EP0812386B1 - Vorrichtung zur abgasrückführung mit einem im ansaugkanal betätigbaren schliesselement - Google Patents
Vorrichtung zur abgasrückführung mit einem im ansaugkanal betätigbaren schliesselement Download PDFInfo
- Publication number
- EP0812386B1 EP0812386B1 EP96933317A EP96933317A EP0812386B1 EP 0812386 B1 EP0812386 B1 EP 0812386B1 EP 96933317 A EP96933317 A EP 96933317A EP 96933317 A EP96933317 A EP 96933317A EP 0812386 B1 EP0812386 B1 EP 0812386B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- exhaust
- intake duct
- gas feed
- rotary 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
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
-
- 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
- F02M26/52—Systems for actuating EGR valves
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
- F02M26/54—Rotary actuators, e.g. step motors
Definitions
- the invention relates to a device Exhaust gas recirculation with an actuable in the intake duct Closing element according to the preamble of claim 1.
- Newer exhaust gas recirculation valves are operated in a controlled manner.
- the well-known locking plate in Intake duct axially with the help of a pneumatic drive the Moving the opening of the exhaust gas supply duct closed or away.
- the drive-related elasticity Through the drive-related elasticity, the one acting on the valve disk Exhaust gas pressure and the flow conditions in the intake duct result with a stepless adjustment, especially in part-load operation undesirable inaccuracies with small valve gaps.
- the subject of the invention is a device for exhaust gas recirculation at on the one hand the exhaust gas feed channel, as well as the adjustment drive in the intake duct is arranged and on the other hand, the valve parts are formed in this way are that minimal of the exhaust gas and fresh gas flow caused forces on the closing element and its drive Act. To this end, it projects approximately perpendicular to the intake duct Fresh gas flow an essentially cylindrical exhaust gas supply pipe as part of an exhaust gas inlet connection, which in has an outlet opening in its cylindrical wall. about the outlet opening is a rotary valve bell as a closing element arranged, which protrudes into the intake duct Exhaust gas supply pipe includes at least in some areas. The rotary valve bell is with an electric swivel motor serving as an adjustment drive coupled.
- the electric swivel motor is, for example, a so-called electromagnetic one Turntable.
- the coil winding of this swivel motor is subjected to a pulsating direct current.
- the resulting torque of the rotor acts against one Return spring.
- the Coil winding together with an iron yoke and a stator The permanent magnet together with the swivel shaft form the rotor.
- the pivoting movement of the closing element can also be done with Can be realized with the help of a stepper motor.
- the closing element or the rotary valve bell is aligned opposite the exhaust gas supply pipe and the exhaust gas supply pipe.
- the center lines of the exhaust gas supply nozzle and the Rotary vane bell can also be slightly offset in parallel be arranged.
- An offset that has a small gap in the area the outlet and a large gap on the opposite Generated side of the exhaust gas supply pipe, causes good valve tightness without the risk of the rotary valve bell jammed by dirt in the gap.
- the exhaust gas recirculation device has a closing element, due to its design only a small amount to operate Force is needed.
- the bell shape the locking element on the one hand a high security against one vibration excitation from the exhaust system and the other it is shake-proof due to a balanced mass distribution with respect to their swivel axis.
- Furthermore enables the direct drive has a highly dynamic and precise adjustment behavior.
- Figure 1 shows an exhaust gas recirculation valve in an intake duct (10) an internal combustion engine is arranged.
- the intake duct (10) is behind in the direction of the fresh gas flow the exhaust gas is introduced into a throttle valve (1).
- This is at the Outside wall of the intake duct (10), an exhaust gas supply nozzle (11) arranged on which an exhaust gas feed line, not shown here is flanged.
- an exhaust gas supply nozzle (11) arranged on which an exhaust gas feed line, not shown here is flanged.
- the Exhaust gas supply pipe (12) which is also connected to the exhaust gas supply nozzle (11) molded tubular portion a cylindrical outer contour and is with a bottom (13) locked.
- Part of the exhaust gas supply pipe (12) has a round outlet opening (15).
- the imaginary center line of the outlet opening (15) runs, for example, parallel to the center line of the intake duct (10).
- Part of the exhaust gas supply pipe (12) is a pivotable one Rotary vane bell (20) positioned.
- the pivot axis of the Rotary vane bell (20) corresponds to the center line of the exhaust gas feed pipe (12).
- the rotary valve bell (20) is a thin-walled in Figure 1 Master cylinder with bottom. On the outside of the bottom is a smaller diameter cylinder concentric with the master cylinder arranged.
- the master cylinder has one as a rotary valve opening serving bore (21), with the exhaust gas recirculation valve open with the outlet opening (15) for example is congruent. Since the exhaust gas recirculation valve in FIG is shown closed position, the rotary valve opening (21) on the back of the exhaust gas supply pipe (12) and is therefore only drawn in dashed lines.
- the outlet opening (15) of the exhaust gas supply pipe (12) and the rotary slide valve opening (21) can have different sizes and surfaces have different contours.
- the cross sections of the openings (15) and (21) can be coordinated with one another, if necessary, that each pivot angle of the rotary valve bell (20) corresponds to a certain opening cross section, so that e.g. With increasing pivoting angle the opening cross section increases.
- the rotary vane bell (20) can also have several Have openings in the area of the master cylinder. To this For example, different opening cross sections per Realize swivel angle.
- the bottom of the rotary valve bell (20) can have several recesses or have holes to exhaust gas that is in the gap between the exhaust gas supply pipe (12) and the rotary valve bell (20) pending to let escape.
- No recesses can affect the rotary valve bell (20) train acting axial force. It also penetrates the edge of the Exhaust gas escaping from the floor is not in the adjustment drive (30) on.
- a Electric swivel motor (30) used to store and adjust the rotary valve bell (20. It is in a drive housing (31) housed in the form of a tube from the Intake channel (10) protrudes.
- the drive housing (31) is like this aligned that its center line with the center line of the Hole for receiving the exhaust gas supply pipe (11) matches and at the same time with the center line of the intake duct (10) cuts vertically. Furthermore, the outside facing end face of the drive housing (31) normal to the housing center line aligned.
- a rotary slide flange (32) is mounted on which is followed by a rotary valve axis (35).
- the free The end of the rotary valve axis (35) engages in one in the floor (13) of the exhaust gas supply pipe (12) existing bearing bore (16).
- the rotary valve bell (20) sits with the help of the bearing cylinder on a hollow shaft (36) on the rotary valve axis (35) is double-bearing. That near the rotary valve flange (32) arranged roller bearing (37) is a fixed bearing. If necessary, the drive housing (31) with slight Overpressure to be applied to the rolling bearing before possibly penetrating To protect exhaust gas particles. In addition, before free end of the hollow shaft (36) between the rotary valve bell (20) and the rotary valve axis (35) or the bottom (13) for example, a gap seal can be provided before free end of the hollow shaft (36) between the rotary valve bell (20) and the rotary valve axis (35) or the bottom (13) for example.
- Coil (41) One sits on the rear part of the hollow shaft (36) Coil (41). Among other things these two components form the rotor of the Electric swivel motor (30). Around the coil (41) is a magnetic stator (42) arranged. It is in one in the rotary valve flange (32) existing annular groove (33) attached.
- the electric swivel motor (30) has one, not shown Stops, limited swivel range of approx. 90 °.
- the Closing the exhaust gas recirculation valve causes a spiral spring (44) between the rotary valve flange (32) and the rear end of the hollow shaft (36).
- the coil spring (44) is on the hollow shaft (36) and on the rotary valve flange (32) attached.
- a thin-walled, pot-shaped lid (49) is arranged between the drive housing (31) and the stator (42) between the drive housing (31) and the stator (42) a thin-walled, pot-shaped lid (49) is arranged.
- the Cover (49) is on the outer edge of the rotary valve flange (32) attached ring groove (33) clamped.
- Internally Wall area of the intake duct (10) is for sealing the transition point between the cover (49) and the drive housing (31) an O-ring is jammed. Between the hollow shaft (36) and the cover (49) there is a gap seal.
- the electric swivel motor (30) with a equip own housing so that it together with the rotary valve axis (35) and the rotary valve bell (20) a mounting assembly forms.
- the assembly module can then be attached directly the intake duct (10) are flanged without this one molded drive housing (31) as shown in FIG. 1 needed.
- the intake duct (10) has a corresponding breakthrough.
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)
- Characterised By The Charging Evacuation (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Description
Claims (3)
- Vorrichtung zur Abgasrückführung mit einem an einen Ansaugkanal angeschlossenen Abgaszuführkanal, wobei der Abgaszuführkanal im Ansaugkanal über ein von einem Verstellantrieb betätigten Schließelement öffen- und verschließbar ist, wobeiin den Ansaugkanal (10) annähernd senkrecht zur Frischgasströmung ein im wesentlichen zylindrisches Abgaszuführrohr (12) als Teil eines Abgaszuführstutzen (11) hineinragt, dadurch gekennzeichnet,daß das Abgaszuführrohr (12) in seiner zylindrischen Wandung eine Auslaßöffnung (15) aufweist,daß das Schließelement eine Drehschieberglocke (20) ist, die das in den Ansaugkanal (10) hereinragende Abgaszuführrohr (12) zumindest bereichsweise umfaßt unddaß die Drehschieberglocke (20) mit einem als Verstellantrieb dienenden Elektroschwenkmotor (30) gekuppelt ist.
- Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Auslaßöffnung (15) bezüglich der Strömungsrichtung des Frischgasstromes annähernd quer und hinter dem Abgaszuführrohr (12) angeordnet ist.
- Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die gedachten Mittellinien des Abgaszuführstutzens (11) und der Drehschieberglocke (20) identisch sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19549107A DE19549107A1 (de) | 1995-12-29 | 1995-12-29 | Vorrichtung zur Abgasrückführung mit einem im Ansaugkanal betätigbaren Schließelement |
DE19549107 | 1995-12-29 | ||
PCT/DE1996/001563 WO1997024522A1 (de) | 1995-12-29 | 1996-08-23 | Vorrichtung zur abgasrückführung mit einem im ansaugkanal betätigbaren schliesselement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0812386A1 EP0812386A1 (de) | 1997-12-17 |
EP0812386B1 true EP0812386B1 (de) | 2000-01-05 |
Family
ID=7781623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96933317A Expired - Lifetime EP0812386B1 (de) | 1995-12-29 | 1996-08-23 | Vorrichtung zur abgasrückführung mit einem im ansaugkanal betätigbaren schliesselement |
Country Status (6)
Country | Link |
---|---|
US (1) | US5785034A (de) |
EP (1) | EP0812386B1 (de) |
JP (1) | JPH11504411A (de) |
KR (1) | KR19980702578A (de) |
DE (2) | DE19549107A1 (de) |
WO (1) | WO1997024522A1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19607811A1 (de) * | 1996-03-01 | 1997-09-04 | Bosch Gmbh Robert | Abgasrückführventil |
JP3809696B2 (ja) * | 1997-03-25 | 2006-08-16 | 株式会社豊田自動織機 | 内燃機関の排気ガス再循環装置 |
DE19725668C1 (de) * | 1997-06-18 | 1998-10-29 | Daimler Benz Ag | Abgasrückführeinrichtung |
US6073617A (en) * | 1997-07-08 | 2000-06-13 | Siemens Canada Ltd. | Manifold-mounted emission control valve |
US6223733B1 (en) * | 1997-07-08 | 2001-05-01 | Siemens Canada Limited | Exhaust gas recirculation valve |
DE10053675B4 (de) * | 2000-10-28 | 2011-04-28 | Volkswagen Ag | Brennkraftmaschine mit geregelter Abgasrückführung |
DE10125094A1 (de) | 2001-05-23 | 2002-11-28 | Siemens Ag | Abgasrückführeinrichtung |
US6928994B2 (en) * | 2001-11-08 | 2005-08-16 | Siemens Vdo Automotive, Inc. | Modular exhaust gas recirculation assembly |
US6935320B2 (en) | 2001-11-08 | 2005-08-30 | Siemens Vdo Automotive Inc. | Apparatus and method for exhaust gas flow management of an exhaust gas recirculation system |
US7107970B2 (en) * | 2002-12-18 | 2006-09-19 | Siemens Vdo Automotive Inc. | Fuel vapor purge control assembly and methods of assembling and controlling same |
US6776146B1 (en) * | 2003-01-27 | 2004-08-17 | International Engine Intellectual Property Company, Llc | Obstruction of flow to improve flow mix |
US6907868B2 (en) * | 2003-03-14 | 2005-06-21 | Siemens Vdo Automotive, Inc. | Modular exhaust gas recirculation assembly |
US6848432B2 (en) * | 2003-06-20 | 2005-02-01 | Siemens Vdo Automotive, Inc. | Purge control device for low vacuum condition |
KR100565617B1 (ko) * | 2003-09-18 | 2006-03-29 | 엘지전자 주식회사 | 냉장고의 제빙장치 |
JP4192763B2 (ja) * | 2003-11-07 | 2008-12-10 | 株式会社日立製作所 | 電子式egrガス制御装置 |
EP1701029A1 (de) * | 2003-11-28 | 2006-09-13 | Hitachi, Ltd. | Agr-steuervorrichtung und motorbetriebene drosselventilvorrichtung für dieselmotor |
PT1544449E (pt) * | 2003-12-19 | 2007-04-30 | Cooper Standard Automotive D | Válvula de recirculação de gases de escape |
US6959700B2 (en) * | 2004-03-18 | 2005-11-01 | International Engine Intellectual Property Company, Llc | Flow deflector for a pipe |
US7204240B2 (en) * | 2004-06-12 | 2007-04-17 | Borgwarner Inc. | Integrated valve |
EP1609976A1 (de) * | 2004-06-25 | 2005-12-28 | Cooper-Standard Automotive (Deutschland) GmbH | Ventil im Bereich eines Verbrennungsmotors |
DE102004047180B4 (de) * | 2004-09-29 | 2014-07-17 | Robert Bosch Gmbh | Aufladeeinrichtung mit Laststeuerung an Verbrennungskraftmaschinen |
US7607638B2 (en) | 2005-03-08 | 2009-10-27 | Borgwarner Inc. | EGR valve having rest position |
DE102005020484A1 (de) * | 2005-04-29 | 2006-11-02 | Mahle International Gmbh | Abgasrückführeinrichtung |
US20080110435A1 (en) * | 2006-11-13 | 2008-05-15 | Oswald Baasch | Air valve and method of use |
DE102008015223B4 (de) * | 2008-03-20 | 2010-03-25 | Boa Balg- Und Kompensatoren-Technologie Gmbh | Vorrichtung zur Abgasrückführung und Verfahren zu deren Herstellung |
ITUA20164688A1 (it) * | 2016-06-27 | 2017-12-27 | Magneti Marelli Spa | Dispositivo attuatore di valvola di ricircolo dei gas di scarico (egr) in un motore endotermico e relativo gruppo valvola di ricircolo dei gas di scarico |
FR3077101B1 (fr) * | 2018-01-19 | 2020-01-31 | Renault S.A.S | Dispositif d'admission d'air pour moteur a combustion interne |
CN111561409B (zh) * | 2020-07-14 | 2020-11-20 | 潍柴动力股份有限公司 | Egr管及发动机 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1388032A (en) * | 1972-03-30 | 1975-03-19 | Chrysler Uk | Internal combustion engine exhaust gas recirculation |
FR2238055A1 (en) * | 1973-07-18 | 1975-02-14 | Willaume Rolland | I.C. engine pollution reduction system - injects variable proportion of exhaust gas into fresh air intake |
US4300515A (en) * | 1978-12-20 | 1981-11-17 | Robert Bosch Gmbh | Apparatus for actuating an adjustment device acting upon a control apparatus for exhaust recirculation in internal combustion engines |
DE2940061A1 (de) * | 1979-10-03 | 1981-04-16 | Robert Bosch Gmbh, 7000 Stuttgart | Einrichtung zur steuerung der zusammensetzung des betriebsgemisches bei brennkraftmaschinen |
US4671246A (en) * | 1985-07-23 | 1987-06-09 | Robert Bosch Gmbh | Apparatus for controlling recirculated quantities of exhaust gas in internal combustion engines |
DE3609611C2 (de) * | 1985-08-29 | 1994-01-27 | Bosch Gmbh Robert | Abgasrückführregelvorrichtung für eine Brennkraftmaschine |
DE3822954C2 (de) * | 1988-07-07 | 1997-02-27 | Pierburg Ag | Abgasrückführeinrichtung |
JP2548036Y2 (ja) * | 1991-01-25 | 1997-09-17 | アイシン精機株式会社 | 排気ガス還流装置 |
US5163295A (en) * | 1991-09-09 | 1992-11-17 | Eaton Corporation | Controlling exhaust gas recirculation in a pressure boosted internal combustion engine |
DE4227739C2 (de) * | 1992-08-21 | 1998-04-30 | Bayerische Motoren Werke Ag | Zumischventil, insbesondere Abgasrückführ-Ventil einer Brennkraftmaschine |
US5333456A (en) * | 1992-10-01 | 1994-08-02 | Carter Automotive Company, Inc. | Engine exhaust gas recirculation control mechanism |
US5492104A (en) * | 1994-11-03 | 1996-02-20 | General Motors Corporation | Exhaust gas recirculation for an internal combustion engine |
DE4441091A1 (de) * | 1994-11-18 | 1996-05-23 | Bosch Gmbh Robert | Abgasrückführventil |
US5606957A (en) * | 1995-12-06 | 1997-03-04 | Caterpillar Inc. | Control system for exhaust gas recirculation |
US5669364A (en) * | 1996-11-21 | 1997-09-23 | Siemens Electric Limited | Exhaust gas recirculation valve installation for a molded intake manifold |
-
1995
- 1995-12-29 DE DE19549107A patent/DE19549107A1/de not_active Withdrawn
-
1996
- 1996-08-23 US US08/894,834 patent/US5785034A/en not_active Expired - Fee Related
- 1996-08-23 DE DE59604117T patent/DE59604117D1/de not_active Expired - Fee Related
- 1996-08-23 WO PCT/DE1996/001563 patent/WO1997024522A1/de active IP Right Grant
- 1996-08-23 KR KR1019970705984A patent/KR19980702578A/ko active IP Right Grant
- 1996-08-23 JP JP9523951A patent/JPH11504411A/ja active Pending
- 1996-08-23 EP EP96933317A patent/EP0812386B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1997024522A1 (de) | 1997-07-10 |
US5785034A (en) | 1998-07-28 |
DE59604117D1 (de) | 2000-02-10 |
DE19549107A1 (de) | 1997-07-03 |
EP0812386A1 (de) | 1997-12-17 |
KR19980702578A (ko) | 1998-07-15 |
JPH11504411A (ja) | 1999-04-20 |
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