EP1095215B1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1095215B1 EP1095215B1 EP99962124A EP99962124A EP1095215B1 EP 1095215 B1 EP1095215 B1 EP 1095215B1 EP 99962124 A EP99962124 A EP 99962124A EP 99962124 A EP99962124 A EP 99962124A EP 1095215 B1 EP1095215 B1 EP 1095215B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- valve
- injection valve
- actuator
- induction loop
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 77
- 238000002347 injection Methods 0.000 title claims description 30
- 239000007924 injection Substances 0.000 title claims description 30
- 238000013016 damping Methods 0.000 claims description 41
- 230000006698 induction Effects 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 24
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 230000004907 flux Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000004804 winding 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
- 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
- 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
Definitions
- the invention is based on a fuel injector according to the preamble of claim 1.
- a fuel injector is based the genus of claim 1 known.
- the one from this The resulting damping device consists of a cup-shaped damping element, one weak compression spring with low spring coefficient and a strong compression spring with a high spring coefficient.
- the the two compression springs are axially offset from one another and enclose the valve needle in sections.
- the Pot-shaped damping element is located between the two compression springs, the two Compression springs in the opposite direction on the cup-shaped trained damping element act and each the cup-shaped damping element on the opposite side, attached to the valve needle, Support support elements.
- the weak compression spring works closing the fuel injector, the strong Compression spring acts to open the fuel injector opposite.
- the known fuel injection valve results the following disadvantages: due to the spring force and the shear force the damping force is fixed and can therefore do not adapt to the operating parameters of the internal combustion engine, in particular, it is not variably adjustable in time. There the fuel flow in the direction of the sealing seat through the Damping disc is affected, it happens Flow eddies in the fuel, thereby increasing the malleability of the Fuel outflow is deteriorated. An Indian WO89 / 10478 as an alternative proposed fuel inlet below the damping plate is impractical because of it the size of the drain-side valve housing clearly is enlarged. Due to the additional mechanical The fuel injector is also a component more prone to wear, especially since the damping force depending on the width of the between the edge of the Damping element and the inner wall of the valve housing trained gap.
- the fuel injector according to the invention with the characteristic features of claim 1 has in contrast the advantage that the fuel injector in is debounced satisfactorily. Furthermore requires the electromagnetic damping device is not mechanical stressed components such as compression and disc springs and does not require damping fluid. Furthermore, it is Damping device is temperature stable and enables variable damping force.
- the damping device advantageously has a Excitation coil for generating a magnetic field and at least an electrically conductive arranged on the valve needle Induction loop on. This can do that for damping required electromagnetic field in a simple manner be generated. In addition, the damping force can be applied directly act on the valve needle.
- the electrical conductivity the induction loop is larger than the electrical one Conductivity of the valve needle. This creates one in the Induction loop induced ring voltage one in the Induction loop led electrical induction current.
- the induction loop from the Valve needle is electrically insulated. This will make the Electromotive force is used particularly well.
- the induction loop is sleeve-shaped and the valve needle encloses in sections. This results in one to the Shape of the fuel injector adapted to the shape Induction loop, which is also easy to attach enabled on the valve needle.
- the axial length of the induction loop is advantageous along the valve axis less than the axial length of the Excitation coil along the valve axis. This will make one greater ring tension induced in the sleeve.
- a control unit advantageously has a current-controlled one Control of the excitation coil and / or the actuator one Current regulation on. This will make an exact, quick responsive control of those acting on the valve needle Damping force enables.
- the excitation coil is advantageous for taking advantage of the Compressing the actuator resulting displacement current connected in series with the actuator. This allows the in energy stored in the actuator for damping the valve needle use.
- Fig. 1 shows an axial excerpt Sectional view of an inventive Fuel injector 1.
- the fuel injector 1 serves in particular for the direct injection of fuel, especially of gasoline, into a combustion chamber mixture-compressing, spark-ignited internal combustion engine as so-called gasoline direct injection valve.
- fuel injector 1 is also suitable for other use cases.
- the fuel injector 1 is an internal one Fuel injector 1 executed.
- the Fuel injector 1 has a valve housing 2 and an end plate 3. Located in valve housing 2 one by means of an axially movable valve needle 4 actuatable valve closing body 5, which in the illustrated Embodiment with the valve needle 4 in one piece is trained.
- the valve closing body 5 is frustoconical tapering in the spray direction educated.
- the valve closing body 5 acts with one a valve seat surface 7 formed to a valve seat body 6 a sealing seat together.
- the valve seat body 6 attached in the front part of the valve housing 2.
- a contact element 12 On an inner contact surface 10, which is connected to a projection 11 of the valve housing 2 is formed Contact element 12.
- the contact element 12 be formed plastically or elastically deformable.
- a Intermediate plate 13 is by a screw element 14 in Interior 16 of the fuel injector 1 attached. The intermediate plate 13 is through the screw element 14 pressed against the contact element 12, whereby the Contact element 12 deformed. To the strength necessary for it to apply, the screw member 14 is in a Internal thread 15, which on the inside of the valve housing 2nd is formed, screwed.
- a piezoelectric actuator 21 On the inflow-side end face 20 of the intermediate plate 13 is a piezoelectric actuator 21, and on the sealing face end face of the intermediate plate 13 is located a compression spring 23.
- the tubular housing wall 24 is with an inflow-side housing plate 25 and one sealing seat-side housing plate 26 connected.
- the tubular housing wall 24, the inflow-side housing plate 25 and the sealing seat side housing plate 26 form together an inner housing 24, 25, 26.
- the actuator 21 acts here the inflow-side housing plate 25 onto the inner housing 24, 25, 26 and the compression spring 23 acts via the sealing seat side Housing plate 26 on the inner housing 24, 25, 26 a.
- the sealing seat-side housing plate 26 At the the valve seat 4 is the sealing seat-side housing plate 26 attached.
- the fuel is through a bore 30 in the End plate 3 in the interior 16 of the Fuel injector 1 passed. From there it gets over at least one bore 31 in the intermediate plate 13 in Direction of the valve seat 7 and valve closing body 5 formed sealing seat headed. When actuating the actuator 21 this expands, causing the inner housing 24, 25, 26 moves in the direction of the end plate 3 and the attached to the valve needle 4 valve closing body 5 of the valve seat surface 7 lifts, whereby the sealing seat opens. Over the gap between Valve seat 7 and valve closing body 5 arrives Fuel in a spray channel 32, which makes it to Leakage of fuel from fuel injector 1 comes into a combustion chamber of an internal combustion engine.
- the fuel injector 1 is closed via the Compression spring 23, which counter to the actuator 21 on the Inner housing 24, 25, 26 acts, which the Inner housing 24, 25, 26 in the direction of the valve seat body 6 moves and the valve closing body 5 of the valve needle 4th on the valve seat surface 7 of the valve seat body 6 is moved. This excludes it Valve seat 7 and valve closing body 5 formed Sealing seat.
- the electromagnetic damping device according to the invention to dampen the movement of the valve needle 4 is in this Embodiment of sleeves 40a to 40c and one Excitation coil 41, which in a circumferential groove 42 on the Valve housing 2 of the fuel injector 1 is wound is formed.
- the movement of the Valve needle 4 usually by a suitable stop limited. In the illustrated embodiment, this is Limitation simplified by the stop on the inflow side Housing plate 25 shown on stop elements 43a, 43b.
- the fuel injector 1 closes, the strikes Valve closing body 5 of the valve needle 4 on the Valve seat surface 7 of the valve seat body 6. Without one damping device 40a to 40c, 41 comes it because of the existing when opening or closing Movement pulse for bouncing the valve needle 4, whereby the Sealing seat not with a constant opening cross-section is opened or not closed abruptly.
- FIG. 2 shows the wiring of the actuator 21 and the excitation coil 41 in a simplified manner.
- electrical feed lines 50a, 50b are led into the fuel injector 1 to the actuator 21.
- electrical feed lines 50c, 50d are led into the fuel injection valve 1 to the excitation coil 41.
- the electrical leads 50a to 50d are connected to a control device 51. It is advantageous if the control device 51 controls the coil 41 in a current-controlled manner, since this counteracts the coil inductance 11 when the current intensity I L changes due to a correspondingly high voltage of the control device 51, which is supplied to the coil 41 via the electrical leads 50c, 50d can be.
- control unit 51 makes it possible, depending on the operating variables of the internal combustion engine, to actuate the actuator 21 and the coil 41 in a coordinated manner in order to prevent the valve needle 4 from bouncing.
- FIG. 3 shows a schematic diagram to explain the functional principle of the damping device of the fuel injector 1.
- a current I L flowing in the excitation coil 41 generates a radially symmetrical magnetic field B which is proportional to the coil current I L.
- the finite length l L of the coil 41 in the axial direction results in an inhomogeneous magnetic field B , with a significant change in the magnetic field B on the coil axis 55 with a change in location in the order of the length l L of the coil 41.
- There is an induction loop 56 in the magnetic field B which represents the edge of a surface A which is not necessarily flat.
- One of the two sides of surface A can be arbitrarily defined as the outside, whereby a direction 57 of surface A is predetermined.
- a direction of rotation 58 of the induction loop 56 is given by the direction 57 of the area A.
- the magnetic field B which penetrates the surface A generates a magnetic flux ⁇ through the induction loop 56.
- the magnetic flux ische through the induction loop 56 is changed.
- Faraday's law of induction a temporal change in the magnetic flux ⁇ flowing through the induction loop 56 generates in the induction loop 56 an electrical ring voltage opposite to the sense of rotation 58 of the induction loop 56, which is proportional to the change in the magnetic flux ⁇ over time.
- the ring voltage generates an electric current in the induction loop 56 which, when the magnetic flux ⁇ increases, is directed counter to the sense of rotation 58, as a result of which a magnetic field B ′ is generated. If the magnetic flux ⁇ increases (decreases) over time, the magnetic field B ' is oriented in the opposite (same) direction as the magnetic field B. In the case of oppositely directed magnetic fields B , B ' , the induction loop 56 is repelled by the excitation coil 41; in the case of rectified magnetic fields B , B' , the induction loop 56 is attracted by the excitation coil 41.
- the induction loop 56 when the magnetic flux ⁇ is increased, the induction loop 56 is repelled by the excitation coil 41 and when the magnetic flux ⁇ is reduced, the induction loop 56 is attracted by the excitation coil 41.
- the associated force K 0 is used according to the invention for damping the valve needle 4.
- FIG. 4 shows diagrams by means of which the functioning of the damping device of the fuel injector 1 according to the invention is explained.
- the time t is plotted on the abscissa and the various operating variables of the fuel injector 1 are plotted on the ordinate.
- the mode of operation of the damping device of the fuel injection valve 1 can accordingly be transferred to the opening process.
- the actuator 21 is acted upon by an electrical actuator voltage U A until the time t a . Since the actuator voltage U A is constant up to the point in time t a , the position of the valve needle 4 also remains unchanged, which corresponds to a constant valve needle stroke h.
- the actuator 21 is switched off.
- fuel injector 1 is closed, whereby stroke h of valve needle 4 decreases.
- the valve needle 4 bounces, as a result of which the valve needle 4 is lifted out of the sealing seat, which corresponds to additional stroke movements 60a to 60d.
- FIG. 5 shows an alternative circuit for wiring the fuel injection valve 1 according to the invention, in which the excitation coil 41 is connected in series with the actuator 21 in order to utilize the displacement current generated when the actuator 21 is compressed.
- An equivalent circuit diagram consisting of a loss-free inductance L and a loss resistor R L is shown for the excitation coil 41, while an equivalent circuit diagram consisting of a loss-free capacitance C and a loss resistor R A is shown for the actuator 21.
- the function is based on the diagrams shown in FIG the damping device according to the invention shown when this is connected as in FIG. 5. To this Embodiment will open the Fuel injector 1 considered. The Functional principle can also be on the closing of the Fuel injector 1 are transmitted. In the Diagrams are the time t on the abscissa plotted.
- the invention is not based on those described Embodiments limited.
- the is particularly suitable Invention also for an outside opening Fuel injector 1.
- the damping device must not necessarily directly on the valve needle 4 act and can also be different in the Fuel injector 1 may be arranged.
- At the Valve needle 4 can also be used instead of an induction loop 56 a permanent magnet can be arranged together with the Excitation coil 41 an electromagnetic damping device forms.
- the induction loop 56 can instead of through sleeves 40a - 40c can also be formed by a wound coil.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- einen auszugsweisen axialen Schnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils, wobei das Brennstoffeinspritzventil nach innen öffnend ausgeführt ist;
- Fig. 2
- ein Ausführungsbeispiel einer Steuerung eines erfindungsgemäßen Brennstoffeinspritzventils;
- Fig. 3
- eine Prinzipskizze zur Erläuterung der Funktionsweise eines Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils;
- Fig. 4
- Diagramme zur Erläuterung eines Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils;
- Fig. 5
- einen Schaltplan für ein Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils; und
- Fig. 6
- Diagramme zur Erläuterung eines Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils.
Claims (11)
- Brennstoffeinspritzventil (1), insbesondere Einspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem piezoelektrischen oder magnetostriktiven Aktor (21), einem von dem Aktor (21) mittels einer Ventilnadel (4) betätigbaren Ventilschließkörper (5), der mit einer Ventilsitzfläche (7) zu einem Dichtsitz zusammenwirkt und einer Dämpfungseinrichtung zum Dämpfen der Bewegung der Ventilnadel (4),
dadurch gekennzeichnet, daß die Dämpfungseinrichtung (41, 56) elektromagnetisch arbeitet. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß die Dämpfungseinrichtung (41, 56) eine Erregerspule (41) zum Erzeugen eines Magnetfeldes und zumindest eine an der Ventilnadel angeordnete, elektrisch leitende Induktionsschleife (56, 40a - 40c) aufweist. - Brennstoffeinspritzventil nach Anspruch 2,
dadurch gekennzeichnet, daß die Erregerspule (41) auf ein Ventilgehäuse (2) des Brennstoffeinspritzventils (1) gewickelt ist, wobei das Ventilgehäuse (2) hierfür eine umlaufende Nut (42) aufweist. - Brennstoffeinspritzventil nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß die elektrische Leitfähigkeit der Induktionsschleife (56, 40a - 40c) größer ist als die elektrische Leitfähigkeit der Ventilnadel (4). - Brennstoffeinspritzventil nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß die Induktionsschleife (56, 40a - 40c) von der Ventilnadel (4) elektrisch isoliert ist. - Brennstoffeinspritzventil nach einem der Ansprüche 2 bis 5,
dadurch gekennzeichnet, daß die Induktionsschleife (40a - 40c) hülsenförmig ausgebildet ist und die Ventilnadel (4) abschnittsweise umschließt. - Brennstoffeinspritzventil nach Anspruch 6,
dadurch gekennzeichnet, daß die Länge der hülsenförmigen Induktionsschleife (40a - 40c) entlang der Ventilachse kleiner als die Länge der Erregerspule (41) entlang der Ventilachse ist. - Brennstoffeinspritzventil nach einem der Ansprüche 2 bis 5,
dadurch gekennzeichnet, daß die Induktionsschleife (56) aus einer kurzgeschlossenen Induktionsspule besteht. - Brennstoffeinspritzventil nach einem der Ansprüche 2 bis 8,
dadurch gekennzeichnet, daß die Erregerspule (41) und/oder der Aktor (21) über ein Steuergerät (51) angesteuert sind. - Brennstoffeinspritzventil nach Anspruch 9,
dadurch gekennzeichnet, daß das Steuergerät (51) zur stromgeregelten Ansteuerung der Erregerspule (41) und/oder des Aktors (21) eine Stromregelung aufweist. - Brennstoffeinspritzventil nach einem der Ansprüche 2 bis 10,
dadurch gekennzeichnet, daß die Erregerspule (41) zur Ausnützung des beim Zusammendrücken des Aktors (21) entstehenden Verschiebungsstromes mit dem Aktor (21) in Reihe geschaltet ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19921489A DE19921489A1 (de) | 1999-05-08 | 1999-05-08 | Brennstoffeinspritzventil |
| DE19921489 | 1999-05-08 | ||
| PCT/DE1999/003869 WO2000068564A1 (de) | 1999-05-08 | 1999-12-02 | Brennstoffeinspritzventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1095215A1 EP1095215A1 (de) | 2001-05-02 |
| EP1095215B1 true EP1095215B1 (de) | 2004-08-11 |
Family
ID=7907576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99962124A Expired - Lifetime EP1095215B1 (de) | 1999-05-08 | 1999-12-02 | Brennstoffeinspritzventil |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6612539B1 (de) |
| EP (1) | EP1095215B1 (de) |
| JP (1) | JP2002544426A (de) |
| DE (2) | DE19921489A1 (de) |
| WO (1) | WO2000068564A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003016707A1 (de) * | 2001-08-08 | 2003-02-27 | Siemens Aktiengesellschaft | Dosiervorrichtung |
| DE10153630A1 (de) | 2001-10-31 | 2003-07-10 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| US7131423B2 (en) * | 2004-10-06 | 2006-11-07 | Point-Man Aeronautics, L.L.C. | Fuel injection spark ignition system |
| FR2916810B1 (fr) * | 2007-05-31 | 2009-08-28 | Renault Sas | Dispositif d'injection de fluide |
| US20090057438A1 (en) * | 2007-08-28 | 2009-03-05 | Advanced Propulsion Technologies, Inc. | Ultrasonically activated fuel injector needle |
| WO2009158147A1 (en) * | 2008-06-27 | 2009-12-30 | Cameron International Corporation | Systems and devices including valves coupled to electric devices and methods of making, using, and operating the same |
| US8069836B2 (en) * | 2009-03-11 | 2011-12-06 | Point-Man Aeronautics, Llc | Fuel injection stream parallel opposed multiple electrode spark gap for fuel injector |
| US20130068200A1 (en) * | 2011-09-15 | 2013-03-21 | Paul Reynolds | Injector Valve with Miniscule Actuator Displacement |
| US9115678B2 (en) | 2012-08-09 | 2015-08-25 | Ford Global Technologies, Llc | Magnetized fuel injector valve and valve seat |
| US9385300B2 (en) * | 2013-02-06 | 2016-07-05 | Great Plains Diesel Technologies, L.C. | Magnetostrictive actuator |
| EP2860386A1 (de) | 2013-10-10 | 2015-04-15 | Continental Automotive GmbH | Injektor für eine Brennkraftmaschine |
| US9157349B2 (en) * | 2014-03-04 | 2015-10-13 | Ali Farzad Farzaneh | High power two cycle engine (without oil and gasoline/benzene mixing) |
| DE102015219568B4 (de) * | 2015-10-09 | 2017-06-08 | Continental Automotive Gmbh | Aktuator mit Ventileinheit für piezoservobetriebenen Injektor |
| CN116753097B (zh) * | 2023-06-14 | 2025-03-21 | 浙江吉利控股集团有限公司 | 喷油器、发动机以及车辆 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3501077A1 (de) * | 1985-01-15 | 1986-07-17 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Pulsventil |
| JPS61167364A (ja) * | 1985-01-18 | 1986-07-29 | Diesel Kiki Co Ltd | 高速電磁弁 |
| DE3533975A1 (de) * | 1985-09-24 | 1987-03-26 | Bosch Gmbh Robert | Zumessventil zur dosierung von fluessigkeiten oder gasen |
| JPS63143361A (ja) * | 1986-12-04 | 1988-06-15 | Aisan Ind Co Ltd | インジエクタ用バルブの制御方法 |
| US4878650A (en) * | 1988-04-29 | 1989-11-07 | Allied-Signal Inc. | Armature with shear stress damper |
| DE3833093A1 (de) * | 1988-09-29 | 1990-04-12 | Siemens Ag | Fuer verbrennungskraftmaschine vorgesehene kraftstoff-einspritzduese mit steuerbarer charakteristik des kraftstoffstrahls |
| US4994698A (en) * | 1990-06-13 | 1991-02-19 | General Electric Company | Vibratory linear motor system |
| DE19546033A1 (de) * | 1995-12-09 | 1997-06-12 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE19735232A1 (de) * | 1997-08-14 | 1999-02-18 | Bosch Gmbh Robert | Verfahren zur Dämpfung eines Brennstoffeinspritzventiles und Brennstoffeinspritzventil |
-
1999
- 1999-05-08 DE DE19921489A patent/DE19921489A1/de not_active Withdrawn
- 1999-12-02 WO PCT/DE1999/003869 patent/WO2000068564A1/de not_active Ceased
- 1999-12-02 US US09/743,313 patent/US6612539B1/en not_active Expired - Fee Related
- 1999-12-02 DE DE59910219T patent/DE59910219D1/de not_active Expired - Fee Related
- 1999-12-02 EP EP99962124A patent/EP1095215B1/de not_active Expired - Lifetime
- 1999-12-02 JP JP2000617320A patent/JP2002544426A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000068564A1 (de) | 2000-11-16 |
| US6612539B1 (en) | 2003-09-02 |
| DE19921489A1 (de) | 2000-11-09 |
| EP1095215A1 (de) | 2001-05-02 |
| DE59910219D1 (de) | 2004-09-16 |
| JP2002544426A (ja) | 2002-12-24 |
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