EP0930428B1 - Soupape de recirculation de gaz d'échappement - Google Patents

Soupape de recirculation de gaz d'échappement Download PDF

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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
Application number
EP98120712A
Other languages
German (de)
English (en)
Other versions
EP0930428A2 (fr
EP0930428A3 (fr
Inventor
Heinrich Dismon
Dieter Thönnessen
Armin Schürfeld
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.)
Pierburg GmbH
Original Assignee
Pierburg 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
Priority claimed from DE19848699A external-priority patent/DE19848699A1/de
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0930428A2 publication Critical patent/EP0930428A2/fr
Publication of EP0930428A3 publication Critical patent/EP0930428A3/fr
Application granted granted Critical
Publication of EP0930428B1 publication Critical patent/EP0930428B1/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
    • 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.

Claims (9)

  1. Soupape de recyclage des gaz d'échappement comportant au moins un plateau de soupape (8) relié à une queue de soupape (9), qui coopère avec un siège de soupape et contrôle la liaison du canal d'échappement avec la tubulure d'admission d'un moteur thermique, une tête étant disposée à l'extrémité libre de la queue de soupape (9) et un calculateur traitant des paramètres de service déterminant en fonction de l'état de service du moteur thermique la position d'ouverture de la soupape de recyclage des gaz d'échappement, au moyen d'un entraínement agissant contre la force d'un ressort, caractérisée en ce qu'un composant (6) est prévu dans lequel peut être accumulée de l'énergie cinétique qui, après qu'a été parcourue une course libre 'X', est transmissible à la tête (13) à l'extrémité libre de la queue de soupape (9).
  2. Soupape de recyclage des gaz d'échappement selon la revendication 1, caractérisée en ce que le composant (6) est réalisé en tant qu'induit d'un électro-aimant qui, au repos, est écarté par rapport à la tête (13) de la queue de soupape (9) au moyen d'un ressort (7).
  3. Soupape de recyclage des gaz d'échappement selon la revendication 2, caractérisée en ce que l'induit (6) est réalisé en tant qu'induit proportionnel qui en butée permet un positionnement proportionnel de la tête (13).
  4. Soupape de recyclage des gaz d'échappement selon la revendication 2, caractérisée en ce que l'induit (6) est réalisé en tant qu'induit à plaque magnétique, auquel est associée une plaque magnétique (15), un induit à aimant proportionnel (16) étant précontraint contre la tête (13) par un ressort (17).
  5. Soupape de recyclage des gaz d'échappement selon la revendication 1, caractérisée en ce que le composant (6), dans le cas d'un entraínement (5) pneumatique, est réalisé en tant que plateau de membrane disposé sur une membrane séparant deux chambres à membrane, qui au moyen d'un ressort (7) sont écartées par rapport à la tête (13) de la queue de soupape (9).
  6. Soupape de recyclage des gaz d'échappement selon l'une des revendications précédentes, caractérisée en ce que la position du composant (6) est indiquée au calculateur au moyen d'un message de retour de position (10).
  7. Procédé pour actionner une soupape de recyclage de gaz d'échappement selon au moins l'une des revendications 1 à 6, caractérisée en ce qu'après le démarrage du moteur thermique s'opèrent un ou plusieurs cycles de charge du composant (6) en énergie cinétique et de décharge par un choc.
  8. Procédé pour actionner une soupape de recyclage de gaz d'échappement selon la revendication 7, caractérisée en ce qu'après le démarrage du moteur thermique et un ordre d'ouverture de soupape par une comparaison consigne/réel de la position de l'induit d'aimant proportionnel (6, 16) sont amorcés un ou plusieurs cycles de charge du composant (6) en énergie cinétique et de décharge par un choc, en cas de constatation d'une adhérence de soupape.
  9. Procédé pour actionner une soupape de recyclage de gaz d'échappement selon la revendication 8, caractérisée en ce que dans le cas d'une soupape de recyclage avec message de retour de position, l'épaisseur des dépôts sur le plateau de soupape (8) et le siège de soupape (11) est stockée dans un calculateur, dans une étape de procédé adaptative.
EP98120712A 1998-01-16 1998-10-31 Soupape de recirculation de gaz d'échappement Expired - Lifetime EP0930428B1 (fr)

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 (fr) 1999-07-21
EP0930428A3 EP0930428A3 (fr) 1999-12-22
EP0930428B1 true EP0930428B1 (fr) 2003-09-17

Family

ID=26043131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120712A Expired - Lifetime EP0930428B1 (fr) 1998-01-16 1998-10-31 Soupape de recirculation de gaz d'échappement

Country Status (4)

Country Link
US (1) US6213446B1 (fr)
EP (1) EP0930428B1 (fr)
AT (1) ATE250182T1 (fr)
ES (1) ES2202716T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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
DE50005435D1 (de) * 2000-10-17 2004-04-01 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
WO2006096750A1 (fr) * 2005-03-08 2006-09-14 Borgwarner Inc. Soupape rge presentant une position de repos
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

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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

Also Published As

Publication number Publication date
US6213446B1 (en) 2001-04-10
ES2202716T3 (es) 2004-04-01
EP0930428A2 (fr) 1999-07-21
ATE250182T1 (de) 2003-10-15
EP0930428A3 (fr) 1999-12-22

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