EP2997249A1 - Abgasventilvorrichtung für eine verbrennungskraftmaschine - Google Patents
Abgasventilvorrichtung für eine verbrennungskraftmaschineInfo
- Publication number
- EP2997249A1 EP2997249A1 EP14705118.9A EP14705118A EP2997249A1 EP 2997249 A1 EP2997249 A1 EP 2997249A1 EP 14705118 A EP14705118 A EP 14705118A EP 2997249 A1 EP2997249 A1 EP 2997249A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- actuator
- internal combustion
- valve device
- combustion engine
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 13
- 239000002826 coolant Substances 0.000 claims abstract description 60
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
-
- 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
-
- 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
- F02M26/73—Housings with means for heating or cooling the EGR valve
Definitions
- valve for example from DE 103 44 218 AI o.
- the valve described herein comprises an actuatable via an actuator valve rod with a valve plate, which dominates a flow area. Radially around the valve rod, a coolant channel is formed in the flow housing, which is open to the actuator housing and is closed by placing the actuator housing. The connecting pieces are pressed into corresponding receptacles of the flow housing.
- JP 07-233762 A discloses an exhaust gas recirculation valve which can be actuated via a stepper motor and in which the electric motor is surrounded by a coolant channel in the actuator housing.
- correspondingly shaped holes are screwed or pressed into the coolant supply.
- an exhaust valve device having the features o of the main claim 1.
- the coolant channel extends in the actuator housing and in the valve housing, wherein the coolant inlet nozzle and thedeffenauslassstutzen are arranged on the actuator housing, it is ensured that on the one hand heat from the exhaust gas is already removed before it reaches the actuator and on the other hand, heat directly from the actuator housing can be dissipated. No additional connections are required for this.
- the coolant inlet nozzle and the coolant outlet nozzle are formed integrally with the actuator housing.
- the connecting pieces which are screwed or pressed in known designs and often additionally first must be coated with a sealing material.
- the actuator housing with the coolant inlet nozzle and the coolant outlet nozzle is a plastic injection-molded part. Due to the good thermal shielding and Heat dissipation, the actuator housing can be inexpensively made of plastic.
- the valve housing has a flow housing part, in which the exhaust gas inlet and the exhaust gas outlet are formed, and a gear housing part, in which a gear connected to the actuator is arranged.
- a very accurate adjustment of the exhaust valve is ensured.
- the division of the housing allows a good seal and shielding of different thermal loadable and pollution sensitive components to each other.
- the actuator housing is attached to the gear housing part, so that direct contact of the actuator housing is avoided to the most thermally stressed flow housing.
- the coolant channel advantageously extends from the actuator housing into the gearbox housing part and from the gearbox housing part to the actuator housing.
- the heat is thus dissipated from both the gearbox and the actuator.
- the heat-sensitive actuator housing is thus shielded via the coolant channel in the gear housing and can still dissipate into the actuator housing or dissipate the heat generated there. This leads to a long service life of the actuator, which is reliably protected against overheating.
- the gear housing part and the flow housing part are formed as a one-piece casting.
- the execution in cast iron creates a high thermal load capacity of the valve housing.
- the VentiSgecher has a Flanschff kaue on which the actuator housing is fixed with its flange with the interposition of a seal. This simplifies the assembly and creates a closed inside 5 dense interior, so that the ingress of dirt is prevented from the outside.
- the seal radially surrounds an actuator and gear chamber on the flange surfaces and radially surrounds the coolant channel on one of the flange surfaces.
- the seal can be dispensed with additional seals for the transition of the coolant channel from one housing part to another. This simplifies installation and lowers the cost of manufacturing II.
- This seal is particularly easy to assemble when it is arranged in an axial groove on the flange surface of the actuator housing.
- two pipe pieces are integrally formed with the actuator housing, which extend the coolant passage in the actuator housing and protrude into the coolant passage in the gear housing part.
- the actuator housing can be prefixed before being fastened in its position on the transmission housing, wherein a correct position of the coolant channels in the actuator housing and the transmission housing part is ensured to each other.
- the two pipe sections are each surrounded by a sealing ring, which is arranged in each case in a formed in the coolant passage of the gear housing part radial groove.
- a reliable seal of the coolant channel is produced in a simple manner.
- a designed as an electric motor actuator is particularly preferred, as this ensures a high positioning accuracy.
- an exhaust valve device in which the actuator is significantly better protected from thermal overloading in comparison to known designs and thus an electric actuator can be used even in very high temperature ranges without the risk of overheating.
- the actuator housing can be made of plastic. The installation of such a valve device is particularly simple.
- Figure 1 shows a side view of a first exhaust valve device according to the invention in a perspective view.
- Figure 2 shows a side view of an enlarged section of the exhaust valve device of Figure 1 in a sectional view.
- Figure 3 shows a side view of a second exhaust valve device according to the invention in a sectional view.
- FIG. 4 shows a perspective view of an actuator housing of the exhaust valve device illustrated in FIG.
- the exhaust valve devices according to the invention shown in the figures have an actuator 12 arranged in an actuator housing 10 in the form of an electric motor which drives a transmission 14 which is partially visible in FIG.
- This gear 14 is connected to a valve 15 in operative connection, which a Motion transfer member 16 in the form of a valve rod and a control body 18 in the form of a valve disk.
- the rotational movement of the electric motor 12 is converted via the transmission 14, for example, via an eccentric link connection in a known manner in a translational movement of the valve rod 16.
- valve plate 18 At the opposite end of the valve rod 16 to the gear 14, the valve plate 18 is fixed, which cooperates with a valve seat 20 which surrounds a flow cross-section between an exhaust inlet 22 and an exhaust outlet 24, so that depending on the position of the valve disk 18, a different amount of exhaust gas from the exhaust inlet 22nd can pass over the flow cross-section to the exhaust outlet 24.
- the exhaust gas inlet 22 and the exhaust gas outlet 24 and the valve seat 20 are formed in a portion of a valve housing 28 serving as a flow housing part 26.
- the valve housing 28 which is manufactured in the present embodiment as a one-piece light metal die-cast part, additionally has a gearbox housing part 30 receiving the gearbox 14. From the gear housing part 30, the valve rod 16 projects into the flow housing part 26.
- the gear housing part 30 has a flange surface 32 which abuts against a flange surface 34 of the actuator housing 10 and via which the actuator housing 10 is fastened by means of screws 36 on the gear housing part 30.
- an actuator and gear chamber 38 is correspondingly formed, which is closed to the outside.
- a plug housing part 40 is mounted on the actuator housing 10 in both variants shown, which previously for assembly with the interposition of a plug seal 41st is pushed from the inside into a corresponding opening 43 in the actuator housing 10. This is in the first variant attached to the flow housing part 26 opposite end of the actuator housing 10 and arranged in the second variant according to Figures 3 and 4 laterally to the electric motor 12. Depending on the space for installation of the exhaust valve device, the plug housing part 40 can be correspondingly variably positioned.
- the actuator housing 10 embodied as a plastic injection molded part has two connecting pieces, which are designed as coolant inlet stubs 42 and coolant outlet stubs 44. These are integrally formed with the actuator housing 10 and extending in the direction opposite to the transmission housing part 30 direction of the actuator housing 10 and are arranged in the flow housing 26 facing region disposed on both sides of the actuator 12.
- the coolant inlet pipe 42 and the coolant outlet pipe 44 are fluidly connected to each other via a coolant channel 46, which extends partially in the actuator housing 10 and partially in the gear housing part 30.
- the coolant channel 46 extends initially in extension of thebisstoffeinlassstutzens 42 through the actuator housing 10 in this first channel section 48 again straight extending second channel section 50 in the gear housing part 30.
- a third channel section 52 opens in the actuator housing 10 facing away from the coolant channel 46.
- This third channel section 52 extends substantially along the width of the gear housing part 30 and is designed as a bore which is closed at the insertion end of the drill by a plug 55.
- the third channel section 52 again experiences at its other end a 90 ° deflection, followed by a fourth, hidden channel section, which runs parallel to the second channel section 50, but is formed on the opposite side of the gear housing part 30.
- This fourth channel section in turn leads straight into a fifth channel section 53, which is correspondingly parallel to the first channel section
- a coolant channel 46 running on three sides is formed in the actuator housing 10 and in the gear housing part 30, which surrounds the motion transmission member 16 correspondingly on three sides. This positioning of the coolant channel ensures that the actuator 12 is thermally isolated from the hot flow housing, so that heat can be dissipated via the coolant before it can reach the actuator. At the same time, heat generated by the arrangement of the first and fifth coolant channel sections 48, 53 in the actuator housing 10 can also be dissipated by the electric motor 12.
- the one-piece design of the two coolant connection pieces 42, 44 significantly reduces the otherwise necessary assembly steps, since no additional connection piece installed, so pressed or screwed.
- an annular radial groove 56 is formed, in which a sealing ring 58 is arranged, which surrounds the pipe section 54 radially.
- the course of the coolant channel 46 is substantially the same, but the seal is made differently.
- the pipe sections 54 are omitted here, so that a substantially smooth flange surface 34 is made.
- This has only one axial groove 60, in which a seal 62 is arranged.
- the axial groove 60 and the seal 62 are formed such that, on the one hand, the electric motor 12 with its control board and the pinion driven by the electric motor, which engages in the following gear 14, are radially surrounded by the seal 62 in the region of the flange surface 34 and on the other hand the two facing the gear housing 30 ends of the first and fifth channel portion 48, 53 are surrounded by the seal 62, so that here a seal of the coolant channel 46 and a seal of the gear and actuator chamber 38 is made with only one seal 62.
- the area surrounding the coolant channel ends could also be sealed by a separate seal.
- the screws 36 for connecting the actuator housing 10 with the gear housing part 30 are just like the two coolant channel sections 48, 53 radially outside of the seal 62, so that a leak on the screw is also not to be feared. Accordingly, in both embodiments, an excellent heat dissipation via the coolant channel is ensured both from the actuator housing and from the gear housing part.
- the positioning of the coolant channel additionally produces a thermal shielding of the actuator housing from the flow housing part.
- the installation effort, in particular also for the production of the connection to the coolant circuit is very low in comparison to other embodiments, since the connecting pieces can be manufactured with the actuator housing in one step.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Housings (AREA)
- Mechanically-Actuated Valves (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013102549.8A DE102013102549B4 (de) | 2013-03-13 | 2013-03-13 | Abgasventilvorrichtung für eine Verbrennungskraftmaschine |
PCT/EP2014/052897 WO2014139753A1 (de) | 2013-03-13 | 2014-02-14 | Abgasventilvorrichtung für eine verbrennungskraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2997249A1 true EP2997249A1 (de) | 2016-03-23 |
EP2997249B1 EP2997249B1 (de) | 2020-11-04 |
Family
ID=50115868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14705118.9A Active EP2997249B1 (de) | 2013-03-13 | 2014-02-14 | Abgasventilvorrichtung für eine verbrennungskraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US9638141B2 (de) |
EP (1) | EP2997249B1 (de) |
CN (1) | CN105074189B (de) |
DE (1) | DE102013102549B4 (de) |
WO (1) | WO2014139753A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10385786B2 (en) * | 2014-06-26 | 2019-08-20 | MAGNETI MARELLI S.p.A. | Throttle valve for an internal combustion engine provided with a conditioning circuit |
DE102015206893A1 (de) * | 2015-04-16 | 2016-10-20 | Bayerische Motoren Werke Aktiengesellschaft | Abgasrückführungsmodul mit gekühltem Abgasrückführungsventil |
DE102015206899A1 (de) * | 2015-04-16 | 2016-10-20 | Bayerische Motoren Werke Aktiengesellschaft | Abgasrückführungsventil mit interner Kühlmittelverteilung |
DE102015006100A1 (de) * | 2015-05-09 | 2016-11-10 | Motorenfabrik Hatz Gmbh & Co Kg | Vorrichtung und Verfahren zur Abgasrückführung |
EP3444466B1 (de) * | 2016-04-12 | 2024-05-08 | Hitachi Astemo, Ltd. | Ventilkörper, elektronisch gesteuerte drosselklappe, motorgetriebene drosselklappe und ventilvorrichtung |
DE102016217222B4 (de) * | 2016-09-09 | 2022-08-11 | Vitesco Technologies GmbH | Verfahren und Vorrichtung zur Steuerung der nach einem Gaswechselvorgang im Zylinder einer Brennkraftmaschine verbleibenden Restgasmasse und/oder der während eines Gaswechselvorgangs in den Abgaskrümmer der Brennkraftmaschine gespülten Spülluftmasse |
DE102017110489A1 (de) * | 2017-05-15 | 2018-11-15 | Pierburg Gmbh | Stellvorrichtung für eine Verbrennungskraftmaschine |
DE102017110491B4 (de) * | 2017-05-15 | 2024-09-12 | Ralf Neise | Stellvorrichtung für eine Verbrennungskraftmaschine |
DE102019131798B4 (de) * | 2019-11-25 | 2021-10-07 | Pierburg Gmbh | Abgasrückführvorrichtung für eine Verbrennungskraftmaschine |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07233762A (ja) | 1994-02-23 | 1995-09-05 | Unisia Jecs Corp | 排気還流制御装置 |
JP3204043B2 (ja) | 1995-06-22 | 2001-09-04 | 日産自動車株式会社 | 流量制御バルブ |
JP3420403B2 (ja) | 1995-09-13 | 2003-06-23 | 本田技研工業株式会社 | エンジンのegrバルブ支持構造 |
US6216677B1 (en) * | 1999-09-10 | 2001-04-17 | Eaton Corporation | EGR assembly mounted on exhaust system of a heavy duty diesel engine |
JP2002349360A (ja) * | 2001-05-28 | 2002-12-04 | Mitsubishi Electric Corp | 排気ガス再循環バルブ |
US6789532B2 (en) * | 2001-07-09 | 2004-09-14 | Mitsubishi Denki Kabushiki Kaisha | Mounting device for exhaust gas recirculation valve |
DE10153033B4 (de) | 2001-10-26 | 2018-03-01 | Bayerische Motoren Werke Aktiengesellschaft | Abgas-Rückführ-Wärmetauscher für eine flüssigkeitsgekühlte Brennkraftmaschine |
JP4065239B2 (ja) * | 2002-01-16 | 2008-03-19 | 三菱電機株式会社 | 排気ガス再循環装置 |
EP1509692B1 (de) | 2002-05-15 | 2009-05-13 | Behr GmbH & Co. KG | Schaltbarer abgaswaermetauscher |
DE10344218B4 (de) | 2003-09-22 | 2014-10-23 | Mahle Filtersysteme Gmbh | Abgasrückführungsventil |
JP4285267B2 (ja) | 2004-02-19 | 2009-06-24 | 株式会社デンソー | 排気ガス再循環装置 |
JP2007107389A (ja) * | 2005-10-11 | 2007-04-26 | Mazda Motor Corp | エンジンのegrバルブ装置 |
CN101451622B (zh) * | 2007-11-28 | 2011-02-16 | 财团法人工业技术研究院 | 电动分流阀及具有该电动分流阀的冷却系统 |
BRPI1013738A2 (pt) | 2009-04-20 | 2019-09-24 | Int Eng Ip Co Llc | válvula de recirculação de gás de escapamento e método de resfriamento. |
US8281771B2 (en) * | 2010-02-16 | 2012-10-09 | Kamtec Inc. | Exhaust gas recirculation valve in vehicle |
EP2357350B1 (de) | 2010-02-16 | 2012-10-31 | Kamtec Inc. | Abgasrückführventil in Fahrzeugen |
DE112010005712B4 (de) * | 2010-06-29 | 2015-09-24 | Mitsubishi Electric Corp. | Fluidsteuerventil |
DE102011001461B4 (de) * | 2011-03-22 | 2017-01-26 | Pierburg Gmbh | Abgasrückführmodul für eine Verbrennungskraftmaschine |
-
2013
- 2013-03-13 DE DE102013102549.8A patent/DE102013102549B4/de not_active Expired - Fee Related
-
2014
- 2014-02-14 US US14/774,139 patent/US9638141B2/en active Active
- 2014-02-14 CN CN201480014430.7A patent/CN105074189B/zh active Active
- 2014-02-14 EP EP14705118.9A patent/EP2997249B1/de active Active
- 2014-02-14 WO PCT/EP2014/052897 patent/WO2014139753A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2014139753A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9638141B2 (en) | 2017-05-02 |
DE102013102549B4 (de) | 2022-07-14 |
CN105074189B (zh) | 2018-09-11 |
EP2997249B1 (de) | 2020-11-04 |
DE102013102549A1 (de) | 2014-09-18 |
WO2014139753A1 (de) | 2014-09-18 |
US20160025047A1 (en) | 2016-01-28 |
CN105074189A (zh) | 2015-11-18 |
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