EP1111227B1 - Soupape de re-circulation de gaz d'échappement - Google Patents

Soupape de re-circulation de gaz d'échappement Download PDF

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Publication number
EP1111227B1
EP1111227B1 EP00127215A EP00127215A EP1111227B1 EP 1111227 B1 EP1111227 B1 EP 1111227B1 EP 00127215 A EP00127215 A EP 00127215A EP 00127215 A EP00127215 A EP 00127215A EP 1111227 B1 EP1111227 B1 EP 1111227B1
Authority
EP
European Patent Office
Prior art keywords
valve
waste gas
gas return
exhaust gas
actuating mechanism
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
Application number
EP00127215A
Other languages
German (de)
English (en)
Other versions
EP1111227A2 (fr
EP1111227A3 (fr
Inventor
Christoph Thiery
Bernhard Klipfel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cooper Standard Automotive Deutschland GmbH
Original Assignee
Siebe Automotive Deutschland GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siebe Automotive Deutschland GmbH filed Critical Siebe Automotive Deutschland GmbH
Publication of EP1111227A2 publication Critical patent/EP1111227A2/fr
Publication of EP1111227A3 publication Critical patent/EP1111227A3/fr
Application granted granted Critical
Publication of EP1111227B1 publication Critical patent/EP1111227B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
    • 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

Definitions

  • the invention has for its object to provide an exhaust gas recirculation valve, in which a reliable opening of the valve can be ensured even with contaminated state of the contact surface between the valve seat and valve disc with a compact operating mechanism.
  • the exhaust gas recirculation valve has an actuating mechanism which gives the valve element, which cooperates with the valve seat, that is usually the valve disk, at least at the beginning of the opening process a rotational movement about its axis.
  • the valve disk is at least slightly rotated about the axis of the associated valve stem at the beginning of the opening process. This movement is therefore extremely effective for a reliable opening with little force, because the adhering contaminants between the valve element and the valve seat resist forces applied as shearing forces less than normal forces.
  • valve element in the usual way from the valve seat with which it Due to contamination is deducted due to linear displacement than the force required to rotate the valve member on the valve seat to release the adhesive through the adhesive bond around the axis of the valve lifter.
  • the adhesive dissolving rotational movement can be carried out at the beginning of the opening process alone, and the translational movement for the actual opening of the valve can be applied subsequently.
  • the rotational movement according to the invention which takes place at least at the beginning of the opening process, leads to a self-cleaning effect of the contact surface between the valve element and the valve seat, so that the described problems with regard to adhesion are thereby also defused. At the same time the sealing effect is improved in the closed state.
  • an embodiment has been found to be particularly advantageous, having a nut-spindle system.
  • the rotational movement of a drive motor can be converted into a combined rotary and lifting movement of the valve element in a particularly simple and effective manner.
  • the ball track can be designed in an advantageous manner so that the valve element initially only a rotational movement is granted, and from a certain point in time a combined rotational and lifting movement.
  • the ball track is initially planar and formed spirally from a certain point.
  • the actuating mechanism comprises a rotary member having a contour or cam surface which runs on an attached to the valve housing member.
  • a movement of the rotary member can be achieved by the interaction between the provided with the contour of the rotary element and the elements mounted on the valve housing elements such that this is rotated and additionally raised by forming the corresponding contour from a certain time.
  • the entire actuating mechanism including the drive is slidably mounted on the valve housing. Consequently, the actuation and drive mechanism causes not only in addition to the rotational movement according to the invention, at least at the beginning of the opening process for opening the valve required translational movement, but participates in this.
  • the exhaust gas recirculation valve according to the invention can finally be combined with a reset or fail-save mechanism, which is subjected to torsion and preferably additionally to pressure when the valve is opened.
  • a fail-safe function takes into account the fact that the valve element according to the invention is given a rotational movement, so that the return can be done safely by a twisted return device that gives the valve element the required rotation to ensure a closing movement. In experiments, it has been found that this can be achieved particularly safe closing the valve.
  • the exhaust gas recirculation valve 10 has a valve housing 12, which in its lower region through an opening 14 which with a Valve seat 16 is provided, is flowed through with exhaust gas.
  • the opening 14 is closed by a valve element, in the case shown a valve plate 18.
  • the valve disk 18 is attached to a valve stem 20, which in the case shown is designed as a spindle 22 in its upper area.
  • the spindle 22 is, as shown, ball-mounted in a nut 24 firmly anchored in the valve housing 12.
  • a so-called harmonic drive gear 26 or other compact gearbox is provided to transmit the rotational movement of an electric motor 28 to the valve lifter 20.
  • the spindle 22 is ball-mounted in the nut 24.
  • the ball raceways can be designed such that the spindle performs a rotational movement to a certain extent only, in order, as described above, to dislodge the valve disk 18 from the valve seat 16 with relatively little effort, despite bonding.
  • the ball raceways are further designed so that they provide at a certain point in addition by a spiral design of the ball raceways for a translational movement of the valve disk 18, and a corresponding, relatively fast opening of the valve disk 18.
  • the return spring 30 When opening the valve, the return spring 30 is both twisted, so twisted, and because of the axial displacement, loaded on pressure. The interaction of the energy stored in the return spring 30 in this manner can reliably ensure closure of the valve even in the event that the electric motor 28 fails for some reason.
  • this fail-safe device in the form of the return spring 30 is the same.
  • the actuation of the valve, in particular the lifting of the valve plate 18 of the valve seat 16 is carried out in this embodiment, however, different than in the embodiment of Fig. 1.
  • a (in Fig. 2 not recognizing) motor the rotational movement of which is transmitted via a spur gear 34 or other compact gear on a rotating element, in particular a gear 36 which is fixedly connected to the valve stem 20.
  • the coil spring 30 takes over in this case, the additional function of the gear 36 to press against so-called run-up rollers 38 which are rotatably mounted in the valve housing 12.
  • 12 respective axes are firmly connected to the valve housing.
  • the contour can be adjusted, for example, so that it is initially unchanged in terms of their height with respect to the run-up rollers 38, so that the valve disc 18 performs only a rotational movement on the valve seat 16 at the beginning of the opening process. This allows the described easy release of any adhesions and a cleaning of the valve seat 16th
  • the contour may be formed by steeper slope such that a faster opening occurs. This means that high opening forces can be transmitted during the phase of a low slope of the contour. It should be noted that such a characteristic can also be realized by a corresponding design of the ball raceways in the spindle-nut system of the embodiment of Fig. 1.
  • the Gear 36 is rotated and additionally raised, so that the fixed to the gear 36 and, anchored to the valve housing 12 return spring 30 is loaded on both pressure and torsion. This ensures, if necessary, an implementation of the energy stored in the spring such that the valve is securely closed by reverse rotation of the gear 36.
  • a further embodiment of the exhaust gas recirculation valve according to the invention is shown, which differs from the embodiment of FIG. 2 by the type of transmission, with which the rotational movement of the electric motor is transmitted to the valve.
  • a harmonic drive gear 26 or other compact gearbox is provided.
  • the return spring 30 is one of the gears 36 which is fixedly connected to the valve stem 20, pressed in this embodiment against run-up rollers 38 which are rotatably mounted on the valve housing 12. Consequently, the conversion of the rotational movement takes place in a lifting movement of the valve disk 18 similar to the embodiment of Fig. 2 via a formed on the gear 36 contour, which cooperates with the run-up rollers.
  • a valve stem guide 40 and a seal 32 can be seen in the central region of the valve stem 20, a valve stem guide 40 and a seal 32 can be seen.
  • FIG. 3 A comparison of Figures 3 and 1 shows that from the closed position (see Fig. 3) to the open position (see Fig. 1) of the valve coupled to the shaft of the electric motor gear and the gear 36 (see Fig. 3) of the harmonic drive transmission 26 against each other.

Claims (7)

  1. Soupape de retour des gaz d'échappement avec un élément de soupape mobile par translation, en particulier une tête de soupape (18), et un mécanisme d'actionnement qui impartit à l'élément soupape (18), au moins au début de l'opération d'ouverture, un mouvement de rotation s'effectuant autour de son axe.
  2. Soupape de retour des gaz d'échappement selon la revendication 1, caractérisée en ce que le mécanisme d'actionnement comprend un système à écrou (24) et à broche (22).
  3. Soupape de retour des gaz d'échappement selon la revendication 2, caractérisée en ce que la broche (22) est montée sur roulement à billes, tandis que la voie de roulement des billes est conformée de façon à présenter des tronçons de configuration plane et des tronçons de configuration hélicoïdale.
  4. Soupape de retour des gaz d'échappement selon au moins l'une des revendications précédentes, caractérisée en ce que le mécanisme d'actionnement présente un élément rotatif (36) avec un contour qui coopère avec au moins un élément (38) disposé sur le logement de soupape (12).
  5. Soupape de retour des gaz d'échappement selon au moins l'une des revendications précédentes, caractérisée en ce que le mécanisme d'actionnement présente des roues dentées pouvant se déplacer par translation l'une contre l'autre.
  6. Soupape de retour des gaz d'échappement selon au moins l'une des revendications précédentes, caractérisée en ce que le mécanisme d'actionnement est monté, de préférence, conjointement avec un entraînement (28), déplaçable sur le logement de soupape (12).
  7. Soupape de retour des gaz d'échappement selon au moins l'une des revendications précédentes, caractérisée en ce qu'il est prévu un dispositif de rappel (30) qui, lors de l'ouverture de la soupape, effectue une torsion et de préférence, en plus, une compression.
EP00127215A 1999-12-21 2000-12-14 Soupape de re-circulation de gaz d'échappement Expired - Lifetime EP1111227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19961756A DE19961756C1 (de) 1999-12-21 1999-12-21 Abgasrückführventil
DE19961756 1999-12-21

Publications (3)

Publication Number Publication Date
EP1111227A2 EP1111227A2 (fr) 2001-06-27
EP1111227A3 EP1111227A3 (fr) 2002-03-20
EP1111227B1 true EP1111227B1 (fr) 2006-11-08

Family

ID=7933641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00127215A Expired - Lifetime EP1111227B1 (fr) 1999-12-21 2000-12-14 Soupape de re-circulation de gaz d'échappement

Country Status (5)

Country Link
EP (1) EP1111227B1 (fr)
AT (1) ATE344881T1 (fr)
DE (2) DE19961756C1 (fr)
ES (1) ES2274762T3 (fr)
PT (1) PT1111227E (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108043B4 (de) * 2001-02-20 2005-09-01 Robert Bosch Gmbh Selbstreinigende Ventile im Zuluft- oder Abgassystem bei Verbrennungskraftmaschinen
EP1526271B1 (fr) * 2003-10-24 2007-06-13 Cooper-Standard Automotive (Deutschland) GmbH Soupape de recirculation de gaz d'échappement
WO2006024495A1 (fr) 2004-08-30 2006-03-09 Behr Gmbh & Co. Kg Soupape en particulier soupape de piston rotatif, et systeme de retour des gaz d'echappement comprenant une soupape de ce type
EP1846720B1 (fr) * 2005-02-03 2020-12-23 MAHLE Behr GmbH & Co. KG Echangeur de chaleur de gaz d'echappement, notamment pour automobiles
EP1793114B1 (fr) * 2005-12-02 2013-05-15 Behr Thermot-tronik GmbH Appareil, en particulier vanne de recyclage des gaz d'échappement, pour commander un courant de fluide
DE502008002568D1 (de) 2008-10-06 2011-03-24 Cooper standard automotive deutschland gmbh Abgasrückführventil
EP2418373A1 (fr) 2010-08-12 2012-02-15 Cooper-Standard Automotive (Deutschland) GmbH Actionneur et soupape de recyclage de gaz d'échappement, soupape de décharge ou géométrie de turbines variable d'une turbosoufflante dotée d'un actionneur
DE102010050668A1 (de) * 2010-11-09 2012-05-10 Voith Patent Gmbh Ventileinrichtung
DE102011051587A1 (de) * 2011-07-05 2013-01-10 Benteler Automobiltechnik Gmbh Druckwellenladeranordnung zum Aufladen einer Verbrennungskraftmaschine sowie Verfahren zum Betreiben einer Druckwellenladeranordnung
DE102014109289B4 (de) 2014-07-02 2020-01-30 Pierburg Gmbh Ventilvorrichtung zur Abgasrückführung in einem Verbrennungsmotor
FR3040746B1 (fr) * 2015-09-04 2019-05-03 Valeo Systemes De Controle Moteur Dispositif d'actionnement pour moteur a combustion
FR3045108A1 (fr) * 2015-12-10 2017-06-16 Peugeot Citroen Automobiles Sa Ensemble forme d’une soupape autonettoyante et de son dispositif d’actionnement
CN110486200A (zh) * 2019-09-11 2019-11-22 潍柴西港新能源动力有限公司 改进的新式egr阀及其控制方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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
DE3609611C2 (de) * 1985-08-29 1994-01-27 Bosch Gmbh Robert Abgasrückführregelvorrichtung für eine Brennkraftmaschine
US5318064A (en) * 1993-09-24 1994-06-07 Marotta Scientific Controls, Inc. Motor-operated valve
DE19603592C1 (de) * 1996-02-01 1997-05-15 Daimler Benz Ag Ventilsteuerung für eine Brennkraftmaschine
FR2748780B1 (fr) * 1996-05-14 1998-08-14 Sagem Allumage Vanne pour systeme de recirculation des gaz d'echappement de moteur a combustion interne
DE19704091A1 (de) * 1997-02-04 1998-08-06 Wahler Gmbh & Co Gustav Abgasrückführventil für eine Brennkraftmaschine
DE19733964B4 (de) * 1997-08-06 2010-04-29 Volkswagen Ag Ventilanordnung zur Steuerung eines rückgeführten Abgasstromes
FR2772429B1 (fr) * 1997-12-16 2000-06-02 Sagem Vanne de controle pour systeme de recirculation des gaz d'echappement d'un moteur a combustion interne

Also Published As

Publication number Publication date
ATE344881T1 (de) 2006-11-15
DE19961756C1 (de) 2001-04-19
EP1111227A2 (fr) 2001-06-27
PT1111227E (pt) 2006-12-29
DE50013715D1 (de) 2006-12-21
EP1111227A3 (fr) 2002-03-20
ES2274762T3 (es) 2007-06-01

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