EP1607619A2 - Kraftstoffeinspritzventil - Google Patents
Kraftstoffeinspritzventil Download PDFInfo
- Publication number
- EP1607619A2 EP1607619A2 EP05103114A EP05103114A EP1607619A2 EP 1607619 A2 EP1607619 A2 EP 1607619A2 EP 05103114 A EP05103114 A EP 05103114A EP 05103114 A EP05103114 A EP 05103114A EP 1607619 A2 EP1607619 A2 EP 1607619A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- valve needle
- piston
- power transmission
- transmission device
- 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.)
- Ceased
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000006378 damage Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 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
- 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
- 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
- F02M2200/70—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
- F02M2200/708—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with hydraulic chambers formed by a movable sleeve
Definitions
- the invention is based on a fuel injection valve after Preamble of claim 1.
- the valve needle closes depending on their position injection ports of the injector or are these free.
- the actuator usually a piezoelectric actuator is used.
- the piezoelectric actuator is in the known device arranged in a linear extension of the valve needle and with its end portion facing away from the valve needle fixed in the device (Aktorlager).
- the valve needle facing part of the piezoelectric actuator is connected to the Coupled valve needle.
- the known piezoelectric actuators have the property that they when energized, d. H.
- the invention according to claim 1 is advantageous in that by the displacement of the anchorage or fixation of the actuator the electrical Control of the actuator can be changed so that this only in those times when the fuel injection device is opened is, power required, in the off state of the injector, however, is de-energized.
- the power transmission device may be a fixed mechanical connection, or, as provided in claim 2, a hydraulic converter.
- the invention is not limited to piezoelectric actuators.
- the embodiment according to claim 2 is advantageous that a Adaptation of different stroke paths between the actuator and the valve needle by a suitable choice of the transmission ratio of a hydraulic converter can be made, with no direction reversal of the movement takes place.
- the transducer also allows for manufacturing tolerances with respect to the Distance between which due to the electrical control in its position changing end of the piezoelectric actuator and the actuator facing the end of the To compensate for valve needle, if, as provided in the embodiment, the In operation, the converter is filled with fuel under high pressure and is therefore in can adjust its length automatically.
- the injection device 1 is essentially composed of two larger assemblies 2 and 3, which after their completion with interposition egg ner channel plate 4 are connected to each other, in the example by means of a mounting sleeve. 5
- the lower assembly 2 contains in a valve housing 8 substantially a valve needle 10 which closes injection ports 12 in its closed position. Radially outside a sealing edge 14 is a pressure shoulder 16. Der Opening operation of the valve needle 10 then begins when the on the pressure shoulder 16 acting fuel pressure generates a force that is greater than a valve needle 10 in the closing direction acting force.
- actuator 30 prevents the opening of the valve needle 10, as long as the actuator is not electrically driven in the opening direction.
- valve needle 10 is formed as a piston 18 which in a Guide sleeve 19 slides, by a spring 20 in the direction of the channel plate 4th is biased, where it by means of a biting edge (sharp edged edge) sealingly applied.
- the spring 20 is supported on the valve needle 10 and acts on these in the closing direction.
- the upper assembly 3 has an upper housing 28 which in a centric, cylindrical recess 29 contains the actuator 30, more precisely piezoelectrically active parts.
- the actuator 30 is centric in its longitudinal direction pierced. Its the injection openings 12 facing away from the end is of a Cover plate 32 is covered, which is pierced, and a pull rod 33 protrudes through the Plate 32 up through and there is against a downward shift secured.
- the lower end of the actuator 30 is supported on a in the upper housing part 28th anchored support plate 35 from.
- the pull rod 33 protrudes through the support plate 35 through down and is there connected to a transformer piston 38.
- the upper end said spring 40 is supported on the support plate 35 from. It is advantageous between the transformer piston 38 and the support plate 35 is still a transformer piston 38th down biasing spring 42 is provided, so that the pull rod 33 always at least something on train is claimed.
- the transformer piston 38 and the piston 18 are elements of a hydraulic converter 44.
- the channel plate 4 has a central bore 45, the two through the Guide sleeves 19 and 39 and the respective end faces of the piston 18 and the Transducer piston 38 formed transducer spaces 46 and 47 interconnects, the thus form a common converter space.
- a plurality of further holes 50 are provided, the Rooms 51 and 52 below and above the channel plate 4 radially outside the B formulatekanten the corresponding guide sleeve 19 and 39 connect together.
- the opening stroke of the valve needle 10 should be greater than that maximum stroke of the actuator 30, the diameter of the piston 18 is smaller than the Diameter of the transmission piston 38, so that through the hydraulic converter 44 a speed and distance translation to the valve needle 10 out.
- the power supply of the actuator 30 via electrical connections 55, which are guided through a sealed against fuel channel to the outside.
- the supply of fuel to use the recess 29, in which the actuator 30th located.
- the fuel passes from a high-pressure accumulator 70 (common rail) via a high pressure line 72 to the recess 29 and from there via not shown recesses between the bearing plate 32 and the upper end of the Pulling rod 33 in the inner pierced part of the actuator, from there into the room 52, from there via the holes 50 in the room 51 and from there to the bottom End region of the valve needle 10.
- the compound at the upper end of the tie rod 33 so be formed that they exert only compressive forces on the actuator 30 allowed, so in the opposite direction relative to the plate 32 is displaceable. It is expedient, however, and this is also provided in a manner not shown that the pull rod 33 is fixed immovably relative to the plate 32. Therefore, one is Not shown bias spring provided, the actuator 30 so much to pressure claims that this compressive force is not imposed by others on the actuator 30 in FIG opposing forces can be overcome. To the In particular, the forces of the pressure shoulder 16 in consequence of the Pressure of the fuel exerted on the closed valve needle 10, upward in Opening direction acting force. The actuator itself can provide the mentioned compressive force overcome.
- the rigidly fixed in the injection device end of the Actuator 30 of the valve needle 10 facing, and that end of the actuator, the Operation of the valve needle 10 performs, the valve needle 10 is remote. It will thus one generated by the actuator 30 by its extension in the longitudinal direction Compressive force transmitted via the pull rod 33 to the valve needle 10 as a pulling force to to open the valve needle.
Abstract
Description
Es zeigt
Claims (2)
- Kraftstoffeinspritzvorrichtung (1) mit einer direkt gesteuerten Ventilnadel (10), die in Abhängigkeit von ihrer Stellung eine Einspritzöffnung (10) zum Einspritzen von Kraftstoff in einen Brennraum öffnet oder schließt, wobei zum Betätigen der Ventilnadel (10) ein elektrisch betriebener Aktor (30) einerseits mit der Ventilnadel (10) über eine Kraftübertragungsvorrichtung gekoppelt und andererseits in der Vorrichtung fest verankert ist,
dadurch gekennzeichnet, dass das mit der Kraftübertragungsvorrichtung gekoppelte Element des Aktors (30) der Kraftübertragungsvorrichtung abgewandt ist, und das in der Vorrichtung fest verankerte Element des Aktors (30) der Kraftübertragungsvorrichtung zugewandt ist. - Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Kraftübertragungsvorrichtung ein hydraulischer Wandler (44) ist, der einen mit dem Aktor (30) verbundenen Übersetzerkolben (38) und einen mit der Ventilnadel (10) verbundenen Kolben (18) aufweist, zwischen denen ein gemeinsamer Wandlerraum angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004028885 | 2004-06-15 | ||
DE200410028885 DE102004028885A1 (de) | 2004-06-15 | 2004-06-15 | Kraftstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1607619A2 true EP1607619A2 (de) | 2005-12-21 |
EP1607619A3 EP1607619A3 (de) | 2008-08-27 |
Family
ID=34980100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05103114A Ceased EP1607619A3 (de) | 2004-06-15 | 2005-04-19 | Kraftstoffeinspritzventil |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1607619A3 (de) |
DE (1) | DE102004028885A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014139274A1 (zh) * | 2013-03-14 | 2014-09-18 | 天津大学 | 双通道压电喷油器 |
CN111051681A (zh) * | 2017-07-20 | 2020-04-21 | 利勃海尔零部件代根多夫有限公司 | 用于控制喷射器的装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4101076A (en) * | 1975-04-03 | 1978-07-18 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
DE19843535A1 (de) * | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19915210A1 (de) * | 1999-04-03 | 2000-10-05 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19947779A1 (de) * | 1999-10-02 | 2001-04-12 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
2004
- 2004-06-15 DE DE200410028885 patent/DE102004028885A1/de not_active Withdrawn
-
2005
- 2005-04-19 EP EP05103114A patent/EP1607619A3/de not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4101076A (en) * | 1975-04-03 | 1978-07-18 | Teledyne Industries, Inc. | Piezoelectric fuel injector valve |
DE19843535A1 (de) * | 1998-09-23 | 2000-03-30 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19915210A1 (de) * | 1999-04-03 | 2000-10-05 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19947779A1 (de) * | 1999-10-02 | 2001-04-12 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014139274A1 (zh) * | 2013-03-14 | 2014-09-18 | 天津大学 | 双通道压电喷油器 |
US9447761B2 (en) | 2013-03-14 | 2016-09-20 | Tianjin University | Dual-channel piezoelectric injector |
CN111051681A (zh) * | 2017-07-20 | 2020-04-21 | 利勃海尔零部件代根多夫有限公司 | 用于控制喷射器的装置 |
CN111051681B (zh) * | 2017-07-20 | 2022-04-19 | 利勃海尔零部件代根多夫有限公司 | 用于控制喷射器的装置 |
US11608805B2 (en) | 2017-07-20 | 2023-03-21 | Liebherr-Components Deggendorf Gmbh | Device for controlling an injector |
Also Published As
Publication number | Publication date |
---|---|
DE102004028885A1 (de) | 2006-01-05 |
EP1607619A3 (de) | 2008-08-27 |
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