EP1199463A2 - Abgasrückführventil und Verfahren zum Öffnen eines Abgasrückführventils - Google Patents
Abgasrückführventil und Verfahren zum Öffnen eines Abgasrückführventils Download PDFInfo
- Publication number
- EP1199463A2 EP1199463A2 EP00122228A EP00122228A EP1199463A2 EP 1199463 A2 EP1199463 A2 EP 1199463A2 EP 00122228 A EP00122228 A EP 00122228A EP 00122228 A EP00122228 A EP 00122228A EP 1199463 A2 EP1199463 A2 EP 1199463A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- exhaust gas
- gas recirculation
- valve element
- recirculation valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
- F02M26/54—Rotary actuators, e.g. step motors
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/48—EGR valve position sensors
Definitions
- the invention relates to an exhaust gas recirculation valve according to the Preamble of claim 1 and a method for opening an exhaust gas recirculation valve.
- An exhaust gas recirculation valve according to the preamble of claim 1 is from DE 199 61 756 filed by the applicant known.
- This known exhaust gas recirculation valve has one Rotary drive on the valve element at least at the beginning the opening process takes place around its axis Rotary movement granted. This ensures that with greater reliability causes an opening of the valve can be, even if the valve element, for example a Valve plate, due to gluing on its seat liable.
- Those substances in the recirculated exhaust gas are included and the liability of the valve plate to the seat cause are namely by shear forces, as in Turning the valve plate with respect to the valve seat occur, easier to solve than by applying Normal forces, as is the case with ordinary activity by lifting the valve plate from the valve seat.
- this Valve both in terms of preventing Gluing, as well as in terms of opening the Valve, if sticking has occurred, is in need of improvement.
- the invention is therefore based on the object Exhaust gas recirculation valve and a method for opening an Exhaust gas recirculation valve to create the occurrence of Sticking can be prevented and / or the valve too in the event that the valve element sticks to its seat, can be opened reliably.
- the basic idea of the invention can be seen in that an impulse work in connection with the actuation of the Exhaust gas recirculation valve is provided, so to speak for a sudden opening of an adhesive valve element worries if this is through the ordinary Opening actuation does not detach from its seat.
- the purpose is preferably a Rotary drive element resilient at least indirectly with the Valve element connected. Should the valve element on his Adhere to the seat using a suitable mechanism causes a swing body against the rotary drive the force of the spring is twisted.
- the flywheel becomes a suitable time from the rotary drive disengaged brought and thus triggered, and this rotates as a result the effect of the spring force and strikes in a way on an element that is firmly connected to the valve element is so that this is caused by a sudden rotary movement of its glue is released.
- a swing body which with a driving element of the rotary drive in and out Intervention can be brought. Furthermore, the swing body is resilient and is at least indirectly connected to the valve element with this - after disengagement from that driving element - can be brought into engagement in such a way that the Valve element is given a (rotary) impact.
- This Construction leads to the following mode of operation.
- the Rotary drive always drives the via the driving element Swing body.
- the flywheel transmits the Rotary movement over the resilient connection, which is preferred is biased, at least indirectly on the valve element. If the valve element does not adhere to its seat, this twists and additionally, through the interaction between a contour element with a sloping flank and a start element, raised.
- valve element sticks to its seat, it succeeds the swinging body does not, so to speak, about the resilient Connection to turn the valve plate. Consequently, that remains Valve element firmly and the swing body rotates as a result of the rotary drive still in operation, so that the spring tensions.
- a suitable one Mechanism is the swing body, as mentioned, of that driving element disengageable. As a result of The swing body then turns back under spring force and then comes in with the valve element at least indirectly Intervention.
- the Swinging body to a stop of an element that is fixed is connected to the valve element.
- the valve element By striking the valve element becomes at least suddenly slightly, preferably against the opening movement, twisted so that it loosens and continues through the Rotary actuation can be opened. If solving for this The point in time has not yet occurred Pulse mechanism active again because the driving element of the Rotary drive in turn in engagement with the swing body comes, and the process described above is repeated until the valve element has come loose.
- the invention does not apply to an exhaust gas recirculation valve Rotary drive limited. Rather, any for example translatory drive, a push element be provided that the flywheel in the case of a Rotary drive corresponds and with the drive in and disengageable is that after disengagement an impact on the valve element at least indirectly transmits, so that this is opened suddenly.
- a triggerable when attempted Pawl mechanism proved to be particularly cheap For the driving connection that can be engaged and disengaged of a driving element of the rotary drive with the Swinging body has become a triggerable when attempted Pawl mechanism proved to be particularly cheap.
- one or more pawls can be inserted into the Preloaded engagement position at least slightly pivotable on the driving element of the rotary drive be provided so that they drive the swing body can.
- the resilient connection between the Flywheel and the valve element or one with the Valve element firmly connected intermediate element preferably biased.
- the Opening movement from the beginning a defined force on the Apply the valve element.
- the impulse described is active when the opening force is less than that Adhesive force of the valve element, so that the Swing body twisted with respect to the valve element, and itself the spring tensions.
- a flywheel For a compact design of the invention Exhaust gas recirculation valve, a flywheel is preferred, the has at least one recess in which one for the spring connection provided with the valve element spring and / or a closing spring can be accommodated.
- the swing body preferably as a rotationally symmetrical body be trained by appropriate training of his Cross-section of at least one of the two springs mentioned will usually be designed as spiral springs, receives.
- a freewheel device is provided, the is active in a valve closing direction.
- the closing it should be generally noted that the closing by means of a closing spring explained in more detail below and at Assistance is performed by the engine. It is however, a so-called failsafe function provided that the valve closes as soon as the electrical path fails.
- a freewheel device To the one mentioned Freewheel device must be explained that the Interaction between turning the valve and an element that is lifting when the valve is turned the same causes, is provided such that this Interaction always takes place when opening the valve.
- a freewheel is provided which can be designed so that it is only active at a time to which the valve is completely closed.
- both when opening and when Closing the valve is an element that is used to lift the Valve has a suitable contour, rotated. If this Element, however, after a complete closing process on one Stop is present, can with the help of the freewheel device further rotation of the valve in the closing direction be used, the valve in its closed state to twist on the seat. This causes the valve to lag the opening and the subsequent twisting process in a changed orientation on the valve seat so that to a certain extent, a grinding takes place, which leads to a improved sealing of the valve in the closed position contributes, i.e. Deposits, aging or Signs of wear on the sealing surfaces balanced or eliminated.
- the several stops can be provided on the element that has a leading edge and for the lifting movement of the Valve element ensures.
- the spring tongue element When opening the are multiple spring tongues engaged with multiple stops and ensure the twist to open. If the impulse has become active, the spring tongue element to a certain extent moved away from the respective stop of the spring tongue and after a rotation by one division with the nearest stop engages so that starting from this position the next opening movement can take place.
- Position sensor provided.
- Such a position sensor the stroke position of the valve plate is recorded exactly, and this is reported to a controller.
- Functional control and monitoring are carried out.
- an exhaust gas recirculation valve is opened by a Opening movement, preferably twisting, on the Valve element is applied.
- a Opening movement preferably twisting
- the method step is usually suitable for the Detach valve element from its gluing to the seat and a subsequent, usual opening movement enable. If necessary, the steps mentioned performed again and / or continuously until opening is done.
- the preferred embodiments of the The method according to the invention correspond to those Steps by the device described above performed on the exhaust gas recirculation valve according to the invention become.
- this push element can be excluded from the drive Be engaged and at least with the valve element be indirectly engaged in such a way that on this a blow or shock is transmitted.
- Fig. 1 is at the lower end of the invention Exhaust gas recirculation valve 10 to recognize a flange 12 with which the exhaust gas recirculation valve on an exhaust gas recirculation line is mountable.
- the line runs through the shown flange 12 and in the case shown after a Angled downwards by about 90 °.
- a valve seat for a valve is designed as a poppet valve in the case shown.
- the Valve plate is 70 in the illustration of FIG. 1 designated. Furthermore you can see that in the middle of Fig. 1 upper end of the valve lifter 14.
- Actuation of the valve generally takes place in such a way that a rotary drive, for example, an electric motor 16 via several gears a drive gear 18 acts, as below is described in more detail with the valve lifter 14 in such a way is connected that a rotation of the gear 18 also a Rotation of the valve lifter 14 causes.
- a contour element 20 via a subsequently in Individual explained freewheel device connected, which in the case shown one or more on its underside identically formed, suitable contour (s), which in the shown embodiment each rotatable stored wheel 22, which acts as a counter element, expires.
- a rotary operation of the valve together with the Contour element 20 thus not only causes a rotation of the Valve, so that the valve plate may differ from the Valve seat can loosen more easily, but by draining the contour on the wheel 22, also a simultaneous Lifting.
- Fig. 1 the fully raised one State of the valve, i.e. the state of opening is shown.
- the element 20 shown is used to close the valve turned back together with the valve plate.
- the Freewheel device described in detail below and a rotation of the gear 18 with respect to the Allows contour element 20 in the reverse direction is at turning back from a fully open one State not active.
- the reason for this is that in the open position, the compressed closing spring 26 a sufficient force on the elements of the Applies freewheel device that this does not "free run” but a torque from the gear 18 on the Contour element 20 transfers in the reverse direction.
- the exemplary embodiment shown acts over the closing spring 26 a largely hat-shaped element 28 on an intermediate element 30, which is firmly connected to the valve lifter 14.
- the Closing is generally by means of the closing spring and preferably carried out by supporting the motor.
- the pulse mechanism according to the invention is in the middle range Fig. 1 can be seen and becomes active when the to solve force of the valve element from its valve seat exceeds a predetermined force.
- the rotary drive is resilient connected to the valve lifter 14, so that the valve in Normally it opens when it's not on its valve seat liable.
- two pawls 32nd each by means of a pin 34 on the right pawl 2 can be seen rotatable about a vertical axis provided on the drive gear 18.
- the pawls 32 are each biased outwards.
- the left jack according to FIGS. 1 and 2 is on to recognize a recess 38 in the outer contour of the pawl 32, into the one at the bottom of a swing body 40 provided projection 42 engages.
- the rotary actuation means that the pawl 32 is rotated the swing body 40 however, the intermediate element 30 of this rotational movement does not follows so that the spring 46 is tensioned.
- the drive gear 18 rotates together with the pawls 32 thereon with respect to the Intermediate element 30, in the lower region of which one in FIG. 2 cam contour 52 to be recognized is formed. As in Fig. 2 is recognizable for the right jack, this indicates by its Inside at one rear end in the direction of rotation Projection 54 on.
- the pawls 32 come with the lower Projections 42 of the flywheel 40 engage again, after a front slope 58 of the respective pawl this projection 42 has passed, and the one described The process is repeated. In other words, it twists again the swing body 40 with respect to the intermediate element 30 until the trigger occurs and this against the stop 56th of the intermediate element 30 and the valve element solves.
- the drive can take place here in such a way that described pulse work with a selectable frequency effective so that the valve is released after a short time. This frequency is preferably of the order of magnitude some Hertz and can be tuned by a suitable masses and springs involved can be selected.
- Position feedback sensor 72 to recognize the under Interposition of a largely disc-shaped element 74 is attached to the closing spring 26. With the help of Position feedback sensor becomes the stroke position of the valve plate 70 exactly recorded. In other words, a signal is given that is proportional to the stroke position. This signal provides a basis for monitoring the valve position, for the position control of the valve plate 70 and a general Function control.
- FIG. 3 it can also be seen how the projection 42 of the Swing body 40, from which a front part is cut away is engaged with the shoulder 56 of the intermediate element 30 is.
- the situation shown in Fig. 2 also corresponds the beginning of the opening operation at which paragraph 44 of the Jack drives the projection 42 of the swing body 40, and the rotational movement of the flywheel via the spring 46 on the Intermediate element 30 is transmitted. If the intermediate element 30 does not follow this rotation because, as before executed, the valve element adheres to its valve seat, the swing body 40 rotates with respect to Intermediate element 30, so that the projection 42 of the Swing body 40 from shoulder 56 of intermediate element 30 disengaged.
- the spring tongue element in the case shown 60 which is fixedly connected to the intermediate element 30 is.
- the contour element 20 has an upper region a plurality of projections 62 between which inclined Flanks. If now in the ordinary Actuation of the valve, the intermediate element 30 to the right is rotated, there is a respective spring tongue 64 of the Spring tongue element 60 in such a way with a respective projection 62 engaged on the contour element 20 that the Contour element 20 is rotated, and by the expiration of the lower edge of the rising contour on the Wheel 22 (see FIG. 1) the valve is lifted.
- Fig. 4 it can also be seen that the swing body 40 a rotationally symmetrical, so to speak S-shaped Cross section, in the case shown two Recesses 66 and 68 are present. In the downward direction open recess 66 is in the case shown Coil spring 46 added. In the open to the top Recess 68 takes place in the embodiment shown the hat-shaped element 28 and the closing spring 26 place. This allows a particularly compact design of the Exhaust gas recirculation valve according to the invention can be achieved.
- valve lifter 14 is again shown in FIG. 4 including the attached valve plate 70 and that between the "position feedback sensor” (not shown) 72 and the closing spring 26 provided disk-shaped Element 74 shown.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Check Valves (AREA)
- Lift Valve (AREA)
- Feeding And Controlling Fuel (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Description
- Fig. 1
- eine perspektivische Explosionsdarstellung des erfindungsgemäßen Abgasrückführventils;
- Fig. 2
- eine Teilansicht der in Fig. 1 gezeigten Darstellung;
- Fig. 3
- eine perspektivische Darstellung, teilweise im Schnitt, eines Abschnitts des erfindungsgemäßen Abgasrückführventils; und
- Fig. 4
- eine perspektivische Darstellung, teilweise im Schnitt, eines Teils des erfindungsgemäßen Abgasrückführventils.
Claims (10)
- Abgasrückführventil (10) mit einem Drehantrieb (16), der ein Ventilelement zumindest während eines Teils der Öffnungsbewegung drehend antreibt,
dadurch gekennzeichnet, dass
ein Schwungkörper (40) vorgesehen ist, der mit einem treibenden Element (18) des Drehantriebs (16) in und außer Eingriff bringbar ist, mit dem Ventilelement zumindest mittelbar federnd verbunden ist und nach dem Außer-Eingriff-Bringen von dem treibenden Element (18) mit dem Ventilelement zumindest mittelbar derart in Eingriff bringbar ist, dass ein Stoß übertragen wird. - Abgasrückführventil nach Anspruch 1,
dadurch gekennzeichnet, dass
ein auslösbarer Klinkenmechanismus (32, 36) vorgesehen ist, der treibend mit dem Schwungkörper (40) verbunden ist. - Abgasrückführventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
ein Zwischenelement (30), das fest mit dem Ventilelement verbunden ist, eine Nockenkontur (52) aufweist, die bei Verdrehung des treibenden Elements (18) bezüglich des Zwischenelements (30) ein Außer-Eingriff-Bringen des Schwungkörpers (40) bewirkt. - Abgasrückführventil nach zumindest einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
die federnde Verbindung (46) zwischen dem Schwungkörper (40) und dem Ventilelement vorgespannt ist. - Abgasrückführventil nach zumindest einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
der Schwungkörper (40) zumindest eine Ausnehmung (66, 68) aufweist, in der die federnde Verbindung (46) zwischen Schwungkörper (40) und dem Ventilelement und/oder eine Schließfeder (26) aufnehmbar ist. - Abgasrückführventil mit einem Drehantrieb (16), der ein Ventilelement zumindest während eines Teils der Öffnungsbewegung drehend antreibt, insbesondere nach zumindest einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
dieses eine Freilaufeinrichtung (60, 62) aufweist, die in einer Ventil-Schließrichtung aktiv ist. - Abgasrückführventil nach Anspruch 6,
dadurch gekennzeichnet, dass
die Freilaufeinrichtung ein Federzungenelement (60) aufweist, das in einer Öffnungsrichtung mit Anschlägen (62) eines weiteren Elements (20) zusammenwirkt. - Abgasrückführventil nach zumindest einem der vorangehenden Ansprüche dadurch gekennzeichnet, dass dieses einen Lagesensor aufweist.
- Verfahren zum Öffnen eines Abgasrückführventils mit folgenden Schritten:a) Aufbringen einer Öffnungsbewegung, vorzugsweise Verdrehen, eines Ventilelements,b) Ausführen eines zumindest mittelbaren Schlages oder Stoßes auf das Ventilelement in dem Fall, dass das Ventilelement an seinem Sitz haftet,c) gegebenenfalls Wiederholen bzw. Fortsetzen der Schritte a)und b).
- Verfahren zum Schließen eines Abgasrückführventils mit einem Ventilelement, das durch eine Hubbewegung geschlossen wird,
dadurch gekennzeichnet, dass
das Ventilelement im geschlossenen Zustand an dem zugeordneten Ventilsitz verdreht wird.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK00122228T DK1199463T3 (da) | 2000-10-17 | 2000-10-17 | Tilbageföringsventil for udstödningsgas og fremgangsmåde til åbning af en sådan ventil |
DE50005435T DE50005435D1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Öffnen eines Abgasrückführventils |
AT00122228T ATE260410T1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und verfahren zum öffnen eines abgasrückführventils |
PT00122228T PT1199463E (pt) | 2000-10-17 | 2000-10-17 | Valvula de recirculacao de gases de escape e processo para abrir uma valvula de recirculacao de gases de escape |
EP03021198A EP1375892A1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Schliessen eines Abgasrückführventils |
ES00122228T ES2215538T3 (es) | 2000-10-17 | 2000-10-17 | Valvula de realimentacion de gases de escape y procedimiento para abrir una valvula de realimentacion de gases de escape. |
EP00122228A EP1199463B1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Öffnen eines Abgasrückführventils |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00122228A EP1199463B1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Öffnen eines Abgasrückführventils |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03021198A Division EP1375892A1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Schliessen eines Abgasrückführventils |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1199463A2 true EP1199463A2 (de) | 2002-04-24 |
EP1199463A3 EP1199463A3 (de) | 2002-10-16 |
EP1199463B1 EP1199463B1 (de) | 2004-02-25 |
Family
ID=8170074
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03021198A Withdrawn EP1375892A1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Schliessen eines Abgasrückführventils |
EP00122228A Expired - Lifetime EP1199463B1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Öffnen eines Abgasrückführventils |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03021198A Withdrawn EP1375892A1 (de) | 2000-10-17 | 2000-10-17 | Abgasrückführventil und Verfahren zum Schliessen eines Abgasrückführventils |
Country Status (6)
Country | Link |
---|---|
EP (2) | EP1375892A1 (de) |
AT (1) | ATE260410T1 (de) |
DE (1) | DE50005435D1 (de) |
DK (1) | DK1199463T3 (de) |
ES (1) | ES2215538T3 (de) |
PT (1) | PT1199463E (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1462643A1 (de) | 2003-03-25 | 2004-09-29 | Cooper-Standard Automotive (Deutschland) GmbH | Ventil-Öffnungsmechanismus |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012530209A (ja) | 2009-06-17 | 2012-11-29 | ヴァレオ システム ドゥ コントロール モトゥール | 運動変換装置を備えるバルブ |
CN101696667A (zh) * | 2009-10-29 | 2010-04-21 | 奇瑞汽车股份有限公司 | 一种发动机egr阀 |
CN112065615B (zh) * | 2020-09-18 | 2021-12-03 | 浙江银轮机械股份有限公司 | Egr阀 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4646705A (en) * | 1985-08-29 | 1987-03-03 | Robert Bosch Gmbh | Exhaust gas return control system for an internal combustion engine |
FR2724976A1 (fr) * | 1994-09-27 | 1996-03-29 | Sagem Allumage | Unite de controle de la quantite de gaz d'echappement recyclee dans un systeme de recirculation des gaz d'echappement d'un moteur a combustion interne |
US5626165A (en) * | 1994-10-17 | 1997-05-06 | Hadsys, Inc. | Valve for re-circulating exhaust gas |
EP0930428A2 (de) * | 1998-01-16 | 1999-07-21 | Pierburg Aktiengesellschaft | Abgasrückführventil |
EP1028249A2 (de) * | 1999-02-12 | 2000-08-16 | Eaton Corporation | Abgasrückführungssystem und Betätigungsvorrichtung dafür |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1454423A (en) * | 1921-03-07 | 1923-05-08 | Continental Engineering Corp | Rotary valve for internal-combustion engines |
US4346728A (en) * | 1980-07-28 | 1982-08-31 | Anchor/Darling Industries, Inc. | Automated dual mode valve actuator |
US5606957A (en) * | 1995-12-06 | 1997-03-04 | Caterpillar Inc. | Control system for exhaust gas recirculation |
-
2000
- 2000-10-17 EP EP03021198A patent/EP1375892A1/de not_active Withdrawn
- 2000-10-17 DE DE50005435T patent/DE50005435D1/de not_active Expired - Fee Related
- 2000-10-17 EP EP00122228A patent/EP1199463B1/de not_active Expired - Lifetime
- 2000-10-17 ES ES00122228T patent/ES2215538T3/es not_active Expired - Lifetime
- 2000-10-17 AT AT00122228T patent/ATE260410T1/de not_active IP Right Cessation
- 2000-10-17 PT PT00122228T patent/PT1199463E/pt unknown
- 2000-10-17 DK DK00122228T patent/DK1199463T3/da active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4646705A (en) * | 1985-08-29 | 1987-03-03 | Robert Bosch Gmbh | Exhaust gas return control system for an internal combustion engine |
FR2724976A1 (fr) * | 1994-09-27 | 1996-03-29 | Sagem Allumage | Unite de controle de la quantite de gaz d'echappement recyclee dans un systeme de recirculation des gaz d'echappement d'un moteur a combustion interne |
US5626165A (en) * | 1994-10-17 | 1997-05-06 | Hadsys, Inc. | Valve for re-circulating exhaust gas |
EP0930428A2 (de) * | 1998-01-16 | 1999-07-21 | Pierburg Aktiengesellschaft | Abgasrückführventil |
EP1028249A2 (de) * | 1999-02-12 | 2000-08-16 | Eaton Corporation | Abgasrückführungssystem und Betätigungsvorrichtung dafür |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1462643A1 (de) | 2003-03-25 | 2004-09-29 | Cooper-Standard Automotive (Deutschland) GmbH | Ventil-Öffnungsmechanismus |
Also Published As
Publication number | Publication date |
---|---|
EP1199463B1 (de) | 2004-02-25 |
PT1199463E (pt) | 2004-06-30 |
ATE260410T1 (de) | 2004-03-15 |
EP1375892A1 (de) | 2004-01-02 |
DE50005435D1 (de) | 2004-04-01 |
EP1199463A3 (de) | 2002-10-16 |
DK1199463T3 (da) | 2004-06-28 |
ES2215538T3 (es) | 2004-10-16 |
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