripheral surface 32 of Coupler piston 22, offer in the region of solid section 33 one around circular groove 54, this circular groove is sealed relative to low pressure chamber 12 by by a barrier film 55 as flexible wall 51, columniform sleeve-shaped.In second embodiment of Fig. 2, this flexible wall 51 is constructed by corrugated, a sleeve-shaped barrier film 56.
Fig. 3 shows the 3rd embodiment for constructing compressible reservoir 50, the through hole 57 of a radial direction is offered on solid section 33 ground wherein through Coupler piston 22, and the piercing site of this hole on outer peripheral surface 32 is closed for the barrier film 58 constructing the lid of flexible wall 51 by with one respectively.
Fig. 4 shows the 4th embodiment for constructing compressible reservoir 50, wherein, compressible reservoir 50 is positioned at the outside on Coupler piston 22 upper outer circumference face 32, its mode is, outer peripheral surface 32 is settled the barrier film 59 of the sleeve-shaped of an arching as flexible wall 51 by the junction of two sealings, wherein, the barrier film 59 of the sleeve-shaped of this arching surrounds gas volume as compressible reservoir 50.
Another embodiment is, offers at least one blind hole in the region of solid section 33, and described blind hole can occupy an arbitrary position of the axis of symmetry of opposing coupler piston 22 at this.Described blind hole is closed relative to low pressure chamber 12 airtightly by by a lid barrier film as flexible wall 51.
The rigidity of compressible reservoir 50 can be subject to the geometric configuration of barrier film and be subject to the impact of besieged volume size.But, the structure of compressible reservoir 50 except by mentioned, by symmetrically construct around groove 54 form except also can have the configuration of interruption to form at the circumferentially asymmetrical of Coupler piston 22 or centre by one.Such as namely be applicable to this in Coupler piston some single worn portions circumferentially.
Described barrier film is preferably made up of a kind of metallic material, and this metallic material is welded airtightly by the position contacted with Coupler piston 22.In the case, such gas atmosphere, namely carries out the gas atmosphere of welding process in this gas atmosphere, automatically determines the gaseous medium of filling this compressible reservoir 50.
But also can consider, by nonmetal or by composite material construct barrier film or consider between barrier film and Coupler piston 22, implement a kind of other Placement, such as bonding.
When executive component 14 operates, Coupler piston 22 is conditioned part 46 and preload force against reloading spring 40 is translationally moved towards the direction of bibcock 17.The described fuel be in pressure chamber 25 that moves through hydraulically is delivered on the end of coupler unit side of valve piston 23, wherein, the axial motion of Coupler piston 22 is converted into the axial motion of valve piston 23 than d1/d2 according to the diameter of valve piston 23 and Coupler piston 22.The power of use is provided correspondingly hydraulically to be converted by coupler unit 20 and be passed on the bibcock 17 of valve element 16 by actuator unit 13.
Claims (11)
1. fuel injector, there is the coupler unit (20) of a hydraulic pressure, described coupler unit comprises a Coupler piston (22) and a valve piston (23), this Coupler piston and valve piston are jointly axially movably led on a coupler body (21), and, in this Coupler piston and gauge pressure chamber as Coupler crevice volume (25) between valve piston and described coupler body (21), this pressure chamber is by with filling fuels, the axial motion of described Coupler piston (22) to be converted to the axial motion of valve piston (23) according to valve piston (23) and the diameter ratio of Coupler piston (22), wherein, described Coupler piston (22) is by by a reloading spring (40) by Coupler crevice volume outwardly, to the preload of an executive component (14), wherein, coupler unit (20) to be arranged in a low pressure chamber (12) and to have a compressible reservoir (50), it is characterized in that, this compressible reservoir (50) is built into Coupler piston (22) and goes up and formed border by by a flexible wall (51) relative to low pressure chamber (12).
2. fuel injector according to claim 1, it is characterized in that, this Coupler piston (22) has a solid section (33), and this compressible reservoir (50) is built in this solid section or in this solid section.
3. fuel injector according to claim 2, it is characterized in that, described solid section (33) has an outer peripheral surface (32), and this compressible reservoir (50) forms border by described flexible wall (51) on the outer peripheral surface (32) of this solid section (33).
4. fuel injector according to claim 3, it is characterized in that, offered in described outer peripheral surface (32) in the region of this solid section (33) at least one around circular groove (54), this circular groove by this flexible wall (51) by relative to low pressure chamber (12) form border.
5. fuel injector according to claim 4, is characterized in that, described flexible wall (51) is columniform by one, the barrier film of sleeve-shaped (55) or be made up of a barrier film (56) that is corrugated, sleeve-shaped.
6. fuel injector according to claim 3, it is characterized in that, described compressible reservoir (50) by least one arching, the barrier film (59) of sleeve-shaped forms border, it is upper and form the border of this compressible reservoir (50) relative to described low pressure chamber (12) that described barrier film is positioned in described outer peripheral surface (32) in described solid section (33) region.
7. the fuel injector according to Claims 2 or 3, is characterized in that, this compressible reservoir (50) is opened in this solid section (33), through in radial direction hole (57) by least one and forms.
8. the fuel injector according to Claims 2 or 3, is characterized in that, the blind hole that this compressible reservoir (50) is opened in this solid section (33) by least one is formed.
9. fuel injector according to claim 7, it is characterized in that, the outlet position of described through hole (57) on described circumferential surface (32) by respectively by one as flexible wall (51), the barrier film (58) of lid forms border relative to low pressure chamber (12).
10. fuel injector according to claim 8, it is characterized in that, the outlet position of described blind hole on described circumferential surface (32) by respectively by one as flexible wall (51), the barrier film (58) of lid forms border relative to low pressure chamber (12).
11., according to the fuel injector one of claim 1 to 6 Suo Shu, is characterized in that, this compressible reservoir (50) is filled by with a kind of gas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010029123 DE102010029123A1 (en) | 2010-05-19 | 2010-05-19 | Fuel injector with hydraulic coupler unit |
| DE102010029123.4 | 2010-05-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102251894A CN102251894A (en) | 2011-11-23 |
| CN102251894B true CN102251894B (en) | 2015-07-08 |
Family
ID=44484858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110139228.5A Expired - Fee Related CN102251894B (en) | 2010-05-19 | 2011-05-19 | Fuel injector with hydraulic coupling unit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2388467B1 (en) |
| CN (1) | CN102251894B (en) |
| DE (1) | DE102010029123A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012219867A1 (en) * | 2012-10-30 | 2014-04-30 | Robert Bosch Gmbh | Fuel injector with piezo actuator |
| DE102014226673A1 (en) | 2014-12-19 | 2016-06-23 | Robert Bosch Gmbh | Hydraulic coupler unit for controlling a valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010343A1 (en) * | 2003-07-19 | 2005-02-03 | Robert Bosch Gmbh | Hydraulic coupler and fuel injection valve |
| CN1791744A (en) * | 2003-05-20 | 2006-06-21 | 罗伯特·博世有限公司 | Valve for controlling liquids |
| DE102007028490A1 (en) * | 2007-06-21 | 2008-12-24 | Robert Bosch Gmbh | Hydraulic coupler for injector, has coupler element which is connected with stationary component, where another coupler element is provided |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19946831C1 (en) * | 1999-09-30 | 2001-07-12 | Bosch Gmbh Robert | Valve for controlling liquids |
| DE10157886B4 (en) * | 2000-11-27 | 2009-12-17 | DENSO CORPORATION, Kariya-shi | Fuel injection unit of an internal combustion engine |
| DE102006027780A1 (en) * | 2006-06-16 | 2007-12-20 | Robert Bosch Gmbh | fuel injector |
| JP4650395B2 (en) * | 2006-11-02 | 2011-03-16 | 株式会社デンソー | Fuel injection valve |
-
2010
- 2010-05-19 DE DE201010029123 patent/DE102010029123A1/en not_active Withdrawn
-
2011
- 2011-04-13 EP EP20110162204 patent/EP2388467B1/en not_active Not-in-force
- 2011-05-19 CN CN201110139228.5A patent/CN102251894B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1791744A (en) * | 2003-05-20 | 2006-06-21 | 罗伯特·博世有限公司 | Valve for controlling liquids |
| WO2005010343A1 (en) * | 2003-07-19 | 2005-02-03 | Robert Bosch Gmbh | Hydraulic coupler and fuel injection valve |
| DE102007028490A1 (en) * | 2007-06-21 | 2008-12-24 | Robert Bosch Gmbh | Hydraulic coupler for injector, has coupler element which is connected with stationary component, where another coupler element is provided |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2388467A2 (en) | 2011-11-23 |
| DE102010029123A1 (en) | 2011-11-24 |
| EP2388467A3 (en) | 2012-01-04 |
| CN102251894A (en) | 2011-11-23 |
| EP2388467B1 (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101424994B1 (en) | Pulsation Reducer by Combination Spring | |
| US20100313853A1 (en) | Piezoelectric direct acting fuel injector with hydraulic link | |
| CN107250641B (en) | Sealing structure and its encapsulating method for gaseous fuel | |
| CN102042143B (en) | Pressure relief valve | |
| EP2941562B1 (en) | High pressure pump | |
| CN102378858B (en) | Hydraulic stroke transmitter | |
| US4750675A (en) | Damped opening poppet covered orifice fuel injection nozzle | |
| US9689359B2 (en) | Piezo injector | |
| CN101624952B (en) | Fuel injection device | |
| CN102251894B (en) | Fuel injector with hydraulic coupling unit | |
| JP5567687B2 (en) | Pulsation damping hydraulic accumulator | |
| US9222451B2 (en) | Injection valve comprising a transmission unit | |
| KR20130016298A (en) | Valve assembly for an injection valve, injection valve and method for assembling a valve assembly of an injection valve | |
| CN104769270A (en) | Fuel injector | |
| JP4568772B2 (en) | Fluid operated valve assembly | |
| CN1102995C (en) | Liquid control valve | |
| JP2005526212A (en) | Fuel injection valve for internal combustion engine | |
| US20090229571A1 (en) | Pressure booster arrangement | |
| CN101466946B (en) | Fuel injector | |
| JP2003328893A (en) | Fuel injection valve | |
| CN102472210B (en) | Valve arrangement | |
| US8069841B2 (en) | Coupling arrangement and fuel injector | |
| CN104169566B (en) | Valve module | |
| US6637677B1 (en) | Fuel injector | |
| CN107120335A (en) | Hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20210519 |