EP2820291A1 - Ventil zum zumessen von fluid - Google Patents
Ventil zum zumessen von fluidInfo
- Publication number
- EP2820291A1 EP2820291A1 EP13701450.2A EP13701450A EP2820291A1 EP 2820291 A1 EP2820291 A1 EP 2820291A1 EP 13701450 A EP13701450 A EP 13701450A EP 2820291 A1 EP2820291 A1 EP 2820291A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pot
- valve
- piston
- coupler
- cap
- 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
- 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
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
-
- 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
- F02M61/167—Means for compensating clearance or thermal expansion
-
- 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
- F02M2200/705—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for filling or emptying hydraulic chamber, e.g. for compensating clearance or thermal expansion
-
- 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
- F02M2200/707—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for avoiding fuel contact with actuators, e.g. isolating actuators by using bellows or diaphragms
Definitions
- the invention is based on a valve for metering fluid according to the preamble of claim 1, wherein the standing for a flowing or flowing medium superordinate term fluid is used in accordance with the fluid flow theory for gases and liquids.
- a known fuel injection valve (DE 10 2004 002 134 A1) has a hydraulic coupler, which is housed in a valve assembly accommodated in a valve assembly, consisting of an injection opening
- Valve needle and a valve needle actuated piezoelectric or magnetostrictive actuator arranged and supported by a respective cardan bearing on the valve needle and actuator non-positively.
- the hydraulic coupler is used to compensate for differences in length through
- Valve housing or valve needle and actuator result so that no gap can form between the valve needle and the actuator and it is always ensured that the full stroke of the actuator is transferred 1: 1 to the valve needle.
- the hydraulic coupler has a housing pot with pot bottom, pot casing and pot opening and a piston axially displaceably guided in the housing pot, wherein between piston and bottom of the pot a liquid-filled coupler gap and between the piston and pot shell an annular gap is present.
- An annular first membrane is fixed with its outer edge of the membrane on the pot shell and with its inner edge of the membrane on the piston and seals in the pot opening the annular gap between the pot shell and piston to include a first fluid-filled compensation chamber.
- One on the piston remote side of the bottom of the pot arranged second membrane closes together with the housing pot a liquid-filled second
- Coupler gap and on the other hand via an axially passing through the piston connecting channel with the first compensation chamber in communication.
- Hydraulic oil via a hermetically sealable filling channel, which is realized for example by an introduced into the pot shell radial bore, which opens into the connecting channel between the first and second compensation chamber.
- the metering valve according to the invention with the features of claim 1 has the advantage that the pot wall at least partially overlapping
- Cap jacket of the membrane due to its elastic deformation ranges can deform so much under pressure that the enclosed between the membrane and housing pot compensation chamber has a sufficiently high volume to absorb the ejected under pressure load of the piston from the coupler gap coupler liquid.
- the pressure force generated by the elastically deformed cap jacket of the membrane is sufficiently high to push back the volume of liquid stored in the compensation chamber via the annular gap into the coupler gap and to increase the coupler gap again.
- the elastic deformation regions of circumferentially successive, radially inwardly directed and axially extending indentations are formed, whereby the elastic deformation ranges with the required large
- Balance volume can be implemented in a simple manufacturing technology.
- the filling of the coupler gap with liquid e.g. Hydraulic oil, required
- Filling opening as a simple axial bore, preferably stepped bore, are provided in the bottom of the pot pot. By pressing a closure into the axial bore, preferably into the larger diameter bore portion of the stepped bore, the filling opening can be reliably closed after filling the Kopplerspalts.
- a gimbal bearing of the coupler between a valve assembly and a housing part or between two components of the valve assembly can be made directly on the pot bottom of the housing pot, which significantly simplifies the constructive and manufacturing execution of the storage.
- the housing pot is formed by a between the bottom of the pot and a component forming an actuator formed first gimbal bearing on the actuator and the piston via a second gimbal bearing supported on a valve member forming the other component.
- Volume change over pressure through the cap jacket of the membrane can be significantly improved again.
- Connection piece connected, preferably integrally formed with the connector, resulting in a manufacturing engineering simplification of the valve assembly.
- the piston is supported via a gimbal bearing on the valve assembly.
- FIG. 1 shows a longitudinal section of a valve for metering fluid
- FIG. 2 is an enlarged view of section II in FIG. 1,
- FIG. 3 shows a side view of a membrane of a coupler in the metering valve according to FIG. 1,
- FIG. 4 shows an end view of the membrane in the direction IV in FIG. 3,
- FIG. 5 shows a section of the membrane along the line V-V in FIG. 3,
- FIG. 6 is a view similar to FIG. 2 with a modified hydraulic coupler
- Figure 7 shows a detail of a side view of a metering valve according to the second embodiment, partially cut.
- the illustrated in Figure 1 in longitudinal section valve for metering fluid is, for example, as an injector for injecting fuel in one
- Valve assembly used by internal combustion engines.
- the valve has a valve assembly to be metered with the fluid and a hydraulic coupler 11 associated with the valve assembly.
- Valve assembly and hydraulic coupler 1 1 are housed in a valve housing 12 which is connected to a
- connection piece 13 End side with a connection piece 13 and at the other end face with a valve body 14 is closed in each case fluid-tight.
- the connecting piece 13 is provided with a feed 15 for the fluid and the valve body 14 with a
- Vent opening 16 provided for the fluid.
- a hollow cylindrical flow channel 17 is guided from the inlet 15 to the orifice 16 and via at least one bore 13 introduced in the connection piece 13 with the inlet 15 and via an inserted into the valve body 14 radial bore 19 with one of
- Flow channel 17 is bounded on the outside by the valve housing 132 and on the inside by a sleeve 21, which is fixed in fluid-tight manner on the one hand to the connecting piece 13 and on the other hand to the valve body 14.
- the valve assembly has a valve needle 22 for controlling the orifice 16 and a piezoelectric or magnetostrictive actuator 23 for confirming the valve needle 22.
- the valve needle 22 To open and close the orifice 16, the valve needle 22 carries a closing head 24 which is pressed onto a valve seat 26 surrounding the orifice 16 under the action of a valve needle 22 acting on the valve body 14 and supporting valve closing spring 25.
- the actuator 23 moves the valve needle 22 against the force of the valve closing spring 25 so that the closing head 24 lifts out from the valve seat 26 and the orifice 16 releases.
- the actuator 23 For energizing the actuator 23 via a
- the hydraulic coupler 1 1 shown enlarged in Figure 2 has a housing pot 30 with pot bottom 301, pot wall 302 and pot opening 303, Piston 31 and a cap-shaped membrane 32 with cap bottom 321 and cap jacket 322 on.
- the piston 31 is guided axially displaceable in the housing pot 30 and limited to the bottom of the pot 301 with a liquid, such as hydraulic oil, filled coupler gap 33 and the pot wall 302 an annular gap 34.
- Membrane 32 covered with its cap bottom 321 at the pot opening 303 the
- Coupler fluid e.g. As hydraulic oil
- the bore portion opens with the smaller diameter in the coupler gap 33 and the bore portion with the larger
- Diameter for receiving a sealing plug 37 is used.
- the cap skirt 322 extending over the pot wall 302 extends over more than half the axial length of the pot wall 302 of the housing pot 30 and is fastened to the pot wall 302 at or near its jacket edge, here by a circumferential weld seam 38.
- the cap jacket 322 is not formed smooth-surfaced but provided with elastic deformation areas, which are realized by circumferentially successive, radially inwardly directed and axially extending indentations 39. Does that exist?
- the membrane 32 may also be made of an elastomer, wherein the indentations 39 are molded in during manufacture.
- the cap bottom 321 of the membrane 32 has a central opening 40 and an opening 40 surrounding, projecting into the cap interior, funnel-shaped bottom portion 41 ( Figure 3 and 4).
- Piston 31 dips the funnel-shaped bottom portion 41 in a piston 31st formed central recess 42 a ( Figure 2) and is fixedly connected by a pressed into the recess 42 bolt 43 with the piston 31.
- the bottom region 41 can also be welded to the piston 31 in the recess 42.
- the housing pot 20 is received with clearance in a present in the connector 13, the frontally open cavity 44 and is supported on the gimbal bearing 29, which is formed between the bottom of the pot 301 and cavity floor 441, on the connector 13.
- the piston 31 is rigidly connected to the actuator 23, which carries for this purpose an axially projecting pin 231 which is pressed into a front-side recess of the recess 42 protruding bolt 43.
- Coupler gap 33 The increased pressure in the coupler gap 33 causes a displacement of the coupler liquid from the coupler gap 33, which is inserted via the annular gap 34 in the closed by the membrane 32 compensation chamber 35. Under the pressure of the displaced liquid deform the coupler liquid.
- valve is modified so far compared to the valve described above, as the housing pot 30 is integral with the connector 13, so that the pot bottom of the housing pot 30 formed by the connector 13 and the coupler gap 33 of piston 31 and Connector 13 is limited.
- the gimbal bearing on the bottom of the pot is eliminated and replaced by a gimbal bearing 46 between pin 231 of the actuator 23 and the piston 31, including the pin 231 with a rounded head dips into the recess 42 in the piston 31 and is frictionally supported there.
- Housing pot 30 is supported on the actuator 23 via a gimbal bearing 47 formed between its pot base 301 and the actuator 23 and on the valve needle 22 via a gimbal bearing 48 formed between the bolt 43 and the end of the closing valve needle 22.
- the arrangement of the hydraulic coupler 1 1 within the valve assembly of Figure 7 has compared to the arrangement of the hydraulic coupler 1 1 between the
- Valve assembly and the connector 13 according to Figure 1 has the advantage that the contact bridge 27 from the connector 28 to the actuator 23 does not have to be performed on the hydraulic coupler 1 1.
- the diameter of the hydraulic coupler 1 1 can be made significantly larger.
- the valve shown in Figure 7 is identical to the valve shown in Figures 1 and 2, so the same components are provided with the same reference numerals.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Lift Valve (AREA)
- Valve Housings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012202909A DE102012202909A1 (de) | 2012-02-27 | 2012-02-27 | Ventil zum Zumessen von Fluid |
PCT/EP2013/051458 WO2013127580A1 (de) | 2012-02-27 | 2013-01-25 | Ventil zum zumessen von fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2820291A1 true EP2820291A1 (de) | 2015-01-07 |
EP2820291B1 EP2820291B1 (de) | 2016-11-23 |
Family
ID=47605541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13701450.2A Active EP2820291B1 (de) | 2012-02-27 | 2013-01-25 | Ventil zum zumessen von fluid |
Country Status (6)
Country | Link |
---|---|
US (1) | US9470198B2 (de) |
EP (1) | EP2820291B1 (de) |
JP (1) | JP5933763B2 (de) |
CN (1) | CN104136760B (de) |
DE (1) | DE102012202909A1 (de) |
WO (1) | WO2013127580A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019214751A1 (de) | 2019-09-26 | 2021-04-01 | Mahle International Gmbh | Gehäuse |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19919313B4 (de) | 1999-04-28 | 2013-12-12 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10148594A1 (de) * | 2001-10-02 | 2003-04-10 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10158789A1 (de) * | 2001-11-30 | 2003-07-10 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10203659A1 (de) | 2002-01-30 | 2003-07-31 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US7500648B2 (en) * | 2003-02-27 | 2009-03-10 | Robert Bosch Gmbh | Fuel-injection valve |
DE10310499A1 (de) * | 2003-03-11 | 2004-09-23 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10310790A1 (de) * | 2003-03-12 | 2004-09-23 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
EP1526275B1 (de) * | 2003-10-21 | 2007-01-10 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10357454A1 (de) * | 2003-12-03 | 2005-07-07 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004002134A1 (de) | 2004-01-15 | 2005-08-04 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004002081A1 (de) * | 2004-01-15 | 2005-08-04 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102004021340A1 (de) * | 2004-04-30 | 2005-11-24 | Siemens Ag | Düsenbaugruppe und Ventil |
DE102004021921A1 (de) * | 2004-05-04 | 2005-12-01 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102007028490A1 (de) * | 2007-06-21 | 2008-12-24 | Robert Bosch Gmbh | Koppler zur Hubübertragung mittels Scherkraft, Injektor, sowie Verfahren zur Hubübertragung |
DE102008054652B4 (de) * | 2008-12-15 | 2018-01-04 | Robert Bosch Gmbh | Hydraulischer Koppler |
DE102009026532A1 (de) * | 2009-05-28 | 2010-12-02 | Robert Bosch Gmbh | Einspritzventil für ein Fluid |
DE102009045009A1 (de) * | 2009-09-25 | 2011-03-31 | Robert Bosch Gmbh | Einspritzventil für ein Fluid |
-
2012
- 2012-02-27 DE DE102012202909A patent/DE102012202909A1/de not_active Withdrawn
-
2013
- 2013-01-25 JP JP2014556971A patent/JP5933763B2/ja active Active
- 2013-01-25 US US14/381,005 patent/US9470198B2/en active Active
- 2013-01-25 CN CN201380010978.XA patent/CN104136760B/zh not_active Expired - Fee Related
- 2013-01-25 EP EP13701450.2A patent/EP2820291B1/de active Active
- 2013-01-25 WO PCT/EP2013/051458 patent/WO2013127580A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013127580A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9470198B2 (en) | 2016-10-18 |
CN104136760A (zh) | 2014-11-05 |
JP2015507142A (ja) | 2015-03-05 |
WO2013127580A1 (de) | 2013-09-06 |
DE102012202909A1 (de) | 2013-08-29 |
US20150014436A1 (en) | 2015-01-15 |
EP2820291B1 (de) | 2016-11-23 |
JP5933763B2 (ja) | 2016-06-15 |
CN104136760B (zh) | 2017-04-12 |
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