EP0930428B1 - Abgasrückführventil - Google Patents
Abgasrückführventil Download PDFInfo
- Publication number
- EP0930428B1 EP0930428B1 EP98120712A EP98120712A EP0930428B1 EP 0930428 B1 EP0930428 B1 EP 0930428B1 EP 98120712 A EP98120712 A EP 98120712A EP 98120712 A EP98120712 A EP 98120712A EP 0930428 B1 EP0930428 B1 EP 0930428B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- gas recirculation
- valve
- recirculation valve
- head
- 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
- F02M26/50—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
-
- 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
-
- 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
- F02M26/69—Lift valves, e.g. poppet valves having two or more valve-closing members
Definitions
- the invention relates to an exhaust gas recirculation valve according to the preamble of the main claim.
- Such an exhaust gas recirculation valve known from DE 43 38 192 A1 measures for reduction NOx emissions and to improve consumption in diesel engine exhaust depending on the operating point or map point of the intake engine combustion air to.
- the exhaust gas recirculation valve is in a connecting line between the engine exhaust line and suction line, preferably arranged directly on the intake manifold.
- the exhaust gas recirculation valve can be operated pneumatically or electrically. When the A coil builds up a magnetic field and moves the armature, which in turn hits against one Closing spring opens the valve via a valve rod.
- pneumatically operated Exhaust gas recirculation valve is created by applying a vacuum to the valve rod connected membrane opened the valve against a spring. A reverse direction of work is possible.
- the valve can be equipped with only one seat, but has in the illustrated, electrical Version for boost pressure compensation (and thus to reduce the required Positioning force) two seats connected in series.
- the valve is used to meter the amount of exhaust gas returned to the intake air position control via a potentiometer e.g. from the electromagnetic actuator in brought a defined opening position. With a pneumatic valve with position feedback the pressure in the working chamber is regulated accordingly.
- WO95 / 19497 describes an electromagnetically operated exhaust gas recirculation valve, in which a valve plate connected to a valve rod interacts with a valve seat and a connection from the exhaust duct to the intake pipe of an internal combustion engine masters, with a head arranged at the free end of the valve rod is in constant operative connection with an actuating anchor.
- An operating parameter processing computer determines depending on the operating state of the Internal combustion engine, the opening position by means of a force acting against the force of a spring Drive.
- exhaust gas recirculation especially of relatively cold exhaust gas, e.g. B. in operating conditions, in which the engine is not yet warmed up or with the help of exhaust gas cooling of heat exchangers to reduce NOx emissions, deposits occur of soot, paint and condensate in the area of the exhaust gas recirculation valve.
- the invention has for its object this costly and environmentally harmful Avoid disturbance of the exhaust gas recirculation system.
- the exhaust gas recirculation valve 1 is mounted on a suction pipe, not shown, in such a way that the exhaust gas inlet 2 is arranged in a chamber separate from the outlets 3.
- a coil 4 is arranged in the drive head 5. This cooperates with an armature 6, which acts against the force of a spring 7 in Operational connection with a valve rod 9 carrying the valve plate 8 is to be brought.
- the armature 6 interacts with a device 10 for position feedback, the output of which a computer, not shown, which processes further operating parameters is the opening adjustment of the exhaust gas recirculation valve and thus the recirculated Exhaust gas quantity determined.
- the valve plate 8 cooperate with the valve seats 11.
- the exhaust gas recirculation valve can also have a valve seat and a valve disk be executed.
- the valve rod 9 is loaded by a spring 12 in the closing direction. In order to open the exhaust gas recirculation valve even when the valve disc and are stuck To ensure valve seat, the valve works as described below.
- valve plate (s) 8 shows a further embodiment of the exhaust gas recirculation valve according to the invention.
- the "cracking" of the valve plate (s) 8 occurs a separate plate magnet armature 6 by a spring 7 from the head 13 and one Plate magnet 15 is spaced.
- the proportional delivery of the head 13 and thus the proportional opening of the or the valve plate 8 is by a proportional magnet armature 16, which is by a spring 17th is biased against the valve head 13 causes.
- This embodiment offers the advantage that the plate magnet has high positioning forces the valve opens over short distances, then the proportional magnet armature 16 the proportional Allow delivery.
- the proportion anchor 16 is therefore not high sudden forces are stressed, which benefits the service life and the delivery accuracy comes.
- an exhaust gas recirculation valve with position feedback the thickness of the deposits on the valve plate and valve seat in an adaptive process step is stored in the computer from time to time, so that the metering accuracy through appropriate consideration in the valve lift.
- the drive head 5 as Known pneumatic actuator can be formed by a membrane in two Chambers is divided and an attachment attached to the membrane plates the effect of Anchor 6 takes over while storing the kinetic energy during acceleration and strikes the head 13 of the valve rod 9 as soon as the one controlled by a valve Working chamber is subjected to negative pressure.
- the membrane acts under the effect of arranged in the working chamber spring 7 back to the starting position and the The process can be repeated.
- the working chamber must be on the valve rod 9 facing side of the drive head 5 and the atmospheric ventilated Opposite chamber.
- this can Breakaway process described after establishing a corresponding intake manifold vacuum after the first revolutions after starting the internal combustion engine.
- the negative pressure can, however, also by a mechanically or electromotively driven vacuum pump be generated.
- the exhaust gas recirculation valve works, be it electromagnetically or pneumatically driven, like one from the prior art Technology known valve.
- the drive head is controlled by the computer that the freewheel 'X' run against the force of the spring 7 at the usual actuating speed is so that there is no blow and after reaching the one shown in Fig. 2 Position in which the attachment 14 is in operative connection with the head 13 of the valve rod 9 the actual adjustment process begins, d. H. the exhaust gas recirculation valve 1 will be opened.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Valve Device For Special Equipments (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Description
z. B. beim nächtlichen Abstellen des Fahrzeugs, zu Verklebungen zwischen Ventilsitz und -teller, die die maximale Öffnungskraft des elektromagnetischen Stellmotors bzw. der pneumatischen Membrandose um das Mehrfache übersteigen.
Das Ventil lässt sich nicht mehr öffnen, die Funktion ist vollständig gestört, was die Umwelt belastet und einen Werkstattbesuch erforderlich macht.
- Fig. 1
- ein Abgasrückführventil im Ruhezustand,
- Fig. 2
- ein Abgasrückführventil im Anschlagzustand,
- Fig. 3
- ein Abgasrückführventil im geöffneten Zustand,
- Fig. 4
- eine weitere Ausführungsform des erfindungsgemässen Abgasrückführventils.
Claims (9)
- Abgasrückführventil mit mindestens einem mit einer Ventilstange (9) verbundenen Ventilteller, (8) der mit einem Ventilsitz zusammenwirkt und die Verbindung des Abgaskanals zur Ansaugleitung einer Brennkraftmaschine beherrscht, wobei am freien Ende der Ventilstange (9) ein Kopf angeordnet ist und ein Betriebsparameter verarbeitender Rechner in Abhängigkeit vom Betriebszustand der Brennkraftmaschine die öffnungsstellung des Abgasrückführventils mittels eines gegen die Kraft einer Feder wirkenden Antriebes bestimmt, dadurch gekennzeichnet, dass ein Bauteil (6) vorgesehen ist, in dem kinetische Energie speicherbar ist, die nach Durchlaufen eines Freiwegs 'X' auf den einem Kopf (13) am freien Ende der Ventilstange (9) übertragbar ist.
- Abgasrückführventil nach Anspruch 1, dadurch gekennzeichnet, dass das Bauteil (6) als Anker eines Elektromagneten ausgebildet ist, der im Ruhezustand mittels einer Feder (7) zum Kopf (13) der Ventilstange (9) beabstandet ist.
- Abgasrückführventil nach Anspruch 2, dadurch gekennzeichnet, dass der Anker (6) als Proportionalanker ausgeführt ist, der im Anschlagzustand eine proportionale Zustellung des Kopfes (13) ermöglicht.
- Abgasrückführventil nach Anspruch 2, dadurch gekennzeichnet, dass der Anker (6) als Plattenmagnetanker ausgeführt ist, dem ein Plattenmagnet (15) zugeordnet ist, wobei ein Proportionalmagnetanker (16) gegen den Kopf (13) durch eine Feder (17) vorgespannt ist.
- Abgasrückführventil nach Anspruch 1, dadurch gekennzeichnet, dass das Bauteil (6) bei einem pneumatischen Antrieb (5) als an einer zwei Membrankammern trennenden Membran angeordnete Membranteller ausgebildet ist, die mittels einer Feder (7) zum Kopf (13) der Ventilstange (9) beabstandet ist.
- Abgasrückführventil nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Position des Bauteils (6) mittels einer Lagerückmeldung (10) an den Rechner gegeben wird.
- Verfahren zum Betreiben eines Abgasrückführventils nach mindestens einem der Ansprüche 1 - 6, dadurch gekennzeichnet, dass nach Start der Brennkraftmaschine ein oder mehrere Abläufe des Aufladens des Bauteils (6) mit kinetischer Energie und des Entladens durch einen Stoss erfolgen.
- Verfahren zum Betreiben eines Abgasrückführventils nach Anspruch 7, dadurch gekennzeichnet, dass nach Start der Brennkraftmaschine und einem Ventilöffnungsbefehl durch einen Soll/Ist-Vergleich der Position des Proportionalmagnetankers (6, 16) bei Feststellung einer Ventilverklebung ein oder mehrere Abläufe des Aufladens des Bauteils (6) mit kinetischer Energie und des Entladens durch einen Stoss initiiert werden.
- Verfahren zum Betreiben eines Abgasrückführventils nach Anspruch 8, dadurch gekennzeichnet, dass bei einem Abgasrückführventil mit Lagerückmeldung die Stärke der Ablagerungen am Ventilteller (8) und Ventilsitz (11) in einem adaptiven Verfahrenschritt im Rechner abgelegt werden.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19801384 | 1998-01-16 | ||
DE19801384 | 1998-01-16 | ||
DE19848699A DE19848699A1 (de) | 1998-01-16 | 1998-10-13 | Abgasrückführventil |
DE19848699 | 1998-10-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0930428A2 EP0930428A2 (de) | 1999-07-21 |
EP0930428A3 EP0930428A3 (de) | 1999-12-22 |
EP0930428B1 true EP0930428B1 (de) | 2003-09-17 |
Family
ID=26043131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98120712A Expired - Lifetime EP0930428B1 (de) | 1998-01-16 | 1998-10-31 | Abgasrückführventil |
Country Status (4)
Country | Link |
---|---|
US (1) | US6213446B1 (de) |
EP (1) | EP0930428B1 (de) |
AT (1) | ATE250182T1 (de) |
ES (1) | ES2202716T3 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10044898A1 (de) * | 2000-09-12 | 2002-04-25 | Berger Lahr Gmbh & Co Kg | Ventil |
LU90647B1 (en) * | 2000-10-04 | 2002-04-05 | Delphi Tech Inc | Linear solenoid actuator and exhaust gas recirculation valve including such an actuator |
ATE260410T1 (de) * | 2000-10-17 | 2004-03-15 | Siebe Automotive Deutschland Gmbh | Abgasrückführventil und verfahren zum öffnen eines abgasrückführventils |
DE10125094A1 (de) * | 2001-05-23 | 2002-11-28 | Siemens Ag | Abgasrückführeinrichtung |
FR2827011B1 (fr) * | 2001-07-05 | 2003-10-03 | Renault | Vanne de commande pour un circuit de recirculation de gaz d'echappement d'un moteur a combustion interne |
CN101171416A (zh) * | 2005-03-08 | 2008-04-30 | 博格华纳公司 | 具有休止位置的egr阀 |
DE102005061548B4 (de) * | 2005-12-22 | 2007-12-06 | Pierburg Gmbh | Verfahren zum Betreiben eines Abgasmassenstromsensors |
US20110108013A1 (en) * | 2009-11-09 | 2011-05-12 | International Engine Intellectual Property Company, Llc | Exhaust gas recirculation valve with bypass capability and method |
US9541040B2 (en) * | 2014-09-05 | 2017-01-10 | General Electric Company | Method and systems for exhaust gas recirculation system diagnosis |
CN106640290A (zh) * | 2016-11-07 | 2017-05-10 | 山东大学 | 一种尿素箱加热水阀控制方法及系统 |
DE102020206678A1 (de) * | 2020-05-28 | 2021-12-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Absperrventil für einen Druckgasbehälter, Druckgasbehälter |
CN115324755B (zh) * | 2022-10-14 | 2023-03-24 | 潍柴动力股份有限公司 | 一种阀门卡滞的处理方法及装置、电子设备、存储介质 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2324642A (en) * | 1940-05-03 | 1943-07-20 | Honeywell Regulator Co | Electromagnetic valve operator |
US2458123A (en) * | 1946-07-13 | 1949-01-04 | Phillips Control Corp | Solenoid actuated valve |
US2612188A (en) * | 1947-04-11 | 1952-09-30 | Mcquay Norris Mfg Co | Solenoid-operated gas valve |
US2625178A (en) * | 1947-08-07 | 1953-01-13 | Westinghouse Air Brake Co | Quick-acting valve device |
US2651744A (en) * | 1949-02-02 | 1953-09-08 | Mcquaynorris Mfg Company | Control device |
US2741451A (en) * | 1952-03-04 | 1956-04-10 | Arthur A Welborn | Fluid flow control devices |
US3722623A (en) * | 1971-05-25 | 1973-03-27 | Ram Enterprises Inc | Preliminary lubrication device |
US4304258A (en) * | 1979-10-15 | 1981-12-08 | The Garrett Corporation | Solenoid valve assembly |
IT1146659B (it) * | 1981-12-17 | 1986-11-12 | Edi System Srl | Valvola direzionale a spillo a due vie,ad azionamento elettromagnetico normalmente chiusa |
JPS60121374A (ja) * | 1983-12-05 | 1985-06-28 | Fujitsu Ltd | 高速バルブ |
US4662604A (en) * | 1985-05-30 | 1987-05-05 | Canadian Fram Limited | Force balanced EGR valve with position feedback |
US4705070A (en) * | 1986-02-04 | 1987-11-10 | Eidsmore Paul G | Isolation on/off valve |
DE3826978A1 (de) * | 1988-08-09 | 1990-02-15 | Meyer Hans Wilhelm | Elektromagnetisch betaetigbare stellvorrichtung |
DE4338192C2 (de) | 1993-11-09 | 1998-03-19 | Pierburg Ag | Elektromagnetisches Steuerventil für Abgasrückführung |
US5494255A (en) * | 1994-01-12 | 1996-02-27 | Robertshaw Controls Company | Solenoid activated exhaust gas recirculation valve |
US5435519A (en) * | 1994-03-31 | 1995-07-25 | Stemens Electric Limited | EGR system having fast-acting EGR valve |
JP3365197B2 (ja) * | 1996-03-21 | 2003-01-08 | 日産自動車株式会社 | 内燃機関のegr制御装置 |
US5666932A (en) * | 1996-04-22 | 1997-09-16 | General Motors Corporation | EGR valve maintenance method |
-
1998
- 1998-10-31 AT AT98120712T patent/ATE250182T1/de not_active IP Right Cessation
- 1998-10-31 ES ES98120712T patent/ES2202716T3/es not_active Expired - Lifetime
- 1998-10-31 EP EP98120712A patent/EP0930428B1/de not_active Expired - Lifetime
-
1999
- 1999-01-19 US US09/233,594 patent/US6213446B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE250182T1 (de) | 2003-10-15 |
EP0930428A2 (de) | 1999-07-21 |
ES2202716T3 (es) | 2004-04-01 |
US6213446B1 (en) | 2001-04-10 |
EP0930428A3 (de) | 1999-12-22 |
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