EP0964147A2 - Valve de recirculation de gaz d'échappement pour moteurs à combustion - Google Patents

Valve de recirculation de gaz d'échappement pour moteurs à combustion Download PDF

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Publication number
EP0964147A2
EP0964147A2 EP99110259A EP99110259A EP0964147A2 EP 0964147 A2 EP0964147 A2 EP 0964147A2 EP 99110259 A EP99110259 A EP 99110259A EP 99110259 A EP99110259 A EP 99110259A EP 0964147 A2 EP0964147 A2 EP 0964147A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
valve
valve according
valve seat
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
EP99110259A
Other languages
German (de)
English (en)
Other versions
EP0964147B1 (fr
EP0964147A3 (fr
Inventor
Frank Zimmermann
Thomas Peuker
Andreas Kaiser
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
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Application filed by Gustav Wahler GmbH and Co KG filed Critical Gustav Wahler GmbH and Co KG
Publication of EP0964147A2 publication Critical patent/EP0964147A2/fr
Publication of EP0964147A3 publication Critical patent/EP0964147A3/fr
Application granted granted Critical
Publication of EP0964147B1 publication Critical patent/EP0964147B1/fr
Anticipated expiration legal-status Critical
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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
    • F02M26/68—Closing members; Valve seats; Flow passages
    • 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

Definitions

  • the invention relates to an exhaust gas recirculation valve for internal combustion engines with the features in the preamble of claim 1.
  • Exhaust gas recirculation valves of this type for internal combustion engines are known from DE 196 07 810 A1, in which the valve member from below to close the valve opening is placed against the valve seat surface.
  • the valve member usually sits at the end of an actuator in the form of a Rod, a plunger, a shaft or the like, on the an actuator, preferably e.g. an electric actuator, for actuating the valve member in the opening direction or closing direction attacks.
  • the electrical Actuator can be an electric motor, a stepper motor, an electric rotary magnet or the like. electromagnetic Turntable be provided.
  • valve seat surface is than frustum-shaped upwards tapered sloping surface in a plate-shaped upper part formed of the housing part.
  • the valve member is as flat plate designed, of which the valve seat assigned ring area also as about conical tapered inclined surface is. In the closed position of the valve valve member-side ring surface and the valve seat surface of the valve passage on each other.
  • the invention has for its object an exhaust gas recirculation valve of the type mentioned at the beginning that a flawless opening or closing function guaranteed between the valve member and the valve seat is.
  • the at least one top recording on Valve member which is provided recessed there, forms a Reservoir for any liquid, condensate and / or particles contained in this at least one receptacle get in, e.g. can flow in, so that these thereby in a particularly simple manner from the ring surface of the valve member and / or the valve seat surface of the Housing part are kept away.
  • Fig. 1 is only schematically the one of interest here Part of an otherwise at least essentially known Exhaust gas recirculation valve 10 shown for exhaust gas recirculation determined in internal combustion engines and e.g. into an intake manifold the internal combustion engine is installed. It points a lower housing part 11, on which no further Exhaust gas recirculation line shown, illustrated by the Arrow 12 is fed.
  • the housing part 11 contains one Valve passage 13 with an annular valve seat surface 14, which cooperates with an associated valve member 15, the one of the valve seat surface 14 associated ring surface 16 having.
  • the valve member 15 is in a conventional manner as not shown, at the lower end of an actuator in the form of a rod, a plunger, a shaft or the like attached that in an appropriate housing is guided coaxially to the longitudinal center axis 9, usually an actuator on this actuator attacks, e.g. in the form of an electric actuator, e.g. from an electric motor or stepper motor or rotary magnets or the like. can exist.
  • the annular surface 16 of the valve member 15 is axial on one protruding collar 40 of the valve member 15 is formed, which is arranged on the top of the valve member 15.
  • valve seat surface 14 is on the lower side of the Housing part 11 arranged, the bottom and in Direction of valve seat surface 14 in the direction of arrow 12 the exhaust gas can be supplied.
  • the valve member 15 is on the Bottom of the housing part 11 arranged and from below against the valve seat surface 14 to bring about the in Fig. 1 shown closed position can be applied.
  • valve seat surface 14 on the underside is an inclined surface 44 formed, which face away from the valve member 15 Axial direction tapered approximately frustoconical.
  • the ring surface 16 formed on the upper side of the ring collar 40 of the valve member 15 is also an inclined surface 46 formed in the valve seat 14 facing Axial direction tapered approximately frustoconical.
  • the taper angle of the inclined surfaces 44 and 46 is according to FIG. 1 and 2 are of equal size and are of the order of magnitude about 120 °.
  • FIG. 2 reveals, closes the annular surface 16, in particular in the training as an inclined surface 46, the collar 40 with their outer diameter and also their inner diameter each essentially with the corresponding outer diameter or inner diameter of the inclined surface 44 Valve seat 14 from.
  • the projecting collar 40 is radially outside of one to the longitudinal central axis 9 approximately coaxial outer cylinder surface 48 limited.
  • valve seat surface 14 designed as an inclined surface 44 is approximately radially inward from one to the longitudinal central axis 9 limited coaxial inner cylinder surface 47 which the Valve passage 13 surrounds and defines.
  • valve seat surface 14 of the housing part 11 is on one relatively thin in cross section, approximately disc-shaped Head region 49 of the housing part 11 is formed.
  • valve seat surface 14 designed as an inclined surface 44 adjoins an annular surface 45 radially on the outside lies within a radial plane that is approximately rectangular is aligned with the longitudinal central axis 9.
  • the top of the Head area 49 is through a to this annular surface 45th approximately parallel head surface 50 limited.
  • the valve body 15 has on the valve seat surface 14 facing top 51 one or more recessed open, upwardly open receptacles 52 as collecting spaces, in which there is liquid, condensate and / or particles can collect, especially when the exhaust gas recirculation valve cools 10 from the exhaust gas, in particular from diesel exhaust gas, can fail.
  • the at least one receptacle 52 takes such particles, liquids or the like. on, so that these from the inclined surfaces interacting 44 and 46 should be kept as far as possible.
  • FIGS. 1 and 2 has the valve body 15 on the upper side as recessed Receptacle 52 at least one recessed annular groove, which e.g. has a width of about 2 mm to 3 mm and the radially outside through the axially projecting annular collar 40 is limited.
  • Radially inside follows the least a top-side receptacle 52, in particular an annular groove, one for Longitudinal central axis 9 towards conical surface 53, the approximately frustoconical in the direction of the valve seat surface 14 tapered and axially over the collar 40 and the Ring surface 16 also protrudes upwards.
  • the axial protrusion dimension the conical surface 53 lies e.g. in the order of magnitude of 2 mm.
  • This configuration of the exhaust gas recirculation valve 10 according to 1 and 2 is a flawless with simple means Closing function or opening function between the valve seat surface 14 and the valve member 15, wherein an accumulation of particles, liquid, condensate or the like, which fail during cooling from the exhaust gas, in Area of the inclined surfaces 44 and 46 acting with one another as far as possible is excluded.
  • valve seat surface 14 is designed as a flat surface, which are within a to the longitudinal central axis of the valve passage 13 extends approximately rectangular radial plane.
  • the cutting edge 60 is radially outward from that to the longitudinal central axis the valve passage 13 approximately coaxial outer Cylinder surface 48 and radially inward from an inner bevel surface 61 defined, which forms the cutting edge 60 in the ring surface 16, which presents itself as a ring line to meet.
  • the inner inclined surface 61 tapers in the Axial direction approximately frustoconical, that of the flat valve seat surface 14 is turned away. Also in this embodiment has the valve member 15 as in the first embodiment on the top at least one recessed, upward open image corresponding to the image 52 on.
  • the cutting edge 60 is formed in the region of the valve seat surface 14, the annular member 16 on the valve member side then e.g. can be designed as a flat ring surface.
  • the cutting edge is 60 radially inward from one to the longitudinal central axis of the valve passage 13 approximately coaxial inner cylinder surface 62 and defined radially on the outside by an outer inclined surface 63, which meet to form the cutting edge 60, the Ring surface 16 in turn represents a circle.
  • the outer bevel 63 tapers in the shape of a truncated cone Axial direction, which faces the flat valve seat surface 14 is. 4 are the same Advantages as achieved by that in Fig. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
EP99110259A 1998-06-09 1999-05-27 Valve de recirculation de gaz d'échappement pour moteurs à combustion Expired - Lifetime EP0964147B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19825656A DE19825656A1 (de) 1998-06-09 1998-06-09 Abgasrückführventil für Brennkraftmaschinen
DE19825656 1998-06-09

Publications (3)

Publication Number Publication Date
EP0964147A2 true EP0964147A2 (fr) 1999-12-15
EP0964147A3 EP0964147A3 (fr) 2000-10-18
EP0964147B1 EP0964147B1 (fr) 2003-11-12

Family

ID=7870355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99110259A Expired - Lifetime EP0964147B1 (fr) 1998-06-09 1999-05-27 Valve de recirculation de gaz d'échappement pour moteurs à combustion

Country Status (2)

Country Link
EP (1) EP0964147B1 (fr)
DE (2) DE19825656A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1186762A3 (fr) * 2000-09-09 2003-03-12 Gustav Wahler GmbH u. Co.KG Dispositif de commande avec soupape de commande pour contrôler une substance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607810A1 (de) 1996-03-01 1997-09-04 Bosch Gmbh Robert Abgasrückführventil

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03267563A (ja) * 1990-03-16 1991-11-28 Taiho Kogyo Co Ltd 排気ガス再循環装置
DE4009923C2 (de) * 1990-03-28 1995-11-02 Fev Motorentech Gmbh & Co Kg Ventil zum Dosieren des Abgasrückführstromes bei Brennkraftmaschinen
JPH08135520A (ja) * 1994-11-14 1996-05-28 Fuji Oozx Inc 内燃機関用排気ガス還流制御弁装置
DE19539921C1 (de) * 1995-10-26 1997-02-27 Ranco Inc Ventil
JPH09264203A (ja) * 1996-03-28 1997-10-07 Aisan Ind Co Ltd 排気ガス還流装置
DE19701239A1 (de) * 1997-01-16 1998-07-23 Bosch Gmbh Robert Abgasrückführventil
DE19711199A1 (de) * 1997-03-19 1998-09-24 Wahler Gmbh & Co Gustav Abgasrückführventil für eine Brennkraftmaschine
JP3940862B2 (ja) * 1997-06-25 2007-07-04 株式会社デンソー 排気ガス還流制御弁

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607810A1 (de) 1996-03-01 1997-09-04 Bosch Gmbh Robert Abgasrückführventil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1186762A3 (fr) * 2000-09-09 2003-03-12 Gustav Wahler GmbH u. Co.KG Dispositif de commande avec soupape de commande pour contrôler une substance

Also Published As

Publication number Publication date
DE59907686D1 (de) 2003-12-18
EP0964147B1 (fr) 2003-11-12
EP0964147A3 (fr) 2000-10-18
DE19825656A1 (de) 1999-12-16

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