EP3615787A1 - Regelvorrichtung für eine verbrennungskraftmaschine - Google Patents
Regelvorrichtung für eine verbrennungskraftmaschineInfo
- Publication number
- EP3615787A1 EP3615787A1 EP18718435.3A EP18718435A EP3615787A1 EP 3615787 A1 EP3615787 A1 EP 3615787A1 EP 18718435 A EP18718435 A EP 18718435A EP 3615787 A1 EP3615787 A1 EP 3615787A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- internal combustion
- combustion engine
- gas recirculation
- engine according
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/102—Details of the flap the flap having movable parts fixed onto it
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/1025—Details of the flap the rotation axis of the flap being off-set from the flap center axis
- F02D9/103—Details of the flap the rotation axis of the flap being off-set from the flap center axis the rotation axis being located at an edge
-
- 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
- F02M26/64—Systems for actuating EGR valves the EGR valve being operated together with an intake air throttle
-
- 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/0276—Throttle and EGR-valve operated together
Definitions
- the invention relates to a control device for an internal combustion engine having an intake passage with an inlet and an outlet, an exhaust gas recirculation passage, which opens into the intake passage, a control body, an orifice of the exhaust gas recirculation passage, which serves as a valve seat for the control body in the exhaust gas recirculation passage closing state, and a Serving as the axis of rotation of the control body shaft to which the control body is mounted eccentrically, wherein the control body by rotation of the shaft between a first end position in which the control body at least throttles the intake passage and a second end position in which the control body on the valve seat at the mouth the exhaust gas recirculation channel rests, is movable.
- Control devices are used in internal combustion engines to regulate exhaust or air quantities that are to be removed or supplied to combustion. Combinations of these control valves, in which either a valve body dominating both an exhaust gas recirculation channel and an intake channel or two coupled valve bodies are actuated via a common adjusting device, are known. Accordingly, these valve bodies serve as a combination of an exhaust gas recirculation valve with a throttle valve.
- the exhaust gas recirculation channel which is usually arranged in the low-pressure region, opens into the air intake duct immediately downstream of the flap serving as a throttle valve.
- the exhaust gas recirculation channels advantageously open outside the flow cross-section of the air intake duct, so that both the control body and its drive shaft can be rotated out of the flow cross-section.
- the control body consists of two mutually connected via a holding axis flap bodies, one of which throttles the intake passage and the other is placed on the valve seat of the exhaust gas recirculation passage.
- a similar control device is known from EP 3 012 445 A1, in which a valve body arranged parallel thereto is fastened to a flap body via a holding axis, so that both bodies are actuated together via an eccentrically arranged rotary shaft, so that with rotation of the two flaps the valve body removed from the valve seat of the air intake passage while the valve body approaches the valve seat of the exhaust gas recirculation passage until the air intake passage is fully opened and the exhaust gas recirculation passage is completely closed.
- the valve seats are each designed as circumferential stops, against which the bodies rest circumferentially in their position closing the respective channel.
- the rotary shaft is disposed on a housing wall between the mouth of the exhaust gas recirculation passage and the valve seat in the air intake passage, but disposed outside the flow area of the upstream passage portion of the intake passage.
- a flow housing of the exhaust gas recirculation passage is inserted into an opening of a mixing housing in which the control body is movable.
- the valve seat or the mouth of the exhaust gas recirculation channel can be mechanically processed according to easy accessibility prior to insertion to a smooth Surface to be generated, which also lateral forces are avoided by irregularities in the surface.
- control body on a valve body, via which the intake passage is at least throttled and a valve body, which is lowered onto the valve seat of the exhaust gas recirculation passage.
- valve body is attached to the valve body via a holding axis, so that the two closure bodies can be formed spaced apart from one another, whereby an inclination of the two closure bodies to each other can be produced.
- valve seat of the exhaust gas recirculation passage is formed inclined relative to the center axis of the intake passage toward the outlet of the intake passage. Due to such a tendency, condensate formed when the engine stops can be guided to a desired position on the valve seat which is outside the area through which the condensate can flow back into the exhaust gas recirculation channel when the engine is restarted and can be vaporized again there.
- the holding axis in such a circular arc shape that the holding axis rests perpendicular to the valve body and the valve body.
- the holding axis despite a tilted to the intake valve seat of the exhaust gas recirculation passage of the flap body and the valve body can be easily attached to a support surface via a straight bearing surface and the Valve body are centrally connected to the support axis, whereby the attachment of the support shaft to the closure bodies simplifies and the durability of the attachment can be improved.
- the holding axis is formed straight and extends perpendicularly from the valve body to the valve body. Accordingly, the holding axis is positioned obliquely to the valve body, which makes the attachment of the holding axis difficult, but significantly simplifies the production of the holding axis.
- the holding axis is arranged centrally on the valve body.
- the attachment of the relatively small valve body thus remains simple and the holding axis can be made relatively wide in order to ensure a high durability of the control body, without having to be arranged at closure of the exhaust gas recirculation passage in the region of the valve seat.
- the shaft is mounted in the intake passage upstream of the mouth of the exhaust gas recirculation passage in the mixing housing, so that in fact acts only the valve body in the throttling of the intake passage, while the valve body is in its slipstream.
- the exhaust gas recirculation channel opens into the intake channel at a lowest point of a trough-shaped depression of the mixing housing.
- this depression corresponding to the precipitating when stopping the internal combustion engine condensate and accumulates in this lying outside the flow cross-section of the intake channel recess. It can be removed either at standstill in the exhaust gas recirculation channel or, if it is not discharged, are only evaporated in the mixing housing by the rising temperature during operation, before it would be entrained by the air flow.
- the first upstream channel portion is limited by a flap seat against which the flap body of the control body in the first end position abuts circumferentially in a position completely closing the intake passage. This allows complete closure of the intake duct.
- the flap seat is advantageously formed by an axial end of a first housing part of the intake channel, which forms the upstream channel portion and projects into a second housing part of the mixing housing. Also, this flap seat can be correspondingly easily machined with easy accessibility before attachment to the mixing housing to produce smooth contact surfaces.
- the axis of rotation of the shaft is also arranged in a plane spanned by the flap seat, so that the flap body performs a purely axial movement on the flap seat when placed on the flap seat, which avoids shear forces when placing and thus reduces wear ,
- a control device with which by a purely perpendicular to the plane spanned by the valve seat movement of the control body on the valve seat damage to the control body and the valve seat due to transverse forces are reliably avoided, whereby the wear in this area significantly reduced and thus the Tightness in closing the channels over a long period of time is maintained and the durability of the control device is extended.
- small sizes can be achieved and the assembly and manufacture of the sensitive valve seats in particular are facilitated.
- FIG. 1 shows a side view of a first embodiment of a control device according to the invention in a sectional view.
- FIG. 2 shows a side view of a second embodiment of a control device according to the invention in a sectional view.
- the control device consists of a mixing housing 10, which has an intake passage 12 with an inlet 14 through which air flows and into which an exhaust gas recirculation passage 16 opens, through the mouth 18 exhaust gas can flow into the mixing housing.
- the intake passage 12 extends substantially in a straight line, while the exhaust gas recirculation passage 16 opens in the lower region of the mixing housing 10, which is lower relative to the earth's surface, perpendicular to the intake passage 12.
- the mixing housing 10 has an outlet 20, flows from the air or an exhaust gas-air mixture to a compressor, not shown.
- the mixing housing 10 consists of a first, substantially tubular housing part 22, which forms a first upstream channel portion 24 of the intake passage 12 and the downstream end is obliquely formed and forms an angle a of about 75 ° to a central axis 26 of the housing part 22.
- the downstream end of the first housing part 22 is disposed in the interior of a second housing part 28, or is inserted into the second housing part 28 until a flange 30, via which the first housing part 22 by means of screws 32 on the second Housing part 28 is attached.
- the second housing part 28 forms a second channel portion 34 of the intake passage 12, in which an opening 36 is formed, which is arranged in the flow direction at a short distance behind the oblique end of the first housing part 22 and which serves as a receptacle for a flow housing 38 which the mouth 18 of the exhaust gas recirculation passage 16 forms, the central axis 40 is arranged perpendicular to the central axis 26 of the intake passage 12.
- a shaft 42 is rotatably mounted, which can be actuated via a non-visible actuator.
- the shaft 42 forms an eccentric axis of rotation 44 for a control body 46, is perpendicular to the central axes 26, 40 and is disposed between the mouth 18 of the exhaust gas recirculation passage 16 and the axial end of the first housing part 22 and immediately downstream of the first housing part 22.
- the overall cross-section of the first housing part 22 is smaller than that of the second housing part 28, wherein the first housing part 22 is secured to the second housing part 28, that formed in the region of the mouth 18 of the exhaust gas recirculation passage 16 trough-shaped recess 48 on the second housing part 28 outside of the flow cross-section of Intake passage 12 is arranged, in which the shaft 42, the second housing part 28 is arranged penetrating.
- This trough-shaped recess 48 is also formed with respect to the connecting piece of the subsequent compressor, so that condensate, which arises after switching off the engine can collect in this recess 48 and optionally in the exhaust gas recirculation passage 16 can flow back.
- this condensate is located on the restart outside the flow-through zone, so that no condensate drops are entrained and flow to the compressor. Instead, this condensate can evaporate during operation by the heat of exhaust gas and be passed over the compressor in the harmless state.
- On the shaft 42 of the control body 46 is fixed, which is rotatably disposed within the second channel portion 34 and consists of a valve body 50 and a valve body 52, which are interconnected by a support shaft 54.
- the flap body 50 is attached directly or via a holding member to the shaft 42 and has as well as the valve body 52 has a receiving opening through which the support shaft 54 respectively penetrates, so that the valve body 52 is fixed to the flap body 50 via the support shaft 54 and with the Damper body 50 is pivoted upon rotation of the shaft 42.
- the flap body 50 rests against the end of the first housing part 18 acting as a flap seat 56, while the valve body 52 releases the exhaust gas return channel 16.
- the intake passage 12 releases, the exhaust gas recirculation passage 16 closed by the valve body 52 and vice versa.
- the valve body 52 Upon reaching a second end position, finally, the valve body 52 is located on the axial end of the mouth 18 of the exhaust gas recirculation passage, which serves as a valve seat 58.
- a plane 60 is spanned by the valve seat 58, in which the axis of rotation 44 of the shaft 42 is arranged.
- valve seat 58 is designed to be inclined towards the outlet 20 of the intake duct 12.
- the support shaft 54 has to Damper body 50 also correspondingly has an inclination while being oriented perpendicular to valve body 52.
- the exemplary embodiment according to FIG. 2 corresponds to that of FIG. 1, except that the holding axis 54 ⁇ has a circular arc shape, so that the holding axis 54 ⁇ is also aligned perpendicular to the flap body 50 at the contact point.
- control device described in this way significantly reduces the wear occurring in the region of the valve seat and the valve body, since lateral forces, which lead to friction, are avoided. This leads to a high tightness of the closure of the exhaust gas recirculation channel over a much longer period.
- the flap seat according to the shaft, so that the rotation axis is additionally arranged in the plane defined by the flap seat level, if in this area increased wear should occur, leading to leaks in the long term.
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)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017109062.2A DE102017109062A1 (de) | 2017-04-27 | 2017-04-27 | Regelvorrichtung für eine Verbrennungskraftmaschine |
| PCT/EP2018/059749 WO2018197262A1 (de) | 2017-04-27 | 2018-04-17 | Regelvorrichtung für eine verbrennungskraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3615787A1 true EP3615787A1 (de) | 2020-03-04 |
| EP3615787B1 EP3615787B1 (de) | 2023-07-12 |
Family
ID=62002650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18718435.3A Active EP3615787B1 (de) | 2017-04-27 | 2018-04-17 | Regelvorrichtung für eine verbrennungskraftmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10871111B2 (de) |
| EP (1) | EP3615787B1 (de) |
| CN (1) | CN110546372B (de) |
| DE (1) | DE102017109062A1 (de) |
| WO (1) | WO2018197262A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017109066A1 (de) * | 2017-04-27 | 2018-10-31 | Ford-Werke Gmbh | Regelvorrichtung für eine Verbrennungskraftmaschine |
| AT521954B1 (de) * | 2019-01-31 | 2020-07-15 | MAN TRUCK & BUS OESTERREICH GesmbH | Vorrichtung zur Abgasführung für eine Brennkraftmaschine |
| US20220381205A1 (en) * | 2021-05-25 | 2022-12-01 | Faurecia Emissions Control Technologies, Usa, Llc | Valve assembly for vehicle exhaust system |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3741179A (en) * | 1971-07-01 | 1973-06-26 | Ford Motor Co | Exhaust gas recirculating system control |
| JPS5654947A (en) * | 1979-10-09 | 1981-05-15 | Toyota Motor Corp | Intake and egr controller for diesel engine |
| US6848432B2 (en) * | 2003-06-20 | 2005-02-01 | Siemens Vdo Automotive, Inc. | Purge control device for low vacuum condition |
| CN101415933B (zh) * | 2006-03-22 | 2012-06-20 | 博格华纳公司 | 一体式的充气和排气再循环阀 |
| IT1396027B1 (it) | 2009-10-19 | 2012-11-09 | Dellorto Spa | Valvola egr per applicazioni di tipo low pressure, nella tecnica del ricircolo controllato di gas combusti in motori a combustione interna. |
| PT2592258E (pt) * | 2011-11-08 | 2014-07-15 | Cooper Standard Automotive D | Válvula de recirculação de gás de escape |
| DE102012101851B4 (de) * | 2012-03-06 | 2014-06-05 | Pierburg Gmbh | Abgaseinleitvorrichtung für eine Verbrennungskraftmaschine |
| CN203240024U (zh) * | 2013-05-09 | 2013-10-16 | 浙江精嘉阀门有限公司 | 高压双重密封止回阀 |
| CN103671955B (zh) * | 2014-01-07 | 2016-01-20 | 天津贝特尔流体控制阀门有限公司 | 天然气旋启式轴流安全切断阀 |
| DE102014200699A1 (de) * | 2014-01-16 | 2015-07-16 | Ford Global Technologies, Llc | Niederdruck-EGR-Ventil |
| DE102014114968B4 (de) * | 2014-10-15 | 2021-01-21 | Pierburg Gmbh | Regelvorrichtung für eine Verbrennungskraftmaschine |
| DE102015119432B3 (de) | 2015-11-11 | 2017-02-02 | Ford-Werke Gmbh | Einlasssystem für eine Verbrennungskraftmaschine |
| GB2544731B (en) * | 2015-11-19 | 2019-02-20 | Ford Global Tech Llc | An exhaust gas recirculation apparatus |
| DE102015121617B4 (de) * | 2015-12-11 | 2021-01-28 | Ford-Werke Gmbh | Regelvorrichtung für eine Verbrennungskraftmaschine |
| DE102016108389B4 (de) * | 2016-05-06 | 2018-03-15 | Pierburg Gmbh | Regelvorrichtung |
| US20180058340A1 (en) * | 2016-08-24 | 2018-03-01 | Ford Global Technologies, Llc | Supercharged internal combustion engine with compressor, exhaust-gas recirculation arrangement and flap |
| DE102017109066A1 (de) * | 2017-04-27 | 2018-10-31 | Ford-Werke Gmbh | Regelvorrichtung für eine Verbrennungskraftmaschine |
| DE102017208070B4 (de) * | 2017-05-12 | 2020-06-25 | Ford Global Technologies, Llc | Aufgeladene Brennkraftmaschine mit Niederdruck-Abgasrückführung und verschwenkbarer Klappe |
-
2017
- 2017-04-27 DE DE102017109062.2A patent/DE102017109062A1/de not_active Withdrawn
-
2018
- 2018-04-17 WO PCT/EP2018/059749 patent/WO2018197262A1/de not_active Ceased
- 2018-04-17 US US16/607,364 patent/US10871111B2/en active Active
- 2018-04-17 EP EP18718435.3A patent/EP3615787B1/de active Active
- 2018-04-17 CN CN201880026568.7A patent/CN110546372B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20200131998A1 (en) | 2020-04-30 |
| US10871111B2 (en) | 2020-12-22 |
| CN110546372A (zh) | 2019-12-06 |
| DE102017109062A1 (de) | 2018-10-31 |
| WO2018197262A1 (de) | 2018-11-01 |
| CN110546372B (zh) | 2022-11-01 |
| EP3615787B1 (de) | 2023-07-12 |
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