EP0952331B1 - Abgasrückführventil - Google Patents
Abgasrückführventil Download PDFInfo
- Publication number
- EP0952331B1 EP0952331B1 EP99105366A EP99105366A EP0952331B1 EP 0952331 B1 EP0952331 B1 EP 0952331B1 EP 99105366 A EP99105366 A EP 99105366A EP 99105366 A EP99105366 A EP 99105366A EP 0952331 B1 EP0952331 B1 EP 0952331B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- exhaust gas
- gas recirculation
- head
- recirculation valve
- 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
-
- 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
- F02M26/72—Housings
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 coil is energized a magnetic field builds up and moves the armature, which in turn hits a closing spring the valve opens via a valve rod. With the pneumatically operated exhaust gas recirculation valve is connected to the valve stem by applying a vacuum Diaphragm opened the valve against a spring.
- 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 a position control via a potentiometer z. B. 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.
- 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, that the exhaust gas inlet 2 is arranged in a chamber separate from the outlets 3. at an electromagnetic exhaust gas recirculation valve, a coil 4 is arranged in the drive head 5. This cooperates with an anchor 6, which is in operative connection with the Valve plate 8 carrying valve rod 9 via the respective locking elements 18, 21, 23, 24 stands.
- 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. To open the exhaust gas recirculation valve even when the valve disc is stuck and ensure valve seat, the valve operates as described below.
- the plunger 15 has a reduced cross section 16 in the embodiment according to FIG. 1 in which radially at least one element 18 loaded by a spring 17, which is also known as Ball can be executed, engages.
- the head 19 of the head directed against the Ram 15 is for reduced cross section 16 z.
- B is conical and represents the element 18 is a run-up track. To overcome the forces of the spring 7, 17 must the magnet 4 generate a correspondingly high force.
- valve head 13 follows through the non-positive connection by means of a spring 17 and element 18 the plunger 15 or the armature 6 depending on the current applied the solenoid 4.
- the locking position is once by a Permanent magnet 21, which acts on a collar 22 of the plunger 15, the other by a generated at a predetermined force yielding plate spring 23 or a bow spring 24.
- the plate spring 23 and the residual force of the magnet 21 simultaneously meet the Function of the return spring 7.
- 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 acts on the head 19 of the plunger 15 as soon as it is controlled by a valve Working chamber is subjected to negative pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Check Valves (AREA)
- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
Description
- Fig. 1
- ein Abgasrückführventil nach der Erfindung,
- Fig. 2, 3 und 4
- Varianten der Raststellung.
Claims (5)
- Abgasrückführventil (1) mit mindestens einem mit einer Ventilstange (9) verbundenen Ventilteller (8), der mit einem Ventilsitz (11) zusammenwirkt und die Verbindung des Abgaskanals zur Ansaugleitung einer Brennkraftmaschine beherrscht und ein Betriebsparameter verarbeitender Rechner in Abhängigkeit vom Betriebszustand der Brennkraftmaschine die Öffnungsstellung des Abgasrückführventils (1) mittels eines gegen die Kraft einer Feder (12) wirkenden Antriebes bestimmt, dadurch gekennzeichnet, daß ein Bauteil (6) vorgesehen ist, das nach Überwindung einer einen zwischengeschalteten Stößel (15) in einer Raststellung haltenden Kraft nach Durchlaufen eines Freiwegs X eine so hohe kinetische Energie aufbaut, daß das Bauteil (6) mit einem Kopf (13) am freien Ende der Ventilstange (9) in Wirkverbindung bringbar ist.
- Abgasrückführventil nach Anspruch 1, dadurch gekennzeichnet, daß das Bauteil (6) mit einem Ansatz (14) auf den Kopf (19) eines zwischen Ansatz (14) und Kopf (13) der Ventilstange (9) angeordneten Stößels (15) einwirkt.
- Abgasrückführventil nach Anspruch 2, dadurch gekennzeichnet, daß der Kopf (19) des Stößels (15) konisch in einen verminderten Querschnitt (16) übergeht, in dessen Bereich mindestens ein radial von einer Feder (17) belastetes Element (18) angeordnet ist.
- Abgasrückführventil nach Anspruch 2, dadurch gekennzeichnet, daß der Stößel (15) einen Bund (22) aufweist, der von einem Dauermagneten (21) angezogen wird, der im Kopf (13) der Ventilstange (9) so angeordnet ist, daß in angezogenem Zustand ein Spalt X in Öffnungsrichtung des Ventils gegenüber der Ventilstange (9) verbleibt.
- Abgasrückführventil nach Anspruch 2, dadurch gekennzeichnet, daß der Stößel (15) durch eine, einen Druckpunkt aufweisende Feder (23) in Richtung des Ansatzes (14) im Kopf (13) der Ventilstange (9) vorgespannt angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19817740 | 1998-04-21 | ||
DE19817740A DE19817740A1 (de) | 1998-04-21 | 1998-04-21 | Abgasrückführventil |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0952331A2 EP0952331A2 (de) | 1999-10-27 |
EP0952331A3 EP0952331A3 (de) | 2000-07-05 |
EP0952331B1 true EP0952331B1 (de) | 2003-07-02 |
Family
ID=7865292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99105366A Expired - Lifetime EP0952331B1 (de) | 1998-04-21 | 1999-03-16 | Abgasrückführventil |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0952331B1 (de) |
DE (2) | DE19817740A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU90665B1 (en) * | 2000-10-25 | 2002-04-26 | Delphi Tech Inc | Exhaust gas recirculation valve for an internal combustion engine |
DE10143307A1 (de) * | 2001-09-04 | 2003-03-20 | Pierburg Gmbh | Elektromagnetischer Stellantrieb |
EP3627016A1 (de) * | 2018-09-19 | 2020-03-25 | Continental Automotive GmbH | Ventil |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5762954A (en) * | 1980-09-30 | 1982-04-16 | Aisin Seiki Co Ltd | Egr control valve apparatus and its control method |
DE4332513A1 (de) * | 1993-09-24 | 1995-03-30 | Pierburg Gmbh | Steuerventil für Abgasrückführung |
DE4338192C2 (de) | 1993-11-09 | 1998-03-19 | Pierburg Ag | Elektromagnetisches Steuerventil für Abgasrückführung |
JP3479353B2 (ja) * | 1994-10-17 | 2003-12-15 | 株式会社ケーヒン | 排気ガス再循環バルブ |
-
1998
- 1998-04-21 DE DE19817740A patent/DE19817740A1/de not_active Withdrawn
-
1999
- 1999-03-16 DE DE59906150T patent/DE59906150D1/de not_active Expired - Lifetime
- 1999-03-16 EP EP99105366A patent/EP0952331B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0952331A3 (de) | 2000-07-05 |
DE59906150D1 (de) | 2003-08-07 |
DE19817740A1 (de) | 1999-10-28 |
EP0952331A2 (de) | 1999-10-27 |
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