EP2864623A1 - Injection valve - Google Patents
Injection valveInfo
- Publication number
- EP2864623A1 EP2864623A1 EP13719487.4A EP13719487A EP2864623A1 EP 2864623 A1 EP2864623 A1 EP 2864623A1 EP 13719487 A EP13719487 A EP 13719487A EP 2864623 A1 EP2864623 A1 EP 2864623A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature assembly
- valve element
- injection valve
- shaped body
- cup
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 35
- 239000007924 injection Substances 0.000 title claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
-
- 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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
-
- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
Definitions
- the present invention relates to an injection valve, in particular for
- Valve needle separated from the armature and connected by a spring, so that a two-mass system is formed. As a result, the valve needle has a so-called anchor free travel with respect to the armature.
- Magnetic armature and valve needle leads to a reduction of the bounce when
- the injector according to the invention with the features of claim 1 shows a novel way of connecting the valve element with an armature assembly, further wherein a relative movement between the
- Valve element and the armature assembly is possible, so that a
- valve element and the armature assembly are inserted into one another, wherein the relative movement between the armature assembly and the valve element is limited by means of a pin.
- This arrangement according to the invention also makes possible, in particular, the advantageous embodiment of a damping chamber and / or the arrangement of a compression spring.
- the inventive design of the injection valve thus reduces the bounce of the valve element, especially during Close the spray opening.
- Injection valve comprising a housing with at least one injection opening and a housing in the housing along a longitudinal axis movable armature assembly.
- the armature assembly is moved by means of a solenoid energized.
- a valve element which is linearly movable relative to the armature assembly and relative to the housing is provided in the housing for opening and closing the at least one injection opening.
- a pin is arranged in the housing.
- the at least one pin perpendicular to
- the pin can either be stuck with the
- Anchor assembly or firmly connected to the valve element.
- the valve element is in the armature assembly.
- the pin is firmly connected to the armature assembly and extends one
- Valve member This recess in the valve element is in the direction of
- armature assembly Within the armature assembly is preferably a damping chamber for
- the anchor assembly comprises a cup-shaped body.
- the cup-shaped body is formed by a bottom which is perpendicular to the longitudinal axis and a circumferential side wall.
- the cup-shaped body opens to the combustion chamber facing side or to the injection opening.
- the valve element is guided linearly movable in the cup-shaped body. Between the bottom of the cup-shaped body and the valve element in particular the damping space is formed. To adjust the damping effect at least one outflow is preferably provided in the bottom of the cup-shaped body for the fluid to be injected.
- a compression spring is preferably arranged, which is supported with one end against the armature assembly and with the other end against the valve element. This compression spring pushes the valve element in
- Valve element and the bottom of the cup-shaped body arranged.
- the armature assembly preferably has a hollow needle as a central component. Through this hollow needle, the fluid to be injected flows. At least one flow-through opening for the fluid is particularly preferred on the hollow needle
- a magnet armature is mounted, which cooperates magnetically with an inner pole or with the magnetic coil.
- a magnet armature is mounted, which cooperates magnetically with an inner pole or with the magnetic coil.
- At the other end of the hollow needle of the cup-shaped body is used and in particular cohesively, for example by means of a welded connection, connected to the hollow needle.
- a shoulder is provided in the cup-shaped body. This paragraph represents a surface facing the combustion chamber. This surface facing the combustion chamber faces a surface of the valve element facing away from the combustion chamber. Between these two surfaces thus a squish gap is formed.
- Valve element reduces this nip. By appropriate dimensioning of the nip the damping effect is adjustable.
- the pot-shaped body is manufactured in particular as a deep-drawn part. Alternatively, e.g. a production provided as a turned part.
- the valve element preferably comprises a small valve needle, which is fixedly connected to a sealing element, in particular a ball.
- FIG. 1 shows a half section of an injection valve according to the invention according to a first embodiment
- FIG. 2 is a detail in half section of the invention
- Figure 1 shows, in half section and schematically simplified, an injection valve 1 according to the first embodiment.
- the injection valve 1 comprises a housing 2, which is shown only schematically, with at least one injection opening 3.
- the side of the injection valve 1 with the injection opening 3 is referred to as the combustion chamber-facing side 4.
- the other side of the injection valve 1 is referred to as side facing away from combustion chamber 5.
- the injection valve 1 extends along a longitudinal axis 6.
- a valve element 7 is arranged to be linearly movable within the housing 2.
- the valve element 7 comprises a short valve needle 8, which is fixedly connected to a valve ball 9.
- a recess 10 formed as a bore perpendicular to the longitudinal axis 6, is arranged.
- armature assembly 11 located in the housing 2 along the longitudinal axis 6 linearly movable armature assembly 11.
- the armature assembly 11 is by means of
- the Magnetic coil 26 movable. Furthermore, the armature assembly 11 is loaded by means of a closing pressure spring 12 in the closing direction or toward the side 4 facing the combustion chamber.
- the armature assembly 1 1 comprises a hollow needle 13 with at least one flow opening 14 for the fuel.
- a magnet armature 15 is mounted on the hollow needle 13.
- a pot-shaped body 16 in the hollow needle thirteenth The cup-shaped body 16 is fixedly connected to the hollow needle 13, in particular welded.
- the cup-shaped body 16 comprises a bottom 17, which is perpendicular to the longitudinal axis 6. At the bottom 17 is a cylindrical closes
- the cup-shaped body 16 opens to the side facing the combustion chamber 4.
- the valve element 7, in particular the short valve needle stuck 8. Fixed to the side wall 18, a pin 19 is connected.
- the pin 19 extends perpendicular to the longitudinal axis 6 in the recess 10 in the short valve needle 8. By means of this pin 19 is a movement of the valve element
- a compression spring 20 is arranged. Furthermore, the space between the combustion chamber facing away serves
- At least one outflow bore 22 in the bottom 17 is provided.
- the discharge bore 22 is dimensioned according to the desired damping effect.
- FIG. 1 shows a detail of the injection valve 1 according to the second
- the cup-shaped body comprises on its side wall 18 in the second embodiment, a shoulder 24.
- Paragraph 24 forms an annular, combustion chamber facing surface. Between this annular surface and the combustion chamber facing away from the surface
- Valve needle 8 is a nip 25 is formed. Also via this nip 25, the damping effect of the damping chamber 21 can be regulated. In the second embodiment, both by means of the nip 25 and by means of the dimensioning of the damping chamber 21 with the
- Valve element 7 is pressed, so that the valve ball 9, the injection port 3 seals.
- the armature assembly 11 in the opening direction, in particular in the direction of an inner pole, not shown, accelerated until the pin 16 on a wall of the recess 10 strikes in the valve needle 8 and the pulse on the
- Valve element 7 is transmitted.
- Quetschspaltes 25 and the dimensioning of the entire damping chamber 21 define the damping, which experience the valve needle 7 and the armature assembly 1 1.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012210424A DE102012210424A1 (en) | 2012-06-20 | 2012-06-20 | Injector |
PCT/EP2013/058488 WO2013189639A1 (en) | 2012-06-20 | 2013-04-24 | Injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2864623A1 true EP2864623A1 (en) | 2015-04-29 |
EP2864623B1 EP2864623B1 (en) | 2019-06-19 |
Family
ID=48227236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13719487.4A Active EP2864623B1 (en) | 2012-06-20 | 2013-04-24 | Injection valve |
Country Status (5)
Country | Link |
---|---|
US (1) | US9394869B2 (en) |
EP (1) | EP2864623B1 (en) |
JP (1) | JP6028095B2 (en) |
DE (1) | DE102012210424A1 (en) |
WO (1) | WO2013189639A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2947306A1 (en) * | 2014-05-22 | 2015-11-25 | Continental Automotive GmbH | Injector for injecting fluid |
DE102015209505A1 (en) * | 2015-05-22 | 2016-11-24 | Robert Bosch Gmbh | fuel injector |
DE102020212935A1 (en) * | 2020-10-14 | 2022-04-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | gas metering valve |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2575272A (en) * | 1947-07-17 | 1951-11-13 | Skinner Chuck Company | Rapid closure valve for high-flow rates at low-pressure drop |
US3632081A (en) * | 1970-04-10 | 1972-01-04 | Nasa | Solenoid valve including guide for armature and valve member |
CH671080A5 (en) * | 1986-10-01 | 1989-07-31 | Sulzer Ag | |
US5048790A (en) * | 1990-07-18 | 1991-09-17 | Target Rock Corporation | Self-modulating control valve for high-pressure fluid flow |
US5172887A (en) * | 1991-06-24 | 1992-12-22 | Lucas Industries Public Limited Company | Fluid control valve |
JPH08210546A (en) * | 1995-02-07 | 1996-08-20 | Aisan Ind Co Ltd | Pilot type control valve for vehicle |
JP2685732B2 (en) * | 1995-03-29 | 1997-12-03 | シーケーディ株式会社 | Pilot kick type solenoid valve |
JP3921717B2 (en) * | 1996-11-25 | 2007-05-30 | トヨタ自動車株式会社 | Fuel supply control device |
DE10039077A1 (en) | 2000-08-10 | 2002-02-21 | Bosch Gmbh Robert | Fuel injection valve esp. of IC engines with solenoid coil and armature and return spring also valve needle for operating valve closing body which together with valve seat surface forms sealed seat |
DE10065528A1 (en) | 2000-12-28 | 2002-07-04 | Bosch Gmbh Robert | Fuel injector |
JP2004162813A (en) * | 2002-11-13 | 2004-06-10 | Ckd Corp | High pressure solenoid valve |
EP1460263B1 (en) * | 2003-03-19 | 2009-07-15 | Continental Automotive GmbH | Injection valve with a needle biased by a spring |
JP4330943B2 (en) * | 2003-06-30 | 2009-09-16 | 株式会社ジェイテクト | High pressure valve for hydrogen gas and decompression device for hydrogen gas |
DE602005000060T2 (en) * | 2004-02-20 | 2007-03-08 | Delphi Technologies, Inc., Troy | injection |
JP4268604B2 (en) * | 2005-08-04 | 2009-05-27 | 愛三工業株式会社 | solenoid valve |
JP4820470B2 (en) * | 2006-08-22 | 2011-11-24 | 株式会社日本自動車部品総合研究所 | Fuel injection control device for internal combustion engine |
JP2009079485A (en) * | 2007-09-25 | 2009-04-16 | Toyota Motor Corp | Fuel injection valve |
JP2010180767A (en) * | 2009-02-05 | 2010-08-19 | Denso Corp | Fuel injection nozzle |
JP2010223166A (en) * | 2009-03-25 | 2010-10-07 | Nippon Soken Inc | Fuel injection control device of internal combustion engine |
-
2012
- 2012-06-20 DE DE102012210424A patent/DE102012210424A1/en not_active Withdrawn
-
2013
- 2013-04-24 EP EP13719487.4A patent/EP2864623B1/en active Active
- 2013-04-24 JP JP2015516519A patent/JP6028095B2/en not_active Expired - Fee Related
- 2013-04-24 WO PCT/EP2013/058488 patent/WO2013189639A1/en active Application Filing
- 2013-04-24 US US14/409,587 patent/US9394869B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2013189639A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP6028095B2 (en) | 2016-11-16 |
US9394869B2 (en) | 2016-07-19 |
WO2013189639A1 (en) | 2013-12-27 |
DE102012210424A1 (en) | 2013-12-24 |
EP2864623B1 (en) | 2019-06-19 |
JP2015519512A (en) | 2015-07-09 |
US20150176553A1 (en) | 2015-06-25 |
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