EP1450034A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1450034A1 EP1450034A1 EP03025329A EP03025329A EP1450034A1 EP 1450034 A1 EP1450034 A1 EP 1450034A1 EP 03025329 A EP03025329 A EP 03025329A EP 03025329 A EP03025329 A EP 03025329A EP 1450034 A1 EP1450034 A1 EP 1450034A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- injection valve
- valve according
- coupler
- membrane
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 39
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 239000012528 membrane Substances 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 229920002545 silicone oil Polymers 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 13
- 239000007788 liquid Substances 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
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- F02M61/04—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
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
-
- 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
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9084—Rheological fluids
-
- 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
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
Definitions
- the invention is based on a fuel injection valve according to the preamble of the main claim.
- EP 1 046 809 A2 discloses a Fluid metering known, which is a substantially Housing, located therein under fluid pressure Chamber and a guided through the chamber Valve needle, wherein a first end of the valve needle outside the chamber with a hub can be acted upon and the second end with a positioned on the housing Valve seat associated with the chamber valve forms.
- a lead-through element for the valve needle whose first end is a metal bellows used, the hermetically sealed and only slight axial pressure related Forces generated.
- a disadvantage of the known from EP 1 046 809 A2 Fluid metering device is in particular that these exclusively for constant, very high fluid pressures is designed. At a pressure drop during operation the fluid metering device, in particular, when the Device for metering fuel in one Internal combustion engine is used, the evaporated Hydraulic medium, which leads to malfunction of the coupler.
- the fuel injection valve according to the invention with the characterizing features of the main claim has In contrast, the advantage that the hydraulic coupler also remains functional at low fuel pressures, which through the use of a special hydraulic fluid, such.
- a special hydraulic fluid such as silicone oil, as well as a suitable design of the coupler with a different position engaging membrane is possible.
- the membrane between two positions be folded back and forth to such a maximum or minimal volume of the compensation chamber depending on Establish operating state of the fuel injection valve can.
- coupler space optionally can be filled with a rheological fluid.
- Fig. 1 shows in a highly schematic view a section through a first embodiment of a Inventively designed fuel injection valve. 1
- the fuel injection valve 1 is in particular for direct injection of fuel into the combustion chamber of a mixture-compacting, spark-ignited internal combustion engine suitable.
- the fuel injection valve 1 comprises a piezoelectric or magnetostrictive actuator 2, which in encapsulated by a sleeve 3 and by a biasing spring 4th is biased.
- An actuator cartridge 5 contains beside the actuator 2 and the biasing spring 4 on the inflow side of the actuator 2 a Coupler element 6 and downstream an actuator 7th
- the Aktorpatrone 5 is opposed by a corrugated pipe 8 sealed by a fuel flowing through the interior 9.
- the coupler element 6 comprises a coupler space 10, which for example, filled with silicone oil.
- the coupler space 10 is also sealed via a corrugated tube seal 11.
- the Corrugated pipe is radially stiff. It can therefore be filled axially Supporting forces.
- a Coupler spring 12 is arranged, which ensures that a Coupler foot 13 is always held on the actuator 2 in Appendix.
- a coupler head 14 is supported on a shoulder 15 on the Aktorpatrone 5 ab.
- a pin 17 is arranged, which positively with the actuator base 13 is connected and in the recess 16 is guided.
- annular gap 18 is formed, which the Transition of hydraulic fluid in a compensation chamber 19th allowed. This causes slow volume changes of thermal processes in the coupler 6 possible.
- the compensation chamber 19 is through a membrane 20th completed.
- the membrane 20 is in a first Position shown, which is a maximum compensation space 19 defined.
- Fig. 1B illustrates the membrane 20 in a second Position, which is a minimum compensation space 19 Are defined.
- intermediate positions are possible.
- the Folding the membrane 20 from the second to the first Position is due to the displacement of the hydraulic medium in the equalization volume 19 achieved while folding back in the starting position for example by a only in Fig. 1B illustrated return spring 21 are taken can.
- the inventively designed fuel injector 1 also has an electrical line 22 to Contacting the actuator 2 and a housing 23, in which the coupler 6 and a valve group 24 is arranged are.
- the valve group 24 comprises a support element 25, which is in operative connection with a valve needle 26.
- an outward Opening fuel injector 1 To reset the Valve needle 26 serves a return spring 29, which between the support element 25 and the housing 23 is clamped.
- a Seal 30 seals the fuel injector 1 against a cylinder head not shown the Internal combustion engine.
- the coupler space 10 in the in Fig. 2 illustrated second embodiment of a Inventively designed fuel injection valve. 1 filled with a rheological fluid.
- a rheological fluid behaves at slow, so z. B. thermal length changes such as a liquid at fast length changes of the actuator 2, ie z. B. at Excitement of it, like a solid. Accordingly, can on the use of the pin 17 of FIG. 1A and 1B be waived, since the balance of the rheological Liquid over the recess 16 both slowly enough at thermal change in length as well as sufficiently stiff at Excitement of the actor reacts.
- the invention is not limited to those shown Embodiments limited and z. B. for others Designs of fuel injectors 1 such. B. inside opening fuel injection valves 1 suitable.
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
Description
- Fig. 1A
- einen schematischen Schnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils in einem ersten Betriebszustand,
- Fig. 1B
- einen schematischen Ausschnitt aus dem in Fig. 1 dargestellten ersten Ausführungsbeispiel des erfindungsgemäßen Brennstoffeinspritzventils im Bereich IB in einem zweiten Betriebszustand, und
- Fig. 2
- einen schematischen Ausschnitt aus einem zweiten Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils im Bereich IB mit einem alternativen Kopplermedium.
Claims (15)
- Brennstoffeinspritzventil (1) zum direkten Einspritzen von Brennstoff in einen Brennraum einer Brennkraftmaschine mit einem erregbaren Aktuator (2), einer mit dem Aktuator (2) in Wirkverbindung stehenden und in einer Schließrichtung von einer Rückstellfeder (29) beaufschlagten Ventilnadel (26) zur Betätigung eines Ventilschließkörpers (27), der zusammen mit einer Ventilsitzfläche (28) einen Dichtsitz bildet, und einem hydraulischen Koppler (6),
dadurch gekennzeichnet, daß der hydraulische Koppler (6) ein Hydraulikvolumen (10) und einen Ausgleichsraum (19) umfaßt, wobei der Ausgleichsraum (19) durch eine Membran (20) in seinem Volumen veränderbar ist. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß die Membran (20) zwischen einer ersten Stellung und einer zweiten Stellung umklappbar ist. - Brennstoffeinspritzventil nach Anspruch 2,
dadurch gekennzeichnet, daß die erste Stellung der Membran (20) einem maximalen Ausgleichsraum (19) entspricht. - Brennstoffeinspritzventil nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß die zweite Stellung der Membran (20) einem minimalen Ausgleichsraum (19) entspricht. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die Membran (20) zwischen der ersten und der zweiten Stellung durch ein in der Hydraulikkammer (10) vorhandenen Hydraulikmediums umklappbar und dazwischen stufenlos verstellbar ist. - Brennstoffeinspritzventil nach Anspruch 5,
dadurch gekennzeichnet, daß als Hydraulikmedium Silikonöl vorgesehen ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß der Koppler (6) einen Kopplerfuß (13) und einen Kopplerkopf (14) umfaßt. - Brennstoffeinspritzventil nach Anspruch 7,
dadurch gekennzeichnet, daß in dem Kopplerfuß (13) ein Stift (17) angeordnet ist. - Brennstoffeinspritzventil nach Anspruch 8,
dadurch gekennzeichnet, daß sich der Stift (17) in eine Ausnehmung (16) des Kopplerkopfes (14) erstreckt. - Brennstoffeinspritzventil nach Anspruch 9,
dadurch gekennzeichnet, daß der Stift (17) in der Ausnehmung (16) unter Bildung eines Ringspalts (18) geführt ist. - Brennstoffeinspritzventil nach einem der Ansprüche 7 bis 10,
dadurch gekennzeichnet, daß der Kopplerfuß (13) und der Kopplerkopf (14) durch eine Feder (12) voneinander beabstandet sind. - Brennstoffeinspritzventil nach einem der Ansprüche 7 bis 11,
dadurch gekennzeichnet, daß der Kopplerraum (10) durch eine Wellrohrdichtung (11) abgedichtet ist. - Brennstoffeinspritzventil nach einem der Ansprüche 7 bis 12,
dadurch gekennzeichnet, daß in dem Kopplerfuß (13) eine Bohrung (31) zur Befüllung des Kopplerraums (10) vorgesehen ist. - Brennstoffeinspritzventil nach Anspruch 13,
dadurch gekennzeichnet, daß die Bohrung (31) nach Befüllen des Kopplerraums (10) durch eine vorzugsweise eingepreßte Kugel (32) verschließbar ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet, daß das Hydraulikvolumen (10) eine rheologische Flüssigkeit enthält.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307816 | 2003-02-24 | ||
DE10307816A DE10307816A1 (de) | 2003-02-24 | 2003-02-24 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1450034A1 true EP1450034A1 (de) | 2004-08-25 |
EP1450034B1 EP1450034B1 (de) | 2008-04-09 |
Family
ID=32731122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03025329A Expired - Lifetime EP1450034B1 (de) | 2003-02-24 | 2003-11-04 | Brennstoffeinspritzventil |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1450034B1 (de) |
AT (1) | ATE391850T1 (de) |
DE (2) | DE10307816A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2141347A1 (de) * | 2008-07-03 | 2010-01-06 | Continental Automotive GmbH | Wärmekompensationsanordnung |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4306072A1 (de) * | 1993-02-26 | 1994-09-08 | Siemens Ag | Vorrichtung zum Öffnen und Verschließen einer in einem Gehäuse vorhandenen Durchtrittsöffnung |
DE19708304A1 (de) * | 1997-02-28 | 1998-09-10 | Siemens Ag | Vorrichtung zur Übertragung einer Bewegung und Einspritzventil mit einer Vorrichtung zur Übertragung einer Bewegung |
DE19744235A1 (de) * | 1997-10-07 | 1999-04-08 | Fev Motorentech Gmbh & Co Kg | Einspritzdüse mit piezoelektrischem Aktuator |
DE10044120A1 (de) * | 2000-09-07 | 2002-04-04 | Bosch Gmbh Robert | Common-Rail-System |
US20020139864A1 (en) * | 2000-10-11 | 2002-10-03 | Jack Lorraine | Dual-spring compensator assembly for a fuel injector and method |
WO2003018992A1 (de) * | 2001-08-20 | 2003-03-06 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
EP1378657A2 (de) * | 2002-07-04 | 2004-01-07 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19919313B4 (de) * | 1999-04-28 | 2013-12-12 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE19940056A1 (de) * | 1999-08-24 | 2001-03-22 | Siemens Ag | Dosiervorrichtung und Verfahren zur Dosierung |
DE19940054C2 (de) * | 1999-08-24 | 2003-11-27 | Siemens Ag | Dosierventil für ein unter Druck stehendes Fluid |
-
2003
- 2003-02-24 DE DE10307816A patent/DE10307816A1/de not_active Withdrawn
- 2003-11-04 AT AT03025329T patent/ATE391850T1/de not_active IP Right Cessation
- 2003-11-04 DE DE50309573T patent/DE50309573D1/de not_active Expired - Lifetime
- 2003-11-04 EP EP03025329A patent/EP1450034B1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4306072A1 (de) * | 1993-02-26 | 1994-09-08 | Siemens Ag | Vorrichtung zum Öffnen und Verschließen einer in einem Gehäuse vorhandenen Durchtrittsöffnung |
DE19708304A1 (de) * | 1997-02-28 | 1998-09-10 | Siemens Ag | Vorrichtung zur Übertragung einer Bewegung und Einspritzventil mit einer Vorrichtung zur Übertragung einer Bewegung |
DE19744235A1 (de) * | 1997-10-07 | 1999-04-08 | Fev Motorentech Gmbh & Co Kg | Einspritzdüse mit piezoelektrischem Aktuator |
DE10044120A1 (de) * | 2000-09-07 | 2002-04-04 | Bosch Gmbh Robert | Common-Rail-System |
US20020139864A1 (en) * | 2000-10-11 | 2002-10-03 | Jack Lorraine | Dual-spring compensator assembly for a fuel injector and method |
WO2003018992A1 (de) * | 2001-08-20 | 2003-03-06 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
EP1378657A2 (de) * | 2002-07-04 | 2004-01-07 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2141347A1 (de) * | 2008-07-03 | 2010-01-06 | Continental Automotive GmbH | Wärmekompensationsanordnung |
Also Published As
Publication number | Publication date |
---|---|
ATE391850T1 (de) | 2008-04-15 |
EP1450034B1 (de) | 2008-04-09 |
DE10307816A1 (de) | 2004-09-02 |
DE50309573D1 (de) | 2008-05-21 |
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