EP2971749A1 - Ventil zum steuern eines fluids mit erhöhter dichtheit - Google Patents
Ventil zum steuern eines fluids mit erhöhter dichtheitInfo
- Publication number
- EP2971749A1 EP2971749A1 EP14700722.3A EP14700722A EP2971749A1 EP 2971749 A1 EP2971749 A1 EP 2971749A1 EP 14700722 A EP14700722 A EP 14700722A EP 2971749 A1 EP2971749 A1 EP 2971749A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve seat
- sealing area
- sealing
- hardness
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 87
- 239000012530 fluid Substances 0.000 title claims abstract description 7
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 9
- 235000019589 hardness Nutrition 0.000 description 24
- 238000002347 injection Methods 0.000 description 15
- 239000007924 injection Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- 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
- F02M63/0077—Valve seat details
-
- 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
- F02M61/166—Selection of particular materials
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0024—Valves characterised by the valve actuating means electrical, e.g. using solenoid in combination with permanent magnet
Definitions
- the present invention relates to a valve for controlling a fluid, in particular a fuel injection valve, with an increased tightness in the closed state of the valve.
- Valves for controlling fluids are known from the prior art, for example as injectors.
- a closing element releases or closes injection holes, which are formed in a valve seat.
- Closing movement of the closing element is in this case an impact movement. This should be done with the valve closed, i. When the closing element rests against the valve seat, no fuel leak through leakage, as this unburned fuel can get into the exhaust system of an internal combustion engine. Furthermore, during operation of the valve, formation of particles, e.g. be avoided by abrasion, which can lead to damage to the valve and / or other components of an internal combustion engine. Since valves are usually mass components, a solution should be
- valve according to the invention for controlling a fluid with the features of claim 1 has the advantage that a tightness of the valve can be significantly improved.
- valve according to the invention is easily and inexpensively produced by mass production.
- the valve according to the invention has a particularly simple and
- valve in this case a closing element and a valve seat, wherein the valve seat has a sealing area and an adjacent to the sealing area
- Valve seat area has.
- the closing element seals at the sealing area when the valve is in the closed state. Furthermore, the sealing area and the valve seat area merge into one another directly and without transition, i. there is no step or step or the like between the sealing area and the valve seat area. Furthermore, a hardness of the sealing area is smaller than a hardness of the closing element.
- Closing element is achieved, so that an improved tightness is possible.
- improved tightness can thus be achieved.
- a hardness difference between the sealing area and the closing element is selected such that no plastic deformation takes place when closing the valve.
- the valve according to the invention still has sufficient tightness, since no plastic deformation at the sealing region of the valve seat are present. In operation occurs at most an elastic deformation in the closed state of the valve, which, however, is reversed immediately after lifting the closing element from the sealing area. In other words, a plastic deformation of the sealing area by the
- Closing prevents, so that the tightness properties of the valve are still sufficiently available even after prolonged operation.
- a sealing line in particular a circular sealing line, is present in the closed state of the valve between the closing element and the sealing area.
- the closing element is a ball and / or the valve seat is a conical surface.
- valve seat portion has a hardness which is greater than a hardness of
- the sealing region comprises an annular, elastomeric sealing element, which is arranged in a groove in the valve seat.
- a cross section of the elastomeric sealing element is quadrangular, in particular rectangular.
- Valve seat area can be ensured.
- a cohesive connection is formed between the sealing area and the valve seat area.
- a one-piece valve seat can be provided.
- the valve seat is an MIM component
- a guide region for guiding the closing element is immediately adjacent to the sealing region, wherein the guide region has a hardness which is also smaller than a hardness of the closing element.
- the same sealing range and more preferred are the guide area and the sealing area made of the same materials.
- a particularly high tightness can be achieved if a thickness of the sealing region has approximately one third of a thickness of the valve seat.
- the thickness of the sealing area and the valve seat is determined, starting from a sealing line between the closing element and sealing area, perpendicular to the surface.
- the valve according to the invention is particularly preferably a solenoid valve for controlling fuel in a fuel injection.
- the solenoid valve according to the invention as an intake manifold injection valve or as
- valve seat has a plurality of spray holes, which can be arranged by the present invention on a spray hole diameter, which is significantly smaller than a spray hole diameter in the prior art.
- FIG. 1 shows a schematic view of an injection valve according to a first exemplary embodiment of the invention
- Figure 2 is a schematic sectional view of a valve seat of the
- FIG. 3 is an enlarged, schematic partial view of the valve seat of
- FIG. 2 is a diagrammatic representation of FIG. 1
- Figure 4 is a schematic sectional view of a valve seat according to a second embodiment of the invention.
- Figure 5 is a schematic sectional view of a valve seat according to a third embodiment of the invention.
- the injection valve 1 comprises a valve housing 8, a magnet armature 13, a coil 14 and an inner pole 16.
- a closing spring 15 is provided in order to close the injection valve again after the injection has taken place.
- the reference numeral 17 denotes an electrical connection.
- a closing element 2 is provided in the form of a ball, wherein the ball is in communication with a valve needle 12, on which the armature 13 is arranged.
- the closing element 2 seals on a valve seat 3, which is shown in detail in FIGS. 2 and 3.
- the valve seat 3 is in this
- the valve seat 3 comprises a sealing region 4 and a valve seat region 5 adjoining the sealing region 4.
- the sealing region 4 is annularly formed on the valve seat 3 and has a rectangular cross section (cf. FIG. 3).
- the valve seat 5 is provided on both sides of the sealing portion 4.
- a plurality of injection holes 6 are formed on the valve seat, via which fuel can be injected into a combustion chamber or the like.
- the injection holes 6 are formed step-shaped.
- a guide portion 7 is provided, on which the closing element 2 is guided. As a result, a fast and safe closing of the valve is achieved.
- Figures 1 to 3 each show the closed state of the valve. Therefore, as shown in FIG. 3, a line-shaped sealing line 9 forms between the closing element 2 and the sealing area 4 of the valve seat 3.
- a hardness of the closing element 2 is selected such that the closing element 2 has a greater hardness than the sealing region 4.
- the valve seat region 5, which directly adjoins the sealing region 4 has a greater hardness than the sealing region 4.
- the hardness of the valve seat portion 5 is smaller than the hardness of the closing element 2.
- the hardness of the closing element 2, the sealing portion 4 and the valve seat portion 5 can be determined by known methods (eg according to Vickers).
- the valve seat 3 of the first exemplary embodiment is produced by means of MIM technology, wherein different materials are used for the sealing region 4 and the valve seat region 5, respectively. This results in a cohesive connection 10, between the sealing region 4 and the
- Valve seat portion 5 which is indicated in Figure 3 by the dashed line.
- a thickness D1 of the sealing region 4 perpendicular to the surface of the valve seat is approximately one third of a total thickness D2 of the valve seat 3
- Sealing area 4 and the valve seat portion 5 are present, so that the sealing area and the valve seat area directly and continuously merge into one another.
- Tightness of the valve in the closed state is possible.
- shock pulses which occur due to a closing operation of the valve, are absorbed and also a noise level is reduced.
- Operating time of the valve can be maintained.
- a slight, elastic deformation on the sealing area 4 occur, which is, however, reversed after lifting the closing element 2.
- a reduced wear can be obtained, so that a defined, optimized surface finish on the sealing region 4 can be retained longer.
- valve seat 3 can be ensured by the use of the MIM method.
- the invention also reduces a component load, so that the injection holes 6 can be arranged closer to each other and in particular a seat diameter of the injection holes 6 smaller can be chosen. This results in the further advantage that thereby lower magnetic forces are required for opening, so that the magnetic circuit can be designed more cost-effective, and in particular a power requirement of the magnetic circuit is reduced to open.
- Tightness of the valve can be achieved in the closed state. In addition, some damping during the closing process and a reduced closure can be obtained.
- FIG. 4 shows a valve 1 according to a second preferred embodiment of the invention.
- the valve 1 of the second embodiment the valve 1 of the second embodiment
- Sealing region of the valve formed by an elastomeric sealing element 20 As can be seen in FIG. 4, the sealing element 20 has a rectangular shape
- FIG. 5 shows a valve 1 according to a third exemplary embodiment of the invention.
- the third embodiment differs from the first embodiment
- the guide region 27 also has a different hardness than a hardness of the closing element 2.
- a hardness of the guide region 27 and the sealing region 4 are particularly preferred.
- the sealing area 4 and the guide area 27 can also be produced in one step together with the valve seat 3 by means of an MIM method.
- a different metal powder is used for the guide region 27, so that in the finished component then the sealing region 4 and the guide portion 27 have different hardnesses.
- a thickness of the sealing portion 4 and the guide portion 27 is preferably the same.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Fuel-Injection Apparatus (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013204152.7A DE102013204152A1 (de) | 2013-03-11 | 2013-03-11 | Ventil zum Steuern eines Fluids mit erhöhter Dichtheit |
PCT/EP2014/050886 WO2014139706A1 (de) | 2013-03-11 | 2014-01-17 | Ventil zum steuern eines fluids mit erhöhter dichtheit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2971749A1 true EP2971749A1 (de) | 2016-01-20 |
EP2971749B1 EP2971749B1 (de) | 2019-03-13 |
Family
ID=49989779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14700722.3A Active EP2971749B1 (de) | 2013-03-11 | 2014-01-17 | Ventil zum steuern eines fluids mit erhöhter dichtheit |
Country Status (7)
Country | Link |
---|---|
US (1) | US10125735B2 (de) |
EP (1) | EP2971749B1 (de) |
JP (1) | JP6297608B2 (de) |
KR (1) | KR20150130292A (de) |
CN (1) | CN105008710B (de) |
DE (1) | DE102013204152A1 (de) |
WO (1) | WO2014139706A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021014791A (ja) * | 2017-11-16 | 2021-02-12 | 日立オートモティブシステムズ株式会社 | 高圧燃料ポンプ |
JP7193804B2 (ja) * | 2019-06-05 | 2022-12-21 | 株式会社サタケ | 圧電アクチュエータ、圧電式バルブ、及び圧電アクチュエータの製造方法 |
JP7300117B2 (ja) * | 2019-06-28 | 2023-06-29 | 株式会社サタケ | 圧電式バルブ及び該圧電式バルブの製造方法 |
DE102020208228A1 (de) * | 2019-07-19 | 2021-01-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoff-Hochdruckpumpe |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2874000A (en) * | 1957-03-13 | 1959-02-17 | Bosch Arma Corp | Fuel injection nozzles |
US3279704A (en) * | 1964-05-07 | 1966-10-18 | Buehler Corp | Variable nozzle |
GB1565210A (en) * | 1975-10-21 | 1980-04-16 | Lucas Industries Ltd | Fuel injection nozzles for direct injection internal combustion engine |
DE4230875A1 (de) | 1992-09-16 | 1994-03-17 | Bosch Gmbh Robert | Vorgesteuertes Druckregelventil |
JP3431378B2 (ja) | 1995-06-22 | 2003-07-28 | 株式会社日立製作所 | 弁のシール面の仕上加工方法および弁のシール面の仕上加工装置および弁装置 |
DE10049519B4 (de) | 2000-10-06 | 2006-01-12 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10063261B4 (de) | 2000-12-19 | 2005-09-01 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6708951B2 (en) | 2002-01-17 | 2004-03-23 | Westinghouse Air Brake Technologies Corporation | Annular sealing device having a positive stop means for use in a valve member |
DE10246230A1 (de) | 2002-10-04 | 2004-04-29 | Robert Bosch Gmbh | Einspritzventil und Verfahren zu dessen Herstellung |
DE50309492D1 (de) | 2002-10-26 | 2008-05-08 | Bosch Gmbh Robert | Ventil zum steuern eines fluids |
US6991219B2 (en) * | 2003-01-07 | 2006-01-31 | Ionbond, Llc | Article having a hard lubricious coating |
JP2007177675A (ja) * | 2005-12-27 | 2007-07-12 | Nippon Piston Ring Co Ltd | ニードルバルブ用ニードルシールおよびニードルバルブ |
JP2007247519A (ja) | 2006-03-15 | 2007-09-27 | Hitachi Ltd | 燃料噴射弁およびその製造方法 |
US20070228193A1 (en) * | 2006-03-31 | 2007-10-04 | Aisan Kogyo Kabushiki Kaisha | Fuel injector |
JP2007292057A (ja) | 2006-03-31 | 2007-11-08 | Aisan Ind Co Ltd | 燃料噴射弁、燃料噴射弁の製造方法 |
JP2008133752A (ja) | 2006-11-28 | 2008-06-12 | Toyota Motor Corp | 燃料噴射ノズル |
DE102007037219A1 (de) | 2007-08-07 | 2009-02-12 | Robert Bosch Gmbh | Ventilelement und Verfahren zu seiner Hersellung |
EP2067983B1 (de) * | 2007-12-04 | 2014-07-16 | Continental Automotive GmbH | Ventilanordnung für ein Einspritzventil und Einspritzventil |
JP5142859B2 (ja) | 2008-07-07 | 2013-02-13 | 株式会社ケーヒン | 電磁式燃料噴射弁 |
JP2011001892A (ja) | 2009-06-19 | 2011-01-06 | Nikki Co Ltd | インジェクタ |
JP5637009B2 (ja) | 2011-02-24 | 2014-12-10 | 株式会社デンソー | インジェクタ |
JP5464167B2 (ja) | 2011-04-05 | 2014-04-09 | 株式会社デンソー | 燃料噴射弁 |
-
2013
- 2013-03-11 DE DE102013204152.7A patent/DE102013204152A1/de not_active Withdrawn
-
2014
- 2014-01-17 WO PCT/EP2014/050886 patent/WO2014139706A1/de active Application Filing
- 2014-01-17 EP EP14700722.3A patent/EP2971749B1/de active Active
- 2014-01-17 US US14/772,445 patent/US10125735B2/en not_active Expired - Fee Related
- 2014-01-17 CN CN201480012969.9A patent/CN105008710B/zh not_active Expired - Fee Related
- 2014-01-17 KR KR1020157024772A patent/KR20150130292A/ko not_active Application Discontinuation
- 2014-01-17 JP JP2015561987A patent/JP6297608B2/ja not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2014139706A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20160017855A1 (en) | 2016-01-21 |
JP2016509162A (ja) | 2016-03-24 |
JP6297608B2 (ja) | 2018-03-20 |
EP2971749B1 (de) | 2019-03-13 |
KR20150130292A (ko) | 2015-11-23 |
CN105008710B (zh) | 2018-11-30 |
DE102013204152A1 (de) | 2014-09-11 |
US10125735B2 (en) | 2018-11-13 |
WO2014139706A1 (de) | 2014-09-18 |
CN105008710A (zh) | 2015-10-28 |
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