EP1044319B1 - Verbrennungskraftmaschine - Google Patents
Verbrennungskraftmaschine Download PDFInfo
- Publication number
- EP1044319B1 EP1044319B1 EP99952363A EP99952363A EP1044319B1 EP 1044319 B1 EP1044319 B1 EP 1044319B1 EP 99952363 A EP99952363 A EP 99952363A EP 99952363 A EP99952363 A EP 99952363A EP 1044319 B1 EP1044319 B1 EP 1044319B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- valve
- guide
- internal combustion
- combustion engine
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/16—Pneumatic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L2013/0089—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque with means for delaying valve closing
- F01L2013/0094—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque with means for delaying valve closing with switchable clamp for keeping valve open
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/031—Electromagnets
Definitions
- the present invention relates to an internal combustion engine with at least one combustion chamber that has at least two each guided in a valve guide and hydraulically or has pneumatically actuated valves, namely a Intake valve for the admission of fuel or one Air-fuel mixture in the combustion chamber before Combustion process and an exhaust valve to exhaust the Combustion gases from the combustion chamber after Combustion process.
- the present invention also relates to a Valve arrangement comprising a valve guide and a hydraulic or pneumatic. actuatable and in the Valve guide guided valve.
- Such internal combustion engines with hydraulic or pneumatically operated valves are from the state of the Technology known. You have compared to internal combustion engines with camshaft operated valves the advantage that the Valves can be controlled independently of each other can. Due to the variable valve control, the Noise reduction and the consumption and that Exhaust behavior of internal combustion engines significantly improved become.
- An internal combustion engine is known from DE 37 39 775 A1 hydraulically or pneumatically operated valves of the known type.
- the valves are each assigned an electrically actuated fastening element, through which the valve is relative to the valve guide can be set.
- Such an internal combustion engine with hydraulically or pneumatically operated valves can also be found in DE 42 09 590 Cl.
- valves of the known from the two publications Internal combustion engines can only be in predetermined Positions, namely in the open and the closed Valve position.
- the present invention is therefore the object based on creating a way that valves from Internal combustion engines in any position relative to the Valve guides can be set.
- the invention is based on of the internal combustion engine of the type mentioned at the beginning, that the valves are each electrically actuatable clamping element relative to the valve guide can be determined.
- the valves can be in any valve position relative to the valve guide.
- the Response times of these electrically operated clamping elements are very short. With their help, the response times of the hydraulically or pneumatically controlled valves can be significantly shortened by simultaneously with the Hydraulic or pneumatic arrangement also faster responsive electrically operated clamping elements can be controlled.
- the activation of the clamping elements for example. during the opening of a valve causes a brief Block hydraulic or pneumatic Valve actuation assembly.
- the quickly responsive Clamping elements that hold the valve relative to the valve guide set then act against the hydraulic or Pneumatic arrangement that tries as long as that Continue opening the valve until it opens the control signal to end the opening movement responds.
- the blocking has no consequences on the hydraulic or pneumatic valve actuation arrangement, because the valve actuation means (a liquid or a Gas) are compressible and thus have a resilient effect.
- a clamping element can relative to the valve Clamp the valve guide using a friction lock. Thereby there is no abrupt or sudden termination a valve opening movement after reaching one desired valve opening position. Rather, it will Valve during the opening movement relative to the Valve guide braked. A valve can also pass through the use of the clamping element in any Opening position can be determined.
- the valve stem have a stroke stop has, when opening the valve on the clamping element hits, and that the clamping element in a relaxed state by the stroke stop in a clamping element guide relative to the valve guide against the force of a spring element is axially displaceable.
- the clamping element provides one variable stroke stop, through which the valve stroke variable can be adjusted.
- the clamping element can in relaxed state shifted within the valve guide become. Moving the clamping element in the direction smaller valve lifts are carried out by means of a spring element, that acts between the valve guide and the clamping element. Moving the clamping element in the direction of larger strokes the valve stem takes place during the Opening movement of the valve. Is the one you want When the valve position is reached, the clamping element is activated and the valve in its current position relative to that Valve guide fixed.
- the valve stem has a stroke stop that at Opening the valve meets the clamping element, and that the clamping element in the relaxed state in the Clamping element guide relative to the valve guide the force of a spring element hydraulically or pneumatically is axially displaceable.
- the clamping element enables a variable stroke setting.
- the clamping element can be in a relaxed state within the Valve guide to be moved. Moving the Clamping element in the direction of smaller valve strokes by means of a spring element which is between the valve guide and the clamping element acts. Moving the Clamping element in the direction of larger strokes is carried out by means of a hydraulic or pneumatic adjustment arrangement.
- the clamping element regardless of a valve opening movement in a any valve stroke limitation position can be brought. is the desired valve lift position is reached Clamping element activated and relative to the valve guide established. The valve can now only be opened so far until the stroke stop hits the clamping element.
- the clamping elements Preferably in internal combustion engines with at least two inlet valves and / or at least two Exhaust valves per combustion chamber, the clamping elements from in each case at least two of the inlet valves and / or the Exhaust valves with one another via a bridge element connected.
- the clamping element advantageously has at least one piezoelectric actuator for actuating the clamping element on. Piezoelectric actuators have the advantage that they have particularly short response times and within about 20 ms after a corresponding control signal Clamping the clamping element relative to the valve guide cause. That means the response times of the valves the internal combustion engine according to the invention approximately by the factor Can be shortened by 10 - 20.
- the clamping element is designed as a clamping ring, the has a circumferential gap in which the at least a piezoelectric actuator is arranged such that an excitation of the piezoelectric actuator to one Enlargement of the circumference of the clamping ring and to one Setting the clamping ring in the clamping element guide leads.
- the clamping ring In the relaxed state of the piezoelectric actuators the clamping ring has an outer diameter that is smaller than is the inside diameter of the valve guide; the clamping ring is axially displaceable within the valve guide.
- Clamping element is designed as a clamping ring circumferentially has a gap in which two to each other spaced jaws are arranged such that a Increase the distance between the jaws to one Enlargement of the circumference of the clamping ring and to one Setting the clamping ring in the clamping element guide leads, being in the distance between the jaws of the at least one piezoelectric actuator arranged in this way is that excitation of the piezoelectric actuator too an increase in the distance between the jaws leads.
- the clamping ring In the relaxed state of the piezoelectric actuators the clamping ring has an outer diameter that is smaller than the inside diameter of the valve guide; the The clamping ring is axial within the valve guide displaceable.
- the jaws can on the clamping ring in the gap be attached.
- the Jaws and the piezoelectric actuators within the Clamping element guide in the axial direction together with the Clamping ring.
- Clamping element is designed as a clamping ring on the at least one relative to the clamping element guide in axially fixed jaw acts, each by means of the at least one piezoelectric actuator is so radially inward that it can be moved from acts on the outside of the clamping ring.
- the clamping ring has one Outside diameter that is smaller than the inside diameter the valve guide.
- the clamping ring is in a relaxed state of the piezoelectric actuators within the Clamping element guide axially displaceable. When excited of the piezoelectric actuators, the jaws become radial shifted inward until the inner surfaces of the jaws rest on the outer surface of the clamping ring. Through the continues to be effective force of the piezoelectric actuators the clamping ring through the clamping jaws by means of friction an axial movement within the clamping element guide prevented.
- the clamping ring is in the clamping element guide set relative to the valve guide. From static For reasons it makes sense that the clamping ring at this Embodiment does not have a circumferential gap.
- the clamping ring is in the relaxed state of the piezoelectric actuators inside the clamping element guide is not axially displaceable because it has an outer diameter that is larger than that Inner diameter of the clamping element guide.
- the outside surface the clamping ring lies on the inner surface of the Clamping element guide and the clamping ring is by means of Friction on the clamping element guide fixed.
- Jaws moved radially inwards until the Inner surfaces of the jaws on the outer surface of the Place the clamping ring on. Through the continued force the jaws of the piezoelectric actuators act in this way on the clamping ring so that its outer circumference is reduced.
- the clamping ring expediently has a circumferential one Gap, the width of which is due to the force of the jaws is reduced.
- the clamping ring now has an outer diameter, which is smaller than the inside diameter of the Clamping element guide, and is within the Clamping element guide axially displaceable.
- the valve is advantageously used as an inlet valve Intake of fuel or a fuel-air mixture into a combustion chamber of an internal combustion engine or as Exhaust valve for exhausting combustion gases from the Combustion chamber trained. Especially when used as Intake or exhaust valve of an internal combustion engine come the particular advantages of the valves according to the invention for Wear.
- FIG. 1a shows an internal combustion engine 1 according to the invention shown in the detail.
- the Internal combustion engine 1 is designed as a valve guide 3, in which a valve 4 is guided.
- the valve 4 closes or opens access to a combustion chamber 5 of the Internal combustion engine 1.
- A is used to close the access Valve plate 6 of valve 4 by means of a valve spring 7 pressed against a valve seat 8, which is at the access to the Combustion chamber 5 is formed.
- the valve 4 will by means of a hydraulic or pneumatic Valve actuation arrangement 21 actuated.
- a valve stem 9 of the valve 4 is in the valve guide 3 axially displaceable.
- the valve stem 9 has one Stroke stop 10 on.
- the valve 4 is as an intake valve for the admission of fuel or a fuel-air mixture in the combustion chamber 5 before Combustion process trained.
- the valve 4 could, however also as an exhaust valve to exhaust the Combustion gases from the combustion chamber 5 after Combustion process can be formed without a Change in the structure of the valve 4 would result.
- a Clamping element within a clamping element guide 20 is a Clamping element, in particular as a clamping ring 11 Fastener arranged.
- the clamping ring 11 has circumferentially a gap 12 in which a piezoelectric actuator 13 is arranged such that a Excitation of the piezoelectric actuator 13 to one Enlargement of the width of the gap 12 and thus to one Increasing the circumference of the clamping ring 11 leads.
- the clamping ring 11 is in the relaxed piezoelectric Actuator 13 axially within the clamping element guide 20 displaceable.
- the stroke stop 10 of the valve stem 9 hits with a valve opening movement on the clamping ring 11.
- the clamping ring 11 can be relaxed State of the piezoelectric actuator 13 in the direction of a larger valve strokes against the force of a spring element 14 by means of a hydraulic adjustment arrangement 15 axially displaced within the clamping element guide 20 become.
- By controlling the hydraulic adjustment arrangement 15 can the desired valve stroke end position by means of Clamping rings 11 can be set. In the desired one The valve stroke end position then becomes the piezoelectric actuator 13 activated and the clamping ring 11 in the Clamping element guide 20 relative to valve guide 3 established.
- clamping ring 11 from Figure 1a is a plan view shown in section along the line A-A.
- the fastener is according to a second Embodiment shown.
- the fastener according to the second embodiment also has a clamping ring 11 with a circumferentially arranged gap 12.
- a desired valve stroke end position is the Clamping ring 11 by means of the hydraulic adjustment arrangement 15 or by means of the spring element 14 relative to the Jaws 16 axially within the valve guide 3 postponed. After reaching the desired one The piezoelectric actuators become the valve stroke end position 13 activated and the clamping ring 11 is in the Clamping element guide 20 relative to valve guide 3 established.
- FIG 2b the fastener of Figure 2a is in Side view shown.
- Figure 2c shows that Fastening element from Figures 2a and 2b in plan view on average along the line B-B.
- FIG 3a is a fastener according to a third Embodiment shown.
- the fastener has also one in a relaxed state within the Clamping element guide 20 axially slidably mounted Clamping ring 11 on.
- a jaw 18 formed by a piezoelectric actuator 13 such radially inwards can be moved from the outside onto the clamping ring 11 acts and against him within the clamping element guide 20 axial displacement secures.
- This one too Embodiment is the setting of a desired one Valve stroke end position by axially shifting the Clamping ring 11 by means of the hydraulic adjustment arrangement. 15 against the force of the spring element 14.
- FIG. 3b shows the fastening element according to FIG. 3a in Top view shown in section along the line C-C.
- FIGS. 4a and 4b 19 Such a bridge element is shown in FIGS. 4a and 4b 19 shown by which the clamping elements 11 two Valves 4 are interconnected.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
- Figur 1a
- eine erfindungsgemäße Brennkraftmaschine im Ausschnitt mit einem Befestigungselement gemäß einer ersten Ausführungsform in Frontansicht, teilweise im Schnitt;
- Figur 1b
- das Befestigungselement aus Figur 1a in Draufsicht, im Schnitt entlang der Linie A-A;
- Figur 2a
- ein Befestigungselement gemäß einer zweiten Ausführungsform in Frontansicht;
- Figur 2b
- das Befestigungselement aus Figur 2a in Seitenansicht, teilweise im Schnitt;
- Figur 2c
- das Befestigungselement aus den Figuren 2a, 2b in Draufsicht im Schnitt entlang der Linie B-B;
- Figur 3a
- ein Befestigungselement gemäß einer dritten Ausführungsform in Frontsicht, teilweise im Schnitt;
- Figur 3b
- das Befestigungselement aus Figur 3a in Draufsicht, im Schnitt entlang der Linie C-C;
- Figur 4a
- ein Brückenelement zum Verbinden der Klemmelement zweier Ventile in Frontansicht; und
- Figur 4b
- das Brückenelement aus Figur 4a in Seitenansicht.
Claims (11)
- Brennkraftmaschine mit mindestens einem Verbrennungsraum (5), der mindestens zwei jeweils in einer Ventilführung (3) geführte und hydraulisch oder pneumatisch betätigbare Ventile (4) aufweist, nämlich ein Einlassventil zum Einlass von Kraftstoff oder eines Kraftstoff-Luft-Gemisches in den Verbrennungsraum (5) vor dem Verbrennungsvorgang und ein Auslassventil zum Auslass der Verbrennungsabgase aus dem Verbrennungsraum (5) nach dem Verbrennungsvorgang, dadurch gekenzeichnet, dass die Ventile (4) jeweils mittels eines elektrisch betätigbaren Klemmelements relativ zu der Ventilführung (3) festlegbar sind.
- Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Ventilschaft (9) einen Hubanschlag (10) aufweist, der beim Öffnen des Ventils (4) auf das Klemmelement trifft, und dass das Klemmelement in entspanntem Zustand durch den Hubanschlag (10) in einer Klemmelementführung (20) relativ zu der Ventilführung (3) entgegen der Kraft eines Federelements (14) axial verschiebbar ist.
- Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der Ventilschaft (9) einen Hubanschlag (10) aufweist, der beim Öffnen des Ventils (4) auf das Klemmelement trifft, und dass das Klemmelement in entspanntem Zustand in der Klemmelementführung (20) relativ zu der Ventilführung (3) entgegen der Kraft eines Federelements (14) hydraulisch oder pneumatisch axial verschiebbar ist.
- Brennkraftmaschine nach Anspruch 2 oder 3 mit mindestens zwei Einlassventilen und/oder mindestens zwei Auslassventilen je Verbrennungsraum (5), dadurch gekennzeichnet, dass die Klemmelemente von jeweils mindestens zwei der Einlassventile und/oder der Auslassventile über ein Brückenelement (19) miteinander verbunden sind.
- Brennkraftmaschine nach einem der Ansprüche 1. bis 4, dadurch gekennzeichnet, dass das Klemmelement mindestens einen piezoelektrischen Aktor (13) zur Betätigung des Klemmelements aufweist.
- Brennkraftmaschine nach Anspruch 5, dadurch gekennzeichnet, dass das Klemmelement als ein Klemmring (11) ausgebildet ist, der umfangsseitig einen Spalt (12) aufweist, in dem der mindestens eine piezoelektrische Aktor (13) derart angeordnet ist, dass eine Anregung des piezoelektrischen Aktors (13) zu einer Vergrößerung des Umfangs des Klemmrings (11) und zu einem Festlegen des Klemmrings (11) in der Klemmelementführung (20) führt.
- Brennkraftmaschine nach Anspruch 5, dadurch gekennzeichnet, dass das Klemmelement als ein Klemmring (11) ausgebildet ist, der umfangsseitig einen Spalt (12) aufweist, in dem zwei zueinander beabstandete Klemmbacken (16) derart angeordnet sind, dass eine Vergrößerung des Abstands (17) zwischen den Klemmbacken (16) zu einer Vergrößerung des Umfangs des Klemmrings (11) und zu einem Festlegen des Klemmrings (11) in der Klemmelementführung (20) führt, wobei in dem Abstand (17) zwischen den Klemmbacken (16) der mindestens eine piezoelektrische Aktor (13) derart angeordnet ist, dass eine Anregung des piezoelektrischen Aktors (13) zu einer Vergrößerung des Abstands (17) zwischen den Klemmbacken (16) führt.
- Brennkraftmaschine nach Anspruch 7, dadurch gekennzeichnet, dass die Klemmbacken (16) relativ zu der Klemmelementführung (20) in axialer Richtung festgelegt sind.
- Brennkraftmaschine nach Anspruch 5, dadurch gekennzeichnet, dass das Klemmelement als ein Klemmring (11) ausgebildet ist, auf den mindestens eine relativ zu der Klemmelementführung (20) in axialer Richtung festgelegte Klemmbacke (18) wirkt, die mittels des mindestens einen piezoelektrischen Aktors (13) derart radial nach innen verschiebbar sind, dass sie von außen auf den Klemmring (11) wirken.
- Ventilanordnung umfassend eine Ventilführung (3) und ein hydraulisch oder pneumatisch betätigbares und in der Ventilführung (3) geführtes Ventil (4), dadurch gekennzeichnet, dass das Ventil (4) mittels eines elektrisch betätigbaren Klemmelements relativ zu der Ventilführung (3) festlegbar ist.
- Ventilanordnung nach Anspruch 10, dadurch gekennzeichnet, dass das Ventil (4) als ein Einlassventil zum Einlass von Kraftstoff oder eines Kraftstoff-Luft-Gemisches in einen Verbrennungsraum (5) einer Brennkraftmaschine oder als Auslassventil zum Auslass von Verbrennungsabgasen aus dem Verbrennungsraum (5) ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19836902 | 1998-08-14 | ||
DE19836902A DE19836902A1 (de) | 1998-08-14 | 1998-08-14 | Verbrennungskraftmaschine |
PCT/DE1999/002510 WO2000009866A1 (de) | 1998-08-14 | 1999-08-11 | Verbrennungskraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1044319A1 EP1044319A1 (de) | 2000-10-18 |
EP1044319B1 true EP1044319B1 (de) | 2004-11-03 |
Family
ID=7877546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99952363A Expired - Lifetime EP1044319B1 (de) | 1998-08-14 | 1999-08-11 | Verbrennungskraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6340009B1 (de) |
EP (1) | EP1044319B1 (de) |
JP (1) | JP2002522702A (de) |
DE (2) | DE19836902A1 (de) |
WO (1) | WO2000009866A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10220928B4 (de) * | 2002-05-10 | 2009-11-05 | Delphi Technologies, Inc., Troy | Verfahren und Einrichtung zur steuerbaren Begrenzung des Hubs eines hydraulisch betätigten Zylinderventils |
US7341028B2 (en) * | 2004-03-15 | 2008-03-11 | Sturman Industries, Inc. | Hydraulic valve actuation systems and methods to provide multiple lifts for one or more engine air valves |
US7387095B2 (en) * | 2004-04-08 | 2008-06-17 | Sturman Industries, Inc. | Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves |
US7311068B2 (en) * | 2006-04-17 | 2007-12-25 | Jason Stewart Jackson | Poppet valve and engine using same |
DE102006018587A1 (de) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Ventilbetätigungsvorrichtung, insbesondere für Gaswechselventile von Hubkolbenbrennkraftmaschinen |
US8992193B2 (en) * | 2011-07-15 | 2015-03-31 | Hamilton Sundstrand Corporation | Shaft assembly including a contained shaft spring load |
US11725548B2 (en) * | 2021-06-23 | 2023-08-15 | L&T Technology Services Limited | Camless engine |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3039967A1 (de) * | 1980-10-23 | 1982-06-03 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage |
DE3135650A1 (de) * | 1981-09-09 | 1983-03-17 | Robert Bosch Gmbh, 7000 Stuttgart | "ventilsteuerung fuer hubkolben-brennkraftmaschinen mit mechanisch-hydraulischen bewegungsuebertragungsmitteln" |
JPS61160565A (ja) * | 1985-01-04 | 1986-07-21 | Seiko Epson Corp | 燃料噴射装置 |
DE3739775A1 (de) * | 1986-12-06 | 1988-06-16 | Volkswagen Ag | Einrichtung zur ventilbetaetigung |
US5002022A (en) * | 1989-08-30 | 1991-03-26 | Cummins Engine Company, Inc. | Valve control system with a variable timing hydraulic link |
US5114116A (en) * | 1989-12-07 | 1992-05-19 | Feinmechanische Werke Mainz Gmbh | Electromagnetically actuated quick-action switching valve |
AT397134B (de) * | 1991-02-19 | 1994-02-25 | Hoerbiger Ventilwerke Ag | Ventil |
DE4209590C1 (en) * | 1992-03-25 | 1993-05-13 | Mtu Friederichshafen Gmbh | Piston-type valve actuator - is used on ic engine poppet valve and has small inlet and release valves for high-pressure compressible fluid |
DE19531652A1 (de) * | 1995-08-29 | 1997-05-07 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
DE19739539A1 (de) * | 1997-09-09 | 1999-03-11 | Ruediger Ufermann | Steuervorrichtung für Ein- und Auslaßventile von Brennkraftmaschinen |
-
1998
- 1998-08-14 DE DE19836902A patent/DE19836902A1/de not_active Ceased
-
1999
- 1999-08-11 WO PCT/DE1999/002510 patent/WO2000009866A1/de active IP Right Grant
- 1999-08-11 EP EP99952363A patent/EP1044319B1/de not_active Expired - Lifetime
- 1999-08-11 JP JP2000565281A patent/JP2002522702A/ja active Pending
- 1999-08-11 US US09/529,512 patent/US6340009B1/en not_active Expired - Fee Related
- 1999-08-11 DE DE59910990T patent/DE59910990D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59910990D1 (de) | 2004-12-09 |
JP2002522702A (ja) | 2002-07-23 |
EP1044319A1 (de) | 2000-10-18 |
DE19836902A1 (de) | 2000-02-17 |
US6340009B1 (en) | 2002-01-22 |
WO2000009866A1 (de) | 2000-02-24 |
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