EP0869274A1 - Soupape de mélange, notamment une soupape de recirculation de gaz d' échappement pour un moteur à combustion interne - Google Patents

Soupape de mélange, notamment une soupape de recirculation de gaz d' échappement pour un moteur à combustion interne Download PDF

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Publication number
EP0869274A1
EP0869274A1 EP98105995A EP98105995A EP0869274A1 EP 0869274 A1 EP0869274 A1 EP 0869274A1 EP 98105995 A EP98105995 A EP 98105995A EP 98105995 A EP98105995 A EP 98105995A EP 0869274 A1 EP0869274 A1 EP 0869274A1
Authority
EP
European Patent Office
Prior art keywords
flow
sheet metal
mixing valve
metal part
plastic housing
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
EP98105995A
Other languages
German (de)
English (en)
Other versions
EP0869274B1 (fr
Inventor
Christian Lorenz
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0869274A1 publication Critical patent/EP0869274A1/fr
Application granted granted Critical
Publication of EP0869274B1 publication Critical patent/EP0869274B1/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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum 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
    • F02M26/18—Thermal insulation or heat protection
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/68—Closing members; Valve seats; Flow passages

Definitions

  • the invention is based on a proportioning valve according to the Genus of claim 1.
  • a proportioning valve goes from DE-OS 42 27 739, in which a Plastic housing for guiding a cold fluid flow and a metallic opening into the plastic housing Connection piece, which forms a valve closing member, is provided are.
  • the valve closing member points in the direction of flow Heat dissipation fins that flow from the hot fluid to the Dissipate the heat from the connector without removing the To heat the plastic housing inadmissibly.
  • the admixing valve according to the invention with the characteristic Features of claim 1 has the advantage that it is simple to manufacture.
  • the Flow areas form the smallest possible Flow resistance and prevent the hot fluid flow the plastic housing is heated to an unacceptable extent. Training the Flow areas also ensure that the inner surface of the plastic housing a cooling Current that slowly forms with the hot Fluid flow mixed.
  • a Cost-effective execution in terms of production technology consists in that the connector is formed from sheet metal. Is expedient in the process of forming the connector from two sheet metal parts, with an outer sheet metal part the connection with the Plastic case is made and on an inner Sheet metal part, the fluid guide sheets and the valve seat are trained.
  • FIG. 1 shows a cross section through a Exhaust gas recirculation valve of an internal combustion engine
  • Figure 2 a Top view of the exhaust gas recirculation valve according to FIG. 1 in Flow direction of the cold fluid flow
  • Figure 3 a Part of the exhaust gas recirculation valve with a partial cut
  • Figure 4 is a sectional view of the connector according to Figure 3 in a 90 ° rotated view.
  • FIGS. 1 and 2 it is an exhaust gas recirculation valve Internal combustion engine.
  • an exhaust gas recirculation valve one Internal combustion engine is just a preferred application for the present invention. It is quite conceivable, the admixing valve according to the invention in others Use tasks where a hot fluid flow is one cold fluid flow is added.
  • the gas recirculation valve serves to remove part of the exhaust gas from the internal combustion engine to branch off and the intake air for combustion to mix.
  • the exhaust gas recirculation valve has a plastic housing 10, a Valve closing member 11 and a metallic connector 12.
  • the plastic housing 10 is with a flow channel 13 and one arranged transversely to the flow channel 13 Connection piece 17 executed, in the flow channel 13th a cold fluid flow 14 (intake air) in the direction of the arrow to be led.
  • the cold fluid stream 14 is about Connector 12 a hot fluid flow 15 corresponding to the indicated arrow direction metered added.
  • the dosage takes place via the valve closing member 11.
  • Das Connector 12 is to an exhaust pipe, not shown connected to the internal combustion engine.
  • connection side refers to the Connection of the exhaust gas recirculation valve 10 to the hot exhaust pipe the internal combustion engine.
  • housing side the becomes Plastic housing 10 facing section of the connector Designated 12.
  • connection-side pipe section 21 is a Inlet opening 23 and at the housing end of the housing-side tube section 22 has an outlet opening 24 through which the hot fluid stream 15 flows.
  • the outlet opening 24 forms on the housing-side tube section 22 a sealing seat 25 for a valve disk 26.
  • a valve plate 26 is part of the valve closing member 11 and is connected to a valve stem 27 which in a Plastic housing 10 mounted slide bush 29 is guided.
  • the valve stem 27 stands with an actuating device 30 in connection, for example, by application actuated the valve closing member 11 with negative pressure.
  • connection flange 32 At the end provided with the inlet opening 23 pipe section 21 on the connection side, a connection flange 32, the fasteners not shown on Exhaust pipe is attached.
  • a connecting flange is formed on the connector 12.
  • the connecting flange 34 has an inner ring piece 36 and an outer ring piece 37, the inner ring piece 36 with an inner bend 38 and the outer ring piece 37 is carried out with an outer bend 39 ( Figure 3 and 4).
  • the outer bend 39 engages behind Form of a flange 48 one at the connecting piece 17th trained bead 18 non-positively and positively. Which radially extending connecting flange 34 causes a thermal decoupling of the plastic housing 10 or Connection piece 17.
  • the connector 12 has two, for example opposite and in the flow direction of the cold Fluid flow 14 extending air guide plates 40, the for example up to about the middle of the fluid flow 14 pass.
  • the air guide plates 40 are to the inner wall of the Flow channel 13 curved out, between the air guide plates 40 and the inner wall of the According to FIG. 2, the flow channel 13 has an air gap 42 trains.
  • the two air guide plates 40 are expediently formed on the inner ring piece 36, wherein the curvature of the two air guide plates 40, for example corresponds to the radius of the pitch circle, that of the inner Bend 38 is formed.
  • the air guide plates 40 extend radially, for example, so far that the Inner wall of the flow channel 13 at least to the outlet opening 24 is shielded.
  • the air guide plates 40 can may also be formed by separate parts.
  • the connector 12 is from a first sheet metal part 45 and executed a second sheet metal part 46, the two Sheet metal parts 45, 46 for example by deep drawing are manufactured.
  • the first sheet metal part 45 forms the connection-side pipe section 21 and the second sheet metal part 46 the housing-side tube section 22 including the two air guide plates 40.
  • the two sheet metal parts 45, 46 are in the area of the abutting inner and outer ring piece 36, 37 for example by means of brazing or welding.
  • the inner wall of the connecting piece 17 bears the inner ring piece 36. It is also conceivable the connector 12 from a single sheet metal part to produce a suitable deep-drawing process.
  • the invention is not limited to that described Execution of the connector 12.
  • the connector 12 with the plastic housing 10th to cast around.

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)
  • Valve Housings (AREA)
  • Lift Valve (AREA)
EP98105995A 1997-04-02 1998-04-02 Soupape de mélange, notamment une soupape de recirculation de gaz d' échappement pour un moteur à combustion interne Expired - Lifetime EP0869274B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19713578 1997-04-02
DE19713578A DE19713578C2 (de) 1997-04-02 1997-04-02 Zumischventil, insbesondere Abgasrückführventil einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0869274A1 true EP0869274A1 (fr) 1998-10-07
EP0869274B1 EP0869274B1 (fr) 2002-09-25

Family

ID=7825216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105995A Expired - Lifetime EP0869274B1 (fr) 1997-04-02 1998-04-02 Soupape de mélange, notamment une soupape de recirculation de gaz d' échappement pour un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0869274B1 (fr)
DE (2) DE19713578C2 (fr)
ES (1) ES2184160T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010888A2 (fr) 1998-12-16 2000-06-21 Robert Bosch Gmbh Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement
WO2001079680A1 (fr) * 2000-04-17 2001-10-25 Robert Bosch Gmbh Dispositif de melange et de dosage de flux gazeux dans des moteurs a combustion interne
DE102009018378A1 (de) * 2009-04-18 2010-10-21 Mahle International Gmbh Saugmodul mit integrierter Abgasrückführung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19740459C2 (de) 1997-09-15 2002-07-04 Bosch Gmbh Robert Zumischventil, insbesondere Abgasrückführventil einer Brennkraftmaschine
DE10149673A1 (de) 2001-10-09 2003-04-24 Bosch Gmbh Robert Vorrichtung zur Entlüftung von Komponenten im Ansaugtrakt einer Verbrennungskraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227739A1 (de) 1992-08-21 1994-02-24 Bayerische Motoren Werke Ag Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
DE4325169C1 (de) * 1993-07-27 1994-09-22 Bayerische Motoren Werke Ag Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
DE4424644C1 (de) * 1994-07-13 1995-11-23 Bosch Gmbh Robert Abgasrückführungsventil
EP0753656A1 (fr) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Recirculation de gaz d'échappement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227739A1 (de) 1992-08-21 1994-02-24 Bayerische Motoren Werke Ag Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
DE4325169C1 (de) * 1993-07-27 1994-09-22 Bayerische Motoren Werke Ag Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine
DE4424644C1 (de) * 1994-07-13 1995-11-23 Bosch Gmbh Robert Abgasrückführungsventil
EP0753656A1 (fr) * 1995-07-13 1997-01-15 Aisan Kogyo Kabushiki Kaisha Recirculation de gaz d'échappement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010888A2 (fr) 1998-12-16 2000-06-21 Robert Bosch Gmbh Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement
EP1010888A3 (fr) * 1998-12-16 2000-10-18 Robert Bosch Gmbh Conduit à gaz d'échappement pour soupape de recircualtion de gaz d'échappement
WO2001079680A1 (fr) * 2000-04-17 2001-10-25 Robert Bosch Gmbh Dispositif de melange et de dosage de flux gazeux dans des moteurs a combustion interne
DE102009018378A1 (de) * 2009-04-18 2010-10-21 Mahle International Gmbh Saugmodul mit integrierter Abgasrückführung
EP2243947A1 (fr) * 2009-04-18 2010-10-27 Mahle International GmbH Module d'aspiration doté d'une recirculation de gaz d'échappement intégrée
JP2010249141A (ja) * 2009-04-18 2010-11-04 Mahle Internatl Gmbh 排気ガス再循環装置が組み込まれた吸気モジュール
US8925530B2 (en) 2009-04-18 2015-01-06 Mahle International Gmbh Intake module with integrated exhaust gas recirculation

Also Published As

Publication number Publication date
EP0869274B1 (fr) 2002-09-25
DE59805654D1 (de) 2002-10-31
DE19713578C2 (de) 1999-05-06
ES2184160T3 (es) 2003-04-01
DE19713578A1 (de) 1998-10-15

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