EP1043497B1 - Schaltventil - Google Patents
Schaltventil Download PDFInfo
- Publication number
- EP1043497B1 EP1043497B1 EP00107266A EP00107266A EP1043497B1 EP 1043497 B1 EP1043497 B1 EP 1043497B1 EP 00107266 A EP00107266 A EP 00107266A EP 00107266 A EP00107266 A EP 00107266A EP 1043497 B1 EP1043497 B1 EP 1043497B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve plate
- flow channel
- control valve
- mouth
- 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
- 238000002347 injection Methods 0.000 claims description 29
- 239000007924 injection Substances 0.000 claims description 29
- 239000000446 fuel Substances 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 14
- 239000012530 fluid Substances 0.000 description 4
- 208000031872 Body Remains Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000284 resting effect 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
-
- 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
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S239/00—Fluid sprinkling, spraying, and diffusing
- Y10S239/90—Electromagnetically actuated fuel injector having ball and seat type valve
Definitions
- the invention relates to a switching valve according to the preamble of claim 1.
- Such a switching valve is known and is used in particular for actuation of valves, such as injection valves in internal combustion engines, used.
- the switching valve has one Flow channel on, one end of which with a pressure chamber of the actuating valve can be connected.
- the other end of the flow channel opens into a work space provided on the switching valve, in which a valve plate for closing the flow channel is arranged.
- the valve plate can be between a closed position and a release position can be moved back and forth.
- opening the Flow channel can be the pressure chamber of the valve to be actuated, for example connected to a discharge line or to the environment become.
- the known switching valve is used in an injection valve in a diesel engine used the injection timing and the injection duration of the to determine the fuel to be injected through the injection valve can.
- To close the injector of the injector is one provided in a needle guide slidably mounted nozzle needle between the injector and the pressure chamber with which the flow channel of the switching valve is connected, hydraulically clamped is that the nozzle needle keeps the injector closed. By opening the flow channel, this relaxes in the pressure chamber located fluid, so that the nozzle needle releases the injection nozzle. To the closing of the flow channel builds up inside the pressure chamber pressure again through which the nozzle needle returns to its die Injector closing position is moved.
- a switching valve of the type mentioned in the opening paragraph is in EP-A-0 851 115 described.
- the closing element is located completely within the through hole of the radially protruding Federal.
- the valve plate is dimensioned so that it does not radially extends beyond this through opening.
- valve body is designed such that the valve plate in its Closed position on the protruding from the through opening Closing element is present, which closes the mouth of the flow channel, being simultaneously between the radially through the through opening extending valve plate and the valve body a gap remains.
- the mouth of the flow channel closed by the separate closing element which between the valve plate and the mouth of the flow channel is. If the valve plate is moved to the release position, this is because Closing element without pretension at the mouth of the flow channel so that the fluid past the closing element from or into the flow channel can flow.
- the valve plate is returned to its closed position moves, she takes the closing element, which in turn turns on aligns the mouth of the flow channel and closes it as soon as the valve plate has reached its final closed position.
- the closing element can move relative to the valve plate is an exact one Guiding and positioning of the valve plate relative to the mouth of the Flow channel no longer required, so that both the valve plate as well as the guide for the valve plate can be made less precisely must than with the known switching valves.
- the Freedom of movement of the closing element relative to the mouth of the flow channel achieved that the closing element by the inflowing or flowing fluid is moved to a position in which it is even rests against the mouth and seals it properly as soon as it is pressed against the mouth by the valve plate and closes it.
- Valve plate in its closed position on the out of the through opening protruding closing element sealingly abuts when it muzzle closes the flow channel without, however, resting on the valve body, so that there is a gap between the valve plate and the valve body remains, it is ensured that the total closing force the valve plate is only transferred to the closing element, whereby a particularly good sealing effect can be achieved.
- the fluid from the Gap between the valve plate and the valve body are promoted, which slows down the closing movement of the valve plate and any oscillating movements of the valve plate that occur after the impact on the closing element by springing back of the valve plate arise, be dampened.
- valve ball As the closing element, due to their spherical shape in any position relative to the mouth of the flow channel at the mouth is linear.
- the valve plate preferably has a Recess for the closing element on the mouth of the flow channel is aligned.
- the recess and the mouth Form the recess and / or the mouth conically.
- the depth of the The mouth is larger than the stroke of the valve plate. So that the closing element, for example a bullet held in the mouth. simultaneously the closing element in the mouth can be parallel to the valve plate move so that it can center in the mouth.
- the closing element evenly on the wall of the recess created and held in a defined position.
- a conical recess and one with a conical is suitable Sealing surface provided mouth when using a valve ball as Closing element that is special due to its surface curvature well on the inclined walls of the recess and the mouth snugly.
- Switch valves are on the inner surface facing the flow channel of the work space provided resilient elements on the valve plate are attached and guide them, so that a displacement of the valve plate is prevented transversely to their direction of movement.
- the valve plate is preferably in its closed position by a compression spring held and with the help of an actuator in their release position moves, since it is ensured that the switching valve in the event of a failure of the Actuator remains closed.
- the switching valve according to the invention is the working area by a one or multi-part valve body, a ring adjacent to the valve body and an adjacent ring Disc limited.
- the figure shows a switching valve 10 in a sectional side view.
- the switching valve 10 is on a holding body 12 of an injection valve 14 arranged.
- In the holding body 12 is a extending in the longitudinal direction Through hole 16 formed on the in the figure End face of the holding body 12 shown above ends.
- a piston 18 is inserted along the through bore 16 can be moved back and forth and with one end (not shown) on the end face of a nozzle needle (not shown) with which the injection nozzle (not shown) of the injection valve 14 can be locked.
- the switching valve 10 has a cylindrical valve body 20 which is inserted into the through hole 16 of the holding body 12.
- the inner circumference of the through bore 16 and that of the valve body 20 facing end of the piston 18 form a high pressure chamber 22, the purpose of which will be explained later.
- the high pressure chamber 22 is under high pressure fuel filled along the nozzle needle and the piston 18 through the through hole 16 into the cavity 22 has arrived.
- valve body 20 In the valve body 20 is an extending in the longitudinal direction Flow channel 24 formed, which with the high pressure chamber 22 in connection stands and in one on the injection valve 14 facing away from the end face of the valve body 20 shown above conical sealing surface 26 ends.
- a collar 28 On the top face of the valve body 20 is a collar 28 is formed, which protrudes in the radial direction and in the middle of which is arranged concentrically to the conical sealing surface 26 Through opening 30 is formed.
- the injector 14 the flat side of the collar 28 facing away lies in turn on a ring 32, which is also arranged concentrically to the conical sealing surface 26.
- the ring 32 is covered by a circular disk 34, the one has through opening 36 in its center.
- At the injector 14 facing away from the flat side of the second disc 34 are one annular magnet coil 38 and a hollow cylindrical housing 40 provided, both of which are arranged concentrically around the opening 36.
- the collar 28, the ring 32 and the disc 34 delimit a working space 42, in which a circular valve plate 44 is received whose valve body 20 facing front one to the conical Sealing surface 26 aligned recess 46 is formed has a frustoconical cross-sectional shape. Furthermore are with connected to the rear of the valve plate 44 a plurality of resilient elements 48, which protrude downward from the disk 34 and the valve plate 44 hold in a defined position concentric to the conical sealing surface 26. Between the recess 46 of the valve plate 44 and the conical Sealing surface 26 is arranged a valve ball 50 with which the flow channel 24 can be closed.
- the valve plate 44 is driven by the force F of a compression spring (not shown) held in a closed position in which it is under tension the valve ball 50 abuts and against the conical sealing surface 26 presses so that the flow channel 24 is closed in a fluid-tight manner.
- a compression spring (not shown) held in a closed position in which it is under tension the valve ball 50 abuts and against the conical sealing surface 26 presses so that the flow channel 24 is closed in a fluid-tight manner.
- To the To open flow channel 24 can be made of a ferromagnetic Material manufactured valve plate 44 using the solenoid 38 against the Force of the compression spring and the resilient elements 48 into a release position in which the valve plate 44 and the valve ball 50 are lifted off the valve body 20.
- the maximum stroke of the valve plate 44 by the height of the ring 32 in the direction of movement of the valve plate 44 is specified, is dimensioned so that the Valve ball 50 between the recess 46 and the conical sealing surface 26 can move freely, a jumping out of the valve ball 50 from the Recess 46 and the conical sealing surface 26 is prevented.
- valve plate 44 As long as the valve plate 44 is in its closed position, the Flow channel 24 through the pre-stressed on the conical Sealing surface 26 adjacent valve ball 50 closed. This prevents that the fuel in the high-pressure chamber 22 is about the switching valve 10 can escape, so that the piston 18 in its lowered Position persists. In this position, the piston 18 holds the nozzle needle in a position in which it closes the injection nozzle, whereby the nozzle needle due to the pressure applied to the injection nozzle of the fuel supplied to the injection valve 14 against the piston 18 is biased, that is, hydraulically between the high pressure chamber 22 and the injector is clamped.
- the solenoid 38 moves the ferromagnetic valve plate 44 against the force of the compression spring in their release position, whereby the valve ball 50 is released becomes. Due to the pressure acting in the high pressure chamber 22, the valve ball 50 lifted off so that the flow channel 24 is no longer closed is and the fuel in the high-pressure chamber 22 through the flow channel 24 flows into the working space 42, from which it escapes into a leak fuel line via the opening 36 in the disk 34. Due to the falling pressure in the high pressure chamber 22, the from the force exerted on the piston 18 on the nozzle needle is so small that the nozzle needle due to the fuel under high pressure at the injection nozzle is raised and the piston 18 in the direction of the switching valve 10 moves. At the same time, the nozzle needle opens the injection nozzle, so that the fuel enters the cylinder of the engine.
- valve plate 44 As soon as the injection control deactivates the magnet coil 38, the Valve plate 44 by the force of the compression spring and the resilient elements 48 moved back to its closed position, in which the valve ball 50 presses against the conical sealing surface 26, which the flow channel 24th closes again.
- the movement of the valve plate 44 is characterized by the the gap between the valve plate 44 and the collar 28 of the valve body 20 fuel to be displaced damped the closing movement the valve plate 44 slows down, causing the valve plate to spring back 44 effectively prevented after impacting the valve ball 50 becomes.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
- Multiple-Way Valves (AREA)
- Sliding Valves (AREA)
Description
- Figur
- eine geschnittene Seitenansicht eines erfindungsgemäßen Schaltventils zum Betätigen eines Einspritzventils.
- 10
- Schaltventil
- 12
- Haltekörper
- 14
- Einspritzventil
- 16
- Durchgangsbohrung
- 18
- Kolben
- 20
- Ventilkörper
- 22
- Hochdruckraum
- 24
- Strömungskanal
- 26
- konische Dichtfläche
- 28
- Bund
- 30
- Durchgangsöffnung
- 32
- Ring
- 34
- Scheibe
- 36
- Öffnung
- 38
- Magnetspule
- 40
- Gehäuse
- 42
- Arbeitsraum
- 44
- Ventilplatte
- 46
- Ausnehmung
- 48
- federnde Elemente
- 50
- Ventilkugel
Claims (12)
- Schaltventil, insbesondere zum Betätigen eines Einspritzventils in einer Verbrennungskraftmaschine, mit einem Ventilkörper (20), der einen radial abstehenden Bund (28) besitzt und in dem ein Strömungskanal (24) ausgebildet ist, der mit einem Ende in einen Arbeitsraum (42) mündet, wobei der radial abstehende Bund (28) mit einer zur Mündung (26) des Strömungskanals (24) des Ventilkörpers (20) konzentrisch ausgerichteten Durchgangsöffnung (30) versehen ist, mit einer in dem Arbeitsraum (42) aufgenommenen Ventilplatte (44), die zwischen einer Schließstellung und einer Freigabestellung bewegbar ist, und mit einem zwischen der Ventilplatte (44) und der Mündung (26) des Strömungskanals (24) angeordneten Schließelement (50), das diese verschließt, wenn sich die Ventilplatte (44) in ihrer Schließstellung befindet, wobei
der Ventilkörper (20) derart gestaltet ist, dass die Ventilplatte (44) in ihrer Schließstellung an dem Schließelement (50) anliegt, das die Mündung (26) des Strömungskanals (24) verschließt, dadurch gekennzeichnet, dass zwischen der sich radial über die Durchgangsöffnung (30) hinaus erstreckenden Ventilplatte (44) in ihrer Schließstellung und dem Ventilkörper (20) ein Spalt bestehen bleibt, und dass das Schlieβelement (50) in der Schlieβstellung aus der Durchgangsöffnung (30) hervorsteht. - Schaltventil nach Anspruch 1,
dadurch gekennzeichnet, dass das Schließelement eine Ventilkugel (50) ist. - Schaltventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Ventilplatte (44) eine Ausnehmung (46) aufweist, die zu der Mündung (26) des Strömungskanales (50), auch wenn die Ventilplatte (44) in ihre Freigabestellung bewegt ist, in der Ausnehmung (46) und der Mündung (26) gehalten ist. - Schaltventil nach Anspruch 3,
dadurch gekennzeichnet, dass die Ausnehmung (46) und/oder die Mündung (26) des Strömungskanales (24) konisch erweitert ist bzw. sind. - Schaltventil nach Anspruch 3 oder 4,
dadurch gekennzeichnet, dass die Tiefe der Ausnehmung (46) größer ist als der Hub der Ventilplatte (44). - Schaltventil nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass an der dem Strömungskanal (24) zugewandten Innenfläche des Arbeitsraumes (42) federnde Elemente (48) vorgesehen sind, die an der Ventilplatte (44) befestigt sind und diese in Richtung des Strömungskanales (24) derart mechanisch vorspannen, dass eine Verlagerung der Ventilplatte (44) quer zu ihrer Bewegungsrichtung verhindert ist. - Schaltventil nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Ventilplatte 844) durch eine Druckfeder in ihrer Schließstellung gehalten ist und mit Hilfe eines Aktuators (38) in ihre Freigabestellung bewegbar ist. - Schaltventil nach Anspruch 7,
dadurch gekennzeichnet, dass als Aktuator ein elektrisch angesteuerter Magnet (38) dient und die Ventilplatte (44) zumindest teilweise aus einem ferromagnetischen Werkstoff gebildet ist. - Schaltventil nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch einen Ring (32), der sich mit seiner einen Stirnseite am Bund (28) abstützt und dessen anderer Stirnseite eine Scheibe (34) anliegt, die gemeinsam mit dem Bund (28) und dem Ring (32) dem Arbeitsraum (42) des Schaltventils (10) begrenzt. - Schaltventil nach Anspruch 8 oder 9,
dadurch gekennzeichnet, dass der Magnet (38) an der der Ventilplatte (44) abgewandten Fläche der Scheibe (34) angeordnet ist, deren Materialstärke den Luftspalt bestimmt, wenn die Ventilplatte (44) in ihre Freigabestellung bewegt ist. - Einspritzventil zur Kraftstoffeinspritzung in einer Verbrennungskraftmaschine, insbesondere in einem Dieselmotor, mit einem Haltekörper (12) und einem an diesem befestigten Düsenkörper einer Einspritzdüse mit einer Düsennadel zum Verschließen der Einspritzdüse, die in einer in dem Haltekörper (12) und dem Düsenkörper ausgebildeten, als Kraftstoffzuführung dienenden Nadelführung (16) bewegbar ist, und mit einem Schaltventil (10) nach einem der vorhergehenden Ansprüche, dessen Strömungskanal (24) mit der Nadelführung (16) in Verbindung steht.
- Einspritzventil nach Anspruch 11,
dadurch gekennzeichnet, dass der Ventilkörper (20) des Schaltventils (10) das eine Ende des im Haltekörper (12) ausgebildeten Abschnittes der Nadelführung (16) verschließt und mit der in den Halekörper (12) ragenden Stirnseite der Düsennadel einen Hochdruckraum (22) begrenzt, der mit dem Strömungskanal (24) in Verbindung steht.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19915686A DE19915686A1 (de) | 1999-04-07 | 1999-04-07 | Schaltventil |
| DE19915686 | 1999-04-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1043497A2 EP1043497A2 (de) | 2000-10-11 |
| EP1043497A3 EP1043497A3 (de) | 2003-04-16 |
| EP1043497B1 true EP1043497B1 (de) | 2004-12-01 |
Family
ID=7903784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00107266A Expired - Lifetime EP1043497B1 (de) | 1999-04-07 | 2000-04-03 | Schaltventil |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6360972B1 (de) |
| EP (1) | EP1043497B1 (de) |
| JP (1) | JP3667592B2 (de) |
| DE (2) | DE19915686A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10161002A1 (de) * | 2001-12-12 | 2003-07-03 | Bosch Gmbh Robert | Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine |
| US7051992B2 (en) * | 2003-08-25 | 2006-05-30 | Delphi Technologies, Inc. | Tubeless actuator with reduced secondary air gap |
| DE102004015661B4 (de) * | 2004-03-31 | 2007-08-23 | Bosch Rexroth Ag | Elektropneumatisches Ventil, insbesondere Vorsteuerventil für ein pneumatisches Wegeventil |
| WO2006042488A1 (de) * | 2004-10-21 | 2006-04-27 | Robert Bosch Gmbh | Kraftstoffinjektor |
| DE102006049050A1 (de) * | 2006-10-18 | 2008-04-30 | Robert Bosch Gmbh | Injektor zum Einspritzen von Kraftstoff |
| DE102007056913A1 (de) * | 2007-11-26 | 2009-05-28 | Robert Bosch Gmbh | Einspritzdüse für Kraftstoff mit Kugelventil |
| DE102015218054A1 (de) * | 2015-09-21 | 2017-03-23 | Robert Bosch Gmbh | Ventil, insbesondere Saugventil, in einer Hochdruckpumpe eines Kraftstoffeinspritzsystems |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2597186B1 (fr) * | 1986-04-14 | 1990-01-12 | Europ Propulsion | Soupape ou vanne fonctionnant sans frottement |
| IT1240173B (it) * | 1990-04-06 | 1993-11-27 | Weber Srl | Dispositivo di iniezione del carburante ad azionamento elettromagnetico per un motore a combustione interna |
| IT220660Z2 (it) * | 1990-10-31 | 1993-10-08 | Elasis Sistema Ricerca Fiat | Perfezionamenti al sistema di otturatore per alta pressione in una valvola pilota di un iniettore elettromagnetico per sistemi di iniezione del combustibile di motori a combustione interna |
| DE4235077A1 (de) * | 1992-10-17 | 1994-04-21 | Bosch Gmbh Robert | Ventil, insbesondere zum Einbau in ein Aggregat einer hydraulischen Fahrzeugbremsanlage |
| US5348233A (en) * | 1993-03-01 | 1994-09-20 | General Motors Corporation | High volume gaseous fuel injector |
| DE4428385B4 (de) * | 1994-08-11 | 2005-03-17 | Robert Bosch Gmbh | Ventilkörper |
| JP3524217B2 (ja) * | 1995-06-19 | 2004-05-10 | 本田技研工業株式会社 | 電磁弁 |
| IT1289795B1 (it) * | 1996-12-23 | 1998-10-16 | Elasis Sistema Ricerca Fiat | Perfezionamenti ad una valvola di dosaggio a comando elettromagnetico, con otturatore a sfera, per un iniettore di combustibile. |
| IT1296144B1 (it) * | 1997-11-18 | 1999-06-09 | Elasis Sistema Ricerca Fiat | Valvola di dosaggio registrabile per un iniettore di combustibile per motori a combustione interna. |
| DE19832826C2 (de) * | 1998-07-21 | 2000-08-17 | Bosch Gmbh Robert | Montageverfahren für Kraftstoff-Einspritzventil und Vorsteuerventil sowie Kraftstoff-Einspritzventil |
-
1999
- 1999-04-07 DE DE19915686A patent/DE19915686A1/de not_active Withdrawn
-
2000
- 2000-04-03 DE DE50008794T patent/DE50008794D1/de not_active Expired - Lifetime
- 2000-04-03 EP EP00107266A patent/EP1043497B1/de not_active Expired - Lifetime
- 2000-04-06 US US09/543,914 patent/US6360972B1/en not_active Expired - Lifetime
- 2000-04-07 JP JP2000106678A patent/JP3667592B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US6360972B1 (en) | 2002-03-26 |
| EP1043497A3 (de) | 2003-04-16 |
| DE19915686A1 (de) | 2000-10-12 |
| DE50008794D1 (de) | 2005-01-05 |
| JP3667592B2 (ja) | 2005-07-06 |
| EP1043497A2 (de) | 2000-10-11 |
| JP2000310170A (ja) | 2000-11-07 |
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