EP0856657A2 - Soupape de recirculation de gaz d'échappement pour un moteur à combustion - Google Patents

Soupape de recirculation de gaz d'échappement pour un moteur à combustion Download PDF

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Publication number
EP0856657A2
EP0856657A2 EP97119328A EP97119328A EP0856657A2 EP 0856657 A2 EP0856657 A2 EP 0856657A2 EP 97119328 A EP97119328 A EP 97119328A EP 97119328 A EP97119328 A EP 97119328A EP 0856657 A2 EP0856657 A2 EP 0856657A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
recirculation valve
valve according
drive
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
Application number
EP97119328A
Other languages
German (de)
English (en)
Other versions
EP0856657B1 (fr
EP0856657A3 (fr
Inventor
Frank Zimmermann
Thomas Peuker
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.)
Gustav Wahler GmbH and Co KG
Original Assignee
Gustav Wahler GmbH and Co KG
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 Gustav Wahler GmbH and Co KG filed Critical Gustav Wahler GmbH and Co KG
Publication of EP0856657A2 publication Critical patent/EP0856657A2/fr
Publication of EP0856657A3 publication Critical patent/EP0856657A3/fr
Application granted granted Critical
Publication of EP0856657B1 publication Critical patent/EP0856657B1/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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • 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 relates to an exhaust gas recirculation valve for an internal combustion engine with the features in the preamble of Claim 1.
  • the adjustment device In a known exhaust gas recirculation valve of this type (DE 296 12 465, U1) the adjustment device consists of a vacuum adjuster, the one coaxial to the actuator with valve member generated. In the closed position of the valve member acts on this a force in the opening direction, which results from the pressure of the exhaust gas in the exhaust duct. The adjustment device must therefore be a correspondingly high, opposite Apply the clamping force continuously. The adjustment device is accordingly complex and large-volume. Except one of them becomes another, not of a ruling one and / or adjusting device which is dependent on negative pressure sought. In everything, the exhaust gas recirculation valve should be reliable work as well as small, light and compact be and for the movement of the valve member in the open position or closed position of the adjustment device only require low forces, which are accordingly light and should be designed compact.
  • the invention has for its object in an exhaust gas recirculation valve of the type mentioned above the above Requirements to take into account and the disadvantages mentioned to eliminate.
  • the task is the beginning of an exhaust gas recirculation valve mentioned type according to the invention by the features in Claim 1 solved.
  • the rotary drive with Downstream forming device have the following advantages achieved.
  • the separation makes it possible for any under forces acting on the pressure of the exhaust gas from the shaping device be caught and thus the drive itself from such forces are relieved.
  • This makes it possible to make the drive small, light and compact and to choose one that is only minor Energy consumption required and an actuating movement of the valve with only small actuation forces or actuation torques enables.
  • Another advantage is that because of that too a different type of drive can be used, the Functionality is not dependent on an existing one and / or negative pressure to be generated.
  • the drive can e.g.
  • the invention also provides the prerequisites for a quick adjustment of the valve member is possible, load changes in can be done in the shortest possible time without being intolerable Exhaust gases or the like. Disadvantages occur.
  • FIG. 1 is the essential for understanding schematically Part of an exhaust gas recirculation valve 10 according to one First embodiment shown that for an internal combustion engine is determined.
  • the valve 10 has a housing 11 with inner fresh air duct 12 through which e.g. in the direction arrows 13 fresh air, e.g. the intake air of the internal combustion engine, is passed through.
  • the outlet side 16 opens into the fresh air duct 12.
  • the Exhaust duct 14 contains between the inlet side 15 and the Outlet side 16 a e.g.
  • valve seat 17 which is controlled by a valve member 18 which on the side 19 facing valve seat 17 crowned, e.g. spherical segment-shaped, is trained.
  • a reverse design is also possible.
  • an actuator 20 e.g. in form of a Rod, a plunger or the like. That means in the housing 11 a socket 21 is slidably guided.
  • the valve member 18 becomes translational in the direction of arrow 22 between the closed position shown and the downward opening position emotional.
  • An adjusting device 23 serves this purpose.
  • a rib 24 is arranged, which is an integral part of the housing 11 can be and as a temperature shield and as protection to reduce any dirt deposits serves above the rib 24.
  • the adjusting device 23 has a rotating one Drive 25 with output shaft 26 on the cross, in particular aligned approximately at right angles to the actuator 20 is.
  • the drive 25 is e.g. designed as a stepper motor. In the embodiment shown, it exists from a rotary magnet of conventional type. Also other rotary drives are within the scope of the invention.
  • the adjustment device 23 also has a drive 25 connected downstream gear-changing device 27, by means of which the rotary drive movement of the drive 25 in a Translational movement of the actuator 20 is deformable.
  • Fig. 1 lies in the shown Closed position of the valve member 18 with the side 19 on Valve seat 17 facing the actuator 20, the valve member 18 toward the inlet side 15, in Fig. 1st can be brought down to its open position.
  • the Establishing this open position therefore requires one Impact movement in Fig. 1 down.
  • the valve member 18 will by means of a closing spring 28 in the closed position shown pulled, the closing spring 28 arranged so and is designed to accommodate the opening movement opposed and after opening when the actuator is released 20 automatically returns to the closed position enables.
  • the closing spring 28 is e.g. as cylindrical coil spring formed in the area of in Fig. 1 upper end of the actuator 20 coaxially arranged to this and with its lower end on the housing 11 is supported, while the other end immediately or acts indirectly on the actuator 20.
  • the closing spring 28 is designed as a compression spring.
  • the drive 25 generates a rotary drive movement in one Direction of rotation, e.g. clockwise to operate the Valve member 18 in its open position.
  • the return movement can be in the closed position when the actuator is released 20 done by the closing spring 28.
  • a rotary drive movement in the same direction of rotation, clockwise, as for the generation of the open position generate and thereby release the actuator 20.
  • the latter can be active due to the rotary drive movement of the drive 25 moved into the closed position will.
  • the actuator is released 20 or with gear coupling this with the Drive 25 the active movement of the actuator 20th reached in the closed position even when the Drive 25 in a different design for bringing about Closed position a rotary drive movement in to the first Direction of rotation opposite direction of rotation, thus counterclockwise, generated.
  • the forming device 27 is designed here as a cam drive. This has a rotary drive driven by the drive 25 Cam 29 with eccentric cam track 30 with which the Actuator 20 indirectly via a stop 31 in There is contact, but instead an immediate one Contact directly with the facing end of the actuator 20 can be provided.
  • the stop 31 is on Attached end of the actuator 20 and is e.g. from a plate aligned transversely to the longitudinal central axis, on the top of which the cam 29 with the cam track 30 is present.
  • the Closing spring 28 On the underside of the stop 31 is the Closing spring 28 which is supported on the end thereof.
  • the Cam 29 has at least one to the output shaft 26 eccentric eccentric part 32 on which the cam track 30 e.g. in the form of its outer surface.
  • the at least one Eccentric part 32 is based on the diametral of the output shaft 26 symmetrical.
  • the drive 25 after the opening position has been established of the valve member 18 but also in the cam 29 an opposite direction of rotation, thus counterclockwise, reset until the starting position shown in Fig. 1 is reached again.
  • the return movement of the Cam 29 via the closing spring 28 and the actuator 20 take place or at least be supported.
  • the exhaust gas recirculation valve 10 has the advantage that under the pressure of the exhaust gas on the inlet side 15, the valve member 18 automatically against the valve seat 17 is pressed. Also a possible negative pressure in the fresh air duct 12 this supports automatic Contact pressure. This is a reliable closed position guaranteed even at high pressures on the inlet side 15.
  • the adjusting device 23 and shaping device 27 is from Forces that otherwise act on it under the exhaust gas pressure, relieved. Depending on the design of the drive 25 and in particular the forming device 27 is also in the valve adjustment e.g.
  • the adjustment device enables quick valve adjustment with low necessary actuating torque.
  • the quick adjustment has that Advantage that load changes of the internal combustion engine in can be done in the shortest possible time without being unwanted Exhaust gases occur.
  • Spring 23 may be provided, here as a torsion spring is trained and with its other end somewhere on Housing 11 is supported.
  • the spring 33 is designed here and arranged that when you turn the Cam 29 is stretched counterclockwise and one resilient clockwise return movement. If the effect is to be in opposite directions, the spring 33 accordingly mounted in opposite directions.
  • the gear forming device as a link device educated.
  • the cam 29 has a cam track Groove on, which is designed as an outer or inner cam track.
  • the stop 31 connected to the actuator 20 is here e.g. formed from a sliding or rolling body, e.g. from a sliding block or from a roll that in the groove engages.
  • FIGS. 2 to 4 are for the parts of the first embodiment correspond to 100 larger reference numerals, so that thereby avoiding repetitions on the description the first embodiment is referred to.
  • the drive 125 is coaxial arranged to the actuator 120 and as in the first embodiment e.g. designed as a rotating magnet.
  • the gear Forming device 127 which to the actuator 120 coaxial output shaft 126 is connected, has a sliding element 134 which can be driven in rotation on that rotates in the housing 111 and slidably is held and with the actuator 120 to it Axial displacement is connected without rotary actuation.
  • the actuator 120 is in the range of Bottom of the sliding member 134 but rotatable on the latter firmly arranged in both axial directions.
  • a only schematically indicated with 135 arrangement of thrust bearings and radial bearings, which is also possible with plain bearings are.
  • the actuator 120 may therefore end up being one have enlarged head 136, the circumferential by means a radial bearing, e.g. a bearing bush, and axially by means of an axial bearing located in the Sliding element 134 is rotatably mounted relative to this and is axially connected to it in both directions.
  • a radial bearing e.g. a bearing bush
  • the sliding element 134 e.g. in the form of a cylindrical drum, is in an opening 137 forming a guide on the Top of the housing 111 rotatable and slidable added.
  • means 138 are provided, by means of which the Drive 125 resulting rotation of the sliding element 134 in a translational movement of the sliding element 134 and thus of the actuator 120 is deformable.
  • these means 138 consist Threads of the housing 111 on the one hand and the sliding element 134 on the other hand.
  • the sliding element 134 has at least one helical and roughly corresponding to a thread running outer groove 139 into which at least one in Housing 111 held, directed transversely to the longitudinal central axis Projection 140 engages. Even if only a projection 140 is indicated it is understood, however, that e.g. two Projections that e.g. diametrically opposite and are axially offset, or even more projections 140 can be provided.
  • the outer groove 139 is approximately trapezoidal educated. In keeping with that, at least a projection 140 is approximately frustoconical, at least on the end area which engages in the outer groove 139.
  • the at least one Projection 140 is designed as a rolling body, whereby the Friction between the outer groove 139 and the at least one Projection 140 is reduced.
  • the protrusion 140 is e.g. mounted rotatably in the housing 111 by means of a bearing 141. It is axially inserted into the outer groove 139 by means of a spring 142 forced into it resiliently.
  • the spring 142 sits in the Housing 111 and works on a plunger 143 that with its spherical head approximately axially at the projection 140 is applied and in this way the force of the spring 142nd transmits.
  • the sliding element 134 is connected to the output shaft 126 of the Drive 125 coupled so that the rotary drive of the drive 125 is transferred to the sliding element 134 and the latter is axially displaceable relative to the output shaft 126.
  • the sliding element 134 contains one to the output shaft 126 approximately coaxial slot 144 into which the output shaft 126 engages, which carries a coupling member 145 at the end, whose width is at least essentially the width of the Slot corresponds to 144 and therefore positively in the Slot 144 engages, while at the same time being axially displaceable is ensured relative to the slot 144.
  • the at least one projection 140 also as a differently designed one, Rotary body rotatable about a radial axis or instead in particular also be designed as a ball, the z. B. with a part in the housing 111 is rotatable and with a other, inward and toward slide 134 engages protruding part in the outer groove 139. With such a configuration, the friction reduced even further.
  • the means 138 consists of threads of the housing 111 on the one hand and the sliding element 134 on the other hand, engage balls in the thread of the housing 111 and / or of the sliding member 134.
  • the arrangement in the manner of a Ball screw is designed. If such balls in the threads can roll freely, a ball return be provided for the balls. Instead, they can Balls can also be held in a ball bushing that is radial arranged between the housing 111 and the sliding element 134 is.

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)
  • Lift Valve (AREA)
EP97119328A 1997-02-04 1997-11-05 Soupape de recirculation de gaz d'échappement pour un moteur à combustion Expired - Lifetime EP0856657B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19704091 1997-02-04
DE19704091A DE19704091A1 (de) 1997-02-04 1997-02-04 Abgasrückführventil für eine Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP0856657A2 true EP0856657A2 (fr) 1998-08-05
EP0856657A3 EP0856657A3 (fr) 1998-12-02
EP0856657B1 EP0856657B1 (fr) 2003-01-22

Family

ID=7819225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119328A Expired - Lifetime EP0856657B1 (fr) 1997-02-04 1997-11-05 Soupape de recirculation de gaz d'échappement pour un moteur à combustion

Country Status (3)

Country Link
EP (1) EP0856657B1 (fr)
BR (1) BR9800539A (fr)
DE (2) DE19704091A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002016749A2 (fr) * 2000-08-21 2002-02-28 Siemens Vdo Automotive Inc. Soupape de mise en circulation des gaz d'echappement, comprenant une tringlerie de came pour convertir un mouvement angulaire constant en mouvement non lineaire
EP1111227A3 (fr) * 1999-12-21 2002-03-20 Siebe Automotive (Deutschland) GmbH Soupape de re-circulation de gaz d'échappement
EP1462643A1 (fr) * 2003-03-25 2004-09-29 Cooper-Standard Automotive (Deutschland) GmbH Mécanisme d'ouverture d'une soupape
EP1526272A1 (fr) * 2003-10-24 2005-04-27 Cooper-Standard Automotive (Deutschland) GmbH Soupape de recirculation de gaz d'échappement
DE10108043B4 (de) * 2001-02-20 2005-09-01 Robert Bosch Gmbh Selbstreinigende Ventile im Zuluft- oder Abgassystem bei Verbrennungskraftmaschinen
EP1632674A2 (fr) 2004-08-27 2006-03-08 Delphi Technologies, Inc. Mécanisme de commande de soupape
EP2172682A1 (fr) * 2008-10-06 2010-04-07 Cooper-Standard Automotive (Deutschland) GmbH Soupape de recyclage de gaz d'échappement
DE102013114058A1 (de) * 2013-12-16 2015-06-18 BorgWarner Esslingen GmbH Heißgasventil
DE102015111461A1 (de) 2015-05-07 2016-11-10 BorgWarner Esslingen GmbH Abgasrückführventil und Verfahren zur Verbesserung eines solchen Ventils
DE102015111460A1 (de) 2015-05-07 2016-11-10 BorgWarner Esslingen GmbH Ventil
DE102017130323B3 (de) 2017-12-18 2019-05-02 Pierburg Gmbh Ventilvorrichtung für eine Verbrennungskraftmaschine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830230C2 (de) * 1998-04-11 2002-05-23 Man Nutzfahrzeuge Ag Rückschlagventil für Abgasrückführung
DE19927186A1 (de) * 1999-06-15 2000-12-28 Daimler Chrysler Ag Abgasrückführeinrichtung mit einem Tellerventil
DE10104227C1 (de) * 2001-01-31 2003-01-16 Bosch Gmbh Robert Einrichtung zur Behandlung von Gasströmen
DE10125094A1 (de) * 2001-05-23 2002-11-28 Siemens Ag Abgasrückführeinrichtung
DE10336976B4 (de) * 2003-08-12 2005-08-18 Pierburg Gmbh Ventilvorrichtung für eine Verbrennungskraftmaschine
PT1876348E (pt) 2006-07-06 2009-11-04 Cooper Standard Automotive D Válvula de recirculação de gases de escape

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29612465U1 (de) 1996-07-18 1996-09-05 Gustav Wahler Gmbh U. Co, 73730 Esslingen Abgasrückführventil für eine Brennkraftmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5581253A (en) * 1978-12-12 1980-06-19 Nissan Motor Co Ltd Exhaust gas recycling controller
JPS57193751A (en) * 1981-05-25 1982-11-29 Mikuni Kogyo Co Ltd Egr valve and its control method
US4561408A (en) * 1984-01-23 1985-12-31 Borg-Warner Corporation Motorized flow control valve
FR2681381A1 (fr) * 1991-09-16 1993-03-19 Labinal Perfectionnements apportes aux dispositifs de recyclage des gaz d'echappement.
DE19603592C1 (de) * 1996-02-01 1997-05-15 Daimler Benz Ag Ventilsteuerung für eine Brennkraftmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29612465U1 (de) 1996-07-18 1996-09-05 Gustav Wahler Gmbh U. Co, 73730 Esslingen Abgasrückführventil für eine Brennkraftmaschine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111227A3 (fr) * 1999-12-21 2002-03-20 Siebe Automotive (Deutschland) GmbH Soupape de re-circulation de gaz d'échappement
WO2002016749A2 (fr) * 2000-08-21 2002-02-28 Siemens Vdo Automotive Inc. Soupape de mise en circulation des gaz d'echappement, comprenant une tringlerie de came pour convertir un mouvement angulaire constant en mouvement non lineaire
US6390079B1 (en) 2000-08-21 2002-05-21 Siemens Canada Limited Exhaust gas recirculation valve including cam linkage for converting constant angular motion to non-linear motion
WO2002016749A3 (fr) * 2000-08-21 2007-10-18 Siemens Vdo Automotive Inc Soupape de mise en circulation des gaz d'echappement, comprenant une tringlerie de came pour convertir un mouvement angulaire constant en mouvement non lineaire
DE10108043B4 (de) * 2001-02-20 2005-09-01 Robert Bosch Gmbh Selbstreinigende Ventile im Zuluft- oder Abgassystem bei Verbrennungskraftmaschinen
EP1462643A1 (fr) * 2003-03-25 2004-09-29 Cooper-Standard Automotive (Deutschland) GmbH Mécanisme d'ouverture d'une soupape
EP1526272A1 (fr) * 2003-10-24 2005-04-27 Cooper-Standard Automotive (Deutschland) GmbH Soupape de recirculation de gaz d'échappement
EP1632674A2 (fr) 2004-08-27 2006-03-08 Delphi Technologies, Inc. Mécanisme de commande de soupape
EP2172682A1 (fr) * 2008-10-06 2010-04-07 Cooper-Standard Automotive (Deutschland) GmbH Soupape de recyclage de gaz d'échappement
CN101725439A (zh) * 2008-10-06 2010-06-09 库珀-标准汽车(德国)股份有限公司 废气再循环阀
US8171919B2 (en) 2008-10-06 2012-05-08 Cooper-Standard Automotive (Deutschland) Gmbh Exhaust gas recirculation valve
CN101725439B (zh) * 2008-10-06 2013-08-28 库珀-标准汽车(德国)股份有限公司 废气再循环阀
DE102013114058A1 (de) * 2013-12-16 2015-06-18 BorgWarner Esslingen GmbH Heißgasventil
DE102015111461A1 (de) 2015-05-07 2016-11-10 BorgWarner Esslingen GmbH Abgasrückführventil und Verfahren zur Verbesserung eines solchen Ventils
DE102015111460A1 (de) 2015-05-07 2016-11-10 BorgWarner Esslingen GmbH Ventil
DE102015111460B4 (de) * 2015-05-07 2020-02-06 BorgWarner Esslingen GmbH Ventil
DE102015111461B4 (de) * 2015-05-07 2020-02-06 BorgWarner Esslingen GmbH Abgasrückführventil und Verfahren zur Verbesserung eines solchen Ventils
US11174823B2 (en) 2015-05-07 2021-11-16 BorgWarner Esslingen GmbH Valve
DE102017130323B3 (de) 2017-12-18 2019-05-02 Pierburg Gmbh Ventilvorrichtung für eine Verbrennungskraftmaschine

Also Published As

Publication number Publication date
EP0856657B1 (fr) 2003-01-22
EP0856657A3 (fr) 1998-12-02
BR9800539A (pt) 1999-06-08
DE19704091A1 (de) 1998-08-06
DE59709190D1 (de) 2003-02-27

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