EP0856657B1 - Abgasrückführventil für eine Brennkraftmaschine - Google Patents
Abgasrückführventil für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP0856657B1 EP0856657B1 EP97119328A EP97119328A EP0856657B1 EP 0856657 B1 EP0856657 B1 EP 0856657B1 EP 97119328 A EP97119328 A EP 97119328A EP 97119328 A EP97119328 A EP 97119328A EP 0856657 B1 EP0856657 B1 EP 0856657B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- drive
- gas recirculation
- recirculation valve
- valve according
- 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
- 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 a Internal combustion engine with the features in the preamble of the claim 1.
- the gear-shaping device has an eccentric one Cam on whose outer peripheral surface is the cam track to act on the stop of the actuating element forms.
- Such a cam is also from JP-A-55081253 for control an exhaust gas recirculation valve known.
- a disadvantage of one cam control is that it is only in one direction, z. B. in the valve opening direction, is effective and thus Valve actuation in the other direction, e.g. B. closing direction, another drive, e.g. B. a spring, which is due the risk of spring breakage is a weak point in the system.
- FR-A-2 506 389 In another known exhaust gas recirculation valve (FR-A-2 506 389) has the forming device of a thread transmission on, by means of a rotatable spindle, the engages in a sleeve-like spindle nut, the orbital movement the spindle can be converted into a translational movement.
- either the threaded spindle can be axially immovable and engage directly in an axially displaceable spindle nut, which are integral with the axially displaceable actuator of the valve, or the rotatable spindle nut is in turn also relative to a fixed one Threaded sleeve axially displaceable, by means of which an external thread is geared, wherein then the axially displaceable actuator in the Intervenes inside the sleeve-shaped spindle nut and by means of this can be actuated axially, at least in one valve actuation direction.
- Such a gear shaping device is complex.
- the adjustment device In another known exhaust gas recirculation valve (DE 296 12 465 U1) the adjustment device consists of a vacuum adjuster, one to the actuator with valve member Coaxial force generated in the closed position of the valve member this acts on a force in the opening direction a, which results from the pressure of the exhaust gas in the exhaust duct.
- the adjustment device must therefore have a correspondingly high, opposite direction Apply the clamping force continuously.
- the adjustment device is accordingly complex and large-volume. apart one of them becomes another, not of a ruling one and / or adjusting device which is dependent on negative pressure sought.
- 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 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.
- the invention is based on one in the drawing shown embodiment explained in more detail.
- the drawing shows a schematic section of a part of an exhaust gas recirculation valve in the closed position.
- 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 section 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 the the rotary drive movement of the drive 25 in a Translational movement of the actuator 20 is deformable.
- valve member 18 As can be seen, lies in the shown Closed position of the valve member 18 with the side 19 on On valve seat 17, which faces the actuator 20, the valve member 18 towards the inlet side 15, in the drawing can be brought down to its open position.
- the Establishing this open position therefore requires one Push down.
- the valve member 18 will by means of a closing spring 28 into the closed position shown pulled, the closing spring 28 so arranged and is designed to accommodate the opening movement opposed and after opening when the actuator is released 20 automatically returns to the closed position allows.
- the closing spring 28 is e.g. as cylindrical coil spring formed in the area of 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 moves into the closed position become.
- 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 applied.
- 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 the cam track 30th 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.
- gear-changing device is designed as a backdrop.
- the cam 29 has a cam track Groove, 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.
- the drive 25 can be made 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 is reached again. Again, depending on Design of the drive 25, 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 the valve member 18 is pressed automatically against the valve seat 17 under the pressure of the exhaust gas on the inlet side 15. Any negative pressure in the fresh air duct 12 also supports this automatic pressing. This ensures a reliable closed position even at high pressures on the inlet side 15.
- the adjusting device 23 and the shaping device 27 are relieved of forces which otherwise act on them under the exhaust gas pressure.
- valve adjustment for example in the open position, so that any forces acting under the pressure of the exhaust gas and axially opposing the opening movement are kept away from the drive and are not absorbed by it must and do not lead to a force opposing the actuating force in the opening direction blocking the drive.
- the adjustment device enables fast valve adjustment with a low actuating torque.
- the rapid adjustment has the advantage that changes in the load of the internal combustion engine can take place in the shortest possible time without undesired exhaust gases occurring. Should an automatic resetting of the cam 29 be necessary in some cases, this can be done on the output shaft 26 or instead on the cam 29
- Spring 33 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.
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)
Description
Sollte fallweise eine selbsttätige Rückstellung des Nockens 29 notwendig sein, so kann hierzu an der Abtriebswelle 26 oder statt dessen auch am Nocken 29 eine
Claims (15)
- Abgasrückführventil an einer Brennkraftmaschine, mit einem Gehäuse (11), das einen Abgaskanal (14) mit einem Ventilsitz (17) enthält, der von einem Ventilglied (18) beherrscht wird, dessen Betätigungsglied (20), z.B. Stößel, im Gehäuse (11) verschiebbar geführt ist und von einer Verstelleinrichtung (23) betätigt wird, die einen rotatorisch arbeitenden Antrieb (25) und eine dem Antrieb (25) nachgeschaltete, getriebliche Umformeinrichtung (27) autweist, mittels der die Drehantriebsbewegung des Antriebes (25) in eine Translationsbewegung des Betätigungsgliedes (20) mit Ventilglied (18) umformbar ist und die einen vom Antrieb (25) drehantreibbaren Nocken (29) mit einer exzentrischen Nockenbahn (30) aufweist, mit der das Betätigungsglied (20) unmittelbar oder mittelbar in Berührung steht, das, vorzugsweise am Ende, einen Anschlag (31) trägt, der an der Nockenbahn (30) des Nockens (29) anliegt,
dadurch gekennzeichnet, dass die Nockenbahn als Nut ausgebildet ist und dass der Anschlag des Betätigungsgliedes (20) aus einem Gleit- oder Rollkörper gebildet ist, der in die Nut eingreift. - Abgasrückführventil nach Anspruch 1,
dadurch gekennzeichnet, dass das Ventilglied (18) mit der Seite (19) am Ventilsitz (17) anliegt, die dem Betätigungsglied (20) zugewandt ist, und zur Einlassseite (15) des Abgases hin in seine Öffnungsstellung bewegbar ist. - Abgasrückführventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass das Ventilglied (18) mittels einer auf das Betätigungsglied (20) wirkenden Schließfeder (28) in Schließstellung gezwungen wird und entgegen der Schließfeder (28) in Öffnungsstellung bringbar ist. - Abgasrückführventil nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass das Ventilglied (18) auf der dem Ventilsitz (17) zugewandten Seite (19) etwa kugelabschnittförmig und der Ventilsitz (17) etwa kegelstumpfförmig, oder umgekehrt, ausgebildet sind. - Abgasrückführventil nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass der rotatorisch arbeitende Antrieb (25) eine Drehantriebsbewegung in einer Drehrichtung zur Betätigung des Ventilgliedes (18) in dessen Öffnungsstellung erzeugt. - Abgasrückführventil nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass der rotatorisch arbeitende Antrieb (25) eine Drehantriebsbewegung in entgegengesetzter Drehrichtung zur Betätigung des Ventilgliedes (18) in dessen Schließstellung erzeugt. - Abgasrückführventil nach einem der Ansprüche 3 bis 6,
dadurch gekennzeichnet, dass das Ventilglied (18) bei Freigabe mittels der Schließfeder (28) selbsttätig in die Schließstellung bewegbar ist. - Abgasrückführventil nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass der rotatorisch arbeitende Antrieb (25) mit seiner Längsmittelachse quer, insbesondere etwa rechtwinklig, zum Betätigungsglied (20) ausgerichtet ist. - Abgasrückführventil nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass der rotatorisch arbeitende Antrieb (25) als Schrittmotor ausgebildet ist. - Abgasrückführventil nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass der rotatorisch arbeitende Antrieb (25) aus einem Drehmagneten gebildet ist. - Abgasrückführventil nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass die getriebliche Umformeinrichtung (27) als Nockenantrieb ausgebildet ist. - Abgasrückführventil nach einem der Ansprüche 3 bis 11,
dadurch gekennzeichnet, dass die Schließfeder (28) mit einem Ende am Gehäuse (11) und mit dem anderen Ende am Anschlag (31), z.B. der Platte, abgestützt ist und als Druckfeder ausgebildet ist, oder dass die Schließfeder Teil des Antriebs (25) ist, z.B. als Drehfeder ausgebildet ist. - Abgasrückführventil nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, dass der Nocken (29) zumindest einen Exzenterteil (32) aufweist. - Abgasrückführventii nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, dass der mindestens eine Exzenterteil (32) symmetrisch ausgebildet ist. - Abgasrückführventil nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet, dass an der Abtriebswelle (26) des Antriebes (25) oder am Nocken (29) eine zurückstellende Feder (33), insbesondere Drehfeder, angreift.
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 EP0856657A2 (de) | 1998-08-05 |
EP0856657A3 EP0856657A3 (de) | 1998-12-02 |
EP0856657B1 true EP0856657B1 (de) | 2003-01-22 |
Family
ID=7819225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97119328A Expired - Lifetime EP0856657B1 (de) | 1997-02-04 | 1997-11-05 | Abgasrückführventil für eine Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0856657B1 (de) |
BR (1) | BR9800539A (de) |
DE (2) | DE19704091A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7533659B2 (en) | 2006-07-06 | 2009-05-19 | Cooper-Standard Automotive (Deutchland) Gmbh | Exhaust-gas recirculation valve |
WO2019121286A1 (de) | 2017-12-18 | 2019-06-27 | Pierburg Gmbh | Ventilvorrichtung für eine verbrennungskraftmaschine |
Families Citing this family (15)
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 |
DE19961756C1 (de) * | 1999-12-21 | 2001-04-19 | Siebe Automotive Deutschland Gmbh | Abgasrückführventil |
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 |
DE10104227C1 (de) * | 2001-01-31 | 2003-01-16 | Bosch Gmbh Robert | Einrichtung zur Behandlung von Gasströmen |
DE10108043B4 (de) * | 2001-02-20 | 2005-09-01 | Robert Bosch Gmbh | Selbstreinigende Ventile im Zuluft- oder Abgassystem bei Verbrennungskraftmaschinen |
DE10125094A1 (de) * | 2001-05-23 | 2002-11-28 | Siemens Ag | Abgasrückführeinrichtung |
EP1462643A1 (de) * | 2003-03-25 | 2004-09-29 | Cooper-Standard Automotive (Deutschland) GmbH | Ventil-Öffnungsmechanismus |
DE10336976B4 (de) * | 2003-08-12 | 2005-08-18 | Pierburg Gmbh | Ventilvorrichtung für eine Verbrennungskraftmaschine |
PT1526272E (pt) * | 2003-10-24 | 2007-03-30 | Cooper Standard Automotive D | Válvula de recirculação de gases de escape |
GB0419060D0 (en) | 2004-08-27 | 2004-09-29 | Delphi Tech Inc | Valve actuating mechanism |
ES2359659T3 (es) * | 2008-10-06 | 2011-05-25 | Cooper-Standard Automotive (Deutschland) Gmbh | Válvula de recirculación del gas de escape. |
DE102013114058A1 (de) * | 2013-12-16 | 2015-06-18 | BorgWarner Esslingen GmbH | Heißgasventil |
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5581253A (en) * | 1978-12-12 | 1980-06-19 | Nissan Motor Co Ltd | Exhaust gas recycling controller |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE29612465U1 (de) | 1996-07-18 | 1996-09-05 | Gustav Wahler Gmbh U. Co, 73730 Esslingen | Abgasrückführventil für eine Brennkraftmaschine |
-
1997
- 1997-02-04 DE DE19704091A patent/DE19704091A1/de not_active Withdrawn
- 1997-11-05 EP EP97119328A patent/EP0856657B1/de not_active Expired - Lifetime
- 1997-11-05 DE DE59709190T patent/DE59709190D1/de not_active Expired - Lifetime
-
1998
- 1998-02-03 BR BR9800539A patent/BR9800539A/pt not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5581253A (en) * | 1978-12-12 | 1980-06-19 | Nissan Motor Co Ltd | Exhaust gas recycling controller |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7533659B2 (en) | 2006-07-06 | 2009-05-19 | Cooper-Standard Automotive (Deutchland) Gmbh | Exhaust-gas recirculation valve |
WO2019121286A1 (de) | 2017-12-18 | 2019-06-27 | Pierburg Gmbh | Ventilvorrichtung für eine verbrennungskraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP0856657A3 (de) | 1998-12-02 |
DE59709190D1 (de) | 2003-02-27 |
DE19704091A1 (de) | 1998-08-06 |
BR9800539A (pt) | 1999-06-08 |
EP0856657A2 (de) | 1998-08-05 |
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